Stair embedded bolt positioning device

Abstract

A stair embedded bolt positioning device comprises a supporting plate used for being fixedly connected with a fixed platform. The rotating shaft is used for being fixed to a sleeve reserved on the supporting plate, two rotating arms are sequentially hinged to the upper portion of the rotating shaft, and the rotating arms are orthogonal to the rotating shaft; a sliding support used for linearly sliding along the rotary arm is assembled on the rotary arm in a sliding mode. The clamping sleeve is fixedly connected to the sliding support and comprises a sleeve body, a plurality of rotary steel balls are arranged on the inner wall of the sleeve body in a rolling and embedded mode, and clamping spaces used for clamping the embedded bolts are reserved between the rotary steel balls; in the using process, integration is high, multiple parts do not need to be combined and matched, and the scheme is easy and convenient to use and low in labor intensity.

Description

Technical Field

[0001] The utility model belongs to the field of construction, and thus provides a positioning device for embedded bolts of stairs. Background Art

[0002] In the modern construction industry, precast floor slabs are widely used due to their advantages such as fast construction speed, controllable quality, and little environmental impact. During the production process of precast floor slabs, the implantation of bolts is a key step to ensure structural connection and stability. In actual operation, bolts are easily impacted during the concrete pouring process, resulting in the deviation of their positions, thus affecting the overall quality of the floor slab and the convenience of subsequent installation.

[0003] In the prior art, it is usually necessary to embed positioning parts in precast floor slabs, such as plastic sleeve positioning parts or metal positioning parts, to ensure the accurate position of bolts in concrete. These parts play a role of fixing and protecting after the bolt installation, preventing the impact on the bolts during concrete pouring. However, this method has an obvious disadvantage that the embedded parts cannot be recycled after use, resulting in waste of resources and increase in cost.

[0004] Secondly, in the prior art, positioning parts need to be used in combination with multiple scattered parts, which is equivalent to the secondary assembly of each part during the positioning and clamping process, with great use difficulty and high labor intensity. Content of the Utility Model

[0005] The purpose of the utility model is to solve the existing products in the prior art. The utility model provides a positioning device for embedded bolts of stairs.

[0006] The technical solution provided is as follows:

[0007] A positioning device for embedded bolts of stairs is provided, including

[0008] a support plate for fixedly connecting with a fixed platform;

[0009] a rotating shaft for fixing with a sleeve reserved on the support plate. Two rotating arms are successively hinged on the upper part of the rotating shaft, and the rotating arms are orthogonal to the rotating shaft;

[0010] a sliding support for linearly sliding along the rotating arm is slidably fitted on the rotating arm;

[0011] a clamping sleeve fixedly connected to the sliding support. The clamping sleeve includes a cylinder body, and a plurality of rotating steel balls are rollingly fitted on the inner wall of the cylinder. A clamping space for clamping the embedded bolt is reserved between each rotating steel ball;

[0012] Further, a linear slide rail is hinged to the lower end of the rotary arm. A scale for marking dimensions is arranged axially on the slide rail. A slide seat is equipped on the slide rail, and a laser indicator is fixedly connected to the top of the slide seat.

[0013] Further, the rotary arm is hinged to the rotary shaft through a sleeve, and a stepped platform is formed on the rotary shaft at the connection position between the rotary arm and the rotary shaft.

[0014] Further, the clamping sleeves on the two rotary arms face in opposite directions.

[0015] Further, a plurality of long strip holes are formed in the support plate.

[0016] Further, the clamping sleeve extends vertically, and the rotary steel balls are evenly distributed in a circle in the clamping sleeve.

[0017] The beneficial effects brought by adopting the solution of the present utility model are as follows:

[0018] 1. Through the combined design of the designed rotary arm and the sliding support, scales are engraved on the rotary arm. The clamping sleeve can be quickly moved to the corresponding position through the scales. Its position is easy to adjust during use, and the use difficulty is low.

[0019] 2. Using the support plate as the main support mechanism, it can be fixedly connected to the precast formwork or connected to base mechanisms such as a fixed base and a walking base. Its position is easy to adjust during use. Especially when it is fixed to the precast formwork, it is very convenient for measurement. There is no need to calculate the difference value, and it can be easily measured.

[0020] All the designed clamping sleeves are located above the pouring formwork. After pouring is completed, this mechanism can be directly lifted, and this mechanism can disengage from the bolts, so it can be reused. During use, the integration is strong, there is no need for multiple parts to be combined and matched, and a laser indicator is used to recalculate the position of the embedded bolts. Description of the Drawings

[0021] Figure 1 It is the overall structure diagram of the stair embedded bolt positioning device.

[0022] Figure 2 It is the structure diagram after the combination of the support plate and the rotary shaft.

[0023] Figure 3 It is the schematic structural diagram of the steel balls inside the clamping sleeve. Detailed Implementation Modes

[0024] To enable those skilled in the art to better understand the solution of the present utility model, the following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0025] The following further describes the present utility model based on the attached Figures 1-3 The present utility model is further described as follows:

[0026] As Figure 1 shown, a stair pre-embedded bolt positioning device is provided, which includes a support plate 1 for fixedly connecting with a fixed platform. A plurality of long holes are provided on the support plate 1, through which the position of the support plate 1 can be conveniently adjusted. It also includes a rotary shaft 5 for fixing with a sleeve reserved on the support plate 1. Two rotary arms 2 are sequentially hinged above the rotary shaft 5, and the rotary arms 2 are orthogonal to the rotary shaft 5;

[0027] The specific connection method is that a shaft seat is fixedly connected to the side of the support plate 1, and the rotary shaft 5 is fitted in the shaft seat, and the rotary shaft 5 penetrates through the shaft seat and is arranged in a vertical state.

[0028] A slideway is formed on the rotary arm 2, and through the slideway, a sliding support 3 for linearly sliding along the rotary arm 2 can be slidably fitted;

[0029] On one side of the sliding support 3, a clamping sleeve 4 is fixedly connected through a fixing member, such as by a perforated bolt connection. The clamping sleeve 4 includes a cylinder body, and a plurality of rotary steel balls are rollingly fitted on the inner wall of the cylinder body, and a clamping space for clamping the pre-embedded bolt is reserved between the rotary steel balls;

[0030] To ensure the accurate position of the reserved bolt, a linear slide rail 6 is also hinged at the lower end of the rotary arm 2. The slide rail 6 can freely rotate around the lower end of the rotary arm 2. A scale for marking the size is arranged along the axial direction on the slide rail 6. A slide seat is fitted on the slide rail 6, and a laser indicator 7 is fixedly connected to the top of the slide seat. The laser indicator 7 is a laser emitter. The pre-embedded bolt can be irradiated through the laser indicator 7, and at the same time, the corresponding degree can be seen. Generally, the rotary arm 2 should be flush with the stairs. The position degree of the corresponding bolt can be quickly read through the laser emitter. If the horizontal distance and the vertical distance need to be measured at the same time, a slide rail 6 can be added, for example, the slide rail 6 is set in an L shape, and a laser emitter is arranged on each side wall.

[0031] The described swing arm 2 is hinged to the rotary shaft 5 through a sleeve. A stepped platform is formed on the rotary shaft 5 at the connection position between the swing arm 2 and the rotary shaft 5, which can ensure the stable rotation posture of the swing arm 2.

[0032] To prevent sleeve interference, the clamping sleeves 4 on the two swing arms 2 face in opposite directions. Thus, two embedded bolts can be clamped simultaneously. In this solution, two embedded bolts can meet the requirements. If multiple bolts need to be embedded, the length of the clamping sleeve 4 can be reduced, and multiple swing arms 2 and clamping sleeves 4 with the same structure can be added. The clamping sleeve 4 extends vertically, and the rotary steel balls 4a are evenly distributed in a circle within the clamping sleeve 4. The corresponding bolt can be clamped by the rotary steel balls. The bolt size is a standard size, so the gap between the rotary steel balls can be adapted to the bolt.

[0033] In actual use, by adjusting the position of the clamping sleeve 4 on the slide rail 6 and inserting the embedded bolt into the clamping sleeve 4, the clamping sleeve 4 will ensure that the position of the embedded bolt remains fixed. After inserting the embedded bolt, the position of the laser indicator 7 can be adjusted through the swing arm 2. By reading the degree of the laser indicator 7, the position of the embedded bolt can be known. Compared with the prior art, where the bolt is fixed by measuring with a caliper and using other embedded parts first, this solution is simple and convenient to use. Regarding the position locking problems between the rotary shaft 5 and the swing arm 2, between the swing arm 2 and the sliding support 3, between the slide rail 6 and the rotary shaft 5, and between the slide rail 6 and the slide seat, they can be locked by tightening bolts or by the design of tightening with wing bolts. For example, inserting into the swing arm 2 to tighten the rotary shaft 5, inserting into the sliding support 3 to tighten the swing arm 2, inserting into the slide rail 6 to tighten the rotary shaft 5, and inserting into the slide rail 6 to tighten the slide seat to achieve fastening.

[0034] The above description is only the preferred embodiment of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A staircase embedded bolt positioning device, characterized in that: include, A support plate for fixed connection with a fixed platform; A rotating shaft used to be fixed to the sleeve reserved on the support plate, wherein two rotating arms are hingedly connected in sequence at the upper part of the rotating shaft, and the rotating arms are orthogonal to the rotating shaft; A sliding support is slidably mounted on the swivel arm and is used for sliding linearly along the swivel arm; A clamping sleeve is fixedly connected to the sliding support, and the clamping sleeve comprises a cylinder body, and a plurality of rotating steel balls are rollingly embedded on the inner wall of the cylinder, and a clamping space for clamping the embedded bolts is reserved between each rotating steel ball.

2. A staircase embedded bolt positioning device according to claim 1, characterized in that: The lower end of the swivel arm is hinged with a linear slide rail, a scale for marking size is arranged along the axial direction on the slide rail, a slide seat is arranged on the slide rail, and a laser indicator is fixedly connected to the top of the slide seat.

3. A staircase embedded bolt positioning device according to claim 1, characterized in that: The swivel arm is hinged on the swivel shaft through a sleeve, and a stepped platform is formed on the swivel shaft at the connection position between the swivel arm and the swivel shaft.

4. A staircase embedded bolt positioning device according to claim 1, characterized in that: The clamping sleeves on the two rotating arms face in opposite directions.

5. The embedded bolt positioning device for stairs according to claim 1, characterized in that: The support plate is provided with a plurality of long holes.

6. A staircase embedded bolt positioning device according to claim 1, characterized in that: The clamping sleeve is extended vertically, and the rotating steel balls are evenly distributed in a circle in the clamping sleeve.

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