Protective fence for building construction

Abstract

The utility model discloses a protective fence for building construction, and belongs to the technical field of building construction equipment. Comprising a first stand column and a second stand column which are adjacent to each other, a net-shaped protective fence with the length capable of being changed exists between the first stand column and the second stand column, and the side wall, close to the second stand column, of the first stand column is provided with an outlet allowing the net-shaped protective fence to penetrate through conveniently; and a winding mechanism for winding the net-shaped protective fence is mounted in the cavity. The net-shaped protective fence can adapt to the uneven construction ground, due to the fact that the net-shaped protective fence has certain elasticity, the overall installation structure of the protective fence is not affected when the ground unevenness is within a certain degree, in addition, the net-shaped protective fence is stored in the first stand column firstly, preassembling of the protective fence can be achieved, and the net-shaped protective fence can be installed conveniently. The first stand column is directly fixed on a sports construction site, then the net-shaped protective fence is pulled, and installation is more convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of building construction equipment, and more specifically, to a guardrail for building construction. Background Art

[0002] Special safety fences used for construction are also called construction fences. It is essential to protect the safety of buildings. There are two main types of fences usually used in construction. They are mesh foundation fences and riser foundation pit guardrails. Mesh foundation guardrails are cheaper than riser foundation guardrails, have low cost and have general protection functions.

[0003] The Chinese patent document with publication number CN115288517A in the prior art provides a safety guardrail for construction, including: a guardrail structure, including a pair of columns, an upper beam and a lower beam arranged on the upper and lower sides of a single column; a connection structure, including an adjustment stud and a support rod; a locking mechanism, including a first sliding block and a second sliding block respectively arranged on both sides of the adjustment stud, a third sliding block arranged on one side of the support rod and located at the lower end of the first sliding block, a fourth sliding block arranged on the other side of the support rod and located at the lower end of the second sliding block, a first connecting plate hinged to the first sliding block and the fourth sliding block at both ends, a second connecting plate hinged to the second sliding block and the third sliding block at both ends, the first connecting plate and the second connecting plate overlap in the middle and are connected by a hinge; the hinge is used to fix the first connecting plate and the second connecting plate by locking the angle formed by the first connecting plate and the second connecting plate. The invention has the advantages of high installation efficiency, high flexibility and strong practicality.

[0004] Although the device has many beneficial effects, the following problems still exist: the guardrail needs to transport the parts to the construction site first, and then assemble and fix them. This process takes a lot of time and construction workers to operate. In view of this, we propose a guardrail for construction. Utility Model Content

[0005] 1. Technical issues to be solved

[0006] The purpose of the utility model is to provide a guardrail for construction. By first storing the mesh guardrail inside the first column, the guardrail can be pre-installed, the first column can be directly fixed to the mobile construction site, and then the mesh guardrail can be pulled to solve the problems raised in the above-mentioned background technology.

[0007] 2. Technical solution

[0008] A guardrail for construction, comprising a first column and a second column adjacent to each other, a mesh guardrail of variable length being provided between the first column and the second column, a side wall of the first column close to the second column being provided with an inlet and outlet for the mesh guardrail to pass through, the interior of the first column being arranged as a cavity, and a retracting mechanism for retracting the mesh guardrail being installed in the cavity, one end of the retracted mesh guardrail being wound around the retracting mechanism, and the other end of the retracted mesh guardrail being fixedly connected to the side wall of the second column;

[0009] The retracting mechanism comprises a retracting shaft located in the first column cavity, the bottom end of the retracting shaft is rotatably connected to the inner bottom wall of the first column cavity, and the mesh guardrail is wound around the outside of the retracting shaft.

[0010] Preferably, a connecting shaft is installed at the top end of the winding shaft, a top plate for sealing the internal cavity of the first column is installed above the first column, and the connecting shaft is rotatably connected to the inner bottom wall of the top plate.

[0011] Preferably, a return spring is installed and wound around the outside of the connecting shaft, the top end of the return spring is fixedly connected to the top plate, and the bottom end of the return spring is fixedly connected to the top end of the winding shaft.

[0012] Preferably, the top end of the reset spring is connected to the upper end, the upper end is integrally cast with the reset spring, a lower end ring block is provided on the inner top wall of the top plate at a position corresponding to the upper end, and the upper end is inserted into the lower end ring block.

[0013] Preferably, the bottom end of the return spring is rotatably connected to the lower end ring block, and two annular plates are distributed inside and outside the top of the winding shaft concentrically, and the two annular plates form a limiting groove for facilitating the sliding of the lower end ring block, and the lower end ring block is located inside the limiting groove.

[0014] Preferably, a corrugated fixing groove distributed in a wavy array around the connecting shaft as the center is formed inside the limiting groove, and a fixing hole is formed through the surface of the ring block at the lower end, and a fixing pin is installed inside the fixing hole.

[0015] Preferably, the outer diameter of the fixing pin is equal to the inner diameter of the fixing hole, the inner wall diameter of the corrugated fixing groove is equal to the outer diameter of the fixing pin, and friction lines are provided on the inner wall of the corrugated fixing groove and the outer wall of the fixing pin.

[0016] 3. Beneficial effects

[0017] Compared with the prior art, the advantages of the present invention are:

[0018] 1. Compared with the existing steel plate guardrails, the overall structure designed by the utility model can adapt to uneven construction ground, because the mesh guardrail has a certain elasticity. Therefore, the unevenness of the ground is within a certain degree and does not affect the installation of the overall structure of the guardrail. In addition, by first storing the mesh guardrail inside the first column, the guardrail can be pre-installed, the first column can be directly fixed at the mobile construction site, and then the mesh guardrail can be pulled, which is more convenient to install.

[0019] 2. The utility model can transform the impact force on the mesh guardrail into the resistance of the rotational friction of the retracting shaft and the elastic force generated by the elastic deformation of the reset spring through the mutual cooperation and working effect between the reset spring, the limit groove, the corrugated fixing groove, the fixing hole and the fixing pin, so as to achieve the buffering effect of the mesh guardrail against the impact. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 It is a schematic diagram of the overall structure of the first column of the utility model;

[0022] Figure 3 This is a schematic diagram of the internal structure of the first column of the utility model;

[0023] Figure 4 It is a schematic diagram of the partial structure disassembly of the utility model;

[0024] Figure 5 This is a schematic diagram of the structure of the utility model when the reset spring is installed outside the connecting shaft;

[0025] Figure 6 For this utility model Figure 5 A magnified view of the structure at center;

[0026] Explanation of the numbers in the figure: 1. first column; 2. mesh guardrail; 3. cashier port; 4. reeling shaft; 5. connecting shaft; 6. top plate; 7. reset spring; 8. upper end; 9. lower end ring block; 10. limit groove; 11. corrugated fixing groove; 12. fixing hole; 13. fixing pin; 14. second column. DETAILED DESCRIPTION

[0027] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0028] In the description of the present invention, "plurality" means two or more than two, unless otherwise clearly and specifically defined.

[0029] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0030] See also Figure 1-6 ,The utility model provides a technical solution:

[0031] A guardrail for building construction, comprising a first column 1 and a second column 14 adjacent to each other, a mesh guardrail 2 of variable length is disposed between the first column 1 and the second column 14, the length of the mesh guardrail 2 between the first column 1 and the second column 14 can be changed according to the size of the construction site, an inlet 3 is provided on the side wall of the first column 1 close to the second column 14 for facilitating the mesh guardrail 2 to pass through, the opening of the inlet 3 is expanded from the inside to the outside, thereby facilitating the entry and exit of the inlet 3, the interior of the first column 1 is configured as a cavity, and a reeling mechanism for reeling in the mesh guardrail 2 is installed in the cavity, one end of the reeling mesh guardrail 2 is wound around the reeling mechanism, and the other end of the reeling mesh guardrail 2 is fixedly connected to the side wall of the second column 14, the first column 1 is first fixed at a designated position by an anchor bolt, and then the second column 14 is moved, thereby moving the second column 14 to the designated position, at which time the mesh guardrail 2 is continuously extended from the internal cavity of the first column 1, thereby protecting the construction site;

[0032] Specifically, the winding mechanism includes a winding shaft 4 located in the cavity of the first column 1, the bottom end of the winding shaft 4 is rotatably connected to the inner bottom wall of the cavity of the first column 1, and the mesh guardrail 2 is wound around the outside of the winding shaft 4. When the mesh guardrail 2 is pulled outward by the second column 14, the winding shaft 4 will rotate as the mesh guardrail 2 is pulled out. When the construction is completed and the mesh guardrail 2 is retracted, it is only necessary to rotate the winding shaft 4 in the opposite direction to store the mesh guardrail 2 outside the winding shaft 4.

[0033] Reference Figure 3 , further explain the winding shaft 4, the top of the winding shaft 4 is installed with a connecting shaft 5, the top of the first column 1 is installed with a top plate 6 for sealing the internal cavity of the first column 1, the connecting shaft 5 is rotatably connected to the inner bottom wall of the top plate 6, and the top of the first column 1 is sealed by the top plate 6, so as to ensure that the storage components inside the cavity are not corroded by rainwater, and the outside of the connecting shaft 5 is wound with a reset spring 7, the top of the reset spring 7 is fixedly connected to the top plate 6, and the bottom of the reset spring 7 is fixedly connected to the top of the winding shaft 4. By installing the reset spring 7 above the winding shaft 4, an increasing resistance is provided to the rotation of the winding shaft 4. The specific process is as follows:

[0034] When the mesh guardrail 2 between the first column 1 and the second column 14 is impacted, the mesh guardrail 2 wound on the outside of the winding shaft 4 is subjected to a pulling force, causing the winding shaft 4 to continue to rotate. At this time, the rotating winding shaft 4 drives the reset spring 7 to rotate, thereby squeezing the reset spring 7 so that the reset spring 7 generates an elastic force acting on the winding shaft 4, which is equivalent to the winding shaft 4 being subjected to an increasingly greater resistance, and the surface is on the mesh guardrail 2, which is equivalent to the mesh guardrail 2 facing an increasingly greater resistance to move outward, thereby playing a buffering role, further protecting the construction site.

[0035] Reference Figure 3-6The reset spring 7 in this embodiment is specifically described. The top end of the reset spring 7 is connected to the upper end 8, and the bottom end of the reset spring 7 is rotatably connected to the lower end ring block 9. The upper end 8, the lower end ring block 9 and the reset spring 7 are integrally cast. The lower end ring block 9 is provided at the position of the inner top wall of the top plate 6 corresponding to the upper end 8. The upper end 8 is inserted into the lower end ring block 9 and fixed. Two annular plates are distributed inside and outside the top of the winding shaft 4 with the same center. The two annular plates form a limiting groove 10 for facilitating the sliding of the lower end ring block 9. The lower end ring block 9 is located inside the limiting groove 10, and a corrugated fixing groove 11 with a wavy array distributed around the connecting shaft 5 as the center is provided inside the limiting groove 10. A fixing hole 12 is provided through the surface of the lower end ring block 9, and a fixing pin 13 is installed inside the fixing hole 12. The outer diameter of the fixing pin 13 is equal to the inner diameter of the fixing hole 12, and the inner wall diameter of the corrugated fixing groove 11 is equal to the outer diameter of the fixing pin 13. Friction lines are provided on the inner wall of the corrugated fixing groove 11 and the outer wall of the fixing pin 13;

[0036] The installation process is as follows: first, install the winding shaft 4 inside the first column 1, then install two annular plates on the top wall of the winding shaft 4 to form a limit groove 10, and install the reset spring 7 on the outside of the connecting shaft 5, place the lower end ring block 9 at the bottom into the limit groove 10, rotate the limit groove 10 so that the fixing hole 12 on the limit groove 10 is aligned with the corrugated fixing groove 11, and insert the fixing pin 13 into the fixing hole 12 and extend it into the corrugated fixing groove 11, so as to adjust the position of the lower end ring block 9. Fix. Note that, due to the size, after the fixing pin 13 is inserted into the fixing hole 12 and the corrugated fixing groove 11, its position is difficult to move. After the position of the lower end ring block 9 is fixed, the top plate 6 is further installed above the first column 1, and the lower end ring block 9 of the bottom wall of the top plate 6 is aligned with the upper end 8 of the reset spring 7. Then, the top plate 6 is pressed down, so that the upper end 8 of the reset spring 7 is inserted into the lower end ring block 9 of the bottom wall of the top plate 6, thereby fixing the top end of the upper end 8, so as to achieve the fixation of the reset spring 7;

[0037] The working process is as follows: when the mesh guardrail 2 is impacted, that is, when the winding shaft 4 rotates, the limit groove 10 rotates together, and because the bottom end of the lower end ring block 9 is fixed to the position of the limit groove 10, the lower end ring block 9 will rotate together, causing the spring to deform and generate elastic force. The elastic force hinders the continued rotation of the winding shaft 4, and the elastic force gradually increases, making it more and more difficult to rotate the winding shaft 4, thereby playing a buffering effect. When the impact force is large to a certain extent, the reset spring 7 cannot completely absorb the force of the rotation of the limit groove 10. At this time, the force received by the reset spring 7 is greater than the friction force of the fixed pin 13 inside the corrugated fixed groove 11, so that the winding shaft 4 continues to rotate. At this time, the reset spring 7 is also rotating, further evenly distributing the impact force received by the mesh guardrail 2 to the rotation of the winding shaft 4 and the deformation of the reset spring 7 for absorption.

[0038] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A guardrail for construction, comprising a first column (1) and a second column (14) adjacent to each other, characterized in that: A mesh guardrail (2) of variable length is provided between the first column (1) and the second column (14); a side wall of the first column (1) close to the second column (14) is provided with an inlet and outlet (3) for facilitating the mesh guardrail (2) to pass through; the interior of the first column (1) is configured as a cavity, and a retracting mechanism for retracting the mesh guardrail (2) is installed in the cavity; one end of the retracted mesh guardrail (2) is wound around the retracting mechanism, and the other end of the retracted mesh guardrail (2) is fixedly connected to the side wall of the second column (14); The retracting mechanism comprises a retracting shaft (4) located in the cavity of the first column (1), the bottom end of the retracting shaft (4) being rotatably connected to the inner bottom wall of the cavity of the first column (1), and the mesh guardrail (2) is wound around the outside of the retracting shaft (4); A connecting shaft (5) is installed at the top end of the reeling shaft (4), a top plate (6) is installed above the first column (1) to seal the internal cavity of the first column (1), and the connecting shaft (5) is rotatably connected to the inner bottom wall of the top plate (6); A return spring (7) is installed and wound around the outside of the connecting shaft (5), the top end of the return spring (7) is fixedly connected to the top plate (6), and the bottom end of the return spring (7) is fixedly connected to the top end of the winding shaft (4).

2. A construction guardrail according to claim 1, characterized in that: The top end of the return spring (7) is connected to the upper end (8), the upper end (8) and the return spring (7) are cast in one piece, and a lower end ring block (9) is provided at a position of the inner top wall of the top plate (6) corresponding to the upper end (8), and the upper end (8) is inserted into the lower end ring block (9).

3. A construction guardrail according to claim 1, characterized in that: The bottom end of the return spring (7) is rotatably connected to the lower end ring block (9), and two annular plates are cocentrically distributed inside and outside the top end of the winding shaft (4), and the two annular plates form a limiting groove (10) for facilitating the sliding of the lower end ring block (9), and the lower end ring block (9) is located inside the limiting groove (10).

4. A construction protection fence according to claim 3, characterized in that: The interior of the limiting groove (10) is provided with a wave-shaped corrugated fixing groove (11) distributed in a circumferential array with the connecting shaft (5) as the center, and a fixing hole (12) is formed through the surface of the lower end ring block (9), and a fixing pin (13) is installed inside the fixing hole (12).

5. A construction guardrail according to claim 4, characterized in that: The outer diameter of the fixing pin (13) is set equal to the inner diameter of the fixing hole (12), the inner wall diameter of the corrugated fixing groove (11) is set equal to the outer diameter of the fixing pin (13), and the inner side wall of the corrugated fixing groove (11) and the outer side wall of the fixing pin (13) are provided with friction lines.

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