Jack for tire installation and use method thereof

Abstract

The jack comprises a base, a cylinder body, a movable piston rod, a connecting plate, an electromagnetic valve seat, an oil delivery pump station and a controller, the cylinder body is installed at the top of the base, the movable piston rod is installed in the cylinder body in a sliding mode, the connecting plate is installed at the top of the movable piston rod, the electromagnetic valve seat is arranged on the side portion of the cylinder body, and the electromagnetic valve seat is communicated with an inner cavity of the cylinder body; the electromagnetic valve seat is communicated with an oil pump of the oil delivery pump station through a hydraulic pipeline, the controller is installed on the oil delivery pump station, and the oil pump of the oil delivery pump station, the electromagnetic valve seat and the controller are electrically connected through wires. A plurality of sleeves are hinged to the periphery of the top of the base, sliding rods are slidably mounted in inner cavities of the sleeves, the upper ends of the sliding rods are hinged to the connecting plates, and the sleeves are provided with self-locking units and unlocking mechanisms. The invention further discloses a using method of the jack for tire installation. The sliding rod and the sleeve can be matched with the cylinder body and the movable plug rod to support a heavy object, and sudden failure of jack support caused by cylinder explosion, pressure loss and the like is avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of jacks, and in particular relates to a jack for tire installation and a use method thereof. Background Art

[0002] Electric wheel mining dump trucks are essential engineering machinery for mining companies. The chassis of dump trucks is heavy. During assembly and tire installation, it is necessary to use a jack to support the chassis of the vehicle and adjust the space between the chassis and the ground to facilitate processing operations.

[0003] Existing jacks are all columnar. When in use, the movable rod is raised and lowered in the cylinder to support the heavy object. The top of the movable rod sometimes cannot fully contact the heavy object, resulting in uneven force applied by the heavy object on the movable rod.

[0004] The tires of electric wheel mining dump trucks are large and heavy. When the jack supports a heavy object, all the weight is concentrated on the movable rod, which affects the stability and service life of the movable rod, affecting the safety of the jack during use. In addition, existing jacks do not have a locking function. When the cylinder leaks oil, the movable rod often retracts suddenly, causing the supported load to fall and causing an accident. Summary of the Invention

[0005] The purpose of the present invention is to provide a tire installation jack and a method of using the same, so that the slide rod and the sleeve can cooperate with the cylinder body and the movable plug rod to support the heavy object, thereby avoiding sudden failure of the jack support caused by cylinder explosion, pressure loss, etc.

[0006] To achieve the above objectives, the technical solutions used in the present invention are: The tire installation jack includes: a base, a cylinder body, a movable plug rod, a connecting plate, a solenoid valve seat, an oil pumping station, and a controller. The cylinder body is installed on the top of the base, the movable plug rod is slidably installed in the cylinder body, the connecting plate is installed on the top of the movable plug rod, the solenoid valve seat is arranged on the side of the cylinder body, and the solenoid valve seat is connected to the inner cavity of the cylinder body; the solenoid valve seat is connected to the oil pump of the oil pumping station through a hydraulic pipeline, the controller is installed on the oil pumping station, and the oil pump of the oil pumping station, the solenoid valve seat and the controller are electrically connected through wires; a plurality of sleeves are hinged around the top of the base, a sliding rod is slidably installed in the inner cavity of the sleeve, the upper end of the sliding rod is hinged to the connecting plate, and the sleeve is installed with a self-locking unit and an unlocking mechanism.

[0007] Furthermore, the unlocking mechanism includes: an electric telescopic assembly, a steel wire rope, and a roller. The electric telescopic assembly is installed on the side of the sleeve, the telescopic end of the electric telescopic assembly is connected to one end of the steel wire rope, and the other end of the steel wire rope is connected to the movable plate; two vertical plates with opposite positions are provided on the top of the sleeve, and the vertical plates are provided with a first axial hole and a second axial hole. Both ends of the roller are installed on the first axial hole, and the steel wire rope passes through the upper part of the roller; the electric telescopic assembly and the controller are electrically connected through a wire; the self-locking unit includes: a rotating shaft, a first torsion spring, and a movable plate. A plurality of anti-slip grooves are provided on the side of the slide rod, and both ends of the rotating shaft are installed in the second axial hole, and the rear end of the movable plate is connected to the rotating shaft; the rotating shafts on both sides of the movable plate are respectively provided with first torsion springs, and the two ends of the first torsion spring are respectively connected to the movable plate and the vertical plate, and the front end of the movable plate is against the side of the slide rod. In the locked state, the front end of the movable plate is located in the anti-slip groove.

[0008] Furthermore, the electric telescopic component includes: a telescopic component housing, an electromagnet, and an iron block. The electromagnet is fixed inside the telescopic component housing. One end of the iron block is hinged to the inner wall of the telescopic component housing, and the other end is located on the side of the electromagnet. One end of the steel wire rope is connected to the iron block, and the electromagnet is connected to the power port of the controller through a wire.

[0009] Furthermore, a plurality of anti-slip grooves are arranged at equal distances on the side surface of the slide bar.

[0010] Furthermore, the oil pumping station includes: a hydraulic oil tank and an oil pump, the oil pump is fixed on the top of the hydraulic oil tank, the oil outlet of the oil pump is connected to the oil inlet of the solenoid valve seat through a hydraulic pipeline, the oil inlet of the oil pump is connected to the oil outlet of the hydraulic oil tank, and the oil return port of the hydraulic oil tank is connected to the oil outlet of the solenoid valve seat through a hydraulic pipeline; the power port and control port of the oil pump and the solenoid valve seat of the oil pumping station are electrically connected to the controller respectively, and the power port of the controller is connected to the external power supply through a wire.

[0011] Furthermore, a sleeve inner groove is provided on the sleeve, and anti-slip splints are rotatably installed on the inner walls on both sides of the sleeve inner groove. The anti-slip splints are U-shaped plates, and the cross-section of the U-shaped plates is wedge-shaped. The open side of the anti-slip splint is connected to the inner wall of the sleeve inner groove through a rotating shaft. The anti-slip splint is located at the lower part of the movable plate, and the sliding rod passes through the anti-slip splint.

[0012] Furthermore, a supporting tooling is connected to the top of the connecting plate, and both the connecting plate and the supporting tooling are provided with mounting holes, and a latch assembly is installed in the mounting hole. A positioning column is provided on the upper surface of the connecting plate, and a positioning groove is provided on the lower surface of the supporting tooling, and the positioning column is installed in the positioning groove.

[0013] Furthermore, an installation groove is provided on the upper surface of the connecting plate, and a pressure sensor is installed in the installation groove. The pressure sensor is connected to the supporting tooling, and a display screen is installed on the oil pumping station. The pressure sensor and the display screen are electrically connected to the controller; jacks are provided at the lower ends of the base and the oil pumping station, and placement grooves are provided at the four corners of the lower surface of the base. A support plate is hingedly installed in the placement groove, and the part of the support plate located in the placement groove is sleeved with a second torsion spring, and the two ends of the second torsion spring are respectively connected to the base and the support plate; anti-slip blocks are provided on the lower surface of the support plate and the inner side surface of the anti-slip splint, and a dust cover is installed on the upper end of the body, and the dust cover is provided with a dust cover through hole, and the movable plug rod is inserted in the dust cover through hole; a cleaning cover is installed on the dust cover, and the cleaning cover is sleeved on the movable plug rod.

[0014] How to use a tire mounting jack, including: The controller sends a command to connect the solenoid valve seat, and the oil pump station delivers hydraulic oil into the cylinder through the solenoid valve seat. The pressure inside the cylinder increases, and the hydraulic oil in the cylinder pushes the movable plug rod to extend. The movable plug rod lifts the connecting plate, and the connecting plate drives the slide rod to rise. The connecting plate lifts the weight to the specified height, and the controller sends a command to close the solenoid valve seat and the oil pump. After the slide rod rises, the front end of the movable plate rests on the anti-slip groove, limiting the slide rod from retracting and forming auxiliary support for the support fixture and the connecting plate. The controller sends a command, and the solenoid valve seat, oil pump, and electric telescopic assembly are opened simultaneously. The electromagnet is energized, and the iron block pulls the steel wire rope, which pulls the movable plate out of the anti-skid groove. The movable plug rod is slightly lifted and the oil pump is turned off. Under the pressure of the heavy object, the movable plug rod retracts into the cylinder body, the cylinder body is depressurized, and the hydraulic oil flows back to the hydraulic oil tank of the oil pump station; When the cylinder loses pressure during use, the supporting force of the cylinder on the movable plug rod disappears. Under the action of the weight of the heavy object, the supporting tooling and the connecting plate press down the movable plug rod and the sliding rod, and the movable plate rests on the anti-slip groove to support the sliding rod; the anti-slip splint is inserted between the sliding rod and the sleeve, and cooperates with the movable plate to self-lock the sliding rod. The sliding rod and the sleeve support the connecting plate to prevent the heavy object from falling.

[0015] Preferably, a suitable supporting fixture is selected according to the heavy object to be supported, the supporting fixture is positioned and installed on the connecting plate through the positioning groove and the positioning column, and the supporting fixture and the connecting plate are fixed by the pin assembly; the fork arm of the forklift is inserted into the socket, and the base and the oil pump station are moved to the appropriate positions respectively. Under the action of the gravity of the base, the support plate is unfolded, and the support plate supports the base; the solenoid valve seat and the oil pump station are connected through the hydraulic pipeline, the power supply of the oil pump, the display screen and the controller is turned on, and the electrical connection between the pressure sensor and the controller is turned on; the supporting fixture applies a force to the pressure sensor, and the weight of the heavy object supported by the jack is monitored through the pressure sensor, and the weight carried by the jack is displayed on the display screen; when the movable plug rod is raised or lowered, the movable plug rod is cleaned by the cleaning sleeve, and the contact position of the movable plug rod and the cylinder body is shielded and protected by the dust cover.

[0016] The technical effects of the present invention include: 1. The slide rod and sleeve are self-locked by the movable plate, anti-slip groove, first torsion spring and anti-slip splint, so that the slide rod and sleeve can cooperate with the cylinder body and movable plug rod to support the heavy object, avoiding the sudden failure of the jack support caused by cylinder explosion, pressure loss, etc., and improving the safety of the jack during use.

[0017] 2. The sliding rod and sleeve can provide auxiliary support for the movable plug rod, thereby improving the stability of the jack when supporting heavy objects, preventing tilting, and avoiding uneven force that causes leakage at the connection between the movable plug rod and the cylinder body, affecting the use of the jack. At the same time, the pressure applied when supporting heavy objects can be dispersed, reducing the force and damage applied to the movable plug rod, and extending the service life of the jack.

[0018] 3. The connection fittings and support work are quickly connected through the positioning grooves and positioning columns, and the connection fittings and support tooling are quickly locked and fixed through the pin assembly, which makes it easy to rotate the appropriate support tooling according to the required support position, improves the efficiency of support work installation and replacement, and improves the convenience of using the jack to support different weights. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 This is a schematic diagram of the first axonometric structure of the tire mounting jack of the present invention; Figure 2 This is a second axonometric structural diagram of the tire mounting jack of the present invention; Figure 3 It is a front view structural schematic diagram of the tire installation jack of the present invention; Figure 4 This is a schematic diagram of the sleeve and slide rod structure of the tire mounting jack of the present invention; Figure 5 yes Figure 4 The enlarged structural diagram at B in the middle; Figure 6 It is a schematic cross-sectional view of the connecting plate and supporting fixture of the tire mounting jack of the present invention; Figure 7 It is a structural diagram of the oil pumping station in the present invention; Figure 8 It is a structural schematic diagram of the base in the present invention; Figure 9 yes Figure 8 Magnified view of position C; Figure 10 yes Figure 1 A schematic diagram of the enlarged structure.

[0021] 1. Base; 2. Cylinder; 301. Electric telescopic assembly; 302. Steel wire rope; 303. Roller; 304. First torsion spring; 305. Rotating shaft; 306. Movable plate; 307. Anti-slip groove; 308. Storage groove; 309. Anti-slip splint; 4. Movable plug rod; 5. Connecting plate; 6. Support tooling; 7. Solenoid valve seat; 8. Oil pumping station; 9. Controller; 10. Display screen; 11. Sleeve; 12. Slide rod; 13. Latch assembly; 14. Positioning groove; 15. Positioning column; 16. Mounting groove; 17. Pressure sensor; 18. Jack; 19. Placement groove; 20. Support plate; 21. Second torsion spring; 22. Dust cover; 23. Cleaning cover. DETAILED DESCRIPTION

[0022] The following description sufficiently illustrates specific embodiments of the invention to enable those skilled in the art to practice and reproduce the invention.

[0023] like Figure 1 As shown, it is a first axonometric structural diagram of the tire installation jack in the present invention; Figure 2 As shown, it is a second axonometric structural diagram of the tire installation jack in the present invention; Figure 3 2 is a front view structural diagram of the tire installation jack of the present invention.

[0024] The tire installation jack includes: a base 1, a cylinder 2, a movable plug rod 4, a connecting plate 5, a solenoid valve seat 7, an oil pump station 8, and a controller 9; A cylinder body 2 is installed on the top of the base 1, and a movable plug rod 4 is slidably installed in the cylinder body 2. A connecting plate 5 is installed on the top of the movable plug rod 4. An electromagnetic valve seat 7 is provided on the side of the cylinder body 2, and the electromagnetic valve seat 7 is connected to the inner cavity of the cylinder body 2; the electromagnetic valve seat 7 is connected to the oil pump of the oil pumping station 8 through a hydraulic pipeline, and a controller 9 is installed on the oil pumping station 8. The oil pump of the oil pumping station 8, the electromagnetic valve seat 7 and the controller 9 are electrically connected through wires; a plurality of sleeves 11 are hingedly installed around the top of the base 1, and a sliding rod 12 is slidably installed in the inner cavity of the sleeve 11, and the upper end of the sliding rod 12 is hinged to the connecting plate 5; the sleeve 11 is equipped with a self-locking unit and an unlocking mechanism.

[0025] The oil pump of the oil pump station 8 and the power supply port and control port of the solenoid valve seat 7 are respectively electrically connected to the controller 9 (connected by wires), and the power supply port of the controller 9 is connected to an external power supply through a wire.

[0026] The oil pump station 8 includes: a hydraulic oil tank and an oil pump. The oil pump is fixed on the top of the hydraulic oil tank. The oil outlet of the oil pump is connected to the oil inlet of the solenoid valve seat 7 through a hydraulic pipeline. The oil inlet of the oil pump is connected to the oil outlet of the hydraulic oil tank. The oil return port of the hydraulic oil tank is connected to the oil outlet of the solenoid valve seat 7 through a hydraulic pipeline.

[0027] like Figure 4 As shown in FIG, it is a schematic diagram of the sleeve and slide rod structure of the tire installation jack in the present invention; Figure 5 As shown, Figure 4 Enlarged structural diagram at point B in the middle.

[0028] The unlocking mechanism includes: an electric telescopic component 301, a steel wire rope 302, and a roller 303. The electric telescopic component 301 is installed on the side of the sleeve 11. The telescopic end of the electric telescopic component 301 is connected to one end of the steel wire rope 302, and the other end of the steel wire rope 302 is connected to the movable plate 306; two vertical plates with opposite positions are provided on the top of the sleeve 11, and the vertical plates are provided with a first axial hole and a second axial hole. Both ends of the roller 303 are installed on the first axial hole, and the steel wire rope 302 passes through the upper part of the roller 303; the electric telescopic component 301 and the controller 9 are electrically connected through a wire.

[0029] The electric telescopic assembly 301 includes a telescopic assembly housing, an electromagnet, and an iron block. The electromagnet is fixed inside the telescopic assembly housing. One end of the iron block is hinged to the inner wall of the telescopic assembly housing, and the other end is located on the side of the electromagnet. One end of the steel wire rope 302 is connected to the iron block. The electromagnet is connected to the power port of the controller 9 via a wire.

[0030] When the jack is in use, the electric telescopic component 301 does not work. When the jack is working normally, the movable plate 306 is not subjected to the downward pressure. When the jack is used, when the supported weight needs to be lowered, the electric telescopic component 301 pulls the wire rope 302, and the wire rope 302 pulls the movable plate 306, releasing the self-locking of the movable plate 306 on the slide bar 12, so that the jack can lower the supported weight. When the wire rope 302 is pulled, the wire rope is guided by the roller 303, thereby improving the convenience of moving the wire rope 302.

[0031] The self-locking unit includes: a rotating shaft 305, a first torsion spring 304, and a movable plate 306. A plurality of anti-slip grooves 307 are provided on the side of the slide rod 12. Both ends of the rotating shaft 305 are installed in the second shaft hole, and the rear end of the movable plate 306 is connected to the rotating shaft 305; the rotating shafts 305 on both sides of the movable plate 306 are respectively provided with first torsion springs 304, and the two ends of the first torsion spring 304 are respectively connected to the movable plate 306 and the vertical plate. The front end of the movable plate 306 is against the side of the slide rod 12. In the locked state, the front end of the movable plate 306 is located in the anti-slip groove 307.

[0032] A plurality of anti-slip grooves 307 are arranged at equal distances on the side of the slide bar 12 .

[0033] A sleeve inner groove 308 is provided on the sleeve 11, and anti-slip splints 309 are rotatably installed on the inner walls of both sides of the sleeve inner groove 308. The anti-slip splints 309 are U-shaped plates, and the cross-section of the U-shaped plate is wedge-shaped. The open side of the anti-slip splint 309 is connected to the inner wall of the sleeve inner groove 308 through a rotating shaft. The anti-slip splint 309 is located at the lower part of the movable plate 306, and the slide rod 12 passes through the anti-slip splint 309.

[0034] When the jack is in use, the slide bar 12 and the sleeve 11 assist in supporting the weight. When the slide bar 12 rises, under the action of the first torsion spring 304, the front end of the movable plate 306 contacts the anti-skid groove 307, and the movable plate 306 can automatically reset and enter the anti-skid groove 307, and the movable plate 306 does not press down the anti-skid splint 309; when the jack descends normally, the movable plate 306 is pulled up by the steel wire rope 302 of the unlocking mechanism, so that the movable plate 306 is separated from the anti-skid groove 307, and the locking of the movable plate 306 on the slide bar 12 is released; when the jack is lowered .... When an abnormality occurs in the jack, the slide bar 12 will fall in the sleeve 11. At this time, the unlocking mechanism has not received the command from the controller 9, and the wire rope 302 has not pulled up the movable plate 306. The movable plate 306 is against the anti-slip groove 307, restricting the slide bar 12 from falling. At the same time, the movable plate 306 presses the anti-slip splint 309 downward under the pressure of the anti-slip groove 307, inserts it between the sleeve 11 and the slide bar 12, and cooperates with the movable plate 306 to lock the slide bar 12, avoiding the danger of sudden decompression of the hydraulic cylinder, thereby improving the safety of the jack during use.

[0035] like Figure 6 FIG. 1 is a schematic cross-sectional view of the connecting plate 5 and the supporting fixture 6 of the tire mounting jack according to the present invention.

[0036] According to the required support position, select the appropriate support fixture 6 and connect it to the top of the connecting plate 5. Both the connecting plate 5 and the support fixture 6 are provided with mounting holes, and the mounting holes are installed with latch assemblies 13. The latch assemblies 13 can quickly lock and fix the connecting plate 5 and the support fixture 6, making it easy to install different support tools on the connecting plate 5, effectively improving the convenience and efficiency of replacing and installing the support fixture 6.

[0037] A positioning column 15 is provided on the upper surface of the connecting plate 5, and a positioning groove 14 is provided on the lower surface of the supporting tooling 6. The positioning column 15 is installed in the positioning groove 14. Through the positioning groove 14 and the positioning column 15, the connecting plate 5 and the supporting tooling 6 can be quickly positioned and installed, thereby improving the convenience and efficiency of the installation of the supporting tooling 6.

[0038] The upper surface of the connecting plate 5 is provided with a mounting groove 16, in which a pressure sensor 17 is installed. The pressure sensor 17 is connected to the supporting fixture 6. A display screen 10 is installed on the oil pump station 8. The pressure sensor 17 and the display screen 10 are electrically connected to the controller 9, and the weight carried by the jack is displayed via the display screen 10. When the jack is in use, the supporting fixture 6 applies a force to the pressure sensor 17, and the pressure sensor 17 monitors the weight of the weight supported by the jack. This prevents the weight of the weight from exceeding the applicable range of the jack and causing damage to the jack, thereby improving safety, facilitating timely control of the weight carried by the jack by the staff, and improving safety during the use of the jack.

[0039] When in use, the jack is placed at the position where it needs to be used, the solenoid valve seat 7 and the oil pumping station 8 are connected, the controller 9 outputs an opening command, the solenoid valve seat 7 is opened, and the oil pumping station 8 supplies hydraulic oil to the cylinder body 2 through the solenoid valve seat 7, so that the movable plug rod 4 is extended, and the movable plug rod 4 drives the connecting plate 5 and the supporting tooling 6 to move, so that the supporting tooling 6 fits onto the heavy object and lifts the heavy object to complete the support of the heavy object; when the movable plug rod 4 drives the connecting plate 5 to rise, the connecting plate 5 drives the sliding rod 12 to rise, adjusts the connection length of the sliding rod 12 and the sleeve 11, and auxiliary supports the movable plug rod 4 through the sleeve 11 and the sliding rod 12, thereby improving the stability of the entire jack, and can disperse the gravity exerted on the movable plug rod 4, reduce the force exerted on the movable plug rod 4, and extend the service life; during the use of the jack, the controller 9 outputs a closing command, the solenoid valve seat 7 is closed, and the hydraulic oil in the cylinder body 2 is pressurized through the solenoid valve seat 7 to achieve hydraulic self-locking, so that the jack can continue to support the heavy object. When the jack explodes or the hydraulic oil in the cylinder body 2 is depressurized, the supporting force on the movable plug rod 4 disappears and the movable plug rod 4 falls. At this time, the sliding rod 12 and the sleeve 11 are locked by the self-locking unit of the sleeve 11 to prevent sliding between the sliding rod 12 and the sleeve 11. The sleeve 11 and the sliding rod 12 form a jack to support heavy objects, effectively improving safety.

[0040] like Figure 7 As shown, it is a structural diagram of the oil pump station 8 in the present invention; Figure 8 As shown, it is a schematic structural diagram of the base 1 in the present invention; Figure 9 As shown, the present invention Figure 8 Enlarged view of position C.

[0041] The lower ends of the base 1 and the oil pump station 8 are both provided with a socket 18, which facilitates the use of external devices such as a forklift or a ground ox to move the base 1 and the oil pump station 8, thereby improving the convenience of movement.

[0042] The four corners of the lower surface of the base 1 are provided with placement grooves 19, and a support plate 20 is hingedly installed in the placement groove 19. The part of the support plate 20 located in the placement groove 19 is sleeved with a second torsion spring 21, and the two ends of the second torsion spring 21 are respectively connected to the base 1 and the support plate 20. When the jack is not in use, under the action of the second torsion spring 21, the support plate 20 is tilted and stored in the placement groove 19. When the jack is in use, the base 1 is placed on the ground. Under the action of the gravity of the base 1, the base 1 applies a force to the support plate 20. Since the support plate 20 is tilted and stored in the placement groove 19, the support plate 20 moves to the four sides of the base 1 when subjected to gravity, so that the support plate 20 forms an inclined support around the base 1, effectively improving the stability and anti-slip performance of the base 1.

[0043] Anti-slip blocks are provided on the lower surface of the support plate 20 and the inner surface of the anti-slip cleat 309. The anti-slip blocks provided on the side can effectively improve the stability and anti-slip properties of the anti-slip cleat 309 when clamping. The anti-slip blocks on the lower surface can improve the anti-slip properties of the support plate 20, which can effectively improve the stability of the support plate 20 when supporting the base 1.

[0044] like Figure 10 As shown, the present invention Figure 1 A schematic diagram of the enlarged structure.

[0045] A dust cover 22 is mounted on the upper end of the cylinder body 2. The dust cover 22 is provided with a dust cover through hole, and the movable plug rod 4 is inserted into the dust cover through hole. The dust cover 22 shields and protects the contact point between the movable plug rod 4 and the cylinder body 2, effectively reducing contamination of the connection between the movable plug rod 4 and the cylinder body 2 by impurities.

[0046] A cleaning sleeve 23 is mounted on the dust cover 22 and is sleeved on the movable stopper rod 4. The cleaning sleeve 23 is made of rubber. When the movable stopper rod 4 is raised or lowered, the cleaning sleeve 23 cleans the movable stopper rod 4, thereby improving the cleanliness of the contact area between the movable stopper rod 4 and the cylinder body 2, effectively reducing the contamination and blockage of the movable stopper rod 4 and the cylinder body 2 caused by impurities on the movable stopper rod 4, and reducing malfunctions caused by impurity blockage.

[0047] How to use the tire installation jack is as follows: 1. Select the appropriate support fixture 6 according to the weight to be supported, and position and install the support fixture 6 on the connecting plate 5 through the positioning groove 14 and the positioning column 15. At the same time, fix the support fixture 6 and the connecting plate 5 with the latch assembly 13; 2. Insert the forklift's fork arm into the socket 18 and move the base 1 and the oil pump station 8 to appropriate positions. Under the gravity of the base 1, the support plate 20 unfolds and supports the base 1. 3. Connect the solenoid valve seat 7 and the oil pump station 8 through the hydraulic pipeline, turn on the power supply of the oil pump, display screen 10 and controller 9, and connect the pressure sensor 17 to the controller 9; 4. The solenoid valve seat 7 is connected through the controller 9, and the oil pump station 8 delivers hydraulic oil into the cylinder body 2 through the solenoid valve seat 7. The pressure inside the cylinder body 2 increases, and the hydraulic oil in the cylinder body 2 pushes the movable plug rod 4 to extend. The movable plug rod 4 lifts the supporting tooling 6 and the connecting plate 5. The connecting plate 5 drives the sliding rod 12 to rise, and the supporting tooling 6 is attached to the heavy object, lifting the heavy object to the specified height. The controller 9 sends a command to close the solenoid valve seat 7 and the oil pump, completing the long-term support of the heavy object; 5. After the slide bar 12 is raised, the front end of the movable plate 306 abuts against the anti-slip groove 307, limiting the retraction of the slide bar 12 and providing auxiliary support for the supporting fixture 6 and the connecting plate 5; When the slide bar 12 moves, under the action of the first torsion spring 304 , the movable plate 306 can automatically return to the anti-slip groove 307 .

[0048] When the jack is in use, the supporting tooling 6 applies a force to the pressure sensor 17 , the weight of the object supported by the jack is monitored by the pressure sensor 17 , and the weight carried by the jack is displayed on the display screen 10 .

[0049] 6. After the jack is used and the tire is installed in place, the controller 9 sends a command to the solenoid valve seat 7. The solenoid valve seat 7, the oil pump, and the electric telescopic assembly 301 are turned on simultaneously. The electromagnet is energized, and the iron block pulls the steel wire rope 302. The steel wire rope 302 pulls the movable plate 306 out of the anti-skid groove 307. The movable plug rod 4 is slightly lifted and the oil pump is turned off. Under the pressure of the heavy object, the movable plug rod 4 retracts into the cylinder body 2, the cylinder body 2 is depressurized, and the hydraulic oil flows back to the hydraulic oil tank of the oil pump station 8; 7. If the jack fails during use and the cylinder 2 loses pressure, the supporting force of the cylinder 2 on the movable plug rod 4 disappears. Under the action of the weight of the heavy object, the supporting tool 6 and the connecting plate 5 press down the movable plug rod 4 and the slide rod 12. The movable plate 306 abuts against the anti-slip groove 307, providing support for the slide rod 12. At the same time, the anti-slip splint 309 is inserted between the slide bar 12 and the sleeve 11, and cooperates with the movable plate 306 to self-lock the slide bar 12, so that the slide bar 12 and the sleeve 11 support the connecting plate 5 to prevent the heavy object from falling.

[0050] When the movable plug rod 4 is raised or lowered, the cleaning sleeve 23 is used to clean the movable plug rod 4, thereby improving the cleanliness of the contact position between the movable plug rod 4 and the cylinder body 2. The dust cover 22 is used to shield and protect the contact position between the movable plug rod 4 and the cylinder body 2, thereby effectively reducing the contamination of the connection between the movable plug rod 4 and the cylinder body 2 by impurities and reducing jack failures.

[0051] The terms used in this invention are descriptive and exemplary, rather than restrictive. Since the present invention can be embodied in a variety of forms without departing from the spirit or essence of the technical solution, it should be understood that the above-described embodiments are not limited to any of the foregoing details, but should be interpreted broadly within the spirit and scope of the appended claims. Therefore, all changes and modifications that fall within the scope of the claims or their equivalents are intended to be covered by the appended claims.

Claims

1. A tire installation jack, characterized in that: include: The base, cylinder body, movable plug rod, connecting plate, solenoid valve seat, oil pumping station and controller are as follows: the cylinder body is installed on the top of the base, the movable plug rod is slidably installed in the cylinder body, the connecting plate is installed on the top of the movable plug rod, the solenoid valve seat is arranged on the side of the cylinder body, and the solenoid valve seat is connected to the inner cavity of the cylinder body; the solenoid valve seat is connected to the oil pump of the oil pumping station through a hydraulic pipeline, the controller is installed on the oil pumping station, and the oil pump, solenoid valve seat and controller of the oil pumping station are electrically connected through wires; a plurality of sleeves are hinged around the top of the base, a sliding rod is slidably installed in the inner cavity of the sleeve, the upper end of the sliding rod is hinged to the connecting plate, and the sleeve is installed with a self-locking unit and an unlocking mechanism.

2. The tire mounting jack according to claim 1, wherein: The unlocking mechanism includes: an electric telescopic assembly, a steel wire rope, and a roller. The electric telescopic assembly is installed on the side of the sleeve. The telescopic end of the electric telescopic assembly is connected to one end of the steel wire rope, and the other end of the steel wire rope is connected to the movable plate. Two vertical plates with opposite positions are provided on the top of the sleeve. The vertical plates are provided with a first axial hole and a second axial hole. Both ends of the roller are installed on the first axial hole, and the steel wire rope passes through the upper part of the roller. The electric telescopic assembly and the controller are electrically connected through a wire. The self-locking unit includes: a rotating shaft, a first torsion spring, and a movable plate. A plurality of anti-slip grooves are provided on the side of the slide rod. Both ends of the rotating shaft are installed in the second axial hole, and the rear end of the movable plate is connected to the rotating shaft. The rotating shafts on both sides of the movable plate are respectively provided with first torsion springs, and the two ends of the first torsion spring are respectively connected to the movable plate and the vertical plate. The front end of the movable plate is against the side of the slide rod. In the locked state, the front end of the movable plate is located in the anti-slip groove.

3. The tire mounting jack according to claim 2, wherein: The electric telescopic component includes: a telescopic component housing, an electromagnet, and an iron block. The electromagnet is fixed inside the telescopic component housing. One end of the iron block is hinged to the inner wall of the telescopic component housing, and the other end is located on the side of the electromagnet. One end of the steel wire rope is connected to the iron block, and the electromagnet is connected to the power port of the controller through a wire.

4. The tire mounting jack according to claim 2, wherein: A plurality of anti-slip grooves are arranged at equal distances on the side surface of the slide bar.

5. The tire mounting jack according to claim 1, wherein: The oil pumping station includes: a hydraulic oil tank and an oil pump. The oil pump is fixed on the top of the hydraulic oil tank. The oil outlet of the oil pump is connected to the oil inlet of the solenoid valve seat through a hydraulic pipeline. The oil inlet of the oil pump is connected to the oil outlet of the hydraulic oil tank. The oil return port of the hydraulic oil tank is connected to the oil outlet of the solenoid valve seat through a hydraulic pipeline. The power port and control port of the oil pump and solenoid valve seat of the oil pump station are electrically connected to the controller respectively, and the power port of the controller is connected to the external power supply through a wire.

6. The tire mounting jack according to claim 1, wherein: The sleeve is provided with an inner groove of the sleeve, and anti-slip splints are rotatably installed on the inner walls on both sides of the inner groove of the sleeve. The anti-slip splint is a U-shaped plate, and the cross-section of the U-shaped plate is wedge-shaped. The open side of the anti-slip splint is connected to the inner wall of the inner groove of the sleeve through a rotating shaft. The anti-slip splint is located at the lower part of the movable plate, and the sliding rod passes through the anti-slip splint.

7. The tire mounting jack according to claim 1, wherein: A supporting tooling is connected to the top of the connecting plate. Both the connecting plate and the supporting tooling are provided with mounting holes. A latch assembly is installed in the mounting hole. A positioning column is provided on the upper surface of the connecting plate. A positioning groove is provided on the lower surface of the supporting tooling. The positioning column is installed in the positioning groove.

8. The tire mounting jack according to claim 1, wherein: The upper surface of the connecting plate is provided with an installation groove, in which a pressure sensor is installed, the pressure sensor is connected to the supporting tooling, a display screen is installed on the oil pumping station, and the pressure sensor and the display screen are electrically connected to the controller; the lower ends of the base and the oil pumping station are provided with jacks, and the four corners of the lower surface of the base are provided with placement grooves, and a support plate is hingedly installed in the placement groove, and the part of the support plate located in the placement groove is sleeved with a second torsion spring, and the two ends of the second torsion spring are respectively connected to the base and the support plate; anti-slip blocks are provided on the lower surface of the support plate and the inner side surface of the anti-slip splint, and a dust cover is installed on the upper end of the body, and the dust cover is provided with a dust cover through hole, and the movable plug rod is inserted in the dust cover through hole; a cleaning sleeve is installed on the dust cover, and the cleaning sleeve is sleeved on the movable plug rod.

9. The method for using the tire mounting jack according to any one of claims 1 to 8, wherein: include: The controller sends a command to connect the solenoid valve seat, and the oil pump station delivers hydraulic oil into the cylinder through the solenoid valve seat. The pressure inside the cylinder increases, and the hydraulic oil in the cylinder pushes the movable plug rod to extend. The movable plug rod lifts the connecting plate, and the connecting plate drives the slide rod to rise. The connecting plate lifts the weight to the specified height, and the controller sends a command to close the solenoid valve seat and the oil pump. After the slide rod rises, the front end of the movable plate rests on the anti-slip groove, limiting the slide rod from retracting and forming auxiliary support for the support fixture and the connecting plate. The controller sends a command, and the solenoid valve seat, oil pump, and electric telescopic assembly are opened simultaneously. The electromagnet is energized, and the iron block pulls the steel wire rope, which pulls the movable plate out of the anti-skid groove. The movable plug rod is slightly lifted and the oil pump is turned off. Under the pressure of the heavy object, the movable plug rod retracts into the cylinder body, the cylinder body is depressurized, and the hydraulic oil flows back to the hydraulic oil tank of the oil pump station; When the cylinder loses pressure during use, the supporting force of the cylinder on the movable plug rod disappears. Under the action of the weight of the heavy object, the supporting tooling and the connecting plate press down the movable plug rod and the sliding rod, and the movable plate rests on the anti-slip groove to support the sliding rod; the anti-slip splint is inserted between the sliding rod and the sleeve, and cooperates with the movable plate to self-lock the sliding rod. The sliding rod and the sleeve support the connecting plate to prevent the heavy object from falling.

10. The method for using the tire mounting jack according to claim 9, wherein: Select appropriate supporting fixtures according to the heavy objects to be supported, position and install the supporting fixtures on the connecting plate through the positioning grooves and positioning columns, and fix the supporting fixtures and the connecting plate through the pin assembly; insert the fork arm of the forklift into the socket, move the base and the oil pump station to the appropriate positions respectively, and under the action of the gravity of the base, the support plate unfolds, and the support plate supports the base; connect the solenoid valve seat and the oil pump station through the hydraulic pipeline, turn on the power of the oil pump, display screen and controller, and connect the electrical connection between the pressure sensor and the controller; the supporting fixture applies force to the pressure sensor, monitors the weight of the heavy object supported by the jack through the pressure sensor, and displays the weight carried by the jack through the display screen; when the movable plug rod is raised or lowered, the movable plug rod is cleaned through the cleaning sleeve, and the contact position of the movable plug rod and the cylinder body is shielded and protected by the dust cover.

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