Low-position conveyor

Abstract

The low-position conveyor comprises a base, fixing plates are fixedly connected to the two sides of the upper portion of one end of the base, a first lifting frame is rotationally connected to the inner side of the base through the two fixing plates, and a second lifting frame is rotationally connected to the position, below the first lifting frame, of the inner side of the base. The inner side of the end, away from the fixing plate, of the first lifting frame is rotationally connected with a fixed-angle lifting frame. The first lifting frame is matched with the rotatable n-shaped connecting frame, the hydraulic cylinder body is rotationally connected with the other end of the n-shaped connecting frame to form a crank connecting rod structure, the hydraulic cylinder body can push the first lifting frame to rotate under the condition that the hydraulic cylinder body is fixed, the hydraulic cylinder body can be directly integrated with a pressing oil cylinder without rotating, and the hydraulic cylinder body is convenient to use. The oil leakage risk of the oil pipe is avoided and the practicability of the device is enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile maintenance equipment, in particular to a low-position conveyor. Background Art

[0002] The low-level conveyor, also called the gearbox bracket, is a kind of lifting equipment usually used for disassembling or assembling automobile engines or gearboxes. The existing gearbox brackets are very large in size and cannot be used in small spaces.

[0003] The utility model patent with application number CN201721123264.1 discloses a gearbox bracket device, which is suitable for replacing the gearbox tray structure of a common large vehicle jack. The jack and the tray can be quickly and simply separated and installed through the groove and the convex shaft, and the connection is guaranteed to be stable and firm. Since the jack and the tray can be quickly separated, the device can be transported in blocks during the transportation process, reducing the weight and difficulty of the overall movement. It has strong portability and solves the problem of carrying the device in a small space. However, the output end of the hydraulic cylinder of the existing equipment is usually directly connected to the lifting frame and rotates with the lifting frame. Not only is the stroke long, but it also requires an independent hydraulic pump and a flexible oil pipe for communication. After working for a long time, the oil pipe has the risk of oil leakage, and the manual pressure rod of the hydraulic pump generally rotates only relative to the shaft fixed on the vehicle, so a fixed pressure rod activity space is required. In a small space such as a maintenance pit, it can only be placed vertically, which is inconvenient to use and has further room for improvement. Utility Model Content

[0004] The purpose of the utility model is to solve at least one of the technical problems existing in the prior art and to provide a low-level conveyor to solve the above problem.

[0005] To achieve the above-mentioned purpose, a low-level conveyor is provided, comprising a base, wherein both sides above one end of the base are fixedly connected with fixed plates, a first lifting frame is rotatably connected to the inner side of the base through two fixed plates, a second lifting frame is rotatably connected to the inner side of the base below the first lifting frame, a fixed-angle lifting frame is rotatably connected to the inner side of one end of the first lifting frame away from the fixed plate, and two sides of the bottom of the fixed-angle lifting frame are rotatably connected to two sides of the top of the second lifting frame respectively;

[0006] A screw fixing shaft is rotatably connected to one end of the inner side of the fixed angle lifting frame close to the fixing plate, an adjusting screw is rotatably connected to the middle of the screw fixing shaft, and an adjustable tray frame is rotatably connected to the outer side of the top of the first lifting frame;

[0007] One end of the inner side of the base close to the fixed plate is fixedly connected with a hydraulic seat. The middle part of one side of the hydraulic seat close to the second lifting frame is fixedly connected with a hydraulic cylinder fixing sleeve. The inner side of the hydraulic cylinder fixing sleeve is fixedly sleeved with a main hydraulic cylinder. Both sides of the bottom of the first lifting frame are rotatably connected with a U-shaped connecting frame. The middle part above the hydraulic seat is provided with a pressing hydraulic cylinder. The outer side of the pressing hydraulic cylinder is rotatably connected with a pressing rod connecting sleeve. The top of the pressing hydraulic cylinder is rotatably connected with a lifting pressing rod. One side of the hydraulic seat above and close to the middle part is provided with an oil return valve.

[0008] Both ends of both sides of the base are fixedly connected with wheel seats. Below the four wheel seats are fixedly connected with universal wheels.

[0009] According to the low-position transporter described above, the adjustable tray rack includes a tray main body, side adjusting frames, sliding hanging ears, screw connecting seats and screw hole columns. Both sides above the tray main body are fixedly connected with side adjusting frames. Both ends of the two side adjusting frames are slidably connected with sliding hanging ears. The middle part of one end of the tray main body below and close to the adjusting screw is fixedly connected with a screw connecting seat. The lower part inside the screw connecting seat is rotatably connected with a screw hole column.

[0010] According to the low-position transporter described above, the length of the connecting line of the centers of the rotating shafts at the top of the first lifting frame and the second lifting frame is equal to and parallel to the connecting line of the centers of the rotating shafts at the bottom.

[0011] According to the low-position transporter described above, one end above and close to the main hydraulic cylinder of the pressing rod connecting sleeve is rotatably connected with a connecting rod. The top of the connecting rod is rotatably connected with the bottom of the lifting pressing rod.

[0012] According to the low-position transporter described above, the middle part of one end of the U-shaped connecting frame away from the first lifting frame is rotatably connected with the output end of the main hydraulic cylinder.

[0013] According to the low-position transporter described above, one end of the adjusting screw away from the screw fixed shaft passes through the screw hole column and is threadedly sleeved with the screw hole column.

[0014] The above solution has at least the following beneficial effects:

[0015] 1. The first lifting frame set in the present utility model, in cooperation with the rotatable U-shaped connecting frame, and the main hydraulic cylinder is rotatably connected with the other end of the U-shaped connecting frame, forming a crank and connecting rod structure. It can make the main hydraulic cylinder push the first lifting frame to rotate under the condition of being fixed, so that the main hydraulic cylinder can be directly integrated with the pressing hydraulic cylinder without rotation, avoiding the risk of oil leakage from the oil pipe and strengthening the practicability of the device.

[0016] 2. The utility model is provided with a pressure rod connecting sleeve rotatably sleeved on the pressure oil cylinder. In cooperation with the connection between the connecting rod and the lifting pressure rod, the lifting pressure rod can rotate around the pressure oil cylinder without affecting the operation of the pressure rod, enabling the device to still perform the lifting operation when placed horizontally in the pit, improving the flexibility of the device in a narrow space and enhancing the practicability of the device.

[0017] Additional aspects and advantages of the present utility model will be given in part in the following description, become apparent in part from the following description, or be understood through the practice of the present utility model. Description of the Drawings

[0018] The following further illustrates the present utility model in conjunction with the drawings and embodiments;

[0019] Figure 1 It is a left three-dimensional structure schematic diagram of a low-position transporter of the present utility model;

[0020] Figure 2 It is a right three-dimensional structure schematic diagram of a low-position transporter of the present utility model;

[0021] Figure 3 It is an axonometric drawing of a low-position transporter of the present utility model;

[0022] Figure 4 It is Figure 2 An enlarged view of part A.

[0023] Legend Explanation:

[0024] 1. Base; 2. Wheel seat; 3. Universal wheel; 4. Fixed plate; 5. First lifting frame; 6. Second lifting frame; 7. Fixed-angle lifting frame; 8. Adjustable tray frame; 9. Hydraulic seat; 10. Hydraulic cylinder fixing sleeve; 11. Hydraulic cylinder body; 12. Pressure oil cylinder; 13. U-shaped connecting frame; 14. Pressure rod connecting sleeve; 15. Lifting pressure rod; 16. Oil return valve; 17. Screw fixing shaft; 18. Adjusting screw; 81. Tray main body; 82. Side adjusting frame; 83. Sliding hanging ear; 84. Screw connecting seat; 85. Screw hole column. Detailed Embodiment

[0025] This part will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the drawings. The role of the drawings is to supplement the description in the text part of the specification, enabling people to intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but it cannot be understood as a limitation on the protection scope of the present utility model.

[0026] Refer to Figure 1-4, an embodiment of the present utility model provides a low-position transporter, which includes a base 1. At both ends of the two sides of the base 1, wheel seats 2 are fixedly connected. Below the four wheel seats 2, universal wheels 3 are fixedly connected. Above one end of the base 1, fixing plates 4 are fixedly connected to both sides. Inside the base 1, a first lifting frame 5 is rotatably connected through two fixing plates 4. Inside the base 1, a second lifting frame 6 is rotatably connected below the first lifting frame 5. Inside the first lifting frame 5, at one end away from the fixing plate 4, a fixed-angle lifting frame 7 is rotatably connected. The two sides of the bottom of the fixed-angle lifting frame 7 are respectively rotatably connected to the two sides of the top of the second lifting frame 6. The length of the center line of the top rotation axis and the bottom rotation axis of the first lifting frame 5 and the second lifting frame 6 are equal and parallel to each other. When the first lifting frame 5 is lifted and lowered, the fixed-angle lifting frame 7 can maintain a constant angle during lifting and lowering under the constraint of the second lifting frame 6;

[0027] Inside the fixed-angle lifting frame 7, at one end close to the fixing plate 4, a screw rod fixing shaft 17 is rotatably connected. In the middle of the screw rod fixing shaft 17, an adjusting screw rod 18 is rotatably connected. Outside the top of the first lifting frame 5, an adjustable tray frame 8 is rotatably connected. The adjustable tray frame 8 includes a tray main body 81, side adjusting frames 82, sliding hanging ears 83, a screw rod connecting seat 84, and a screw hole column 85. On both sides above the tray main body 81, side adjusting frames 82 are fixedly connected. At both ends of the two side adjusting frames 82, sliding hanging ears 83 are slidably connected. Below the tray main body 81, in the middle of one end close to the adjusting screw rod 18, a screw rod connecting seat 84 is fixedly connected. Below the inside of the screw rod connecting seat 84, a screw hole column 85 is rotatably connected. The end of the adjusting screw rod 18 away from the screw rod fixing shaft 17 passes through the screw hole column 85 and is threadedly sleeved with the screw hole column 85. By turning the adjusting screw rod 18, the distance between the screw hole column 85 and the screw rod fixing shaft 17 can be adjusted, and then the angle of the tray main body 81 can be adjusted;

[0028] Inside the base 1, at one end close to the fixing plate 4, a hydraulic seat 9 is fixedly connected. In the middle of one side of the hydraulic seat 9 close to the second lifting frame 6, a hydraulic cylinder fixing sleeve 10 is fixedly connected. Inside the hydraulic cylinder fixing sleeve 10, a hydraulic cylinder main body 11 is fixedly sleeved. At both sides of the bottom of the first lifting frame 5, a U-shaped connecting frame 13 is rotatably connected. The middle of the end of the U-shaped connecting frame 13 away from the first lifting frame 5 is rotatably connected to the output end of the hydraulic cylinder main body 11. The rotatable U-shaped connecting frame 13 arranged below the first lifting frame 5 can form a crank-link structure when the output end of the hydraulic cylinder main body 11 is rotatably connected to the other end of the U-shaped connecting frame 13. When the hydraulic cylinder main body 11 is fixed, the first lifting frame 5 can be pushed to rotate, so that the hydraulic cylinder main body 11 does not need to rotate and can be directly integrated with the pressure oil cylinder 12 without setting flexible oil pipes, avoiding the risk of oil leakage from the oil pipes;

[0029] In the middle above the hydraulic seat 9, a pressing oil cylinder 12 is provided. A pressing rod connecting sleeve 14 is rotatably connected to the outside of the pressing oil cylinder 12. A lifting pressing rod 15 is rotatably connected to the top of the pressing oil cylinder 12. Above one end of the pressing rod connecting sleeve 14 close to the hydraulic cylinder main body 11, a connecting rod is rotatably connected. The top of the connecting rod is rotatably connected to the bottom of the lifting pressing rod 15. A return oil valve 16 is provided on one side close to the middle above the hydraulic seat 9. The lifting pressing rod 15 is movably connected to the pressing rod connecting sleeve 14 through the connecting rod. The pressing rod connecting sleeve 14 rotatably sleeved on the pressing oil cylinder 12 can make the lifting pressing rod 15 rotate around the pressing oil cylinder 12 without affecting the work of the pressing rod, so that the device can still perform the lifting work when placed horizontally in the pit, improving the flexibility of the device in a narrow space.

[0030] Working principle: In the present utility model, the rotatable U-shaped connecting frame 13 provided below the first lifting frame 5 can form a crank and connecting rod structure when the output end of the hydraulic cylinder main body 11 is rotatably connected to the other end of the U-shaped connecting frame 13. When the hydraulic cylinder main body 11 is fixed, it can push the first lifting frame 5 to rotate, so that the hydraulic cylinder main body 11 does not need to rotate and can be directly integrated with the pressing oil cylinder 12 without setting flexible oil pipes, avoiding the risk of oil leakage from the oil pipes. Moreover, the lifting pressing rod 15 of the present utility model is movably connected to the pressing rod connecting sleeve 14 through the connecting rod. The pressing rod connecting sleeve 14 rotatably sleeved on the pressing oil cylinder 12 can make the lifting pressing rod 15 rotate around the pressing oil cylinder 12 without affecting the work of the pressing rod, so that the device can still perform the lifting work when placed horizontally in the pit, improving the flexibility of the device in a narrow space.

[0031] The above has described the embodiments of the present utility model in detail with reference to the drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those of ordinary skill in the art in the technical field, various changes can be made without departing from the purpose of the present utility model.

Claims

1. A low-level conveyor, comprising a base (1), characterized in that: On both sides above one end of the base (1), fixing plates (4) are fixedly connected. Inside the base (1), a first lifting frame (5) is rotatably connected through two fixing plates (4). Inside the base (1), a second lifting frame (6) is rotatably connected below the first lifting frame (5). Inside one end of the first lifting frame (5) away from the fixing plate (4), a fixed-angle lifting frame (7) is rotatably connected. Both sides of the bottom of the fixed-angle lifting frame (7) are respectively rotatably connected to both sides of the top of the second lifting frame (6). Inside the fixed-angle lifting frame (7), at one end near the fixing plate (4), a screw rod fixing shaft (17) is rotatably connected. In the middle of the screw rod fixing shaft (17), an adjusting screw rod (18) is rotatably connected. Outside the top of the first lifting frame (5), an adjustable tray frame (8) is rotatably connected. Inside the base (1), at one end near the fixing plate (4), a hydraulic base (9) is fixedly connected. In the middle of one side of the hydraulic base (9) close to the second lifting frame (6), a hydraulic cylinder fixing sleeve (10) is fixedly connected. Inside the hydraulic cylinder fixing sleeve (10), a hydraulic cylinder main body (11) is fixedly sleeved. Both sides of the bottom of the first lifting frame (5) are rotatably connected to a U-shaped connecting frame (13). Above the middle of the hydraulic base (9), a pressure oil cylinder (12) is arranged. Outside the pressure oil cylinder (12), a pressure rod connecting sleeve (14) is rotatably connected. At the top of the pressure oil cylinder (12), a lifting pressure rod (15) is rotatably connected. Near the middle of one side above the hydraulic base (9), an oil return valve (16) is arranged. At both ends of both sides of the base (1), wheel seats (2) are fixedly connected. Below the four wheel seats (2), universal wheels (3) are fixedly connected.

2. A low level conveyor according to claim 1, characterized in that: The adjustable tray frame (8) includes a tray main body (81), side adjusting frames (82), sliding hanging ears (83), a screw rod connecting seat (84), and a screw hole column (85). On both sides above the tray main body (81), side adjusting frames (82) are fixedly connected. At both ends of the two side adjusting frames (82), sliding hanging ears (83) are slidably connected. In the middle of one end of the tray main body (81) below near the adjusting screw rod (18), a screw rod connecting seat (84) is fixedly connected. Inside the lower part of the screw rod connecting seat (84), a screw hole column (85) is rotatably connected.

3. A low level conveyor according to claim 1, characterized in that: The length of the center line connection of the top rotation shafts of the first lifting frame (5) and the second lifting frame (6) is equal to and parallel to the center line connection of the bottom rotation shafts.

4. A low level conveyor according to claim 1, characterized in that: Above one end of the pressure rod connecting sleeve (14) close to the hydraulic cylinder main body (11), a connecting rod is rotatably connected. The top of the connecting rod is rotatably connected to the bottom of the lifting pressure rod (15).

5. A low level conveyor according to claim 1, characterized in that: The middle of one end of the U-shaped connecting frame (13) away from the first lifting frame (5) is rotatably connected to the output end of the hydraulic cylinder main body (11).

6. A low level conveyor according to claim 2, characterized in that: One end of the adjusting screw rod (18) away from the screw rod fixing shaft (17) passes through the screw hole column (85) and is threadedly sleeved with the screw hole column (85).

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