Mounting and positioning device for embedded bolts of assembly type prefabricated staircase

Abstract

An assembly type prefabricated stair embedded bolt mounting and positioning device comprises a fixing part, the fixing part comprises a base, a positioning hole is formed in the surface of the base, the base is connected with a bolt head, and the bolt head is in threaded connection with a bolt body; the bolt head is welded on the bottom plate, so that the contact area with concrete is increased, and the problems that a traditional embedded part is directly welded on a steel bar, connection is not firm, and dislocation is caused in the pouring process are solved; the positioning component comprises a positioning plate, a sliding groove is formed in the surface of the positioning plate, the sliding groove is located in the center line of the positioning plate, the sliding groove penetrates through the positioning plate, and the sliding groove is matched with a sliding block; the positioning device is used for assisting in positioning, the mounting positions of the prefabricated parts are basically the same, the positioning device is used for avoiding repeated positioning during mounting of each embedded part, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of assembled structure engineering, and specifically relates to an embedded bolt installation and positioning device for assembled prefabricated stairs. Background Art

[0002] Prefabricated construction involves transferring much of the on-site work involved in traditional construction methods to a factory. Components and accessories (such as floor slabs, wall panels, stairs, and balconies) are fabricated in the factory, transported to the construction site, and assembled and installed on-site using reliable connections. A crucial aspect of prefabricated component installation is the accurate pre-embedding of connectors during cast-in-place construction. During construction, these pre-embedded connectors are typically welded to the rebar, often using spot welding, which lacks impact resistance. During subsequent pouring, the impact of the pouring process can cause these components to become dislodged or shift position, complicating concrete installation. If these components become misaligned, the conventional solution is to cut out the misaligned bolts, re-drill and re-install the rebar, and secure the precast concrete components. This can result in insufficient post-embedded rebar connections, or even if the pre-embedded bolts are slightly misaligned but do not meet installation requirements, causing the rebar holes to overlap with the pre-embedded bolts after cutting, making it impossible to drill and re-install the rebar.

[0003] After searching, the utility model with publication number CN220978821U provides a pre-embedded bolt positioning device, which includes a first positioning plate and a second positioning plate parallel to the first positioning plate, the first positioning plate is detachably connected to the outside of the template, the bolt passes through the template and is detachably connected to the first positioning plate, and the second positioning plate is detachably connected to the end of the bolt away from the template; a seal is provided between the template and the first positioning plate, and the bolt is fixed by the template. The misalignment of the template will cause all the embedded bolts on a template to be misaligned. At the same time, there are many nuts, and the installation is more cumbersome. Summary of the Invention

[0004] A prefabricated prefabricated staircase embedded bolt installation and positioning device includes a fixing component, the fixing component includes a base, a positioning hole is opened on the surface of the base, the base is connected to a bolt head, and the bolt head is threadedly connected to the bolt body; the bolt head is welded to the base plate to increase the contact area with the concrete, avoiding the problem of traditional embedded parts being directly welded to the steel bars with an unstable connection and misalignment during the pouring process.

[0005] It also includes a positioning component, which includes a positioning plate, a sliding groove is opened on the surface of the positioning plate, the sliding groove is located at the center line of the positioning plate, the sliding groove passes through the positioning plate, and the sliding groove is equipped with a slider; a positioning device is used to assist in positioning, and the installation positions of the prefabricated parts are basically the same. The use of the positioning device avoids the need for repeated positioning for each embedded part installation, thereby improving work efficiency.

[0006] Furthermore, the positioning holes are opened along the diagonal lines of the base, and the positioning holes are equipped with fixing pieces. The fixing holes are opened diagonally, and a suitable fixing position can be selected as needed. Furthermore, for further fixing, multiple fixing pieces can be installed on one fixing hole.

[0007] Furthermore, the fixings are steel nails, and the base is a 4mm*100mm*100mm iron plate base. The choice of fixings is not limited to one type, and commonly used nails, bolts, etc. can be used. The specific selection should be based on the different fixing locations. The base plate is a metal base plate, which is convenient for construction and can be processed using the most common iron plates on the construction site, reducing costs and manufacturing difficulty. The size of the base is not unique and should be selected according to specific needs. The base iron plate should not be too thin or too small. If it is too thin, the finished product will not be firmly welded when the bolt cap is subsequently welded. If the iron plate is too small, it will be unstable. The fixing hole for the iron nail should not be too large, so that the iron nail cap does not pass through the hole, nor should it be too small, which will increase the construction difficulty.

[0008] Furthermore, the bolt body is a post-assembly type bolt; selecting a post-assembly type bolt provides insurance against later dislocation or breakage.

[0009] Furthermore, a bubble level is installed on the surface of the positioning plate, and handles are installed at both ends of the positioning plate; the bubble level helps construction workers to see the horizontality of the installation position more intuitively, avoiding the installation position being uneven, which may cause misalignment of the subsequent casting of embedded parts. The setting of the handles helps workers to more conveniently position, calibrate and move the device.

[0010] Furthermore, the surface of the positioning plate is engraved with scales to help staff judge the distance and facilitate use.

[0011] Furthermore, the handle is provided with anti-slip grooves to prevent it from slipping out of the hand.

[0012] Furthermore, a through hole is provided in the center of the slider, and the bolt body passes through the through hole. The cross section of the slider is in the shape of an "I". A gasket is provided at the junction of the slider and the positioning plate, and the gasket is a rubber gasket. The inner surface of the through hole is smooth, which is convenient for movement along the bolt body during subsequent verification. The gasket is provided to fix the movement of the slider and facilitate positioning.

[0013] The installation method of the device comprises the following steps:

[0014] S1. Welding: Weld the bolt head to the center of the base;

[0015] S2. Positioning: Install the bolt body on the bolt head, pass the bolt body through the slider, push the slider to move in the slide according to the construction requirements, and determine the distance between the bolt bodies according to the scale engraved on the surface of the positioning block. After the determination is completed, install the nut on the bolt body, hold the positioning plate with your hand, rotate the nut downward and tighten it. During the process of pressing the nut downward, the rubber gasket between the slider and the positioning plate is squeezed, and the friction between the slider and the positioning plate becomes greater, fixing the position of the slider on the positioning plate. After fixing, place the device on a horizontal ground and observe whether the device is level. If not, adjust the nut position according to the deflection of the bubble level.

[0016] S3. Installation: Place the device in the pre-embedded position. Before placement, level the ground to ensure that the ground is level. During the placement process, use the bubble level on the positioning plate to determine whether it is level. After it is level, use steel nails to pass through the positioning holes on the base to fix the embedded parts;

[0017] S4. Verification: Remove the nut and release the fixation of the slider. The construction worker holds the handle with both hands and moves it up and down along the bolt body. Observe the bubble level on the positioning plate to feel whether the movement is smooth and check whether the installation position of the embedded part is offset. If offset is found, pull out the fixing part and reinstall it. At the same time, check whether the ground is flat again. After confirming that the ground is level, reinstall and verify.

[0018] S5. Casting: After verification, install the formwork, install the top formwork, and drill holes in the formwork according to the positions of the embedded parts. The holes should be large enough to fit the bolt heads. The holes should not be too large. Then reinforce the formwork. After the reinforced formwork is completed, open holes for concrete pouring and pour concrete. Pass the bolts exposed in the concrete and install nuts to secure the formwork. This completes the installation of one embedded part. Repeat steps S1-S5 until all embedded parts are installed.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] The bolt head is threadedly connected to the bolt body; the bolt head is welded to the base plate to increase the contact area with the concrete, avoiding the problem of traditional embedded parts being directly welded to the steel bars and having an unstable connection, and the problem of misalignment during the pouring process. At the same time, a slide groove is provided on the surface of the positioning plate, and the slide groove is located at the center line of the positioning plate. The slide groove passes through the positioning plate, and the slide groove is equipped with a slider. A through hole is provided in the center of the slider, and the through hole is equipped with a bolt body. The embedded parts are driven to move by the movement of the slider on the positioning plate, and the positioning device is used to help positioning. The installation positions of the prefabricated parts are basically the same. The use of the positioning device avoids the need for repeated positioning for each installation of the embedded parts, thereby improving work efficiency.

[0021] After the installation is completed, the positioning device also has a verification function. After the installation is completed, the nut is removed to release the fixation of the slider. The construction worker holds the handle with both hands and moves up and down along the bolt body, observes the bubble level on the positioning plate, and feels whether the movement is smooth, and further verifies the installation position of the embedded parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0023] Figure 1 This is a schematic diagram A of the installation and positioning device for embedded bolts of prefabricated stairs;

[0024] Figure 2 It is a schematic diagram of fixed components;

[0025] Figure 3 It is a top view of the base structure;

[0026] Figure 4 This is the schematic diagram B of the installation and positioning device for embedded bolts of prefabricated stairs;

[0027] Figure 5 2. It is a schematic diagram of the cross-sectional structure of the positioning plate;

[0028] Figure 6 Schematic diagram C of the installation and positioning device for embedded bolts of prefabricated stairs;

[0029] Figure 7 This is a schematic diagram of embedded parts installation.

[0030] In the figure: 1. Base, 2. Bolt body, 3. Bolt head, 4. Positioning hole, 5. Nut, 6. Template, 7. Positioning plate, 8. Bubble level, 9. Slider, 10. Slide, 11. Handle, 12. Concrete, 13. Gasket. DETAILED DESCRIPTION

[0031] Example 1

[0032] like Figure 1-7 As shown, a prefabricated prefabricated staircase embedded bolt installation and positioning device is characterized in that it includes a fixing component, the fixing component includes a base 1, a positioning hole 4 is opened on the surface of the base 1, the base 1 is connected to a bolt head 3, the bolt head 3 is threadedly connected to the bolt body 2, and the bolt head 3 is welded to the center position of the base 1.

[0033] It also includes a positioning component, which includes a positioning plate 7. A slide groove 10 is provided on the surface of the positioning plate 7. The slide groove 10 is located at the center line of the positioning plate 7. The slide groove 10 passes through the positioning plate 7. The slide groove 10 is equipped with a slider 9. The slider 9 moves along the slide groove 10. A through hole is provided in the center of the slider 9. The bolt body 2 passes through the through hole. When the slider 9 moves along the slide groove 10, it drives the bolt body 2 to move together. The cross section of the slider 9 is in the shape of an "I". A gasket 13 is provided at the junction of the slider 9 and the positioning plate 7. The gasket 13 is a rubber gasket.

[0034] The positioning hole 4 is opened along the diagonal line of the base 1 , and the positioning hole 4 is matched with a fixing piece.

[0035] The fixing parts are steel nails, and suitable fixing parts are selected according to the specific construction conditions. The base 1 is a 4mm*100mm*100mm iron plate base. There is no fixed selection for the base size and material, and they are selected according to the specific construction conditions. The bolt body 2 is a post-assembly bolt.

[0036] A bubble level 8 is installed on the surface of the positioning plate 7. Handles 11 are installed at both ends of the positioning plate 7. The bubble level 8 is used to determine whether the device is level, and further determine whether the placement position is level to avoid misalignment.

[0037] The surface of the positioning plate 7 is engraved with scales, and the slider 9 drives the bolt body 2 to move on the slide groove 10. The distance between the embedded parts is judged in conjunction with the scales, which facilitates installation.

[0038] The handle 11 is provided with anti-slip grooves.

[0039] Example 2

[0040] like Figure 1-7 As shown, an installation method includes the following steps:

[0041] S1. Welding: Weld the bolt head 3 to the center of the base 1;

[0042] S2. Positioning: Install the bolt body 2 on the bolt head 3, pass the bolt body 2 through the slider 9, push the slider 9 to move in the slide groove 10 according to the construction requirements, and determine the distance between the bolt bodies 2 according to the scale engraved on the surface of the positioning block. After the determination is completed, install the nut 5 on the bolt body 2, hold the positioning plate 7 with your hand, rotate the nut 5 downward and tighten it. During the process of pressing the nut 5 downward, the rubber gasket 13 between the slider 9 and the positioning plate 7 is squeezed, and the friction between the slider 9 and the positioning plate 7 becomes larger, fixing the position of the slider 9 on the positioning plate 7. After fixing, place the device on a horizontal ground and observe whether the device is level. If it is not level, adjust the position of the nut 5 according to the deflection of the bubble level 8.

[0043] S3. Installation: Place the device in the pre-embedded position. Level the ground before placement. During the placement process, use the bubble level 8 on the positioning plate 7 to determine whether it is level. After it is level, use steel nails to pass through the positioning holes 4 on the base 1 to fix the embedded parts.

[0044] S4. Verification: Remove the nut 5 and release the fixation of the slider 9. The construction worker holds the handle 11 with both hands and moves it up and down along the bolt body 2. Observe the bubble level 8 on the positioning plate 7 to feel whether the movement is smooth. Check whether the installation position of the embedded part is offset. If it is offset, pull out the fixing part and reinstall it. Check the ground level again before installation. Install after confirming that it is level.

[0045] S5, pouring: After verification, the template 6 is installed, holes are opened on the template 6 according to the positions of the embedded parts, the template 6 passes through the bolt body 2 exposed in the concrete 12, and the nuts 5 and the sealing ring are installed to fix the template 6. The template 6 is then reinforced. After the reinforcement of the template 6 is completed, a concrete pouring hole is opened, and concrete 12 is poured to complete the installation of one embedded part. Repeat steps S1 to S5 until all embedded parts are installed.

[0046] Example 3

[0047] Based on Example 2, the fixing component can be installed separately without using the positioning component, including the following steps:

[0048] S1. Welding: Weld the bolt head 3 to the center of the base 1;

[0049] S2. Installation: Install the beam bottom formwork. After the beam bottom formwork is installed, fix the welded parts on the formwork 6 according to the design requirements.

[0050] S3. Connection: After the welded parts are fixed on the formwork 6, the position is checked. After completion, the steel bars are tied normally. After the steel bars are tied, the bolt body 2 is installed on the bolt head 3 and must be installed and tightened;

[0051] S4. Pouring: After tightening, the template 6 is installed, the position of the embedded bolts is measured on the template 6, and holes are punched on the template 6. The hole opening is required to be able to pass through the bolt body 2 and not too large. Then the template 6 is reinforced. After the reinforcement of the template 6 is completed, the concrete pouring hole is opened and concrete is poured to complete the installation.

Claims

1. A prefabricated staircase embedded bolt installation and positioning device, characterized by: The fixing component comprises a base (1), a positioning hole (4) is provided on the surface of the base (1), the base (1) is connected to a bolt head (3), and the bolt head (3) is threadedly connected to a bolt body (2); The invention also includes a positioning component, which includes a positioning plate (7). A sliding groove (10) is provided on the surface of the positioning plate (7). The sliding groove (10) is located at the center line of the positioning plate (7). The sliding groove (10) passes through the positioning plate (7). The sliding groove (10) is matched with a slider (9).

2. The embedded bolt installation and positioning device for prefabricated stairs according to claim 1, characterized in that: The positioning hole (4) is opened along the diagonal line of the base (1), and the positioning hole (4) is matched with a fixing piece.

3. The embedded bolt installation and positioning device for prefabricated stairs according to claim 2, characterized in that: The fixing piece is a steel nail, and the base (1) is a 4mm*100mm*100mm iron plate base.

4. The embedded bolt installation and positioning device for prefabricated stairs according to claim 1, characterized in that: The bolt body (2) is a post-assembly type bolt.

5. The embedded bolt installation and positioning device for prefabricated stairs according to claim 1 is characterized in that: A bubble level (8) is installed on the surface of the positioning plate (7), and handles (11) are installed at both ends of the positioning plate (7).

6. The embedded bolt installation and positioning device for prefabricated stairs according to claim 5, characterized in that: The surface of the positioning plate (7) is engraved with scales.

7. The embedded bolt installation and positioning device for prefabricated stairs according to claim 5, characterized in that: The handle (11) is provided with anti-slip grooves.

8. The embedded bolt installation and positioning device for prefabricated stairs according to claim 1, characterized in that: A through hole is provided at the center of the slider (9), and the bolt body (2) passes through the through hole. The cross section of the slider (9) is in the shape of an "I" character, and a gasket (13) is provided at the junction of the slider (9) and the positioning plate (7).

9. The embedded bolt installation and positioning device for prefabricated stairs according to claim 8, characterized in that: The gasket is a rubber gasket.

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