Four-way vehicle power module integrated hydraulic unit

Abstract

The invention provides a four-way vehicle power module integrated hydraulic unit which comprises a four-way vehicle, a limiting assembly and a clamping assembly, the four-way vehicle comprises a vehicle frame, jacking plates, a climbing assembly and a climbing guide rail, and the jacking plates are arranged on the left side and the right side of the upper portion of the vehicle frame. Compared with the prior art, the four-way vehicle has the following beneficial effects that by arranging the four-way vehicle and the limiting assembly, when layers need to be changed in a warehouse, the lifting oil cylinder drives the climbing assembly to achieve secondary movement, the left moving wheel and the right moving wheel drive into the climbing guide rail to complete movement between the double-layer warehouse frames, and layer changing movement of the four-way vehicle does not need an elevator; according to the technical scheme, the four-way vehicle is arranged, the four-way vehicle is matched with the track, the limiting assemblies are located at the two ends for clamping in the layer changing process, limiting stability in the layer changing process is kept, and therefore the goods discharging efficiency can be improved, the four-way vehicle, the limiting assemblies and the wrapping and clamping assemblies are arranged, clamping of borne goods is achieved through the wrapping and clamping assemblies, and therefore goods discharging can be assisted.

Description

Technical Field

[0001] This invention belongs to the field of 3DRGV four-way vehicles, and specifically relates to an integrated hydraulic unit for a four-way vehicle power module. Background Technology

[0002] 3DRGV four-way carts are core intelligent handling equipment in automated storage and retrieval systems (AS / RS). They can move horizontally in four directions (forward, backward, left, and right) within the racking tracks and, in conjunction with elevators, achieve vertical layer changes, thus flexibly storing and retrieving goods in three-dimensional space (3D). Currently, hydraulic four-way carts on the market are composed of hydraulic cylinders, stainless steel oil pipes, rubber oil pipes, oil tanks, motors, hydraulic control modules, and a cart body travel module. In existing technology, when a four-way cart needs to change layers from one level to the next, it must enter the elevator for layer change. When there are few goods and the operating rate is low, the elevator can meet the layer change needs of the four-way carts. However, when there are many goods and high-efficiency operation is required to meet the needs of efficient delivery, the layer change of the first group of four-way carts will occupy the elevator, and the subsequent group of four-way carts may need to wait during the layer change process. This waiting time will accumulate as the number of four-way carts and the number of layer changes increases, thus affecting the delivery efficiency.

[0003] In summary, we hope to propose a new structure to solve the aforementioned technical problems. Summary of the Invention

[0004] To address the shortcomings of existing technologies, the present invention aims to provide an integrated hydraulic unit for a four-way vehicle power module, thereby resolving the problems mentioned in the background section.

[0005] This invention is achieved through the following technical solution: an integrated hydraulic unit for a four-way vehicle power module, comprising: a four-way vehicle, a limiting component and a clamping component, wherein the four-way vehicle includes a vehicle frame, a lifting plate, a climbing component and a climbing guide rail, and the lifting plate is disposed on the left and right sides above the vehicle frame; The climbing assembly is located on the left and right sides of the vehicle frame in the front-rear direction. The climbing assembly includes left and right moving wheels. The climbing guide rail is located below the left and right moving wheels. The limiting assembly is located at the four corners of the vehicle frame. The clamping assembly is located below the lifting plate.

[0006] As a preferred embodiment, a hydraulic system is provided inside the vehicle frame. The hydraulic system includes a hydraulic cylinder, a hydraulic plate, a hydraulic oil circuit and an oil tank. The hydraulic plate is arranged on the left and right sides of the overall structure of the hydraulic system. The hydraulic cylinders are located on the front and rear sides of the hydraulic plate, and the hydraulic oil circuits are opened inside the hydraulic plate to realize the internal oil flow so that there are no external connecting oil pipes. The oil tank is located between the left and right sets of hydraulic plates.

[0007] The four-way vehicle uses aluminum materials, and the path for conveying hydraulic oil is centrally located inside the hydraulic plate. The hydraulic oil is guided to the four sets of hydraulic cylinders inside the hydraulic plate. There are no external oil pipes. The aluminum material has good heat dissipation, which effectively solves the problems of oil temperature rise during long-term operation, which leads to a decrease in hydraulic oil viscosity and leakage. The piping is neat, strong and reliable.

[0008] As a preferred embodiment, the vehicle frame is provided with a set of front and rear moving components on both the left and right sides. The vehicle frame is provided with grooves through the left and right moving wheel positions on both the front and rear sides. Two symmetrically arranged connecting seats are provided inside the grooves. A rotary torsion spring is fixedly connected to the side of the connecting pivot away from the center of the groove. An annular groove is opened on the side of the connecting pivot away from the center of the groove. Five sets of support wheels are connected to the inner side of the annular groove in a movable fitting structure. A support column is provided on the side of the support wheel away from the connecting pivot. The connecting rotating seat is a rotating structure. The limiting component is located between the left and right connecting rotating seats and is fixed by bolts. The limiting component includes a limiting frame, a tension seat, a rotating seat, a pull rope, a wheel frame, and a limiting wheel.

[0009] In a preferred embodiment, the tension seat is disposed on the inner side of one end of the limiting frame, the rotating seat is disposed on the inner side of the tension seat, the pull rope is disposed on the outer end of the rotating seat, and the wheel frame is disposed on the other end of the limiting frame. The limiting wheel is located on the inner side of the wheel frame and is connected to the rotating structure. The limiting wheel is provided in several sets and has a double row structure. A spring damping shock absorber is fixedly connected to the end of the wheel frame away from the limiting wheel. A guide wheel is rotatably connected at the position where the pull rope contacts the limiting frame. The upper end of the pull rope is bent and wrapped around the outside of the guide wheel. The guide wheel is located on the other side of the pull rope and is connected to a release wheel frame. The release wheel frame consists of a spring damping shock absorber and a wheel frame. One end of the limiting frame is fixedly connected to a plug and is inserted into the connecting rotatable seat and then fixed by bolts.

[0010] During the climbing and layer-changing process of the four-way vehicle, the climbing component extends to the second stage through the two-stage lifting structure, and the limiting component is rotated to the side of the climbing guide rail through the linkage structure. The limiting components set on both sides of the climbing guide rail at both ends complete the climbing clamping and limiting, maintain the stability during the climbing process, prevent derailment during the climbing process, and achieve good use of the four-way vehicle for layer changing.

[0011] In a preferred embodiment, the climbing assembly further includes a drive shaft, a rotating frame, a linear rack, a first drive gear, a second drive gear, a rope pulley, and a climbing groove, with the drive shaft positioned between the front and rear sets of left and right moving wheels; A rotating frame is sleeved on the outside of the drive shaft via a bearing. The linear rack is positioned above the rotating frame. The first drive gear is positioned above the side away from the linear rack, and the second drive gear is positioned to one side of the first drive gear. The rope wheel and the second transmission gear are connected coaxially to achieve synchronous rotation. The climbing groove is opened on the outer side of the left and right moving wheels and several of them are provided. The climbing groove cooperates with the climbing guide rail to realize the layer changing. The climbing guide rail is an inclined structure set to connect the upper and lower warehouse shelves. The linear rack also meshes with the first transmission gear. A third transmission gear is also provided on the coaxial part of the first transmission gear. The third transmission gear meshes with the second transmission gear. The transmission ratio of the third transmission gear to the first transmission gear and the second transmission gear is 3:1. The other end of the pull rope is wound and connected to the rope wheel. The climbing component has a structure that extends and retracts in two sections along the axial direction. The climbing component achieves two-stage lifting adjustment through a lifting cylinder. The lifting cylinder achieves oil input and output through a hydraulic system. The cylinder body of the lifting cylinder is fixed to the vehicle frame. The end of the telescopic rod is connected to the rotating frame. The two-stage lifting of the climbing component is achieved through extension and retraction. The outer side of the drive shaft is also provided with forward teeth and reverse teeth. Each of the forward teeth and reverse teeth is respectively engaged with a ratchet tooth. A linkage rod is fixedly connected to the outer side of the ratchet tooth, and a linkage push plate is connected to the other end of the linkage rod. A linkage spring is connected to the other side of the linkage push plate. The linkage push plate compresses the internal hydraulic oil during movement and guides it through the oil guide pipe at the other end. The other end of the oil guide pipe is connected to the switching cylinder. The extension end of the switching cylinder is switched by the hydraulic oil squeezing the plunger and is connected to both sides of the plunger through two sets of oil guide pipes.

[0012] In a preferred embodiment, a ratchet tooth is fixedly connected to the outer side of the drive shaft at the rotating frame, and a ratchet tooth is rotatably connected to both the left and right sides of the rotating frame. The ratchet tooth has a two-tooth structure and meshes with the ratchet tooth. The inner side of the rotating frame is also provided with a rotating plate. The rotating plate is rotatably connected to the side of the left and right moving wheels. An adjusting seat is meshed above the adjusting gear. An adjusting tooth is fixedly connected to the adjusting seat on the opposite side of the adjusting gear. The adjusting teeth mesh with the adjusting gear, and an adjusting block is coaxially connected to the adjusting gear on the other side of the rotating plate to switch the meshing state of the two sets of ratchet teeth and ratchet teeth. The adjusting seat achieves linear switching movement via a switching cylinder.

[0013] In the climbing and layer-changing process of the four-way vehicle, the climbing grooves of the left and right moving wheels are engaged with the climbing guide rails to provide engagement support during the climbing process. During the climbing process, the ratchet teeth and ratchet locking teeth are engaged, which can only realize unidirectional movement for layer changing. The engagement of the ratchet teeth and ratchet locking teeth will block the reverse rotation of the left and right moving wheels, further assisting the climbing and layer-changing of the four-way vehicle.

[0014] As a preferred embodiment, a reversing wheel is provided under the lifting plate on both the front and rear sides of the vehicle frame, and an adjustment groove is provided at the front and rear positions on both the left and right sides of the vehicle frame, with an adjustment cylinder fixedly connected to the inner side of the adjustment groove. The telescopic end of the regulating cylinder is connected to an adjusting connecting seat, and the adjusting connecting seat and the adjusting slide groove are movably engaged with each other. The clamping assembly includes a main frame, a tension rod, a second pull rope, a clamping connecting rod, and a clamping frame. The tension rod is movably disposed inside the main frame. The second pull rope is located on one side near the lifting plate, the clamping connecting rod is located on the other side of the tension rod, the clamping frame is located on the other side of the clamping connecting rod, a return spring is sleeved on the outer side of the tension rod, and an adjusting rod is movably fitted on the inner side of the tension rod. The outer side of the adjusting rod is provided with several sets of linearly and equally distributed adjusting holes. The distance between two adjacent sets of adjusting holes is 3mm. One end of the pull rope is fixedly connected to one side of the adjusting rod and the other end is fixedly connected to the bottom of the lifting plate. The upper part of the tension rod is threaded with the adjusting hole and a positioning stud is provided. The clamping frame is fixedly connected to one side of the cargo with a rubber plate. The clamping frame is rotatably connected to the main frame. A rotating seat is provided on both sides of the clamping connecting rod. A tension seat is provided at one end of the clamping frame near the main frame. The adjusting cylinder realizes oil input and output through a hydraulic system.

[0015] During the lifting process, the linkage drives the clamping frame to a vertical structure, so that the two sets of clamping frames are located on both sides of the upper supporting goods. The clamping frames are set in the left and right moving direction, which can not only maintain the position of the goods in single-layer moving transportation, but also prevent the goods from slipping due to the tilted structure during the layer changing process, thus assisting in the use of delivery.

[0016] After adopting the above technical solution, the beneficial effects of the present invention are: By setting up a four-way vehicle and limiting components, when changing layers in the warehouse, the lifting cylinder drives the climbing component to achieve two-stage movement. The left and right moving wheels drive into the climbing guide rail to complete the movement between the two layers of warehouse shelves. The layer-changing movement of the four-way vehicle does not require the setting of a lifting machine. It can be achieved by only the four-way vehicle and the track. Moreover, during the layer-changing, the limiting components are located at both ends to keep the limit stable during the layer-changing, thereby improving the shipping efficiency.

[0017] By setting up a four-way vehicle, a limiting component, and a clamping component, the lifting plate is raised, which in turn drives the clamping frame to a vertical structure. This places the two sets of clamping frames on both sides of the cargo above, and the clamping frames are set in the left and right movement direction. This not only keeps the cargo position in single-layer mobile transportation, but also prevents the cargo from slipping due to the tilted structure during the layer change process, thus assisting in the delivery. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present 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 some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of an integrated hydraulic unit for a four-way vehicle power module according to the present invention.

[0020] Figure 2 This is a schematic diagram of the structure of the four-way vehicle in the integrated hydraulic unit of the four-way vehicle power module of the present invention.

[0021] Figure 3 for Figure 2 Enlarged view of point A in the middle.

[0022] Figure 4 This is a schematic diagram of the structure of a four-way vehicle power module integrated hydraulic unit of the present invention, which removes the lifting plate.

[0023] Figure 5 This is a schematic diagram of the upper side of the climbing component in the integrated hydraulic unit of a four-way vehicle power module of the present invention.

[0024] Figure 6 for Figure 5 Enlarged view of section B in the middle.

[0025] Figure 7 This is a schematic diagram of the structure of the lower side of the climbing component in the integrated hydraulic unit of the four-way vehicle power module of the present invention.

[0026] Figure 8 for Figure 7 Enlarged view of point C.

[0027] Figure 9 This is a schematic diagram of the structure of the inner end of the climbing component in the integrated hydraulic unit of the four-way vehicle power module of the present invention.

[0028] Figure 10 for Figure 9 A partial sectional view.

[0029] Figure 11 This is a schematic diagram of the structure of the outer end of the limiting component in the integrated hydraulic unit of the four-way vehicle power module of the present invention.

[0030] Figure 12 This is a schematic diagram of the structure of the inner end of the limiting component in the integrated hydraulic unit of the four-way vehicle power module of the present invention.

[0031] Figure 13 This is a schematic diagram of the clamping component in an integrated hydraulic unit for a four-way vehicle power module according to the present invention.

[0032] Figure 14 This is a partial cross-sectional schematic diagram of the clamping component in the integrated hydraulic unit of a four-way vehicle power module according to the present invention.

[0033] Figure 15 This is a schematic diagram of the hydraulic system in an integrated hydraulic unit for a four-way vehicle power module according to the present invention.

[0034] In the diagram, 100-four-way vehicle, 101-vehicle frame, 102-lifting plate, 103-front and rear moving assembly, 104-climbing assembly, 105-reversing wheel, 106-adjusting slide, 107-adjusting cylinder, 108-adjusting connecting seat, 109-climbing guide rail, 110-rotation torsion spring, 111-connecting pivot, 112-ring groove, 113-support column, 114-hydraulic cylinder, 115-hydraulic plate, 116-hydraulic circuit; Limiting component, 201-insertion block, 202-limiting frame, 203-tension seat one, 204-rotating seat one, 205-pull rope one, 206-guide wheel one, 207-guide wheel two, 208-slow-release wheel frame, 209-spring damping shock absorber, 210-wheel frame, 211-limiting wheel; Clamping assembly, 301-main frame, 302-tension rod, 303-reset spring, 304-adjusting rod, 305-adjusting hole, 306-positioning stud, 307-pull rope II, 308-rotating seat II, 309-clamping connecting rod, 310-tension seat II, 311-clamping frame; 104a - Left and right moving wheel, 104b - Drive shaft, 104c - Rotating frame, 104d - Linear rack, 104e - Switching cylinder, 104f - Adjusting seat, 104g - Adjusting gear, 104h - Rotating plate, 104i - Adjusting gear, 104j - Adjusting lever, 104k - Ratchet teeth, 104l - Ratchet teeth, 104m - First transmission gear, 104n - Second transmission gear, 104o - Rope wheel, 104p - Climbing groove, 104q - Forward gear, 104r - Reverse gear, 104s - Ratchet teeth, 104t - Linkage rod, 104u - Linkage push plate, 104v - Linkage spring, 104w - Oil guide pipe, 104x - Third transmission gear. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] Please see Figures 1-15 The present invention provides a technical solution: the present invention enables the four-way vehicle 100 to complete driving and limiting simultaneously during the climbing process by linking the climbing component 104 and the limiting component 200. Compared with the existing solution that relies on the hoist for changing layers, the equipment configuration is reduced and the system complexity is reduced. Through the ratchet one-way locking structure, the four-way vehicle 100 achieves anti-slip self-locking on the inclined guide rail, avoiding the need for an additional braking mechanism, thereby achieving a synergistic improvement in the safety and efficiency of changing layers under the premise of compact structure. An integrated hydraulic unit for a four-way vehicle power module includes: a four-way vehicle 100, a limiting component 200 and a clamping component 300. The four-way vehicle 100 includes a vehicle frame 101, a lifting plate 102, a climbing component 104 and a climbing guide rail 109. The lifting plate 102 is disposed on the left and right sides above the vehicle frame 101. The climbing assembly 104 is located on the left and right sides of the vehicle frame 101 in the front and rear directions. The climbing assembly 104 includes left and right moving wheels 104a, climbing guide rails 109 are located below the left and right moving wheels 104a, limiting components 200 are located at the four corners of the vehicle frame 101, and clamping components 300 are located below the lifting plate 102.

[0037] Please see Figures 1-12 and Figure 15 Example 1: A hydraulic system is provided inside the frame 101. The hydraulic system includes a hydraulic cylinder 114, a hydraulic plate 115, a hydraulic oil circuit 116 and an oil tank. The hydraulic plate 115 is located on the left and right sides of the overall structure of the hydraulic system. Hydraulic cylinders 114 are located on the front and rear sides of hydraulic plate 115. Hydraulic oil circuits 116 are opened inside hydraulic plate 115 to realize internal oil delivery so that there are no external connecting oil pipes. Oil tank is located between the left and right sets of hydraulic plates 115.

[0038] The four-way vehicle 100 uses aluminum material. The path for conveying hydraulic oil is centrally located inside the hydraulic plate 115, and the hydraulic oil is guided to the four sets of hydraulic cylinders 114 inside the hydraulic plate 115. There are no external oil pipes. The aluminum material has good heat dissipation, which effectively solves the problems of long-term working oil temperature rise, which leads to a decrease in hydraulic oil viscosity and leakage. The pipe routing is neat, firm and reliable.

[0039] The left and right sides of the vehicle frame 101 are also provided with a set of front and rear moving components 103. The front and rear sides of the vehicle frame 101 are provided with grooves through the left and right moving wheel 104a. Two symmetrically arranged connecting seats 111 are provided inside the grooves. A rotary torsion spring 110 is fixedly connected to the side of the connecting pivot 111 away from the center of the groove. An annular groove 112 is provided on the side of the connecting pivot 111 away from the center of the groove. Five sets of support wheels are connected to the inner side of the annular groove 112 in a movable fitting structure. A support column 113 is provided on the side of the support wheel away from the connecting pivot 111. The connecting rotating seat 111 is a rotating structure. The limiting component 200 is located between the left and right connecting rotating seats 111 and is fixed by bolts. The limiting component 200 includes a limiting frame 202, a tension seat 203, a rotating seat 204, a pull rope 205, a wheel frame 210, and a limiting wheel 211.

[0040] Tension seat 203 is located inside one end of limit frame 202, rotating seat 204 is located inside tension seat 203, pull rope 205 is located at the outer end of rotating seat 204, and wheel frame 210 is located at the other end of limit frame 202. The limiting wheel 211 is located inside the wheel frame 210 and is connected to the rotating structure. The limiting wheel 211 is provided in several sets and has a double row structure. A spring damping shock absorber 209 is fixedly connected to the end of the wheel frame 210 away from the limiting wheel 211. A guide wheel 206 is rotatably connected at the position where the pull rope 205 contacts the limiting frame 202. The upper bend of the pull rope 205 is also wrapped around the outside of the guide wheel 207. The guide wheel 207 is located on the other side of the pull rope 205 and is connected to the release wheel frame 208. The release wheel frame 208 is composed of the spring damping shock absorber 2 and the wheel frame 2. One end of the limit frame 202 is fixedly connected to the plug 201 and is inserted into the connecting rotator 111 and then fixed by bolts.

[0041] During the climbing and layer-changing process of the four-way vehicle 100, the climbing component 104 extends to the second stage through the two-stage lifting structure, and the limiting component 200 is rotated to the side of the climbing guide rail 109 through the linkage structure. The limiting components 200 located on both sides of the climbing guide rail 109 at both ends complete the climbing clamping and limiting, maintain the stability during the climbing process, prevent derailment during the climbing process, and achieve good use of the four-way vehicle for layer changing.

[0042] The climbing assembly 104 also includes a drive shaft 104b, a rotating frame 104c, a linear rack 104d, a first drive gear 104m, a second drive gear 104n, a rope wheel 104o, and a climbing groove 104p. The drive shaft 104b is located between the front and rear sets of left and right moving wheels 104a. A rotating frame 104c is sleeved on the outside of the drive shaft 104b via a bearing. A linear rack 104d is positioned above the rotating frame 104c. A first drive gear 104m is positioned above the side away from the linear rack 104d. A second drive gear 104n is positioned to the side of the first drive gear 104m. The rope pulley 104o and the second transmission gear 104n are connected coaxially to achieve synchronous rotation. The climbing groove 104p is opened on the outer side of the left and right moving wheels 104a and several are provided. The climbing groove 104p cooperates with the climbing guide rail 109 to realize the layer changing. The climbing guide rail 109 is an inclined structure set to connect the upper and lower warehouse shelves. The linear rack 104d also meshes with the first transmission gear 104m. The first transmission gear 104m is coaxial with a third transmission gear 104x. The third transmission gear 104x meshes with the second transmission gear 104n. The transmission ratio of the third transmission gear 104x to the first transmission gear 104m and the second transmission gear 104n is 3:1. The other end of the pull rope 205 is wound and connected to the rope wheel 104o. The climbing component 104 has a structure that extends and retracts in two sections along the axial direction. The climbing component 104 achieves two-stage lifting adjustment through the lifting cylinder. The lifting cylinder achieves oil input and output through the hydraulic system. The cylinder body of the lifting cylinder is fixed to the vehicle frame 101. The end of the telescopic rod is connected to the rotating frame 104c. The two-stage lifting of the climbing component 104 is achieved through extension and retraction. The outer side of the drive shaft 104b is also provided with a forward tooth 104q and a reverse tooth 104r. The outer sides of the forward tooth 104q and the reverse tooth 104r are respectively meshed with a ratchet tooth 104s. A linkage rod 104t is fixedly connected to the outer side of the ratchet tooth 104s. The other end of the linkage rod 104t is connected to a linkage push plate 104u. The other side of the linkage push plate 104u is connected to the linkage spring 104v. When the linkage push plate 104u moves, it compresses the internal hydraulic oil and guides it through the oil guide pipe 104w set at the other end. The other end of the oil guide pipe 104w is connected to the switching cylinder 104e. The extension end of the switching cylinder 104e is switched and moved by the hydraulic oil squeezing the plunger, and is connected to both sides of the plunger through the two sets of oil guide pipes 104w.

[0043] A ratchet tooth 104l is fixedly connected to the outer side of the drive shaft 104b at the rotating frame 104c. A ratchet tooth 104k is rotatably connected to both the left and right sides of the rotating frame 104c. The ratchet tooth 104k has a two-tooth structure and meshes with the ratchet tooth 104l. A rotating plate 104h is also provided inside the rotating frame 104c. The rotating plate 104h is rotatably connected to the adjusting gear 104i on the side of the left and right moving wheel 104a. An adjusting seat 104f is meshed above the adjusting gear 104i. An adjusting tooth 104g is fixedly connected to the side opposite to the adjusting gear 104i on the adjusting seat 104f. The adjusting tooth 104g meshes with the adjusting gear 104i. The other side of the rotating plate 104h is coaxially connected with the adjusting gear 104i and is equipped with an adjusting block 104j for switching the meshing state of the two sets of ratchet teeth 104k and ratchet teeth 104l. The adjusting seat 104f achieves linear switching movement via the switching cylinder 104e.

[0044] In the climbing and layer-changing process of the four-way vehicle 100, the climbing grooves 104p of the left and right moving wheels are engaged with the climbing guide rail 109 to provide engagement support during the climbing process. During the climbing process, the ratchet teeth 104l and ratchet locking teeth 104k are engaged, which can only realize unidirectional movement for layer changing. The engagement of the ratchet teeth 104l and ratchet locking teeth 104k will block the reverse rotation of the left and right moving wheels 104a, further assisting the climbing and layer-changing of the four-way vehicle 100.

[0045] Specifically, the four-way vehicle 100 has an integrated hydraulic system. During use, oil is supplied through an oil tank. The hydraulic oil circuit 116 is located inside the hydraulic plate 115. There are no external oil pipes or interfaces in the different hydraulic oil circuits 116. The hydraulic cylinders 114 located at the four corners are synchronously controlled through the internal hydraulic oil circuits 116. This not only solves the space requirements of traditional structures and overcomes the phenomenon of messy oil pipes in traditional hydraulic units, but also makes installation convenient, the pipe routing neat, and the system secure and reliable. In addition, the aluminum material has good heat dissipation, which effectively solves the problems of long-term working oil temperature rise, which leads to a decrease in hydraulic oil viscosity and leakage. Secondly, during the movement within the same layer, the forward and backward movement component 103 achieves forward and backward movement. Before switching to left and right movement, the hydraulic system controls the lifting cylinder to complete the first extension of the climbing component 104, so that the climbing component 104 is in contact with the track. The left and right moving wheels 104a complete the left and right movement. When moving to the cargo area, the hydraulic cylinder 114 lifts the lifting plate 102 to lift the cargo. The warehouse has a multi-layer structure, and the four-way cart 100 needs to move between different layers during the shipping process. In the prior art, the four-way cart 100 needs to enter the hoist station to change layers. However, when the four-way cart 100 needs to meet the requirements of fast and efficient shipping, there will be a situation where the previous group of four-way carts 100 is using the hoist, and the next group of four-way carts 100 needs to wait before changing layers. There will also be situations where the hoist runs back and forth, all of which will result in a long waiting time. This invention does not use a separate hoist, but instead uses a climbing guide rail 109 connecting the upper and lower layers. The climbing guide rail 109 is inclined. Before climbing to a new layer, the hydraulic system controls the lifting cylinder to extend the climbing assembly 104 in two stages. At this time, the distance between the bottom of the left and right moving wheels 104a on their outer side and the vehicle frame 101 is large, preventing interference between the four-way vehicle 100 and the climbing guide rail 109 during the inclined climbing process. During the climbing to a new layer, the climbing grooves 104p on the outer side of the left and right moving wheels 104a engage with the climbing guide rail 109. The two work together to assist the four-way vehicle 100 in climbing and changing layers. The forward and reverse rotation of the left and right moving wheels 104a in different directions causes the switching cylinder 104e to drive the adjusting seat 104f to move left and right. (The forward and reverse rotation of the drive shaft 104b will cause the forward gear 104q and the reverse gear 104r to contact the corresponding ratchet teeth 104s, applying pressure to make them move. The forward gear 104q and the reverse gear 104r force the ratchet teeth 104s to compress and move to the end. After the forward gear 104q and the reverse gear 104r continue to rotate, they will form a circular rotation and continuously form pressure on the ratchet teeth 104s.) The compression positioning, the linkage push plate 104u compresses the hydraulic oil in the hydraulic cavity during the movement, and the hydraulic oil is transmitted to one side of the switching cylinder 104e through the oil guide pipe 104w. At the same time, the hydraulic oil on the other side returns to the oil tank through the return channel, forming a closed-loop drive. The switching cylinder 104e is a double-acting hydraulic cylinder. Its plunger achieves reciprocating linear movement under the action of the pressure difference of the hydraulic oil on both sides, thereby driving the adjusting seat 104f to switch positions. And through the adjusting gear 104g, it meshes with the adjusting gear 104i to drive the adjusting gear 104i to rotate, and then synchronously drives the adjusting block 104j to rotate, so that the adjusting block 104j presses the two sets of ratchet. One set of ratchet teeth 104k is designed to prevent it from engaging with ratchet teeth 104l, while the other set of ratchet teeth 104k can engage with ratchet teeth 104l during unidirectional rotation (the ratchet teeth 104k that block reverse movement are in a cyclical engagement-disengagement state during forward movement, which is assisted by a helical spring, while during reverse movement, the engaged ratchet teeth 104k hold it against it to prevent reverse rotation), blocking the reverse rotation of drive shaft 104b, so that drive shaft 104b can only achieve unidirectional rotation, thereby preventing the four-way vehicle 100 from sliding due to reverse rotation during uphill and layer-changing, further assisting in uphill and layer-changing use; During the secondary extension of the climbing assembly 104, the linear rack 104d enters the area in contact with the first transmission gear 104m. The linear rack 104d meshes with the first transmission gear 104m, thereby driving the first transmission gear 104m to mesh. The first transmission gear 104m meshes with the second transmission gear 104n, synchronously driving the second transmission gear 104n to rotate. The rotation of the second transmission gear 104n synchronously drives the rope wheel 104o to rotate, thereby pulling the pull rope 205 to move. This causes the other end of the pull rope 205 to pull the tension seat 203 to move. The movement of the pull rope 205 is guided by the guide wheel 206 and the guide wheel 207, causing the limiting assembly 200 to rotate around the axis of its connecting rotating seat 111 (the connecting rotating seat 111 is in...). During the rotation of the axis, five sets of support wheels evenly distributed in a circle are connected and movably fitted in the annular groove 112, and the support column 113 provides reinforcement support, improving the stability and limiting strength of the connecting turntable 111. This allows the limiting frame 202 to complete a 180° rotation, so that the limiting wheel 211 faces the outer end of the climbing guide rail 109 and fits against the climbing guide rail 109. This ensures that the four-way vehicle 100 maintains its relative position during the climbing and layer-changing process. The spring damping shock absorber 209 provides slight relief for the unevenness of the outer side of the climbing guide rail 109. When the layer-changing is completed, the climbing component 104 returns to its original position, causing the rope wheel 104 to rotate in the opposite direction, and the torsion spring 110 drives the limiting frame 202 to rotate in the opposite direction. The four-way vehicle 100 can change layers simply by relying on its own structure and cooperating with the climbing guide 109 (the climbing guide 109 has an inclination angle of 15° to 30°. Under rated load conditions, it can achieve one-way self-locking by cooperating with the ratchet teeth 104l and ratchet locking teeth 104k to prevent reverse slippage). Therefore, there is no waiting situation for the four-way vehicle 100. Different four-way vehicles 100 can change layers at different climbing guides 109. And vehicles located at the same set of climbing guides 109 can quickly change layers by passing through them in sequence, thereby improving the delivery efficiency.

[0046] Please see Figures 1-2 and Figures 13-14 Example 2: The vehicle frame 101 has reversing wheels 105 under the lifting plates 102 on both the front and rear sides. The vehicle frame 101 has adjusting grooves 106 at the front and rear positions on both the left and right sides. Adjusting cylinders 107 are fixedly connected to the inner side of the adjusting grooves 106. The telescopic end of the adjusting cylinder 107 is connected to the adjusting connecting seat 108. The adjusting connecting seat 108 and the adjusting slide 106 are movably engaged with each other. The clamping assembly 300 includes a main frame 301, a tension rod 302, a second pull rope 307, a clamping connecting rod 309, and a clamping frame 311. The tension rod 302 is movably arranged inside the main frame 301. The second pull rope 307 is located on one side near the lifting plate 102, the clamping connecting rod 309 is located on the other side of the tension rod 302, the clamping frame 311 is located on the other side of the clamping connecting rod 309, the outer side of the tension rod 302 is sleeved with a return spring 303, and the inner side of the tension rod 302 is movably fitted with an adjusting rod 304. The outer side of the adjusting rod 304 has several sets of linearly and equally distributed adjusting holes 305. The distance between two adjacent sets of adjusting holes 305 is 3mm. One end of the pull rope 307 is fixedly connected to one side of the adjusting rod 304 and the other end is fixedly connected to the bottom of the lifting plate 102. The upper part of the tension rod 302 is threaded with the adjusting hole 305 and a positioning stud 306 is provided. The clamping frame 311 is fixedly connected to one side of the cargo with a rubber plate. The clamping frame 311 is rotatably connected to the main frame 301. A rotating seat 308 is provided on both sides of the clamping connecting rod 309. A tension seat 310 is provided at the end of the clamping frame 311 near the main frame 301. The adjusting cylinder 107 realizes the input and output of oil through the hydraulic system.

[0047] During the lifting process of the lifting plate 102, the linkage drives the clamping frame 311 to be in a vertical structure, so that the two sets of clamping frames 311 are located on both sides of the upper supporting goods, and the clamping frames 311 are set in the left and right moving direction. This not only keeps the position of the goods in single-layer moving transportation, but also prevents the goods from slipping due to the tilted structure during the layer changing process.

[0048] Based on the first embodiment described above, further, during the process of completing the shipment of goods, when the lifting plate 102 lifts the goods, the lifting plate 102 will drive the pull rope 307 to move, which in turn will cause the other end to pull the tension rod 302 to move. Then, the clamping link 309 will pull the tension seat 310 to move, which will then pull the clamping frame 311 to rotate, so that the clamping frame 311 is in a vertical structure. The clamping frame 311 is located on both sides of the direction of goods movement and clamps and limits it. This not only maintains the position of the goods in single-layer moving transportation, but also prevents the goods from slipping due to the tilted structure during the layer change process. When the lifting plate 102 loses its traction on the pull rope 307 during the descent process, the pull rope 307 will move in the opposite direction under the action of the return spring 303. In addition, the change of direction of the pull rope 307 between horizontal and vertical is assisted by the reversing wheel 105. Secondly, depending on the width of the goods in the left and right directions, the adjusting rod 304 can be moved linearly, so that the positioning stud 306, with its threaded structure, is screwed into the corresponding adjusting hole 305. Under the action of the hydraulic system, the adjusting cylinder 107 moves linearly to adjust the adjusting connecting seat 108, thereby enabling the linkage adjustment of the position of the main frame 301. This results in different spacings between the two sets of clamping frames 311 on the left and right sides when pulled by the second rope 307, thus adapting to the clamping and limiting use of goods of different specifications. Because the spacing between the two sets of adjusting holes 305 is small, it can meet the clamping of goods of conventional specifications, thereby assisting in the delivery of goods.

[0049] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An integrated hydraulic unit for a four-way vehicle power module, comprising: The four-way vehicle (100), the limiting component (200) and the clamping component (300) are characterized in that the four-way vehicle (100) includes a vehicle frame (101), a lifting plate (102), a climbing component (104) and a climbing guide rail (109), and the lifting plate (102) is disposed on the left and right sides above the vehicle frame (101); The climbing assembly (104) is located on the left and right sides of the vehicle frame (101) in the front and rear directions. The climbing assembly (104) includes left and right moving wheels (104a). The climbing guide rail (109) is located below the left and right moving wheels (104a). The limiting assembly (200) is located at the four corners of the vehicle frame (101). The clamping assembly (300) is located below the lifting plate (102).

2. The integrated hydraulic unit for a four-way vehicle power module as described in claim 1, characterized in that: The inner side of the vehicle frame (101) is provided with a hydraulic system, which includes a hydraulic cylinder (114), a hydraulic plate (115), a hydraulic oil circuit (116) and an oil tank. The hydraulic plate (115) is located on the left and right sides of the overall structure of the hydraulic system. The hydraulic cylinder (114) is located on the front and rear sides of the hydraulic plate (115), and the hydraulic oil circuit (116) is located inside the hydraulic plate (115) to realize the internal oil flow so that there is no external oil pipe connection. The oil tank is located between the two sets of hydraulic plates (115).

3. The integrated hydraulic unit for a four-way vehicle power module as described in claim 1, characterized in that: The vehicle frame (101) is also provided with a set of front and rear moving components (103) on both the left and right sides. The vehicle frame (101) has grooves that extend through to the left and right moving wheels (104a) on both the front and rear sides. Two symmetrically arranged connecting seats (111) are provided inside the grooves. A rotary torsion spring (110) is fixedly connected to the side of the connecting pivot (111) away from the center of the groove. An annular groove (112) is provided on the side of the connecting pivot (111) away from the center of the groove. Five sets of support wheels are connected to the inner side of the annular groove (112) in a movable fitting structure. A support column (113) is provided on the side of the support wheel away from the connecting pivot (111). The limiting assembly (200) includes a limiting frame (202), a tension seat (203), a rotating seat (204), a pull rope (205), a wheel frame (210), and a limiting wheel (211).

4. The integrated hydraulic unit for a four-way vehicle power module as described in claim 3, characterized in that: The first tension seat (203) is located inside one end of the limiting frame (202), the first rotating seat (204) is located inside the first tension seat (203), the first pull rope (205) is located at the outer end of the first rotating seat (204), and the wheel frame (210) is located at the other end of the limiting frame (202). The limiting wheel (211) is located on the inner side of the wheel frame (210) and is connected to the rotating structure. The limiting wheel (211) is provided in several sets and has a double row structure. A spring damping shock absorber (209) is fixedly connected to one end of the wheel frame (210) away from the limiting wheel (211). A guide wheel (206) is rotatably connected at the position where the pull rope (205) contacts the limiting frame (202). The upper bend of the pull rope (205) is also wrapped around the outside of the guide wheel (207). The guide wheel (207) is located on the other side of the pull rope (205) and is connected to the slow-release wheel frame (208). The slow-release wheel frame (208) is composed of the spring damping shock absorber and the wheel frame. One end of the limiting frame (202) is fixedly connected to the insert block (201) and is inserted into the connecting rotatable seat (111) and then fixed by bolts.

5. The integrated hydraulic unit for a four-way vehicle power module as described in claim 4, characterized in that: The climbing assembly (104) also includes a drive shaft (104b), a rotating frame (104c), a linear rack (104d), a first drive gear (104m), a second drive gear (104n), a rope pulley (104o), and a climbing groove (104p). The drive shaft (104b) is located between the front and rear sets of left and right moving wheels (104a). A rotating frame (104c) is sleeved on the outside of the drive shaft (104b) via a bearing. The linear rack (104d) is disposed above the rotating frame (104c). The first drive gear (104m) is disposed above the side away from the linear rack (104d). The second drive gear (104n) is disposed on one side of the first drive gear (104m). The rope wheel (104o) and the second transmission gear (104n) are connected coaxially to achieve synchronous rotation. The climbing groove (104p) is opened on the outer side of the left and right moving wheel (104a) and there are several of them. The climbing groove (104p) cooperates with the climbing guide rail (109) to realize the layer change. The climbing guide rail (109) is an inclined structure set to connect the upper and lower warehouse shelves. The linear rack (104d) also meshes with the first transmission gear (104m), and a third transmission gear (104x) is provided coaxially with the first transmission gear (104m). The third transmission gear (104x) meshes with the second transmission gear (104n). The other end of the pull rope (205) is wound and connected to the rope wheel (104o). The climbing assembly (104) has a structure that extends and retracts in two sections along the axial direction. The outer side of the drive shaft (104b) is also provided with a forward tooth (104q) and a reverse tooth (104r). The outer sides of the forward tooth (104q) and the reverse tooth (104r) are respectively engaged with a ratchet tooth (104s). A linkage rod (104t) is fixedly connected to the outer side of the ratchet tooth (104s). The other end of the linkage rod (104t) is connected to a linkage push plate (104u). The linkage push plate (104u) is connected to a linkage spring (104v) on the other side. The linkage push plate (104u) compresses the internal hydraulic oil during movement and guides it through the oil guide pipe (104w) at the other end. The other end of the oil guide pipe (104w) is connected to the switching cylinder (104e). The extension end of the switching cylinder (104e) is switched by the hydraulic oil squeezing the plunger and is connected to both sides of the plunger through the two sets of oil guide pipes (104w).

6. The integrated hydraulic unit for a four-way vehicle power module as described in claim 5, characterized in that: The drive shaft (104b) is fixedly connected to a ratchet tooth (104l) at the rotating frame (104c) on the outside. A ratchet tooth (104k) is rotatably connected to both the left and right sides of the rotating frame (104c). The ratchet tooth (104k) has a two-tooth structure and meshes with the ratchet tooth (104l). The rotating frame (104c) is also provided with a rotating plate (104h) on the inner side. The rotating plate (104h) is rotatably connected to the adjusting gear (104i) on the side facing the left and right moving wheels (104a). An adjusting seat (104f) is meshed above the adjusting gear (104i). An adjusting tooth (104g) is fixedly connected to the adjusting seat (104f) on the opposite side of the adjusting gear (104i). The adjusting tooth (104g) meshes with the adjusting gear (104i). The other side of the rotating plate (104h) is coaxially connected with the adjusting gear (104i) and the adjusting block (104j) for switching the meshing state of the two sets of ratchet teeth (104k) and ratchet teeth (104l). The adjusting seat (104f) achieves linear switching movement via the switching cylinder (104e).

7. The integrated hydraulic unit for a four-way vehicle power module as described in claim 1, characterized in that: The vehicle frame (101) is provided with reversing wheels (105) under the lifting plates (102) on both the front and rear sides. Adjustment grooves (106) are provided at the front and rear positions on both the left and right sides of the vehicle frame (101). Adjustment cylinders (107) are fixedly connected to the inner side of the adjustment grooves (106). The telescopic end of the regulating cylinder (107) is connected to an regulating connecting seat (108), and the regulating connecting seat (108) and the regulating slide (106) are movably fitted together. The clamping assembly (300) includes a main frame (301), a tension rod (302), a second pull rope (307), a clamping connecting rod (309), and a clamping frame (311). The tension rod (302) is movably arranged inside the main frame (301). The second pull rope (307) is located on one side near the lifting plate (102), the clamping connecting rod (309) is located on the other side of the tension rod (302), the clamping frame (311) is located on the other side of the clamping connecting rod (309), a return spring (303) is sleeved on the outside of the tension rod (302), and an adjusting rod (304) is movably fitted on the inside of the tension rod (302). The outer side of the adjusting rod (304) is provided with several sets of adjusting holes (305) that are linearly and equally distributed. The distance between two adjacent sets of adjusting holes (305) is 3mm. One end of the second pull rope (307) is fixedly connected to one side of the adjusting rod (304) and the other end is fixedly connected to the bottom of the lifting plate (102). The upper part of the tension rod (302) is threaded with the adjusting hole (305) and a positioning stud (306) is provided. The clamping frame (311) is fixedly connected to the side of the cargo with a rubber plate. The clamping frame (311) is rotatably connected to the main frame (301). A rotating seat (308) is provided on both sides of the clamping link (309). A tension seat (310) is provided at one end of the clamping frame (311) near the main frame (301). The adjusting cylinder (107) realizes oil input and output through the hydraulic system.

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