39results about How to "Avoid Shock Phenomena" patented technology

The invention provides balanced valve which comprises a main valve body (1) and a main valve core (4), wherein the main valve body (1) is provided with a positive oil outlet (A) and a reverse oil outlet (B); the main valve core (4) comprises a first acting surface (A1) and a second acting surface (A2) which are opposite to each other; the first acting surface is exposed in a first acting cavity (3) communicated with the reverse oil outlet; the second acting surface is exposed in a second acting cavity (17) communicated with the reverse oil outlet through a dumping groove (5); and the balanced valve further comprises a guiding control module which enables the second acting cavity to be selectively communicated with an oil draining port through a guiding control oil port (X). In addition, the invention also provides a hydraulic cylinder expansion control loop and a hydraulic crane. Due to the guiding control method, a large control ratio can be obtained through controlling the size of a guiding piston rod, the descending speed limitation control of the balanced valve is more sensitive, the influence of the load pressure on the openness of the main valve core is slight, frequent shaking can not be generated, the work stability is good, and the energy-saving effect is excellent.

The invention relates to a chambering and detaching tool for a pin roll with a countersink at one end. When the pin roll is chambered, a chambering pin is mounted in a screw, a pin roll is clamped between a blanket and the chambering pin, and the countersink of the pin roll is chambered through the chambering pin through a spiral movement of the screw. When the pin roll is detached, the blanket, a washer, a screw and the chambering pin are detached, an ejector pin is mounted in the screw, and the ejector pin ejects the pin roll out of a mounting part through the spiral movement of the screw. Compared with other accomplishing means, the hole expanding and detaching processes are accomplished by one person; the hole expanding hole is steady, and the product is not impacted; the hole expanding extent is controllable, and the orifice is free of a cracking phenomenon; with adoption of a replaceable pressure head, the application range of the tool is expanded, and the tool is simple and feasible, and the labor cost is saved and the production efficiency is improved.

The invention discloses an electrically modulated proportional throttle control valve comprising a main valve, a pilot control assembly and an electromagnet, but the connection form of the valve is a threaded type, so that the whole structure is simple, the size is small, the weight is light, the positive effects of compactness, high-efficiency and energy-saving of a hydraulic system are achieved conveniently, and meanwhile, the manufacturing cost is also greatly reduced, so that the valve is more likely to be accepted by the market.

The invention discloses a locking oil cylinder structure with a stroke tail end buffered. The locking oil cylinder structure comprises an oil cylinder seat, a buffer valve sleeve, a buffer valve element, a piston and a spring, the oil cylinder seat is provided with an oil supply channel and an oil cylinder cavity, the buffer valve sleeve is arranged on the oil cylinder seat, the piston is located in the oil cylinder cavity, the buffer valve element is arranged in the buffer valve sleeve in a sliding and matching mode, the spring is arranged between one end of the buffer valve element and the buffer valve sleeve, the other end of the buffer valve element stretches into the oil cylinder cavity, a large-flow channel and a small-flow buffer channel which are used for supplying oil to the oil cylinder cavity are arranged between the oil supply channel and the oil cylinder cavity, the large-flow channel is arranged between the oil cylinder seat and the buffer valve element, and the small-flow buffer channel is arranged on the buffer valve element. When the piston reaches a certain stroke, the buffer valve element is matched with the oil cylinder seat under the action of the spring to plug the large-flow channel, and oil passes through the small-flow buffer channel from the oil supply channel and flows into the oil cylinder cavity. The locking oil cylinder structure can achieve the quick locking function, and has the buffer function in the later locking period, and therefore tool changing speed can be improved, and meanwhile the impact phenomenon is avoided.

The invention provides a method and a device for lowering the action impact of excavating machines, and an excavating machine. The method comprises the following steps: calculating the accelerated speed of the change of the oil pressure of a pilot control loop; performing comparison and judging whether the accelerated speed is larger than a set value or not, if yes, reducing the output flow of a main hydraulic pump through an electromagnetic proportional pressure reducing valve. The device provided by the invention comprises an oil-pressure sensor, a computer, a comparator and a controller, wherein the computer is used for calculating the accelerated speed of the change of the oil pressure of the pilot control loop; the comparator is used for comparing the accelerated speed and the set value and judging whether the accelerated speed is larger than the set value or not; the controller is used for reducing the output flow of the main hydraulic pump if the accelerated speed is larger than the set value. The excavating machine provided by the invention comprises the main hydraulic pump, the electromagnetic proportional pressure reducing valve, a main valve, a pilot system, and the device for lowering the action impact of excavating machines. Through adoption of the method and the device for lowering the action impact of excavating machines, provided by the invention, the impact phenomenon of an executing mechanism when the excavating machine works is effectively avoided. The excavating machine provided by the invention does not generate impact during working, and the working is more stable.

A power gear-shifting speed-change control system comprises a stop valve, a reversing operating valve, a forward gear clutch, a backward gear clutch, a speed-change operating valve and a speed-change clutch. A shuttle valve is arranged between the reversing operating valve and the speed-change operating valve, a cushion valve is arranged between the speed-change operating valve and the speed-change clutch, oil sequentially passes through the stop valve and the reversing operating valve to flow to the forward gear clutch or the backward gear clutch, two oil outlets of the reversing operating valve are connected with two oil inlets of the shuttle valve respectively, and an oil outlet of the shuttle valve is connected with an oil inlet of the speed-change operating valve. The power gear-shifting speed-change control system has the advantages that whether buffering is performed is determined according to the pressure building characteristics of every clutch, different pressure building characteristics can be obtained according to every speed gear and different requirements of different machine types, and accordingly gear pressure control systems do not influence each other.

The invention discloses an automatic device for measuring setting time of a concrete mixture. The device comprises a portal type rack fixed on a machine base, wherein an adjustable-speed motor, a worm gear and worm pair driven by the adjustable-speed motor as well as a microcontroller are arranged on a cross beam of the portal type rack; an output control end of the microcontroller is connected with a control input end of the adjustable-speed motor, and a data output end of the microcontroller is connected with a data signal input end of a displayer; a travel scale and a perpendicular lead screw driven by the worm gear and worm pair to move up and down are arranged on the cross beam of the portal type rack perpendicularly downwards, and a probe mounting seat is arranged at the lower end of the perpendicular lead screw; a sample platform and a weighing sensor are arranged under the probe mounting seat and on the machine base from top to bottom, and a signal output end of the weighing sensor is connected with a signal input end of the microcontroller through an analog signal / digital signal converting module. The device has the advantages of automatic and constant-speed pressurization, avoidance of impact force, high intelligent degree, accurate penetration depth, smallness and portability.

The invention provides a manual control valve of a harvester and belongs to the technical field of hydraulic pressure. The manual control valve of the harvester solves the problem that an existing manual control valve of a harvester is poor in control stability and control accuracy degree. The manual control valve of the harvester comprises a valve body; a first reserving control valve and a second reserving control valve are connected with an oil inlet and an oil returning port in a series-parallel connection manner; a first control oil way of the first reserving control valve can be communicated with a first control oil port in the valve body; fixing throttling holes are formed in the first control oil way; a communicating oil way is further arranged on the first reserving control valve; the second reserving control valve is provided with an oil supplying oil way and an oil inflow oil way which is provided with throttling small holes; a second control oil way and a third control oil way of the second reserving control valve can be communicated with a second control oil port and a third control oil port in the valve body correspondingly; the second reserving control valve is further provided with a turning-connection oil way communicated with a turning-connection oil port in the valve body; and the oil supplying oil way and the turning-connection oil way are connected through a flow pressure control valve. The manual control valve of the harvester improves the control precision and the control stability.

The invention discloses a high-pressure fluid extraction separator, which comprises a kettle body, a kettle cover and a jacket wrapping the outer wall of the kettle body; a water inlet and a water outlet are formed in the jacket, an air outlet and an air inlet provided with an air inlet pipe are formed in the two sides of the upper portion of the kettle body respectively, one end of the air inletpipe stretches out of the kettle body, and the other end of the air inlet pipe stretches into the kettle body. A liquid collector is connected to the bottom of the kettle body, a through hole and a connecting pipe communicated with the through hole are arranged at the bottom of the liquid collector, and a hot water pipe is inserted into the liquid collector and connected with the liquid collectorthrough a connecting part, wherein a hot water inlet end and a hot water outlet end of the hot water pipe penetrate through the through hole from the inside of the liquid collector and extend to the outside of the liquid collector. According to the present invention, the extract is accumulated in the liquid collector through the liquid collector and is heated by the hot water pipe, such that the temperature of the extract converted into the easily-flowing state is effectively controlled, the energy consumption loss caused by the use of the jacket to heat the extract is avoided; therefore, theseparation efficiency and the separation effect are improved, the extraction medium (solvent) loss is reduced, and the cost is reduced.

The invention discloses a stop mechanism for a transfer gripper in an offset press. The stop mechanism comprises a transfer roller, a transfer arm, a gripper opening and closing mechanism, and a protection mechanism. The gripper opening and closing mechanism comprises a driving gear, a gripper opening and closing control cam, a pair of driving swing bars, and a swing bar cam, wherein the driving gear and the gripper opening and closing control cam are fixedly mounted on a drive side shaft end of the transfer roller, one end of each driving swing bar is fixedly mounted on a swing bar shaft and the swing bar cam is mounted on a camshaft. The protection mechanism comprises a stop cylinder mounted on the inner side of a transmission side wallboard, a V-shaped swing bar, a stop link and a stop swing bar. The V-shaped swing bar is rotatably mounted on the inner side of a drive side wallboard through a pile head. One end of the V-shaped swing bar is hinged to a piton rod of the stop cylinder, and the other end of the V-shaped swing bar is hinged to one end of the stop link. The other end of the stop link is hinged to one end of the stop swing bar. The other end of the stop swing bar is fixed to the camshaft. The stop mechanism is capable of avoiding waste paper in case of an anomaly of paper on a discharge board.

The invention discloses a pressure ulcer prevention medical bed. In order to accurately judge the lying posture, the lying position and the like of a patient, a first sensor and a second sensor are adopted, and the first sensor and the second sensor are used for sensing the magnitude of stress transmitted from the body of the patient when a working rod works leftwards, rightwards, upwards and downwards. Along with the movement of the working rod, the bedspread wraps the patient, a series of actions such as lying flat, lying left, lying flat, lying right, lying flat and hanging lying are automatically carried out according to a set program and a set cycle period, and the pillow is always kept in a state of resting on the head of the patient. In addition, the massage mechanism can massage the back of the patient, a cold and hot air blower is arranged below the bed cover to blow comfortable air to the patient, and the patient with limb movement inconvenience can be automatically lifted tothe bed and can also be lifted to the ground under the condition that no nurse exists. The medical bed can also be used as a rocking bed for children, and adults can be used as a hammock. And the curtain type baby diapers are rolled on the roller shutter barrel, so that the baby diapers can be replaced in a full-automatic manner.

The invention discloses a damper of an automobile damping mechanism, which is provided with a bottom cylinder body and a piston which is arranged in the cylinder body in a free reciprocating motion type and has the same shaft with the cylinder body; the bottom cylinder body consists of a damper body and a top cover; the piston consists of a piston rod which passes through the top cover and a bottom surface part which is matched with the damper body; the internal wall of the damper body is uniformly provided with a plurality of curve troughs which are convex in the middle, concave at two ends and symmetrical at the left and the right along the direction of the axis line; the curve formula of the curve troughs is that y is equal to a multiplied by the absolute value of x<3>; wherein, a is less than 1 and more than minus 1; furthermore, the more the quantity of the curve troughs is or the greater the inflation pressure in the damper body is, the greater the coefficient a is; the shape of the bottom surface part of the piston which moves up and down along the curve troughs is corresponding to the shape of the internal chamber of the damper body at the center of the curve troughs. The invention has the advantages that the structure is simple, the application and operation are simple, the invention can effectively relieve the problem of excessive acceleration which is also the impact and jounce problem of the vehicle body which is caused by the change of the upper and lower speed of the vehicle body, and the discomfort of the passengers is greatly lightened.

The invention discloses a speed classification system for crane balance weight oil cylinder synchronous movement and a crane. The speed classification system for adjusting oil cylinder synchronous movement comprises a first reversing valve, a second reversing valve, a first oil port, a second oil port, a flow dividing and collecting valve and damping parts. The flow dividing and collecting valve comprises a first flow dividing port, a second flow dividing port and a flow collecting port, the flow collecting port communicates with the first oil port, the first flow dividing port communicates with a first connector of the first reversing valve, a second connector of the first reversing valve communicates with a rodless cavity of a first oil cylinder, and a third connector of the first reversing valve passes through the corresponding damping part and then communicates with the rodless cavity of the first oil cylinder. The second flow dividing port communicates with a first connector of the second reversing valve, a second connector of the second reversing valve communicates with a rodless cavity of a second oil cylinder, and a third connector of the second reversing valve passes through the corresponding damping part and then communicates with the rodless cavity of the second oil cylinder. The second oil port is used for communicating with a rod cavity of the first oil cylinder and a rod cavity of the second oil cylinder. According to the system, two-oil-cylinder synchronous movement speed classification control and synchronous control are achieved through the flow dividing and collecting valve, the two damping parts and the two reversing valves.

The invention provides balanced valve which comprises a main valve body (1) and a main valve core (4), wherein the main valve body (1) is provided with a positive oil outlet (A) and a reverse oil outlet (B); the main valve core (4) comprises a first acting surface (A1) and a second acting surface (A2) which are opposite to each other; the first acting surface is exposed in a first acting cavity (3) communicated with the reverse oil outlet; the second acting surface is exposed in a second acting cavity (17) communicated with the reverse oil outlet through a dumping groove (5); and the balanced valve further comprises a guiding control module which enables the second acting cavity to be selectively communicated with an oil draining port through a guiding control oil port (X). In addition, the invention also provides a hydraulic cylinder expansion control loop and a hydraulic crane. Due to the guiding control method, a large control ratio can be obtained through controlling the size of a guiding piston rod, the descending speed limitation control of the balanced valve is more sensitive, the influence of the load pressure on the openness of the main valve core is slight, frequent shaking can not be generated, the work stability is good, and the energy-saving effect is excellent.

The invention provides a quick reset device for a derailed vehicle, which includes a bottom plate, a slide plate, a transmission screw, a screw nut, a rolling body and a hydraulic crane. First place the bottom plate welded with the positioning retaining ring and the positioning frame under the derailment car body, then place the slide plate on the rolling body, connect the transmission screw in the nut, and then place the hydraulic crane in the middle of the slide plate. Manually raise the hydraulic crane to lift the derailed vehicle to an appropriate height; use the lever to pull the transmission screw to rotate, and drive the slide plate through the screw nut to move forward or backward together with the derailed vehicle body lifted by the hydraulic crane until Push the derailed car body to the position where it returns to the track; then manually return the hydraulic crane to slowly drop the derailed car body onto the track. The invention is safe and reliable, convenient and quick to operate, time-saving and labor-saving, fast in reset speed, high in operating efficiency, controllable in lateral movement of the vehicle, can avoid accidents of personal injury and equipment damage, and ensures continuity of production.

The invention discloses a self-lubricating floating sandwich channel type electrified railway power transmission system, and belongs to the technical field of contact current transmission. The system comprises two self-lubricating floating channels, a self-lubricating conducting plate and a three-dimensional supporting protective cover; the self-lubricating conducting plate is located in the three-dimensional supporting protective cover, and therefore the problem that the current-receiving quality of a railway vehicle is influenced by unfavorable natural conditions is avoided; the self-lubricating conducting plate is made of conductors such as copper, aluminum and steel, and therefore the problems of metal-impregnated carbon sliding plate impacting and block falling are avoided; in addition, due to the fact that the back sides of the two self-lubricating floating channels are both supported by springs, the impact phenomenon generated when the self-lubricating conducting plate enters the space between the two self-lubricating floating channels is avoided, the service life of a current collector is prolonged, and the driving safety is guaranteed.

The invention discloses a diaphragm capsule service life test system. The system comprises a high-temperature oven, the high-temperature oven is connected with a first switching valve, the first switching valve is connected with a second switching valve and a positive pressure generation unit, the second switching valve is connected with a vacuum generation unit, and the positive pressure generation unit comprises a high-pressure air source. The high-pressure air source is sequentially connected with a pressure reducing valve, a first electro-pneumatic proportional valve and a first electromagnetic valve, and the first electromagnetic valve is connected with the first switching valve. Thr electro-pneumatic proportional valve, the pneumatic valve, the electromagnetic valve, a pressure transmitter and the like are integrated into a full-automatic electric control system, the boosting speed is controllable, and the boosting range is adjustable. Aiming at the fatigue test of the vacuum diaphragm capsule, a large-volume buffer container is arranged and is used for equalizing the positive pressure and the negative pressure of a pipeline, so that the vacuumizing time is effectively reduced. And meanwhile, the positive pressure in the pipeline can be equalized, so that the dependence on a high-performance vacuum pump is reduced.

The invention discloses a simple anti-sedimentation device for an aluminum alloy track of a self-propelling car. The device comprises a movable track and a fixed track, wherein C type grooves which are symmetrically formed left and right are respectively formed in the tops and the bottoms of the two tracks. The device is characterized in that an anti-sedimentation plate is fixedly mounted at the bottom of one end, which is in butt joint with the movable track, of the fixed track; and one end of the anti- sedimentation plate is fixedly connected with the bottom of the fixed track, and the other end extends out facing to the movable track to bear the bottom of the movable track. The device disclosed by the invention can avoid the situation that after bearing a load, the movable track sinks relative to the fixed track, can avoid the phenomenon that an altitude difference occurs between the two tracks, so that the wheels of the self-propelling car impact at the butt joint part of the two tracks, and can better protect an main car driving shaft and an auxiliary car shaft of the self-propelling car, so that the service life is prolonged. The simple anti- sedimentation device is mainly used for preventing the movable track in the aluminum alloy track of the self-propelling car from sinking.

The invention discloses a vacuum shock protection method for an ion implantation apparatus, which is used for a process of feeding a process gas into an ion source vacuum cavity. The method uses an ion source vacuum height gauge, a gas-feeding pipeline pressure sensor, a gas-feeding isolation valve, branch isolation valves and a mass flowmeter and belongs to the field of manufacturing of semiconductor devices. The method comprises the following steps: selecting an SDS low-pressure gas bottle specified by the process, setting the mass flowmeter to zero, opening the branch isolation valve corresponding to the gas bottle, opening the gas-feeding isolation valve for a while, closing the gas-feeding isolation valve for a while, monitoring the ion source vacuum height gauge in the opening and closing processes to avoid vacuum breaking of the ion source, repeating the opening and closing processes in such a manner until the detection value from the pressure sensor is less than the set value while opening the gas-feeding isolation valve, and setting the mass flowmeter to the initial value set in the process, and thus preventing residual gas in the gas-feeding pipeline and gas leaking out of the mass flowmeter from causing shock breakage on the ion source vacuum.

The invention relates to an axle control type brake control system and a rail transit vehicle, the axle control type brake control system comprises an electronic brake control unit and a pneumatic brake control unit, the pneumatic brake control unit comprises a main gas circuit, and an emergency brake adjusting module, a service brake and anti-skid adjusting module and a remote relieving module are arranged on the main gas circuit. The emergency braking adjusting module comprises a pressure reducing valve and a first electric proportional valve, the service braking and anti-skid adjusting module comprises a second electric proportional valve, and the remote relieving module comprises a first electromagnetic valve and a second electromagnetic valve. The air inlet end of the main air path is used for being connected with a main air pipeline, and the air outlet end of the main air path is used for being connected with a basic braking unit. Precise control over the braking force of the train can be achieved, the service life of each valve in the control system is longer, the number of parts is smaller, the size is smaller, the system is more simplified, the weight is lighter, the response time of braking control can be greatly prolonged, and train operation can be safer.

The invention discloses a shock absorbing device for automobiles, comprising an outer cylinder, an inner cylinder, a piston slidingly sealed in the inner cylinder, a flow passage member sealed at the bottom of the inner cylinder, and a valve cover. an annular liquid cavity, the flow-over component is provided with a damping hole that communicates the inner cylinder cavity with the annular liquid cavity, the valve cover can be slid up and down on the flow-over member to close or open the orifice, and the bottom of the piston An anti-bottoming piece is connected, and the anti-bottoming piece has a non-contact downward force on the valve cover during the process of descending with the piston and approaching the valve cover, so that the valve cover closes the damping hole to prevent the further descending of the piston; During the downward movement of the piston rod, the non-contact downward force is exerted on the valve cover through the anti-bottoming element, so that the valve cover is sealed in the damping hole, the damping fluid stops flowing from the inner cylinder to the annular liquid chamber, and the piston stops downward, preventing the piston rod from descending. Bottom out to avoid shock bottoming when driving on rougher surfaces.

The invention relates to the field of durometer calibration, in particular to a shore durometer test force calibration device, which comprises: a special calibration rack, wherein the special calibration rack comprises a base and a lead screw nut transmission mechanism, the nut transmission mechanism is composed of a handle, a lead screw, a nut and a clamp, the clamp is arranged on the lead screwthrough the nut, and the handle drives the lead screw to enable a to-be-measured piece to move downwards to contact with a force measuring sensor; the force measuring sensor which is arranged on the base and is placed under a shore durometer to be measured; and a high-precision digital dynamometer which is connected with the force measuring sensor through a cable and is used for reading a numerical value. According to the invention, the shore durometer is fixed on the clamp, and the handle is shaken to drive the lead screw to rotate so as to enable the test force to be slowly and stably applied to the shore durometer, so that the impact phenomenon in the stress application process can be avoided, and the shore durometer can be kept fixed when the test force is applied to a rated force value.

It relates to a water-saving method including an improved automatic pressure regulator, because the automatic pressure regulator (58) is sequentially provided with a filter screen (58d), a water-through inner plug (58c), a movable pressure regulator (58) from the water inlet to the water outlet Plug (58a), pressure regulating spring (58f), return water pressure chamber (58g), water reaches the nozzle after the automatic pressure regulator, and the water pressure required by the movable pressure regulating plug (58a) at the water outlet nozzle is greater than and When it is equal to the water pressure provided by the water inlet end, under the action of the pressure regulating spring (58f), it is away from the filter screen (58d) and the water inner plug (58c) to ensure the maximum water flow; when the water outlet nozzle and water When the water pressure required by the device is lower than the water pressure provided by the water inlet end, the excess water will flow into the return water pressure chamber (58g) and push back the movable pressure regulating plug (58a) under the action of back pressure to approach the water return pressure chamber (58g). Said water-through inner plug (58c) is until pressure balance on both sides, promptly protects water outlet nozzle and water device to be beneficial to water saving and pressure overload protection.

Aiming at the shortcomings in the prior art, the present invention designs an electric control device specially used for the forward-moving rotary parking equipment of the upper platform. The device is used to detect the state of the upper table and implement operation control on the lifting motor, moving motor and rotating motor. It uses a frequency conversion device to drive the lifting motor, moving motor and rotating motor separately in time-sharing, and uses a rotary encoder to accurately monitor the operation of the upper table. It even replaces the traditional travel switch for control. The device includes a state detection component, a motor drive component and a main control component, which can improve the intelligence of the equipment and avoid the impact phenomenon when the motor starts and stops; it can effectively improve the operation safety of the equipment and the service life of the electromechanical device of the equipment. The device uses a single-chip microcomputer main control chip, which has stronger adaptability to the matching man-machine interface device and safety device, and can even achieve dynamic monitoring and disposal of loads. Popularization and use of the present invention will have higher social and economic benefits.

The invention discloses an electronic proportioning valve. The electronic proportioning valve comprises a proportioning valve body, the proportional valve body comprises a valve body and a conical upper cover; an air inlet cavity and an air outlet cavity which are communicated with each other are formed in the valve body; a valve element assembly used for controlling the opening degree of the valve body is arranged between the air inlet cavity and the air outlet cavity. A bottom cover is connected to the bottom of the valve body in an embedded mode. The valve element assembly is elastically installed on the bottom cover. A piston cavity is formed in the top of the valve body; a piston is arranged in the piston cavity in a sliding manner; one end of the valve element assembly extends into the piston cavity and is connected with the piston in an abutting mode. A pre-pressing device used for adjusting the preset threshold value of the piston is arranged in the upper cover. The side end of the upper cover is provided with an air valve with an air inlet or air outlet function; the outer side wall of the valve body is provided with a barometer used for detecting the pressure of gas in the gas outlet cavity. The electronic proportioning valve is simple in structure and high in control precision, stepless adjustment of pressure can be achieved, and the impact phenomenon during reversing of a switch type air valve is avoided.

The invention discloses a power distribution cabinet applied to a high-humidity environment, and belongs to the field of power equipment. The power distribution cabinet applied to a high-humidity environment comprises a cabinet body, a base arranged on the lower side of the cabinet body, and an anti-static mesh cover arranged on the outer side of the cabinet body. Installation outer edges are integrally formed on the left and right sides of the base. Installation holes are formed in the four corners of the installation outer edges. Installation clamping blocks are connected to the four cornersof the bottom of the anti-static mesh cover. The bottom of each installation clamping block is connected with a grounding insertion rod. A bearing net plate is arranged on the lower side in the cabinet body. A fixing plate is arranged at the bottom in the cabinet body. A cavity is formed in the fixed plate, and a plurality of ventilation openings are formed in the upper side of the fixing plate and are communicated with the cavity. A dust cover is arranged on the inner wall of the right side of the cabinet body. Continuous dehumidification of the interior of the cabinet body can be realized,and static electricity generated during working of the cabinet body can be eliminated to improve the safety. Moreover, the power distribution cabinet is convenient to install, position and use, and has good damping and buffering effects and high stability.

The invention discloses a stop mechanism for a transfer gripper in an offset press. The stop mechanism comprises a transfer roller, a transfer arm, a gripper opening and closing mechanism, and a protection mechanism. The gripper opening and closing mechanism comprises a driving gear, a gripper opening and closing control cam, a pair of driving swing bars, and a swing bar cam, wherein the driving gear and the gripper opening and closing control cam are fixedly mounted on a drive side shaft end of the transfer roller, one end of each driving swing bar is fixedly mounted on a swing bar shaft and the swing bar cam is mounted on a camshaft. The protection mechanism comprises a stop cylinder mounted on the inner side of a transmission side wallboard, a V-shaped swing bar, a stop link and a stop swing bar. The V-shaped swing bar is rotatably mounted on the inner side of a drive side wallboard through a pile head. One end of the V-shaped swing bar is hinged to a piton rod of the stop cylinder, and the other end of the V-shaped swing bar is hinged to one end of the stop link. The other end of the stop link is hinged to one end of the stop swing bar. The other end of the stop swing bar is fixed to the camshaft. The stop mechanism is capable of avoiding waste paper in case of an anomaly of paper on a discharge board.

The invention provides a structure of a swing valve driving oil cylinder of a concrete pump. A plunger is arranged in a cylinder body; a cylinder cover is arranged at the bottom of the cylinder body; a compression spring is arranged in a blind hole formed in the middle of the plunger; a collision block is fixedly mounted at the outer end of the spring; and a collision rod is mounted and fixed in the middle in the cylinder cover through a bolt. According to the invention, impact phenomenon and damages due to the impact phenomenon in the working of the traditional swing valve driving oil cylinder of the concrete pump can be overcome.

The invention discloses a crawler type magnetic adsorption cable detecting robot. The crawler type magnetic adsorption cable detecting robot comprises a framework, a V-shaped rubber crawler, a clutch, a falling speed limiting device and at least two V-shaped loading wheels, wherein the V-shaped rubber crawler is coated on the periphery of all the V-shaped loading wheels; magnetic adsorption units are packed in the V-shaped rubber crawler; one or more V-shaped loading wheels are driving wheels; the falling speed limiting device is connected with one of the V-shaped loading wheels through the clutch; the framework comprises machine frames which are symmetrically arranged on two sides of the V-shaped rubber crawler; and each of the machine frames adopts a two-section type structure. Through the adoption of the structure of the crawler type magnetic adsorption cable detecting robot disclosed by the invention, the structure is compact, the operation is simple and convenient, and the obstacle surmounting capacity is high; the derailing preventing capacity of the robot can be improved by the V-shaped rubber crawler; the magnetic adsorption units are packed in the V-shaped rubber crawler, so that the collision between the crawler and the surface of a pull cable can be buffered; besides, according to the radius of the loading wheels, the diameter of the magnetic adsorption units is designed, so that the phenomena of impacting generated when the crawler goes around the loading wheels can be avoided. In addition, the falling speed can be adjusted, and the crawler type magnetic adsorption cable detecting robot disclosed by the invention can adapt to the push cables in different inclinations.

The invention discloses an air inlet flange assembly which comprises a flange body, wherein an axle hole is formed in the middle of the flange body in a penetrating manner in an axial direction of the flange body; an air suction opening is formed in a periphery face of the flange body; an air inlet cavity communicated with an air cylinder is arranged on the upper edge of the flange body in a penetrating manner in an axial direction of the flange body; an air suction passage communicating the air suction opening with the air inlet cavity is arranged on the end face of the flange body. The air inlet flange assembly can avoid liquid refrigerant impact in an air suction process of a compressor. The invention further discloses a horizontal compressor applying the air inlet flange assembly.