Prefabricated concrete stair protective fence stand column fixing clamp

Abstract

The utility model discloses a prefabricated concrete stair protective fence stand column fixing clamp which comprises a detachable fixing clamp body arranged on the free side of a prefabricated concrete stair. The fixing clamp comprises an L-shaped fixing piece, an angle steel clamping piece fixedly connected with the L-shaped fixing piece and arranged at the joint of the tread and the kicking face of the prefabricated concrete stair, and a bottom connecting cushion piece fixedly connected with the angle steel clamping piece and used for installing the bottom of the protective fence stand column. The L-shaped fixing piece comprises an L-shaped steel plate and a high-strength bolt jackscrew which is arranged in the L-shaped steel plate in a penetrating mode and tightly abuts against the bottom of the prefabricated concrete stair, and the L-shaped steel plate is fixedly connected with the angle steel clamping piece. The bottom connecting cushion piece comprises a cushion layer square pipe and a connecting bottom plate arranged on the top of the cushion layer square pipe, and the connecting bottom plate is connected with a stand column bottom plate at the bottom of the protective fence stand column through a connecting bolt. The device is simple in structure, solves the problem of fixed installation of the bottom of the protective fence stand column, does not damage the surface of the prefabricated stair, can be recycled, and is convenient and fast to install.

Description

Technical Field

[0001] The utility model belongs to the technical field of fixing guardrail posts, in particular to a fixing fixture for prefabricated concrete stair guardrail posts. Background Art

[0002] With the development of the national prefabricated construction industry and the increasing demand for assembly rates in various regions, precast concrete reinforced staircases are widely used in modern buildings. For stairwell protection, current projects generally use steel pipes, which are time-consuming and labor-intensive to install, lack aesthetic appeal, and are not suitable for reusable use. If standardized retractable protective fencing is used, since precast concrete reinforced staircases are prefabricated and do not require secondary tiling, expansion bolts cannot be fixed to the tread surface, which would damage the finished staircase surface and require secondary repairs, increasing construction costs.

[0003] Therefore, there is an urgent need for a prefabricated staircase guardrail column fixing fixture with a simple structure and reasonable design to solve the problem of fixing and installing the bottom of the guardrail column without damaging the surface of the prefabricated stairs, which can be used cyclically and is easy and quick to install. Utility Model Content

[0004] The technical problem to be solved by the present invention is to provide a prefabricated concrete staircase guardrail column fixing clamp to address the deficiencies in the above-mentioned prior art. The clamp has a simple structure and a reasonable design, solves the problem of fixing and installing the bottom of the guardrail column, does not damage the surface of the prefabricated stairs, can be used cyclically, and is easy and quick to install.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: a fixing fixture for the posts of the protective fence of precast concrete staircases, characterized in that it includes a detachable fixing fixture provided on the air-facing side of the precast concrete staircase, the fixing fixture including an L-shaped fixing piece provided on the air-facing side of the precast concrete staircase, an angle steel clip fixedly connected to the L-shaped fixing piece and provided at the connection between the tread and the riser of the precast concrete staircase, and a bottom connecting pad fixedly connected to the angle steel clip and provided for the bottom of the protective fence post to be installed;

[0006] The L-shaped fixing member includes an L-shaped steel plate and a high-strength bolt screw passing through the L-shaped steel plate and tightly abutting the bottom of the precast concrete staircase, and the L-shaped steel plate is fixedly connected to the angle steel clamp;

[0007] The bottom connecting pad includes a cushion square tube connected to the angle steel clip and a connecting base plate arranged on the top of the cushion square tube. The bottom of the protective fence column is provided with a column base plate, and the connecting base plate and the column base plate are connected by connecting bolts.

[0008] The above-mentioned precast concrete staircase guardrail column fixing clamp is characterized in that: the L-shaped steel plate includes a vertical steel plate that fits the air-facing side of the precast concrete staircase and a bottom steel plate that is vertically connected to the vertical steel plate and is located at the bottom of the precast concrete staircase, and the high-strength bolt top screw is passed through the bottom steel plate.

[0009] The above-mentioned precast concrete staircase guardrail column fixing fixture is characterized in that: there are multiple high-strength bolt top screws, and the multiple high-strength bolt top screws are arranged along the length direction of the bottom steel plate, and an expansion plate is provided at the end of the high-strength bolt top screw close to the bottom of the precast concrete staircase.

[0010] The above-mentioned precast concrete staircase guardrail column fixing fixture is characterized in that a bottom nut is provided at the bottom of the bottom steel plate, and the high-strength bolt top screw passes through the bottom nut and the bottom steel plate.

[0011] The above-mentioned precast concrete staircase guardrail column fixing fixture is characterized in that the outer side walls of the vertical steel plate and the bottom steel plate are provided with L-shaped reinforcement ribs.

[0012] The above-mentioned precast concrete staircase guardrail column fixing fixture is characterized in that: the angle steel clip includes a lower horizontal plate that fits the precast concrete stair tread and a vertical plate that is integrally formed with the lower horizontal plate and arranged vertically and fits the precast concrete stair riser, and the inner side surface of the vertical steel plate is fixedly connected to the end surface of the lower horizontal plate and the vertical plate close to the air side;

[0013] The cushion layer square tube is fixed on the lower horizontal plate and extends out of the lower horizontal plate.

[0014] The above-mentioned precast concrete staircase guardrail column fixing clamp is characterized in that the connecting base plate and the column base plate have the same structure, and the width of the connecting base plate is greater than the width of the cushion square tube, and the cushion square tube extends out of the connecting base plate in the length direction.

[0015] Compared with the prior art, the present invention has the following advantages:

[0016] 1. The utility model has a simple structure and a reasonable design. The clamp is mounted on the precast concrete stairs so that the protective fence posts are installed on the precast concrete stairs. It is easy to operate and can be used cyclically.

[0017] 2. The utility model is provided with L-shaped steel plates and angle steel clips so that the angle steel clips can fit the treads and risers of the precast concrete stairs and the L-shaped steel plates can fit the air-facing side of the precast concrete stairs, thereby realizing the limited installation of the clamp and ensuring that it is installed in place.

[0018] 3. The utility model is provided with a high-strength bolt top screw so that the end of the high-strength bolt top screw can be screwed to abut the bottom of the precast concrete stairs under the limitation of the L-shaped steel plate and the angle steel clamp, thereby realizing the fixed installation of the clamp; in addition, by adjusting the length of the high-strength bolt top screw passing through the bottom steel plate, it can adapt to the installation of precast concrete stairs of different thicknesses, thereby improving the adaptability; secondly, by locking the high-strength bolt top screw, the clamp can be disassembled and used in a turnover manner, and the installation is convenient and quick.

[0019] 4. The utility model is provided with a cushion layer square tube to facilitate the installation of a connecting base plate with the same structure as the column base plate. In this way, there is a gap between the connecting base plate and the precast concrete stair tread, which facilitates the connection bolts between the connecting base plate and the column base plate to fix the bottom of the protective fence column and will not damage the surface of the precast staircase.

[0020] In summary, the utility model has a simple structure and a reasonable design, solves the problem of fixing and installing the bottom of the protective fence column, does not damage the surface of the prefabricated stairs, can be used cyclically, and is easy and quick to install.

[0021] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the usage structure of the utility model.

[0023] Figure 2 This is a structural diagram of the fixing fixture of the utility model.

[0024] Description of the accompanying drawings:

[0025] 1—L-shaped steel plate; 1-1—vertical steel plate; 1-2—bottom steel plate;

[0026] 2—L-shaped reinforcement rib; 3—high-strength bolt top screw; 3-1—expansion plate;

[0027] 4—Angle steel clip; 4-1—Vertical plate; 4-2—Lower horizontal plate;

[0028] 5—cushion square tube; 6—connecting base plate; 7—column base plate;

[0029] 8—Connecting bolts; 9—Protective fence posts; 10—Precast concrete stairs. DETAILED DESCRIPTION

[0030] like Figures 1 to 2A precast concrete staircase guardrail column fixing fixture shown includes a detachable fixing fixture provided on the airside of a precast concrete staircase 10, the fixing fixture comprising an L-shaped fixing member provided on the airside of the precast concrete staircase 10, an angle steel clip 4 fixedly connected to the L-shaped fixing member and provided at the junction of the tread and riser of the precast concrete staircase 10, and a bottom connecting pad fixedly connected to the angle steel clip 4 and provided for mounting the bottom of the guardrail column 9;

[0031] The L-shaped fixing member includes an L-shaped steel plate 1 and a high-strength bolt top screw 3 that is inserted into the L-shaped steel plate 1 and tightly abuts against the bottom of the precast concrete staircase 10. The L-shaped steel plate 1 is fixedly connected to the angle steel clamp 4.

[0032] The bottom connecting pad includes a cushion square tube 5 connected to the angle steel clip 4 and a connecting base plate 6 arranged on the top of the cushion square tube 5. A column base plate 7 is arranged at the bottom of the protective fence column 9. The connecting base plate 6 and the column base plate 7 are connected by connecting bolts 8.

[0033] In this embodiment, the L-shaped steel plate 1 includes a vertical steel plate 1-1 attached to the air-facing side of the precast concrete staircase 10 and a bottom steel plate 1-2 vertically connected to the vertical steel plate 1-1 and located at the bottom of the precast concrete staircase 10, and the high-strength bolt top wire 3 is passed through the bottom steel plate 1-2.

[0034] In this embodiment, there are multiple high-strength bolt top screws 3, and the multiple high-strength bolt top screws 3 are arranged along the length direction of the bottom steel plate 1-2. An expansion plate 3-1 is provided at the end of the high-strength bolt top screw 3 near the bottom of the precast concrete staircase 10.

[0035] In this embodiment, a bottom nut is provided at the bottom of the bottom steel plate 1 - 2 , and the high-strength bolt top wire 3 passes through the bottom nut and the bottom steel plate 1 - 2 .

[0036] In this embodiment, L-shaped reinforcement ribs 2 are provided on the outer side walls of the vertical steel plate 1 - 1 and the bottom steel plate 1 - 2 .

[0037] In this embodiment, the angle steel clip 4 includes a lower horizontal plate 4-2 that fits the tread of the precast concrete staircase 10 and a vertical plate 4-1 that is integrally formed with the lower horizontal plate 4-2 and arranged vertically and fits the riser of the precast concrete staircase 10. The inner side surface of the vertical steel plate 1-1 is fixedly connected to the end surface of the lower horizontal plate 4-2 and the vertical plate 4-1 close to the air side;

[0038] The cushion layer square tube 5 is fixed on the lower horizontal plate 4 - 2 and extends out of the lower horizontal plate 4 - 2 .

[0039] In this embodiment, the connecting base plate 6 and the column base plate 7 have the same structure, and the width of the connecting base plate 6 is greater than the width of the cushion square tube 5 , and the cushion square tube 5 extends out of the connecting base plate 6 in the length direction.

[0040] In this embodiment, during implementation, the inner side surface of the vertical steel plate 1-1 is welded to the end surface of the lower horizontal plate 4-2 and the vertical plate 4-1 close to the air side, thereby achieving a fixed connection between the L-shaped steel plate 1 and the angle steel clip 4 to form a whole, thereby improving safety in use.

[0041] In this embodiment, a high-strength bolt top screw 3 is provided. On the one hand, the purpose is to screw the high-strength bolt top screw 3 so that the end of the high-strength bolt top screw 3 abuts against the bottom of the precast concrete stair 10, thereby achieving fixed installation of the clamp; on the other hand, the purpose is to adjust the length of the high-strength bolt top screw 3 passing through the bottom steel plate 1-2, thereby adapting to the installation of precast concrete stairs 10 of different thicknesses, thereby improving adaptability; in addition, by locking the high-strength bolt top screw 3, the clamp can be disassembled and used in a turnover manner, and the installation is convenient and quick.

[0042] In this embodiment, during implementation, a rubber plate may be provided on the expansion plate 3 - 1 to increase friction, thereby improving the fixing effect.

[0043] In this embodiment, the expansion plate 3 - 1 is provided to increase the contact area with the bottom of the precast concrete staircase 10 , thereby improving the fixing stability.

[0044] In this embodiment, an L-shaped steel plate 1 is provided, on the one hand, to be fixedly connected with the angle steel clip 4 as a whole, and on the other hand, to facilitate the insertion of the high-strength bolt top screw 3, thereby improving the compactness of the structure. The vertical steel plate 1-1 of the L-shaped steel plate 1 fits the air-facing side of the precast concrete staircase 10, thereby realizing the limitation of the L-shaped steel plate 1, thereby facilitating the operation of tightening the high-strength bolt top screw 3.

[0045] In this embodiment, the angle steel clip 4 is provided. On the one hand, it is to make the lower horizontal plate 4-2 fit the tread of the precast concrete stair 10, and the vertical plate 4-1 fit the riser of the precast concrete stair 10, so as to realize the limited installation of the angle steel clip 4. Under the joint action of the angle steel clip 4 and the vertical steel plate 1-1, it is ensured that the high-strength bolt top screw 3 is easy to operate and tighten; on the other hand, it is to fix the cushion square tube 5 on the lower horizontal plate 4-2, providing an installation foundation for the cushion square tube 5.

[0046] In this embodiment, the cushion square tube 5 is provided to facilitate the installation of the connecting base plate 6 having the same structure as the column base plate 7. In this way, there is a gap between the connecting base plate 6 and the tread of the precast concrete staircase 10, which facilitates the connection bolts 8 between the connecting base plate 6 and the column base plate 7 to fix the bottom of the protective fence column without damaging the surface of the precast staircase.

[0047] In this embodiment, it should be noted that the figure does not show the telescopic properties of the fence posts 9. In practice, because it is a telescopic protective fence, the fence posts 9 can be telescopically adjusted.

[0048] When the utility model is used specifically, when the precast concrete staircase protective fence column fixing clamp is installed on the precast concrete staircase 10, the high-strength bolt top screw 3 is first screwed, and the clamp is clamped into the precast concrete staircase 10 near the step end of the stairwell, and the lower horizontal plate 4-2 in the angle steel clamp 4 is adjusted to fit the tread of the precast concrete staircase 10, the vertical plate 4-1 fits the riser surface of the precast concrete staircase 10, and the vertical steel plate 1-1 in the L-shaped steel plate 1 fits the air-facing side of the precast concrete staircase 10;

[0049] Then tighten the high-strength bolt jack screw 3 until the expansion plate 3-1 is tightly pressed against the bottom of the precast concrete staircase 10 to ensure that it does not move;

[0050] Then connect the column base plate 7 at the bottom of the protective fence column 9 with the column base plate 7 through the connecting bolts 8. After the installation is completed, adjust the length of the retractable fence column 9 according to the actual size.

[0051] In summary, the utility model has a simple structure and a reasonable design, solves the problem of fixing and installing the bottom of the protective fence column, does not damage the surface of the prefabricated stairs, can be used cyclically, and is easy and quick to install.

[0052] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any way. Any simple modification, change and equivalent structural change made to the above embodiment based on the technical essence of the present invention shall still fall within the scope of protection of the technical solution of the present invention.

Claims

1. A precast concrete staircase guardrail column fixing fixture, characterized by: It comprises a detachable fixing fixture provided on the air-facing side of a precast concrete staircase (10), the fixing fixture comprising an L-shaped fixing piece provided on the air-facing side of the precast concrete staircase (10), an angle steel clamp (4) fixedly connected to the L-shaped fixing piece and provided at the connection between the tread and the riser of the precast concrete staircase (10), and a bottom connection pad fixedly connected to the angle steel clamp (4) and provided for mounting the bottom of a protective fence post (9); The L-shaped fixing member comprises an L-shaped steel plate (1) and a high-strength bolt top screw (3) passing through the L-shaped steel plate (1) and tightly abutting against the bottom of the precast concrete staircase (10); the L-shaped steel plate (1) and the angle steel clamp (4) are fixedly connected; The bottom connection pad comprises a cushion layer square tube (5) connected to the angle steel clamp (4) and a connection base plate (6) arranged on the top of the cushion layer square tube (5); a column base plate (7) is arranged at the bottom of the protective fence column (9); and the connection base plate (6) and the column base plate (7) are connected by connecting bolts (8).

2. A precast concrete staircase guardrail column fixing fixture according to claim 1, characterized in that: The L-shaped steel plate (1) comprises a vertical steel plate (1-1) fitted to the air-facing side of the precast concrete staircase (10) and a bottom steel plate (1-2) vertically connected to the vertical steel plate (1-1) and located at the bottom of the precast concrete staircase (10), wherein the high-strength bolt top screw (3) is passed through the bottom steel plate (1-2).

3. A precast concrete staircase guardrail column fixing fixture according to claim 2, characterized in that: There are multiple high-strength bolt top screws (3), and the multiple high-strength bolt top screws (3) are arranged along the length direction of the bottom steel plate (1-2). An expansion plate (3-1) is provided at the end of the high-strength bolt top screw (3) close to the bottom of the precast concrete staircase (10).

4. A precast concrete staircase guardrail column fixing fixture according to claim 2, characterized in that: A bottom nut is provided at the bottom of the bottom steel plate (1-2), and the high-strength bolt top wire (3) passes through the bottom nut and the bottom steel plate (1-2).

5. A precast concrete staircase guardrail column fixing fixture according to claim 2, characterized in that: The outer side walls of the vertical steel plate (1-1) and the bottom steel plate (1-2) are provided with L-shaped reinforcing ribs (2).

6. A precast concrete staircase guardrail column fixing fixture according to claim 2, characterized in that: The angle steel clip (4) comprises a lower horizontal plate (4-2) fitted to the tread of the precast concrete staircase (10) and a vertical plate (4-1) integrally formed with the lower horizontal plate (4-2), arranged vertically and fitted to the riser of the precast concrete staircase (10); the inner side surface of the vertical steel plate (1-1) is fixedly connected to the end surfaces of the lower horizontal plate (4-2) and the vertical plate (4-1) close to the air side; The cushion layer square tube (5) is fixed on the lower horizontal plate (4-2) and extends out of the lower horizontal plate (4-2).

7. A precast concrete staircase guardrail column fixing fixture according to claim 1, characterized in that: The connecting base plate (6) and the column base plate (7) have the same structure, and the width of the connecting base plate (6) is greater than the width of the cushion layer square tube (5), and the cushion layer square tube (5) extends out of the connecting base plate (6) in the length direction.

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