Telescopic door stop special for industrial factory building

By designing a telescopic door stop and using a spring to push out the inner sleeve to clamp the door, the problem of easy damage to the large doors of industrial plants when they are constantly open is solved, and the door can be stably kept open and protected.

CN223893983UActive Publication Date: 2026-02-10CHINA NUCLEAR IND HUAXING CONSTR
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Patent Information

Application Number
CN202520270706.3
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-02-20
Publication Date
2026-02-10
Estimated Expiration
2035-02-20

AI Technical Summary

Technical Problem

Industrial plant doors are prone to damage to the door frame, door leaf and exterior wall due to wind load rotation when they are open, and existing technology lacks an effective fixing structure.

Method used

Design a telescopic door stop comprising a base, an outer sleeve, an inner sleeve, a nut, a spring, a screw, a top seat, and a clamping structure. The spring pushes out the inner sleeve to clamp the door, adapting to different indoor and outdoor height differences, and the clamping structure keeps the door open.

Benefits of technology

It enables the gate to be opened stably and continuously, protects the door frame and exterior wall, adapts to different height differences, does not change the gate structure, occupies little space, and has customizable adaptability.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a special telescopic door stop for industrial factory building, which comprises a base, an outer sleeve, an inner sleeve, a nut, a spring, a screw rod, a top seat and a clamping structure, the base is used for being installed on a terrace, the upper end of the base is connected with the outer sleeve, the nut is arranged on the base and located on the inner side of the outer sleeve, the inner sleeve is slidably arranged in the outer sleeve, and the clamping structure is arranged on the inner sleeve. A spring used for driving the inner sleeve to extend out of the outer sleeve is connected between the lower end of the inner sleeve and the base, a screw capable of being in threaded connection with the nut is further arranged at the lower end of the inner sleeve, a top base is installed at the upper end of the inner sleeve, and a clamping structure used for clamping a door leaf is arranged on the top base. A door leaf is clamped through the popped-out clamping structure, so that the normally-open state of a gate is kept, the device can be suitable for gates with different indoor and outdoor height differences, when the device is not used, the inner sleeve is pressed downwards and rotated, and the screw at the lower end of the inner sleeve is screwed into the nut, so that the occupied space of the device is reduced, and the device is convenient to use. And other structures can be protected to a certain extent through the outer sleeve.
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Description

Technical Field

[0001] This utility model relates to the field of building construction technology, specifically to a telescopic door stop for industrial plants. Background Technology

[0002] Many industrial plants are designed with outward-opening large doors. In the design of industrial plants, there is a height difference of 20 cm to 60 cm between the indoor and outdoor ground levels. During operation or use inside the plant, many doors need to be opened for a period of time. Without a fixed door stop or other structure, the door will rotate around the hinges under wind load due to the height difference with the ground. This can easily cause impact damage to the installed door frame, door leaf, hinges, etc. In addition, some doors without special processing of the door frame can cause damage to the external corner of the exterior wall.

[0003] Therefore, there is an urgent need for a telescopic gate stop specifically designed for industrial plants to solve the problem that existing large doors in industrial plants are not convenient to keep open all the time. Utility Model Content

[0004] This utility model addresses the shortcomings of existing technologies by providing a telescopic door stop specifically designed for industrial plants, thus solving the problem that existing large doors in industrial plants are not convenient to keep open at all times.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A telescopic door stop for industrial plants is characterized by comprising a base, an outer sleeve, an inner sleeve, a nut, a spring, a screw, a top seat, and a clamping structure. The base is installed on the ground, and the upper end of the base is connected to the outer sleeve. The nut is located on the inner side of the outer sleeve on the base. The inner sleeve is slidably disposed within the outer sleeve. A spring for driving the inner sleeve to extend out of the outer sleeve is connected between the lower end of the inner sleeve and the base located on the inner side of the outer sleeve. The lower end of the inner sleeve is also provided with a screw that can be threadedly connected to the nut. A top seat is installed on the upper end of the inner sleeve, and the top seat is provided with a clamping structure for clamping the door leaf.

[0007] To optimize the above technical solution, the specific measures also include:

[0008] Furthermore, the clamping structure includes a baffle, a clamping plate, and a push rod. A baffle is symmetrically provided on both sides of the upper end of the top seat, and two clamping plates are provided between the two baffles. The two clamping plates are connected to the adjacent baffles by push rods, and the two push rods are used to drive the two clamping plates to move closer or further apart.

[0009] Furthermore, the push rod is an electrically telescopic rod.

[0010] Furthermore, the push rod is an adjusting screw, the baffle is provided with a threaded hole, the adjusting screw is threaded in the threaded hole on the baffle, and the end of the adjusting screw passing through the threaded hole is rotatably connected to the side wall of the adjacent clamp plate.

[0011] Furthermore, a nut is provided at the end of the adjusting screw away from the clamp plate.

[0012] Furthermore, a slide rail is provided between the two baffles, and both clamping plates are slidably connected to the slide rail. The two push rods are used to drive the clamping plates to move closer to or further away from each other along the slide rail, respectively.

[0013] Furthermore, a rubber pad is provided on each of the two clamping plates on opposite sides.

[0014] Furthermore, a rotating plate is rotatably provided at the lower end of the inner sleeve, and the upper end of the spring is connected to the lower end of the rotating plate.

[0015] Furthermore, the base is provided with several expansion bolts, which pass vertically through the base for connecting to the ground.

[0016] Furthermore, several of the expansion bolts are arranged around the outer sleeve array on the base.

[0017] The beneficial effects of this utility model are:

[0018] This utility model, through the arrangement of a base, outer sleeve, inner sleeve, nut, spring, screw, top seat, and clamping structure, allows the device to be pre-installed at the desired opening position of the factory gate leaf via the base. In use, the spring pushes out the inner sleeve, and the clamping structure on the top seat holds the gate leaf, conveniently maintaining the gate in a constantly open state without affecting or altering the gate's structural design. Furthermore, the outer sleeve, inner sleeve, and spring configuration allows for easy adaptation to gates with varying indoor and outdoor elevation differences. The lengths of the outer sleeve, inner sleeve, and spring can be adjusted according to specific needs, enabling customized processing to meet various operating conditions. When not in use, the inner sleeve is pressed down and rotated, causing the screw at the lower end of the inner sleeve to screw into the nut, thus reducing the space occupied by the device and providing some protection to other structures via the outer sleeve.

[0019] This invention allows for adjustment of the distance between the two clamping plates according to the thickness of different door panels, thereby ensuring greater stability of the door panel after it is embedded between the clamping plates and ensuring the stability of the door when it is opened. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of a telescopic door stop for industrial plants proposed in this utility model.

[0021] Figure 2 for Figure 1 Enlarged view of the structure at point A in the middle;

[0022] Figure 3 This is a three-dimensional structural diagram of a telescopic door stop for industrial plants proposed in this utility model.

[0023] Reference numerals in the attached diagram: 1. Base; 2. Expansion bolt; 3. Nut; 4. Spring; 5. Screw; 6. Sealing plate; 7. Outer sleeve; 8. Inner sleeve; 9. Top seat; 10. Slide rail; 11. Push rod; 12. Clamp plate; 13. Rubber gasket; 14. Baffle. Detailed Implementation

[0024] The present invention will now be described in detail with reference to the accompanying drawings.

[0025] As attached Figure 1 and attached Figure 3 As shown in the figure, an embodiment of the present invention provides a telescopic door stop for industrial plants, comprising a base 1, an outer sleeve 7, an inner sleeve 8, a nut 3, a spring 4, a screw 5, a top seat 9, and a clamping structure. The base 1 is installed on the ground. The upper end of the base 1 is connected to the outer sleeve 7. The nut 3 is provided on the base 1 inside the outer sleeve 7. The inner sleeve 8 is slidably disposed in the outer sleeve 7. The lower end of the inner sleeve 8 is connected to the base 1 inside the outer sleeve 7 by a spring 4 for driving the inner sleeve 8 to extend out of the outer sleeve 7. The lower end of the inner sleeve 8 is also provided with a screw 5 that can be threadedly connected to the nut 3. The upper end of the inner sleeve 8 is installed with a top seat 9, and the top seat 9 is provided with a clamping structure for clamping the door leaf.

[0026] This utility model, through the arrangement of a base 1, an outer sleeve 7, an inner sleeve 8, a nut 3, a spring 4, a screw 5, a top seat 9, and a clamping structure, allows the device to be pre-installed at the desired opening position of the factory gate via the base 1. In use, the spring 4 pushes out the inner sleeve 8, and the clamping structure on the top seat 9 holds the gate open, thus conveniently maintaining the gate in a normally open state without affecting or altering the gate's structural design. Furthermore, the outer sleeve 7, inner sleeve 8, and spring 4 are adaptable to gates with varying indoor and outdoor elevation differences. The lengths of the outer sleeve 7, inner sleeve 8, and spring 4 can be adjusted to suit different working conditions. When not in use, the inner sleeve 8 is pressed down and rotated, causing the screw 5 at the lower end of the inner sleeve 8 to screw into the nut 3, reducing the space occupied by the device and providing some protection to other structures via the outer sleeve 7.

[0027] As attached Figure 2As shown, in another specific embodiment based on the above, the clamping structure includes a baffle 14, a clamping plate 12, and a push rod 11. A baffle 14 is symmetrically arranged on both sides of the upper end of the top seat 9. Two clamping plates 12 are arranged between the two baffles 14. The two clamping plates 12 are connected to the adjacent baffles 14 via push rods 11. The two push rods 11 are used to drive the two clamping plates 12 closer together or further apart. In this way, the distance between the two clamping plates 12 can be adjusted according to the thickness of different door leaves, thereby ensuring greater stability of the door leaf after it is embedded between the clamping plates 12, and ensuring the stability of the door after it is opened.

[0028] The aforementioned push rod 11 can be an electrically telescopic rod. The distance between the two clamping plates 12 can be adjusted and limited by the electrically telescopic rod.

[0029] The aforementioned push rod 11 also employs an adjusting screw. A threaded hole is provided on the baffle 14, and the adjusting screw is threaded into this hole. The end of the adjusting screw passing through the threaded hole is rotatably connected to the side wall of the adjacent clamping plate 12. In use, rotating the corresponding adjusting screw as needed pushes the corresponding clamping plate 12, completing the clamping and adjustment of the door leaf, and limiting its position under the action of the threaded connection. A nut is provided at the end of the adjusting screw away from the clamping plate 12 to facilitate its operation.

[0030] In a further embodiment based on the above, a slide rail 10 is provided between the two baffles 14, and both clamping plates 12 are slidably connected to the slide rail 10. Two push rods 11 are used to drive the clamping plates 12 to move closer or further apart along the slide rail 10, respectively. In this way, the stability of the clamping plates 12 driving can be increased by the slide rail 10.

[0031] In a further embodiment based on the above, a rubber pad 13 is provided on each of the two clamping plates 12 on opposite sides. This increases the stability of the door leaf clamping.

[0032] In another specific embodiment based on the above, a rotating plate 6 is rotatably provided at the lower end of the inner sleeve 8, and the upper end of the spring 4 is connected to the lower end of the rotating plate 6. This facilitates the rotation of the inner sleeve 8 during use, thereby making it easier to screw the screw 5 into the nut 3.

[0033] In another specific embodiment based on the above, the base 1 is provided with several expansion bolts 2, which vertically pass through the base 1 for connecting to the ground. The several expansion bolts 2 are arranged in an array around the outer sleeve 7 on the base 1 to ensure the stability of the base 1.

[0034] The methods of using this utility model device include:

[0035] Implementation Status 1:

[0036] When the door is closed and the device is not in use, pressing the structure above the inner sleeve 8 causes the spring 4 to contract downwards until the screw 5 contacts the nut 3, at which point it can no longer be pressed down. Simultaneously, rotating the inner sleeve 8 screws the screw 5 into the nut 3 for secure tightening.

[0037] Implementation Status 2:

[0038] When the door is open and this device is in use, rotating the inner sleeve 8 unscrews the screw 5 from the nut 3. The spring 4 automatically extends, causing the inner sleeve 8 and its clamping structure to extend upwards until the slide rail 10 contacts the door leaf, at which point the inner sleeve 8 and its clamping structure can no longer extend upwards. The push rods 11 on both sides of the two baffles 14 are then driven to push the clamping plate 12 and the rubber pad 13 inwards, causing the rubber pad 13 to contact the door leaf until the clamping plate 12 and the rubber pad 13 can no longer move.

[0039] Implementation Status 3:

[0040] When the door changes from open to closed, and the device changes from being in use to being inactive, the push rods 11 on both sides of the two baffles 14 are driven to push the clamping plate 12 and rubber pad 13 on the upper part of the slide rail 10 outwards, causing the rubber pad 13 and clamping plate 12 to move away from the door leaf until the rubber pad 13 and clamping plate 12 are no longer fixing the door leaf. Pressing the structure above the inner sleeve 8 causes the spring 4 to contract downwards until the screw 5 contacts the nut 3, and it can no longer be pressed down. At the same time, rotating the inner sleeve 8 screws the screw 5 into the nut 3 for fixing. After that, the door can be closed.

[0041] Implementation Status 4:

[0042] When the door changes from closed to open, and the device changes from non-use to use: Open the door to the position of the device, and align the door leaf vertically with the clamping structure. Rotate the inner sleeve 8 to unscrew the screw 5 from the nut 3. The spring 4 automatically extends, causing the inner sleeve 8 and its upper structure to extend upwards until the slide rail 10 contacts the door leaf, at which point the inner sleeve 8 and its upper structure can no longer extend upwards. Drive the push rods 11 on both sides of the two baffles 14 respectively, pushing the clamping plate 12 and the rubber pad 13 inwards, so that the rubber pad 13 contacts the door leaf, until the clamping plate 12 and the rubber pad 13 can no longer move.

[0043] It should be noted that the terms such as "upper", "lower", "left", "right", "front", and "back" used in this utility model are only for clarity of description and are not intended to limit the scope of implementation of this utility model. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered as within the scope of implementation of this utility model.

[0044] The above are merely preferred embodiments of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are within its protection scope. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should be considered within its protection scope.

Claims

1. A telescopic door stop specifically for industrial plants, characterized in that: The device includes a base (1), an outer sleeve (7), an inner sleeve (8), a nut (3), a spring (4), a screw (5), a top seat (9), and a clamping structure. The base (1) is used to install on the ground. The upper end of the base (1) is connected to the outer sleeve (7). The nut (3) is provided on the base (1) inside the outer sleeve (7). The inner sleeve (8) is slidably disposed in the outer sleeve (7). The lower end of the inner sleeve (8) is connected to the base (1) inside the outer sleeve (7) by a spring (4) for driving the inner sleeve (8) to extend out of the outer sleeve (7). The lower end of the inner sleeve (8) is also provided with a screw (5) that can be threadedly connected to the nut (3). The upper end of the inner sleeve (8) is equipped with a top seat (9). The top seat (9) is provided with a clamping structure for clamping the door leaf.

2. The telescopic door stop for industrial plants according to claim 1, characterized in that: The clamping structure includes a baffle (14), a clamping plate (12), and a push rod (11). A baffle (14) is symmetrically provided on both sides of the upper end of the top seat (9). Two clamping plates (12) are provided between the two baffles (14). The two clamping plates (12) are connected to the adjacent baffles (14) by push rods (11). The two push rods (11) are used to drive the two clamping plates (12) to move closer or further away from each other.

3. The telescopic door stop for industrial plants according to claim 2, characterized in that: The push rod (11) is an electric telescopic rod.

4. The telescopic door stop for industrial plants according to claim 2, characterized in that: The push rod (11) is an adjusting screw. The baffle (14) has a threaded hole. The adjusting screw is threaded in the threaded hole on the baffle (14), and the end of the adjusting screw passing through the threaded hole is rotatably connected to the side wall of the adjacent clamp plate (12).

5. The telescopic door stop for industrial plants according to claim 4, characterized in that: The end of the adjusting screw away from the clamp plate (12) is provided with a nut.

6. The telescopic door stop for industrial plants according to claim 2, characterized in that: A slide rail (10) is provided between the two baffles (14), and the two clamping plates (12) are slidably connected to the slide rail (10). The two push rods (11) are used to drive the clamping plates (12) to move closer to or further away from each other along the slide rail (10).

7. The telescopic door stop for industrial plants according to claim 2, characterized in that: A rubber pad (13) is provided on each of the two clamping plates (12) on opposite sides.

8. The telescopic door stop for industrial plants according to claim 1, characterized in that: The lower end of the inner sleeve (8) is rotatably provided with a rotating plate (6), and the upper end of the spring (4) is connected to the lower end of the rotating plate (6).

9. A telescopic door stop for industrial plants according to claim 1, characterized in that: The base (1) is provided with several expansion bolts (2), which pass vertically through the base (1) and are used to connect the ground.

10. A telescopic door stop for industrial plants according to claim 9, characterized in that: Several expansion bolts (2) are arranged in an array around the outer sleeve (7) on the base (1).