350results about How to "Avoid reverse rotation" patented technology

The invention provides a food processor locking mechanism which has the anti-loose function, guarantees reliable connection between components and prevents components from loosing. The food processor locking mechanism comprises a first structure part, a second structure part and a connection part, wherein the connection part is respectively in screw connection with the first structure part and the second structure part in a mode convenient to separate, and the first structure part and the connection part can form a first structure assembly. The food processor locking mechanism further comprises a locking block installed on the connection part, wherein the locking block comprises three work positions of an initial position, a first position and a second position. When the connection part is separated from the first structure part and the second structure part, the locking block is arranged at the initial position. When the first structure part and the connection part are in a screw connection state, the locking block leaves a support structure of the connection part to move to the first position to be matched with and fixedly connected with a location structure of the first structure part. When the first structure assembly and the second structure part are in a connection state, the locking block is positioned at the second position.

The invention relates to a support structure and a construction method of a cantilever plate for a house building project, and belongs to the field of cantilever plate construction. The support structure comprises wall-through screws and a bracing frame, the bracing frame comprises a carrying rack arranged horizontally and two fixed rods arranged vertically, the upper ends of the fixed rods are connected to the carrying rack, the side, far from the wall, of each fixed rod is vertically provided with a chute, the fixed rod is fixedly provided with ratchet bars at positions corresponding to thetwo sides of the chute, one end of each wall-through screw penetrates the chute, the fixed rod is provided with fixed plates corresponding to the ends, penetrating the chutes, of the wall-through screws, the side, far from the wall, of each fixed plate is in transmission connection with a nut which is in threaded connection with a screw, the circumference of the nut is fixedly connected with a ratchet ring, position, corresponding to the upper of the ratchet ring, of the fixed plate is in vertically sliding connection with a ratchet, and the side, close to the wall, of the fixed plate is provided with a ratchet plate whose tooth direction is opposite with that of the ratchet bar. The height of the support structure is convenient to adjust, and the bracing frame is firmly fixed to the wall.

The invention discloses a low-energy-consumption water surface garbage collector, and relates to the technical field of environmental protection equipment. The low-energy-consumption water surface garbage collector mainly solves the problem that garbage in a water channel floats on the water surface and is inconvenient to clear. The low-energy-consumption water surface garbage collector mainly comprises a water channel, wherein a clearing mechanism, a protection mechanism, a limiting mechanism, a garbage catching mechanism and a collecting mechanism are arranged in the water channel; water flows in the water channel to drive the garbage to move in the water channel; the garbage is intercepted by interception nets; the interception nets can be prevented from moving through pulleys on lifting columns; with the accumulation of the garbage, the flow speed of the water becomes slow, and the water level rises, so that floating blocks rise to avoid the interception nets, the interception netsrotate, and the garbage enters a catching box; and a water containing barrel is used for guiding the water into the catching box and causing the garbage to enter a collection box. The low-energy-consumption water surface garbage collector has the beneficial effects that the low-energy-consumption water surface garbage collector can automatically catch and collect garbage and is convenient for clearing the garbage in the water channel.

The invention discloses a pendulum wave energy power generation device, which is mainly used for generating power by utilization of ocean wave energy. The device mainly comprises a pushing plate 1, a sliding rod 2, a spring 3, a connecting rod group 4, a gearbox 5, a torsional spring power storage device 6, a speed changing box 7, a power generation set 8, a transmission shaft 9, a retaining wall 10, a floating diversion wall 11, a cylinder sliding sleeve 12, a ratchet wheel rotary shaft 13 and a lower pawl 23, wherein the floating diversion wall 11 pushes the pushing plate 1 to perform back-and-forth movement by means of collecting ocean waves; the ratchet wheel rotary shaft 13 rotates under the driving of the back-and-forth movement of the pushing plate 1 through the connecting rod group 4 and the gearbox 5; elastic potential energy is applied to the torsional spring power storage device 6 through the rotation of the ratchet wheel rotary shaft 13; the torsional spring power storage device 6 releases the elastic potential energy and applies a torsional force to the transmission shaft 9 of the power generation set 8 through the speed changing box 7, so that rotors of the power generation set 8 rotate for generating power. The pendulum wave energy power generation device disclosed by the invention has the advantages that the generated current is stable, and can be directly connected to a national power grid without complicated control equipment.

The invention relates to the technical field of medial apparatuses, in particular to a multi-position manipulative therapy bed. The bed comprises a main bed rack, a breast and back supporting part, abreast and back supporting part angle adjusting device, arm supporting parts and arm supporting part adjusting mechanisms, wherein each arm supporting part adjusting mechanism comprises a lead screw,a rotary knob, a lead screw, a guide pillar, a first connecting bracket, a second connecting bracket, a steel ball, a spring, a third connecting bracket, arm supporting part gas springs and the like.The invention also provides an application method of the multi-position manipulative therapy bed. Compared with the prior art, the multi-position manipulative therapy bed and the application method have the beneficial effects that multiple positions can be achieved and the positions can be adjusted and kept conveniently, and moreover, when the patients sit, the bed can provide support to the armsof a patient, so that the comfort level of the patient is improved, and the doctor can manipulate the patient more conveniently.

The invention provides an aviation hydraulic elevator, which comprises a bottom machine frame, the top of the bottom machine frame is supported by a scissor fork lift mechanism and provided with a topoperating platform; the scissor fork lift mechanism is provided with a hydraulic cylinder assembly for jacking the top operating platform; a cylinder mechanical lock mechanism for self-locking the hydraulic cylinder assembly is installed on the hydraulic cylinder assembly; the hydraulic cylinder assembly is connected with a hand pump structure and provides hydraulic power to drive the jacking action of the hydraulic cylinder assembly. The lift cylinder structure of the elevator adopts pure mechanical locking device; when an oil pipe suddenly bursts or the cylinder bottom suddenly falls off, the piston rod can be mechanically locked to avoid a sudden fall of the platform and cause a safety accident.

The invention discloses a self-clamping linkage clamp capable of preventing shaft rotation. The self-clamping linkage clamp capable of preventing shaft rotation comprises a front clamping mechanism used for clamping a shaft and a rear clamping mechanism used for clamping a fixing piece installed on the shaft in a screwed mode. A connecting mechanism is arranged between the front clamping mechanism and the rear clamping mechanism, and the front clamping mechanism and the rear clamping mechanism are connected and can rotate relatively in one direction through the connecting mechanism. The connecting mechanism can stretch in the axial direction, and the maximum stretching distance of the connecting mechanism is larger than the axial length of the fixing piece. According to the self-clamping linkage clamp capable of preventing shaft rotation, through the arrangement of the front clamping mechanism, the rear clamping mechanism and the connecting mechanism, the purpose of preventing the shaft from rotating when the fixing piece on the shaft is dismounted is achieved, oil leakage and even falling of internal connecting lines caused by shaft rotation are prevented, and using is convenient. After dismounting is completed, a handle is rotated so as to rotate a stop lever out of a clamping groove, an auxiliary handle rebounds automatically under the action of a return spring, the clamped piece is loosened, and thus the clamp can be dismounted from the shaft, and operation is easy and convenient.

The invention discloses an air conditioner connecting pipe assembly and an air conditioner. The air conditioner connecting pipe assembly comprises an indoor unit connecting pipe, an outdoor unit connecting pipe, a pipe connector, a turn-connecting nut and an operating piece. One end of the pipe connector is fixedly connected with the indoor unit connecting pipe. The outdoor unit connecting pipe is provided with a connector end arranged in the turn-connecting nut in a sleeved manner. The pipe connector is connected to the turn-connecting nut in a threaded connection manner to be in butt joint with the indoor unit connecting pipe and the outdoor unit connecting pipe. The air conditioner connecting pipe assembly is characterized in that a first transmission thread and a first flange are arranged on the turn-connecting nut; an operating piece is provided with a second transmission thread screwed together with the first transmission thread, and an end face connected with the first flange in an abutting manner; and the operating piece can drive the turn-connecting nut to be screwed together with the pipe connector in the forward rotating process, and the operating piece is unscrewed from the turn-connecting nut in the reverse rotating process. Connection of the outdoor side connecting pipe of the air conditioner connecting pipe assembly has the function of preventing mistaken detachment.

The invention discloses a universal detection device of an engine valve lift, which comprises a dial indicator, a fixed frame, a connecting plate, a speed reducing mechanism, a first angle dial and a second angle dial, wherein the fixed frame is fixedly connected with the speed reducing mechanism, the speed reducing mechanism is fixedly connected with the connecting plate, the first angle dial is arranged on the output shaft of the speed reducing mechanism, and the dial indicator is fixedly connected with the second angle dial. The universal detection device can be used as fixed equipment for long-term use and can ensure the precision since references are relatively fixed; the references of all the parts of the device are unified, the errors are fixed, the precision is within an acceptable range, and a relative error limit can be computed through absolute errors; the axial line of the dial indicator and the axial line of a valve rod are easily adjusted to be collinear, and the valve stroke can be truly reflected through measured numerical values; through the two-stage speed reducing mechanism, the rotating speed of the output shaft can be decreased, the torque of an input shaft is reduced, the operation is quite easy, and particularly a unidirectional clutch prevents the input shaft from reversely rotating and further ensures the rotating accuracy of the input shaft; and the device has strong adaptability.

The invention discloses a clamping head set in a transmission shaft driven by a power supply, comprising a body, a plurality of clamping jaws and a rear cover, a jacket rotatably covered outside of the body, and disposed in front of the rear cover, as well as a driving nut. The invention is characterized in that it also comprises: a drive pendulum support cover disposed between the jacket and the driving nut, connected with the jacket, and cover ed on the body; a drive pendulum arranged on the drive pendulum support cover and swinging between a first position and a second position around a pivot axis thereof includes a first and second drive parts. While the drive pendulum is in the first position, the nut is driven along a first transmission path by the first drive part; and when the drive pendulum is in the second position, the driving nut is driven by the second drive part along a second transmission path which has larger clamping force than the first transmission path. The invention can provide with larger clamping force, with simple structure and convenient control.

The invention discloses an electromagnet opening device for a safe deposit box or a safe box. The electromagnet opening device for the safe deposit box or the safe box comprises a shell, a fixed iron core, a movable iron core, an electromagnetic coil, a shifting piece and a closing spring are arranged in the shell, the bottom end of the movable iron core is matched with the fixed iron core, the top end of the movable iron core is sleeved with a shaft sleeve, and the shaft sleeve extends to the outside of the shell through a through hole in the shell. The electromagnet opening device for the safe deposit box or the safe box is characterized in that a vibration sensing mechanism is further arranged in the shell and comprises an induction block and a balancing spring, the induction block is provided with a blocking end and a balancing end, the blocking end and the balancing end are located on the two sides of the movable iron core respectively, the balancing spring is arranged between the bottom of the balancing end and the shell, the bottom of the blocking end is in transmission connection with the shell through a rotating shaft, and when the induction block compresses the balancing spring through the rotation of the rotating shaft, the blocking end abuts against the bottom face of the shaft sleeve. According to the electromagnet opening device for the safe deposit box or the safe box, mistaken shrinkage of the movable iron core is prevented by adding the vibration sensing mechanism, and the situation that the safe box(the safe deposit box) is opened abnormally is prevented effectively.

The present invention provides an effective technology for successfully carrying out the driving work for the driving work tool executing driving work of driving work piece for the material to be processed. A plug-in bolt-firing tool of the driving work tool of the present invention is so configured that: for the stop position of the driving motor, the front end(171a)of the cam block(171)is leaned against the resisting face(178d)of the cam plate(177), the converse rotating of the ratchet(116)to the arrowhead(12)direction is allowed when the cam plate(177)is blocked at the await orders position of the driving work, thereby the converse rotating of the cam plate(177)to the arrowhead(32)direction by specified amount is allowed, and a gap(179)is formed between the front end part(171a)of the cam block(171)and the resisting face(178d)of the cam plate(177).

The invention provides an anti-disassembly lamp holder. Wherein, arranging a opening on side of said joint with space, arranging a block in said space to prevent reverse rotation of joint by rotating and getting in said opening without effect to holder rotation when screw-plugging the joint forwardly into the screw-type lamp holder and preventing the reverse rotation of joint when inverse screw-plugging out. This invention can prevent stealing and missing by userself, can let user once used energy-saving bulb hard to use common bulb next time, thereby, benefit to individual and whole society both in economy and environment.

The invention discloses a vehicle-mounted mobile phone placing rack capable of being fixed firmly. The vehicle-mounted mobile phone placing rack comprises a support plate, wherein one side of the support plate is provided with a placing groove, and the inner part of the support plate is provided with a containing cavity; an extrusion block is movably mounted at the groove bottom of the placing groove; one end of the extrusion block penetrates through the support plate and extends to the inner part of the containing cavity and is fixedly connected with one side of a pressure plate; and one side of the pressure plate is fixedly connected with one end of a spring. By arranging the placing groove, when a mobile phone is put in the placing groove, the extrusion block moves to the inner part of the containing cavity, and then the pressure plate is matched with a pressure rod to extrude a first piston, so that the first piston moves; when the first piston moves, the liquid in a hydraulic box is extruded, so that the liquid pushes a second piston and a push rod to move; when the push rod moves, a rotating rod is driven to rotate; and when the rotating rod rotates, a clamping plate is pressed on the surface of the mobile phone, thereby achieving the effects of quickly placing and clamping the mobile phone.

The invention discloses a filter membrane clamping device with self-locking and damping functions. The filter membrane clamping device comprises a fixed seat and an air inlet seat, a suction nozzle isconnected at the lower end of the fixed seat, a lower sealing ring is arranged on the upper surface of the fixed seat, a buffer groove is formed in the upper surface of the fixed seat, the inner bottom surface of the buffer groove is connected with a limit seat through a fourth compression spring, an upper sealing ring is arranged on the lower surface of the air inlet seat, a filter membrane is mounted between the upper sealing ring and the lower sealing ring, and mounting blocks, bearings and adjusting blocks are connected on the left side and the right side of the fixed seat and sequentially distributed on the left side and the right side of the fixed seat from bottom to top. The filter membrane clamping device has self-locking and damping functions, the speed of the upper sealing ringcan approach to zero when the upper sealing contacts with the filter membrane, so that vibration can be furthest reduced when the clamping device replaces the filter membrane, and air quality and pollution sources of pollution gas are accurately evaluated.

The invention discloses a stripping device for cable wiring, which is characterized in that one side of a mounting plate is provided with a fixed shaft, the fixed shaft is provided with a cutting knife, and one side of the cutting knife is provided with a rotating wheel cooperating with the cutting knife; a plurality of blocking rods are arranged on one side of the cutting knife, and shifting rodscorresponding to the blocking rods are arranged on one side of the rotating wheel; a first sliding block is arranged on one side of the supporting table, an L-shaped clamping block is movably connected to the upper portion of the first sliding block through a sliding block, a cylindrical cam is connected to one side of a second motor, a swing arm is arranged on the lower portion of the cylindrical cam, a sector gear is connected to the lower end of the swing arm, and a rack meshed with the sector gear is arranged on the lower portion of the clamping block; and a hydraulic cylinder is arrangedon one side of the third connecting rod. According to the invention, the cutting knife is arranged in the shell, the first sliding block and the clamping block are arranged on one side of the cuttingknife, a cable is inserted into the shell through a cable stripping hole, a cable sheath is cut off under the cutting action of the cutting knife, then the cut cable sheath is pulled out under the action of the clamping block and the first sliding block, and the stability and uniformity of cable stripping are guaranteed.

The invention relates to 'an anti-calking feed chute for a refuse transfer station', and belongs to the field of environment-friendly equipment. The anti-calking feed chute for the refuse transfer station comprises a chute body, and is characterized in that a window structure which is opened towards the inside of the chute body and a transmission device which is connected with the window structure are arranged on a side plate of the chute body. Under the action of the transmission device, the window structure is opened towards the inside of the chute body, so that calking of materials in the chuck body is eliminated. The anti-calking feed chute for the refuse transfer station slightly modifies the prior feed chute according to the structure of the feed chute, and well solves the calking problem generated by material stacking in the feed chute.

The invention discloses a variable rope tethered double cylinder winch hoisting system and a transformation method for tethering rope. The variable rope tethered double cylinder winch hoisting system comprises a crown block frame installed on the top of a derrick, runner wagons groups with travelling block and winch are made up of several runner wagons with single pulley, steel wire rope and double drum winch. A head block assembly and a leading pulley are installed on the up of the crown block frame, and the bottom of the crown block frame is provided with an upper locking device. The underneath locking device is installed on the inner of the runner wagon with single pulley. Runner wagons with single pulley of the runner wagons groups with travelling block are paired to symmetry from the inside out and disengaged with the support of the runner wagon, and are fixed on the bottom of the underneath locking device,thereby forming a fixed pulley. And the outermost of two runner wagons with single pulley are always fixed on the support of the runner wagon to be travelling block, thereby the transformation of 12-rope tethered, 8-rope tethered and 4-rope tethered system of lifting system can be realized. The variable rope tethered double cylinder winch hoisting system and transformation method for tethering rope have the advantages that the structure is designed to be science and practical, the transformation of the rope tethered of the lifting system can be automatically realized, the working efficiency and equipment redundancy are improved, time and effort are saved, the center of gravity of the drilling equipment is reduced and the stability of the derrick of the well drilling is improved.

The invention discloses a medical cardiothoracic surgery nursing thorax pipeline fixing support, relates to the field of medical instruments and aims to solve the problem of secondary injury caused bypain aggravation of a patient due to the fact that existing thorax drainage pipelines are prone to tearing a wound of the patient because of reasons like gravity. The support comprises a base, a vertical supporting pipe is fixedly mounted on the base and connected with a supporting screw through an internal thread, a through hole is formed in the upper portion of the supporting screw, the top endof the supporting screw is rotatably connected with a guide rod, a C-shaped adjusting rod is fixedly mounted on the lower side wall of the left end of the guide rod, a connection passage is arrangedon the undersurface of the through hole, a connection rod is slidably connected in the connection passage, a supporting block is mounted at the upper end of the connection rod, and a ratchet stoppingdevice is mounted on the upper surface of the supporting block. When the support is in use, height and angle of the guide rod can be adjusted according to actual using needs; the support is convenientand quick in operation and safe to use, and discomfort of the patient is relieved.

The invention relates to communication engineering equipment, in particular to a roller type communication engineering cable collecting device. The cable collecting device comprises a cable winding mechanism, a damping mechanism and a travel mechanism. An anti-slip mechanism arranged on the device prevents a roller from reversely rotating when cables are sorted; a lifting mechanism arranged on thedevice can be adjusted according to the quantity of the cables; in the process of transportation and cable collection, the device is provided with the good damping mechanism; the device is further provided with the telescopic travel mechanism to facilitate movement of the device, and stable placement of the device is also facilitated. The cable winding mechanism is connected with the damping mechanism through welding and the damping mechanism is connected with the travel mechanism through welding.

Disclosed is a liquid applicator vessel, the cost of which is reduced while maintaining the same impression from use as current products by decreasing the number of parts while maintaining the quality demanded from a rotary applicator vessel, and enabling assembly using a simple method. In the liquid applicator vessel, sealing sections (18a, 18a) formed on the outer circumference of the front section of a piston (18) make sliding contact with the inner wall of an enclosed section (12) of a main shaft (10), and additionally a tubular portion (18b) is formed having a female screw section (38) on the inner circumference and a pair of protrusions (36) configured from rib-shaped protrusions protruding radially outward from the outer circumference of the back section of the piston (18). A male screw section (40) which is threaded with the female screw section (38) of the aforementioned tubular portion (18b) is formed on the outer circumferential surface of the front section extending forward from the operating section (16a) of a rotating body (16). The space of the enclosed section (12) is formed towards the front of the aforementioned main shaft (10), and towards the back, grooves (42) which engage the protrusions (36) of the aforementioned tubular portion (18b) are formed along the axial direction.

The invention relates to an air cooled structure permanent magnetic full-electric drive roller. A hollow shaft is fixedly connected with a stator through a taper-lock. A winding coil cable on the stator is connected with a junction box on the end portion of the hollow shaft through a center hole in the hollow shaft. The two ends of the hollow shaft are provided with a connection disk I and a connection disk II through bearings. A permanent magnetic rotor is located on the outer circumference of the stator and connected with the connection disk II through a bolt. A roller body is connected withthe connection disk I and the connection disk II through bolts. A cavity formed among the roller body, the connection disk I and the connection disk II is internally provided with an air cooled heatdissipation system. The air cooled structure permanent magnetic full-electric drive roller adopts a permanent magnetic full-electric drive roller structure, a mechanical gear reducer is removed, the transmission efficiency is improved, and the energy consumption is reduced.

The invention discloses a wall-hanging type charging pile device, and belongs to the technical field of charging piles. The wall-hanging type charging pile device comprises a shell arranged on a wall,an anti-collision mechanism is arranged on the wall and is connected with the shell and used for preventing collision, a cable telescopic mechanism is arranged on one side, close to the wall, of theinner cavity of the shell and is used for receiving and releasing the cable and a limiting mechanism is arranged on one side, deviating from the wall, of the inner cavity of the shell and is used forlimiting the movement of the cable, and the cable telescopic mechanism is movably connected with the limiting mechanism, the anti-collision mechanism can prevent the child from colliding with the charging pile by the aid of the anti-collision mechanism, the charging cables can be contracted and extended through the cable telescopic mechanism and the limiting mechanism, redundant charging cables can be prevented from being retained outside, and the risk that pedestrians are tripped by the charging cables is reduced.

The invention relates to a bicycle vibration energy conversion mechanism and a bicycle adopting the same. The bicycle vibration energy conversion mechanism comprises a force transfer mechanism and a shell used for being arranged on a fixed frame of the bicycle, wherein one end of the force transfer mechanism is in transmission connection with a swing frame, capable of vertically swinging, of the bicycle; the other end of the force transfer mechanism is in transmission connection with a swing arm which is rotatably matched with the inner wall of the shell and is suitable for the swing arm to carry out reciprocating swinging; an arc-shaped surface tooth at the lower end of the swing arm is in transmission connection with an input gear which is located on the lower part and is rotatably matched with a fixed shaft; the input gear is in transmission connection with the inner end of a clockwork spring at the rear side by a ratchet wheel mechanism; the outer end of the clockwork spring is in transmission connection with a driven gear on a rotating shaft in a matching way by utilizing a bearing and a one-way clutch provided with gear teeth on the outer side face; the driven gear is suitable for being in transmission connection with the rotating shaft; and the end part, stretching out of the shell, on the rotating shaft is suitable for being fixedly connected with a chain wheel used for driving a driving wheel of the bicycle. The bicycle vibration energy conversion mechanism is capable of accumulating vibration energy and then outputting the vibration energy to wheels so as to drive the bicycle to advance.

The invention relates to a rapid pile pulling device. The rapid pile pulling device comprises a supporting frame erected on the ground and a take-up device arranged at the upper end of the supportingframe. The take-up device comprises a take-up frame, a rotating shaft and a chain rope; the upper end of the take-up frame is detachably fixed to the supporting frame through a connecting piece; the rotating shaft is transversely and rotationally arranged on the take-up frame, and one end of the rotating shaft penetrates out of the side wall of the take-up frame; one end of the chain rope is woundand fixed on the rotating shaft in the take-up frame, and the other end of the chain rope penetrates out of the lower end of the take-up frame and is fastened to a stay wire pile; a driving mechanismused for driving the rotating shaft to rotate is fixed to the rotating shaft on the outer side of the take-up frame, the chain rope is shortened through rotation of the rotating shaft, so that the supporting frame is stably erected on the ground, and the stay wire pile is rapidly pulled out of the ground. The rapid pile pulling device and the pile pulling method thereof are high in applicabilityand pile pulling efficiency, the pile pulling work can be completed by one person, and the labor input cost is saved.

An open ended container with locking lid can provide a number of features. The lid and the container have cooperating threads. The lid has also has a locking mechanism connected to the lid, such as from a downwardly extending wall. The container has a stop, in some embodiments accessible from above, such as with downwardly and possibly linearly biased engagement members of the locking mechanism. In fact, some embodiments have a stop as a portion of satellite ring.

The invention discloses a portable display device based on the Internet of things (IoT). The portable display device has a structure comprising a projector, an IoT receiver, a handle, a power connection protection cover, a carrying body, electric push rods and a support plate. The carrying body is a rectangular parallelepiped, four corners of the bottom end are inlaid and locked with electric pushrods and are electrically connected with the electric push rods, and the top end is fastened with the projector and is electrically connected with the projector. The number of the electric push rodsis 4, and the bottom ends are locked with the support plate. The IoT receiver is inlaid and glued to the upper side in the middle of the front end of the carrying body, and is electrically connected with the carrying body. The left and right sides of the handle are inlaid and locked with the carrying body. Gears, drawstrings, ejectors, springs and other mechanisms which are provided by the devicecan be used when the device is used, the device can be charged and carried when the device is in use, since the support rods and the projector for display can be retracted, the device is more convenient to carry, and the device is capable of adjustment of rotation and vertical angle and of anti-reverse locking, ensures the stable adjustment, and is easy to use.

The invention provides a pipeline stabilizing and supporting mechanism for building machinery construction. The pipeline stabilizing and supporting mechanism comprises a balance weight base, wherein abase platform is clamped to the top of the balance weight base, and a pipeline sliding clamp is slidably connected into the top end face of the base platform; the front side end face of the base platform is rotationally connected with a driving mechanism, and the rear end of the driving mechanism is connected with a two-way lead screw; a rotating handle is rotatably connected to the side wall ofthe pipeline sliding clamp, and a pipeline locking hoop is embedded in the arc-shaped inner wall of the pipeline sliding clamp; and an elastic lock pin is mounted on the side face of a vertical arm ofthe rotating handle. According to the mechanism, the rotating handle is rotated to drive a screw rod to rotate, the length of the part, in a translation block, of the screw rod is changed, the pipeline locking hoop is made to perform translation motion, a fixed pipeline in the pipeline sliding clamp is reinforced, the pipeline is prevented from sliding, meanwhile, vibration of the pipeline is reduced, and stability of pipeline fixing is guaranteed.