A building guardrail

Abstract

The present application relates to the technical field of building guardrails, and in particular to a building guardrail, comprising a plurality of support rods placed on the ground, a plurality of groups of blocking rods arranged between two adjacent support rods, the plurality of groups of blocking rods arranged in an array along the length direction of the support rods, a slide groove being provided at one end of the support rods away from the ground, a slide rod being provided in the slide groove along the length direction of the support rods for sliding, a top rod being provided at one end of the slide rods away from the ground, and the top rod being connected to a plurality of connecting rods at the same time. The present application has the effect of increasing the scope of application of the guardrail.

Description

Technical Field

[0001] The present application relates to the technical field of building guardrails, and in particular to a building guardrail. Background Art

[0002] Building guardrails refer to protective fences placed around construction sites to enclose construction areas, protect construction workers and equipment and facilities at the construction site, and prevent pedestrians or vehicles from mistakenly entering the construction site, thereby ensuring the safety of construction.

[0003] The structure of the building guardrail in the related art includes two support rods and a barrier rod arranged between the support rods, one end of the support rod is provided with a base, the support rod is placed on the ground through the base, and the barrier rod is arranged between the two support rods. There are multiple barrier rods, and the multiple barrier rods are arranged at intervals along the vertical direction between the support rods. The construction site is fenced by placing the support rods and the barrier rods at the edge of the construction area.

[0004] In the above-mentioned related technologies, the height of the support rod is fixed, which is inconvenient to adjust according to different construction site requirements and has a limited scope of application. Summary of the invention

[0005] In order to improve the application scope of the guardrail, the present application provides a building guardrail.

[0006] The application provides a building guardrail adopting the following technical solution:

[0007] A building guardrail includes a plurality of support rods placed on the ground, a plurality of groups of barrier rods are arranged between two adjacent support rods, the plurality of groups of barrier rods are arranged in an array along the length direction of the support rods, a slide groove is provided at one end of the support rod facing away from the ground, a sliding rod is slidably arranged in the slide groove along the length direction of the support rod, a top rod is provided at one end of the sliding rod facing away from the ground, and the top rod is connected to a plurality of sliding rods at the same time.

[0008] By adopting the above technical solution, a sliding rod is set to slide in a sliding groove, and a top rod is set on the sliding rod. When the height of the enclosure needs to be adjusted, the sliding rod is driven by the top rod to slide in the sliding groove, and the distance between the top rod and the ground is adjusted, that is, the height of the enclosure is adjusted, thereby improving the applicability of the guardrail.

[0009] Optionally, an auxiliary rod is provided on one side of the sliding rod close to the adjacent support rod, a mounting block is provided on the end of the sliding rod close to the ground, the end of the auxiliary rod is rotatably arranged on the mounting block, and a clearance groove for placing the auxiliary rod is opened on the side of the sliding rod.

[0010] By adopting the above technical solution, an auxiliary rod is set after the sliding rod slides to the outside of the sliding groove, and the auxiliary rod is used to block the distance between the two sliding rods, thereby improving the enclosure effect.

[0011] Optionally, a through hole is provided on the mounting block, and a guide assembly is provided in the slide groove, the guide assembly includes a mounting rod and a guide rod, the mounting rod is arranged in the slide groove along the sliding direction of the slide rod, the mounting rod passes through the through hole, the guide rod is arranged at one end of the mounting rod close to the mounting block, the side surface of the guide rod abuts against the auxiliary rod, and the center line of the guide rod and the rotation axis of the auxiliary rod are staggered in the vertical direction to drive the auxiliary rod to rotate toward the outside of the give way groove.

[0012] By adopting the above technical solution, when the slide rod is slid, the side of the auxiliary rod abuts against the guide rod, and under the action of the guide rod, the auxiliary rod is driven to rotate, so that the auxiliary rod can be adjusted to a specified position while the slide rod is sliding, thereby improving installation efficiency.

[0013] Optionally, the distance between the two support rods is smaller than the sum of the lengths of the two auxiliary rods, a stop block is provided at one end of the auxiliary rod facing away from the mounting block, the stop blocks on the two auxiliary rods are in contact with each other, and an insert block and a slot are respectively provided on the two stop blocks, the insert block and the slot are respectively provided on one side of the stop blocks close to each other, the insert block is inserted in the slot, a placement groove is provided on the inner wall of the slot, and a limiting component for fixing the insert block is provided in the placement groove.

[0014] By adopting the above technical solution, after the abutment block abuts, the position of the auxiliary rod is fixed by the limiting assembly, thereby improving the stability of the enclosure, while reducing the sliding of the slide bar into the slide groove, fixing the position of the slide bar, and further improving the overall stability.

[0015] Optionally, the limit assembly includes a limit block and an elastic member, the limit block is slidably arranged in the placement slot along the direction toward the slot, the elastic member is arranged in the placement slot and connected to the limit block for adjusting the position of the limit block, the insert block is provided with a limit slot, and the limit block is provided with a guiding slope for cooperating with the insert block to adjust the position of the limit block.

[0016] By adopting the above technical solution, after the insert block moves to the specified position, the elastic member drives the insert block and the slot to engage, fix the insert block in the slot, and then fix the two adjacent auxiliary rods.

[0017] Optionally, the adjusting rod is provided with an adjusting groove connected to the placing groove, and an adjusting assembly is arranged in the adjusting groove, and the adjusting assembly includes an adjusting rod, an oblique rod and an adjusting sleeve, and the adjusting sleeve is arranged on the side of the limit block close to the elastic member, and the adjusting rod is slidably arranged in the adjusting groove along the length direction of the auxiliary rod, and the oblique rod is obliquely arranged at the end of the adjusting rod, and the oblique rod is inserted into the adjusting sleeve and abuts against the inner wall of the adjusting sleeve.

[0018] By adopting the above technical solution, when it is necessary to separate the plug block and the slot, the adjusting rod is moved, and the adjusting rod drives the inclined rod to move, and the adjusting sleeve abuts against the inclined rod at different positions, and the limiting block is driven by the adjusting sleeve to move in a direction away from the limiting slot until it is separated from the limiting slot, thereby releasing the restriction on the plug block so that the two auxiliary rods can be separated and retracted.

[0019] Optionally, a bending portion is provided at one end of the adjusting rod facing away from the adjusting sleeve, and a control assembly is provided in the give way groove, the control assembly includes a control rod, a guide plate and a buckle plate, the control rod is arranged in the give way groove, the guide plate is inclined at the end of the control rod, the side of the guide plate abuts against the bending portion, the control rod is slidably arranged in the give way groove for adjusting the position of the adjusting rod, and the buckle plate is arranged at one end of the control rod facing away from the guide plate.

[0020] By adopting the above technical solution, the position of the guide plate is adjusted through the buckle plate and the control rod, and then the position of the adjustment rod is adjusted through the bending part, thereby adjusting the position of the limit block.

[0021] Optionally, a buckle groove connected to the give-way groove is provided on the outer side of the slide rod, and the buckle plate is arranged in the buckle groove.

[0022] By adopting the above technical solution, a buckle groove is provided so that the position of the buckle plate can be adjusted through the buckle groove, thereby improving the convenience of adjustment so that the whole can be folded up.

[0023] Optionally, the baffle rod and the support rod are rotatably connected, each group of the baffle rods are rotatably connected, the top rod includes multiple groups of connecting rods, each group of the connecting rods is respectively arranged between every two adjacent support rods, each group of the connecting rods includes two, two of the connecting rods are rotatably connected, the connecting rod and the support rod are rotatably connected, the rotation axes of the two connecting rods are arranged on the side of the connecting rod away from the support rod, and the rotation axes of the connecting rod and the support rod are arranged at the edge of one side of the support rod close to the adjacent support rod.

[0024] By adopting the above technical solution, the connecting rod is rotatably arranged so that the rotating connecting rod can be retracted as a whole to reduce the occupied space. At the same time, the rotating axis of the connecting rod is arranged at different positions so that when the connecting rod rotates to the same straight line, the ends of the connecting rod abut and stop rotating, so that the position of the sliding rod can be adjusted by lifting the connecting rod.

[0025] Optionally, a middle groove is formed through the connecting rod, and the middle groove and the auxiliary rod are arranged correspondingly in the vertical direction.

[0026] By adopting the above technical solution, when the connecting rod is rotated to retract the connecting rod, the auxiliary rod that has not completely entered the clearance groove enters the middle groove, thereby reducing the phenomenon that the auxiliary rod interferes with the rotation of the connecting rod.

[0027] In summary, the present application includes at least one of the following beneficial technical effects:

[0028] 1. By adjusting the position of the sliding rod in the slide groove and rotating the auxiliary rod to the outside of the slide groove, the gap between the sliding rods can be blocked, and then the height of the enclosure can be adjusted according to different construction environments to improve the use range of the guardrail. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the structure of the building guardrail of an embodiment of the present application.

[0030] Figure 2 It is a partial view of the building guardrail of an embodiment of the present application.

[0031] Figure 3 It is a cut-away view of a sliding rod in a building guardrail according to an embodiment of the present application.

[0032] Figure 4 It is a structural view of the control component in the building guardrail of an embodiment of the present application.

[0033] Figure 5 It is a structural view of the installation block in the building guardrail of an embodiment of the present application.

[0034] Figure 6 It is a structural view of the stop block in the building guardrail of an embodiment of the present application.

[0035] Figure 7 It is a cut-away view of an auxiliary rod in a building guardrail according to an embodiment of the present application.

[0036] Figure 8 It is a structural view of the adjustment component in the building guardrail of an embodiment of the present application.

[0037] Fig. 9 This is a structural view of the top rod in the building guardrail of an embodiment of the present application.

[0038] 1. Support rod; 11. Stop rod; 12. Slide groove; 2. Slide rod; 21. Mounting block; 211. Through hole; 22. Give way groove; 23. Buckle groove; 3. Auxiliary rod; 31. Block; 32. Insert block; 321. Limiting groove; 33. Slot; 4. Guide assembly; 41. Mounting rod; 42. Guide rod; 5. Push rod; 51. Connecting rod; 511. Middle groove; 6. Placement groove; 61. Adjustment groove; 7. Limiting assembly; 71. Limiting block; 711. Guide slope; 72. Elastic member; 8. Adjustment assembly; 81. Adjustment rod; 811. Bending portion; 82. Diagonal rod; 83. Adjustment sleeve; 9. Control assembly; 91. Control rod; 92. Guide plate; 93. Buckle plate. DETAILED DESCRIPTION

[0039] The following is combined with Figure 1-9 This application is described in further detail.

[0040] The present application discloses a building guardrail. Figure 1 and Figure 2 The building guardrail includes a plurality of support rods 1, the plurality of support rods 1 are arranged at intervals, and the plurality of support rods 1 are arranged in the same plane, a plurality of groups of rotatably connected blocking rods 11 are arranged between the support rods 1, the blocking rods 11 are arranged between two adjacent support rods 1, and the plurality of groups of blocking rods 11 are arranged along the length direction of the support rods 1, the blocking rods 11 and the support rods 1 are rotatably connected, and the ends of the support rods 1 are buried around the construction site, and the construction site is fenced by the blocking rods 11 and the support rods 1.

[0041] Reference Figure 2 and Figure 3 A slide groove 12 is provided at one end of the support rod 1 away from the ground, a slide rod 2 is slidably provided in the slide groove 12 along the length direction of the support rod 1, and an auxiliary rod 3 is provided on the side of the slide rod 2 close to the adjacent support rod 1. The slide rod 2 is slid toward the outside of the slide groove 12 to extend the slide rod 2 out of the slide groove 12, and the auxiliary rod 3 is used to block the distance between two adjacent slide rods 2, thereby adjusting the height of the overall enclosure.

[0042] A mounting block 21 is provided at one end of the slide bar 2 close to the ground, and the end of the auxiliary rod 3 is rotatably provided on the mounting block 21. The plane where the auxiliary rod 3 rotates is in the same plane as the support rod 1, and a clearance groove 22 is provided on the slide bar 2. In the initial state, the slide bar 2 is in the slide groove 12, and the auxiliary rod 3 is in the clearance groove 22. When the height of the enclosure needs to be adjusted, when the slide bar 2 is slid to the outside of the slide groove 12, the auxiliary rod 3 is rotated to the outside of the clearance groove 22 for blocking.

[0043] Reference Figure 4 and Figure 5 In order to facilitate the adjustment of the position of the auxiliary rod 3 after the slide bar 2 moves to the outside of the slide slot 12, a guide assembly 4 is arranged in the slide slot 12. The guide assembly 4 includes a mounting rod 41 and a guide rod 42. The mounting rod 41 is arranged in the slide slot 12 along the length direction of the slide bar 2. A through hole 211 is provided on the mounting block 21 in the vertical direction. The end of the mounting rod 41 passes through the through hole 211 and extends to the side of the mounting block 21 away from the ground. The guide rod 42 is arranged at the end of the mounting rod 41 away from the ground. The side of the guide rod 42 abuts against the auxiliary rod 3. The center line of the guide rod 42 and the rotation axis of the auxiliary rod 3 are offset in the vertical direction. That is, when the mounting block 21 is slid, the guide rod 42 abuts against different positions on the auxiliary rod 3, driving the auxiliary rod 3 to rotate in the direction toward the outside of the give way slot 22. During installation, the position of the auxiliary rod 3 is adjusted by the guide rod 42 while the slide bar 2 is slid, thereby improving the installation efficiency.

[0044] Reference Figure 3 and Figure 4 A top rod 5 is provided at one end of the slide rod 2 away from the support rod 1, and the top rod 5 is connected to multiple slide rods 2 at the same time. Figure 6 A stopper 31 is provided at one end of the auxiliary rod 3 away from the mounting block 21, and after the support rods 1 are unfolded, the distance between the two support rods 1 is less than the sum of the lengths of the two auxiliary rods 3. The positions of the plurality of slide rods 2 are adjusted simultaneously by the top rod 5, and the auxiliary rod 3 rotates at the same time until the stopper 31 rotates to abut against the stopper 31 on the adjacent support rod 1, thereby blocking the gap between the support rods 1.

[0045] Reference Figure 6 and Figure 7 An insert block 32 and a slot 33 are respectively provided on the two abutting blocks 31, that is, an insert block 32 is provided on one block 31, and a slot 33 is provided on the other block 31. The insert block 32 and the slot 33 are provided on one side of the block 31 close to each other. The insert block 32 is inserted in the slot 33, and a placement groove 6 is provided on the inner wall of the slot 33, and a limiting component 7 is provided in the placement groove 6. The limit assembly 7 includes a limit block 71 and an elastic member 72. The limit block 71 is slidably arranged in the placement groove 6 in the direction toward the slot 33, and a guiding inclined surface 711 is arranged on the limit block 71. The elastic member 72 can be arranged as a spring, one end of the spring abuts against the inner wall of the placement groove 6, and the other end is connected to the limit block 71. The elastic member 72 is used to drive the limit block 71 to slide in the direction toward the slot 33. A limit groove 321 is provided on the side of the insertion block 32 close to the placement groove 6, and the limit block 71 and the limit groove 321 are engaged to fix the insertion block 32.

[0046] When the locking cam 73 is in the unlocking state, the locking cam 73 will be in the unlocking state, and the locking cam 73 will be in the unlocking state, so that the locking cam 73 will be locked in the unlocking state.

[0047] Reference Figure 7 and Figure 8An adjustment slot 61 is provided at one end of the auxiliary rod 3 away from the stop block 31. The adjustment slot 61 is arranged along the length direction of the auxiliary rod 3. The adjustment slot 61 is connected to the placement slot 6. An adjustment assembly 8 is arranged in the adjustment slot 61. The adjustment assembly 8 includes an adjustment rod 81, an inclined rod 82 and an adjustment sleeve 83. The adjustment sleeve 83 is arranged on the side of the limit block 71 close to the elastic member 72. The adjustment rod 81 is slidably arranged in the adjustment slot 61 along the length direction of the adjustment slot 61. The inclined rod 82 is arranged at the end of the adjustment rod 81, and the end of the inclined rod 82 away from the adjustment rod 81 is arranged at intervals from the adjustment rod 81, that is, the inclined rod 82 is inclinedly arranged on the adjustment rod 81, and one end of the inclined rod 82 is inserted into the adjustment sleeve 83. The adjustment rod 81 is slid, and the adjustment rod 81 drives the different positions of the inclined rod 82 to abut against the adjustment sleeve 83, and drives the limit block 71 to move in the direction toward the placement slot 6 until the limit block 71 and the limit slot 321 are separated, and the restriction on the insertion block 32 is released, so that the auxiliary rod 3 can be retracted.

[0048] Reference Figure 4 and Figure 6 , one end of the adjusting rod 81 away from the limit block 71 extends to the outside of the adjusting slot 61, and a control component 9 is arranged in the give way slot 22, and the control component 9 includes a control rod 91, a guide plate 92 and a buckle plate 93. The control rod 91 is slidably arranged along the length direction of the give way slot 22, and the guide plate 92 is arranged at the end of the control rod 91, and the guide plate 92 is inclined at the end of the control rod 91, and the buckle plate 93 is arranged at the end of the control rod 91 away from the guide plate 92. A buckle slot 23 is penetrated and opened on the side of the slide bar 2, and the buckle slot 23 is connected with the give way slot 22. The buckle plate 93 is arranged in the buckle slot 23, and a bending portion 811 is arranged at the end of the adjusting rod 81. The bending portion 811 is bent in the direction toward the guide plate 92, and the bending portion 811 abuts against the side of the guide plate 92, so that when the guide plate 92 is moved, the position of the adjusting rod 81 is adjusted by the guide plate 92 and the bending portion 811. By moving the buckle plate 93 , the bending portion 811 is driven to move through the control rod 91 and the guide plate 92 , thereby adjusting the position of the adjustment rod 81 .

[0049] Reference Fig. 9, the top rod 5 is provided with a plurality of connecting rods 51, and the connecting rods 51 are provided with a plurality of groups, and the plurality of connecting rods 51 are respectively provided between each two adjacent support rods 1, and each group of connecting rods 51 includes two connecting rods, and the two connecting rods 51 are rotationally connected, and the connecting rods 51 and the ends of the sliding rods 2 are rotationally connected, and the rotation connection between the connecting rods 51 is provided on the side of the connecting rods 51 away from the support rods 1, and the rotation connection between the connecting rods 51 and the support rods 1 is provided at the top of the support rods 1 near the edge of another support rod 1. In order to rotate the connecting rods 51, the blocking rods 11 are rotated at the same time, and the connecting rods 51 are rotated to be retracted between the support rods 1, and when they are rotated to be unfolded, the ends of the connecting rods 51 abut against each other, that is, after the two connecting rods 51 are rotated to be in the same straight line, the connecting rods 51 no longer rotate at this time, and the position of the sliding rod 2 can be adjusted by lifting the connecting rods 51 in the direction away from the ground.

[0050] Reference Fig. 9 A middle groove 511 is provided on the connecting rod 51. After the connecting rod 51 is unfolded, the middle groove 511 and the auxiliary rod 3 correspond to each other in the vertical direction. When the connecting rod 51 is rotated to be retracted, the auxiliary rod 3 rotates into the middle groove 511 when it is fully rotated into the give way groove 22, thereby reducing the phenomenon that the auxiliary rod 3 interferes with the retraction of the connecting rod 51.

[0051] The implementation principle of the present application is: unfold the support rod 1, and at the same time, multiple connecting rods 51 are rotated to the same straight line, and then the sliding rod 2 is pulled to move by the connecting rod 51. While the sliding rod 2 moves, it drives the auxiliary rod 3 to rotate through the guide rod 42 until the insert block 32 is inserted into the slot 33, so as to adjust the height of the enclosure to adapt to different construction environments and improve the scope of use of the guardrail.

[0052] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A building guardrail, characterized in that: It comprises a plurality of support rods (1) placed on the ground, a plurality of groups of blocking rods (11) are arranged between two adjacent support rods (1), the plurality of groups of blocking rods (11) are arranged in an array along the length direction of the support rods (1), a slide groove (12) is provided at one end of the support rod (1) away from the ground, a slide rod (2) is slidably arranged in the slide groove (12) along the length direction of the support rod (1), a top rod (5) is provided at one end of the slide rod (2) away from the ground, and the top rod (5) is simultaneously connected to the plurality of slide rods (2); An auxiliary rod (3) is arranged on one side of the slide rod (2) close to the adjacent support rod (1); a mounting block (21) is arranged on one end of the slide rod (2) close to the ground; an end of the auxiliary rod (3) is rotatably arranged on the mounting block (21); and a clearance groove (22) for placing the auxiliary rod (3) is provided on the side of the slide rod (2); The mounting block (21) is provided with a through hole (211), and a guide assembly (4) is arranged in the slide groove (12). The guide assembly (4) comprises a mounting rod (41) and a guide rod (42). The mounting rod (41) is arranged in the slide groove (12) along the sliding direction of the slide rod (2), and the mounting rod (41) passes through the through hole (211). The guide rod (42) is arranged at one end of the mounting rod (41) close to the mounting block (21). The side surface of the guide rod (42) abuts against the auxiliary rod (3). The center line of the guide rod (42) and the rotation axis of the auxiliary rod (3) are staggered in the vertical direction to drive the auxiliary rod (3) to rotate toward the outside of the clearance groove (22); The spacing between the two support rods (1) is smaller than the sum of the lengths of the two auxiliary rods (3); an end of the auxiliary rod (3) facing away from the mounting block (21) is provided with a stop block (31); the stop blocks (31) on the two auxiliary rods (3) abut against each other; an insert block (32) and a slot (33) are respectively provided on the two stop blocks (31); the insert block (32) and the slot (33) are respectively provided on one side of the stop blocks (31) close to each other; the insert block (32) is inserted into the slot (33); a placement groove (6) is provided on an inner wall of the slot (33); a limiting component (7) for fixing the insert block (32) is provided in the placement groove (6).

2. The building guardrail according to claim 1, characterized in that: The limit assembly (7) comprises a limit block (71) and an elastic member (72); the limit block (71) is slidably arranged in the placement groove (6) along a direction toward the slot (33); the elastic member (72) is arranged in the placement groove (6) and connected to the limit block (71) for adjusting the position of the limit block (71); the insert block (32) is provided with a limit groove (321); and the limit block (71) is provided with a guiding inclined surface (711) for cooperating with the insert block (32) to adjust the position of the limit block (71).

3. The building guardrail according to claim 2, characterized in that: The auxiliary rod (3) is provided with an adjustment groove (61) which is connected to the placement groove (6). An adjustment assembly (8) is arranged in the adjustment groove (61). The adjustment assembly (8) comprises an adjustment rod (81), an inclined rod (82) and an adjustment sleeve (83). The adjustment sleeve (83) is arranged on a side of the limit block (71) close to the elastic member (72). The adjustment rod (81) is slidably arranged in the adjustment groove (61) along the length direction of the auxiliary rod (3). The inclined rod (82) is obliquely arranged at the end of the adjustment rod (81). The inclined rod (82) is inserted into the adjustment sleeve (83) and abuts against the inner wall of the adjustment sleeve (83).

4. The building guardrail according to claim 3, characterized in that: A bent portion (811) is provided at one end of the adjusting rod (81) away from the adjusting sleeve (83); a control assembly (9) is provided in the clearance groove (22); the control assembly (9) comprises a control rod (91), a guide plate (92) and a buckle plate (93); the control rod (91) is provided in the clearance groove (22); the guide plate (92) is obliquely provided at the end of the control rod (91); a side surface of the guide plate (92) abuts against the bent portion (811); the control rod (91) is slidably provided in the clearance groove (22) for adjusting the position of the adjusting rod (81); and the buckle plate (93) is provided at one end of the control rod (91) away from the guide plate (92).

5. The building guardrail according to claim 4, characterized in that: A buckle groove (23) communicating with the clearance groove (22) is formed on the outer side of the slide bar (2), and the buckle plate (93) is arranged in the buckle groove (23).

6. The building guardrail according to claim 1, characterized in that: The blocking rod (11) and the support rod (1) are rotatably connected, and each group of the blocking rods (11) are rotatably connected to each other. The top rod (5) includes a plurality of groups of connecting rods (51), and each group of the connecting rods (51) is respectively arranged between every two adjacent support rods (1). Each group of the connecting rods (51) includes two connecting rods, and the two connecting rods (51) are rotatably connected to each other. The connecting rods (51) and the support rod (1) are rotatably connected, and the rotation axes of the two connecting rods (51) are arranged on a side of the connecting rod (51) away from the support rod (1), and the rotation axes of the connecting rod (51) and the support rod (1) are arranged at a side edge of the support rod (1) close to the adjacent support rod (1).

7. The building guardrail according to claim 6, characterized in that: The connecting rod (51) is provided with a middle groove (511) extending therethrough, and the middle groove (511) and the auxiliary rod (3) are arranged correspondingly in the vertical direction.

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