Engineering machinery tool box with internal space adjusting function
By using threaded connections between threaded rods and threaded pipes and designing buffer components, the internal space of the engineering machinery toolbox can be adjusted, solving the problems of low space utilization and poor tool compatibility caused by fixed designs, and improving the practicality and safety of the toolbox.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XUZHOU CORUS CONSTR MASCH CO LTD
- Filing Date
- 2025-05-26
- Publication Date
- 2026-05-05
AI Technical Summary
Existing engineering machinery toolboxes have a fixed external structure design, resulting in low space utilization, poor tool compatibility, and difficulty in expansion.
The toolbox uses a threaded rod and threaded tube with a threaded connection structure, combined with a buffer component and a guide groove, to adjust the internal space of the toolbox. The toolbox volume can be expanded or reduced by the lateral movement of the threaded rod and the elastic compression of the buffer component.
It improves the space utilization and tool compatibility of the toolbox, enhances safety, simplifies tool management, and shortens job preparation time.
Smart Images

Figure CN224196783U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of engineering machinery toolboxes, specifically relating to engineering machinery toolboxes with internal space adjustment function. Background Technology
[0002] The construction machinery toolbox is a specialized piece of equipment tailored for the construction machinery industry. Its core design lies in its scientific internal structure, which centrally stores, systematically organizes, and facilitates the convenient carrying of various maintenance tools, testing equipment, fasteners, and consumables while providing enhanced protection, thus forming a complete tool management solution. In the daily operation of construction machinery, this toolbox covers the entire process of maintenance, troubleshooting, regular maintenance, and on-site construction. Its modular partition design (such as independent drawers, elastic straps, and adjustable dividers) can precisely adapt to the size and usage frequency of different tools, avoiding efficiency losses caused by mixing tools. Simultaneously, its high-strength outer shell, shock-absorbing lining, and sealed structure effectively resist impacts, moisture, and dust intrusion under harsh working conditions, ensuring stable tool performance and reducing the risk of downtime due to tool damage. By optimizing the space utilization and ease of access for tool management, this toolbox significantly shortens work preparation time, improves on-site response speed, and becomes a key support for ensuring the efficient and safe operation of construction machinery.
[0003] Currently, most mainstream engineering machinery toolboxes on the market feature a fixed external structure design. Their internal storage space is limited to a fixed, non-adjustable configuration during the production stage through molding or welding processes. While this design simplifies the production process and reduces costs, it reveals significant problems in actual use, such as low space utilization, poor tool compatibility, and difficulty in expansion. Utility Model Content
[0004] The purpose of this utility model is to provide an engineering machinery toolbox with internal space adjustment function, which aims to solve the significant problems of the fixed external structure design of existing engineering machinery toolboxes, which exposes in actual use such as low space utilization, poor tool compatibility and difficulty in expansion.
[0005] To achieve the above objectives, this utility model provides the following technical solution: an engineering machinery toolbox with internal space adjustment function, comprising a toolbox body and a lid, wherein the lid is hinged to the end of the toolbox body, an extension body is inserted into the side wall of the toolbox body, a threaded tube is connected through the side surface of the toolbox body, a matching threaded rod is inserted through the inside of the threaded tube, a bearing seat mounted on the surface of the extension body is sleeved on the surface of the threaded rod, and a buffer assembly is connected between the toolbox body and the lid.
[0006] As a preferred embodiment of the engineering machinery toolbox with internal space adjustment function of this utility model, the side surface of the extended box is provided with a guide groove, and the inside of the toolbox is connected with a guide rail adapted to the guide groove to enable the extended box to move axially.
[0007] In a preferred embodiment of the engineering machinery toolbox with internal space adjustment function of this utility model, the threaded rod and the threaded pipe are threadedly connected.
[0008] As a preferred embodiment of the engineering machinery toolbox with internal space adjustment function of this utility model, the buffer assembly includes a buffer seat connected to the side surface of the toolbox body, a guide hole opened on the surface of the buffer seat, and a guide rod passing through the inside of the guide hole and connected to the surface of the box cover.
[0009] As a preferred embodiment of the engineering machinery toolbox with internal space adjustment function of this utility model, the buffer assembly further includes a limiting block connected to the end of the guide rod and a spring strip connected between the box cover and the buffer seat and sleeved on the surface of the guide rod.
[0010] As a preferred embodiment of the engineering machinery toolbox with internal space adjustment function of this utility model, the guide rod is arc-shaped and its center is located on the central axis of the hinge between the toolbox body and the lid.
[0011] Compared with the prior art, the beneficial effects of this utility model are:
[0012] In this invention, when the threaded rod rotates inside the threaded tube, it can move laterally and drive the extension box to move away from the toolbox body through the bearing seat. When the extension box moves to the farthest end of its travel, the internal space formed by the toolbox body and the extension box will expand, thereby adjusting the internal space of the toolbox and improving the practicality of the toolbox.
[0013] In this invention, when the lid closes, the guide rod slides inside the guide hole and compresses the spring strip. When the spring strip is compressed by the force, it can slide by the elasticity of the spring strip, thereby preventing the excessive force when the lid closes from causing pinching injuries and improving the safety of using the toolbox. Attached Figure Description
[0014] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:
[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0016] Figure 2 This is a side view of the structure of this utility model;
[0017] Figure 3 This is an exploded view of the main structure of this utility model;
[0018] Figure 4 This is a schematic diagram of the connection structure after the extension of the box body of this utility model;
[0019] Figure 5 This is a schematic diagram of the buffer component structure of this utility model;
[0020] Figure 6 This is an exploded view of the buffer component structure of this utility model;
[0021] Figure 7 This utility model Figure 4 Schematic diagram of the structure at point A in the middle.
[0022] In the diagram: 1. Toolbox body; 2. Box cover; 3. Extension box; 4. Guide groove; 5. Guide rail; 6. Threaded tube; 7. Threaded rod; 8. Bearing seat; 9. Buffer assembly; 901. Buffer seat; 902. Guide hole; 903. Guide rod; 904. Limiting block; 905. Spring bar. 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 1-7 The present invention provides the following technical solution: an engineering machinery toolbox with internal space adjustment function, including a toolbox body 1 and a lid 2. The lid 2 is connected to the end of the toolbox body 1 by a hinge. An extension body 3 is inserted into the side wall of the toolbox body 1. A threaded tube 6 is connected through the side surface of the toolbox body 1. A matching threaded rod 7 is passed through the inside of the threaded tube 6. A bearing seat 8 installed on the surface of the extension body 3 is sleeved on the surface of the threaded rod 7. A buffer assembly 9 is connected between the toolbox body 1 and the lid 2.
[0025] Preferably, the side surface of the extension box 3 is provided with a guide groove 4, and the inside of the toolbox 1 is connected with a guide rail 5 that is adapted to the guide groove 4 so that the extension box 3 can move axially.
[0026] In practical use, when the extension box 3 is subjected to a force, it can drive the guide rail 5 to slide on the surface of the guide groove 4. This can limit the movement direction of the extension box 3, thereby preventing the extension box 3 from shifting position during movement.
[0027] Preferably, the threaded rod 7 and the threaded tube 6 are threadedly connected.
[0028] In practical use, the threaded rod 7 rotates inside the threaded tube 6 and can move laterally through the inertia of the threaded connection. When the threaded rod 7 moves laterally, it can exert a force on the extension box 3 through the bearing seat 8. When the extension box 3 is subjected to the force, it can drive the extension box 3 to move laterally, thereby adjusting the position of the extension box 3. This allows for adjustment of the internal volume of the toolbox 1.
[0029] Preferably, the buffer assembly 9 includes a buffer seat 901 connected to the side surface of the toolbox body 1, a guide hole 902 opened on the surface of the buffer seat 901, and a guide rod 903 passing through the inside of the guide hole 902 and connected to the surface of the box cover 2.
[0030] Preferably, the buffer assembly 9 further includes a limiting block 904 connected to the end of the guide rod 903 and a spring strip 905 connected between the box cover 2 and the buffer seat 901 and sleeved on the surface of the guide rod 903.
[0031] In practical use, when the lid 2 is closed, it can drive the guide rod 903 to slide inside the guide hole 902. The rotation range of the guide rod 903 can be limited by the setting of the limit block 904, thereby effectively limiting the opening angle of the lid 2.
[0032] Preferably, the guide rod 903 is arc-shaped and its center is located on the central axis of the hinge between the toolbox body 1 and the lid 2.
[0033] In actual use, the spring strip 905 will be squeezed during the rotation and closing of the lid 2. When the spring strip 905 is squeezed and compressed, it can slide by its own elasticity.
[0034] Working principle: When using the toolbox body 1, when the internal space of the toolbox body 1 needs to be adjusted, the threaded rod 7 can be rotated. When the threaded rod 7 rotates inside the threaded tube 6, it can move laterally. When the threaded rod 7 moves laterally, it can drive the extension box 3 to move away from the toolbox body 1 through the bearing seat 8. When the extension box 3 moves to the farthest end of its stroke, the internal space formed by the toolbox body 1 and the extension box 3 will expand.
[0035] When the lid 2 is closed, the lid 2 drives the guide rod 903 to slide inside the guide hole 902. At the same time, the lid 2 squeezes the spring strip 905. When the spring strip 905 is compressed by the force, it can slide by the elastic force of the spring strip 905, so that the force when the lid 2 is closed is too large and causes pinching injury.
[0036] Finally, it should be noted that the above are merely preferred embodiments of this utility model and are not intended to limit the utility model. Although the utility model 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 this utility model should be included within the protection scope of this utility model.
Claims
1. An engineering machinery toolbox with internal space adjustment function, comprising a toolbox body (1) and a lid (2), characterized in that: The toolbox body (1) is hinged to a lid (2) at one end. An extension box (3) is inserted into the side wall of the toolbox body (1). A threaded tube (6) is connected through the side surface of the toolbox body (1). A matching threaded rod (7) is inserted through the inside of the threaded tube (6). A bearing seat (8) installed on the surface of the extension box (3) is fitted onto the surface of the threaded rod (7). A buffer assembly (9) is connected between the toolbox body (1) and the lid (2).
2. The engineering machinery toolbox with internal space adjustment function according to claim 1, characterized in that: The side surface of the extension box (3) is provided with a guide groove (4), and the inside of the toolbox (1) is connected with a guide rail (5) that is compatible with the guide groove (4) so that the extension box (3) can move axially.
3. The engineering machinery toolbox with internal space adjustment function according to claim 1, characterized in that: The threaded rod (7) and the threaded tube (6) are connected by threads.
4. The engineering machinery toolbox with internal space adjustment function according to claim 1, characterized in that: The buffer assembly (9) includes a buffer seat (901) connected to the side surface of the toolbox body (1), a guide hole (902) opened on the surface of the buffer seat (901), and a guide rod (903) passing through the inside of the guide hole (902) and connected to the surface of the box cover (2).
5. The engineering machinery toolbox with internal space adjustment function according to claim 4, characterized in that: The buffer assembly (9) also includes a limiting block (904) connected to the end of the guide rod (903) and a spring strip (905) connected between the box cover (2) and the buffer seat (901) and sleeved on the surface of the guide rod (903).
6. The engineering machinery toolbox with internal space adjustment function according to claim 5, characterized in that: The guide rod (903) is arc-shaped and its center is located on the central axis of the hinge between the toolbox body (1) and the lid (2).