86results about How to "Reduce physical labor intensity" patented technology

The invention discloses a testing device for an intelligent electric energy meter and particularly relates to an intelligent uncovering and keying device for the intelligent electric energy meter. The invention is characterized in that the intelligent uncovering and keying device comprises a universal vacuum chuck head, a lever-type press-button manipulator, a program-control electric screw driver which are controlled by a computer and are mutually coordinated for operation; the lever-type press-button manipulator is driven by a first pneumatic device; the universal vacuum chuck head is connected with a guiding rod; and the guiding rod is driven by a second pneumatic device to move along a guide rail on a positioning guide rail support. The intelligent uncovering and keying device for theintelligent electric energy meter completely replaces manual operation; the computer controls the device to automatically loose a screw, press a programming switch and tighten the screw and the like;the operation is accurate and rapid; the intensity of physical labor of operators is greatly reduced; and the work efficiency of inspection is improved.

The invention relates to a semi-automatic rail grinding machine comprising a steel rail fixing platform, a translation platform and a plurality of grinding assemblies. The steel rail fixing platform is arranged and horizontally fixed on a steel rail; the translation platform capable of horizontally moving is connected with the steel rail fixing platform via a sliding mechanism; a plurality of grinding assemblies are arranged on the translation platform; and grinding heads of the grinding assemblies pass through openings on the steel rail fixing platform and the translation platform to be respectively aligned to a plurality of to-be-grinded rail surfaces of the steel rail in a staggered way. All surfaces of welding parts of the well-paved seamless steel rail are grinded by the grinding assemblies installed in a staggered way; human labor intensity can be reduced due to the semi-automatic design, and work efficiency and economic benefits can be improved; the semi-automatic grinding machine is simply structured and has novel design and small equipment size; the grinding machine can be conveniently carried, thereby being easily promoted and used; and the semi-automatic rail grinding machine can work on the well-paved steel rail, so troubles of transportation and construction can be avoided and rail paving speed can be greatly improved.

The invention provides a workpiece-taking manipulator with a smoke discharge function, and applies to the field of casting production of metal parts of an automobile. The workpiece-taking manipulator structurally comprises a gripper, wherein a smoke hood is arranged above the gripper, the gripper and the smoke hood are connected with a head box, and the smoke hood is communicated with a smoke discharge pipeline; a gripper drive cylinder is arranged on one side of the head box, and a spiral arm is connected with the outer surface of the head tank and a lifting oil cylinder which is mounted on a supporting seat; a stand column and a rotary oil cylinder are further arranged on the supporting seat, a linear guideway is arranged on the stand column, and the rotary oil cylinder is connected with the rotary arm through a rotating joint seat. With the adoption of the workpiece-taking manipulator, dust and smoke produced in a casting process can be collected as far as possible, and meanwhile, the automatic workpiece taking function is achieved.

The invention discloses a novel whole-rod-type sugarcane combine harvester and a leaf peeling conveying device thereof. The novel whole-rod-type sugarcane combine harvester comprises a machine frame, a mechanical transmission part, a sugarcane supporting device, a knife disc device, the leaf peeling conveying device and a sugarcane collecting device. A gradually-opening type combined knife structure is used for chopping sugarcanes, a knife is arranged on a knife disc in a gradually-opening-line shape, along with rotating of the knife disc, the contact face of a blade and a sugarcane can be expanded gradually, the cutting face becomes larger and deeper and is expanded gradually, the blade is provided with teeth, so that common sugarcane chopping is changed into sugarcane cutting, sugarcane head breaking is lowered, in addition, a leaf jaw formed by a spiral spring rod or a rubber plate is arranged on a leaf peeling belt, compared with a common leaf removing device, efficiency is higher, and effect is better. The novel whole-rod-type sugarcane combine harvester can complete all the work in the whole process from sugarcane chopping to sugarcane collecting conveying, and the labor intensity of people is greatly lowered.

The invention provides a sewer cleaning machine and belongs to municipal engineering machinery. The sewer cleaning machine comprises a camera, a plurality of chain wheels on two sides, chain rails assembled on the chain wheels, a driving device shell arranged in a sealing mode, a sludge turnover device arranged at the front end, a sludge reverse conveying device arranged on the rear side of the shell, a wireless antenna arranged at the top, a wireless information transmission device connected with the wireless antenna, and a wireless remote control device matched with the wireless information transmission device, an infrared camera is arranged at the upper portion of the shell, and the infrared camera is connected with the information transmission device. Through the cleaning machine, the physical labor intensity of workers can be relieved, the cleaning speed of waste such as sludge in a sewer is increased, and the problems that workers feel unwell and suffer from gas poisoning in the severe operating environment in the sewer can be solved.

The invention relates to a mineral deep hole drilling carriage unit, which comprises a main engine and a pump station. The main engine comprises a stand (1), crawler devices (2) and a work mechanism (3), wherein the crawler devices (2) are arranged at the two sides of the stand (1); the work mechanism (3) is arranged on the stand (1). The work mechanism comprises a rotary chassis (3.1), an upright post (3.2), an upper support post (3.3) and a sliding assembly (3.11). The mineral deep hole drilling carriage unit is characterized in that a first oil cylinder (3.4) is arranged in the upright post (3.2); an outer sleeve of the upright post (3.2) is provided with a middle sleeve (3.5); a piston rod of the first oil cylinder (3.4) is connected with the top end of the middle sleeve (3.5); the middle sleeve (3.5) and the outer sleeve of the upper support post (3.3) are provided with outer sleeves (3.8); one end of a second oil cylinder (3.9) is connected with the bottom of a side wall of the middle sleeve (3.5) through a connecting piece while the other end is connected with the top of a side wall of the outer sleeve (3.8) through the connecting piece; and a compensating oil cylinder (3.12) is aslant arranged between the sliding assembly (3.11) and the outer sleeve (3.8). The invention has the advantages of low height of the machine body, narrow width, large adjustable range of drilling angles, running flexibility and strong applicability.

The invention discloses a tool special for assembling and disassembling a contact finger of a disconnecting switch. The tool comprises a bottom plate, a first upright plate, a second upright plate, a rotating shaft, a first contact finger clamping device, a handle, a second contact finger clamping device and a toothed plate baffle plate, wherein the first upright plate and the second upright plate are fixedly and oppositely arranged on the two sides of the right side of the bottom plate; the rotating shaft penetrates through the first upright plate and the second upright plate; the first contact finger clamping device is sleeved on the rotating shaft; the handle is fixedly arranged on the first contact finger clamping device; the second contact finger clamping device is fixedly arranged on the left side of the bottom plate; the toothed plate baffle plate is arranged between the first contact finger clamping device and the second contact finger clamping device; the first contact finger clamping device and the second contact finger clamping device are provided with clamping components used for clamping the contact finger; and when the handle is rotated, the first contact finger clamping device can be rotated along the rotating shaft. By adopting the tool, the cooperation among the contact finger, a compression spring, a pin and a toothed plate can be enhanced, and an opening of the contact finger can be pressed open with less effort.

The invention relates to an intelligent standing, sitting and lying function rehabilitation training device, which is characterized by comprising a bed frame with a movable bed surface. The movable bed surface comprises a lower section corresponding to a part from feet to knee joints of a patient, a middle section corresponding to the knee joints to hips of the patient and an upper section corresponding to the hips to the head of the patient, the lower section is connected with the middle section via a hinge while the middle section is connected with the upper section via a hinge, actuating mechanisms are disposed on the bed frame, a pressure sensor is further disposed under each section of the bed surface, and a computer system is respectively connected with the pressure sensors and the actuating mechanisms; and the computer system measures pressure of the bed surface in real time, calculates thrust, speed and stroke which are required to be outputted for the actuating mechanisms and realizes preset functions. Compared with the prior art, the intelligent standing, sitting and lying function rehabilitation training device has the advantages that a therapist can set the device to provide required auxiliary power for the patient according to physical conditions of the patient so as to assist the patient to realize movement therapy at lying, sitting and standing positions, locomotion organs and the nerve system of the patient are progressively trained and recovered, and physical labor intensity of the therapist is reduced.

In an existing ore drawing simulation experiment, once an experiment condition is changed, an experiment model needs to be remanufactured so that a lot of materials are wasted, an experiment period is long and experiment cost is high. The invention aims at solving above problems, provides multi-segment indoor ore drawing equipment capable of automatically adjusting a height and a bottom structure and a method thereof and belongs to the simulation mine ore drawing technology field. The multi-segment indoor ore drawing equipment comprises a model waste rock box, several ore boxes, a pedestal and an elevator. The model waste rock box and the several ore boxes are placed from top to bottom, and the ore box at a lowest end is placed on the pedestal. A plug-in type structure box formed by the two upper and lower boxes is taken as a model ore box. Through synchronous up-and-down motion of four worm gear machines along a screw (a lead screw), an upper box body of the ore box is driven to move up and down so as to realize segmented height adjusting. Through combination of the box body and a replaceable panel, the experiment model can be repeated used, materials are saved and the experiment period is shortened.

The invention belongs to large-scale mechanical fuelling equipment for coal mine excavation and production and particularly relates to a movable automatic gas station. A storeroom (3) in which four oil tanks (10) are arranged in parallel is arranged above a mining vehicle body (1); a pump and motor integrated oil feeding device (4) is arranged above each oil tank (10); each pump and motor integrated oil feeding device (4) is communicated with a first ball valve (9), a second ball valve (11) and a third ball valve (12) by branch connecting pipes (6); a main connecting pipe (6-1) is provided with the branch connecting pipes (6); the main connecting pipe (6-1) is provided with an oil atomizer (5), a two-stage filter (13), a main pipeline filter (14) and a main pipeline ball valve (15) sequentially from left to right; the left side face of the storeroom (3) is provided with a hook (2); a sand box (8) is arranged to connect with the left side of the storeroom (3); and fire extinguishers (7) are arranged at two sides of the sand box (8). The movable automatic gas station, disclosed by the invention, has the advantages of being high in automation degree, lightening physic labor intensity of workers, greatly improving working efficiency, guaranteeing safe operation of the equipment and improving service life of the equipment.

The invention relates to an environment-friendly automatic feeding system of a three-roller grinder, comprising the three-roller grinder which comprises an iron frame, a front roller, a middle rollerand a back roller which are arranged on the iron frame, and a scraper discharging hopper arranged in front of the front roller; a slurry revolving pan provided with a stirring device is arranged belowthe scraper discharging hopper of the slurry revolving pan, a feeding end of a screw pump is communicated with the bottom of the slurry revolving pan via pipes, the discharging end of the screw pumpis connected with a pipe group, the other port of the pipe group is arranged above the position between the middle roller and the back roller, the stirring device comprises a stirring paddle and a scraping sheet fixed on the hinge of the stirring paddle, the screw pump is provided with a PLC variable frequency governor, the pipe group is constructed by at least three demountable pipes, and the pipe group is provided with a flowmeter. The invention is characterized by reducing volatilization of organic gas, saving energy consumption for ventilation and emission reduction, enhancing accuracy ofmaterial blending, reducing manual cost, and improving working efficiency of grinding.

The invention discloses a joint protection plate for an underground continuous wall, a construction machine and a construction method, and relates to a construction device for protecting joints of a continuous all in hydraulic and hydro-power engineering and a construction method. The protection plate is an arc-shaped plate, and comprises a pulling plate, a standard plate and a bottom plate. The construction machine for the joint protection plate of the underground continuous wall comprises a plate pulling system, a pulling cushion frame and a top plate reinforcing device of an original reinforcement cage framework; the plate pulling system comprises a rail pin beam and plate pulling machines; the two ends of the rail pin beam are supported by the plate pulling machines respectively; the other end of one plate pulling machine is arranged on the ground, and the other end of the other plate pulling machine is arranged on the lifting cushion frame. The joint protection plate has the beneficial effects that in underground continuous wall construction, the joint protection plate is arranged in a groove-shaped steel plate joint, so that concrete is prevented from entering a groove of the steel plate joint and being bonded with the joint of the groove-shaped steel plate, a high construction speed is achieved, the labor intensity of workers is lowered, the conventional bag-throwing construction method is broken through, and a beneficial condition is created for overlapping construction of wall plates.

The invention provides a method for acupuncture operation by using a mechanical arm. The method comprises the following steps of performing the standardized processing on the acupuncture points and the acupuncture data to form a standardized acupuncture prescription; acquiring the image data of the part to be acupunctured; according to the acquired image data, combining the acupuncture prescription, and determining the acupuncture point condition and the needle application strategy of the part to be acupunctured; and completing the acupuncture operation by the mechanical arm according to the acupuncture point condition and the needle application strategy of the part to be acupunctured. The method has the advantages that the acupuncture treatment technology which is remarkable in curative effect but difficult to master is standardized and simplified, the rapid popularization and use are facilitated, the cost for acupuncture treatment of the patient is reduced; the threat to the health of an acupuncture physician by the ill body and the infectious disease is reduced, the physical labor intensity of the acupuncture physician is reduced, the acupuncture physician is relieved from a lotof repeated work, and the acupuncture operation technology for effective treatment can be rapidly and accurately copied.

A wire rope plugging device, which is composed of an operating handle, an introduction slot, a threading needle, a guide rail, a fixed clip, a bracket, a spring, a pedal, a baffle, and an ejector rod. The threaded needle is fixed on the guide rail of the bracket through the fixed clip, There is an operating handle on one side of the needle, and there is an introduction groove on the needle head for threading the needle. The end of the threading needle is stuck on the upper end of the ejector rod, and the lower end of the ejector rod is connected to the pedal and fixed on the bracket. There is a spring between the pedal and the guide rail. The gap between the needle of the needle and the two baffles on the support. This device prevents the wire rope from being broken and the galvanized layer from being damaged; the mechanical lever principle of the foot pedal makes it easier to thread the needle into the wire rope, and the strength and angle of insertion can be precisely controlled, effectively reducing the intensity of physical labor ; It only takes 12 minutes to insert a 20mm diameter wire rope cover with this device, which greatly improves the work efficiency and reduces the labor intensity, and is especially suitable for mass production of standardized rope sets and ring ropes.

A small drain pipe cleaner belongs to the field of municipal facilities. According to the small drain pipe cleaner, walking wheels are oppositely arranged on both sides of a sealing housing; a driving device and a control device are arranged inside the sealing housing; the front surface outside the sealing housing is provided with a screw which is connected with a motor; the rear of the sealing housing is provided with a reversed sludge conveying device which is provided with a baffle; the front-back middle line of the bottom of the sealing housing is provided with a universal wheel, which is in triangular distribution together with the walking wheels on both sides of the sealing housing. The small drain pipe cleaner is provided with a remote control device. The small drain pipe cleaner can reduce the labor intensity of drain pipe cleaning workers, accelerate drain pipe cleaning processes and meanwhile ensure no obstruction of municipal drain pipes.

The invention relates to a head-mounted stereo-display microsurgery operation system. The head-mounted stereo-display microsurgery operation system comprises an operation stereoscopic microscope system, a high-definition camera, an image processor, head-mounted stereo-display systems, a display, minitype cameras and image conversion switches. The high-definition camera is used for collecting operation field images through the operation stereoscopic microscope system; the collected images are converted by the image processor according to the position of an operator; erect images, which each operator can see, are displayed on the head-mounted stereo-display system of each operator; the operators can observe an operation region and the environment of an operating room by utilizing the image conversion switches and the head-mounted minitype cameras. The head-mounted stereo-display microsurgery operation system has the advantages that the structure is simple, the use is convenient, the effect is remarkable, the operability is high and the implementation is easy.

The invention discloses a mechanical arm with the adjustable length. The mechanical arm comprises a first shell. A sliding groove is formed in the inner wall of the first shell. A connecting rod is movably connected in the sliding groove in a clamped manner. A through hole is formed in the surface of one end of the first shell. One end of the connecting rod penetrates the through hole in the surface of one end of the first shell, and a fixed plate is welded to the center axis of the surface of the other end of the connecting rod. Sliding grooves are formed in the surfaces of the two sides of the first shell. A sliding block is movably connected in each sliding groove in a clamped manner. The surface of one side of each sliding block is connected with a rotating rod through a rotary shaft,and the other end of each rotating rod is connected with a gripper through a rotary shaft. A first guide rod is welded to the center axis of the surface of one end of the connecting rod. Through the mechanical arm, the length of the mechanical arm can be easily changed by operation personnel, convenience and labor saving are achieved, and the work efficiency is improved; and the grabbing range ofthe grippers can be adjusted, the physical power labor intensity of labor personnel can be reduced, the operating cost of companies can be reduced, and the company profits can be improved.

The invention relates to a semi-automatic rail grinding machine comprising a steel rail fixing platform, a translation platform and a plurality of grinding assemblies. The steel rail fixing platform is arranged and horizontally fixed on a steel rail; the translation platform capable of horizontally moving is connected with the steel rail fixing platform via a sliding mechanism; a plurality of grinding assemblies are arranged on the translation platform; and grinding heads of the grinding assemblies pass through openings on the steel rail fixing platform and the translation platform to be respectively aligned to a plurality of to-be-grinded rail surfaces of the steel rail in a staggered way. All surfaces of welding parts of the well-paved seamless steel rail are grinded by the grinding assemblies installed in a staggered way; human labor intensity can be reduced due to the semi-automatic design, and work efficiency and economic benefits can be improved; the semi-automatic grinding machine is simply structured and has novel design and small equipment size; the grinding machine can be conveniently carried, thereby being easily promoted and used; and the semi-automatic rail grinding machine can work on the well-paved steel rail, so troubles of transportation and construction can be avoided and rail paving speed can be greatly improved.

The invention discloses an intelligent coal gangue activation device which comprises a box body, an automatic locking device and a controller. A pressure safety valve, a micro air compressor and a microwave generator are arranged on the box body, a microwave uniform distribution and diffusion pipe is arranged in the box body, and the micro air compressor is connected with the microwave uniform distribution and diffusion pipe. The upper side and the lower side of the microwave uniform distribution and diffusion pipe are provided with interval hollowed-out protection plates correspondingly, and the microwave uniform distribution and diffusion pipe and the interval hollowed-out protection plates are parallel to the bottom face of the box body. The microwave generator is connected with spiral wave guide tubes oppositely arranged on two sides in the box body, and is used for forming a rotary microwave field. The automatic locking device comprises an upper gangue gate, a lower gangue gate and a hydraulic oil cylinder, and the upper gangue gate and the lower gangue gate form a hinge connection mechanism with the box body through the hydraulic oil cylinder. The micro air compressor, the microwave generator and the automatic locking device are all connected with the controller. The device can achieve clean, safe and large-scale industrial application.

An air bag type telescopic fruit picking and collecting device comprises an air bag picking mechanism, an automatic telescopic mechanism, a universal labor saving mechanism, a buffering and collectingmechanism and a control mechanism, wherein the air bag picking mechanism comprises a picking head support, a rotary centrifugal cutter structure, an air bag, an air pipe, an air pump and an air pumprack; the automatic telescopic mechanism comprises a telescopic rod I, a telescopic rod II, a telescopic rod III, a telescopic platform, a stepping motor, a lower belt pulley, a synchronous belt, a press plate, a slider, an upper belt pulley and an upper belt pulley platform, and the top end is fixed at the bottom of the picking head support after the upper end of the telescopic rod I penetrates through the air pump rack; the universal labor saving mechanism comprises a spring I, a universal footed glass, an interface part and a hoop, and the telescopic rod III is fixed on a bottom plate through the universal footed glass at the bottom; the buffering and collecting mechanism comprises a buffering mechanism and a collecting mechanism. The telescopic fruit picking and collecting device picksoff fruits easily by skillfully using the holding action of the air bag and combining the centrifugal force action of blade rotation and sends the fruits to a collecting box through a pipeline laid with a buffering material.

The invention discloses an integrated assembly auxiliary device for a gas generator rotor. The integrated assembly auxiliary device comprises a base unit, a moving frame unit, a small handwheel unit,an assembly measuring unit and a large handwheel unit, wherein the base unit serves as an installation base for other units; the moving frame unit can move horizontally back and forth on the base unit; the small handwheel unit is fixedly arranged on the moving frame unit; a rotor to be assembled and measured is installed on the small handwheel unit; the small handwheel unit can rotate to adjust the direction of the rotor, so that the position of the rotor can be horizontally adjusted front and back and the rotor is rotated to a position in the adjusting direction; and the large handwheel unitcontrols the assembly measuring unit to move up and down on the base unit to adjust the up and down position, and the rotor is adjusted front and back and up and down through rotation or the positionof the assembly measuring unit is adjusted to enable the gas generator rotor to be matched with the assembly measuring unit and enable the gas generator rotor to be contact with the assembly measuringunit to perform assembly or run-out measurement operation, without manually moving the gas generator rotor for multiple times, which improves the assembly efficiency of the gas generator rotor.

The invention belongs to the technical field of baby strollers and particularly relates to a baby stroller going upstairs and downstairs conveniently. The baby stroller comprises a base. A sitting mechanism is arranged above the base. A lifting mechanism and a piston mechanism are fixedly connected to the upper end of the base. A first air guide pipe and a second air guide pipe are arranged between the lifting mechanism and the piston mechanism. The two ends of the first air guide pipe communicate with the lifting mechanism and the piston mechanism. The two ends of the second air guide pipe communicate with the lifting mechanism and the piston mechanism. The upper ends of the lifting mechanism and the piston mechanism are movably connected with the lower end of the sitting mechanism. The lower end of the lifting mechanism penetrates through the base and extends to the position below the base and is fixedly connected with a caterpillar band. Rolling wheels are fixedly installed at the lower end of the base. The baby stroller has the advantages that the baby stroller can go upstairs and downstairs conveniently, and the physical labor intensity of a parent can be reduced as well.

The invention relates to a centering device for tyre static balance detection, and a detection platform is disposed below the device. A cross beam is disposed above the device, and the device is characterized in that the device comprises a fixed apparatus, a transmission apparatus, and a pushing apparatus; The device can enable a tyre deflecting from a detection position to move to the detection position when the device carries out the static balance detection of the tyre, and a worker does not need to draw the tyre to move to the detection position through hands, thereby reducing the labor intensity of a detector, reducing the time in drawing the tyre, and improving the detection efficiency of the static balance detection of the tyre.

The invention discloses a use method of a molecular sieve combination in waste gas purification and a molecular sieve combination. The molecular sieve combination comprises a porous structure carrierand a plurality of molecular sieve material layers. The pore space of the molecular sieve combination endows the molecular sieve combination with a first specific surface area, and the use method includes: when the plurality of molecular sieve material layers attached to the porous structure carrier reach adsorption saturation, coating the surface of the molecular sieve combination with a new molecular sieve material layer, measuring a second specific surface area endowed by the pore space of the molecular sieve combination at the moment, further conducting purification adsorption on waste gas, and repeating the adsorption and coating steps, when the ratio of the second specific surface area to the first specific surface area reaches a preset value, stopping coating new molecular sieve material layer, and conducting molecular sieve desorption treatment. The invention also provides the molecular sieve combination used in the method. The method provided by the invention can greatly simplify the operation and save energy sources without affecting the adsorption capacity basically.

The invention discloses a supporting device for a grain belt conveyor, and relates to the technical field of agricultural machineries. The supporting device for the grain belt conveyor comprises a frame; a double-way screw rod is arranged in the frame; two ends of the double-way screw rod are respectively and rotatably connected to the inner side surfaces of one pair of opposite arms of the frame;adaptive screw nuts are respectively arranged on two threaded sections of the two-way screw rod in a sleeving manner; one surface of each of the two screw nuts is rotatably connected with a transmission plate; one end of one transmission plate is rotatably connected with the other end of the other transmission plate through a supporting plate; a positioning seat is rotatably mounted on the uppersurface of the supporting plate; each of one pair of opposite side surfaces of the supporting plate is at least rotatably connected with a locking lath; a locking hole is formed in one end part of each locking lath; the upper surfaces of the other pair of the opposite arms of the frame are both rotatably connected with side supporting plates; and one surface of each side supporting plate is plugged with a locking post which is matched with the locking hole in each locking lath. According to the supporting device for the grain belt conveyor, the supporting plates are driven to move upward or downward by utilizing a screw rod assembly and a transmission rod, which facilitates the mounting of a belt conveyor body, improves the work efficiency of a worker, and has great market popularization value.

The invention discloses an intermediate speed grinder, which has a simple structure and is rational in design. The intermediate speed grinder comprises a base and a middle seat arranged on the base, wherein the top of the middle seat is connected to a hopper; the bottom of the middle seat is connected with a lower hopper; the middle seat comprises a middle seat wall plate, a rolling shaft, cutter holders, movable cutters, fixed cutters and a motor; the motor is fixed on one side outside the middle seat wall plate; the rolling shaft is connected to a motor shaft of the motor; the rolling shaft is arranged in the middle seat wall plate; a plurality of movable cutter holders are sleeved at the periphery of the rolling shaft; the movable cutters are fixed on the movable cutter seats; the fixed cutters are arranged on two side walls in the middle seat wall plate; the movable cutters are tangent to the fixed cutters; a connecting rod is arranged at the bottom of a case and has an eccentric structure; and a screen is arranged between the connecting rod and the movable cutter seats. The intermediate speed grinder is low in cost, can grind materials thoroughly and is easy to clean, the labor intensity of operation workers is reduced, the working efficiency is effectively improved, and the service life is prolonged.

The invention relates to a plunger pump crankshaft grinding device and an application method, belongs to a plunger pump maintenance technology, and solves the problems in the prior art. The plunger pump crankshaft grinding device comprises a base, a driving motor, a transmission belt wheel, an abrasive paper wheel, a transmission belt and bolts, wherein the driving motor is fixed on the base; thetransmission belt wheel is mounted on the driving motor, and the transmission belt wheel is connected with the abrasive paper wheel by the transmission belt; the base is fixed on a crankshaft balanceblock by two bolts; the two bolts are connected to the outer side of the base, and are adjustable; the abrasive paper wheel comprises two 180-degree semicircular tiles; two pieces of abrasive paper are respectively mounted between the two semicircular tiles; and two edges of the abrasive paper are clamped by joint ports of the two semicircular tiles to fix the abrasive paper.

The invention discloses an elevator load testing machine and relates to the technical field of elevator detection. The problems that time and labor are wasted and labor cost is high when a load test is conducted on an elevator are solved. The elevator load testing machine is technically characterized in that the elevator load testing machine comprises a first water storage device, an electromagnetic valve, a water pipe, a flow meter, a water pump, a second water storage device and a microcomputer controller, the first water storage device, the electromagnetic valve, the flow meter, the water pump and the second water storage device are sequentially connected through the water pipe, and the electromagnetic valve, the flow meter and the water pump are connected with the microcomputer controller through leads; and water is accurately metered through a metering control device based on the single-chip microcomputer technology, the elevator load testing machine is equivalent to a traditionalstandard substance weight to be used for various load tests of the elevator, computer calculation control replaces manual calculation carrying, the problems of reworking and time consumption caused by errors generated in the weight carrying process are thoroughly solved, and high improvement of load test work efficiency and great reduction of physical labor intensity are achieved.

The invention relates to the field of reel material printing and coating production. According to the technical scheme, the winding drum material unwinding and winding printing tandem axle-free fixingunit comprises a base, a left wall plate, a right wall plate, a material rotating disc, a transposition power motor, a first left clamping machine head, a first right clamping machine head, a secondleft clamping machine head, a second right clamping machine head, a first gap bridge transmission mechanism and a second gap bridge transmission mechanism, wherein the left wall plate and the right wall plate are vertically fixed to the left side and the right side of the base, the two ends of the material rotating disc are rotationally positioned on the left wall plate and the right wall plate correspondingly, the transposition power motor drives the material rotating disc to rotate, the first left clamping machine head and the first right clamping machine head are coaxially installed on thematerial rotating disc at an interval so as to clamp an A-axis winding drum material, and the second left clamping machine head and the second right clamping machine head are coaxially installed on the material rotating disc at an interval so as to clamp a B-axis winding drum material. The unit can adapt to winding drum materials with different widths, manual shaft stringing is not needed, the labor intensity of workers is greatly relieved, the winding drum materials are driven to rotate through bilateral transmission, and the unit has the advantages of being reasonable in structure, reliablein work, convenient to operate, suitable for automatic application and high in production efficiency.