Self-locking type lifting guardrail

Abstract

The utility model discloses a self-locking type lifting guardrail which comprises a fixed guardrail body and a movable guardrail body arranged on the fixed guardrail body, an air spring is arranged between the fixed guardrail body and the movable guardrail body, and the self-locking type lifting guardrail is further provided with a locking assembly used for controlling the fixed guardrail body and the movable guardrail body to be in a locking state when the fixed guardrail body and the movable guardrail body are completely overlapped. The locking assembly comprises a first locking piece arranged at the bottom of the fixed guardrail and a second locking piece arranged on the movable guardrail. The air spring is matched with the locking assembly to replace an electric control mode to achieve the height adjusting function, electric wires needed by electric control and arranged complexly are not needed, interference caused by external environment factors such as line aging and short circuit is avoided, the self-locking structure is simple, and practicability is higher.

Description

Technical Field

[0001] The utility model relates to the field of guardrails, in particular to a self-locking lifting guardrail. Background Art

[0002] Guardrail, also known as guardrail, is a facility used to separate, guide and ensure safety. It is widely used in bridges, buildings, courtyards, roads and other places.

[0003] Traditional guardrails are only single-layer, including support columns on both sides and baffles located between the support columns. Therefore, traditional guardrails cannot be adjusted in height. Existing double-layer guardrails installed indoors can be equipped with electric control mechanisms to achieve the function of guardrail height adjustment. However, when used on outdoor guardrails, due to multiple factors such as harsh outdoor environment and complex wiring layout, it is inconvenient to arrange electric control guardrails outdoors. Summary of the Invention

[0004] Based on this, the present application provides a self-locking lifting guardrail to solve the above technical problems.

[0005] The technical solution adopted by the utility model to solve its technical problems is: a self-locking lifting guardrail, including a fixed guardrail and a movable guardrail arranged on the fixed guardrail, a gas spring is arranged between the fixed guardrail and the movable guardrail, and a locking component is also provided for controlling the fixed guardrail and the movable guardrail to form a locked state when they are completely overlapped; the locking component includes a first locking piece arranged on the movable guardrail and a second locking piece arranged at the bottom of the fixed guardrail.

[0006] In the above technical solution, further, the fixed guardrail includes support columns on both sides and a guardrail plate located between the support columns, a slide groove is provided in the support column, and a bottom plate is provided at the bottom of the support column; the movable guardrail includes sliding columns on both sides and the guardrail plate located between the sliding columns, and the sliding columns are placed in the slide groove.

[0007] In the above technical solution, further, a first area, a second area, and a third area are provided in the sliding column; the first area is in a closed state on all sides, and the gas spring is arranged in the first area; the second area is in a closed state on all sides, and the locking assembly is arranged in the second area; the third area is in a single-sided open state, and the side edge of the guardrail plate is clamped in the third area.

[0008] In the above technical solution, further, the gas spring includes a cylinder outer sleeve fixedly arranged in the first area, and a cylinder inner rod with an end fixed on the base plate; the first locking member is arranged at the bottom end of the second area, and the second locking member is fixedly arranged on the base plate.

[0009] In the above technical solution, further, the first locking member includes a fixed block for fixing the first locking member to the second area; a self-locking pin provided on the fixed block and facing directly downward; a self-locking rotating wheel is provided at the lower end of the self-locking pin, and a guide block is evenly provided in an annular shape on the circumferential wall of the self-locking rotating wheel, the guide block is triangular and the guide tip is circumferentially guided; an annular groove is provided on the self-locking pin and below the self-locking rotating wheel, and an annular retaining ring is provided in the annular groove; a spring is provided between the self-locking rotating wheel and the fixed block.

[0010] In the above technical solution, further, the second locking member includes a self-locking fixing sleeve fixed on the base plate, a plurality of groups of clamping blocks are evenly arranged in a ring on the upper end of the inner wall of the self-locking fixing sleeve, a guide edge is provided on the upper part of the clamping block, and a clamping tooth is provided on the lower part; a self-locking guide ring is arranged in the self-locking fixing sleeve and located at the bottom, a plurality of groups of guide teeth are provided on the upper edge of the self-locking guide ring, the number of the guide teeth is twice the number of the clamping blocks, and the guide teeth and the clamping teeth are staggered, and the staggered angle is half the tooth spacing.

[0011] In the above technical solution, further, a first positioning hole is provided at the upper part of the fixed block and the corresponding position of the sliding column and located in the first direction, and a first locking pin is provided in the first positioning hole; a second positioning hole is provided at the lower part of the fixed block and the upper part of the self-locking pin and located in the second direction, and a second locking pin is provided in the second positioning hole.

[0012] In the above technical solution, further, a guiding structure is provided between the self-locking fixing sleeve and the self-locking guide ring, including a positioning ridge provided at the bottom of the inner wall of the self-locking fixing sleeve and a positioning groove provided on the outer wall of the self-locking guide ring, and a transition fit is formed between the self-locking fixing sleeve and the self-locking guide ring.

[0013] In the above technical solution, further, a fastener is provided on the base plate and is screwed into the support column from the base plate.

[0014] The beneficial effects of the present invention are: the height adjustment function is achieved by using a gas spring in combination with a locking component instead of an electric control method, without the need for complex wires required for electric control, avoiding interference caused by external environmental factors such as line aging and short circuits, and the self-locking structure is simple and more practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0016] Figure 1 It is a stereogram of the initial state of the utility model.

[0017] Figure 2It is a three-dimensional diagram of the adjustment state of the utility model.

[0018] Figure 3 It is an exploded view of the present utility model.

[0019] Figure 4 It is a stereoscopic diagram of the assembly of the sliding column and the gas spring of the utility model.

[0020] Figure 5 This is an exploded view of the assembly of the sliding column and gas spring of the utility model.

[0021] Figure 6 It is a top view of the sliding column of the present utility model.

[0022] Figure 7 This utility model Figure 5 Enlarged view of point A in the middle.

[0023] Figure 8 It is a three-dimensional diagram of the self-locking fixing sleeve of the utility model.

[0024] Figure 9 It is a three-dimensional diagram of the self-locking guide ring of the utility model.

[0025] In the figure, 1. Fixed guardrail, 101. Support column, 1011. Slide groove, 2. Movable guardrail, 201. Slide column, 2011. First area, 2022. Second area, 2023. Third area, 3. Guardrail plate, 4. Gas spring, 41. Cylinder jacket, 42. Cylinder inner rod, 5. Locking assembly, 51. First locking member, 5101. Fixed block, 5102. Self-locking pin, 5103. Self-locking rotating wheel, 5104. Guide block, 5105. Ring Groove, 5106. Annular retaining ring, 5107. Spring, 5108. First positioning hole, 5109. First locking pin, 5110. Second positioning hole, 5111. Second locking pin, 52. Second locking piece, 5201. Self-locking fixing sleeve, 5202. Block, 5203. Guide edge, 5204. Gear, 5205. Self-locking guide ring, 5206. Guide tooth, 5207. Positioning ridge, 5208. Positioning groove, 6. Base plate, 7. Fastener. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection of this application.

[0027] Reference Figure 1-9 As shown, the self-locking lifting guardrail includes a fixed guardrail 1 and a movable guardrail 2 arranged on the fixed guardrail 1, a gas spring 4 is arranged between the fixed guardrail 1 and the movable guardrail 2, and a locking assembly 5 is also provided for controlling the fixed guardrail 1 and the movable guardrail 2 to form a locked state when they are completely overlapped; the locking assembly 5 includes a first locking member 51 arranged on the movable guardrail 2, and a second locking member 52 arranged at the bottom of the fixed guardrail 1.

[0028] Among them, the fixed guardrail 1 is composed of support columns 101 on both sides and a guardrail plate 3 located between the support columns 101. The material of the guardrail plate 3 can be glass, wood, aluminum, etc. A through slide groove 1011 is provided on the support column 101, and a base plate 6 for fixing to the ground is provided at the bottom of the support column 101, which can be fixed by ground nails.

[0029] The movable guardrail 2 includes sliding columns 201 on both sides and the guardrail plate 3 located between the sliding columns 201. The guardrail plates 3 at two locations are consistent. The sliding columns 201 are embedded in the sliding groove 1011 on the support column 101. The sliding columns 201 move in the sliding groove 1011, thereby forming a lifting state of the guardrail. As shown in the L-shaped guardrail in the figure, the pillars at the corners are common pillars.

[0030] Specifically, a first area 2011, a second area 2022, and a third area 2023 are provided in the sliding column 201, and the first area 2011 is a closed shape on all sides. The gas spring 4 is provided in the first area 2011, and the second area 2022 is also a closed shape on all sides. The locking assembly 5 is provided in the second area 2022, and the third area 2023 is a single-sided open shape. One side of the guardrail plate 3 is clamped in the third area 2023. In order to ensure that the guardrail plate 3 does not separate from the sliding column 201, the guardrail plate 3 is interference fit in the third area 2023. Similarly, this structure is provided on the support column 101 for installing the guardrail plate 3 on the support column 101.

[0031] The gas spring 4 includes a cylinder jacket 41 fixedly arranged in the first area 2011, and a cylinder inner rod 42 is arranged in the cylinder jacket 41. The end of the cylinder inner rod 42 is fixed on the base plate 6. In the initial state, the cylinder inner rod 42 is fully extended on the cylinder jacket 41.

[0032] The first locking member 51 and the second locking member 52 cooperate with each other so that when the movable guardrail 2 and the fixed guardrail 1 are completely overlapped, they are locked.

[0033] The first locking member 51 includes a fixing block 5101 located at the bottom and used to fix the first locking member 51 in the second area 2022. A self-locking pin 5102 is provided directly below the fixing block 5101. The upper end of the self-locking pin 5102 is embedded in the fixing block 5101. A self-locking rotating wheel 5103 that can rotate freely on the self-locking pin 5102 is provided at the lower end of the self-locking pin 5102. Guide blocks 5104 are evenly provided on the outer ring wall of the self-locking rotating wheel 5103. The guide block 5104 is triangular in shape, and its triangular guide end is a circumferential guide. In order to prevent the self-locking rotating wheel 5103 from falling off, an annular groove 5105 is provided on the self-locking pin 5102 and below the self-locking rotating wheel 5103. An annular retaining ring 5106 with a diameter larger than that of the self-locking pin 5102 is provided in the annular groove 5105. The self-locking rotating wheel 5103 is placed on the annular retaining ring 5106, and a spring 5107 is provided between the self-locking rotating wheel 5103 and the fixed block 5101.

[0034] A through straight hole is provided on the base plate 6, and the second locking member 52 is embedded in and fixed in the straight hole. The second locking member 52 includes a self-locking fixing sleeve 5201 and a self-locking guide ring 5205. Blocks 5202 are evenly arranged in a ring shape on the upper end of the inner wall of the self-locking fixing sleeve 5201. A guide edge 5203 is provided on the upper part of the block 5202, and a locking tooth 5204 is provided on the lower part. Guide teeth 5206 are provided on the upper edge of the self-locking guide ring 5205, and the number of the guide teeth 5206 is twice the number of the block 5202.

[0035] The function of the spring 5107 is to apply a downward force to the self-locking rotating wheel 5103 to prevent the self-locking rotating wheel 5103 from rotating erroneously when it is not guided. If the spring 5107 is not installed, after the self-locking rotating wheel 5103 passes through the block 5202, the self-locking rotating wheel 5103 may directly enter the determined guide tooth 5206 without being guided, thereby failing to form a locked state.

[0036] The locking teeth 5204 at the lower portion of the locking block 5202 and the guide teeth 5206 are symmetrical in shape, and the two are staggered, with the staggered angle being the spacing of half a tooth.

[0037] In order to ensure that the locking teeth 5204 and the guide teeth 5206 always maintain a half-tooth spacing, a guide structure is provided between the self-locking fixing sleeve 5201 and the self-locking guide ring 5205. The guide structure includes a positioning ridge 5207 provided at the bottom of the inner wall of the self-locking fixing sleeve 5201 and a positioning groove 5208 provided on the outer wall of the self-locking guide ring 5205. Furthermore, the self-locking fixing sleeve 5201 and the self-locking guide ring 5205 are transitionally matched.

[0038] The fixing block 5101 is detachably arranged on the sliding column 201, and the self-locking pin 5102 is detachably arranged on the fixing block 5101. Specifically, a first positioning hole 5108 is arranged on the upper part of the fixing block 5101 and at the corresponding position of the second area 2022 of the sliding column 201, and is located in the first direction, and a first locking pin 5109 is arranged in the positioning hole.

[0039] A second positioning hole 5110 is provided at the lower part of the fixing block 5101 and the upper part of the self-locking pin 5102 and is located in the second direction. The first direction and the second direction are positive directions and are perpendicular to each other. A second locking pin 5111 is provided in the second positioning hole 5110.

[0040] The first locking pin 5109 and the second locking pin 5111 are transitionally fitted in the first positioning hole 5108 and the second positioning hole 5110 .

[0041] In order to ensure that the bottom plate 6 can be fixed on the support column 101 , a fastener 7 is provided on the bottom plate 6 and is screwed in from the bottom plate 6 toward the support column 101 .

[0042] In this embodiment, the guardrail is L-shaped, and the locking components 5 are installed at both ends of the L-shape. If it is a straight-line guardrail, the locking components 5 are also provided in two groups and located on both sides.

[0043] The working process of the present invention is as follows: in the initial state, the movable guardrail 2 is in a stretched state on the fixed guardrail 1, and the movable guardrail 2 is pressed down at the upper edge of the movable guardrail 2. When the movable guardrail 2 is pressed down to the bottom of the fixed guardrail 1, first, the self-locking rotating wheel 5103 enters the self-locking fixed sleeve 5201 from top to bottom, and the guide block 5104 on the self-locking rotating wheel 5103 contacts the guide edge 5203 on the upper part of the clamping block 5202. Then, the self-locking rotating wheel 5103 is guided by the guide edge 5203 to rotate and enter the gap between the two adjacent groups of the clamping blocks 5202. This gap matches the width of the clamping block 5202. After sliding down along this gap, the lower end of the triangular side of the guide block 5104 contacts the guide tooth 5206, causing the guide block 5104 to rotate and move along the guide tooth 5206. 06 to the bottom of the tooth. When the movable guardrail 2 is released and pressed, the gas spring 4 is used to make the movable guardrail 2 rebound. At this time, the movable guardrail 2 drives the self-locking rotating wheel 5103 to move upward, and the upper end of the triangular edge of the guide block 5104 contacts the edge of the tooth 5204 at the lower part of the clamping block 5202, so that the guide block 5104 rotates again and moves along the clamping tooth 5204. The upper end of the triangular edge of the guide block 5104 completely enters the clamping tooth 5204. At this time, the movable guardrail 2 forms a locked state on the fixed guardrail 1. When unlocking, the movable guardrail 2 is pressed again, and the lower end of the triangular edge of the guide block 5104 cooperates with the guide tooth 5206 again. After releasing the pressing, the guide block 5104 rotates, and the guide block 5104 moves upward along the gap between the clamping blocks 5202, disengages from the fixed guide sleeve, and the movable guardrail 2 is reset.

[0044] Thus far, various embodiments of the present application have been described in detail. To avoid obscuring the concept of the present application, some details well known in the art have not been described. Based on the above description, those skilled in the art will fully understand how to implement the technical solutions disclosed herein.

[0045] Finally, it should be noted that the above is only a preferred embodiment of the present application, and the aforementioned embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not drive the essence of the corresponding technical solutions away from the spirit and scope of the technical solutions of the various embodiments of the present application.

Claims

1. A self-locking lifting guardrail, comprising a fixed guardrail and a movable guardrail arranged on the fixed guardrail, characterized in that: A gas spring is provided between the fixed guardrail and the movable guardrail, and a locking assembly is also provided for controlling the fixed guardrail and the movable guardrail to form a locked state when they are completely overlapped; The locking assembly includes a first locking member provided on the movable guardrail and a second locking member provided at the bottom of the fixed guardrail; The fixed guardrail includes support columns on both sides and a guardrail plate located between the support columns, a slide groove is provided in the support columns, and a bottom plate is provided at the bottom of the support columns; The movable guardrail includes sliding posts on both sides and the guardrail plate located between the sliding posts, and the sliding posts are placed in the sliding groove; The sliding column is provided with a first area, a second area, and a third area which are connected to each other; The first area is in a closed state on all sides, and the gas spring is arranged in the first area; The second area is in a closed state on all sides, and the locking assembly is arranged in the second area; The third area is in a single-side opening state, and the side edge of the guardrail plate is clamped in the third area; The gas spring comprises a cylinder outer sleeve fixedly arranged in the first area, and a cylinder inner rod with an end fixed to the base plate; The first locking member is arranged at the bottom end of the second area, and the second locking member is fixedly arranged on the bottom plate; The first locking member comprises, for fixing the first locking member to a fixing block in the second area; a self-locking pin provided on the fixing block and facing directly downward; The lower end of the self-locking pin is provided with a self-locking rotating wheel, and a guide block is evenly arranged on the peripheral wall of the self-locking rotating wheel in an annular shape. The guide block is triangular in shape and the guide tip is circumferentially guided; An annular groove is provided on the self-locking pin and below the self-locking rotating wheel, and an annular retaining ring is provided in the annular groove; a spring is provided between the self-locking rotating wheel and the fixed block; The second locking member comprises, A self-locking fixing sleeve fixed on the bottom plate, wherein the upper end of the inner wall of the self-locking fixing sleeve is evenly and annularly provided with a plurality of groups of clamping blocks, wherein the upper portion of the clamping blocks is provided with a guide edge and the lower portion is provided with a clamping tooth; A self-locking guide ring is arranged in the self-locking fixing sleeve and located at the bottom. Several groups of guide teeth are arranged on the upper edge of the self-locking guide ring. The number of the guide teeth is twice the number of the clamping blocks. The guide teeth and the clamping teeth are staggered, and the staggered angle is half the tooth spacing.

2. The self-locking lifting guardrail according to claim 1, characterized in that: A first positioning hole is provided at the upper portion of the fixing block and at a corresponding position of the sliding post and located in the first direction, and a first locking pin is provided in the first positioning hole; A second positioning hole is provided at the lower portion of the fixing block and the upper portion of the self-locking pin and is located in the second direction, and a second locking pin is provided in the second positioning hole.

3. The self-locking lifting guardrail according to claim 1, characterized in that: A guiding structure is provided between the self-locking fixing sleeve and the self-locking guide ring, including a positioning ridge provided at the bottom of the inner wall of the self-locking fixing sleeve and a positioning groove provided on the outer wall of the self-locking guide ring. The self-locking fixing sleeve and the self-locking guide ring are in transition fit.

4. The self-locking lifting guardrail according to claim 1, characterized in that: The bottom plate is provided with a fastener which is screwed into the direction from the bottom plate toward the support column.

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