A hydraulic drive structure for a hydraulically controlled omnidirectional truck-mounted forklift

Abstract

This invention relates to the field of forklift technology, specifically to a hydraulic drive structure for a hydraulically controlled omnidirectional forklift. It includes a connecting seat for fixing to the forklift, a mast mounted on the connecting seat, a lifting rail on the inner side of the mast, and forks adapted to be mounted in the lifting rail. Each fork includes a lifting seat adapted to be mounted in the lifting rail, with two sets of fork bodies fixedly mounted on the lifting seat. A placement groove is formed on each fork body, and a telescopic plate is installed in the placement groove. A tilting hydraulic chamber is formed inside the telescopic plate, and a tilting piston is adapted to be mounted in the tilting hydraulic chamber to drive a toothed gear to rotate. The toothed gear meshes with a gear plate, allowing the tilting plate to tilt to its maximum extent from horizontal to vertical. The tilting hydraulic chamber is powered by a power assembly. Because the tilting plate is located at the front of the goods, and is in a horizontal state when loading, it protects the goods from slipping without affecting loading, thus improving safety.

Description

Technical Field

[0001] This invention relates to the field of forklift technology, and in particular to a hydraulic drive structure for a hydraulically controlled omnidirectional forklift. Background Technology

[0002] Hydraulic forklifts are commonly used material handling equipment, playing a vital role in logistics, warehousing, and manufacturing. They primarily utilize a hydraulic system to lift and move goods. A hydraulic pump converts mechanical energy into hydraulic energy, which is then converted back into mechanical energy by a hydraulic cylinder, propelling the forks up or down.

[0003] Chinese invention patent application number 201510718402.X provides a hydraulic omnidirectional four-wheel drive forklift, including a working device, a vehicle body structure, a drive system, a steering system, and a balance system. The working device is located at the front of the vehicle body structure, which consists of a frame and a cab, with the cab located at the top of the frame. The drive system is located at the bottom of the frame and is a four-wheel drive system consisting of four drive wheels. This hydraulic omnidirectional four-wheel drive forklift can control the independent steering of the four drive wheels through the steering system, greatly facilitating its use in 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 likely to slip off the forklift forks or tip over, causing damage to the goods and potentially injuring people in severe cases. Summary of the Invention

[0006] In view of this, the purpose of this invention is to propose a hydraulic drive structure for a hydraulically controlled omnidirectional forklift to solve the problem of goods easily slipping and tipping over during the forklift's emergency braking.

[0007] To achieve the above objectives, the present invention provides a hydraulic drive structure for a hydraulically controlled omnidirectional forklift, comprising a connecting seat for fixing to the forklift, a mast mounted on the connecting seat, a lifting rail provided on the inner side of the mast, forks adapted to be mounted in the lifting rail, the forks including a lifting seat adapted to be mounted in the lifting rail, two sets of fork bodies fixedly mounted on the lifting seat, a placement groove provided on the fork body, a telescopic plate installed in the placement groove, a tilting hydraulic chamber provided inside the telescopic plate, a tilting piston adapted to be mounted in the tilting hydraulic chamber, a gear plate connected to the tilting piston, a toothed gear meshing with the gear plate, a tilting shaft connected to the toothed gear, a connecting frame connected to the tilting shaft, a bearing connected to the end of the tilting shaft, the bearing installed on the top of the telescopic plate, a tilting plate integrally formed in the connecting frame, the toothed gear meshing with the gear plate to drive the tilting plate to tilt to the maximum extent from horizontal to vertical, and a power assembly connected to the tilting hydraulic chamber;

[0008] The power assembly includes a hydraulic tank fixedly mounted on a connecting seat. The hydraulic tank is connected to a hydraulic drive rod. A sprocket seat is connected to the top of the hydraulic drive rod. A sprocket is mounted on the sprocket seat. A chain is meshed on the sprocket. One end of the chain is fixedly connected to a lifting seat, and the other end is fixedly connected to a lifting connecting seat. The lifting connecting seat is fixedly mounted on the hydraulic tank. The lifting connecting seat is powered by a hydraulic distribution assembly, which controls the movement of the lifting connecting seat and converts the weight of the goods on the forks into driving force to drive the tilting piston to move.

[0009] Optionally, the front end of the placement slot is provided with two sets of limiting blocks, and an avoidance opening is provided between the two sets of limiting blocks for installing the flip plate and allowing the flip plate to perform a flipping action. The front end of the gear plate is connected to an abutment seat, which is used to abut against the limiting blocks to limit the position of the gear plate.

[0010] Optionally, the rear end of the fork placement slot is connected to a telescopic cavity, in which a telescopic spring rod is installed. The end of the telescopic spring rod is connected to a telescopic plate, which is partially fitted into the telescopic cavity. The telescopic spring rod is equipped with a force gauge to monitor the spring 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, a hydraulic push rod connected to the connecting plate, a hydraulic cylinder adapted to the hydraulic push rod, the hydraulic cylinder fixedly installed on the hydraulic tank, a diverter pipe connected to the hydraulic cylinder, the diverter pipe communicating with the tilting hydraulic chamber, and a regulating valve assembly installed in the hydraulic cylinder for controlling the opening and closing of the diverter pipe.

[0012] Optionally, the regulating valve assembly includes a valve body adapted to be installed in a hydraulic cylinder. The valve body has a central hole at its center and a flow divider port communicating with the central hole on its side. The flow divider port cooperates with a flow divider pipe. A guide block is installed around the valve body. A guide groove for the guide block to move is provided on the inner wall of the hydraulic cylinder. A threaded post is threaded in the central hole. A sealing plug is installed on the threaded post extending upward to seal the top of the hydraulic cylinder. A threaded rod is connected to the top of the threaded post. A jacking cavity is provided inside the threaded rod. The threaded post is movably installed in the jacking cavity. An elastic rod is installed between the threaded post and the inner wall of the jacking cavity. The threaded rod is powered by a motor to drive the threaded rod to rotate. A shut-off valve is provided on the flow divider pipe.

[0013] Optionally, a vertical limiting groove is provided inside the jacking 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 groove, limiting the threaded column to move up and down only within the jacking cavity.

[0014] Optionally, a fixed base is installed on the top of the hydraulic cylinder, and a motor base is connected to the fixed base. The motor base is fixedly installed on the hydraulic tank. The motor is powered by a drive gear, which meshes with a gear ring. The gear ring is fitted with a mounting sleeve, and the gear ring is rotatably installed in the mounting sleeve. A threaded hole is opened in the gear ring, and a threaded rod is fitted in the gear ring and locked by a nut.

[0015] Optionally, a rangefinder is installed on the lifting platform to detect the distance between the goods and the lifting platform.

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

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

[0018] The beneficial effects of this invention are as follows: A hydraulic drive structure for a hydraulically controlled omnidirectional forklift uses an oil pump to drive a hydraulic drive rod to rise, which in turn raises the sprocket, causing the chain to pull the forks upward. When the cargo reaches a certain height, the hydraulic distribution component releases the restriction on the lifting connector. Under the weight of the cargo, the chain pulls the lifting connector upward, providing driving force to the hydraulic distribution component. This, in turn, pumps oil into the tilting hydraulic chamber, driving the tilting piston. The tilting piston then drives the drive gear plate to mesh with the toothed gear, causing the tilting plate to tilt from a horizontal to a vertical position, protecting the front of the cargo. Afterward, the hydraulic distribution component re-restricts the lifting connector, and the hydraulic drive rod continues to rise, allowing the cargo to be lifted normally. Because the tilting plate is located at the front of the cargo and is horizontal during loading, it protects the cargo from slippage without affecting loading, thus improving safety. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only for this invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the hydraulic drive structure of a hydraulically controlled omnidirectional forklift according to an embodiment of the present invention. Figure 1 ;

[0021] Figure 2 This is a schematic diagram of the hydraulic drive structure of a hydraulically controlled omnidirectional forklift according to an embodiment of the present invention. Figure 2 ;

[0022] Figure 3This is a schematic diagram of the hydraulic drive structure fork of a hydraulically controlled omnidirectional forklift according to an embodiment of the present invention;

[0023] Figure 4 This is a cross-sectional view of the hydraulic drive structure forks of a hydraulically controlled omnidirectional forklift according to an embodiment of the present invention.

[0024] Figure 5 for Figure 4 A magnified view of part A in the middle;

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

[0026] Figure 7 This is a schematic diagram of the power component of a hydraulic drive structure for a hydraulically controlled omnidirectional forklift according to an embodiment of the present invention. Figure 1 ;

[0027] Figure 8 This is a schematic diagram of the power component of a hydraulic drive structure for a hydraulically controlled omnidirectional forklift according to an embodiment of the present invention. Figure 2 ;

[0028] Figure 9 for Figure 8 A magnified view of part B in the middle section;

[0029] Figure 10 This is a cross-sectional schematic diagram of the control valve assembly.

[0030] The diagram is marked as follows:

[0031] 101. Connecting seat; 102. Mast; 103. Lifting rail; 201. Forks; 202. Lifting seat; 203. Rangefinder; 204. Fork body; 205. Telescopic plate; 206. Tilting plate; 207. Shaft seat; 208. Tilting shaft; 209. Limiting block; 210. Placement slot; 211. Gear with missing tooth; 212. Connecting frame; 2041. Telescopic cavity; 2042. Telescopic spring rod; 2051. Tilting hydraulic cavity; 2052. Tilting piston; 2053. Gear plate; 2054. Abutment seat; 301. Power assembly; 302. Hydraulic tank; 303. 304. Drive rod; 305. Sprocket seat; 306. Sprocket; 307. Chain; 308. Lifting connecting seat; 309. Connecting plate; 310. Motor seat; 311. Fixed seat; 312. Hydraulic jack; 313. Hydraulic cylinder; 314. Diverter pipe; 315. Mounting sleeve; 316. Gear ring; 317. Threaded rod; 318. Motor; 319. Drive gear; 319. Valve body; 3191. Diverter port; 3192. Guide block; 320. Guide groove; 321. Sealing plug; 322. Threaded column; 323. Limiting block; 324. Limiting groove; 325. Elastic rod. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments.

[0033] It should be noted that, unless otherwise defined, the technical or scientific terms used in this invention should have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. The terms "first," "second," and similar terms used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only 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 drive structure for a hydraulically controlled omnidirectional forklift, including a connecting seat 101 for fixing on the forklift, a mast 102 mounted on the connecting seat 101, a lifting rail 103 provided on the inner side of the mast 102, and a fork 201 adapted to be installed in the lifting rail 103.

[0035] Forks 201 include a lifting base 202 adapted to be installed in the lifting rail 103. Two sets of fork bodies 204 are fixedly installed on the lifting base 202. The fork bodies 204 are provided with a placement groove 210. A telescopic plate 205 is installed in the placement groove 210. A tilting hydraulic chamber 2051 is provided inside the telescopic plate 205. A tilting piston 2052 is adapted to be installed in the tilting hydraulic chamber 2051. The tilting piston 2052 is connected to a gear plate 2053. The gear plate 2053 is engaged with a toothed part. Gear 211, the toothless gear 211 is connected to a flipping shaft 208, the flipping shaft 208 is connected to a connecting frame 212, the end of the flipping shaft 208 is connected to a bearing 207, the bearing 207 is installed on the top of the telescopic plate 205, the connecting frame 212 is integrally formed with a flipping plate 206, the toothless gear 211 is used to mesh with the gear plate 2053 for transmission, so that the flipping plate 206 can flip to the maximum extent from horizontal to vertical, and the flipping hydraulic chamber 2051 is powered by a power assembly 301;

[0036] The power assembly 301 includes a hydraulic tank 302 fixedly mounted on the connecting seat 101. The hydraulic tank 302 is connected to a hydraulic drive rod 303. The top end of the hydraulic drive rod 303 is connected to a sprocket seat 304. A sprocket 305 is mounted on the sprocket seat 304. A chain 306 is meshed 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 tank 302. The lifting connecting seat 307 is poweredly connected to a hydraulic distribution assembly, which is used to control the movement of the lifting connecting seat 307 and convert the weight of the goods on the forks 201 into driving force to drive the tilting piston 2052 to move.

[0037] When the forklift lifts goods, the hydraulic tank 302 supplies oil, and the oil pump drives the hydraulic drive rod 303 to rise, pushing the sprocket 305 to rise. This causes the chain 306 to pull the forks 201 upward, and the lifting seat 202 of the forks 201 rises along the lifting rail 103. At this time, the hydraulic distribution component controls the lifting connecting seat 307 to not move. When the goods rise to a certain height, the hydraulic distribution component releases the restriction on the lifting connecting seat 307, and under the weight of the goods, the chain 306 pulls the lifting seat 201 upward. The connecting seat 307 rises, thereby providing driving force to the hydraulic distribution assembly, which in turn pumps oil into the tilting hydraulic chamber 2051, driving the tilting piston 2052. Once driven, the tilting piston 2052 drives the drive gear plate 2053 to mesh with the toothed gear 211, causing the tilting plate 206 to tilt from a horizontal to a vertical position, protecting the front end of the goods. Afterwards, the hydraulic distribution assembly re-imposes the lifting connecting seat 307, and the hydraulic drive rod 303 continues to rise, allowing the goods to be lifted normally. Because the tilting plate 206 is located at the front end of the goods and is horizontal during loading, it protects the goods from slipping without affecting loading, thus improving safety.

[0038] In some optional specific embodiments, such as Figures 1 to 6 As shown, the placement groove 210 has two sets of limiting blocks 209 at its front end, with an clearance between the two sets of limiting blocks 209 for mounting the flip plate 206 and allowing the flip plate 206 to flip. The front end of the gear plate 2053 is connected to an abutment seat 2054, which abuts against the limiting blocks 209 to restrict 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 abutment seat 2054 abuts against the fibers of the limiting blocks 209, preventing the gear plate 2053 from protruding.

[0039] In some optional specific embodiments, such as Figures 1 to 6As shown, the rear end of the fork 204 placement slot 210 is connected to a telescopic cavity 2041. A telescopic spring rod 2042 is installed in the telescopic cavity 2041, and a telescopic plate 205 is connected to the end of the telescopic spring rod 2042. The telescopic plate 205 is partially fitted into the telescopic cavity 2041. A force gauge is installed on the telescopic spring rod 2042 to monitor the elastic force of the telescopic spring rod 2042 and is electrically connected to the hydraulic distribution assembly to control the movement of the lifting connecting seat 307. When the abutment seat 2054 of the gear plate 2053 abuts against the limit block 209, the telescopic plate 205 will retract, thereby squeezing the telescopic spring rod 2042. When the force gauge detects an increase in elastic force, it is determined that the flipping plate 206 has completed flipping, and the hydraulic distribution assembly controls the movement of the lifting connecting 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 connecting seat 307. The connecting plate 308 is connected to a hydraulic push rod 311, which is adapted to connect a hydraulic cylinder 312. The hydraulic cylinder 312 is fixedly installed on the hydraulic tank 302 and connected to a diversion pipe 313. The diversion pipe 313 communicates with the tilting hydraulic chamber 2051. A regulating valve assembly is installed in the hydraulic cylinder 312 to control the opening and closing of the diversion pipe 313. In use, when the diversion pipe 313 is closed, the lifting connecting seat 307 cannot rise under the hydraulic pressure in the hydraulic cylinder 312. When the diversion pipe 313 is opened, some hydraulic oil in the hydraulic cylinder 312 is forced into the diversion pipe 313 to drive the tilting plate 206 to tilt.

[0041] In some optional specific embodiments, such as Figure 9As shown, the regulating valve assembly includes a valve body 319 adapted to be installed in a hydraulic cylinder 312. A central hole is formed in the center of the valve body 319, and a flow divider 3191 communicating with the central hole is formed on the side of the valve body 319. The flow divider 3191 cooperates with a flow divider pipe 313. A guide block 3192 is installed around the valve body 319. A guide groove 320 for the guide block 3192 to move is formed on the inner wall of the hydraulic cylinder 312. A threaded post 322 is threadedly installed in the central hole. A sealing plug 321 is installed on the upward extension of the 322 to seal the top of the hydraulic cylinder 312. A threaded rod 316 is connected to the top of the threaded column 322. A jacking cavity is opened inside the threaded rod 316. The threaded column 322 is installed in the jacking cavity and can move 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 powered by a motor 317 to drive the threaded rod 316 to rotate. A shut-off valve is provided on the diversion pipe 313. In use, the motor 317 drives the threaded rod 316 to rotate, which in turn drives the threaded column 322 to rotate. The rotation of the threaded column 322 drives the valve body 319 to rotate. The rotation of the valve body 319 allows the central hole to connect with the diversion pipe 313 through the diversion port 3191, thereby enabling the pumping of fluid into the diversion pipe 313. After the pumping is completed, the shut-off valve closes, cutting off the diversion pipe 313. Then, the threaded column 322 continues to rotate. Due to the restriction of the guide block 3192 by the guide groove 320, the valve body 319 no longer rotates with the threaded column 322. The threaded column 322 moves upward, compressing 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 on the elastic rod 325. When the forklift is traveling, the vibration of the goods caused by bumps can be buffered by the elastic rod 325 and the hydraulic pressure in the hydraulic cylinder 312, thereby reducing vibration.

[0042] In some optional specific embodiments, such as Figure 9 As shown, a vertical limiting groove 324 is provided inside the jacking 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 move up and down only within the jacking cavity.

[0043] In some optional specific embodiments, such as Figures 7 to 10As shown, a fixed base 310 is mounted on the top of the hydraulic cylinder 312. The fixed base 310 is connected to a motor base 309, which is fixedly mounted on the hydraulic tank 302. The motor 317 is powered by a drive gear 318, which meshes with a gear ring 315. The gear ring 315 is fitted with a mounting sleeve 314, and is rotatably mounted in the mounting sleeve 314. A threaded hole is formed in the gear ring 315, and a threaded rod 316 is fitted into it and locked with a nut. In use, the drive gear 318 drives the gear ring 315 to rotate, thereby rotating the threaded rod 316, which in turn drives the threaded column 322 to rotate, thus 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 rangefinder 203 is installed on the lifting seat 202 to detect the distance between the goods and the lifting seat 202, ensuring that the goods are stably forked.

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

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

[0047] The working principle of this invention: When the forklift lifts the goods, the hydraulic tank 302 supplies oil, and the oil pump drives the hydraulic drive rod 303 to rise, pushing the sprocket 305 to rise, thereby causing the chain 306 to pull the forks 201 to rise. The lifting seat 202 of the forks 201 rises along the lifting rail 103. At this time, the hydraulic distribution component controls the lifting connecting seat 307 to not move. When the goods rise to a certain height, the hydraulic distribution component releases the restriction on the lifting connecting seat 307, and then, under the weight of the goods, the chain 306... Pulling the lifting connecting seat 307 upwards provides driving force to the hydraulic distribution component, which in turn pumps oil into the tilting hydraulic chamber 2051, thereby driving the tilting piston 2052. Once driven, the driving gear plate 2053 meshes with the toothed gear 211, causing the tilting plate 206 to tilt from a horizontal to a vertical position, protecting the front end of the goods. Afterwards, the hydraulic distribution component re-imposes the lifting connecting seat 307, and the hydraulic drive rod 303 continues to rise, allowing the goods to be lifted normally. Because the tilting plate 206 is located at the front end of the goods and is horizontal during loading, it protects the goods from slipping without affecting loading, thus improving safety.

[0048] In use, the motor 317 drives the threaded rod 316 to rotate, which in turn drives the threaded column 322 to rotate. The rotation of the threaded column 322 drives the valve body 319 to rotate. The rotation of the valve body 319 allows the central hole to connect with the diversion pipe 313 through the diversion port 3191, thereby enabling the pumping of fluid into the diversion pipe 313. After the pumping is completed, the shut-off valve closes, cutting off the diversion pipe 313. Then, the threaded column 322 continues to rotate. Due to the restriction of the guide block 3192 by the guide groove 320, the valve body 319 no longer rotates with the threaded column 322. The threaded column 322 moves upward, compressing 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 on the elastic rod 325. When the forklift is traveling, the vibration of the goods caused by bumps can be buffered by the elastic rod 325 and the hydraulic pressure in the hydraulic cylinder 312, thereby reducing vibration.

[0049] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the invention (including the claims) is limited to these examples; within the framework of the invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in the details for the sake of brevity.

[0050] This 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 this invention should be included within the scope of protection of this invention.

Claims

1. A hydraulic drive structure for a hydraulically controlled omnidirectional forklift, comprising a connecting seat (101) for fixing to the forklift, a mast (102) mounted on the connecting seat (101), a lifting rail (103) provided on the inner side of the mast (102), and forks (201) adapted to be mounted in the lifting rail (103), characterized in that, The forks (201) include 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 tilting hydraulic chamber (2051) is provided inside the telescopic plate (205). A tilting piston (2052) is adapted to be installed in the tilting hydraulic chamber (2051). The tilting piston (2052) is connected to a gear plate (2053). The gear plate (2053) is engaged with a notch. The gear (211) with missing teeth is connected to a flipping shaft (208), the flipping shaft (208) is connected to a connecting frame (212), the end of the flipping shaft (208) is connected to a bearing seat (207), the bearing seat (207) is installed on the top of the telescopic plate (205), the connecting frame (212) is integrally formed with a flipping plate (206), the gear (211) with missing teeth is used to mesh with the gear plate (2053) to drive the flipping plate (206) to flip to the maximum extent from horizontal to vertical, and the flipping hydraulic chamber (2051) is powered by a power assembly (301). The power assembly (301) includes a hydraulic tank (302) fixedly installed on the connecting seat (101). The hydraulic tank (302) is connected to a hydraulic drive rod (303). The top end of the hydraulic drive rod (303) is connected to a sprocket seat (304). A sprocket (305) is installed on the sprocket seat (304). A chain (306) is meshed 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 the lifting connecting seat (307). The lifting connecting seat (307) is fixedly installed on the hydraulic tank (302). The lifting connecting seat (307) is poweredly connected to a hydraulic distribution assembly, which is used to control the movement of the lifting connecting seat (307) and convert the weight of the goods on the forks (201) into driving force to drive the tilting piston (2052) to move. The hydraulic distribution assembly includes a connecting plate (308) fixedly connected to the lifting connecting seat (307), a hydraulic push rod (311) connected to the connecting plate (308), a hydraulic cylinder (312) adapted to the hydraulic push rod (311), the hydraulic cylinder (312) fixedly installed on the hydraulic box (302), the hydraulic cylinder (312) connected to a diversion pipe (313), the diversion pipe (313) communicating with the tilting hydraulic chamber (2051), and a regulating valve assembly installed in the hydraulic cylinder (312) for controlling the opening and closing of the diversion pipe (313).

2. The hydraulic drive structure of a hydraulically controlled omnidirectional forklift according to claim 1, characterized in that, The placement slot (210) has two sets of limiting blocks (209) at its front end, and a clearance is provided between the two sets of limiting blocks (209) for installing the flip plate (206) and for the flip plate (206) to perform a flipping action. The front end of the gear plate (2053) is connected to an abutment seat (2054), which is used to abut against the limiting blocks (209) to limit the position of the gear plate (2053).

3. The hydraulic drive structure of a hydraulically controlled omnidirectional forklift according to claim 2, characterized in that, The rear end of the fork (204) placement slot (210) is connected to a telescopic cavity (2041). A telescopic spring rod (2042) is installed in the telescopic cavity (2041). A telescopic plate (205) is connected to the end of the telescopic spring rod (2042). The telescopic plate (205) is partially fitted into the telescopic cavity (2041). A force gauge is installed on the telescopic spring rod (2042) to monitor the elastic force of the telescopic spring rod (2042) and is electrically connected to the hydraulic distribution component to control the movement of the lifting connecting seat (307).

4. The hydraulic drive structure of a hydraulically controlled omnidirectional forklift according to claim 1, characterized in that, The regulating valve assembly includes a valve body (319) adapted to be installed in a hydraulic cylinder (312). A central hole is provided in the center of the valve body (319), and a flow divider (3191) communicating with the central hole is provided on the side of the valve body (319). The flow divider (3191) cooperates with a flow divider pipe (313). A guide block (3192) is installed around 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 post (322) is threadedly installed in the central hole. 322) A sealing plug (321) is installed extending upwards to seal the top of the hydraulic cylinder (312). The top of the threaded column (322) is connected to a threaded rod (316). The threaded rod (316) has a jacking cavity inside. The threaded column (322) is installed in the jacking cavity and can move 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 powered by a motor (317) to drive the threaded rod (316) to rotate. A shut-off valve is provided on the diversion pipe (313).

5. The hydraulic drive structure of a hydraulically controlled omnidirectional forklift according to claim 4, characterized in that, The jacking cavity has a vertical limiting groove (324) inside. The threaded column (322) has a limiting block (323) integrally formed on both sides. The limiting block (323) is adapted to be installed in the limiting groove (324), limiting the threaded column (322) to only move up and down in the jacking cavity.

6. The hydraulic drive structure of a hydraulically controlled omnidirectional forklift according to claim 5, characterized in that, The top of the hydraulic cylinder (312) is equipped with a fixed seat (310), and the fixed seat (310) is connected to a motor seat (309). The motor seat (309) is fixedly installed on the hydraulic tank (302). The motor (317) is powered by a drive gear (318). The drive gear (318) is meshed with a gear ring (315). The gear ring (315) is adapted to be connected to an 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). A threaded rod (316) is adapted to be installed in the gear ring (315) and locked by a nut.

7. The hydraulic drive structure of a hydraulically controlled omnidirectional forklift according to claim 1, characterized in that, A distance measuring instrument (203) is installed on the lifting platform (202) to detect the distance between the goods and the lifting platform (202).

8. The hydraulic drive structure of a hydraulically controlled omnidirectional forklift according to claim 1, characterized in that, The upper surface of the fork (204) is provided with anti-slip texture.

9. The hydraulic drive structure of a hydraulically controlled omnidirectional forklift according to claim 1, characterized in that, The top of the gantry (102) is equipped with a distance sensor to detect the height of the sprocket (305) and place the sprocket (305) in contact with the gantry (102).

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