Disassembly-free counterweight device capable of shifting on load for crane

Abstract

The utility model discloses a dismounting-free on-load displacement counterweight device for a crane. The counterweight device comprises a vehicle body, a crane main body is mounted on the vehicle body, supporting assemblies are symmetrically arranged at the bottom end of the rear part of the vehicle body, a connecting plate is arranged on the vehicle body through an adjusting mechanism, a counterweight assembly is arranged on the connecting plate, and the connecting plate is connected with the vehicle body through a positioning assembly. The position of the counterweight assembly can be conveniently adjusted according to use requirements, the lifting capacity and stability of the automobile crane can be remarkably improved by adjusting the position of the counterweight device, the operation performance of the crane can be improved by adjusting the counterweight position, the vibration of an arm frame can be reduced by optimizing the counterweight position, and the service life of the crane is prolonged. The stability and safety of the crane are improved, the crane is relatively simple and convenient, positioning and fixing can be carried out after adjustment is completed, and firmness during use is ensured.

Description

Technical Field

[0001] This utility model relates to the field of crane equipment technology, specifically to a counterweight device for cranes that can be disassembled and repositioned under load. Background Technology

[0002] A truck crane is a lifting device mounted on a standard or specialized truck chassis. It possesses excellent mobility and rapid relocation capabilities. Utilizing the truck chassis, it shares the driving performance of a vehicle, allowing for quick travel and relocation on roads, making it suitable for highly mobile work sites. Based on lifting capacity, truck cranes are classified as light-duty, medium-duty, heavy-duty, and super-heavy-duty. To ensure safety during use, a counterweight device is required mounted on the truck. However, existing cranes have certain shortcomings in practical use. Most counterweight devices are fixed in inconvenient positions, and sometimes, to improve stability and performance, it is necessary to install or remove the counterweight device, which is relatively inconvenient. Utility Model Content

[0003] The purpose of this utility model is to provide a counterweight device for cranes that can be disassembled and repositioned under load, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a counterweight device for cranes that can be disassembled and repositioned under load, comprising a vehicle body, a crane body mounted on the vehicle body, support components symmetrically arranged at the rear bottom of the vehicle body, a connecting plate provided on the vehicle body through an adjustment mechanism, a counterweight component provided on the connecting plate, and the connecting plate and the vehicle body connected by a positioning component.

[0005] In order to facilitate the adjustment of the position of the counterweight components and adjust them according to the needs of use, the adjustment mechanism includes symmetrical adjustment slots on the vehicle body, an adjustment plate is slidably provided in the adjustment slots, and the adjustment plate is connected to the connecting plate through a sliding component;

[0006] To assist in guiding and limiting the adjustment during sliding, guide blocks are provided at equal intervals on both sides of the adjustment plate, and guide grooves matching the guide blocks are opened on the inner side wall of the adjustment groove.

[0007] Preferably, in order to provide support during loading and unloading of goods and ensure safety, the support assembly includes hydraulic telescopic rods symmetrically arranged at the bottom rear of the vehicle body. A support block is fixedly provided at the bottom of the hydraulic telescopic rod, and an anti-slip pad is provided at the bottom of the support block. Anti-slip protrusions are provided at equal intervals at the bottom of the anti-slip pad.

[0008] Preferably, in order to facilitate the overall upward movement of the connecting plate and eliminate the positioning effect of the positioning component, and to facilitate subsequent movement and adjustment operations, the sliding component includes a sliding cavity opened in the adjustment plate, a sliding plate is slidably provided in the sliding cavity, a connecting rod is fixedly provided at the top of the sliding plate, and the connecting rod slides out of the sliding cavity and is fixedly connected to the connecting plate.

[0009] Preferably, in order to allow for the assembly and disassembly of the counterweight plates as needed, and to facilitate subsequent adjustment operations, the counterweight assembly includes a counterweight plate mounted on a connecting plate. The counterweight plate and the connecting plate are connected by a fixing screw. The fixing screw is provided with a washer, and the top of the fixing screw has a connection hole that matches the crane body.

[0010] Preferably, in order to ensure stable and secure positioning after adjustment and assembly, the positioning component includes positioning protrusions equidistantly arranged under the connecting plate, and positioning grooves that match the positioning protrusions are equidistantly opened on the vehicle body.

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

[0012] (1) The position of the counterweight component can be easily adjusted according to the usage needs by using the adjustment mechanism in conjunction with the positioning component and the counterweight component. By adjusting the position of the counterweight device, the lifting capacity and stability of the truck crane can be significantly improved. The adjustment of the counterweight position can also improve the operation performance of the crane. By optimizing the counterweight position, the boom vibration can be reduced, and the stability and safety of the crane can be improved. It is relatively simple and convenient. After the adjustment is completed, it can be positioned and fixed to ensure that it is firm during use.

[0013] (2) The supporting components provided can provide support during loading and unloading of goods, thereby ensuring stability and safety during use. They are also easy to store after use, making them simple and convenient. Attached Figure Description

[0014] Figure 1 This is a structural schematic diagram of a counterweight device for a crane that can be disassembled and repositioned under load, as proposed in this utility model.

[0015] Figure 2 This is a schematic diagram of the structure on the connecting plate of a counterweight device for a crane that can be disassembled and repositioned under load, as proposed in this utility model.

[0016] Figure 3 This is a partial structural diagram of the connecting plate in a counterweight device for cranes that can be disassembled and repositioned under load, as proposed in this utility model.

[0017] Figure 4 This utility model presents a schematic diagram of the split structure of the connecting plate and the counterweight assembly in a counterweight device for cranes that can be disassembled and repositioned under load.

[0018] Figure 5This is a schematic diagram of the support component in a non-disassembly, load-bearing, and repositionable counterweight device for a crane, as proposed in this utility model. In the figure: 1. Car body; 2. Crane main body; 3. Hydraulic telescopic rod; 4. Counterweight plate; 5. Adjustment groove; 6. Positioning groove; 7. Connecting plate; 8. Adjustment plate; 9. Guide groove; 10. Guide block; 11. Fixing screw; 12. Shim; 13. Connecting hole; 14. Positioning protrusion; 15. Sliding cavity; 16. Slide plate; 17. Connecting rod; 18. Support block; 19. Anti-slip pad; 20. Anti-slip protrusion. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figures 1-5 One embodiment of this utility model is a counterweight device for cranes that can be disassembled and repositioned under load, comprising a vehicle body 1 ( Figure 1 The vehicle (as shown) is mainly composed of a cab and a carriage. The crane body 2 is mounted on the vehicle body 1 and can be installed at the position shown in the figure or at other positions as needed. To ensure stability during use, a hydraulic telescopic rod 3 with a support component is installed at the rear bottom of the vehicle body 1 by screws. A support block 18 is installed at the bottom of the hydraulic telescopic rod 3, which can easily form support with the ground to ensure stability during loading and unloading. An anti-slip pad 19 is glued to the bottom of the support block 18, and anti-slip protrusions 20 (which can also be integrally formed) are glued to the bottom of the anti-slip pad 19 at equal intervals to increase the friction with the ground and ensure the support effect.

[0021] Please see Figures 1-5To ensure stability during use and allow for repositioning of the counterweight components without disassembly, the vehicle body 1 is symmetrically equipped with adjustment slots 5 for the adjustment mechanism. An adjustment plate 8 slides within the adjustment slots 5, and guide blocks 10 are symmetrically welded to the side walls of the adjustment plate 8. The inner side wall of the adjustment slots 5 is provided with guide grooves 9 to facilitate the sliding and limiting of the guide blocks 10. For convenient adjustment of the counterweight components, a sliding cavity 15 for the sliding components is provided inside the adjustment plate 8. A sliding plate 16 slides within the sliding cavity 15, and a connecting rod 17 is welded to the top of the sliding plate 16. The top of the connecting rod 17 slides out of the sliding cavity 15 and extends outwards to be welded and fixed to the connecting plate 7. The connecting plate 7 is equidistantly equipped with counterweight plates 4 (the number of which depends on the actual assembly requirements). The connecting plate 7 is welded with a fixing screw 11, and the counterweight plate 4 has a through hole for easy insertion with the fixing screw 11. The fixing screw 11 is threaded with a nut for easy tightening after assembly. The fixing screw 11 is fitted with a washer 12 to ensure a tight fit. The top of the fixing screw 11 has a connecting hole 13 (for easy connection with the hook of the crane body 2, which can be connected by steel cable, etc., a mature technology that will not be elaborated here), which facilitates the overall upward movement of the connecting plate 7 for subsequent adjustment and movement. The bottom of the connecting plate 7 is welded with positioning protrusions 14 of the positioning component at equal intervals. The corresponding positioning groove 6 on the vehicle body 1 matches the positioning protrusions 14, which facilitates positioning after assembly and adjustment and prevents the connecting plate 7 and the counterweight plate 4 from moving.

[0022] Working principle: In use, this utility model assembles a corresponding number of counterweight plates 4 as needed, and secures them with nuts and washers 12 on the fixing screws 11. When the position of the counterweight plates 4 needs to be adjusted, a steel cable is threaded through the connecting hole 13 of the fixing screws 11 and then connected to the hook of the crane body 2. The connecting plate 7 can be pulled upward as a whole, and the connecting rod 17 and the sliding plate 16 slide within the sliding cavity 15, allowing the positioning protrusion 14 to leave the positioning groove 6. As the crane body 2 operates, it assists in pushing the counterweight plates 4, allowing the adjusting plate 8 to slide within the adjusting groove 5. The guide block 10 slides within the guide groove 9 to assist in guiding and limiting. After adjustment, the connecting plate 7 is lowered and reset under gravity. The slide plate 16 slides within the sliding cavity 15 to reset, and the positioning protrusion 14 enters the positioning groove 6 for positioning and fixing. The positioning and fixing are achieved under the overall gravity of the connecting plate 7 and the counterweight plate 4, ensuring stability and firmness during use. When loading and unloading goods, the hydraulic telescopic rod 3 can be extended to lower the support block 18. The anti-slip pad 19 and the anti-slip protrusion 20 contact the ground for support, ensuring overall stability and safety.

[0023] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A counterweight device for cranes that can be disassembled and repositioned under load, comprising a vehicle body (1), characterized in that: The vehicle body (1) is equipped with a crane body (2), and the rear bottom of the vehicle body (1) is symmetrically provided with support components. The vehicle body (1) is provided with a connecting plate (7) through an adjustment mechanism. The connecting plate (7) is provided with a counterweight component. The connecting plate (7) and the vehicle body (1) are also connected by a positioning component. The adjustment mechanism includes adjustment slots (5) symmetrically opened on the vehicle body (1), and an adjustment plate (8) is slidably provided in the adjustment slots (5). The adjustment plate (8) is connected to the connecting plate (7) through a sliding component. The two side walls of the adjusting plate (8) are provided with guide blocks (10) at equal intervals, and the inner side wall of the adjusting groove (5) is provided with a guide groove (9) that matches the guide blocks (10).

2. The counterweight device for cranes that can be disassembled and repositioned under load according to claim 1, characterized in that: The support assembly includes a hydraulic telescopic rod (3) symmetrically arranged at the rear bottom of the vehicle body (1). A support block (18) is fixedly provided at the bottom of the hydraulic telescopic rod (3). An anti-slip pad (19) is provided at the bottom of the support block (18). Anti-slip protrusions (20) are provided at equal intervals at the bottom of the anti-slip pad (19).

3. A counterweight device for cranes that can be disassembled and repositioned under load, as described in claim 2, is characterized in that: The sliding assembly includes a sliding cavity (15) opened in the adjustment plate (8), a sliding plate (16) is slidably provided in the sliding cavity (15), a connecting rod (17) is fixedly provided at the top of the sliding plate (16), and the connecting rod (17) slides out of the sliding cavity (15) and is fixedly connected to the connecting plate (7).

4. A counterweight device for cranes that can be disassembled and repositioned under load, as described in claim 3, is characterized in that: The counterweight assembly includes a counterweight plate (4) disposed on a connecting plate (7). The counterweight plate (4) is connected to the connecting plate (7) by a fixing screw (11). The fixing screw (11) is provided with a washer (12), and the top end of the fixing screw (11) is provided with a connecting hole (13) that matches the crane body (2).

5. A counterweight device for cranes that can be disassembled and repositioned under load according to claim 4, characterized in that: The positioning component includes positioning protrusions (14) equidistantly arranged under the connecting plate (7), and positioning grooves (6) equidistantly arranged on the vehicle body (1) to match the positioning protrusions (14).

Images