41results about How to "Sliding limit" patented technology

The invention discloses a medical treatment medicinal material dendrobium officinale picking machine which comprises a fixed machine body. A first rotating chamber is disposed in the fixed machine body, a first rotating shaft rotating in the fixed machine body is disposed in the first rotating chamber, the first rotating shaft is provided with a pull rope rotating wheel provided with a pull rope,a second sliding hole is also formed in the fixed machine body, the two sides of the second sliding hole are provided with a row of first sliding blocks sliding in the fixed machine body respectively,each first sliding block is provided with a rotating second supporting rotating wheel, a row of fixing teeth connected to the fixed machine body is disposed between the rotating second supporting rotating wheels on the two sides, the end of the pull rope is connected with a lifting fence, the lifting fence can be driven to lift through the sliding of the pull rope, the sliding of the pull rope can be supported through the second supporting rotating wheels, the pull rope is locked and fixed through the fixing teeth, and thus the problem of dropping can be prevented.

The invention discloses a device for preventing a cable from sliding. The device comprises a box body, wherein a fixed block is fixedly connected with an internal bottom part of the box body, an adjustment rod is hinged with an outer surface of the fixed block, a top end of the adjustment rod is fixedly connected with a clamping sleeve, an anti-slip cushion is fixedly connected with an inner sideof the clamping sleeve, a first limitation block is arranged at a left side of the adjustment rod, and a right side of the first limitation block is fixedly connected with a buffer spring. By arranging the adjustment rod, a first pull rod and a second pull rod, the adjustment rod is extruded downwards and driven to deflect leftwards when the cable slides, a first support rod is pulled to upwards extrude the cable along a first fixed rod by the first pull rod, the second pull rod is pulled to downwards extrude the cable by the second pull rod when the first pull rod leftwards inclines, the cable is jointly clamped by the second support rod and the first support rod and is limited to slide, and the reciprocating motion of the first pull rod is helped to be supported and buffered by verticaladjustment of an adjustment spring and a buffer rod and inclination of a support plate.

The invention relates to a movable extending-and-contracting control method for an electrical equipment support in an underground comprehensive pipe gallery. The electrical equipment support is arranged in the underground comprehensive pipe gallery so that a fixing rod can move in a horizontal sliding rail along with walking wheels or can be located and stops moving; and the height of the equipment is adjusted by adjusting the distance between the portion, inserted into a front rod, of any level of extending-and-contracting rod behind the fixing rod and the front rod; a sector-shaped fixing pin is inserted into a sector-shaped pin hole aligned with the sector-shaped fixing pin in the radial direction to connect every two adjacent rods, and loosening and falling of the sector-shaped fixing pins are limited doubly through hasps and locking sleeves; and within the extending-and-contracting length range of locking sleeve extending-and-contracting joints, covering of the sector-shaped pin holes in the all the levels of connected rods, exposure of the fixing pins and hiding of two stations can be achieved. According to the movable extending-and-contracting control method, all the levels of rods serve as cable penetrating pipes for input and output of cables of the electrical equipment, a cable winding frame is arranged on the sliding rail, and the cable supporting function and the cable winding, unwinding, extending and contracting functions are achieved. According to the movable extending-and-contracting control method, the height and plane position can be adjusted through longitudinal extending and contracting and translation, and the method is especially suitable for electrical equipment mounting under the condition that the space is narrow or the operation position needs to be changed frequently.

The invention provides a double-hoisting-point fixed winch. The double-hoisting-point fixed winch comprises a rack, a driving mechanism and winding mechanisms; the driving mechanism, the winding mechanisms, braking mechanisms and a mounting mechanism are installed on the rack separately; and the driving mechanism is in transmission connection with the winding mechanisms and used for driving the winding mechanisms so that the winding mechanisms can rotate around their central axes for winding and / or releasing traction ropes. The double-hoisting-point fixed winch further comprises the braking mechanisms and the mounting mechanism; and each braking mechanism comprises a first brake disc and a second brake disc, wherein the side, close to the second brake disc, of the first brake disc is provided with a convex block, and one side of the second brake disc is fixedly connected with one end of the corresponding winding mechanism. According to the double-hoisting-point fixed winch, the first brake disc is provided with the convex block, the second brake disc is provided with an annular groove, when the surfaces of the first brake disc and the second brake disc are attached, the convex block and the annular groove are also attached, the friction contact area of the first brake disc and the second brake disc is increased, and the braking effect is improved.

The invention provides a double-hanging fixed winch, which includes a frame, a driving mechanism, and a winding mechanism; the driving mechanism, winding mechanism, braking mechanism and installation mechanism are respectively installed on the frame; the driving mechanism It is in transmission connection with the winding mechanism, and the driving mechanism is used to drive the winding mechanism so that the winding mechanism can rotate around its own central axis for winding and / or releasing the traction rope; it also includes a braking mechanism and Installation mechanism; the brake mechanism includes a first brake disc and a second brake disc; a bump is provided on the side of the first brake disc close to the second brake disc; one side of the second brake disc is connected to the second brake disc One end of the winding mechanism is fixedly connected. In the present invention, a protrusion is provided on the first brake disc, and an annular groove is provided on the second brake disc. When the surfaces of the first brake disc and the second brake disc are attached, the protrusion and the annular groove are also attached. The friction contact area between the two is increased, and the braking effect is increased.

The invention relates to the technical field of aviation airborne equipment, and discloses an anti-static searchlighting device for aviation airborne equipment maintenance. The anti-static searchlighting device comprises two glasses frames, and the two glasses frames are fixedly connected through a spring seat; connecting plates are fixedly mounted on the opposite sides of the two glasses frames;a nose bridge plate positioned at the bottom of the spring seat is fixedly mounted between the two connecting plates; connecting rods are fixedly mounted in the two glasses frames, inner frames are fixedly mounted at the ends, away from the glasses frames, of the connecting rods, lenses are fixedly mounted in the two inner frames, and dustproof cloth fixedly connected with the connecting rods is fixedly mounted in the two glasses frames. The anti-static searchlighting device for aviation airborne equipment maintenance has the advantages of being wearable and the like, and the problems that inthe actual airborne equipment maintenance process, a machine shell is directly opened for maintenance, the device needs to be held by hand, great trouble is caused, and hand operation of workers is hindered are solved.

The invention provides a retractor for clinical surgery. The retractor for surgical clinical operations includes a Y-shaped frame, a push assembly and an injection mechanism, and retractors are installed on both sides of the Y-shaped frame, and the retracted parts include a curved rod and a traction hook. One end of the rod is inserted into the installation groove opened at the connecting end of the Y-shaped frame and connected by the pin shaft rotation, and the bottom of the other end of the curved rod is fixedly fitted with several traction hooks distributed equidistantly. The surface is provided with an excessive arc surface, the pushing assembly for adjusting the distance between the two groups of retractors is installed on the Y-shaped frame, and the injection mechanism for sterilizing the patient's affected part is installed on the Y-shaped frame. The retractor device for clinical surgery provided by the present invention presses the pressure plate so that the liquid medicine in the injection cylinder is discharged into the liquid discharge nozzle through the hose, and the liquid medicine is discharged from the liquid discharge nozzle, and the liquid medicine rolls down with the traction hook. On the one hand, the traction hook is just sterilized, and on the other hand, the safety of the patient's retracted wound is improved.

The invention discloses a method for eliminating water hammer in a mine drainage pipeline, which includes the following steps: S1: install the pipe body on both sides of the pipeline valve through flanges or at the water outlet of the water pump, when the valve is closed or opened When the valve is closed, fluid pressure is formed in the pipeline; S2: while the valve is being opened or closed, the solenoid valve is used to control the servo motor to drive the rotating plate to rotate, so that the rotating plate and the piston ring are on the same plane, forming an effective water flow. Blocking; S3: Eliminate the positive fluid pressure by setting the elastic component to cooperate with the piston ring to form a buffer force; S4: By setting the buffer component and the movable plate on the side wall of the pipe body to offset the force of the water hammer on the side wall of the pipe body and reduce the fluid pressure impact force; through the joint action of the elastic component and the buffer component, the reaction force is repeatedly formed against the water hammer, eliminating the water hammer, reducing the damage of the water hammer to the mine pipe body and valves, ensuring normal production, and increasing the output of the mine pipeline. water safety.

The invention discloses a cable-direction-following ROV winch applied to a non-power-locating mother ship. The cable-direction-following ROV winch comprises the non-power-locating mother ship, an A-shaped frame, a winch cable-winding-unwinding idler wheel and an underwater robot, wherein the A-shaped frame, the winch cable-winding-unwinding idler wheel and the underwater robot are arranged on thenon-power-locating mother ship. A pulley is rotationally connected onto the A-shaped frame, an umbilical cable is connected to the underwater robot and wound around the pulley to be connected with thewinch cable-winding-unwinding idler wheel, and a positioning piece for guiding the umbilical cable is further arranged on the non-power-locating mother ship; a connecting rod is arranged on the A-shaped frame; the pulley comprises a sliding part and a rotating part, the sliding part is annular, is arranged on the connecting rod and slides in the direction of the connecting rod, and a strip-shapedgroove is formed in the connecting rod; protruding blocks protrude on the sliding part, and the rotating part is rotationally connected at the outer ring of the sliding part. According to the cable-direction-following ROV winch, as the pulley is designed to freely slide on the A-shaped frame, the risks that as the ship rotates, the working efficiency of the underwater robot is affected, and meanwhile as the umbilical cable is broken, the underwater robot is lost can be lowered.

The invention provides a urinal structure of a hospital public washroom. The urinal structure comprises an urine receiving drum, a water spraying frame, spraying nozzles and a shaft sleeve, wherein the rotary rack is integrally designed as a u-shaped structure; an inserting ring and a shaft sleeve are welded at the ends of a left bent supporting rod and a right bent supporting rod, and a pulling handle is welded and supported at the top end of a transverse supporting rod; a round urine outlet is formed in a base plate of a square urine groove at the bottom of a urinal main body in an insertingmode; a urine collecting funnel is arranged at the bottom of the round urine outlet in a communicating mode, and a filter screen rack is additionally inserted and supported in the round urine outlet;a drainage pipe is hung on the urine collecting funnel at the bottom of the square urine groove in a communicating mode; and the drainage pipe is arranged in a posture of vertically supporting downwards. The water spraying rack is arranged, and by virtue of the plurality of spraying nozzles which are locked on the water spraying rack by virtue of screw threads, the rotary frame and the urine receiving drum can be sprayed and cleaned, so that remaining urine on the rotary frame and in the urine receiving drum can be flushed away, and influence to the accuracy of urine detection in the case that the remaining urine is mixed with a newly taken urine sample can be avoided.

The invention discloses a unidirectional-drive power device of an electric motorcycle, and relates to a unidirectional drive device that is characterized by utilizing meshing gears. As an internal meshing ratchet drive component is arranged in a reduction gear, a pawl plate on an output shaft is in an idling state in an internal ratchet and cannot be driven to rotate by the internal ratchet when the wheel speed is higher than the revolution speed of the output shaft; accordingly, passive rotation of a motor rotor is avoided. Besides, since no groove is arranged in the middle of a pawl, the structural strength of the pawl is improved greatly, cracking and breaking of the pawl in the process of high-load transmission are prevented, and improvement of the structural strength of the pawl is guaranteed further on the premise of no size increase.

The invention provides a urinal structure of a hospital public washroom. The urinal structure comprises an urine receiving drum, a water spraying frame, spraying nozzles and a shaft sleeve, wherein the rotary rack is integrally designed as a u-shaped structure; an inserting ring and a shaft sleeve are welded at the ends of a left bent supporting rod and a right bent supporting rod, and a pulling handle is welded and supported at the top end of a transverse supporting rod; a round urine outlet is formed in a base plate of a square urine groove at the bottom of a urinal main body in an insertingmode; a urine collecting funnel is arranged at the bottom of the round urine outlet in a communicating mode, and a filter screen rack is additionally inserted and supported in the round urine outlet;a drainage pipe is hung on the urine collecting funnel at the bottom of the square urine groove in a communicating mode; and the drainage pipe is arranged in a posture of vertically supporting downwards. The water spraying rack is arranged, and by virtue of the plurality of spraying nozzles which are locked on the water spraying rack by virtue of screw threads, the rotary frame and the urine receiving drum can be sprayed and cleaned, so that remaining urine on the rotary frame and in the urine receiving drum can be flushed away, and influence to the accuracy of urine detection in the case that the remaining urine is mixed with a newly taken urine sample can be avoided.

The invention discloses an operation platform in an elevator shaft, and relates to the field of elevator construction devices.The operation platform comprises a platform body and a supporting frame used for supporting the platform body, the platform body comprises a mounting base mounted on the supporting frame and a supporting plate arranged on the upper end face of the mounting base, and at least one cleaning hole is formed in the upper end face of the supporting plate; a mounting groove is formed in the upper end face of the mounting base, mounting columns used for sealing the cleaning holes are arranged on the bottom wall of the mounting groove, the number of the mounting columns is the same as that of the cleaning holes, lifting pieces used for driving the supporting plate to ascend and descend are arranged on the bottom wall of the mounting groove, and a collecting piece used for collecting sundries is arranged on the upper end face of the supporting plate. When the sundries are cleaned, the sundries on the supporting plate are collected through the material collecting piece, then the supporting plate is lifted through the lifting piece, so that the mounting column is separated from the cleaning hole, the sundries are pushed into the cleaning hole, and the sundries fall into the mounting groove through the cleaning hole, the supporting plate is kept clean and tidy, and the personal safety of constructors during construction on the supporting plate is ensured.

The invention relates to a movable and telescopic electrical equipment support. A telescopic mechanism is arranged to be connected with electrical equipment and a horizontal movement mechanism, and a fixed rod moves or is located and stopped in a horizontal sliding rail along with walking wheels. The height position of the electrical equipment is adjusted by adjusting the distance of any grade of telescopic rod behind the fixed rod inserted into a previous rod. Fan-shaped fixing pins are inserted into fan-shaped pin holes aligned in the radial direction to achieve connection between every two adjacent rods, and loosening and falling of the fan-shaped fixing pins are dually limited by hasps and locking sleeves. The telescopic length range of locking sleeve telescopic joints can cover the exposed fan-shaped pin holes and fixing pins on all grades of connected rods and hide two stations. All grades of rods of the support are also used as cable penetrating pipes of electrical equipment inlet and outlet cables, and a cable winding frame is arranged on the sliding rail to achieve the cable supporting function and the cable take-up, pay-off and telescopic functions. The height position and plane position can be adjusted through longitudinal stretching out and drawing back and horizontal movement, and the support is especially suitable for mounting of the electrical equipment with narrow space or with operation positions needing to be frequently changed.

The invention provides a plug locking mechanism of a transfer box. The plug locking mechanism comprises a push rod, a sleeve and a locking sleeve, wherein the locking sleeve comprises a conical sleevepart, a shaft sleeve part and a limiting part which are sequentially connected from left to right; the shaft sleeve part is arranged between the periphery of the push rod and the inner wall of the sleeve in a sliding manner; the conical sleeve part is located on the side, close to a plug, of the shaft sleeve part, at least one expansion joint is formed in the periphery of the conical sleeve part,an outer conical surface is arranged on the periphery of the conical sleeve part, and an inner conical hole is formed in the side, facing the plug, of the sleeve; and the limiting part is positionedon the side, away from the plug, of the sleeve. The locking sleeve is arranged between the sleeve and the push rod, the outer conical surface of the locking sleeve tightly abuts against the inner conical hole of the sleeve by drawing the locking sleeve, the expansion joint is arranged on the conical sleeve part, and the inner conical hole extrudes the conical sleeve part to be folded inwards to hold the push rod when the limiting part is drawn, so that left-right sliding of the push rod is limited; and then, the plugs locked and positioned, so that the distance between the plugs on the two sides is conveniently and accurately adjusted.

The invention relates to a living public facility, in particular to a novel external suggestion storage box. When a front-end combination body is pushed upwards, letters stored in a rear combination body can be pushed out automatically by the rear combination body; the using position of the suggestion box can be adjusted, and thus the suggestion box can be used for different environments conveniently; and the using height of the suggestion box can be adjusted, and thus different people conveniently deliver letters. The novel external suggestion storage box comprises the front-end combination body, a spring fixing terminal, the rear combination body and a fixing frame; and sealing of the device can be achieved by the front-end combination body, sliding of the front-end combination body canbe limited by the spring fixing terminal, sliding of a front-end combination body main body can be limited by a sliding column nut in the spring fixing terminal, sliding of a slider can be limited bya slider nut, the front-end combination body can be clamped by the slider, the letters can be pushed outwards by an internal pushing slider in the rear combination body, and through cooperation of a roller and a bevel I, sliding-out of the internal pushing slider can be limited.

The invention provides a composite wheel hub forming equipment, which includes a forming cylinder, a sliding seat, a limit device and a linkage structure; one side of the forming cylinder has an opening, a door seal and a switch assembly; the sliding seat is slidably set and the top surface has a mold member. The limiting device is arranged on the forming cylinder, including a threaded rod; the linkage structure is arranged between the limiting device and the switch assembly, and is connected with the threaded rod and the switch assembly. When in use, add composite materials into the mold component, open the sealing door through the switch assembly, and the sliding seat enters the cover body through the opening; close the sealing door through the switch assembly, and the linkage structure drives the limit device to move to limit the movement of the mold component and the sliding seat. The air inside the enclosure is evacuated and heated to shape the composite material into the hub product. The composite wheel hub forming equipment provided by the invention avoids the use of a heating chamber, does not need to wait for the temperature change in the housing body, and only needs to move the sliding seat to realize product production, thereby improving product production efficiency.

The invention discloses a fabricated concrete decorative hanging plate switching structure which comprises a concrete main body wall and a decorative hanging plate, a plurality of embedded connecting pieces are embedded in the concrete main body wall in a pouring mode, and switching structural pieces connected with the embedded connecting pieces are embedded in the decorative hanging plate in a pouring mode, the decorative hanging plate can be directly decorated and fixed on the concrete main body wall without using a light steel keel by arranging the switching structural part, the switching structural part comprises the connecting sleeve connected with the connecting rod on the concrete main body wall, and the decorative hanging plate can be directly fixed through the matching of the connecting sleeve and the connecting rod by pressing the decorative hanging plate; and through the extension sleeve arranged in the switching structural part and the abutting rods arranged in the extension sleeve in a sliding mode, after the decorative hanging plate is fixed to the concrete main body wall, the abutting rods on the peripheral side of the connecting sleeve abut against the concrete main body wall, so that the peripheral side of the decorative hanging plate is supported in a multi-point mode, and the stability of the decorative hanging plate fixed to the main body wall is guaranteed.

The invention discloses a method for preparing graphene and liquid crystal polyester synergistically reinforced polymer fibers. The method uses graphene and liquid crystal polyester with a radial dimension of submicron or nanometer as reinforcements, and adjusts graphene / liquid crystal The ratio of polyester to play a synergistic reinforcing effect, and then use conventional melt spinning or melt composite spinning to prepare molten filaments with common industrial yarn raw materials, and then obtain primary fibers after air cooling, and then post-drawing treatment Or without post-drawing treatment, high-strength composite fibers can be obtained after heat setting. The polymer matrix obtained by this method is loaded with two reinforcements of graphene and liquid crystal polyester. The two reinforcements are well dispersed in the polymer matrix and form regular crystals on the surface by inducing the polymer molecular chain. structure, improve the crystallinity of the fiber, and transfer its high physical and mechanical properties into the polymer matrix, and obtain a polymer composite fiber with lower product price and high strength.

A kind of solid soap that cannot be broken includes a soap body and a fixed plate. One side of the fixed plate is a fixed surface in contact with the soap body, and a plurality of anti-slip release hooks are arranged on the fixed surface. The anti-slip release hooks have Different bending directions, and the hook shank of the anti-slip release hook is tapered, fixed on the fixed surface by its small diameter end, after the anti-slip release hook is embedded in the soap body, the soap body is fixed on the fixed surface of the fixed plate. The fixing plate provided by the present invention can provide support for the soap body, especially the middle part of the soap body, so as to avoid the breakage of the middle part, so that all the solid soap can be used up, avoiding waste, and because the bending direction of the anti-slip hook is inconsistent, Therefore, the soap body will not slip and fall off in the fixed surface of the fixed plate.

The invention discloses a unidirectional-drive power device of an electric motorcycle, and relates to a unidirectional drive device that is characterized by utilizing meshing gears. As an internal meshing ratchet drive component is arranged in a reduction gear, a pawl plate on an output shaft is in an idling state in an internal ratchet and cannot be driven to rotate by the internal ratchet when the wheel speed is higher than the revolution speed of the output shaft; accordingly, passive rotation of a motor rotor is avoided. Besides, since no groove is arranged in the middle of a pawl, the structural strength of the pawl is improved greatly, cracking and breaking of the pawl in the process of high-load transmission are prevented, and improvement of the structural strength of the pawl is guaranteed further on the premise of no size increase.

The invention relates to a silk cotton drawing device. The device comprises a base and a driving motor, and lifting parts at the two sides of the base are oppositely arranged; each lifting part comprises a threaded rod, a sliding groove and lifting rings, the top end of each threaded rod is fixedly connected with the top end of the corresponding sliding groove, the lifting ring, located at the uppermost end, in the multiple lifting rings is provided with internal threads, and the top of each threaded rod is provided with a smooth section; an upper hooking part is arranged on the lifting ring at the upper part, an upper tightness transmission device of the upper hooking part comprises a first gear, a second gear and an upper tightness wheel, a transmission belt is arranged among the first gear, the second gear and the upper tightness wheel, the first gear is meshed with the corresponding threaded rod, and the second gear is meshed with an upper gripper; a lower hooking part is arrangedon the lifting ring at the lower portion, a lower tightness wheel transmission device of the lower hooking part comprises a third gear, a fourth gear and a lower tightness wheel, a transmission belt is arranged among the third gear, the fourth gear and the lower tightness wheel, the third gear is meshed with the corresponding threaded rod, and the fourth gear is meshed with a conversion gear meshed with a lower gripper; and the upper tightness wheel and the lower tightness wheel are both provided with reset springs, and a transmission rope is arranged between the upper tightness wheel and thelower tightness wheel.

The invention discloses a solar power generation device and system, and relates to the technical field of solar panels. The solar power generation device comprises a base, wherein the upper side of the base is fixedly connected with a second hydraulic telescopic rod; the upper end of the second hydraulic telescopic rod is rotationally connected with a lower plate; and the lower side of the lower plate is rotationally connected with the upper side of the base. According to the solar power generation device, an outer plate is driven to move through a first hydraulic telescopic rod, and meanwhile, the outer plate drives an inner plate to move backwards in an upper groove, so that through the rotating effect between a rotating rod and an outer ring, when the inner plate drives the outer ring to slide backwards in the upper groove, the flexibility of shielding and opening of shielding cloth when a solar panel power generation mechanism is used and not used is guaranteed, the solar panel power generation mechanism has a good protection performance when not used, especially the good protection effect of shielding snow and rain on snowy days in the north is achieved, and the service life of the solar panel power generation mechanism is prolonged.

The invention discloses a rocker switch with a unique locking device, comprising a three-gear rocker switch component and a locking device component. The inner side of a switch key cap is provided with fixing columns and screw hole columns, which are inserted into four assembly holes in a switch key. Two guide ribs are distributed on the inner side of the switch key cap. The guide ribs are clamped into guide grooves in a matching manner. A locking slider is internally provided with a D-shaped counter bore. The lower part of a locking key is provided with a D-shaped column. The D-shaped column and the D-shaped counter bore are positioned in a matching manner. When the switch key cap is pressed to OFF, the switch key cap is parallel to the end face of a base of the rocker switch, and the locking slider does not produce interference. When the switch key cap is pressed to ON2, the switch key cap tilts at an angle relative to the end face of the base of the rocker switch, the top face of a rib, outside the lateral side of the base of the rocker switch, of the locking slider is lower than the end face of the base of the rocker switch, the sliding of the locking slider is limited, and the rocker switch is locked.

The invention discloses a water hammer eliminating device for mine drainage. The water hammer eliminating device comprises a pipe body and flanges. The flanges are arranged on the end parts of the pipe body, and the pipe body is connected with a water pipeline through the flanges. Box bodies are arranged on the upper side and the lower side of the pipe body in a communicating mode, movable plates are arranged on the sides, close to the pipe body, in the box bodies, the movable plates are connected with buffering assemblies, and the buffering assemblies are connected with the inner walls of the box bodies; a piston ring is arranged on the inner wall of the pipe body, a rotating plate is arranged in the center of the piston ring, the rotating plate can rotate in the piston ring, a plurality of elastic assemblies are connected to one side of the piston ring, connecting blocks are connected to the other ends of the elastic assemblies, and the other ends of the connecting blocks are connected with the inner wall of the pipe body; and through the combined action of the elastic assemblies and the buffering assemblies, counter-acting force is repeatedly formed on a water hammer, the water hammer is eliminated, damage of the water hammer to the mine pipe body and a valve is reduced, normal production is guaranteed, and the water conveying safety of the mine pipeline is improved.