Adjustable pin key fixing device for prefabricated stairs

Abstract

The utility model relates to the technical field of constructional engineering, in particular to a prefabricated stair adjustable pin key fixing device which comprises a support, a sliding groove and a reserved pin key. The support is of a long-strip-shaped plate-shaped structure, and a sliding groove with the overall long-strip-shaped appearance is formed in the support. The reserved pin key is slidably installed in the sliding groove in an inserted connection mode and fixed through the fixing nut. The two ends of the support are fixed through a first fixing support and a second fixing support, and the support is fixed to the first fixing support and the second fixing support through connecting bolts. By improving the adjustable pin key fixing device of the prefabricated stair, the adjustable pin key fixing device has the advantages that the structural design is reasonable, the front, back, left and right positions of the reserved pin key can be adjusted through sliding, accurate adjustment is achieved, installation flexibility is high, and installation operation is convenient, and therefore the problems and defects in the prior art and equipment are effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of construction engineering, and more specifically, to an adjustable pin key fixing device for precast stairs. Background Technique

[0002] A precast stair is a type of stair that is prefabricated in a factory and then transported to the construction site for installation. Precast stairs have been widely used in modern buildings due to their advantages such as fast construction speed, controllable quality, and little on-site pollution.

[0003] During construction, it is necessary to set reserved pin keys on the building main body. When installing the precast stairs, the reserved holes at both ends of the precast stairs need to be inserted into the reserved pin keys to achieve the installation and positioning of the precast stairs. The existing installation and fixing methods of the reserved pin keys are too cumbersome, time-consuming and laborious, and are inconvenient to adjust during construction, with poor adjustment accuracy.

[0004] In view of this, research and improvement are carried out on the existing problems, and an adjustable pin key fixing device for precast stairs is provided, aiming to solve the problems and improve the practical value through this technology. Content of the Utility Model

[0005] The purpose of the utility model is to provide an adjustable pin key fixing device for precast stairs to solve the problems and deficiencies mentioned in the above background technique.

[0006] To achieve the above purpose, the utility model provides an adjustable pin key fixing device for precast stairs, which is achieved by the following specific technical means:

[0007] The adjustable pin key fixing device for precast stairs includes: a bracket, a chute, a reserved pin key, a fixing nut, a first fixing bracket, a second fixing bracket, and a connecting bolt; the bracket is a long strip-shaped plate structure, and a chute with an overall long strip-shaped appearance is opened on the bracket; the reserved pin key is slidably installed in the chute by plugging, and the reserved pin key is fixed by the fixing nut; both ends of the bracket are fixed by the first fixing bracket and the second fixing bracket, and the bracket is fixed to the first fixing bracket and the second fixing bracket by the connecting bolt.

[0008] As a further optimization of this technical solution, the top of the bracket of the adjustable pin key fixing device for precast stairs of the utility model is provided with a scale line, and the scale line is located at the edge of one side of the chute.

[0009] As a further optimization of this technical solution, one end of the bracket of the adjustable pin key fixing device for precast stairs of the utility model is provided with a round hole for installing the connecting bolt, and the connecting bolt at one end of the bracket is plugged and installed in the round hole, and the connecting bolt at the other end is plugged and installed in the chute.

[0010] As a further optimization of the technical solution, in the adjustable pin key fixing device for precast stairs of the present utility model, the first fixing bracket includes a side bracket installed at the end of the bracket through a connecting bolt. The cross-section of the side bracket is in an inverted "U" shape, and a mounting plate is fixedly arranged at the bottom of the side bracket.

[0011] As a further optimization of the technical solution, in the adjustable pin key fixing device for precast stairs of the present utility model, a chute and a scale line with an overall long strip shape are provided at the top of the side bracket. The scale line is located at the edge of one side of the chute, and the connecting bolt is installed in the chute.

[0012] As a further optimization of the technical solution, in the adjustable pin key fixing device for precast stairs of the present utility model, the second fixing bracket includes a connecting plate installed at the end of the bracket through a connecting bolt. The connecting plate is in a long strip plate structure, and a chute is provided at the middle position of the connecting plate. The connecting bolt is installed in the chute; a mounting plate is fixedly arranged on the outer wall of one side of the connecting plate.

[0013] As a further optimization of the technical solution, in the adjustable pin key fixing device for precast stairs of the present utility model, the mounting plate is in a long strip plate structure. The mounting plate includes a connecting portion at its middle position, installation portions are arranged at both ends of the connecting portion, and round holes for installing self-tapping screws are provided on the installation portions.

[0014] Due to the application of the above technical solution, the present utility model has the following advantages compared with the prior art:

[0015] 1. The bracket of the present utility model is in a long strip plate structure, and a chute with an overall long strip shape is provided on the bracket. A scale line is provided at the top of the bracket, and the scale line is located at the edge of one side of the chute. A chute and a scale line with an overall long strip shape are provided at the top of the side bracket, and the scale line is located at the edge of one side of the chute. The connecting bolt is installed in the chute. By sliding, the front, back, left, and right positions of the reserved pin key can be adjusted, with strong flexibility. The scale line at the edge of the chute serves as a reference, which can improve the accuracy during adjustment and achieve precise adjustment.

[0016] 2. Both ends of the bracket of the present utility model are fixed through the first fixing bracket and the second fixing bracket, and the bracket is fixed to the first fixing bracket and the second fixing bracket through connecting bolts. Through the first fixing bracket and the second fixing bracket, both ends of the bracket can be respectively installed on the ladder beam templates at different heights, with strong installation flexibility and convenient installation operation.

[0017] 3. By improving the adjustable pin key fixing device for precast stairs, the utility model has the advantages of reasonable structural design. The front, rear, left and right positions of the reserved pin key can be adjusted by sliding, achieving precise adjustment, strong installation flexibility and convenient installation operation, thus effectively solving the problems and deficiencies in the prior art and equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings constituting a part of this application are used to provide a further understanding of the utility model. The schematic embodiments and descriptions thereof of the utility model are used to explain the utility model and do not constitute an improper limitation to the utility model. In the drawings:

[0019] Figure 1 is a schematic structural diagram of the utility model;

[0020] Figure 2 is a schematic structural diagram of the first fixing bracket of the utility model;

[0021] Figure 3 is a schematic structural diagram of the second fixing bracket of the utility model;

[0022] Figure 4 is a schematic structural diagram of the mounting plate of the utility model.

[0023] In the figure: bracket 1, chute 2, reserved pin key 3, fixing nut 4, first fixing bracket 5, second fixing bracket 6, connecting bolt 7, side bracket 8, connecting plate 9, mounting plate 10, connecting part 10.1, mounting part 10.2. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] Next, the technical solutions in the embodiments of the utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all of the embodiments.

[0025] Please refer to Figures 1 to 4 , the utility model provides a specific technical implementation solution for an adjustable pin key fixing device for precast stairs:

[0026] The adjustable pin key fixing device for precast stairs includes: bracket 1, chute 2, reserved pin key 3, fixing nut 4, first fixing bracket 5, second fixing bracket 6, connecting bolt 7; the bracket 1 is a long strip-shaped plate structure, and a chute 2 with an overall long strip-shaped appearance is opened on the bracket 1. A scale line is opened at the top of the bracket 1, and this scale line is located at the edge of one side of the chute 2. The reserved pin key 3 is slidably installed in the chute 2 by plugging, and the reserved pin key 3 is fixed by the fixing nut 4. The front and rear positions of the reserved pin key 3 can be adjusted by sliding, and the scale line at the edge of the chute 2 serves as a reference to achieve precise adjustment.

[0027] Both ends of the support 1 are fixed by the first fixing bracket 5 and the second fixing bracket 6. The support 1 is fixed to the first fixing bracket 5 and the second fixing bracket 6 by connecting bolts 7. A round hole for installing the connecting bolt 7 is provided at one end of the support 1, and the connecting bolt 7 at one end of the support 1 is inserted and installed in the round hole, and the connecting bolt 7 at the other end is inserted and installed in the chute 2. The two ends of the support 1 can be respectively installed on the ladder beam formworks at different heights through the first fixing bracket 5 and the second fixing bracket 6, with strong installation flexibility and convenient installation operation.

[0028] The first fixing bracket 5 includes a side bracket 8 installed at the end of the support 1 through a connecting bolt 7. The cross-section of the side bracket 8 is in an inverted "U" shape, and an installation plate 10 is fixedly arranged at the bottom of the side bracket 8. A chute 2 and a scale line with an overall strip-shaped appearance are provided at the top of the side bracket 8, and the scale line is located at the edge of one side of the chute 2. The connecting bolt 7 is installed in the chute 2. The left and right positions of the reserved pin key 3 can be adjusted by sliding, with strong flexibility. The scale line at the edge of the chute 2 also serves as a reference, achieving precise adjustment.

[0029] The second fixing bracket 6 includes a connecting plate 9 installed at the end of the support 1 through a connecting bolt 7. The connecting plate 9 is in a long strip-shaped plate structure, and a chute 2 is provided at the middle position of the connecting plate 9. The connecting bolt 7 is installed in the chute 2, also realizing the sliding adjustment of the support 1.

[0030] An installation plate 10 is fixedly arranged on the outer wall of one side of the connecting plate 9. The installation plate 10 is in a long strip-shaped plate structure, and the installation plate 10 includes a connecting portion 10.1 at its middle position, and installation portions 10.2 are provided at both ends of the connecting portion 10.1. Round holes for installing self-tapping screws are provided on the installation portions 10.2, and it is fixed to the ladder beam formwork by using extended self-tapping screws, which is convenient for operation.

[0031] Specific implementation steps:

[0032] Fix both ends of the support 1 to the ladder beam formwork through the first fixing bracket 5 and the second fixing bracket 6. Loosen the fixing nut 4, and the reserved pin key 3 can slide along the chute 2 on the support 1, thereby adjusting the front and back positions of the reserved pin key 3. Loosen the connecting bolts 7 at both ends of the support 1, and the support 1 can slide along the chute 2 on the first fixing bracket 5 and the second fixing bracket 6, thereby adjusting the left and right positions of the reserved pin key 3. And a scale line serving as a reference is provided at the edge of the chute 2, achieving precise adjustment.

[0033] In summary, for the adjustable pin key fixing device of the precast staircase, the bracket is a long strip plate-like structure, and a chute with an overall long strip appearance is provided on the bracket. A scale line is provided at the top of the bracket, and this scale line is located at the edge of one side of the chute. The top of the side bracket is provided with a chute and a scale line with an overall long strip appearance, and this scale line is located at the edge of one side of the chute. And the connecting bolt is installed in the chute. By sliding, the front, back, left, and right positions of the reserved pin key can be adjusted, with strong flexibility. The scale line at the edge of the chute serves as a reference, which can improve the accuracy during adjustment and achieve precise adjustment. The two ends of the bracket are fixed through the first fixing bracket and the second fixing bracket, and the bracket is fixed to the first fixing bracket and the second fixing bracket through the connecting bolt. Through the first fixing bracket and the second fixing bracket, the two ends of the bracket can be respectively installed on the beam formworks at different heights, with strong installation flexibility and convenient installation operation. Through the improvement of the adjustable pin key fixing device of the precast staircase, it has the advantages of reasonable structural design, the ability to adjust the front, back, left, and right positions of the reserved pin key by sliding, achieving precise adjustment, strong installation flexibility, and convenient installation operation, thus effectively solving the problems and deficiencies in the prior art and equipment.

[0034] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. Prefabricated staircase adjustable pin key fixing device, including: A bracket (1), a slide groove (2), a reserved pin key (3), a fixing nut (4), a first fixing bracket (5), a second fixing bracket (6), and a connecting bolt (7); characterized in that: the bracket (1) is a long strip plate-like structure, and the bracket (1) is provided with a slide groove (2) with an overall long strip appearance; the reserved pin key (3) is slidably installed in the slide groove (2) by plugging, and the reserved pin key (3) is fixed by a fixing nut (4); the two ends of the bracket (1) are fixed by a first fixing bracket (5) and a second fixing bracket (6), and the bracket (1) is fixed to the first fixing bracket (5) and the second fixing bracket (6) by connecting bolts (7).

2. The adjustable pin key fixing device for prefabricated stairs according to claim 1, characterized in that: A scale line is provided on the top of the bracket (1), and the scale line is located at the edge of one side of the slide groove (2).

3. The adjustable pin key fixing device for prefabricated stairs according to claim 1, characterized in that: A circular hole for installing a connecting bolt (7) is provided at one end of the bracket (1), and the connecting bolt (7) at one end of the bracket (1) is inserted and installed in the circular hole, and the connecting bolt (7) at the other end of the bracket (1) is inserted and installed in the slide groove (2).

4. The adjustable pin key fixing device for prefabricated stairs according to claim 1, characterized in that: The first fixed bracket (5) comprises a side bracket (8) mounted on the end of the bracket (1) via a connecting bolt (7), the cross section of the side bracket (8) being in an inverted "U" shape, and a mounting plate (10) being fixedly provided at the bottom of the side bracket (8).

5. The adjustable pin key fixing device for prefabricated stairs according to claim 4, characterized in that: The top of the side bracket (8) is provided with a slide groove (2) and a scale line which is in the shape of an elongated strip as a whole, and the scale line is located at the edge of one side of the slide groove (2), and the connecting bolt (7) is installed in the slide groove (2).

6. The adjustable pin key fixing device for prefabricated stairs according to claim 1, characterized in that: The second fixed bracket (6) comprises a connecting plate (9) mounted on the end of the bracket (1) via connecting bolts (7), wherein the connecting plate (9) is a long strip-shaped plate-like structure, and a slide groove (2) is provided in the middle of the connecting plate (9), and the connecting bolts (7) are installed in the slide groove (2); a mounting plate (10) is fixedly provided on the outer wall of one side of the connecting plate (9).

7. The adjustable pin key fixing device for prefabricated stairs according to claim 4 or 6, characterized in that: The mounting plate (10) is a long strip-shaped plate-like structure, and the mounting plate (10) comprises a connecting portion (10.1) located in the middle thereof, and mounting portions (10.2) are provided at both ends of the connecting portion (10.1), and circular holes for installing self-tapping screws are provided on the mounting portions (10.2).

Images