Novel self-locking safety sliding door

By setting an arc-shaped opening on the sliding door body and equipping it with a self-locking mechanism, and using spring pressure to achieve self-locking, the problem of proximity switch detection failure caused by roller wear in sliding doors is solved, ensuring the normal use of sliding doors and production line safety.

CN224017079UActive Publication Date: 2026-03-20JIANGYIN XINGCHENG SPECIAL STEEL WORKS CO LTD
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Patent Information

Application Number
CN202520360059.5
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-03-04
Publication Date
2026-03-20
Estimated Expiration
2035-03-04

AI Technical Summary

Technical Problem

Wear on the rollers of existing safety sliding doors causes them to tilt and become unable to remain closed, leading to proximity switch failure, frequent alarms and shutdowns, and affecting production line safety.

Method used

An arc-shaped opening is provided on the sliding door body and equipped with a self-locking mechanism. The self-locking is achieved by using spring pressure to prevent the sliding door from failing to stay closed due to roller wear. The self-locking mechanism keeps the sliding door within the detection range of the proximity switch.

Benefits of technology

This effectively prevents sliding doors from falling out of the proximity switch's detection range due to roller wear, avoiding frequent alarms and equipment shutdowns, and ensuring normal use of the sliding doors and personnel safety.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224017079U_ABST
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Abstract

The utility model discloses a novel self-locking safety sliding door, and relates to the technical field of production line safety sliding doors. The sliding door comprises an upper rail, a lower rail, a sliding door body, a self-locking mechanism and a reinforcing edge, rollers are arranged at the top and the bottom of the sliding door body, the sliding door body is slidably arranged between the upper rail and the lower rail through the rollers, an arc-shaped opening is formed in the center of the top edge of the sliding door body, the reinforcing edge is fixed to the arc-shaped opening of the top edge of the sliding door body, and the cross section of the reinforcing edge is of an inverted-U-shaped structure. The reinforcing edge is a thin plate mechanism. According to the sliding door, the arc-shaped opening is formed in the sliding door body, the self-locking mechanism is arranged at the position of the arc-shaped opening, self-locking of the sliding door body can be achieved through pressure provided by the spring, and the problem that the sliding door body cannot be kept in a closed state after sliding door rollers are abraded is solved; the safety problems of frequent alarm and equipment shutdown due to the fact that the sliding door is separated from the detection range of the proximity switch are avoided, normal use of the sliding door is guaranteed, and personnel safety and production line safety are guaranteed.
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Description

Technical Field

[0001] This utility model belongs to the technical field of safety sliding doors for production lines, and in particular relates to a novel self-locking safety sliding door. Background Technology

[0002] Currently, safety sliding doors are installed at all operating equipment in the steel rolling production line. To ensure personnel safety, safety detection is set up for closing the safety sliding doors, which are also interlocked with the operation of the equipment. When personnel open the safety sliding door, the equipment in the area stops operating.

[0003] During use, the following problems exist: With the frequent opening and closing of the safety sliding door, the rollers of the safety sliding door are severely worn, causing the safety sliding door to tilt. This causes the safety sliding door to open under the action of gravity, resulting in the safety limit block leaving the detection range of the proximity switch, triggering a safety alarm and safety interlocking, and the production line often stops suddenly as a result. Summary of the Invention

[0004] The purpose of this utility model is to provide a novel self-locking safety sliding door. By setting an arc-shaped opening on the sliding door body and setting a self-locking mechanism at the position of the arc-shaped opening, the sliding door body can be self-locked by the pressure provided by the spring. This prevents the sliding door body from failing to maintain a closed state due to wear of the sliding door rollers, avoids the safety problems of frequent alarms and equipment shutdowns caused by the sliding door falling out of the detection range of the proximity switch, ensures the normal use of the sliding door, and ensures the safety of personnel and production line.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] This utility model is a novel self-locking safety sliding door, including an upper track, a lower track, a sliding door body, a self-locking mechanism, and a reinforcing edge. The top and bottom of the sliding door body are provided with rollers, and the sliding door body is slidably disposed between the upper track and the lower track by means of the rollers.

[0007] The sliding door body has an arc-shaped opening at the center of the top edge, and the reinforcing edge is fixed at the arc-shaped opening at the top edge of the sliding door body. The cross-section of the reinforcing edge is an inverted U-shaped structure, and the reinforcing edge is a thin plate mechanism.

[0008] The self-locking mechanism includes a top plate and a wheel frame;

[0009] The top plate is fixed to the inner top surface of the upper track, and vertical edges are fixed on both sides of both ends of the top plate. A guide groove is formed between the two vertical edges at the same end of the top plate.

[0010] The wheel frame is an inverted U-shaped frame, and an I-beam wheel is rotatably connected inside the wheel frame. The two sides of the wheel frame slide up and down along two guide grooves respectively, and the I-beam wheel rolls along the upper surface of the reinforced edge.

[0011] The vertical edge part of the wheel frame is fixed with a supporting edge, a telescopic pipe is fixed between the supporting edge and the end of the top plate, a spring is sleeved outside the telescopic pipe, and the telescopic stroke of the telescopic pipe is greater than the depth of the arc-shaped opening.

[0012] Further, the rollers at the top of the sliding door body roll along the upper track, and the roller width is consistent with the inner width of the upper track.

[0013] Further, the top plate is fixed in the upper track by fasteners, and the width of the self-locking mechanism is less than the inner width of the upper track.

[0014] Further, a limiting stopper is fixed at one end of the upper track, and the limiting stopper is opposite to the position of the sliding door body.

[0015] Further, a proximity switch is fixed at one end in the upper track, and the proximity switch is opposite to the position of the sliding door body.

[0016] Further, a handle is fixed on the side of the sliding door body close to the proximity switch, and the handle is a U-shaped handle.

[0017] The utility model has the following beneficial effects:

[0018] The utility model discloses a self-locking safety sliding door, which comprises a sliding door body, an upper track and a top plate.

[0019] Of course, any product implementing the utility model does not necessarily need to achieve all the advantages mentioned above. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical scheme in the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the embodiment description, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor.

[0021] Fig. 1 It is a structural diagram of the self-locking mechanism and the reinforcing edge of the utility model;

[0022] Fig. 2 It is a structural diagram of a novel self-locking safety sliding door of the utility model;

[0023] In the drawings, the component list represented by each sign is as follows:

[0024] 1 - upper rail, 2 - lower rail, 3 - sliding door body, 4 - roller, 5 - self-locking mechanism, 6 - reinforcing edge, 7 - limiting block, 8 - proximity switch, 9 - handle, 301 - arc-shaped opening, 501 - top plate, 502 - wheel carrier, 503 - vertical edge, 504 - spool, 505 - support edge, 506 - telescopic tube, 507 - spring. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0026] Please refer to Figs. 1-2 The utility model discloses a novel self-locking safety sliding door, including upper rail 1, lower rail 2, sliding door body 3, self-locking mechanism 5 and reinforcing edge 6, and the top and bottom of sliding door body 3 are equipped with roller 4, and sliding door body 3 is slidably arranged between upper rail 1 and lower rail 2 through roller 4;

[0027] The center of the top edge of sliding door body 3 is equipped with arc-shaped opening 301, and reinforcing edge 6 is fixed at arc-shaped opening 301 of the top edge of sliding door body 3, the cross section of reinforcing edge 6 is inverted U-shaped structure, reinforcing edge 6 is thin plate mechanism, the setting of reinforcing edge 6 can protect arc-shaped opening 301, and has the replacement effect, and the problem that sliding door body 3 appears excessive wear is avoided;

[0028] Self-locking mechanism 5 includes top plate 501 and wheel carrier 502;

[0029] Top plate 501 is fixed in the top surface in upper rail 1, and the two sides of the both ends of top plate 501 are fixed with vertical edge 503, and guide groove is formed between the two vertical edges 503 of the same end of top plate 501;

[0030] Wheel carrier 502 is inverted U-shaped frame body, and spool 504 is rotatably connected in wheel carrier 502, and wheel carrier 502 slides up and down along two guide grooves respectively, and spool 504 rolls along the upper surface of reinforcing edge 6;

[0031] The outer side of the vertical edge 503 of the wheel carrier 502 is fixed with the support edge 505, the support edge 505 and the end of the top plate 501 are fixed with the telescopic tube 506, the telescopic tube 506 is sleeved with the spring 507 outside, and the telescopic stroke of the telescopic tube 506 is greater than the depth of the arc-shaped opening 301.

[0032] Among them, the roller 4 of the top of the sliding door body 3 rolls along the upper rail 1, and the width of the roller 4 is consistent with the width in the upper rail 1.

[0033] The top plate 501 is fixed in the upper rail 1 by fasteners, and the width of the self-locking mechanism 5 is less than the width in the upper rail 1.

[0034] As shown in the figure, one end of the upper rail 1 is fixed with a limit stop 7, and the limit stop 7 is opposite to the position of the sliding door body 3. Fig. 2

[0035] As shown in the figure, one end of the upper rail 1 is fixed with a limit stop 7, and the limit stop 7 is opposite to the position of the sliding door body 3. Fig. 2

[0036] As shown in the figure, one end of the upper rail 1 is fixed with a limit stop 7, and the limit stop 7 is opposite to the position of the sliding door body 3. Fig. 2

[0037] In the description of the present specification, the description of the terms "one embodiment", "example", "specific example" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are contained in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to 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.

[0038] The preferred embodiments of the present application disclosed above are only used to help explain the present application. The preferred embodiments do not describe all the details, nor limit the present application to the specific embodiments described. Obviously, according to the content of the present specification, many modifications and changes can be made. The present specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present application, so that those skilled in the art can well understand and utilize the present application. The present application is limited by the claims and their entire scope and equivalents.​​​

Claims

1. A novel self-locking safety sliding door, comprising an upper track (1), a lower track (2), and a sliding door body (3), wherein rollers (4) are provided at the top and bottom of the sliding door body (3), and the sliding door body (3) is slidably disposed between the upper track (1) and the lower track (2) via the rollers (4), characterized in that: It also includes a self-locking mechanism (5) and a reinforced edge (6); The sliding door body (3) has an arc-shaped opening (301) at the center of the top edge. The reinforcing edge (6) is fixed at the arc-shaped opening (301) at the top edge of the sliding door body (3). The cross-section of the reinforcing edge (6) is an inverted U-shaped structure. The reinforcing edge (6) is a thin plate mechanism. The self-locking mechanism (5) includes a top plate (501) and a wheel frame (502); The top plate (501) is fixed on the inner top surface of the upper track (1). Both sides of the top plate (501) are fixed with vertical edges (503). A guide groove is formed between the two vertical edges (503) at the same end of the top plate (501). The wheel frame (502) is an inverted U-shaped frame. The wheel frame (502) is rotatably connected to the I-beam wheel (504). The two sides of the wheel frame (502) slide up and down along two guide grooves respectively. The I-beam wheel (504) rolls along the upper surface of the reinforced edge (6). A support (505) is fixed to the outside of the vertical side (503) of the wheel frame (502). A telescopic tube (506) is fixed between the support (505) and the end of the top plate (501). A spring (507) is sleeved on the outside of the telescopic tube (506). The telescopic stroke of the telescopic tube (506) is greater than the depth of the arc-shaped opening (301).

2. The novel self-locking safety sliding door according to claim 1, characterized in that, The roller (4) at the top of the sliding door body (3) rolls along the upper track (1), and the width of the roller (4) is the same as the width inside the upper track (1).

3. A novel self-locking safety sliding door according to claim 1, characterized in that, The top plate (501) is fixed in the upper track (1) by fasteners, and the width of the self-locking mechanism (5) is smaller than the width inside the upper track (1).

4. A novel self-locking safety sliding door according to claim 1, characterized in that, One end of the upper track (1) is fixed with a limit block (7), and the limit block (7) is positioned opposite to the sliding door body (3).

5. A novel self-locking safety sliding door according to claim 1, characterized in that, A proximity switch (8) is fixed at one end of the upper track (1), and the proximity switch (8) is positioned opposite to the sliding door body (3).

6. A novel self-locking safety sliding door according to claim 5, characterized in that, The sliding door body (3) has a handle (9) fixed on the side near the proximity switch (8), and the handle (9) is a U-shaped handle.