Adjustable high-precision positioning device for prefabricated stair board

Abstract

The utility model discloses an adjustable high-precision positioning device for a prefabricated stair board, which belongs to the technical field of prefabricated stairs and is used for adjusting the position relation between the PC stair board and a stair beam and the position relation between the PC stair board and a shelving lifting lug on the stair beam when the PC stair board is installed, and a rest platform is arranged on one side, far away from the shelving lifting lug, of the stair beam. The device comprises a plurality of positioning assemblies which are arranged at the tops of the shelving lifting lugs and used for accurately controlling the elevation and flatness of the top face of the PC stair board, and the positioning assemblies are all connected with the bottom of the top end of the PC stair board. According to the utility model, the problems of superelevation of the plate surface and inclination of the stair plate surface caused by the traditional installation of the PC stair plate by arranging a cushion block can be effectively avoided, the PC stair plate can be installed in place at one time, the precision is good, and the social benefit is obvious.

Description

Technical Field

[0001] The utility model belongs to the technical field of prefabricated stairs, and in particular relates to an adjustable high-precision positioning device for prefabricated stair slabs. Background Art

[0002] At present, prefabricated buildings are being vigorously promoted in China. Due to the immature installation technology and the limited technical level of construction personnel, the quality of PC finished products is uneven. In particular, the installation problems of PC stairs are mainly concentrated on the quality control of PC board installation. Usually, the installation of PC stair panels is to control the installation elevation and flatness of the PC stair panels by placing concrete pads in the ear parts of the ladder beams in advance. This method is not operational for fine-tuning the elevation and inclination during the installation of the PC panels. The thickness of the pads cannot completely eliminate the errors in the construction of cast-in-place ear parts. It is very likely that the PC stair panel will be installed too high, affecting the later decoration surface construction. The poor installation flatness directly leads to the tilt of the panel surface, which not only affects the apparent quality of the building, but also affects the use of the entire PC stair panel. The PC stair panel needs to be re-adjusted, resulting in unnecessary rework.

[0003] Therefore, there is an urgent need for an adjustable high-precision positioning device for prefabricated stair slabs to ensure that the PC staircase is installed without tilting. Utility Model Content

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A prefabricated stair tread adjustable high-precision positioning device is used to adjust the positional relationship between the PC stair tread, the ladder beam and the mounting lugs on the ladder beam when installing the PC stair tread, and a rest platform is provided on the side of the ladder beam away from the mounting lug; the device includes a plurality of positioning components arranged on the top of the mounting lug for accurately controlling the elevation and flatness of the top surface of the PC stair tread, and the positioning components are all connected to the top and bottom of the PC stair tread.

[0006] Furthermore, a plurality of the positioning components are relatively arranged on both sides of the placement ear.

[0007] Furthermore, the positioning assembly includes an inner thread sleeve and an adjusting screw matching the inner thread sleeve; a plurality of grooves are relatively opened on both sides of the mounting ear; the inner thread sleeve is fixedly installed in the groove; the adjusting screw is inserted into the inner thread sleeve and is threadedly connected to the inner thread sleeve.

[0008] Furthermore, the positioning assembly also includes an adjusting member for adjusting and verifying the elevation of the adjusting screw and the horizontality of the adjusting screws arranged opposite to each other on both sides.

[0009] Furthermore, the adjusting member includes a level and a tower ruler for checking the elevation of the adjusting screw rod and a level ruler for adjusting the horizontality of the two adjusting screw rods arranged opposite to each other.

[0010] Beneficial effects of the utility model:

[0011] 1. The utility model improves the qualified rate of PC stair slab installation, reduces the possibility of rework and adjustment of PC stair slabs in the later stage, eliminates the economic investment of rework due to adjustment of elevation and flatness of PC stair slabs in the later stage, and manually adjusts the height of the screw rod in advance before installing the PC stair slab to control the overall elevation and flatness of the stair slab installation, which has good economic benefits.

[0012] 2. The utility model can effectively eliminate the problems of over-height and tilt of the staircase surface caused by the traditional method of installing PC staircase panels by setting pads, so that the PC staircase panels can be installed in place at one time with good precision, and the social benefits are obvious. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of an adjustable high-precision positioning device for prefabricated stair slabs of the utility model;

[0014] Figure 2 This is a disassembly diagram of an adjustable high-precision positioning device for prefabricated stair slabs of the utility model;

[0015] Figure 3 It is the elevation control review diagram of the utility model;

[0016] Figure 4 This is the level adjustment diagram of the utility model;

[0017] In the figure: 1. PC stair board; 2. Rest platform; 3. Ladder beam; 4. Shelving lug; 5. Adjusting screw; 6. Internal thread sleeve; 7. Tower ruler; 8. Level; 9. Level ruler. DETAILED DESCRIPTION

[0018] It should be noted that, in the absence of conflict, the embodiments in the present application and the features in the embodiments may be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0019] Example 1

[0020] refer to Figures 1 to 4 , used to adjust the positional relationship between the PC stair slab 1, the ladder beam 3 and the mounting lug 4 on the ladder beam 3 when installing the PC stair slab 1, and a rest platform 2 is provided on the side of the ladder beam 3 away from the mounting lug 4; the device includes a plurality of positioning components arranged on the top of the mounting lug 4 for accurately controlling the top surface elevation and flatness of the PC stair slab 1, and the positioning components are all connected to the top and bottom of the PC stair slab 1.

[0021] In this embodiment, the PC stair treads include various stair types such as double-run PC stairs and scissor-type PC stairs.

[0022] In this embodiment, a plurality of positioning components are relatively disposed on two sides of the placement ear 4 .

[0023] In this embodiment, the positioning assembly includes an inner thread sleeve 6 and an adjusting screw 5 matching the inner thread sleeve 6; a plurality of grooves are relatively opened on both sides of the placement ear 4; the inner thread sleeve 6 is fixedly installed in the groove; the adjusting screw 5 is inserted into the inner thread sleeve 6 and is threadedly connected to the inner thread sleeve 6.

[0024] Preferably, when casting the mounting ears 4 of the ladder beam 3, the inner thread sleeve 6 needs to be fixedly installed at the symmetrical positions on both sides to ensure that the position of the inner thread sleeve is firmly fixed to prevent the inner thread sleeve from tilting and shifting during the concrete pouring process. After confirmation, the mounting ears 4 are cast.

[0025] In this embodiment, the positioning assembly further includes an adjusting member for adjusting and verifying the elevation of the adjusting screw 5 and the horizontality of the adjusting screws 5 arranged opposite to each other on both sides.

[0026] In this embodiment, the adjusting member includes a level 8 and a tower ruler 7 for checking the elevation of the adjusting screw rod 5 , and a level ruler 9 for adjusting the horizontality of two adjusting screw rods 5 arranged opposite to each other.

[0027] Working principle:

[0028] S1. After the concrete strength of the shelving lug 4 reaches the required level, an adjusting screw 5 matching the inner thread sleeve 6 is inserted into the inner thread sleeve 6, and the screw elevation is adjusted by rotating the adjusting screw 5;

[0029] S2. Use the level 8 and the tower ruler 7 to cooperate with each other to check the height of the adjusting screw 5 at both ends to prevent the PC stair slab 1 from being too high.

[0030] S3. After the review is completed, use a level ruler 9 to check whether the connecting line of the adjusting screws 5 arranged opposite to each other on both sides away from the inner thread sleeve 6 is on a horizontal plane to prevent the PC stair slab 1 from tilting during installation.

[0031] S4. After the positioning of the adjusting screw 5 is completed, the adjusting screw 5 is connected and fixed to the outer opening of the inner thread sleeve 6 by spot welding to prevent disturbance during the construction process.

[0032] S5. Install the PC stair slab 1 so that the top and bottom of the PC stair slab 1 are installed at the end of the adjusting screw 5 away from the inner thread sleeve 6. After the installation is completed, grout the installation seam formed between the PC stair slab 1 and the mounting ear 4. After the grouting is completed, the installation and fixing work of the PC stair slab 1 is completed.

[0033] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. For those skilled in the art, the utility model may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model are included in the protection scope of the utility model.

Claims

1. An adjustable high-precision positioning device for prefabricated stair treads, used to adjust the positional relationship between the PC stair treads, the ladder beams, and the resting ears on the ladder beams when installing the PC stair treads, wherein a resting platform is provided on the side of the ladder beams away from the resting ears, characterized in that: The device comprises a plurality of positioning components arranged on the top of the mounting ears for accurately controlling the elevation and flatness of the top surface of the PC staircase board, and the positioning components are all connected to the top and bottom of the PC staircase board.

2. The adjustable high-precision positioning device for prefabricated stair slabs according to claim 1 is characterized in that: A plurality of positioning components are relatively arranged on two sides of the placement ears.

3. The adjustable high-precision positioning device for prefabricated stair slabs according to claim 1 is characterized in that: The positioning assembly includes an inner thread sleeve and an adjusting screw matching the inner thread sleeve; a plurality of grooves are relatively opened on both sides of the placement ear; the inner thread sleeve is fixedly installed in the groove; the adjusting screw is inserted into the inner thread sleeve and is threadedly connected with the inner thread sleeve.

4. The adjustable high-precision positioning device for prefabricated stair slabs according to claim 3 is characterized in that: The positioning assembly also includes an adjusting member for checking the elevation of the adjusting screw and the horizontality of the adjusting screws arranged opposite to each other on both sides.

5. The adjustable high-precision positioning device for prefabricated stair slabs according to claim 4 is characterized in that: The adjusting member comprises a level and a tower ruler for checking the elevation of the adjusting screw rod and a level ruler for adjusting the horizontality of two adjusting screw rods arranged opposite to each other.

Images