Mounting device for lorry-mounted crane base

Abstract

The utility model relates to the technical field of crane base installation, and particularly discloses a lorry-mounted crane base installation device which comprises a frame and a crane body, a hydraulic cylinder is installed on the lower end face of the frame, and the output end of the hydraulic cylinder penetrates through the frame and is fixedly connected with a driving plate. The front end and the rear end of the driving plate are fixedly connected with two first rotating shafts distributed left and right, the front end face and the rear end face of the frame are fixedly connected with two second rotating shafts distributed left and right, the upper end face of the frame is fixedly connected with a supporting seat, and the left end face and the right end face of the frame are fixedly connected with sliding rails located on the two sides of the supporting seat. And the outer walls of the two sliding rails are both slidably connected with sliding blocks, the front end faces and the rear end faces of the two sliding rails are both fixedly connected with two third rotating shafts distributed left and right, and the purposes that through a hydraulic automatic clamping mode, the risk that the crane is prone to loosening due to bolt installation is reduced, and the crane is conveniently and rapidly installed and disassembled are achieved.

Description

Technical Field

[0001] This utility model relates to the field of crane base installation technology, specifically a truck-mounted crane base installation device. Background Technology

[0002] A truck-mounted crane is a lifting device installed on a truck or other vehicle. It is highly mobile, able to follow the vehicle to different work locations, unlike stationary cranes which rely on a specific site. Structurally, it includes key components such as the boom, slewing mechanism, hoisting mechanism, and base. The boom can extend and retract, the hoisting mechanism is responsible for lifting and lowering heavy objects, and the slewing mechanism allows the boom to rotate within a certain angle range to flexibly adjust the working position.

[0003] An existing truck-mounted crane base mounting device uses bolts or welding to install the crane onto the vehicle. Bolt installation can lead to bolt loosening over time, while welding makes it inconvenient to disassemble and maintain the crane, resulting in inconvenience in use. Therefore, there is a need to propose a truck-mounted crane base mounting device to solve the above problems. Utility Model Content

[0004] The purpose of this utility model is to provide a crane base mounting device, which has the characteristics of reducing the risk of crane loosening due to bolt installation through hydraulic automatic clamping, and facilitating the quick installation and disassembly of the crane body.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a truck-mounted crane base mounting device, comprising a frame and a crane body, wherein a hydraulic cylinder is mounted on the lower end face of the frame, the output end of the hydraulic cylinder passes through the frame and is fixedly connected to a drive plate, two first rotating shafts distributed left and right are fixedly connected to both the front and rear ends of the drive plate, two second rotating shafts distributed left and right are fixedly connected to both the front and rear ends of the frame, a support base is fixedly connected to the upper end face of the frame, slide rails located on both sides of the support base are fixedly connected to both the left and right ends of the frame, sliders are slidably connected to the outer walls of the two slide rails, two third rotating shafts distributed left and right are fixedly connected to both the front and rear ends of the two slide rails, a connecting rod is rotatably connected to the outer wall of the second rotating shaft, and a limiting groove sleeved on the outer wall of the connecting rod and a sliding groove sleeved on the outer wall of the first rotating shaft are provided through the connecting rod.

[0006] To facilitate the limiting of the front and rear end faces of the crane body base plate, as a preferred embodiment of the truck crane base mounting device of this utility model, the upper end face of the support seat is provided with a groove.

[0007] To facilitate the support frame, as a preferred embodiment of the truck crane base mounting device of this utility model, the lower end face of the frame is fixedly connected to two vertical plates distributed on the left and right, and the other end of the two vertical plates is fixedly connected to a mounting plate.

[0008] To facilitate limiting the left and right ends of the crane body, as a preferred embodiment of the truck crane base mounting device of this utility model, both sliders are L-shaped.

[0009] To facilitate limiting the movement of the connecting rod, as a preferred embodiment of the truck crane base mounting device of this utility model, one end of the second rotating shaft is fixedly connected to a limiting block.

[0010] To prevent the mounting plate from shaking inside the groove and thus increase its stability, as a preferred embodiment of the truck crane base mounting device of this utility model, the distance between the front and rear ends inside the groove is adapted to the size of the crane body base plate.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] In this invention, the mounting plate is fixed to the vehicle by welding. The crane body is placed inside the support base. The hydraulic cylinder is activated to drive the drive plate connected to it to move downward. As the drive plate moves downward, it pulls the connecting rod around the second rotating shaft through the first rotating shaft. As the connecting rod rotates, it drives the third rotating shaft and the slider connected to it to move through the limiting groove. By moving the two sliders relative to each other, the two ends of the crane body base plate can be clamped. This hydraulic automatic clamping method reduces the risk of the crane loosening due to bolt installation and facilitates the quick installation and disassembly of the crane. Attached Figure Description

[0013] Figure 1 This is an overall structural diagram of the present invention;

[0014] Figure 2 This is a structural diagram of the slider of this utility model;

[0015] Figure 3 This is a diagram of the connecting rod structure of this utility model.

[0016] In the diagram: 1. Mounting plate; 2. Vertical plate; 3. Frame; 4. Hydraulic cylinder; 5. Drive plate; 6. First rotating shaft; 7. Second rotating shaft; 8. Support base; 9. Slide rail; 10. Slider; 11. Limit block; 12. Third rotating shaft; 13. Crane body; 14. Limit groove; 15. Slide groove; 16. Groove; 17. Connecting rod. Detailed Implementation

[0017] Please see Figures 1 to 3A truck-mounted crane base mounting device includes a frame 3 and a crane body 13. A hydraulic cylinder 4 is mounted on the lower end face of the frame 3. The output end of the hydraulic cylinder 4 passes through the frame 3 and is fixedly connected to a drive plate 5. Two first rotating shafts 6 distributed left and right are fixedly connected to both the front and rear ends of the drive plate 5. Two second rotating shafts 7 distributed left and right are fixedly connected to both the front and rear ends of the frame 3. A support seat 8 is fixedly connected to the upper end face of the frame 3. Slide rails 9 located on both sides of the support seat 8 are fixedly connected to both the left and right ends of the frame 3. Sliding blocks 10 are slidably connected to the outer walls of the two slide rails 9. Two third rotating shafts 12 distributed left and right are fixedly connected to both the front and rear ends of the two slide rails 9. A connecting rod 17 is rotatably connected to the outer wall of the second rotating shaft 7. A limiting groove 14 sleeved on the outer wall of the third rotating shaft 12 and a sliding groove 15 sleeved on the outer wall of the first rotating shaft 6 are opened through the connecting rod 17.

[0018] In this embodiment: When in use, the crane body 13 is placed inside the support base 8, and the hydraulic cylinder 4 is activated to drive the drive plate 5 connected to it to move downward. While the drive plate 5 moves downward, it will pull the connecting rod 17 to rotate around the second rotating shaft 7 through the first rotating shaft 6. While the connecting rod 17 rotates, it will drive the third rotating shaft 12 and the slider 10 connected to it to move through the limiting groove 14. By making the two sliders 10 move relative to each other, the two ends of the crane body 13 can be clamped. At this time, the top end inside the slider 10 abuts against the upper end surface of the mounting plate 1, thus completing the installation of the crane body 13.

[0019] As a technical optimization of this utility model, a groove 16 is provided on the upper end surface of the support base 8.

[0020] In this embodiment, the front and rear ends of the bottom plate of the crane body 13 can be conveniently limited by the groove 16.

[0021] As a technical optimization of this utility model, the lower end face of the frame 3 is fixedly connected to two vertical plates 2 distributed on the left and right, and the other end of the two vertical plates 2 is fixedly connected to a mounting plate 1.

[0022] In this embodiment: two vertical plates 2 can be used to support the frame 3, and the mounting plate 1 is used to support the entire crane.

[0023] As a technical optimization of this utility model, both sliders 10 are L-shaped.

[0024] In this embodiment, both sliders 10 are L-shaped, which can conveniently limit the left and right ends of the crane body 13.

[0025] As a technical optimization of this utility model, one end of the second rotating shaft 7 is fixedly connected to a limiting block 11.

[0026] In this embodiment, the connecting rod 17 can be conveniently limited by the limiting block 11.

[0027] As a technical optimization of this utility model, the distance between the front and rear ends inside the groove 16 is adapted to the size of the bottom plate of the crane body 13.

[0028] In this embodiment, by adapting the distance between the front and rear ends inside the groove 16 to the size of the base plate of the crane body 13, the base plate of the crane body 13 can be prevented from shaking inside the groove 16.

[0029] Working principle: When in use, the crane body 13 is placed inside the support base 8. The hydraulic cylinder 4 is activated to drive the drive plate 5 connected to it to move downward. While the drive plate 5 moves downward, it will pull the connecting rod 17 to rotate around the second rotating shaft 7 through the first rotating shaft 6. While the connecting rod 17 rotates, it will drive the third rotating shaft 12 and the slider 10 connected to it to move through the limiting groove 14. By moving the two sliders 10 relative to each other, the two ends of the crane body 13 can be clamped. At this time, the top of the inside of the slider 10 abuts against the upper end surface of the mounting plate 1, thus completing the installation of the crane body 13.

[0030] During disassembly, the hydraulic cylinder 4 is activated to drive the drive plate 5 connected to it to move upward. As the drive plate 5 moves upward, it pulls the connecting rod 17 to rotate around the second rotating shaft 7 through the first rotating shaft 6. As the connecting rod 17 rotates, it drives the third rotating shaft 12 and the slider 10 connected to it to move through the limit groove 14. This allows the two sliders 10 to move in opposite directions. At this time, the two sliders 10 move away from the crane body 13, and the crane body 13 can be disassembled.

[0031] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A luffing device for a mobile crane, comprising a frame (3) and a crane body (13), characterized in that: The lower end surface of the frame (3) is provided with a hydraulic cylinder (4), the output end of the hydraulic cylinder (4) penetrates the frame (3) and is fixedly connected with a driving plate (5), the front and rear ends of the driving plate (5) are fixedly connected with two first rotating shafts (6) distributed left and right, the front and rear end surfaces of the frame (3) are fixedly connected with two second rotating shafts (7) distributed left and right, the upper end surface of the frame (3) is fixedly connected with a supporting seat (8), the left and right end surfaces of the frame (3) are fixedly connected with slide rails (9) located on the two sides of the supporting seat (8), the outer walls of the two slide rails (9) are slidably connected with sliding blocks (10), the front and rear end surfaces of the two slide rails (9) are fixedly connected with two third rotating shafts (12) distributed left and right, the outer wall of the second rotating shaft (7) is rotatably connected with a connecting rod (17), the outer wall of the connecting rod (17) penetrates a limiting groove (14) sleeved on the outer wall of the third rotating shaft (12) and a sliding groove (15) sleeved on the outer wall of the first rotating shaft (6).

2. A luffing mechanism for a mobile crane according to claim 1, characterized in that: The upper end surface of the supporting seat (8) is provided with a groove (16).

3. A mobile crane base mounting arrangement according to claim 1, characterised in that: The lower end surface of the frame (3) is fixedly connected with two vertical plates (2) distributed left and right, and the other ends of the two vertical plates (2) are fixedly connected with mounting plates (1).

4. A mobile crane base mounting arrangement according to claim 1, characterised in that: The two sliding blocks (10) are both "L" shaped.

5. A mobile crane base mounting arrangement according to claim 1, characterised in that: One end of the second rotating shaft (7) is fixedly connected with a limiting block (11).

6. A mobile crane base mounting arrangement according to claim 2, characterised in that: The distance between the front and rear ends inside the groove (16) is matched with the size of the bottom plate of the crane body (13).

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