A prefabricated stair pre-embedded part positioning device

Abstract

This utility model relates to a prefabricated staircase positioning device, belonging to the field of prefabricated staircase production technology. Specifically, it is a positioning device for prefabricated staircase embedded parts, including a mold base plate, a fixing component, a positioning component, and a length adjustment component. This utility model ensures accurate positioning while maintaining mold stability, solving the problems of existing patented positioning plates and outer plates being rigid structures that are difficult to adapt to staircase embedded parts of different specifications, rigid positioning devices that may cause misalignment of embedded parts due to cumulative errors, and the use of a large amount of steel plates and angle steel that significantly increases the cost per unit.

Description

Technical Field

[0001] This utility model relates to the field of prefabricated staircase production technology, and in particular to a positioning device for prefabricated staircase embedded parts. Background Technology

[0002] Precast stairs, also known as precast assembled reinforced concrete stairs, are stairs that are divided into three parts: landing slab, stair beam, and stair section. The stair section is prefabricated in a factory or on the construction site. During construction, the stair section is erected between the cast-in-place stair beam and landing slab. The stair section includes reinforcement, embedded parts, and concrete. The embedded reinforcement mainly consists of embedded lifting nuts for hoisting the stair section.

[0003] A search revealed Chinese patent CN219060953U, which discloses a novel rapid positioning device for prefabricated staircase embedded parts. The device includes a positioning plate and a prefabricated staircase positioned by the positioning plate. A first outer cover plate is fixed to one side of the positioning plate, and a second outer cover plate mates with the first outer cover plate on the other side. A cover plate is provided between the top of the first and second outer cover plates to cover the positioning plate. Reinforcing angle steel is provided at the connection points between the first, second, and cover plates via fasteners. A third outer cover plate is provided between the cover plate and the positioning plate to fix the positioning plate and the cover plate. This invention aligns the positioning holes on the positioning plate with the embedded parts, enabling rapid and accurate positioning of the embedded parts in the prefabricated staircase. This effectively eliminates the need for measuring tools to position the embedded parts, reducing measurement errors and preventing displacement during pouring, thus facilitating subsequent pouring work.

[0004] Based on the above search and existing technology, the findings were as follows:

[0005] The aforementioned patented positioning plate and outer casing are rigid structures, making it difficult to adapt to stair embedded parts of different specifications. Rigid positioning devices may cause misalignment of embedded parts due to cumulative errors, and the use of a large number of steel plates and angle steel significantly increases the cost per unit, thus having certain limitations. Utility Model Content

[0006] To address the aforementioned technical problems, this utility model proposes a positioning device for prefabricated staircase embedded parts, ensuring both construction efficiency and positioning accuracy.

[0007] The technical solution to achieve the purpose of this utility model is: a positioning device for prefabricated stair embedded parts, including a mold base plate, and also including a fixing component, a positioning component and a length adjustment component;

[0008] The fixing component includes support plates disposed on both sides of the surface of the mold base plate, and a fixing bracket is fixedly installed on the top of the support plates;

[0009] The positioning component includes a positioning plate fixedly installed on one side of the support plate, and the surface of the positioning plate is provided with a positioning groove;

[0010] The length adjustment assembly includes a connecting sleeve fitted on the top of the fixed bracket, and a sliding sleeve is fixedly installed on the top of the connecting sleeve.

[0011] Preferably, a limiting plate is fixedly installed on one side of the support plate, sliding frames are fixedly installed on both sides of the limiting plate, an adjusting screw is threaded into the inner bottom of the fixed bracket, and sliding rods are fixedly installed on both sides of the positioning plate.

[0012] Preferably, a Z-shaped clamp is slidably installed inside the sliding frame, a clamping spring is fixedly installed between the sliding frame and the Z-shaped clamp, and a guide rod is fixedly installed on one side of the outer side of the sliding frame.

[0013] Preferably, a handwheel is fixedly installed at one end of the adjusting screw, a pair of sliding sleeves are fixedly installed between the outside of the slide rod and the fixed bracket, and a positioning scale is fixedly installed on the slide rod.

[0014] Preferably, a crossbar is inserted inside the sliding sleeve, and guide grooves are provided on both sides of the crossbar. A limit bolt is threaded on the connecting sleeve, and one end of the limit bolt passes through the sliding sleeve and is threaded with a wing nut.

[0015] Compared with existing technologies, the significant advantages of this invention are:

[0016] Firstly, this utility model uses a crossbar to limit the sliding direction of the sliding sleeve, thereby limiting the sliding direction of the clamping components. In conjunction with the limiting plate abutting against the mold base plate, it ensures that the axes of the two clamping components coincide. By using the clamping components in conjunction with the limiting plate, the mold base plate is clamped, thereby achieving the fixation of the device.

[0017] Secondly, this utility model uses a positioning plate to determine the position of the embedded part, and drives the positioning plate to move by adjusting the rotation of the screw, thereby driving the slide rod to move. The moving distance of the positioning plate is determined by the positioning scale, so as to achieve precise positioning and improve the practicality and flexibility of the device.

[0018] This invention solves the problems of existing patented positioning plates and outer panels being rigid structures, making it difficult to adapt to stair embedded parts of different specifications; rigid positioning devices may cause misalignment of embedded parts due to cumulative errors; and the use of a large number of steel plates and angle steels significantly increases the cost per unit. Attached Figure Description

[0019] The present invention will be further explained below with reference to the accompanying drawings and embodiments:

[0020] Figure 1 This is a three-dimensional structural schematic diagram provided by this utility model;

[0021] Figure 2 This is a schematic diagram of the adjustment component structure provided by this utility model;

[0022] Figure 3 This is a schematic diagram of the fixing component structure provided by this utility model;

[0023] Figure 4 This is a schematic diagram of the positioning component structure provided by this utility model.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1. Mold base plate; 2. Fixing components; 21. Fixing bracket; 22. Support plate; 23. Limiting plate; 24. Z-shaped clamping plate; 25. Sliding frame; 26. Guide rod; 27. Clamping spring; 3. Positioning components; 31. Adjusting screw; 32. Handwheel; 33. Positioning plate; 34. Positioning groove; 35. Sliding rod; 36. Positioning scale; 37. Sliding sleeve; 4. Length adjustment components; 41. Crossbar; 42. Guide groove; 43. Sliding sleeve; 44. Limiting bolt; 45. Wing nut; 46. Connecting sleeve. Detailed Implementation

[0026] The present invention will now be described in detail, and the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present invention.

[0027] This utility model provides an improved positioning device for prefabricated staircase embedded parts. The technical solution of this utility model is as follows:

[0028] like Figures 1-4 As shown, a positioning device for prefabricated staircase embedded parts includes a mold base plate 1, which is made of plywood splicing and is used for the forming of prefabricated stairs. It also includes a fixing component 2, a positioning component 3 and a length adjustment component 4.

[0029] The fixing component 2 includes a support plate 22 disposed on both sides of the surface of the mold base plate 1. A fixing bracket 21 is fixedly installed on the top of the support plate 22. The support plate 22 and the fixing bracket 21 provide the main support force for the crossbar 41.

[0030] The positioning component 3 includes a positioning plate 33 fixedly installed on one side of the support plate 22. The surface of the positioning plate 33 is provided with a positioning groove 34. When the positioning plate 33 moves, it can drive the slide rod 35 to move along the axis of the adjusting screw 31.

[0031] The length adjustment assembly 4 includes a connecting sleeve 46 sleeved on the top of the fixed bracket 21. A sliding sleeve 43 is fixedly installed on the top of the connecting sleeve 46. The shapes of the fixed bracket 21 and the connecting sleeve 46 can prevent relative rotation between them.

[0032] Furthermore, a limiting plate 23 is fixedly installed on one side of the support plate 22, and sliding frames 25 are fixedly installed on both sides of the limiting plate 23. An adjusting screw 31 is threaded on the inner bottom of the fixed bracket 21, and sliding rods 35 are fixedly installed on both sides of the positioning plate 33. When the adjusting screw 31 rotates, it can move along the axial direction, thereby driving the positioning plate 33 to move along the axial direction of the adjusting screw 31.

[0033] As a further embodiment of this utility model, a Z-shaped clamping plate 24 is slidably installed inside the sliding frame 25, and a clamping spring 27 is fixedly installed between the sliding frame 25 and the Z-shaped clamping plate 24. A guide rod 26 is fixedly installed on one side of the outer side of the sliding frame 25. The elastic force of the clamping spring 27 can drive the two Z-shaped clamping plates 24 to approach each other, thereby clamping the mold base plate 1 in the longitudinal direction.

[0034] Furthermore, a handwheel 32 is fixedly installed at one end of the adjusting screw 31, and a pair of sliding sleeves 37 are fixedly installed between the outside of the slide rod 35 and the fixed bracket 21. A positioning scale 36 is fixedly installed on the slide rod 35. The scale line of the positioning scale 36 is on the same straight line as the geometric center of the positioning groove 34. By observing the degree of the positioning scale 36 that coincides with the outer side of the fixed bracket 21, the distance from the center of the positioning groove 34 to the side of the mold base plate 1 can be determined, thus achieving precise positioning.

[0035] Furthermore, a crossbar 41 is inserted into the inside of the sliding sleeve 43. Guide grooves 42 are provided on both sides of the crossbar 41. A limit bolt 44 is threaded on the connecting sleeve 46. One end of the limit bolt 44 passes through the sliding sleeve 43 and is threaded with a wing nut 45. The wing nut 45 and the limit bolt 44 cooperate to fix the sliding sleeve 43 and the crossbar 41 by using friction.

[0036] The specific working method is as follows: When using this equipment, loosen the wing nut 45, slide the sliding sleeve 43 to the end of the crossbar 41, use the Z-shaped clamping plate 24 to clamp the mold base plate 1 in the longitudinal direction, and ensure that the support plate 22 abuts against the top surface of the clamping mold base plate 1. Push the support plate 22 and the limiting plate 23 towards the center of the clamping mold base plate 1 until the limiting plate 23 abuts against the side of the mold base plate 1. At this time, the two limiting plates 23 are parallel and the axis of the support plate 22 coincides. Tighten the wing nut 45 to restrict the sliding sleeve 43 from sliding. Use the fixing component 2 to clamp the mold base plate 1. According to the width of the mold base plate 1, determine the distance between the position where the embedded part needs to be placed and the mold base plate 1. Use the handwheel 32 to drive the adjusting screw 31 to rotate, and control the movement of the positioning plate 33 and the sliding rod 35. According to the position where the embedded part needs to be placed, adjust the positioning scale 36 to coincide with the outer side of the fixing bracket 21. Place the embedded part on the mold base plate 1 at the center of the positioning groove 34 to complete the positioning of the embedded part.

[0037] The technical means disclosed in this utility model are not limited to those described above, but also include technical solutions composed of equivalent substitutions of the above technical features. Matters not covered in this utility model are common knowledge to those skilled in the art.

Claims

1. A positioning device for prefabricated staircase embedded parts, comprising a mold base plate (1), characterized in that: Also includes; The fixing component (2) includes a support plate (22) disposed on both sides of the surface of the mold base plate (1), and a fixing bracket (21) is fixedly installed on the top of the support plate (22); The positioning component (3) includes a positioning plate (33) fixedly installed on one side of the support plate (22), and the surface of the positioning plate (33) is provided with a positioning groove (34); The length adjustment assembly (4) includes a connecting sleeve (46) sleeved on the top of the fixed bracket (21), and a sliding sleeve (43) is fixedly installed on the top of the connecting sleeve (46).

2. The positioning device for prefabricated staircase embedded parts according to claim 1, characterized in that: A limiting plate (23) is fixedly installed on one side of the support plate (22), and sliding frames (25) are fixedly installed on both sides of the limiting plate (23). An adjusting screw (31) is threaded on the inner bottom of the fixed bracket (21), and sliding rods (35) are fixedly installed on both sides of the positioning plate (33).

3. The positioning device for prefabricated staircase embedded parts according to claim 2, characterized in that: A Z-shaped clamping plate (24) is slidably installed inside the sliding frame (25), and a clamping spring (27) is fixedly installed between the sliding frame (25) and the Z-shaped clamping plate (24). A guide rod (26) is fixedly installed on one side of the outside of the sliding frame (25).

4. The positioning device for prefabricated staircase embedded parts according to claim 2, characterized in that: A handwheel (32) is fixedly installed at one end of the adjusting screw (31), and a pair of sliding sleeves (37) are fixedly installed between the outside of the slide rod (35) and the fixed bracket (21). A positioning scale (36) is fixedly installed on the slide rod (35).

5. A positioning device for prefabricated staircase embedded parts according to claim 1, characterized in that: A crossbar (41) is inserted inside the sliding sleeve (43). Guide grooves (42) are provided on both sides of the crossbar (41). A limit bolt (44) is threaded on the connecting sleeve (46). One end of the limit bolt (44) passes through the sliding sleeve (43) and is threaded with a wing nut (45).

Images