Vehicle door limiting device for engineering machinery

By designing a door limiting device with connecting rods, support blocks, and magnetic components, the problems of complex installation and unstable limiting of existing devices have been solved, achieving simplified installation, improved limiting effect, reduced risk of paint film scratches, and improved painting quality.

CN223945930UActive Publication Date: 2026-02-27HUNAN ZOOMLION HEAVY SCIENCE & TECHNOLOGY CO LTD
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Patent Information

Application Number
CN202520157528.3
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-01-22
Publication Date
2026-02-27
Estimated Expiration
2035-01-22

AI Technical Summary

Technical Problem

The existing door limiting device is complicated and cumbersome to install, and the paint film is easily scratched during installation and removal. Moreover, the limiting effect is poor, which makes the door easy to loosen and affects the paint quality.

Method used

A door limiting device including a connecting rod, a support block, and a magnetic component was designed. It is clamped to the door frame of the cab through a clamping groove, hooked to the hole in the inner panel of the vehicle body, and the door is limited by the magnetic component, which simplifies the installation process and improves the limiting stability.

Benefits of technology

It simplifies installation, reduces the risk of paint film scratches, improves the limiting effect, ensures that the door is in a fixed open position, and improves the efficiency and quality of painting operations.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the field of engineering machinery, and discloses a vehicle door limiting device for engineering machinery, the vehicle door limiting device comprises a connecting rod and a supporting block, a hook is formed at a first end of the connecting rod, a second end of the connecting rod is connected with a magnetic attraction piece, the hook and the magnetic attraction piece are arranged on the same side of the connecting rod in the transverse direction, and an opening of the hook faces the second end of the connecting rod. The supporting block is fixedly connected with the connecting rod and extends longitudinally from the connecting rod, and a clamping groove is formed in the end, away from the connecting rod, of the supporting block. The vehicle door limiting device is clamped at the door frame of a cab through the clamping groove and the hook is hooked on the hole in the inner plate of the vehicle body so as to be installed on the vehicle body, the installation process is simple and convenient, the operation efficiency is effectively improved, meanwhile, the risk that a paint film is scratched is effectively reduced, and the vehicle door is limited in a magnetic attraction mode through the magnetic attraction piece. Good, stable and reliable limiting effects are achieved, and the phenomenon that the paint spraying quality is affected due to car door looseness is avoided.
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Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of engineering machinery, specifically relates to a door limiting device for engineering machinery. BACKGROUND

[0002] In the process of engineering machinery processing, such as excavator, crane and so on, all are equipped with the process flow of painting the door of cab, in the process flow, in order to prevent the door from touching the door frame of cab, leading to the situation that paint is adhered after spraying and cannot be opened, door limiting device is arranged between the door and the door frame, so that the door is kept in the open position. But in actual use, the existing door limiting device has the problems of complex and tedious installation process, easy to scratch paint film in the process of assembly and disassembly and poor limiting effect, which leads to loose door. UTILITARY MODEL CONTENTS

[0003] In view of the above-mentioned deficiencies or defects in the prior art, the utility model provides a door limiting device for engineering machinery, which aims to solve the technical problems of the existing door limiting device, such as complex and tedious installation process, easy to scratch paint film in the process of assembly and disassembly and poor limiting effect, which leads to loose door.

[0004] To achieve the above-mentioned purpose, the utility model provides a door limiting device for engineering machinery, which comprises:

[0005] The first end of the connecting rod is formed with a hook, and the second end is connected with a magnetic attraction piece, the hook and the magnetic attraction piece are arranged on the same side of the connecting rod in the transverse direction, and the opening of the hook faces the second end of the connecting rod.

[0006] The support block is fixedly connected with the connecting rod and extends from the connecting rod in the longitudinal direction, and one end of the support block away from the connecting rod is formed with a clamping groove.

[0007] Optionally, one end of the support block away from the connecting rod is bent towards the first end of the connecting rod.

[0008] Optionally, the door limiting device further comprises a clamping rod, the clamping rod is threaded through the second end of the support block and can be telescopically extended into the clamping groove from the side wall of the clamping groove.

[0009] Optionally, the clamping rod is threadedly connected with the second end of the support block.

[0010] Optionally, one end of the clamping rod threaded out of the second end of the support block is fixedly connected with a handle.

[0011] Optionally, the connecting rod is formed with an avoiding groove between the first end and the second end of the connecting rod and arranged on the same side of the connecting rod in the transverse direction as the hook.

[0012] Optionally, the magnetic member is a high-temperature-resistant magnet.

[0013] Optionally, the door limiting device further comprises an adjusting rod movably connected to the second end of the connecting rod in the transverse direction, and the magnetic member is fixedly connected to one end of the adjusting rod.

[0014] Optionally, the second end of the connecting rod is fixedly connected with a cylindrical nut arranged in the transverse direction, and the adjusting rod is arranged in the cylindrical nut and threadedly connected with the cylindrical nut.

[0015] Optionally, the magnetic member is detachably connected to one end of the adjusting rod.

[0016] Through the above technical solution, in the process of painting the door of the engineering machinery, the clamping groove of the door limiting device is clamped at the door frame of the cab, and the hook is hooked on the hole on the inner panel of the vehicle body, and then the magnetic member is magnetically attracted to the door. By setting up in this way, the door limiting device can limit the door and keep it in a fixed open position. The door limiting device of the utility model is clamped at the door frame of the cab and hooked on the hole on the inner panel of the vehicle body to be installed on the vehicle body. The installation process is simple and convenient, effectively improves the work efficiency, effectively reduces the risk of paint film damage, and limits the door by the magnetic attraction of the magnetic member. It has good, stable and reliable limiting effect, avoids loose door and affects the paint quality.

[0017] Other features and advantages of the utility model will be described in detail in the following specific embodiment part. BRIEF DESCRIPTION OF DRAWINGS

[0018] The drawings are used to provide further understanding of the utility model and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the utility model, but do not constitute a limitation on the utility model. In the drawings:

[0019] Figure 1 It is the structure schematic view of the door limiting device in one embodiment of the utility model.

[0020] Explanation of reference signs:

[0021] 1 connecting rod

[0022] 11 avoiding groove

[0023] 2 support block

[0024] 21 clamping groove

[0025] 3 hook

[0026] 4 magnetic member

[0027] 5 clamping rod

[0028] 6 handle

[0029] 7 adjusting rod

[0030] 8 cylindrical nut DETAILED DESCRIPTION

[0031] The specific embodiments described hereinafter are intended to be illustrative only and are not intended to limit the scope of the present application. It should be understood that the specific embodiments described herein are merely illustrative and that many other configurations can be apparent to the skilled person in the art from the description provided herein.

[0032] It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other without conflict.

[0033] In the present application, unless otherwise stated, the orientation words such as "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the embodiments of the present application; the orientation words "inner" and "outer" refer to the inner and outer of the contour of each component itself.

[0034] The present application will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

[0035] Referring to the accompanying drawings Figure 1 The exemplary embodiments of the present application provide a door limiting device for engineering machinery, which comprises:

[0036] A connecting rod 1, a hook 3 is formed at the first end of the connecting rod 1, and a magnetic member 4 is connected at the second end of the connecting rod 1, the hook 3 and the magnetic member 4 are arranged on the same side of the connecting rod 1 in the transverse direction, and the opening of the hook 3 faces the second end of the connecting rod 1;

[0037] A support block 2 is fixedly connected with the connecting rod 1 and extends from the connecting rod 1 in the longitudinal direction, and a clamping groove 21 is formed at the end of the support block 2 away from the connecting rod 1.

[0038] In the process of painting the door of the engineering machinery, the clamping groove 21 of the door limiting device can be clamped at the door frame of the cab, and the hook 3 can be hooked on the hole on the inner panel of the vehicle body, and then the magnetic attraction member 4 can magnetically attract the door, so that the door can be limited by the door limiting device and kept in a fixed open position; the door limiting device of the embodiment is installed on the vehicle body by clamping the clamping groove 21 at the door frame of the cab and hooking the hook on the hole on the inner panel of the vehicle body, the installation process is simple and convenient, effectively improves the work efficiency, effectively reduces the risk of paint film damage, and limits the door by the magnetic attraction of the magnetic attraction member 4, has good, stable and reliable limiting effect, avoids the loosening of the door to affect the paint quality, and only needs to pull open the door when the inner surface of the door needs to be painted, the door is separated from the magnetic attraction member 4, the operation is simple and convenient.

[0039] Specifically, the first end of the connecting rod 1 can be formed by bending the hook 3; the support block 2 and the connecting rod 1 can be fixedly connected by welding.

[0040] In an alternative embodiment, referring to the accompanying drawings Figure 1 As shown in the figure, the end of the support block 2 away from the connecting rod 1 is bent towards the first end of the connecting rod 1. In this way, the stress of the whole door limiting device is more reasonable and balanced, and the stability of the door limiting device installed on the door frame can be improved.

[0041] In an alternative embodiment, referring to the accompanying drawings Figure 1 As shown in the figure, the door limiting device further comprises a clamping rod 5, which is connected to the second end of the support block 2 and can be telescopically extended into the clamping groove 21 from the side wall of the clamping groove 21. In this way, after the clamping groove 21 is clamped to the door frame, the clamping rod 5 can be adjusted in length to clamp the door frame, thereby effectively improving the firmness of the door limiting device clamped on the door frame. In actual application, the clamping rod 5 is adjusted in length according to the thickness of the door frame.

[0042] Specifically, an elastic clamping pad can be connected to the end of the clamping rod 5 extending into the clamping groove 21, which clamps the door frame through the elastic clamping pad, thereby avoiding direct contact between the clamping rod 5 and the door frame and mutual abrasion.

[0043] In an alternative embodiment, the clamping rod 5 is threadedly connected to the second end of the support block 2.

[0044] It can be understood that by rotating the clamping rod 5, the clamping rod 5 can be adjusted in length in the clamping groove 21 under the action of the threads.

[0045] Specifically, the second end of the support block 2 is provided with a threaded hole penetrating through the side wall of the clamping groove 21 to communicate with the clamping groove 21, and the clamping rod 5 with external threads is threaded into the threaded hole and threadedly connected with the threaded hole.

[0046] In an alternative embodiment, referring to Fig. 2, the second end of the clamping rod 5 is fixedly connected with a handle 6. In this way, the operator can rotate the clamping rod 5 by rotating the handle 6, so as to adjust the extension of the clamping rod 5, which is more labor-saving and convenient. Figure 1 Specifically, the handle 6 can be fixedly connected with the clamping rod 5 by welding.

[0047] In an alternative embodiment, referring to Fig. 2, the second end of the clamping rod 5 is fixedly connected with a handle 6. In this way, the operator can rotate the clamping rod 5 by rotating the handle 6, so as to adjust the extension of the clamping rod 5, which is more labor-saving and convenient.

[0048] Figure 1 As shown in Fig. 2, the link rod 1 is formed with an avoiding groove 11, which is located between the first end and the second end of the link rod 1 and is arranged on the same side of the hook 3 in the lateral direction of the link rod 1. In this way, the avoiding groove 11 can avoid the link rod 1 from interfering with the vehicle body.

[0049] Specifically, the specific position of the avoiding groove 11 on the link rod 1 is designed according to actual needs, and is generally arranged adjacent to the first end of the link rod 1.

[0050] In an alternative embodiment, the magnetic member 4 is a high-temperature-resistant magnet.

[0051] As can be understood, the high-temperature-resistant magnet will not have the phenomenon of magnetic force fading in a high-temperature environment, so as to avoid the problem that the magnetic force of the magnetic member 4 fades when the vehicle door is baked after being painted, resulting in insufficient magnetic force of the magnetic member 4 on the vehicle door.

[0052] In an alternative embodiment, referring to Fig. 2, the door limiting device further comprises an adjusting rod 7, which is movably connected with the second end of the link rod 1 in the lateral direction, and the magnetic member 4 is fixedly connected with one end of the adjusting rod 7. In this way, the position of the magnetic member 4 can be adjusted by moving the adjusting link rod 1, and in actual application, the magnetic member 4 can be better combined with the inner surface of the vehicle door by adjusting the position of the magnetic member 4, so as to stably adsorb the vehicle door. Figure 1 Specifically, the magnetic member 4 can be provided in a plate structure and arranged perpendicularly to the link rod 1.

[0053] In an alternative embodiment, referring to Fig. 2, the second end of the link rod 1 is fixedly connected with a cylindrical nut 8 arranged in the lateral direction, and the adjusting rod 7 is arranged in the cylindrical nut 8 and is threadedly connected with the cylindrical nut 8.

[0054] Figure 1 As can be understood, the adjusting rod 7 is rotated by rotating the adjusting rod 7, and under the action of the thread, the adjusting rod 7 can be moved relative to the cylindrical nut 8, so as to adjust the position of the magnetic member 4.

[0055]

[0056] ​​​Specifically, the cylindrical nut 8 is provided with a threaded hole, and the adjusting rod 7 with external threads is arranged in the threaded hole and is in threaded connection with the threaded hole.

[0057] In an alternative embodiment, the magnetic member 4 is detachably connected to one end of the adjusting rod 7. In this way, the convenience of replacing the magnetic member 4 is improved.

[0058] Specifically, one end of the adjusting rod 7 can be welded with a fixing sleeve, and the magnetic member 4 can be detachably fastened and connected in the fixing sleeve through bolts or other fasteners.

[0059] In the description of the present application, it should be understood that the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can be explicitly or implicitly included at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0060] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and other terms should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected or in communication with each other; it can be directly connected, or it can be indirectly connected through an intermediate medium, it can be the internal communication of two elements or the interaction relationship of two elements, unless otherwise specifically limited. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0061] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms is not necessarily for the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine the different embodiments or examples described in the present application and the features of different embodiments or examples without contradiction.

[0062] Although the embodiments of the present application have been shown and described above, it should be understood that the above embodiments are exemplary and cannot be understood as limiting the present application, and those skilled in the art can make changes, modifications, replacements and modifications to the above embodiments within the scope of the present application.

Claims

1. A door stop for a construction machine, characterized in that, The vehicle door limiting device comprises: a connecting rod (1), a hook (3) is formed at a first end of the connecting rod (1), a magnetic member (4) is connected at a second end of the connecting rod (1), the hook (3) and the magnetic member (4) are arranged at the same side of the connecting rod (1) in the transverse direction, and an opening of the hook (3) faces the second end of the connecting rod (1); a supporting block (2) is fixedly connected with the connecting rod (1) and extends from the connecting rod (1) in the longitudinal direction, and a clamping groove (21) is formed at an end of the supporting block (2) away from the connecting rod (1).

2. A door stop for a working machine according to claim 1, characterized in that The end of the supporting block (2) away from the connecting rod (1) is bent towards the first end of the connecting rod (1).

3. A door stop for a working machine according to claim 1, characterized in that The vehicle door limiting device further comprises a clamping rod (5), the clamping rod (5) is threaded through a second end of the supporting block (2) and can be telescopically extended into the clamping groove (21) from a side wall of the clamping groove (21).

4. A door stop for a working machine according to claim 3, characterized in that The clamping rod (5) is threadedly connected with the second end of the supporting block (2).

5. A door stop for a working machine according to claim 4, characterized in that A handle (6) is fixedly connected with an end of the clamping rod (5) threaded out of the second end of the supporting block (2).

6. A door stop for a working machine according to claim 1, characterized in that The connecting rod (1) is formed with an avoiding groove (11) between the first end and the second end of the connecting rod (1) and arranged at the same side of the hook (3) in the transverse direction of the connecting rod (1).

7. A door stop for a working machine according to claim 1, characterized in that The magnetic member (4) is a high-temperature-resistant magnet.

8. A door stop for a working machine according to claim 7, characterized in that The vehicle door limiting device further comprises an adjusting rod (7), the adjusting rod (7) is movably threaded through the second end of the connecting rod (1) in the transverse direction, and the magnetic member (4) is fixedly connected at an end of the adjusting rod (7).

9. A door stop for a working machine according to claim 8, characterized in that The second end of the connecting rod (1) is fixedly connected with a cylindrical nut (8) arranged in the transverse direction, the adjusting rod (7) is threaded in the cylindrical nut (8) and threadedly connected with the cylindrical nut (8).

10. A door stop for a working machine according to claim 8, characterized in that The magnetic member (4) is detachably connected at the end of the adjusting rod (7).