Small-tonnage integrated crane frame
Through the integrated frame structure and welding bracket design, the problems of large deformation and long assembly cycle of small tonnage cranes are solved, which achieves higher safety and lower cost, and simplifies the assembly process.
Patent Information
- Application Number
- CN202422566649.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-23
- Publication Date
- 2025-08-01
- Estimated Expiration
- 2034-10-23
AI Technical Summary
The existing small-tonnage crane frame is connected by multiple pull beam bolts, resulting in large deformation of the frame and low safety factor. The main and subframes are costly and have a long assembly cycle. The brackets installed on the subframe are also relatively high and the assembly cycle is long.
The integrated frame structure is adopted, and the front and rear frames are rigidly connected by connecting plates. The front and rear fixed leg boxes are used to provide additional support. The guardrail bracket, tool box bracket, hydraulic oil tank bracket, etc. are welded to the frame main body to reduce the bracket assembly process.
It improves the safety factor of the frame, reduces costs, shortens the assembly cycle, and enhances the reliability of the structure and the ease of processing.
Smart Images
Figure CN223175713U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of cranes, in particular to a small-tonnage integrated crane frame. Background Art
[0002] The existing small-tonnage crane frame is composed of a main frame and a sub-frame connected by a plurality of tie beam bolts. The frame has a large deformation, a low safety factor, and high costs for the main and sub-frames, and a long assembly period. Installing a guardrail bracket, a toolbox bracket, a hydraulic oil tank bracket, a lower vehicle control bracket, etc. on the sub-frame also has relatively high costs and a long assembly period. Summary of the Utility Model
[0003] In order to solve the deficiencies in the prior art, the purpose of the utility model is to provide a small-tonnage integrated crane frame.
[0004] To achieve the above purpose, the utility model adopts the following technical solutions:
[0005] A small-tonnage integrated crane frame includes a front frame, a rear frame, a front fixed outrigger box, a rear fixed outrigger box, and a connecting plate; the connecting plate is used to connect the front frame, the front fixed outrigger box, and the rear frame.
[0006] The front fixed outrigger box is arranged between the rear end of the front frame and the front end of the rear frame; the rear fixed outrigger box is arranged at the rear end of the rear frame; the upper surfaces of the front fixed outrigger box and the rear fixed outrigger box are flush with the upper surface of the rear frame.
[0007] The front fixed outrigger box is provided with a first guardrail bracket and a second guardrail bracket; a toolbox bracket is arranged on the side wall of the rear frame, and a hydraulic oil tank bracket and a lower vehicle control bracket are arranged on the other side;
[0008] The front frame includes a left longitudinal beam and a right longitudinal beam arranged at intervals, and a first cross beam and a second cross beam sequentially connected between the left longitudinal beam and the right longitudinal beam.
[0009] Preferably according to the utility model, both the left longitudinal beam and the right longitudinal beam are variable cross-section beams, and the cross-sectional area at the rear end is greater than that at the middle end, which is greater than that at the front end.
[0010] Preferably according to the utility model, first reinforcing plates, second reinforcing plates, and third reinforcing plates are sequentially arranged on the inner side walls of the left longitudinal beam and the right longitudinal beam.
[0011] Preferably according to the present utility model, the front fixed outrigger box includes an upper box body of the front fixed outrigger box and a lower box body of the front fixed outrigger box; the front side of the upper box body of the front fixed outrigger box is a first front web plate, the rear side is a first rear web plate, the top is a first upper cover plate, and the bottom is a first lower cover plate. A leg box reinforcing plate is arranged at the bottom of the upper box body of the front fixed outrigger box; the upper surface of the leg box reinforcing plate is welded and connected with the first lower cover plate, and the lower surface is flush with the cover plate at the bottom of the front vehicle frame; the length of the leg box reinforcing plate is equal to the inner distance between the first front web plate and the first rear web plate.
[0012] Preferably according to the present utility model, the rear fixed outrigger box includes an upper box body of the rear fixed outrigger box and a lower box body of the rear fixed outrigger box; the front side of the upper box body of the rear fixed outrigger box is a second front web plate, the rear side is a second rear web plate, the top is a second upper cover plate, and the bottom is a second lower cover plate.
[0013] Preferably according to the present utility model, the first guardrail bracket and the second guardrail bracket are respectively welded on the front and rear sides of the front fixed outrigger box.
[0014] Preferably according to the present utility model, the toolbox bracket, the hydraulic oil tank bracket and the lower vehicle operation bracket are all welded on the side wall of the rear vehicle frame.
[0015] Compared with the prior art, the advantages of the present utility model are as follows:
[0016] For the small-tonnage integrated crane vehicle frame of the present utility model, by adopting an integrated frame structure, the frame has small deformation and high safety factor. Moreover, the present utility model reduces the installation of the sub-frame, reduces the frame cost, and shortens the assembly cycle. By welding the guardrail bracket, the toolbox bracket, the hydraulic oil tank bracket, and the lower vehicle operation bracket on the frame body, the present utility model can reduce the bracket assembly process and improve the assembly efficiency. The small-tonnage integrated crane vehicle frame of the present utility model has the characteristics of simple structure, easy processing, reliable structure, and low cost. Description of the Drawings
[0017] Figure 1 is the structural schematic diagram of the small-tonnage integrated crane vehicle frame in the present utility model Figure 1 ;
[0018] Figure 2 is the structural schematic diagram of the small-tonnage integrated crane vehicle frame in the present utility model Figure 2 ;
[0019] Figure 3 is the structural schematic diagram of the small-tonnage integrated crane vehicle frame (without brackets) in the present utility model Figure 1 ;
[0020] Figure 4It is a structural schematic diagram of the frame (excluding brackets) of the integrated small and medium-tonnage hoisting vehicle of the present utility model Figure 2 ;
[0021] Figure 5 It is a structural schematic diagram of the front frame;
[0022] Figure 6 It is a structural schematic diagram of the front fixed outrigger box Figure 1 ;
[0023] Figure 7 It is a structural schematic diagram of the front fixed outrigger box Figure 2 ;
[0024] Figure 8 It is a structural schematic diagram of the rear fixed outrigger box.
[0025] Among them:
[0026] 1. Front frame, 11. First cross beam, 12. Second cross beam, 13. Right longitudinal beam, 14. First reinforcing plate, 15. Second reinforcing plate, 16. Third reinforcing plate, 17. Left longitudinal beam, 2. Front fixed outrigger box, 21. Upper box body of the front fixed outrigger box, 22. Lower box body of the front fixed outrigger box, 23. Outrigger box reinforcing plate, 24. First front web, 25. First rear web, 3. Rear frame, 4. Rear fixed outrigger box, 41. Upper box body of the rear fixed outrigger box, 42. Lower box body of the rear fixed outrigger box, 5. Connecting plate, 6. First guardrail bracket, 7. Second guardrail bracket, 8. Toolbox bracket, 9. Hydraulic oil tank bracket, 10. Lower vehicle control bracket. Specific embodiments
[0027] The following further describes the present utility model in conjunction with the accompanying drawings:
[0028] Such as Figures 1 to 4A small-tonnage integrated crane frame shown, including a front frame 1, a rear frame 3, a front fixed outrigger box 2, a rear fixed outrigger box 4 and a connecting plate 5; the connecting plate 5 is used to connect the front frame 1, the front fixed outrigger box 2 and the rear frame 3. The front frame 1 and the rear frame 3 jointly provide the structural support for the entire crane. The front frame 1 is used to install components such as front wheels, cabs, engines, etc. The rear frame 3 is used to install components such as rear wheels, counterweights, hydraulic systems, etc. The connecting plate 5 is used to rigidly connect the front frame and the rear frame through the connecting plate. The front fixed outrigger box 2 and the rear fixed outrigger box 4 extend during operation to expand the support area and improve stability. The connecting plate 5 ensures the rigid connection between the front and rear frames, shares the load, and reduces stress concentration. When the crane is in a moving state, the front fixed outrigger box 2 and the rear fixed outrigger box 4 are retracted, and the crane moves through the front and rear wheels. After the crane arrives at the work site, the front fixed outrigger box 2 and the rear fixed outrigger box 4 extend and contact the ground to provide additional support. At this time, the crane can safely perform lifting operations within a larger range.
[0029] As Figures 1 to 3 shown, the front fixed outrigger box 2 is arranged between the rear end of the front frame 1 and the front end of the rear frame 3; the rear fixed outrigger box 4 is arranged at the rear end of the rear frame 3; the upper surfaces of the front fixed outrigger box 2 and the rear fixed outrigger box 4 are flush with the upper surface of the rear frame 3.
[0030] As Figure 1 and Figure 2 shown, a first guardrail bracket 6 and a second guardrail bracket 7 are arranged on the front fixed outrigger box 2; a toolbox bracket 8 is arranged on the side wall of the rear frame 3, and a hydraulic oil tank bracket 9 and a lower vehicle control bracket 10 are arranged on the other side. Preferably, the first guardrail bracket 6 and the second guardrail bracket 7 are respectively welded on the front and rear sides of the front fixed outrigger box 2. The toolbox bracket 8, the hydraulic oil tank bracket 9 and the lower vehicle control bracket 10 are all welded on the side wall of the rear frame 3. Welding can ensure the rigidity and integrity of the structure.
[0031] As Figure 5As shown, the front frame 1 includes a left longitudinal beam 17 and a right longitudinal beam 13 arranged at intervals, and a first cross beam 11 and a second cross beam 12 sequentially connected between the left longitudinal beam 17 and the right longitudinal beam 13. Preferably, both the left longitudinal beam 17 and the right longitudinal beam 13 are variable cross-section beams, with the cross-sectional area at the rear end being greater than that at the middle end and greater than that at the front end. The cross beams connect the two longitudinal beams to form a stable frame structure, providing lateral support, enhancing the stability of the overall structure, sharing the load, and reducing the stress concentration on a single longitudinal beam. Through the variable cross-section design of the longitudinal beams, different load-bearing capacities can be provided at different positions, optimizing the use of materials and improving the structural efficiency. The cross-sectional area at the rear end is the largest, used to bear greater loads. The cross-sectional area at the middle end is the second largest, used for transition and supporting the middle load. The cross-sectional area at the front end is the smallest, but still needs sufficient strength to support the front components. High-strength low-alloy steel (such as Q345 or Q420) is usually used for the materials to ensure sufficient strength and stiffness.
[0032] Preferably according to the present utility model, first reinforcing plates 14, second reinforcing plates 15, and third reinforcing plates 16 are sequentially arranged on the inner side walls of the left longitudinal beam 17 and the right longitudinal beam 13. The reinforcing plates are welded inside the longitudinal beams to support the longitudinal beams and prevent the longitudinal beams from deforming under force. By welding the reinforcing plates inside the longitudinal beams, the local strength can be improved to prevent deformation under force. The reinforcing plates can be arranged horizontally or vertically, depending on the design requirements.
[0033] Preferably according to the present utility model, as Figures 6 to 8 shown, the front fixed leg box 2 includes a front fixed leg box upper box body 21 and a front fixed leg box lower box body 22; the front side of the front fixed leg box upper box body 21 is a first front web 24, the rear side is a first rear web 25, the top is a first upper cover plate, and the bottom is a first lower cover plate. A leg box reinforcing plate 23 is provided at the bottom of the front fixed leg box upper box body 21. The upper surface of the leg box reinforcing plate 23 is welded to the first lower cover plate, and the lower surface is flush with the cover plate at the bottom of the front frame 1. The upper plane of the upper box body and the upper plane of the rear frame are at the same height, avoiding a stepped structure that may trip people and an inclined structure that may cause people to accidentally slide off the frame. The length of the leg box reinforcing plate 23 is equal to the inner distance between the first front web 24 and the first rear web 25. A reinforcing plate is welded below the front fixed leg box. The upper edge of the reinforcing plate is welded to the lower cover plate of the leg box, and the lower edge is flush with the lower cover plate of the front frame. The length is equal to the inner distance between the front and rear webs of the front fixed leg box. This structure is simple, convenient for processing, has good force on the frame, and high reliability.
[0034] Preferably according to the present utility model, the rear fixed leg box 4 includes a rear fixed leg box upper box body 41 and a rear fixed leg box lower box body 42; the front side of the rear fixed leg box upper box body 42 is a second front web, the rear side is a second rear web, the top is a second upper cover plate, and the bottom is a second lower cover plate.
[0035] The fixed outrigger box is an important part of the crane, which is used to provide additional support during operation, increasing the stability and load-bearing capacity of the crane. The fixed outrigger box usually consists of an upper box and a lower box, and each part has its specific function and structural design. The upper box of the front fixed outrigger box 21 and the upper box of the rear fixed outrigger box 41 are used to provide connection interfaces with the vehicle frame, install hydraulic cylinders or other driving devices, and the driving devices are used to control the telescoping of the outriggers. The upper box of the front fixed outrigger box 21 and the upper box of the rear fixed outrigger box 41 can also protect the internal hydraulic system and other mechanical components. The lower box is used to support the weight of the crane, transfer the load to the ground, and at the same time provide outrigger foot pads in contact with the ground, and protect the outrigger foot pads and internal mechanical components. The telescoping of the outriggers is controlled by a hydraulic cylinder or other driving devices in the upper box. The lower box contacts the ground through the outrigger foot pads to provide stable support. When the outriggers are extended, the lower box distributes the weight of the crane evenly over a larger area, improving stability. In the moving state, the outriggers are retracted and the lower box does not contact the ground. After arriving at the work site, the outriggers are extended through the hydraulic system, and the lower box contacts the ground to provide additional support.
[0036] To sum up, for the small-tonnage integrated crane vehicle frame described in the present utility model, the vehicle frame is welded by a front vehicle frame, a rear vehicle frame, front and rear fixed outrigger boxes, and a connecting plate. The vehicle frame has small deformation and high safety factor. The installation of the sub-frame is reduced, the cost of the vehicle frame is lowered, and the assembly cycle is shortened. The guardrail bracket, toolbox bracket, hydraulic oil tank bracket, and lower vehicle operation bracket are welded to the main body of the vehicle frame, reducing the bracket assembly process, improving the assembly efficiency, having a simple structure, being easy to process, having a reliable structure, and having a lower cost.
[0037] The above-described embodiments are merely descriptions of the preferred embodiments of the present utility model, and do not limit the scope of the present utility model. Without departing from the design spirit of the present utility model, various deformations and improvements made by those of ordinary skill in the art to the technical solutions of the present utility model shall fall within the protection scope determined by the claims of the present utility model.
Claims
1. An integrated lifting vehicle frame with a small tonnage, characterized in that, It includes a front frame (1), a rear frame (3), a front fixed outrigger box (2), a rear fixed outrigger box (4) and a connecting plate (5); the connecting plate (5) is used to connect the front frame (1), the front fixed outrigger box (2) and the rear frame (3). The front fixed outrigger box (2) is arranged between the rear end of the front frame (1) and the front end of the rear frame (3); the rear fixed outrigger box (4) is arranged at the rear end of the rear frame (3); the upper surfaces of the front fixed outrigger box (2) and the rear fixed outrigger box (4) are flush with the upper surface of the rear frame (3). A first guardrail bracket (6) and a second guardrail bracket (7) are arranged on the front fixed outrigger box (2); a toolbox bracket (8) is arranged on the side wall of the rear frame (3), and a hydraulic oil tank bracket (9) and a lower vehicle operation bracket (10) are arranged on the other side. The front frame (1) includes a left longitudinal beam (17) and a right longitudinal beam (13) arranged at intervals, and a first cross beam (11) and a second cross beam (12) sequentially connected between the left longitudinal beam (17) and the right longitudinal beam (13).
2. The small-tonnage integrated crane vehicle frame according to claim 1, wherein Both the left longitudinal beam (17) and the right longitudinal beam (13) are variable cross-section beams, and the cross-sectional area of the rear end is greater than that of the middle end, which is greater than that of the front end.
3. The small-tonnage integrated crane vehicle frame according to claim 1, wherein First reinforcing plates (14), second reinforcing plates (15) and third reinforcing plates (16) are sequentially arranged on the inner side walls of the left longitudinal beam (17) and the right longitudinal beam (13).
4. The small-tonnage integrated crane vehicle frame according to claim 1, wherein The front fixed outrigger box (2) includes a front fixed outrigger box upper box body (21) and a front fixed outrigger box lower box body (22); the front side of the front fixed outrigger box upper box body (21) is a first front web (24), the rear side is a first rear web (25), the top is a first upper cover plate, and the bottom is a first lower cover plate. A leg box reinforcing plate (23) is arranged at the bottom of the front fixed outrigger box upper box body (21); the upper surface of the leg box reinforcing plate (23) is welded to the first lower cover plate, and the lower surface is flush with the cover plate at the bottom of the front frame (1); the length of the leg box reinforcing plate (23) is equal to the inner distance between the first front web (24) and the first rear web (25).
5. The small-tonnage integrated crane vehicle frame according to claim 1, wherein The rear fixed outrigger box (4) includes a rear fixed outrigger box upper box body (41) and a rear fixed outrigger box lower box body (42); the front side of the rear fixed outrigger box upper box body (41) is a second front web, the rear side is a second rear web, the top is a second upper cover plate, and the bottom is a second lower cover plate.
6. The small-tonnage integrated crane vehicle frame according to claim 1, wherein The first guardrail bracket (6) and the second guardrail bracket (7) are respectively welded to the front and rear sides of the front fixed outrigger box (2).
7. The integrated lifting vehicle frame with small tonnage according to claim 1, characterized in that the toolbox bracket (8), the hydraulic oil tank bracket (9) and the lower vehicle control bracket (10) are all welded on the side wall of the rear vehicle frame (3).