Unpowered railing door capable of being automatically closed

Abstract

The invention relates to the technical field of industrial building safety protection, in particular to an unpowered railing door capable of being automatically closed, which comprises a movable railing and a fixed column, one side of the movable handrail is rotatably connected with the fixed column; a rotating sleeve and a rotating ring are arranged on the side, close to the fixed column, of the movable handrail, and the rotating sleeve and the rotating ring are arranged on the fixed column in a sleeving mode; the bottom end surface of the rotating sleeve is inclined; a supporting sleeve matched with the end face of the rotating sleeve in gradient is arranged at the bottom of the fixing column, the inclined end face of the supporting sleeve and the inclined end face of the rotating sleeve are oppositely arranged, and the supporting sleeve makes contact with at least one part of the rotating sleeve. Connecting buckle assemblies used for being connected with a fixed handrail are fixed to the two ends of the fixed column. On the premise of not depending on external power, it is guaranteed that the fixed handrail automatically resets after being opened.

Description

Technical Field

[0001] This application relates to the field of industrial building safety protection technology, and in particular to a non-powered gate that can close automatically. Background Technology

[0002] In the field of industrial construction, safety protection of areas near edges and openings, such as aerial work platforms, hoisting passages, and pedestrian walkways, is of paramount importance to ensuring the safety of personnel and equipment. The fixed guardrails in these locations not only need to meet rigid protection requirements, but are also frequently temporarily opened in actual production processes due to operational needs such as equipment hoisting, material transportation, and personnel passage. However, if the opened guardrails are not promptly reset and closed, they will create a continuously open and dangerous edge, posing a significant risk of fall to personnel on site.

[0003] In existing technologies, the opening and closing of fixed railings mostly rely on manual operation, which is highly dependent on the operator's conscientiousness and safety awareness. However, in busy and high-intensity work environments, operators are very likely to fail to restore the fixed railings to the closed state in time due to focusing on other tasks or simply forgetting, leaving the fixed railings in an open state, which is extremely dangerous.

[0004] Many automated solutions use electrically or pneumatically driven fixed railings. When in use, they often require an external power supply and wiring. When the construction environment is complex and the power supply is constant, their applicability is greatly reduced. In addition, electrically or pneumatically driven fixed railings are not only structurally complex, but also have a certain risk of circuit failure and are relatively unreliable. They may even introduce the safety hazard of electric shock.

[0005] Therefore, how to ensure that the fixed railing automatically resets after being opened without relying on external power has become an urgent problem to be solved in this field. Summary of the Invention

[0006] In order to ensure that the fixed railing automatically resets after being opened without relying on external power, this application provides a non-powered railing gate that can close automatically.

[0007] The automatic closing non-powered gate provided in this application adopts the following technical solution: An automatically closing, non-powered gate includes a movable railing and a fixed post. One side of the movable railing is rotatably connected to the fixed post. A rotating sleeve and a rotating ring are provided on the side of the movable railing near the fixed post, both of which are fitted onto the fixed post. The bottom end face of the rotating sleeve is inclined. A support sleeve matching the inclination of the rotating sleeve end face is provided at the bottom of the fixed post, with the inclined end face of the support sleeve facing the inclined end face of the rotating sleeve, and at least a portion of the support sleeve contacting the rotating sleeve. Connecting buckle assemblies for connecting to the fixed railing are fixed at both ends of the fixed post.

[0008] By adopting the above technical solution, the movable railing is rotatably connected to the fixed post, and a connecting buckle assembly is installed on the fixed post to connect the railing gate to the fixed railing. A rotating sleeve is installed on the movable railing, and a support sleeve is installed on the fixed post. Matching inclined surfaces are provided on the opposite end faces of the support sleeve and the rotating sleeve. When the rotating sleeve rotates to an angle that does not match the end face of the support sleeve, the rotating sleeve and the support sleeve are in an unbalanced state. Under the action of its own gravity, the rotating sleeve rotates to an angle that matches the inclination of the end face of the support sleeve, thereby realizing the automatic reset of the movable railing without external power after it is pushed open.

[0009] Preferably, the support sleeve has a groove at one end facing the rotating sleeve, and a plurality of balls are rotatably disposed in the groove. The diameter of the balls matches the wall thickness of the support sleeve. At least a portion of the balls protrudes from the groove and contacts the lower end face of the rotating sleeve.

[0010] By adopting the above technical solution, the grooves and balls set on the support sleeve can convert at least part of the friction between the support sleeve and the rotating sleeve from sliding friction to rolling friction, thereby reducing the wear between the rotating sleeve and the support sleeve, increasing the service life of the rotating sleeve and the support sleeve to a certain extent, and increasing the smoothness during rotation.

[0011] Preferably, a limiting frame is fitted onto one end of the support sleeve facing the rotating sleeve, and at least a portion of the limiting frame contacts the ball bearing, the limiting frame being used to limit the ball bearing.

[0012] By adopting the above technical solution, a limiting frame is fitted on the end of the support sleeve facing the rotating sleeve. The limiting frame restricts the ball in the groove, restricts the movement of the ball, and ensures that the ball can only roll in the groove under the action of the support sleeve and the rotating sleeve. This prevents the ball from being displaced due to uneven force, moving out of the groove, and causing poor connection.

[0013] Preferably, the limiting frame includes an inner bushing and an outer bushing; the inner bushing is connected to the inner surface of the support sleeve, and the outer bushing is connected to the inner surface of the support sleeve; an annular plate is provided between the inner bushing and the outer bushing, and the annular plate has an opening for protruding and exposing the ball bearing.

[0014] By adopting the above technical solution, the inner and outer bushings are connected to the support sleeve from the inner and outer sides respectively, and the balls are restricted in height and radial direction to prevent unnecessary displacement of the balls. The ring plate connects the inner and outer bushings, which not only further increases the connection and fixation of the inner and outer bushings, but also forms a fixed space between the ring plate and the groove, thereby restricting the displacement of the balls. At the same time, an opening is provided on the ring plate so that the balls can contact the rotating sleeve from the opening.

[0015] Preferably, the connecting buckle assembly includes a first connecting buckle and a second connecting buckle; the first connecting buckle is disposed at the bottom of the fixed post, and the second connecting buckle is disposed between the rotating sleeve and the rotating ring, and both the first connecting buckle and the second connecting buckle are connected to the fixed post and the fixed railing.

[0016] By adopting the above technical solution, the fixed post is connected to the fixed railing using the first and second connecting buckles, thereby connecting the movable railing to the fixed railing. The second connecting buckle is set between the rotating sleeve and the rotating ring, and there is a gap between the second and the rotating ring, so as not to affect the rotation of the rotating ring. This prevents the rotating ring from being supported by the second connecting buckle when the movable railing is not fully closed, which would cause the entire movable railing to be supported and unable to complete the reset.

[0017] Preferably, a limiting block is provided at the end of the fixed column away from the support sleeve. The outer diameter of the limiting block is larger than the inner diameter of the rotating ring, and the distance between the limiting block and the rotating ring is greater than the distance between the projections of the highest and lowest points of the inclined surface of the rotating sleeve onto the axis.

[0018] By adopting the above technical solution, the distance between the limiting block and the rotating ring is greater than the distance between the projections of the highest and lowest points of the inclined surface of the rotating sleeve on the axis. This ensures that the rotating ring does not contact the limiting block when the movable railing is rotated and raised, preventing the movable railing from being restricted before it is fully opened, which would result in the railing gate not opening completely and operators being unable to enter or exit. Furthermore, the inner diameter of the rotating ring matches the outer diameter of the fixed column, and the rotating ring is sleeved on the fixed column, ensuring the smoothness of the rotating ring during rotation.

[0019] Preferably, the first connecting buckle is provided with a first through hole and a first socket; the inner diameter of the first through hole matches the outer diameter of the fixed post, and the first through hole is used to pass through the fixed post; the first socket is used to engage the wing plate of the fixed railing.

[0020] By adopting the above technical solution, the first through hole is used to pass through the fixed post, the first socket is used to snap the fixed railing, and the fixed post and the fixed railing are connected by the first connecting buckle, which restricts the position of the fixed post to a certain extent.

[0021] Preferably, the second connecting buckle is provided with a second through hole and a second socket; the inner diameter of the second through hole matches the outer diameter of the fixing post, and the second through hole is used to pass through the fixing post; the second socket is used to engage the wing plate of the fixing railing.

[0022] By adopting the above technical solution, the second through hole is used to pass through the fixed post, the second socket is used to snap the fixed railing, the fixed post is connected to the fixed railing by the second connecting buckle, and the position of the fixed post is further defined. The first connecting buckle and the second connecting buckle together restrict the fixed post to prevent the fixed post from shifting or tilting during use.

[0023] Preferably, there is a railing opening between the two fixed railings, and the movable railing is used to cover or expose the railing opening; the length of the movable railing is greater than the length of the railing opening.

[0024] By adopting the above technical solution, the movable railing can cover or reveal the railing opening when rotated to different angles, and the length of the movable railing is greater than the length of the railing opening, so that there will be no gap when the railing opening is covered, thus ensuring the safety of the operators.

[0025] Preferably, the rotating sleeve and the supporting sleeve are formed from the same pipe by oblique cutting, and the oblique cutting angle is 30 degrees to 60 degrees.

[0026] By adopting the above technical solution, a rotating sleeve and a supporting sleeve are made by obliquely cutting a pipe fitting. This ensures the matching degree of the inclined surfaces between the rotating sleeve and the supporting sleeve to a certain extent. When the end face of the rotating sleeve matches the end face of the supporting sleeve, the rotating sleeve and the supporting sleeve do not make single-point contact, but rather the entire surface contact. This reduces the force on the lowest point of the rotating sleeve, thereby reducing the wear of the rotating sleeve and extending the service life of the movable railing.

[0027] In summary, this application includes at least one of the following beneficial technical effects: 1. No external power source is required. By using a rotating sleeve and a support sleeve with their opposite end faces inclined, when the rotating sleeve rotates to an angle that does not match the end face of the support sleeve, the rotating sleeve and the support sleeve are in an unbalanced state. Under the action of its own gravity, the rotating sleeve rotates to an angle that matches the inclination of the end face of the support sleeve, thereby realizing the automatic reset of the movable railing without external power after it is pushed open. 2. The main repositioning structure can be completed by using the same pipe fitting with an angled cut without relying on external structures. The structure is simple and clear, and the cost is low. At the same time, it will not occupy other space, ensuring practicality and applicability. 3. It can be reset by rotating to any angle. In actual installation, the maximum rotation angle can reach 180 degrees, which can fully expose the railing opening and does not affect normal personnel passage; 4. The installation position is optional. It can automatically reset no matter which side of the fixed railing it is fixed on. The connector buckle assembly with the opening can be plugged into the fixed railings on both sides, which further improves the applicability of the railing gate. 5. Adding ball bearings and a limiting frame, using ball bearings to convert at least part of the sliding friction between the support sleeve and the rotating sleeve into rolling friction, reduces damage to the support sleeve and the rotating sleeve, increases the service life of the support sleeve and the rotating sleeve to a certain extent, and makes the rotation of the movable railing smoother. Attached Figure Description

[0028] Figure 1 This is a perspective view of a non-powered gate that can close automatically, according to this application. Figure 2 This is an exploded view of an automatically closing, non-powered gate according to this application; Figure 3 This is a perspective view of an automatically closing, non-powered gate installed on a fixed railing, as per this application. Figure 4 This is a perspective view of a non-powered gate that can automatically close, as described in this application, when installed on a fixed railing and opened to 90 degrees. Figure 5 This is a perspective view of a non-powered gate that can automatically close, as described in this application, when installed on a fixed railing and opened 180 degrees. Figure 6 This is a partially enlarged view of the first connecting buckle in a non-powered gate that can close automatically according to this application; Figure 7 This is a top view of a non-powered gate that can close automatically according to this application; Figure 8 yes Figure 7 Sectional view along the middle AA; Figure 9 This is a sectional view of the railing gate of Embodiment 2 of this application; Figure 10 yes Figure 9 A magnified view of part B in the middle section.

[0029] Explanation of reference numerals in the attached figures: 1. Movable railings; 2. Fixed column; 3. Rotating sleeve; 4. Rotating ring; 5. Support sleeve; 6. Connecting buckle assembly; 61. First connecting buckle; 62. Second connecting buckle; 611. First rounded corner; 621. Second rounded corner; 6101. First through hole; 6102. First socket; 6201. Second through hole; 6202. Second socket; 7. Limit block; 8. Fixed railing; 801. Railing opening; 9. Limiting frame; 91. Inner bushing; 92. Outer bushing; 93. Ring plate. Detailed Implementation

[0030] The following is in conjunction with the appendix Figure 1-10 This application will be described in further detail. Example

[0031] This application discloses an automatic closing, non-powered gate.

[0032] Reference Figure 1 An automatically closing, non-powered gate includes a movable railing 1, a fixed post 2, a rotating sleeve 3, a rotating ring 4, a support sleeve 5, a connecting buckle assembly 6, and a limiting block 7. The outer wall of the rotating ring 4 is fixed to the movable railing 1, and the outer surface of the rotating sleeve 3 is fixed to the movable railing 1. The rotating sleeve 3 and the rotating ring 4 are sleeved on the fixed post 2, and the movable railing 1 can rotate around the fixed post 2 under the action of the rotating sleeve 3 and the rotating ring 4. The bottom of the fixed post 2 is provided with a support sleeve 5, which is in contact with at least a portion of the rotating sleeve 3, and the inclined end face of the support sleeve 5 is opposite to the inclined end face of the rotating sleeve 3. The connecting buckle assembly 6 is sleeved on the fixed post 2, and the end of the fixed post 2 away from the support sleeve 5 is provided with a limiting block 7.

[0033] Reference Figure 2 The connecting buckle assembly 6 includes a first connecting buckle 61 and a second connecting buckle 62. The first connecting buckle 61 is disposed at one end of the fixed post 2 near the support sleeve 5, and the second connecting buckle 62 is disposed between the rotating ring 4 and the rotating sleeve 3.

[0034] In this embodiment, the support sleeve 5 is connected to the second connecting buckle 62, the support sleeve 5 and the second connecting buckle 62 are relatively fixed, the support sleeve 5 and the rotating sleeve 3 generate relative movement, and the fixed post 2 and the first connecting buckle 61 are relatively fixed.

[0035] Reference Figure 2The first connecting buckle 61 is provided with a first through hole 6101, a first insertion port 6102 and a first rounded corner 611. The axis of the first through hole 6101 is parallel to the axis of the support sleeve 5, and the insertion direction of the first insertion port 6102 is perpendicular to the axis of the first through hole 6101.

[0036] Reference Figure 3 The railing gate is installed at a position where there is a railing opening 801 between two adjacent fixed railings 8. The railing gate is used to cover or expose the railing opening 801. The fixed post 2 is connected to the fixed railing 8 using the first connecting buckle 61 and the second connecting buckle 62. When the movable railing 1 covers the railing opening 801, the side of the movable railing 1 away from the fixed railing contacts the fixed railing 8, or the movable railing 1 is parallel to the line connecting the two ends of the railing opening 801. In this embodiment, the side of the movable railing 1 away from the fixed railing contacts the fixed railing 8.

[0037] Reference Figure 4 When the movable railing 1 is opened to 90 degrees, the railing opening 801 is fully exposed. The contact surface between the rotating sleeve 3 and the supporting sleeve 5 is very small. Due to the gravity of the movable railing 1 and the rotating sleeve 3 themselves, the bottom of the rotating sleeve 3 tends to be in contact with the supporting sleeve 5. When there is no external force input, the rotating sleeve 3 drives the movable railing 1 to rotate and move downwards, so that the rotating sleeve 3 returns to its original position.

[0038] Reference Figure 5 When the rotating sleeve 3 rotates 180 degrees from its initial position, the lowest point of the rotating sleeve 3 contacts the highest point of the support sleeve 5. At this time, the rotating sleeve 3 is also in an unstable state. When there is no external force input, it will rotate back to the initial position, and the bottom inclined end face of the rotating sleeve 3 will contact the top inclined end face of the support sleeve 5, so that the rotating sleeve 3 returns to a more stable state.

[0039] It should be noted that in actual use, the rotating sleeve 3 rotates less than 180 degrees from its initial position. Therefore, the rotating sleeve 3 must rotate back in the opposite direction from its initial position, i.e., refer to... Figure 4 When the rotating sleeve 3 and the movable railing 1 are rotated 90 degrees counterclockwise under the action of external force, without external interference, the rotating sleeve 3 and the movable railing 1 will inevitably return to their initial positions by rotating 90 degrees clockwise along the original path.

[0040] In other embodiments of this application, when the movable railing 1 needs to rotate to 180 degrees, in order to prevent the rotating sleeve 3 from rotating more than 180 degrees due to inertia and getting stuck by the fixed railing 8, thus failing to reset properly, a reset block is provided on the fixed railing 8 connected to the connecting buckle assembly 6. When the rotating sleeve 3 rotates to 180 degrees, the movable railing 1 contacts the reset block to prevent the rotating sleeve 3 from rotating excessively.

[0041] Reference Figure 6 The second connecting buckle 62 is provided with a second through hole 6201, a second socket 6202 and a second rounded corner 621, the second rounded corner 621 extending from inside the second socket 6202 to outside the second socket 6202.

[0042] In this embodiment, refer to Figure 2 Both the first socket 6102 and the second socket 6202 extend from right to left, as shown in the reference. Figure 3 The fixed railing 8 is made of C-shaped steel. The wing plates of the steel in the fixed railing 8 on both sides of the railing opening 801 are arranged opposite each other. Therefore, in order to fit the fixed railing 8, the first insertion port 6102 and the second insertion port 6202 are set to extend from right to left. In other embodiments of this application, when the fixed railings 8 on both sides are set opposite to each other, the direction of the first connecting buckle 61 and the second connecting buckle 62 needs to be changed so that the first insertion port 6102 and the second insertion port 6202 are connected to the fixed railing 8 from the other side. When the setting direction of the fixed railing 8 is changed, there is no need to remake or purchase the connecting buckle assembly 6. The original connecting buckle assembly 6 can be used by flipping it 180 degrees, which not only saves costs but also has high applicability.

[0043] Reference Figure 7 In this embodiment, the movable railing 1 and the second connecting buckle 62 are perpendicular to each other, and the movable railing 1 is fixedly connected to the outer surface of the rotating ring 4.

[0044] Reference Figure 8 In this embodiment, the movable railing 1 is made of hollow tubing, which reduces the overall weight of the movable railing 1 and reduces the wear rate of the rotating sleeve 3 to a certain extent.

[0045] In this embodiment, the movable railing 1 is composed of several horizontal bars, several vertical bars, and several diagonal bars. The gaps between the movable railing 1 should meet safety standards to prevent excessive gaps from posing safety hazards.

[0046] In this embodiment, after the railing gate is installed, the second connecting buckle 62 and the fixed post 2 are relatively stationary, and the fixed post 2 does not rotate with the rotating sleeve 3; the support sleeve 5 is also relatively stationary with the connecting buckle and the fixed post 2 after installation; when there is a certain angle between the extension lines of the two sets of fixed railings 8 forming the railing opening 801, in order to ensure the normal use of the railing gate, it is necessary to adjust the orientation of the inclined surfaces of the support sleeve 5 and the rotating sleeve 3, as well as the angle of the insertion in the connecting buckle assembly 6, so that when the movable railing 1 is in a stable state, the movable railing 1 can block the railing opening 801.

[0047] In this embodiment, only two connecting buckles are used to restrict the fixing post 2. When the length of the fixing post 2 is long, the number of connecting buckles needs to be adjusted according to the height.

[0048] The implementation principle of Example 1 is as follows: First, the length and height of the railing opening 801 that needs to be covered need to be measured to determine the length of the movable railing 1 and the height of the fixed post 2. Then, based on the measured length, a suitable movable railing 1 and fixed post 2 are selected, and a pipe with an inner diameter matching the outer diameter of the fixed post 2 is selected. The pipe is cut along its generatrix and at a 45-degree angle to the axis to form a rotating sleeve 3 and a support sleeve 5. The rotating sleeve 3 is fixed to the movable railing 1, and a rotating ring 4 is fixed on the movable railing 1. The rotating ring 4, the second connecting buckle 62, the rotating sleeve 3, the support sleeve 5, and the first connecting buckle 61 are sequentially inserted into one end of the fixed post 2 without a stop block 7. The angles of the rotating sleeve 3, the support sleeve 5, the first connecting buckle 61, and the second connecting buckle 62 are adjusted according to actual needs. The support sleeve 5 is fixed to the first connecting buckle 61, the first connecting buckle 61 is fixed to the fixed post 2, and the first connecting buckle 61 and the second connecting buckle 62 are fixed to the fixed railing 8. After installation, the movable railing 1 is tested to check the reset status. Example

[0049] Reference Figure 9 A limiting frame 9 is provided between the rotating sleeve 3 and the supporting sleeve 5.

[0050] Reference Figure 10The support sleeve 5 has a groove 501, and a ball bearing 51 is disposed in the groove 501; the limiting frame 9 includes an inner bushing 91, an outer bushing 92, and an annular plate 93. The inner bushing 91 is connected to the inner sidewall of the support sleeve 5, the outer bushing 92 is in contact with the outer sidewall of the support sleeve 5, the outer sidewall of the annular plate 93 is connected to the inner sidewall of the outer bushing 92, and the inner sidewall of the annular plate 93 is connected to the outer sidewall of the inner bushing 91. The annular plate 93 is designed to be inclined, and the annular plate 93 is designed to be inclined. The plate 93 has an opening for protruding the ball 51. A portion of the ball 51 passes through the opening and contacts the rotating sleeve 3. The diameter of the opening is smaller than the diameter of the ball 51. In actual use, the height of the protrusion of the ball 51 is about one-third of its diameter. A bearing-like structure with an inclined end face is formed between the ball 51 and the ring plate 93. The inner bushing 91 and the outer bushing 92 restrict the displacement of this bearing-like structure in the wall thickness direction of the support sleeve 5.

[0051] In this embodiment, the diameter of the ball 51 is slightly smaller than the wall thickness of the support sleeve 5.

[0052] The difference between this embodiment and embodiment 1 is that this embodiment adds a limiting frame 9, a ball bearing 51, and a roller groove 501, so that most of the friction between the rotating sleeve 3 and the supporting sleeve 5 is converted into rolling friction, which slows down the wear rate of the rotating sleeve 3 and the supporting sleeve 5, and can increase the smoothness of the opening of the movable railing 1, thereby increasing the service life of the rotating sleeve 3 and the supporting sleeve 5 to a certain extent.

[0053] In this embodiment, the lengths of the inner bushing 91 and the outer bushing 92 are sufficient. No matter how many degrees the rotating sleeve 3 rotates, the end of the rotating sleeve 3 facing the support sleeve 5 is always within the restricted space formed by the inner bushing 91, the outer bushing 92, and the ring plate 93. The length of the rotating sleeve 3 should be suitable for connecting the movable railing 1 and also suitable for connecting with the limiting frame 9. The attached drawings only show the connection structure between the limiting frame 9 and the rotating sleeve 3 and the support sleeve 5. They are not intended to limit the lengths of the limiting frame 9, the rotating sleeve 3, and the support sleeve 5. Selecting a suitable length for the limiting frame 9 and the rotating sleeve 3 is a skill possessed by those skilled in the art.

[0054] In other embodiments of this application, the groove 501 can be directly engraved with a single arc-shaped groove according to the diameter of the ball 51, so that the ball 51 can be directly placed in the groove; the ball 51 can be replaced with a roller, that is, a frustum with different diameters at both ends, and the smaller diameter end faces the inner bushing 91.

[0055] The implementation principle of Example 2 is as follows: At the end of the support sleeve 5 facing the rotating sleeve 3, a suitable groove 501 is engraved according to the diameter and number of the balls 51, and a certain number of balls 501 are placed into the groove 501. Then, the limiting frame 9 with an opening is connected to the support sleeve 5, so that the balls 501 protrude from the opening. The rotating sleeve 3 is fixed to the movable railing 1, and the rotating ring 4 is fixed on the movable railing 1. The rotating ring 4, the second connecting buckle 62, the rotating sleeve 3, the support sleeve 5 and the first connecting buckle 61 are sequentially inserted into one end of the fixed post 2 without the limit block 7. The rotating sleeve 3 is installed into the space limited by the inner bushing 91 and the outer bushing 92. The angles of the rotating sleeve 3, the support sleeve 5, the first connecting buckle 61 and the second connecting buckle 62 are adjusted according to actual needs. The support sleeve 5 is fixed to the first connecting buckle 61, the first connecting buckle 61 is fixed to the fixed post 2, and the first connecting buckle 61 and the second connecting buckle 62 are fixed to the fixed railing 8. After installation, the movable railing 1 is tested to check the reset status.

[0056] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A self-closing, unpowered balustrade door characterised in that: It comprises a movable rail (1) and a fixed column (2); One side of the movable rail (1) is rotatably connected with the fixed column (2); The side of the movable rail (1) close to the fixed column (2) is provided with a rotating sleeve (3) and a rotating ring (4), both of which are sleeved on the fixed column (2); the bottom end surface of the rotating sleeve (3) is obliquely arranged; The bottom of the fixed column (2) is provided with a support sleeve (5) matching the oblique degree of the end surface of the rotating sleeve (3), the oblique end surface of the support sleeve (5) is oppositely arranged with the oblique end surface of the rotating sleeve (3), and at least a part of the support sleeve (5) is in contact with the rotating sleeve (3); The two ends of the fixed column (2) are fixedly provided with a connecting buckle assembly (6) for connecting with a fixed rail (8).

2. A self-closing, unpowered balustrade door according to claim 1, characterised in that: One end of the support sleeve (5) towards the rotating sleeve (3) is provided with a rolling groove (501), a plurality of rolling balls (51) are rotatably arranged in the rolling groove (501), the diameter of the rolling ball (51) matches the wall thickness of the support sleeve (5); at least a part of the rolling ball (51) protrudes from the rolling groove (501) and is in contact with the lower end surface of the rotating sleeve (3).

3. A self-closing, unpowered balustrade door according to claim 2, characterised in that: One end of the support sleeve (5) towards the rotating sleeve (3) is sleeved with a limiting frame (9), at least a part of the limiting frame (9) is in contact with the rolling ball (51), and the limiting frame (9) is used for limiting the rolling ball (51).

4. A self-closing, unpowered balustrade door according to claim 3, wherein: The limiting frame (9) comprises an inner shaft sleeve (91) and an outer shaft sleeve (92); The inner shaft sleeve (91) is connected with the inner surface of the support sleeve (5), and the outer shaft sleeve (92) is connected with the inner surface of the support sleeve (5); The ring plate (93) is arranged between the inner shaft sleeve (91) and the outer shaft sleeve (92), and the ring plate (93) is provided with an opening for protruding and exposing the rolling ball (51).

5. A self-closing, non-powered barrier gate according to claim 1, wherein: The connecting buckle assembly (6) comprises a first connecting buckle (61) and a second connecting buckle (62); The first connecting buckle (61) is arranged at the bottom of the fixed column (2), and the second connecting buckle (62) is arranged between the rotating sleeve (3) and the rotating ring (4); both the first connecting buckle (61) and the second connecting buckle (62) are connected with the fixed column (2) and the fixed rail (8).

6. A self-closing, non-powered barrier gate according to claim 1, wherein: One end of the fixed column (2) away from the support sleeve (5) is provided with a limiting block (7), the outer diameter of the limiting block (7) is greater than the inner diameter of the rotating ring (4), and the distance between the limiting block (7) and the rotating ring (4) is greater than the distance between the highest point and the lowest point of the inclined surface of the rotating sleeve (3) on the axis.

7. A self-closing, unpowered barrier gate according to claim 3, wherein: The first connecting buckle (61) is provided with a first through hole (6101) and a first socket (6102); The inner diameter of the first through hole (6101) matches the outer diameter of the fixed column (2), and the first through hole (6101) is used for penetrating the fixed column (2); The first socket (6102) is used for clamping the wing plate of the fixed rail (8).

8. A self-closing, unpowered barrier gate according to claim 3, wherein: The second connecting buckle (62) is provided with a second through hole (6201) and a second socket (6202); The inner diameter of the second through hole (6201) matches the outer diameter of the fixed column (2), and the second through hole (6201) is used for penetrating the fixed column (2); The second socket (6202) is used for clamping the wing plate of the fixed railing (8).

9. An unpowered self-closing balustrade door according to claim 1, characterised in that: There is a railing gap (801) between two fixed railings (8), and the movable railing (1) is used for shielding or exposing the railing gap (801); the length of the movable railing (1) is greater than the length of the railing gap (801).

10. An unpowered self-closing balustrade door according to claim 1, characterised in that: The rotating sleeve (3) and the supporting sleeve (5) are formed by oblique cutting of the same pipe, and the angle of oblique cutting is 30-60 degrees.

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