Liftable loading and unloading trolley

Abstract

The lifting type loading and unloading trolley comprises a movable base component, hydraulic lifting components are fixedly supported on the left side and the right side of the upper end of the movable base component, and the movable ends of the hydraulic lifting components are fixedly connected with the left end and the right end of a limiting bracket component respectively; the movable base component comprises a base, a plurality of trundle mounting plates are arranged on the lower end face of the movable base component, trundles are connected with the base through the trundle mounting plates, cushion blocks are arranged at the lower ends of the trundle mounting plates, and the bottoms of the cushion blocks are in threaded connection with leveling feet and locked through nuts. The position of the loading and unloading trolley is adjusted by moving the base part, and the bearing surface of the to-be-transported part can be adjusted to a horizontal posture, so that the bearing surface is opposite to and parallel to the mounting surface of the to-be-transported part of equipment. The heights of the left end and the right end of the limiting bracket component are synchronously adjusted through the hydraulic lifting component, so that the loading and unloading trolley bearing surface and the to-be-transported component mounting surface are consistent in height, the loading and unloading requirements of to-be-transported components with different mounting heights can be met, the operation is convenient, safe and efficient, and the operation quality is effectively guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of logistics equipment and relates to a liftable loading and unloading trolley. Background Art

[0002] Existing industrial equipment often includes multiple components. When a component needs to be repaired, it is necessary to remove the component from the equipment to a workbench for related operations, such as maintenance or repair.

[0003] Existing component handling uses a handling trolley. The existing trolley can only finely adjust the carrying height during the leveling process and cannot meet the loading and unloading requirements of components to be transported on different equipment, so the versatility of the trolley is poor.

[0004] When maintaining the component to be transported, it is necessary to use a crane to lift the component to be transported for transfer. The component to be transported is prone to shaking and bumping, causing problems such as surface damage and oil spillage. The disassembly and assembly quality cannot be guaranteed, the disassembly and assembly efficiency is low, and there are certain safety hazards. Summary of the Invention

[0005] The purpose of the utility model is to provide a liftable loading and unloading trolley, which can solve the above problems, can adapt to the loading and unloading requirements of components to be transported at different installation heights, and can transport the components to be transported.

[0006] According to the technical solution provided by the present utility model: A liftable loading and unloading trolley includes a moving base component. On the upper left and right sides of the moving base component, hydraulic lifting components are fixedly supported. The moving ends of the hydraulic lifting components are respectively fixedly connected to the left and right ends of a limit bracket component; The moving base component includes a base. A plurality of caster mounting plates are arranged on the lower end surface of the base. The casters are connected to the base through the caster mounting plates. Cushion blocks are arranged at the lower ends of the caster mounting plates. The bottom of the cushion blocks is threadedly connected with leveling anchor bolts and locked by nuts; A handle is installed at the longitudinal middle position on the upper end of the base. Oil cylinder mounting plates are symmetrically arranged at both ends of the U-shaped opening on the upper end of the base. A plurality of threaded holes are opened on the oil cylinder mounting plates; Guide post mounting plates are symmetrically arranged on the left and right sides of the oil cylinder mounting plates. Threaded holes arranged in a circumferential uniform distribution are opened on the guide post mounting plates; The limit bracket component consists of a bracket assembly, a locking card plate, a front limit stop block, a rear limit stop block, and an outer cross bar; The bracket assembly includes a support frame. On the upper left and right sides of the support frame, mounting seats are symmetrically arranged. A plurality of oil cylinder mounting holes arranged in a circumferential uniform distribution are opened in the middle of the mounting seats; A piston rod through hole is arranged at the central position of the oil cylinder mounting hole; Bearing mounting holes are opened at both ends of the mounting seat and are symmetrically arranged along the center line of the mounting seat. Bearing connection holes are circumferentially uniformly distributed around the bearing mounting holes. On the outer sides of the front two columns of the support frame on the left and right, side cushion blocks and front cushion blocks are arranged. A plurality of threaded holes are opened on the side cushion blocks and the front cushion blocks; A guide rail is arranged at the lower end of the support frame. The upper end surface of the guide rail bottom plate is the bearing surface for the component to be transported, and the two side surfaces guide the component to be transported to move in or out; A grounding inclined surface is arranged at the front end of the guide rail to facilitate moving the component to be transported out of the trolley during maintenance; Front limit waist-shaped holes and rear limit waist-shaped holes are arranged on the guide rail bottom plate. The front limit stop block and the rear limit stop block are respectively installed in the front limit waist-shaped hole and the rear limit waist-shaped hole. One end of the locking card plate is fixedly connected to the side cushion block through a fastener, and the other end is provided with a hook. Both ends of the outer cross bar are fixedly connected to the front cushion block through fasteners; The hydraulic lifting component includes a hydraulic cylinder. An oil cylinder mounting seat is arranged at the bottom of the hydraulic cylinder. The connection holes on the oil cylinder mounting seat correspond one by one to the hole positions on the oil cylinder mounting plate. The hydraulic cylinder is fixedly connected to the moving base component through fasteners; A hydraulic cylinder piston rod is arranged in the hydraulic cylinder. A top seat is installed at the top of the hydraulic cylinder piston rod. The top seat is fixedly connected to the mounting seat. Guide columns are symmetrically arranged on the left and right sides of the hydraulic cylinder. The lower ends of the guide columns are fixedly connected to the guide post mounting plates through guide post mounting seats. Linear bearings are arranged at the upper ends of the guide columns. The linear bearing housings are fixedly connected to the mounting seats through fasteners. The outer circle of the guide column is matched with the inner circle of the linear bearing, and the linear bearing and the guide column can slide relative to each other in the vertical direction. Hydraulic lifting components are symmetrically installed on the upper left and right sides of the moving base component. The upper ends of the hydraulic lifting components are fixedly connected to the mounting seats on the left and right sides of the limit bracket component through the top seats.

[0007] As a further improvement of the present utility model, the two hydraulic lifting components are symmetrically arranged along the center line of the moving base component; The top view contour of the base is U-shaped, and the base is symmetrically arranged along its horizontal center line.

[0008] As a further improvement of the present utility model, the support frame is of a frame structure, and its outer contour is U-shaped when viewed from above, with the open side for the incoming or outgoing of the components to be transported.

[0009] As a further improvement of the present utility model, the lower parts of the front limit stop block and the rear limit stop block are respectively located in the front limit waist-shaped hole and the rear limit waist-shaped hole, and the upper parts of the front limit stop block and the rear limit stop block are located above the front limit waist-shaped hole and the rear limit waist-shaped hole, and can be adjusted as needed and fixed at a certain position on the guide rail.

[0010] As a further improvement of the present utility model, threaded holes are provided on the top seat.

[0011] As a further improvement of the present utility model, the working heights of the hydraulic lifting components at both ends are controlled by a hydraulic system; the hydraulic system includes a manual hydraulic pump, and the oil inlets of a reversing valve and a first overflow valve connected in parallel are both connected to the oil outlet of the manual hydraulic pump. The hydraulic cylinders on both sides are respectively a left hydraulic cylinder and a right hydraulic cylinder. The oil inlet of the manual hydraulic pump and the oil outlet of the first overflow valve are both connected to the fuel tank. The working oil port of the reversing valve is connected to the oil inlet of a synchronous flow dividing motor. The first oil outlet and the second oil outlet of the synchronous flow dividing motor are respectively connected to the rodless cavities of the left hydraulic cylinder and the right hydraulic cylinder through a second overflow valve and a one-way valve, and the rod cavities of the left hydraulic cylinder and the right hydraulic cylinder are connected to the fuel tank through the reversing valve.

[0012] The positive and progressive effects of this application are as follows:

[0013] 1. The present utility model adjusts the position of the loading and unloading trolley through the moving base component, and can adjust the bearing surface of the component to be transported to a horizontal posture, making it opposite and parallel to the installation surface of the component to be transported of the equipment. And a hydraulic lifting component is provided to realize the height adjustment of the bearing surface, so that the bearing surface of the loading and unloading trolley is at the same height as the installation surface where the component to be transported is located. The adjustment of the trolley position and the bearing surface height is convenient, labor-saving and efficient.

[0014] 2. During the loading and unloading process of the component to be transported, the limit bracket component is used to bear and support the component to be transported, and can fixedly connect the loading and unloading trolley with the equipment where the component to be transported is located, so that the two are stably maintained in a relative position. And it limits the component to be transported moved to the bearing surface of the loading and unloading trolley. The component to be transported is placed stably and firmly, improving the operation stability and safety, and effectively ensuring the loading and unloading quality of the component to be transported.

[0015] 3. The present utility model can lower the limit bracket component to the workbench surface through the hydraulic lifting component, and move the component to be transported out of the trolley for maintenance and repair. The transfer process of the component to be transported is stable and efficient, effectively avoiding the shaking and bumping caused by the lifting of the component to be transported, eliminating potential safety hazards, and improving the operation quality.

[0016] 4. The structure of the utility model is relatively simple, with low manufacturing cost, and the trolley is stable and reliable, easy to operate, improving the operation efficiency. When disassembling and assembling different parts to be transported, the position of the loading and unloading trolley and the height of the bearing surface of the parts to be transported can be adjusted as needed according to the installation position of the parts to be transported, so as to meet the loading and unloading requirements of different parts to be transported at different installation heights, and the parts to be transported can be transferred. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic structural diagram of the utility model.

[0018] Figure 2 It is a front view of the moving base component in the utility model.

[0019] Figure 3 It is a top view of the moving base component in the utility model.

[0020] Figure 4 It is a schematic structural diagram of the limit bracket component in the utility model.

[0021] Figure 5 It is a front view of the support frame in the utility model.

[0022] Figure 6 It is a top view of the support frame in the utility model.

[0023] Figure 7 It is a schematic structural diagram of the hydraulic lifting component in the utility model.

[0024] Figure 8 It is a working principle diagram of the hydraulic system in the utility model.

[0025] Figures 9 - 11 It is an implementation schematic diagram of the trolley used in the loading and unloading process of the parts to be transported in the utility model.

[0026] Explanation of the reference numerals in the drawings of the specification:

[0027] 1. Mobile base component; 2. Limit bracket component; 3. Hydraulic lifting component; 4. Component to be transported; 5. Base; 6. Caster mounting plate; 7. Casters; 8. Spacers; 9. Leveling feet; 10. Cylinder mounting plate; 11. Handle; 12. Guide post mounting plate; 13. Bracket assembly; 14. Locking clamp plate; 15. Front limit stop; 16. Rear limit stop; 17. Outer crossbar; 18. Support frame; 19. Mounting seat; 20. Side spacer; 21. Front spacer; 22. Guide rail; 23. Cylinder mounting hole; 24. Piston rod through hole; 25. Bearing mounting hole; 26. Bearing connection hole; 27. Grounding slope; 28. Carrying surface of the component to be transported; 29-1. Front limit waist-shaped hole; 29-2. Rear limit waist-shaped hole; 30. Cylinder mounting seat; 31. Guide post mounting seat; 32. Hydraulic cylinder; 33. Hydraulic cylinder piston rod; 34. Top seat; 35. Linear bearing; 36. Guide post; 37. Manual hydraulic pump; 38. First relief valve; 39. Directional control valve; 40. Synchronous flow dividing motor; 41. Check valve; 42. Second relief valve; 43. Fuel tank; 44. Equipment; 45. Mounting surface of the component to be transported; 46. Workbench surface. Detailed implementation mode

[0028] It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other. The present utility model will be described in detail below with reference to the drawings and in combination with the embodiments.

[0029] In order to enable those skilled in the art to better understand the solution of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0030] It should be noted that the terms "first", "second", etc. in the description and claims of the present utility model and the above-mentioned drawings are used to distinguish similar objects, and do not have to be used to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so as to describe the embodiments of the present utility model here. In addition, similar terms such as "including" and "having" mean that in addition to the content already listed in "including" and "having", other content that has not been listed can also be "included" and "had"; for example, a process, method, system, product or device that can include a series of steps or units does not have to be limited to the clearly listed steps or units, but can include other steps or units that are not clearly listed or are inherent to these processes, methods, products or devices.

[0031] Due to the drawing angle, some components may not be drawn, but their positions and connection relationships can be understood according to the text description part.

[0032] Such as Figure 1 As shown in the figure, the utility model is a liftable loading and unloading trolley, which includes a moving base component 1. On the upper end of the moving base component 1, hydraulic lifting components 3 are fixedly supported on the left and right sides. The two hydraulic lifting components 3 are symmetrically arranged along the center line of the moving base component 1. The moving ends of the hydraulic lifting components 3 are respectively fixedly connected to the left and right ends of the limit bracket component 2. By hydraulic control, the left and right ends of the limit bracket component 2 are lifted and lowered synchronously, and the lifting process is smooth and stable.

[0033] The moving base component 1 serves as the installation platform of the loading and unloading trolley. The limit bracket component 2 and the hydraulic lifting component 3 are supported and installed on its upper end, which can adjust the overall position and plane attitude of the trolley to make the trolley adapt to the position of the component 4 to be transported on the equipment 44, effectively ensuring the stability of the loading and unloading process of the component 4 to be transported.

[0034] According to the installation position of the component 4 to be transported on the equipment 44, the height of the limit bracket component 2 can be adjusted through the hydraulic lifting component 3 to make the position of the limit bracket component 2 adapt to the position of the component 4 to be transported, so as to complete the loading and unloading of the component 4 to be transported. The limit bracket component 2 can stably connect the loading and unloading trolley with the equipment 44 where the component 4 to be transported is located, ensuring that their relative positions remain unchanged during the loading and unloading process, limiting the horizontal position of the component 4 to be transported moved to the loading and unloading trolley, providing circumferential protection for the component 4 to be transported, and the component 4 to be transported is placed stably and firmly, avoiding the sliding and bumping of the component 4 to be transported. The above-mentioned trolley has a simple and stable structure, is easy to use, can be adjusted according to needs to make the loading and unloading trolley adapt to the position of the component 4 to be transported, meets the loading and unloading requirements of different components 4 to be transported on different equipment 44, limits the component 4 to be transported on the loading and unloading trolley, avoids the shaking and oil leakage caused by instability during the loading and unloading process of the component 4 to be transported, improves the loading and unloading quality and operation efficiency, and eliminates potential safety hazards. In addition, the trolley can realize the transfer of the component 4 to be transported, and the operation is labor-saving and convenient.

[0035] The following describes the specific structure of the trolley in detail in combination with each component.

[0036] Figure 2 、 Figure 3Schematically shows the specific structure of the mobile base component 1. The mobile base component 1 includes a base 5. The top view contour of the base 5 is U-shaped. The base 5 is symmetrically arranged along its horizontal center line. A plurality of caster mounting plates 6 are provided on its lower end surface. The casters 7 are connected to the base 5 through the caster mounting plates 6. A spacer 8 is arranged at the lower end of the caster mounting plate 6. The leveling foot 9 is threadedly connected to the bottom of the spacer 8 and locked by a nut. A handle 11 is installed at the longitudinal middle position of the upper end of the base 5. Cylinder mounting plates 10 are symmetrically arranged at both ends of the U-shaped opening at the upper end of the base 5. A plurality of threaded holes are provided in the cylinder mounting plates 10. Guide post mounting plates 12 are symmetrically arranged on the left and right sides of the cylinder mounting plates 10. Threaded holes arranged in a circumferential uniform distribution are provided in the guide post mounting plates 12. During the use of the trolley, the position of the trolley can be adjusted by pushing and pulling the handle 11, and the adjustment is flexible and convenient. And the base 5 is adjusted to a horizontal state through the leveling feet 9, so that the component 4 to be transported can be smoothly moved onto or out of the loading and unloading trolley, and the disassembly and assembly process is safe and stable. The above structure can realize the adjustment of the position and plane attitude of the loading and unloading trolley so as to adapt to the position of the component 4 to be transported. The adjustment is labor-saving, convenient, fast and efficient, improves the stability of the loading and unloading process, and can realize the transfer of the component 4 to be transported.

[0037] Figure 4 Schematically shows the specific structure of the limit bracket component 2. The limit bracket component 2 is composed of a bracket assembly 13, a locking card plate 14, a front limit stop 15, a rear limit stop 16, and an outer cross bar 17. As Figure 5 , Figure 6 shown, the bracket assembly 13 includes a support frame 18. The support frame 18 is of a frame structure, which is used to carry the component 4 to be transported and provide support and connection for other parts. Its top view contour is U-shaped, and one side of the opening is for the component 4 to be transported to move in or out. On the left and right sides of the upper end of the support frame 18, mounting seats 19 are symmetrically arranged. A plurality of cylinder mounting holes 23 arranged in a circumferential uniform distribution are provided in the middle of the mounting seats 19, which correspond one by one to the connection holes of the top seat 34 at the upper end of the hydraulic cylinder 32. A piston rod through hole 24 is provided at the center position of the cylinder mounting hole 23. Bearing mounting holes 25 are provided at both ends of the mounting seat 19 and are symmetrically arranged along the center line of the mounting seat 19 for installing linear bearings 35. Bearing connection holes 26 are circumferentially uniformly distributed in the bearing mounting holes 25 for fixedly connecting the linear bearings 35. Side pads 20 and front pads 21 are provided on the outer sides of the left and right two columns at the front end of the support frame 18. A plurality of threaded holes are provided in the side pads 20 and front pads 21. A guide rail 22 is provided at the lower end of the support frame 18. The upper end surface of the bottom plate of the guide rail 22 is the bearing surface 28 for the component to be transported, and both side faces guide the component 4 to move in or out. A grounding inclined surface 27 is provided at the front end of the guide rail 22, which is convenient for moving the component 4 to be transported out of the trolley during maintenance. Front limit waist-shaped holes 29-1 and rear limit waist-shaped holes 29-2 are provided on the bottom plate of the guide rail 22 for placing the front limit stop 15 and the rear limit stop 16.

[0038] AsFigure 4 As shown, the front limit stop 15 and the rear limit stop 16 are respectively installed in the front limit waist-shaped hole 29-1 and the rear limit waist-shaped hole 29-2. The positions of the front limit stop 15 and the rear limit stop 16 can be set according to the specifications of the component 4 to be transported, so as to limit the component 4 to be transported on the guide rail 22, prevent the component 4 to be transported from sliding out of the guide rail 22, avoid bumping and scratching of the component 4 to be transported, and eliminate potential safety hazards. Specifically, the lower parts of the front limit stop 15 and the rear limit stop 16 are respectively located in the front limit waist-shaped hole 29-1 and the rear limit waist-shaped hole 29-2, and the upper parts of the front limit stop 15 and the rear limit stop 16 are located above the front limit waist-shaped hole 29-1 and the rear limit waist-shaped hole 29-2, and the lower parts are fixed at a certain position on the guide rail through fasteners. One end of the locking clamp plate 14 is fixedly connected to the side cushion block 20 through a fastener, and the other end is provided with a hook for hooking the device 46 to make it stable and not shake, and both ends of the trolley are stably connected to the device 44 to prevent the trolley from shifting or sliding during the loading and unloading of the component 4 to be transported, effectively ensuring the stability of the disassembly and assembly process. Both ends of the outer cross bar 17 are fixedly connected to the front cushion block 21 through fasteners, realizing the limitation of the position on the side of the moving direction of the component 4 to be transported, and jointly protecting the circumference of the component 4 to be transported with the bracket assembly 13, realizing the limitation of all aspects of the component 4 to be transported, and strengthening the strength of the support frame 18, ensuring the stability of the limit bracket component 2, and the operation is safe and reliable. It should be understood that the outer cross bar 17 is removed before the component 4 to be transported is loaded into the support frame 18, and then connected to the front cushion block 21 after the component 4 to be transported is loaded into the support frame 18.

[0039] Figure 7 The specific structure of the hydraulic lifting component 3 is schematically shown. The hydraulic lifting component 3 includes a hydraulic cylinder 32. The bottom of the hydraulic cylinder 32 is provided with a cylinder mounting seat 30. The connection holes on the cylinder mounting seat 30 correspond one by one to the hole positions of the cylinder mounting plate 10, and the hydraulic cylinder 32 is fixedly connected to the moving base component 1 through fasteners. A hydraulic cylinder piston rod 33 is arranged in the hydraulic cylinder 32. The top of the hydraulic cylinder piston rod 33 is threadedly connected to the center of the top seat 34, and a number of threaded holes are circumferentially arranged on the top seat 34, and are fixedly connected to the mounting seat 19 through fasteners.

[0040] The hydraulic cylinders 32 are symmetrically arranged on the left and right with guide columns 36. The lower ends of the guide columns 36 are fixedly connected to the guide column mounting plate 12 through the guide column mounting seats 31. Linear bearings 35 are provided at the upper ends of the guide columns 36. The housing of the linear bearing 35 is fixedly connected to the mounting seat 19 through fasteners. The outer circle of the guide column 36 is fitted with the inner circle of the linear bearing 35. The linear bearing 35 and the guide column 36 can slide relative to each other in the vertical direction, which is used to guide the lifting process of the limit bracket component 2. On the loading and unloading trolley, hydraulic lifting components 3 are symmetrically installed on the left and right sides at the upper end of the moving base component 1. The upper ends of the hydraulic lifting components 3 are fixedly connected to the mounting seats 19 on the left and right sides of the limit bracket component 2 through the top seats 34. By adjusting the hydraulic lifting components 3, the limit bracket component 2 can be lifted and lowered up and down at the middle neutral position of the moving base component 1, meeting the loading and unloading requirements of the components 4 to be transported at different installation heights on the equipment 46.

[0041] To ensure the synchronous lifting of the left and right ends of the limit bracket component 2, the lifting of the hydraulic lifting components 3 at both ends is controlled by the hydraulic system. As Figure 8 shown, the hydraulic system includes a manual hydraulic pump 37. The oil inlets of the change-over valve 39 and the first overflow valve 38, which are connected in parallel, are both connected to the oil outlet of the manual hydraulic pump 37. The two hydraulic cylinders 32 on both sides are respectively the left hydraulic cylinder 32-1 and the right hydraulic cylinder 32-2. The oil inlet of the manual hydraulic pump 37 and the oil outlet of the first overflow valve 38 are both connected to the fuel tank 43. The working oil port of the change-over valve 39 is connected to the oil inlet of the synchronous flow dividing motor 40. The first oil outlet and the second oil outlet of the synchronous flow dividing motor are respectively connected to the rodless chambers of the left hydraulic cylinder 32-1 and the right hydraulic cylinder 32-2 through the second overflow valve 42 and the one-way valve 41. The second overflow valve 42 is provided to keep the working pressure of the hydraulic cylinder 32 within a stable range, ensuring the stability of the operation of the hydraulic system. The rod chambers of the left hydraulic cylinder 32-1 and the right hydraulic cylinder 32-2 are connected to the fuel tank 43 through the change-over valve 39. When the hydraulic system is working, the manual hydraulic pump 37 is started to supply oil to the hydraulic system. By adjusting the working position of the change-over valve 39, the lifting and lowering of the hydraulic cylinder 32 are controlled. The synchronous flow dividing motor 40 can make the left hydraulic cylinder 32-1 and the right hydraulic cylinder 32-2 lift and lower synchronously, keeping the bearing surface of the component 4 to be transported on the loading and unloading trolley always horizontal, and the height adjustment of the limit bracket component 2 is smooth and stable, effectively ensuring the loading and unloading quality of the component 4 to be transported and the operation stability.

[0042] Figures 9 - 11 Shows the implementation schematic diagram of the trolley used in the loading and unloading process of the component 4 to be transported. The following will describe in detail the usage method and operation steps of the trolley during the disassembly and installation processes of the component 4 to be transported:

[0043] In this embodiment, the equipment 44 is a mixer, and the component 4 to be transported is a hydraulic station.

[0044] (1)Disassembly process of the component to be transported 4. The usage method and steps of the trolley include: 1) Move the loading and unloading trolley to the side of the equipment 44 through the handle 11, align the casters of the component to be transported 4 with the guide rail 22 of the loading and unloading trolley horizontally, and adjust the leveling feet 9 at each lower end of the base 5 to adjust the bearing surface 28 of the component to be transported to a horizontal state; 2) Start the hydraulic system to make the piston rod 33 of the hydraulic cylinder extend and retract, adjust the height of the limit bracket component 2, and align the grounding slope 27 of the guide rail 22 with the installation surface 45 of the component to be transported, as Figure 9 shown; 3) Adjust the position of the locking plate 14 so that the hook of the locking plate 14 hooks inside the square hole on the side of the frame of the equipment 44, and fixedly connect the other side to the side spacer 20 to stably connect the loading and unloading trolley to the equipment 44 and keep their relative positions unchanged; 4) Install the front limit stop 15 on the guide rail 22 to preliminarily limit the component to be transported 4 moved in, as Figure 10 shown; 5) Move the component to be transported 4 into the guide rail 22 of the loading and unloading trolley, make the casters of the component to be transported 4 contact the front limit stop 15, and install the rear limit stop 16 to complete the horizontal limit of the component to be transported 4 in the guide rail 22 through the front and rear stops; 6) Install the cross bar 17 on the front spacer 21 of the limit bracket component 2, stably connect the open ends of the support frame 18 left and right to prevent the component to be transported 4 from accidentally sliding out and avoid bumping and damaging the component to be transported 4, and complete the disassembly of the component to be transported 4 from the equipment 44, as Figure 11 shown; 7) Remove the locking plates 14 on both sides of the loading and unloading trolley, separate the loading and unloading trolley from the equipment 44, and push the handle 11 to transfer the loading and unloading trolley to the maintenance area; 8) Adjust the hydraulic system to lower the entire limit bracket component 2 to the workbench surface 46, remove the front limit stop 15, the rear limit stop 16, and the cross bar 17, and push the component to be transported 4 out along the guide rail 22, and then maintenance and repair can be carried out.

[0045] (2)Installation process of the component to be transported 4. The usage method and steps of the trolley include: 1) Adjust the hydraulic system to lower the limit bracket component 2 to the workbench surface 46 and install the front limit stop 15 into the guide rail 22; 2) Push the component to be transported 4 into the loading and unloading trolley along the guide rail 22, install the rear limit stop 16, clamp the component to be transported 4 in the guide rail 22, and install the cross bar 17 to connect the columns at both left and right ends of the support frame 18 to limit the component to be transported 4; 3) Move the loading and unloading trolley to the side of the equipment 44 and adjust the height of the leveling feet 9 to place the trolley horizontally; 4) Adjust the hydraulic system to lift the limit bracket component 2 until the grounding slope 27 is aligned with the installation surface 45 of the component to be transported; 5) Install the locking plate 14 to connect the loading and unloading trolley to the equipment 44 and keep their relative positions unchanged; 6) Remove the cross bar 17, the rear limit stop 16, and the front limit stop 15, and move the component to be transported 4 from the loading and unloading trolley to the corresponding position of the equipment 44 along the guide rail 22; 7) Remove the locking plates 14 on both sides to separate the loading and unloading trolley from the equipment 44 and complete the transfer of the component to be transported 4 from the loading and unloading trolley to the equipment 44.

[0046] It is understandable that the above embodiments are merely exemplary embodiments adopted to illustrate the principle of the present utility model. However, the present utility model is not limited thereto. For those of ordinary skill in the art, various modifications and improvements can be made without departing from the spirit and essence of the present utility model, and these modifications and improvements are also regarded as the protection scope of the present utility model.

Claims

1. A liftable loading and unloading trolley, characterized in that, It includes a mobile base component (1). On the upper ends of the left and right sides of the mobile base component (1), hydraulic lifting components (3) are fixedly supported. The mobile ends of the hydraulic lifting components (3) are respectively fixedly connected to the left and right ends of the limit bracket component (2); The mobile base component (1) includes a base (5). On its lower end face, a number of caster mounting plates (6) are provided. Casters (7) are connected to the base (5) through the caster mounting plates (6). At the lower end of the caster mounting plate (6), a cushion block (8) is arranged. The bottom of the cushion block (8) is threadedly connected to a leveling floor bolt (9) and locked with a nut; In the longitudinal middle position of the upper end of the base (5), a handle (11) is installed. At both ends of the U-shaped opening at the upper end of the base (5), oil cylinder mounting plates (10) are symmetrically arranged. A number of threaded holes are provided on the oil cylinder mounting plates (10); On the left and right sides of the oil cylinder mounting plates (10), guide post mounting plates (12) are symmetrically arranged. Threaded holes arranged in a circumferential uniform distribution are provided on the guide post mounting plates (12); The limit bracket component (2) consists of a bracket assembly (13), a locking clamp plate (14), a front limit stop block (15), a rear limit stop block (16), and an outer cross bar (17); The bracket assembly (13) includes a support frame (18). On the upper ends of the left and right sides of the support frame (18), mounting seats (19) are symmetrically arranged. In the middle of the mounting seats (19), a number of oil cylinder mounting holes (23) arranged in a circumferential uniform distribution are provided; At the central position of the oil cylinder mounting hole (23), a piston rod through hole (24) is provided; At both ends of the mounting seat (19), bearing mounting holes (25) are provided and are symmetrically arranged along the middle line of the mounting seat (19). Bearing connection holes (26) are circumferentially uniformly distributed in the bearing mounting holes (25). On the outer sides of the front left and right columns of the support frame (18), side cushion blocks (20) and front cushion blocks (21) are provided. A number of threaded holes are provided on the side cushion blocks (20) and the front cushion blocks (21); At the lower end of the support frame (18), a guide rail (22) is provided. The upper end face of the bottom plate of the guide rail (22) is the carrying surface (28) for the component to be transported. The two side faces guide the component to be transported (4) to move in or out; At the front end of the guide rail (22), a grounding inclined surface (27) is provided to facilitate the removal of the component to be transported (4) from the trolley during maintenance; On the bottom plate of the guide rail (22), a front limit waist-shaped hole (29-1) and a rear limit waist-shaped hole (29-2) are provided. The front limit stop block (15) and the rear limit stop block (16) are installed in the front limit waist-shaped hole (29-1) and the rear limit waist-shaped hole (29-2). One end of the locking clamp plate (14) is fixedly connected to the side cushion block (20) through a fastener, and the other end is provided with a hook. Both ends of the outer cross bar (17) are fixedly connected to the front cushion block (21) through fasteners; The hydraulic lifting component (3) includes a hydraulic cylinder (32). At the bottom of the hydraulic cylinder (32), an oil cylinder mounting seat (30) is provided. The connection holes on the oil cylinder mounting seat (30) correspond one by one to the hole positions of the oil cylinder mounting plate (10). The hydraulic cylinder (32) is fixedly connected to the mobile base component (1) through fasteners;A hydraulic cylinder piston rod (33) is provided in the hydraulic cylinder (32). A top seat (34) is installed at the top of the hydraulic cylinder piston rod (33). The top seat (34) is fixedly connected to the mounting seat (19). Guide columns (36) are symmetrically arranged on the left and right sides of the hydraulic cylinder (32). The lower ends of the guide columns (36) are fixedly connected to the guide column mounting plate (12) through the guide column mounting seats (31). Linear bearings (35) are provided at the upper ends of the guide columns (36). The housing of the linear bearing (35) is fixedly connected to the mounting seat (19) through fasteners. The outer circle of the guide column (36) is fitted with the inner circle of the linear bearing (35). The linear bearing (35) and the guide column (36) can slide relative to each other in the vertical direction. Hydraulic lifting components (3) are symmetrically installed on the left and right sides at the upper end of the moving base component (1). The upper ends of the hydraulic lifting components (3) are fixedly connected to the mounting seats (19) on the left and right sides of the limit bracket component (2) through the top seat (34).; 2. The liftable loading and unloading trolley according to claim 1, wherein, Two hydraulic lifting components (3) are symmetrically arranged along the center line of the moving base component (1); the top view contour of the base (5) is U-shaped, and the base (5) is symmetrically arranged along its horizontal center line.

3. The liftable loading and unloading trolley according to claim 1, characterized in that, The support frame (18) is of a frame structure, and its outer contour is U-shaped when viewed from above, and one side of the opening is used for the loading or unloading of the component to be transported (4).

4. The liftable loading and unloading trolley according to claim 1, wherein, The lower parts of the front limit stop block (15) and the rear limit stop block (16) are respectively located in the front limit waist-shaped hole (29-1) and the rear limit waist-shaped hole (29-2), and the upper parts of the front limit stop block (15) and the rear limit stop block (16) are located above the front limit waist-shaped hole (29-1) and the rear limit waist-shaped hole (29-2), and can be adjusted and fixed at a certain position on the guide rail (22) as required.

5. The liftable loading and unloading trolley according to claim 1, wherein, Threaded holes are provided on the top seat (34).

6. The liftable loading and unloading trolley according to claim 1, wherein The working height of the two hydraulic lifting components (3) at both ends is controlled by a hydraulic system; the hydraulic system includes a manual hydraulic pump (37), and the oil inlets of the reversing valve (39) and the first overflow valve (38) connected in parallel are both connected to the oil outlet of the manual hydraulic pump (37). The hydraulic cylinders (32) on both sides are respectively the left hydraulic cylinder (32-1) and the right hydraulic cylinder (32-2). The oil inlet of the manual hydraulic pump (37) and the oil outlet of the first overflow valve (38) are both connected to the fuel tank (43). The working oil port of the reversing valve (39) is connected to the oil inlet of the synchronous flow dividing motor (40). The first oil outlet and the second oil outlet of the synchronous flow dividing motor are respectively connected to the rodless cavity of the left hydraulic cylinder (32-1) and the rodless cavity of the right hydraulic cylinder (32-2) through the second overflow valve (42) and the one-way valve (41). The rod cavities of the left hydraulic cylinder (32-1) and the right hydraulic cylinder (32-2) are connected to the fuel tank (43) through the reversing valve (39).

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