Hydraulic driving structure of hydraulic control omnidirectional truck-mounted forklift

Abstract

The invention relates to the technical field of forklifts, in particular to a hydraulic driving structure of a hydraulic control omni-directional truck-mounted forklift, which comprises a connecting seat fixed on the forklift, a door frame mounted on the connecting seat, a lifting rail arranged on the inner side of the door frame, a pallet fork mounted in the lifting rail in a matched manner, and a lifting seat mounted in the lifting rail in a matched manner, two groups of fork bodies are fixedly mounted on the lifting seat, placing grooves are formed in the fork bodies, telescopic plates are mounted in the placing grooves, overturning hydraulic cavities are formed in the telescopic plates, overturning pistons are mounted in the overturning hydraulic cavities in a matched mode and used for driving tooth-missing gears to rotate, and the tooth-missing gears are used for being in meshing transmission with gear plates; the overturning hydraulic cavity is in power connection with a power assembly, so that the overturning plate is overturned from the horizontal state to the vertical state to the maximum extent; due to the fact that the turnover plate is arranged at the front end of the goods and is in a horizontal state during goods loading, goods loading is not affected, meanwhile, the goods can be protected, the goods are prevented from sliding off, and safety is improved.

Description

Technical Field

[0001] The invention relates to the technical field of forklifts, and in particular to a hydraulic drive structure of a hydraulically controlled omnidirectional truck-mounted forklift. Background Art

[0002] Hydraulic forklift is a commonly used material handling equipment, which plays an important role in logistics, warehousing, manufacturing and other fields. Hydraulic forklift mainly uses hydraulic system to realize the lifting and handling of goods. The hydraulic pump converts mechanical energy into hydraulic energy, and then the hydraulic cylinder converts hydraulic energy into mechanical energy to push the fork up or down.

[0003] The Chinese invention patent with application number 201510718402.X provides a hydraulic universal four-wheel drive forklift, including a working device, a body structure, a drive system, a steering system and a balancing system. The working device is arranged at the front of the body structure. The body structure is composed of a frame and a cab, and the cab is arranged on the top of the frame; the drive system is arranged at the bottom of the frame, and the drive system adopts a four-wheel drive system, and the drive system consists of four drive wheels; the hydraulic universal four-wheel drive forklift can control the independent steering of the four drive wheels through the steering system, which greatly facilitates the use of factories and transportation companies.

[0004] However, the applicant has found that the prior art has at least the following problems:

[0005] For some stacked or easily sliding goods, when the forklift brakes suddenly, the goods are easy to slide or fall from the forks of the forklift, causing damage to the goods, and in serious cases, may injure people. Summary of the invention

[0006] In view of this, the purpose of the present invention is to provide a hydraulic drive structure of a hydraulically controlled omnidirectional truck-mounted forklift to solve the problem that cargo is prone to slipping and tipping over during the emergency braking process of the forklift.

[0007] Based on the above purpose, the present invention provides a hydraulic driving structure of a hydraulically controlled omnidirectional truck-mounted forklift, including a connecting seat for fixing on the forklift, a door frame is installed on the connecting seat, a lifting rail is provided on the inner side of the door frame, a cargo fork is adapted to be installed in the lifting rail, the cargo fork includes a lifting seat adapted to be installed in the lifting rail, two sets of fork bodies are fixedly installed on the lifting seat, a placement slot is provided on the fork body, a telescopic plate is installed in the placement slot, a flipping hydraulic chamber is provided inside the telescopic plate, a flipping piston is adapted to be installed in the flipping hydraulic chamber, the flipping piston is connected to a gear plate, the gear plate is meshedly connected with a toothless gear, the toothless gear is connected to a flip shaft, the flip shaft is connected to a connecting frame, the end of the flip shaft is connected to an axle seat, the axle seat is installed on the top of the telescopic plate, the connecting frame is integrally formed with a flip plate, the toothless gear is used for meshing and transmitting with the gear plate, so that the flip plate can be flipped from horizontal to vertical to the maximum extent, and the flipping hydraulic chamber power is connected to a power component;

[0008] The power assembly includes a hydraulic box fixedly mounted on the connecting seat, the hydraulic box is connected to a hydraulic driving rod, the top of the hydraulic driving rod is connected to a sprocket seat, a sprocket is mounted on the sprocket seat, a chain is meshed and mounted on the sprocket, one end of the chain is fixedly connected to the lifting seat, and the other end is fixedly connected to the lifting connecting seat, the lifting connecting seat is fixedly mounted on the hydraulic box, and the lifting connecting seat is power-connected to a hydraulic distribution assembly for controlling the movement of the lifting connecting seat and converting the weight of the cargo on the fork into driving force to drive the flip piston to move.

[0009] Optionally, two groups of limit blocks are provided at the front end of the placement slot, and an avoidance opening is provided between the two groups of limit blocks for installing the flip plate and allowing the flip plate to flip. The front end of the gear plate is connected to a resistance seat, which is used to resist the limit blocks to limit the position of the gear plate.

[0010] Optionally, the rear end of the fork body placement groove is connected to a telescopic cavity, a telescopic spring rod is installed in the telescopic cavity, the end of the telescopic spring rod is connected to a telescopic plate, the telescopic plate is partially adapted to be installed in the telescopic cavity, the telescopic spring rod is installed with a dynamometer for monitoring the elastic force of the telescopic spring rod, and is electrically connected to the hydraulic distribution assembly to control the movement of the lifting connecting seat.

[0011] Optionally, the hydraulic distribution assembly includes a connecting plate fixedly connected to the lifting connecting seat, the connecting plate is connected to a hydraulic push rod, the hydraulic push rod is adapted to be connected to a hydraulic cylinder, the hydraulic cylinder is fixedly mounted on the hydraulic box, the hydraulic cylinder is connected to a shunt pipe, the shunt pipe is connected to the flipping hydraulic chamber, and a regulating valve assembly is installed in the hydraulic cylinder to control the opening and closing of the shunt pipe.

[0012] Optionally, the regulating valve assembly includes a valve body adapted to be installed in a hydraulic cylinder, a center hole is provided in the center of the valve body, a diversion port connected to the center hole is provided on the side of the valve body, the diversion port cooperates with the diversion pipe, a guide block is installed on the periphery of the valve body, a guide groove for movement of the guide block is provided on the inner wall of the hydraulic cylinder, a threaded column is threadedly installed in the center hole, a sealing plug is installed on the threaded column extending upward for sealing the top of the hydraulic cylinder, a threaded rod is connected to the top of the threaded column, a jacking chamber is provided inside the threaded rod, the threaded column is installed in the jacking chamber so as to be movable up and down, an elastic rod is installed between the threaded column and the inner wall of the jacking chamber, the threaded rod is powered by a motor connected to the motor to drive the threaded rod to rotate, and a shut-off valve is provided on the diversion pipe.

[0013] Optionally, a vertical limiting groove is provided inside the pushing cavity, and limiting blocks are integrally formed on both sides of the threaded column. The limiting blocks are adapted to be installed in the limiting grooves, so as to limit the threaded column to be able to move up and down only in the pushing cavity.

[0014] Optionally, a fixed seat is installed on the top of the hydraulic cylinder, the fixed seat is connected to a motor seat, the motor seat is fixedly installed on the hydraulic box, the motor power is connected to a driving gear, the driving gear is meshingly connected to a gear ring, the gear ring is adapted to be connected to a mounting sleeve, the gear ring can be rotatably installed in the mounting sleeve, a threaded hole is opened in the gear ring, the threaded rod is adapted to be installed in the gear ring, and is locked by a nut.

[0015] Optionally, a distance meter is installed on the lifting seat to detect the distance between the cargo and the lifting seat.

[0016] Optionally, the upper surface of the fork body is provided with anti-slip grooves.

[0017] Optionally, a distance measuring sensor is provided on the top of the gantry to detect the height of the sprocket and place the sprocket in contact with the gantry.

[0018] Beneficial effects of the present invention: A hydraulic driving structure of a hydraulically controlled omnidirectional truck-mounted forklift, in which an oil pump drives a hydraulic driving rod to rise, and a top sprocket is raised, so that the chain pulls the cargo fork to rise. When the cargo rises to a certain height, the hydraulic distribution component releases the restriction on the lifting connection seat, and then under the gravity of the cargo, the chain pulls the lifting connection seat to rise, thereby giving a driving force to the hydraulic distribution component, and then pumping oil into the flip hydraulic cavity, so that the flip piston is driven. After the flip piston is driven, the driving gear plate engages with the toothless gear to rotate, so that the flip plate flips from a horizontal state to a vertical state, protecting the front end of the cargo. After that, the hydraulic distribution component restricts the lifting connection seat again, and the hydraulic driving rod continues to rise, so that the cargo can be forked normally. Since the flip plate is arranged at the front end of the cargo, and when loading the cargo, the flip plate is in a horizontal state, it can protect the cargo without affecting the loading of the cargo, and prevent the cargo from slipping, thereby improving safety. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0020] Figure 1 A schematic diagram of a hydraulic drive structure of a hydraulically controlled omnidirectional truck-mounted forklift according to an embodiment of the present invention Figure 1 ;

[0021] Figure 2 A schematic diagram of a hydraulic drive structure of a hydraulically controlled omnidirectional truck-mounted forklift according to an embodiment of the present invention Figure 2 ;

[0022] Figure 3This is a schematic diagram of the structure of a hydraulically driven forklift of a hydraulically controlled omnidirectional truck-mounted forklift according to an embodiment of the present invention;

[0023] Figure 4 A cross-sectional view of a hydraulically driven forklift of a hydraulically controlled omnidirectional truck-mounted forklift according to an embodiment of the present invention;

[0024] Figure 5 for Figure 4 A partial enlarged schematic diagram of part A;

[0025] Figure 6 for Figure 5 Working status diagram;

[0026] Figure 7 A schematic diagram of a power assembly of a hydraulic drive structure of a hydraulically controlled omnidirectional truck-mounted forklift according to an embodiment of the present invention Figure 1 ;

[0027] Figure 8 A schematic diagram of a power assembly of a hydraulic drive structure of a hydraulically controlled omnidirectional truck-mounted forklift according to an embodiment of the present invention Figure 2 ;

[0028] Fig. 9 for Figure 8 A partial enlarged schematic diagram of part B;

[0029] Fig.10 A cross-sectional schematic diagram of a regulating valve assembly.

[0030] The markings in the figure are:

[0031] 101, connecting seat; 102, door frame; 103, lifting rail; 201, fork; 202, lifting seat; 203, distance meter; 204, fork body; 205, telescopic plate; 206, flip plate; 207, shaft seat; 208, flip shaft; 209, limit block; 210, placement slot; 211, missing tooth gear; 212, connecting frame; 2041, telescopic chamber; 2042, telescopic spring rod; 2051, flip hydraulic chamber; 2052, flip piston; 2053, gear plate; 2054, conflict seat; 301, power assembly; 302, hydraulic box; 303, hydraulic Press drive rod; 304, sprocket seat; 305, sprocket; 306, chain; 307, lifting connection seat; 308, connecting plate; 309, motor seat; 310, fixed seat; 311, hydraulic push rod; 312, hydraulic cylinder; 313, shunt pipe; 314, mounting sleeve; 315, gear ring; 316, threaded rod; 317, motor; 318, driving gear; 319, valve body; 3191, shunt port; 3192, guide block; 320, guide groove; 321, sealing plug; 322, threaded column; 323, limiting block; 324, limiting groove; 325, elastic rod. DETAILED DESCRIPTION

[0032] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments.

[0033] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0034] like Figures 1 to 10 As shown, a specific embodiment of the present invention provides a hydraulic driving structure of a hydraulically controlled omnidirectional truck-mounted forklift, including a connecting seat 101 for fixing on the forklift, a gantry 102 is installed on the connecting seat 101, a lifting rail 103 is provided inside the gantry 102, and a cargo fork 201 is adapted to be installed in the lifting rail 103;

[0035] The fork 201 includes a lifting seat 202 adapted to be installed in the lifting rail 103, two sets of fork bodies 204 are fixedly installed on the lifting seat 202, a placement groove 210 is provided on the fork body 204, a telescopic plate 205 is installed in the placement groove 210, a reversing hydraulic chamber 2051 is provided inside the reversing plate 205, a reversing piston 2052 is adapted to be installed in the reversing hydraulic chamber 2051, and the reversing piston 2052 is connected to a gear plate 2053, and the gear plate 2053 is meshed with a missing tooth. Gear 211, the toothless gear 211 is connected to the flip shaft 208, the flip shaft 208 is connected to the connecting frame 212, the end of the flip shaft 208 is connected to the shaft seat 207, the shaft seat 207 is installed on the top of the telescopic plate 205, the connecting frame 212 is integrally formed with the flip plate 206, the toothless gear 211 is used to mesh with the gear plate 2053 for transmission, so that the flip plate 206 is flipped to the maximum extent from horizontal to vertical, and the flip hydraulic chamber 2051 is connected to the power assembly 301;

[0036] The power assembly 301 includes a hydraulic box 302 fixedly mounted on the connecting seat 101, the hydraulic box 302 is connected to a hydraulic driving rod 303, the top of the hydraulic driving rod 303 is connected to a sprocket seat 304, a sprocket 305 is mounted on the sprocket seat 304, a chain 306 is meshed and mounted on the sprocket 305, one end of the chain 306 is fixedly connected to the lifting seat 202, and the other end is fixedly connected to a lifting connecting seat 307, the lifting connecting seat 307 is fixedly mounted on the hydraulic box 302, and the lifting connecting seat 307 is powered and connected to a hydraulic distribution assembly for controlling the movement of the lifting connecting seat 307 and converting the weight of the cargo on the fork 201 into a driving force to drive the flip piston 2052 to move.

[0037] When the forklift lifts the cargo, the hydraulic box 302 supplies oil, the oil pump drives the hydraulic driving rod 303 to rise, and the top sprocket 305 rises, so that the chain 306 pulls the fork 201 to rise, and the lifting seat 202 of the fork 201 rises along the lifting rail 103. At this time, the hydraulic distribution component controls the lifting connection seat 307 to prevent lifting activities. When the cargo rises to a certain height, the hydraulic distribution component releases the restriction on the lifting connection seat 307, and under the gravity of the cargo, the chain 306 pulls the lifting connection seat 307. The connection seat 307 rises, thereby providing driving force to the hydraulic distribution assembly, and then pumping oil into the flip hydraulic chamber 2051, so that the flip piston 2052 is driven. After the flip piston 2052 is driven, the driving gear plate 2053 engages the toothless gear 211 to rotate, so that the flip plate 206 flips from a horizontal state to a vertical state to protect the front end of the cargo. After that, the hydraulic distribution assembly restricts the lifting connection seat 307 again, and the hydraulic drive rod 303 continues to rise, so that the cargo can be forked normally. Since the flip plate 206 is arranged at the front end of the cargo, and when loading the cargo, the flip plate 206 is in a horizontal state, it can protect the cargo without affecting the loading of the cargo, and prevent the cargo from sliding, thereby improving safety.

[0038] In some optional specific embodiments, such as Figures 1 to 6 As shown, the front end of the placement slot 210 is provided with two groups of limit blocks 209, and an escape opening is provided between the two groups of limit blocks 209, which is used to install the flip plate 206 and allow the flip plate 206 to flip, and the front end of the gear plate 2053 is connected to a conflict seat 2054, which is used to conflict with the limit blocks 209 to limit the position of the gear plate 2053. In use, after the gear plate 2053 drives the flip plate 206 to flip and stand upright, the conflict seat 2054 and the limit blocks 209 conflict with the fiber to prevent the gear plate 2053 from extending.

[0039] In some optional specific embodiments, such as Figures 1 to 6As shown, the rear end of the placement slot 210 of the fork body 204 is connected to a telescopic cavity 2041, a telescopic spring rod 2042 is installed in the telescopic cavity 2041, and the end of the telescopic spring rod 2042 is connected to a telescopic plate 205, and the telescopic plate 205 is partially adapted and installed in the telescopic cavity 2041. The telescopic spring rod 2042 is installed with an elastic force meter for monitoring the elastic force of the telescopic spring rod 2042 and electrically connected to the hydraulic distribution component to control the movement of the lifting connection seat 307. When the contact seat 2054 of the gear plate 2053 contacts the limit block 209, the telescopic plate 205 will retreat, thereby squeezing the telescopic spring rod 2042. When the elastic force meter detects that the elastic force increases, it is determined that the flip plate 206 has completed flipping at this time, and the hydraulic distribution component controls the movement of the lifting connection seat 307.

[0040] In some optional specific embodiments, such as Figures 1 to 10 As shown, the hydraulic distribution assembly includes a connecting plate 308 fixedly connected to the lifting connection seat 307, the connecting plate 308 is connected to a hydraulic push rod 311, the hydraulic push rod 311 is adapted to be connected to a hydraulic cylinder 312, the hydraulic cylinder 312 is fixedly installed on the hydraulic box 302, the hydraulic cylinder 312 is connected to a shunt pipe 313, the shunt pipe 313 is connected to the flip hydraulic chamber 2051, and a regulating valve assembly is installed in the hydraulic cylinder 312 to control the opening and closing of the shunt pipe 313. In use, when the shunt pipe 313 is closed, the lifting connection seat 307 cannot rise under the action of the hydraulic pressure in the hydraulic cylinder 312. After the shunt pipe 313 is opened, part of the hydraulic oil in the hydraulic cylinder 312 is pressed into the shunt pipe 313 to drive the flip plate 206 to flip.

[0041] In some optional specific embodiments, such as Fig. 9As shown, the regulating valve assembly includes a valve body 319 adapted to be installed in a hydraulic cylinder 312, a center hole is provided in the center of the valve body 319, a diversion port 3191 connected to the center hole is provided on the side of the valve body 319, the diversion port 3191 cooperates with the diversion pipe 313, a guide block 3192 is installed on the periphery of the valve body 319, a guide groove 320 for the guide block 3192 to move is provided on the inner wall of the hydraulic cylinder 312, a threaded column 322 is threadedly installed in the center hole, and the threaded column 322 extends upward and is equipped with a sealing plug 321 for sealing the top of the hydraulic cylinder 312. The top of the threaded column 322 is connected to a threaded rod 316. A jacking cavity is provided inside the threaded rod 316. The threaded column 322 is installed in the jacking cavity so as to be movable up and down. An elastic rod 325 is installed between the threaded column 322 and the inner wall of the jacking cavity. The threaded rod 316 is connected to a motor 317 for driving the threaded rod 316 to rotate. A shut-off valve is provided on the diverter pipe 313. When in use, the motor 317 drives the threaded rod 316 to rotate, thereby driving the threaded column 322 to rotate. The rotation of the threaded column 322 drives the valve body 319 to rotate. The valve body 319 rotates so that the center hole is connected to the shunt pipe 313 through the shunt port 3191, thereby pumping liquid into the shunt pipe 313. After the pumping is completed, the shut-off valve is closed to cut off the shunt pipe 313. Then, the threaded column 322 continues to rotate. Due to the restriction of the guide groove 320 on the guide block 3192, the valve body 319 no longer rotates with the threaded column 322. The threaded column 322 moves upward and compresses the elastic rod 325 until the threaded column 322 is completely separated from the valve body 319. At this time, the force of the hydraulic push rod 311 acts on the sealing plug 321 and finally acts on the elastic rod 325. When the forklift is driving, the vibration of the cargo caused by bumps can be buffered by the elastic rod 325 and the hydraulic pressure in the hydraulic cylinder 312, thereby reducing the vibration.

[0042] In some optional specific embodiments, such as Fig. 9 As shown, a vertical limiting groove 324 is opened inside the pushing cavity, and limiting blocks 323 are integrally formed on both sides of the threaded column 322. The limiting blocks 323 are adapted to be installed in the limiting groove 324, limiting the threaded column 322 to only be able to move up and down in the pushing cavity.

[0043] In some optional specific embodiments, such as Figures 7 to 10As shown, a fixing seat 310 is installed on the top of the hydraulic cylinder 312, and the fixing seat 310 is connected to a motor seat 309, and the motor seat 309 is fixedly installed on the hydraulic box 302. The motor 317 is connected to a driving gear 318, and the driving gear 318 is meshed with a gear ring 315. The gear ring 315 is adapted to be connected to a mounting sleeve 314, and the gear ring 315 can be rotatably installed in the mounting sleeve 314. A threaded hole is opened in the gear ring 315, and the threaded rod 316 is adapted to be installed in the gear ring 315 and locked by a nut. When in use, the driving gear 318 drives the gear ring 315 to rotate, thereby driving the threaded rod 316 to rotate, and then driving the threaded column 322 to rotate, thereby driving the threaded column 322 to move up and down inside the threaded rod 316.

[0044] In some optional specific embodiments, such as Figure 2 As shown, a distance meter 203 is installed on the lifting seat 202 to detect the distance between the cargo and the lifting seat 202 to ensure that the cargo is stably forked.

[0045] In some optional specific embodiments, such as Figure 1 to Figure 2 As shown, the upper surface of the fork body 204 is provided with anti-slip grooves.

[0046] In some optional implementations, a distance measuring sensor is provided on the top of the gantry 102 to detect the height of the sprocket 305 and place the sprocket 305 in contact with the gantry 102 .

[0047] The working principle of the present invention is as follows: when the forklift lifts the cargo, the hydraulic box 302 supplies oil, the oil pump drives the hydraulic driving rod 303 to rise, and the top sprocket 305 rises, so that the chain 306 pulls the cargo fork 201 to rise, and the lifting seat 202 of the cargo fork 201 rises along the lifting rail 103. At this time, the hydraulic distribution component controls the lifting connection seat 307 to prevent lifting activities. When the cargo rises to a certain height, the hydraulic distribution component releases the restriction on the lifting connection seat 307, and under the gravity of the cargo, the chain 306 The lifting connection seat 307 is pulled up, thereby providing driving force to the hydraulic distribution component, and then pumping oil into the flip hydraulic chamber 2051, so that the flip piston 2052 is driven. After the flip piston 2052 is driven, the driving gear plate 2053 engages the toothless gear 211 to rotate, so that the flip plate 206 flips from a horizontal state to a vertical state to protect the front end of the cargo. After that, the hydraulic distribution component restricts the lifting connection seat 307 again, and the hydraulic drive rod 303 continues to rise, so that the cargo can be forked normally. Since the flip plate 206 is arranged at the front end of the cargo, and when loading the cargo, the flip plate 206 is in a horizontal state, it can protect the cargo without affecting the loading of the cargo, and prevent the cargo from sliding, thereby improving safety.

[0048] When in use, the motor 317 drives the threaded rod 316 to rotate, thereby driving the threaded column 322 to rotate. The rotation of the threaded column 322 drives the valve body 319 to rotate. The valve body 319 rotates so that the center hole is connected to the shunt pipe 313 through the shunt port 3191, thereby pumping liquid into the shunt pipe 313. After the pumping is completed, the shut-off valve is closed to cut off the shunt pipe 313. Then, the threaded column 322 continues to rotate. Due to the restriction of the guide groove 320 on the guide block 3192, the valve body 319 no longer rotates with the threaded column 322. The threaded column 322 moves upward and compresses the elastic rod 325 until the threaded column 322 is completely separated from the valve body 319. At this time, the force of the hydraulic push rod 311 acts on the sealing plug 321 and finally acts on the elastic rod 325. When the forklift is driving, the vibration of the cargo caused by bumps can be buffered by the elastic rod 325 and the hydraulic pressure in the hydraulic cylinder 312, thereby reducing the vibration.

[0049] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples. Under the concept of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0050] The present invention is intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A hydraulic driving structure of a hydraulically controlled omnidirectional truck-mounted forklift, comprising a connecting seat (101) for fixing on the forklift, a gantry (102) being mounted on the connecting seat (101), a lifting rail (103) being arranged inside the gantry (102), a cargo fork (201) being adapted to be mounted in the lifting rail (103), and characterized in that: The cargo fork (201) comprises a lifting seat (202) adapted to be installed in the lifting rail (103), two sets of fork bodies (204) are fixedly installed on the lifting seat (202), a placement groove (210) is provided on the fork body (204), a telescopic plate (205) is installed in the placement groove (210), a reversing hydraulic cavity (2051) is provided inside the reversing plate (2055), a reversing piston (2052) is adapted to be installed in the reversing hydraulic cavity (2051), the reversing piston (2052) is connected to a gear plate (2053), and the gear plate (2053) is meshedly connected to the gear plate (2053) and has a notch. A toothed gear (211), the toothless gear (211) is connected to a flip shaft (208), the flip shaft (208) is connected to a connecting frame (212), the end of the flip shaft (208) is connected to an axle seat (207), the axle seat (207) is installed on the top of the telescopic plate (205), the connecting frame (212) is integrally formed with a flip plate (206), the toothless gear (211) is used to mesh with the gear plate (2053) for transmission, so that the flip plate (206) can be flipped to the maximum extent from horizontal to vertical, and the flip hydraulic chamber (2051) is connected to a power assembly (301); The power assembly (301) comprises a hydraulic box (302) fixedly mounted on the connecting seat (101); the hydraulic box (302) is connected to a hydraulic driving rod (303); the top end of the hydraulic driving rod (303) is connected to a sprocket seat (304); a sprocket (305) is mounted on the sprocket seat (304); a chain (306) is meshedly mounted on the sprocket (305); one end of the chain (306) is fixedly connected to the lifting seat (202); the other end of the chain (306) is fixedly connected to a lifting connecting seat (307); the lifting connecting seat (307) is fixedly mounted on the hydraulic box (302); the lifting connecting seat (307) is power-connected to a hydraulic distribution assembly for controlling the movement of the lifting connecting seat (307) and converting the weight of the cargo on the fork (201) into a driving force to drive the tipping piston (2052) to move.

2. The hydraulic driving structure of a hydraulically controlled omnidirectional truck-mounted forklift according to claim 1, characterized in that: Two groups of limit blocks (209) are provided at the front end of the placement groove (210), and an escape opening is provided between the two groups of limit blocks (209) for installing the flip plate (206) and allowing the flip plate (206) to perform a flipping action. The front end of the gear plate (2053) is connected to a resistance seat (2054), and the resistance seat (2054) is used to resist the limit block (209) to limit the position of the gear plate (2053).

3. The hydraulic driving structure of a hydraulically controlled omnidirectional truck-mounted forklift according to claim 2, characterized in that: The rear end of the placement groove (210) of the fork body (204) is connected to a telescopic cavity (2041), a telescopic spring rod (2042) is installed in the telescopic cavity (2041), the end of the telescopic spring rod (2042) is connected to a telescopic plate (205), and the telescopic plate (205) is partially adapted to be installed in the telescopic cavity (2041). The telescopic spring rod (2042) is installed with a dynamometer for monitoring the elastic force of the telescopic spring rod (2042) and electrically connected to a hydraulic distribution component to control the movement of the lifting connection seat (307).

4. The hydraulic driving structure of a hydraulically controlled omnidirectional truck-mounted forklift according to claim 1, characterized in that: The hydraulic distribution assembly comprises a connection plate (308) fixedly connected to the lifting connection seat (307), the connection plate (308) being connected to a hydraulic push rod (311), the hydraulic push rod (311) being adapted to be connected to a hydraulic cylinder (312), the hydraulic cylinder (312) being fixedly mounted on the hydraulic box (302), the hydraulic cylinder (312) being connected to a shunt pipe (313), the shunt pipe (313) being connected to the flipping hydraulic chamber (2051), and a regulating valve assembly being installed in the hydraulic cylinder (312) for controlling the opening and closing of the shunt pipe (313).

5. The hydraulic driving structure of a hydraulically controlled omnidirectional truck-mounted forklift according to claim 4, characterized in that: The regulating valve assembly comprises a valve body (319) adapted to be installed in a hydraulic cylinder (312), a center hole being provided in the center of the valve body (319), a flow diversion port (3191) being provided on the side of the valve body (319) and being connected to the center hole, the flow diversion port (3191) being matched with the flow diversion pipe (313), a guide block (3192) being installed on the circumference of the valve body (319), a guide groove (320) for the guide block (3192) to move being provided on the inner wall of the hydraulic cylinder (312), a threaded column (322) being threadedly installed in the center hole, and the threaded column (322) A sealing plug (321) is installed on the upper side of the hydraulic cylinder (312) and extends upwards to seal the top of the hydraulic cylinder (312). The top of the threaded column (322) is connected to a threaded rod (316). A jacking cavity is provided inside the threaded rod (316). The threaded column (322) is installed in the jacking cavity so as to be movable up and down. An elastic rod (325) is installed between the threaded column (322) and the inner wall of the jacking cavity. The threaded rod (316) is connected to a motor (317) for driving the threaded rod (316) to rotate. A shut-off valve is provided on the shunt pipe (313).

6. The hydraulic driving structure of a hydraulically controlled omnidirectional truck-mounted forklift according to claim 5, characterized in that: A vertical limiting groove (324) is provided inside the pushing cavity, and limiting blocks (323) are integrally formed on both sides of the threaded column (322). The limiting blocks (323) are adapted to be installed in the limiting groove (324) to limit the threaded column (322) to only be able to move up and down in the pushing cavity.

7. The hydraulic driving structure of a hydraulically controlled omnidirectional truck-mounted forklift according to claim 6, characterized in that: A fixing seat (310) is installed on the top of the hydraulic cylinder (312), and the fixing seat (310) is connected to a motor seat (309). The motor seat (309) is fixedly installed on the hydraulic box (302). The motor (317) is connected to a driving gear (318) by power, and the driving gear (318) is meshingly connected to a gear ring (315). The gear ring (315) is adapted to be connected to a mounting sleeve (314). The gear ring (315) is rotatably installed in the mounting sleeve (314). A threaded hole is opened in the gear ring (315), and a threaded rod (316) is adapted to be installed in the gear ring (315) and is locked by a nut.

8. The hydraulic driving structure of a hydraulically controlled omnidirectional truck-mounted forklift according to claim 1, characterized in that: The lifting seat (202) is provided with a distance meter (203) for detecting the distance between the cargo and the lifting seat (202).

9. The hydraulic driving structure of a hydraulically controlled omnidirectional truck-mounted forklift according to claim 1, characterized in that: The upper surface of the fork body (204) is provided with anti-slip grooves.

10. The hydraulic driving structure of a hydraulically controlled omnidirectional truck-mounted forklift according to claim 1, characterized in that: A distance measuring sensor is provided on the top of the door frame (102) for detecting the height of the sprocket wheel (305) and placing the sprocket wheel (305) in contact with the door frame (102).

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