A rear supporting wheel folding device of a hook arm vehicle based on double oil cylinder driving

Abstract

This utility model discloses a folding device for the rear support wheel of a hooklift truck based on dual-cylinder drive, relating to the field of special vehicle technology. It includes a first part and a second part, with the first part located at the top of the second part. The first part consists of a longitudinal beam fixedly connected to the frame via U-bolts. A fixing frame is welded to one end of the longitudinal beam, and symmetrically arranged upper supports are welded to one side of the fixing frame. This utility model uses dual-cylinder synchronous control of the support wheel to avoid failure risks, resulting in more stable unfolding / folding actions. The dual cylinders can also distribute the force, making the ground pressure on the support wheel more uniform and improving safety during heavy-duty operations. The folded support wheel is close to the frame to reduce the turning radius and avoid interference with obstacles. It effectively solves the problems of uneven unfolding of traditional mechanical support wheels and frame deformation caused by uneven loading of hydraulic single cylinders, significantly improving the operating efficiency and reliability of hooklift trucks in scenarios such as garbage transfer and equipment loading / unloading.

Description

Technical Field

[0001] This utility model relates to the field of special vehicle technology, specifically to a folding device for the rear support wheel of a hooklift vehicle based on dual-cylinder drive. Background Technology

[0002] The hooklift truck's rear support wheel folding device is a hydraulically driven safety auxiliary mechanism primarily used to improve vehicle stability during loading and unloading operations. Its core consists of a split roller track, a hydraulic drive rod, and a linkage pin, achieving vertical folding and unfolding through telescopic rollers.

[0003] Traditional mechanical or hydraulic single-cylinder support wheels are prone to frame deformation due to uneven loading and there is a risk of cylinder failure, which affects operational stability. In addition, when folded, the support wheels cannot be close to the frame, increasing the turning radius and potentially interfering with obstacles, limiting operation in narrow environments. Utility Model Content

[0004] The purpose of this invention is to provide a folding device for the rear support wheel of a hooklift truck based on dual-cylinder drive, so as to solve the technical problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a folding device for the rear support wheel of a hooklift truck based on dual hydraulic cylinder drive, comprising a first part and a second part, wherein the first part is located at the top of the second part;

[0006] Part 1: The longitudinal beam and the frame are fixedly connected by U-bolts. A fixing frame is welded to one end of the longitudinal beam. A symmetrically arranged upper bracket is welded to one side of the fixing frame. A baffle is fixedly connected to one end of the frame on the left side of the fixing frame by bolts. A frame vertical support is welded to the bottom of the frame. The baffle, the frame vertical support and the swivel support are welded together to fix the left and right parts. A symmetrically distributed swivel bracket is welded to one end of the swivel support.

[0007] Part Two: The inner side of the rotating bracket is rotatably connected to a lower bracket vertical support. A lower bracket support is welded between the two lower bracket vertical supports. A symmetrically arranged lower bracket is welded to the side of the lower bracket support near the upper bracket. A positioning sleeve is welded to the bottom inner side of the lower bracket vertical support. A positioning sleeve is fixedly connected between the two positioning sleeves. A support wheel is fixedly connected to the outside of the positioning steel pipe. The positioning steel pipe is used to install the support wheel. The support wheel is used to contact the ground to achieve support. A hydraulic cylinder is installed between the upper bracket and the lower bracket.

[0008] Preferably, the lower support is located directly below the rotary support.

[0009] Preferably, the positioning steel pipe and the positioning sleeve are fixedly connected by bolts.

[0010] Preferably, the support wheel and the positioning steel pipe are fixedly connected by bolts.

[0011] Preferably, two hydraulic cylinders are symmetrically arranged, and the hydraulic cylinders are used to drive the vertical support of the lower bracket to deflect.

[0012] Preferably, the hydraulic cylinder is rotatably connected to the upper support, the lower support, and the rotating support to the vertical support of the lower support via pins.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This invention uses dual hydraulic cylinders to synchronously control the support wheel, avoiding the risk of failure, making the unfolding / folding action more stable, and the dual hydraulic cylinders can distribute the force, making the ground pressure of the support wheel more uniform, thus improving the safety of heavy-duty operations.

[0015] 2. This invention enables the folded support wheel to fit snugly against the vehicle frame, thereby reducing the turning radius and avoiding interference with obstacles.

[0016] 3. This invention can be manually controlled or integrated with an electronic control system to achieve one-button retraction and extension, reducing the intensity of manual operation.

[0017] 4. This invention can effectively solve the problems of uneven unfolding of traditional mechanical support wheels and frame deformation caused by uneven loading of hydraulic single cylinders, and significantly improve the operating efficiency and reliability of hooklift trucks in garbage transfer, equipment loading and unloading and other scenarios. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention in a supported state;

[0019] Figure 2 This is a schematic diagram of the main structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the left-side structure of this utility model;

[0021] Figure 4 This is a three-dimensional structural diagram of the present invention in its retracted state.

[0022] In the diagram: 1. Longitudinal beam; 2. Frame; 3. Fixing frame; 4. Upper bracket; 5. Pin; 6. Baffle; 7. Frame vertical support; 8. Rotary support; 9. Rotary bracket; 10. Lower bracket support; 11. Lower bracket; 12. Lower bracket vertical support; 13. Positioning sleeve; 14. Positioning steel pipe; 15. Support wheel; 16. Hydraulic cylinder. Detailed Implementation

[0023] 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.

[0024] Please see Figures 1-4 This utility model provides a technical solution: a hook arm truck rear support wheel folding device based on dual hydraulic cylinder drive, comprising a first part and a second part, wherein the first part is located at the top of the second part;

[0025] Part 1: The longitudinal beam 1 and the frame 2 are fixedly connected by U-bolts. A fixing frame 3 is welded to one end of the longitudinal beam 1. A symmetrically arranged upper bracket 4 is welded to one side of the fixing frame 3. A baffle 6 is fixedly connected to one end of the frame 2 on the left side of the fixing frame 3 by bolts. A frame vertical support 7 is welded to the bottom of the frame 2. The baffle 6, the frame vertical support 7 and the rotating support 8 are welded together to fix the left and right parts. A symmetrically distributed rotating bracket 9 is welded to one end of the rotating support 8.

[0026] Part Two: The inner side of the rotating support 9 is rotatably connected to a lower support vertical brace 12. A lower support 10 is welded between the two lower support vertical braces 12 directly below the rotating support 8. A symmetrically arranged lower support 11 is welded to the side of the lower support 10 near the upper support 4. A positioning sleeve 13 is welded to the bottom inner side of the lower support vertical brace 12. A positioning steel pipe 14 is bolted between the two positioning sleeves 13. A support wheel 15 is bolted to the outside of the positioning steel pipe 14. The positioning steel pipe 14 is used to install the support wheel 15. The support wheel 15 is used to contact the ground to provide support. A hydraulic cylinder 16 is installed between the upper support 4 and the lower support 11. The hydraulic cylinder 16 is used to drive the lower support vertical brace 12 to deflect. The hydraulic cylinder 16 is rotatably connected to the upper support 4, the lower support 11, and the rotating support 9 and the lower support vertical brace 12 through a pin 5.

[0027] Specifically, since the hydraulic cylinder 16 is hinged to the fixed frame 3 and the lower support 10, when the hydraulic cylinder 16 is working and extending, it pushes the lower support 10, the lower support vertical support 12 and the support wheel 15 to deflect and open, thereby preventing accidents. When the hydraulic cylinder 16 is working and retracting, it pulls the lower support 10, the lower support vertical support 12 and the support wheel 15 to deflect and retract, preventing accidents caused by collisions with the ground during driving.

[0028] like Figures 1-4As shown, when the hydraulic cylinder 16 extends or retracts, it pushes the support wheel 15 arm to rotate around the hinge point of the frame 2, thereby enabling the support wheel 15 to switch between the vertical working position and the horizontal storage position.

[0029] The hydraulic cylinder 16 has a built-in hydraulic lock to ensure stepless locking in the supported state.

[0030] The extension and retraction of the hydraulic cylinder 16 are achieved by manually controlling the valve body or remote control. When the hooklift truck needs to hook the box, the hydraulic cylinder 16 is activated and extended. When the hydraulic cylinder 16 is extended, the second part will rotate downward along the rotating support 8 of the first part, so that the support wheel 15 contacts the ground. The support wheel 15 provides support to prevent accidents. When it is not needed, the hydraulic cylinder 16 is activated and retracted to prevent collisions with the ground during driving.

[0031] Electrical equipment (including but not limited to motors, electric actuators, etc.) is safely powered by an external power source and controlled by a control box. Any content not described in detail in this specification is prior art known to those skilled in the art.

[0032] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A folding device for the rear support wheel of a hooklift truck based on dual-cylinder drive, comprising a first part and a second part, wherein the first part is located at the top of the second part; characterized in that: Part 1: The longitudinal beam (1) and the frame (2) are fixedly connected by U-bolts. A fixed frame (3) is welded to one end of the longitudinal beam (1). A symmetrically arranged upper bracket (4) is welded to one side of the fixed frame (3). A baffle (6) is fixedly connected to one end of the frame (2) on the left side of the fixed frame (3) by bolts. A frame vertical support (7) is welded to the bottom of the frame (2). The baffle (6), the frame vertical support (7), and the rotating support (8) are welded together to fix the left and right parts. A symmetrically distributed rotating bracket (9) is welded to one end of the rotating support (8). Part 2: The inner side of the rotating bracket (9) is rotatably connected to the lower bracket vertical support (12), and the two lower bracket vertical supports (12) are welded together with the lower bracket support (10). The lower bracket support (10) is welded together with the symmetrically arranged lower brackets (11) on the side of the upper bracket (4). The bottom of the inner side of the lower bracket vertical support (12) is welded together with the positioning sleeve (13). The bottom of the inner side of the lower bracket vertical support (12) is welded together with the positioning sleeve (13). The two positioning sleeves (13) are fixedly connected together with the positioning steel pipe (14). The outside of the positioning steel pipe (14) is fixedly connected with the support wheel (15). The positioning steel pipe (14) is used to install the support wheel (15). The support wheel (15) is used to contact the ground to achieve support. The upper bracket (4) and the lower bracket (11) are connected together with the hydraulic cylinder (16).

2. The hooklift truck rear support wheel folding device based on dual-cylinder drive according to claim 1, characterized in that: The lower support (10) is located directly below the rotating support (8).

3. The hooklift truck rear support wheel folding device based on dual-cylinder drive according to claim 1, characterized in that: The positioning steel pipe (14) and the positioning sleeve (13) are fixedly connected by bolts.

4. The hooklift truck rear support wheel folding device based on dual-cylinder drive according to claim 1, characterized in that: The support wheel (15) and the positioning steel pipe (14) are fixedly connected by bolts.

5. A hooklift truck rear support wheel folding device based on dual-cylinder drive according to claim 1, characterized in that: Two hydraulic cylinders (16) are symmetrically arranged, and the hydraulic cylinders (16) are used to drive the lower support vertical brace (12) to deflect.

6. A hooklift truck rear support wheel folding device based on dual-cylinder drive according to claim 1, characterized in that: The oil cylinder (16) is rotatably connected to the upper bracket (4), the lower bracket (11), and the rotating bracket (9) and the lower bracket vertical support (12) via pins (5).

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