Three-limb grid embedded steel bar positioning device

Abstract

The utility model relates to the technical field of tunnel construction, in particular to a three-limb grid embedded steel bar positioning device which comprises positioning frames, telescopic connecting rods and supporting columns, the two sets of positioning frames are placed in the vertical direction, each positioning frame comprises three sets of installation blocks, one side of each installation block is provided with an installation arc groove used for installing a limiting ring, and the supporting columns are connected with the telescopic connecting rods. The three groups of mounting blocks are positioned along triangles, the adjacent mounting blocks are fixedly connected through the movable connecting rods, the three groups of telescopic connecting rods are used for connecting the two groups of movable connecting rods, the telescopic connecting rods stretch out and draw back to adjust the distance between the two groups of positioning frames, and the three groups of supporting columns are mounted at the lower ends of the movable connecting rods of the bottom positioning frame. According to the three-limb grille mounting device, the mounting requirements of three-limb grilles of different specifications are actually met by adjusting the distances between the three groups of mounting blocks in the positioning frames, and the applicability of the three-limb grille mounting device is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel construction, in particular to a three-limb grid pre-embedded steel bar positioning device. Background Art

[0002] When constructing the second lining of the tunnel in plain concrete, three-legged grilles should be installed in the concrete according to the design to strengthen the rigidity of the plain concrete. When the three-legged grilles are under construction, auxiliary positioning devices are often required to assist in their positioning to avoid positioning deviation of the steel bars inside the three-legged grilles during installation.

[0003] When the existing three-leg grille embedded steel bar positioning device is used, it is often necessary to be individually welded and customized according to the specifications of the three-leg grille. Its application range is small, and several groups of different specifications need to be customized in actual use. Utility Model Content

[0004] The utility model aims to provide a three-leg grille pre-embedded steel bar positioning device, which is used to solve the problem that the existing three-leg grille pre-embedded steel bar positioning device often needs to be individually welded and customized according to the specifications of the three-leg grille when in use, and its application range is small, and several groups of different specifications need to be customized in actual use.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a three-leg grid embedded steel bar positioning device, comprising:

[0006] A positioning frame, which is in two groups and is placed in the vertical direction. The positioning frame includes three groups of mounting blocks. One side of the mounting block is provided with a mounting arc groove for installing a limit ring. The three groups of mounting blocks are positioned along a triangle, and adjacent mounting blocks are fixedly connected by a movable connecting rod. A fixing ring is provided in the middle of the positioning frame, and three groups of limit frames are provided on its side. A group of driving strips are slidably installed in each of the limit frames. The protruding ends of the driving strips are fixedly connected to the corresponding mounting blocks. A driving component for driving multiple groups of driving strips to slide synchronously is provided in the fixing ring.

[0007] There are three sets of telescopic connecting rods, which are used to connect two sets of movable connecting rods at corresponding positions of the two sets of positioning frames. The telescopic connecting rods are extended and retracted to adjust the distance between the two sets of positioning frames;

[0008] The supporting columns, which are in three groups, are installed at the lower end of the movable connecting rod of the bottom positioning frame and are used to support the two groups of positioning frames.

[0009] As a further solution of the utility model, the limiting ring is detachably mounted on the mounting block.

[0010] As a further solution of the utility model, the driving assembly includes a main bevel gear, a driven bevel gear and three groups of driving studs. The main bevel gear is coaxially rotatably installed in a fixed ring. The three groups of driving studs are rotatably installed in corresponding limit frames and form a spiral pair transmission with the corresponding driving strips. The three groups of driven bevel gears are coaxially installed at the ends of the corresponding driving screws and mesh with the main bevel gear.

[0011] As a further solution of the utility model, a fixing plate for rotatably mounting the main bevel gear is provided in the fixing ring, and a rotating shaft is coaxially mounted on the main bevel gear.

[0012] As a further solution of the utility model, the movable connecting rod includes a movable rod and a fixed tube, the movable rod is slidably connected in the fixed tube, and the distal ends of the movable rod and the fixed tube are fixedly connected to the corresponding mounting blocks.

[0013] As a further solution of the utility model, the telescopic connecting rod includes a sliding rod and a guide tube, the sliding rod is slidably connected in the guide tube, the distal ends of the sliding rod and the guide tube are fixedly connected to the mounting rings at the corresponding fixed tube ends, and the sliding rod and the guide tube are fixedly connected by mounting bolts.

[0014] As a further solution of the utility model, the upper end of the support column is fixedly connected to a movable connecting rod mounting ring located on the bottom positioning frame.

[0015] Compared with the prior art, the utility model provides a positioning frame, a telescopic connecting rod and a support column, wherein two groups of positioning frames are placed in a vertical direction, and three groups of mounting blocks in the positioning frame can be installed with a group of limit rings correspondingly, and the three groups of mounting blocks are placed along a triangular positioning. By adjusting the spacing between the three groups of mounting blocks by the positioning frame and extending and retracting the telescopic connecting rod, the height spacing between the two groups of positioning frames is adjusted, thereby replacing the existing three-limb grilles that need to be individually welded and customized, so that it can meet the installation requirements of three-limb grilles of different specifications and greatly improve its applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of a three-limb grid embedded steel bar positioning device in the utility model.

[0017] Figure 2 It is a structural schematic diagram of the positioning frame in the utility model.

[0018] Figure 3 For the utility model Figure 2 A magnified schematic diagram of center A.

[0019] Figure 4 It is a structural schematic diagram of the main bevel gear in the utility model.

[0020] In the attached drawings: 1. Positioning frame; 101. Mounting block; 102. Limiting ring; 103. Fixed tube; 104. Movable rod; 105. Driving bar; 106. Limiting frame; 107. Driving stud; 108. Driven bevel gear; 109. Main bevel gear; 110. Fixed ring; 111. Fixed plate; 112. Rotating shaft; 113. Mounting ring; 2. Telescopic connecting rod; 201. Sliding rod; 202. Guide tube; 3. Support column. DETAILED DESCRIPTION

[0021] The technical solution of the utility model is further described in detail below in conjunction with specific implementation methods.

[0022] like Figures 1 to 4 As shown, in the embodiment of the utility model, a three-limb grid embedded steel bar positioning device includes a positioning frame 1, which is in two groups and is placed in the vertical direction. The positioning frame 1 includes three groups of mounting blocks 101, one side of the mounting block 101 is provided with a mounting arc groove for installing a limiting ring 102, the three groups of mounting blocks 101 are positioned along a triangle, and adjacent mounting blocks 101 are fixedly connected by a movable connecting rod, a fixing ring 110 is provided in the middle of the positioning frame 1, and three groups of limiting frames 106 are provided on its side, and the limiting frames 106 are all A group of driving bars 105 are slidably installed, and the protruding ends of the driving bars 105 are fixedly connected to the corresponding mounting blocks 101. The fixed ring 110 is provided with a driving assembly for driving the multiple groups of driving bars 105 to slide synchronously; three groups of telescopic connecting rods 2 are used to connect the two groups of movable connecting rods at the corresponding positions of the two groups of positioning frames 1, and the telescopic connecting rods 2 are extended and retracted to adjust the spacing between the two groups of positioning frames 1; three groups of support columns 3 are installed at the lower ends of the movable connecting rods of the bottom positioning frame 1, and are used to support the two groups of positioning frames 1;

[0023] In the utility model, according to the specification requirements of the three-limb grid, the spacing of the three groups of mounting blocks 101 in one group of positioning frames 1 can be adjusted by the driving component, and at the same time, the spacing of the mounting blocks 101 in another group of positioning frames 1 can be adjusted synchronously through the transmission of the telescopic component;

[0024] At the same time, the telescopic connecting rod 2 is extended and retracted to adjust the height spacing between the two groups of positioning frames 1 to meet the actual construction and fixing requirements of the three-limb grid.

[0025] like Figure 2 As shown, in an embodiment of the utility model, the limit ring 102 can be detachably mounted on the mounting block 101, and the specifications of the limit ring 102 can be selected according to the specifications of the embedded steel bars of the three-limb grid to improve the compatibility of the limit ring 102 and the embedded steel bars. The limit ring 102 of the utility model is fixed to the mounting block 101 by screws.

[0026] like Figure 2 and Figure 3 As shown, in the embodiment of the utility model, the driving assembly includes a main bevel gear 109, a driven bevel gear 108 and three sets of driving studs 107, the main bevel gear 109 is coaxially rotatably mounted in a fixing ring 110, the three sets of driving studs 107 are rotatably mounted in corresponding limit frames 106, and form a spiral pair transmission with the corresponding driving strip 105, and the three sets of driven bevel gears 108 are coaxially mounted at the ends of the corresponding driving screws and mesh with the main bevel gear 109;

[0027] At the same time, a fixing plate 111 for rotatably installing the main bevel gear 109 is provided in the fixing ring 110, and a rotating shaft 112 is coaxially installed on the main bevel gear 109. When adjusting the position of the mounting block 101, the utility model can hold the rotating shaft 112 to rotate, drive the main bevel gear 109 to rotate, and at the same time drive the three groups of driven bevel gears 108 and the driving studs 107 to rotate, and the threaded transmission drives the three groups of driving bars 105 to move linearly synchronously, so as to synchronously adjust the position of the mounting block 101 and adjust the distance between adjacent mounting blocks 101 to meet the requirements of building a three-limb grid.

[0028] like Figure 1 , Figure 2 as well as Figure 4 As shown, in the embodiment of the utility model, the movable connecting rod includes a movable rod 104 and a fixed tube 103, the movable rod 104 is slidably connected in the fixed tube 103, and the distal ends of the movable rod 104 and the fixed tube 103 are fixedly connected to the corresponding mounting block 101. When the spacing of the mounting block 101 is adjusted, the movable rod 104 and the fixed tube 103 are displaced and slid;

[0029] Further, the telescopic connecting rod 2 includes a sliding rod 201 and a guide tube 202, the sliding rod 201 is slidably connected in the guide tube 202, the distal ends of the sliding rod 201 and the guide tube 202 are fixedly connected to the mounting ring 113 at the end of the corresponding fixed tube 103, and the sliding rod 201 and the guide tube 202 are fixedly connected by mounting bolts. When the utility model adjusts the spacing between the two groups of positioning frames 1, multiple groups of mounting bolts can be rotated to unlock so that the sliding rod 201 can slide freely. At the same time, when the sliding rod 201 slides to the preset position, the mounting bolts are rotated again to achieve locking, and the height spacing between the two groups of positioning frames 1 is positioned;

[0030] Furthermore, the upper end of the support column 3 is fixedly connected to the movable connecting rod mounting ring 113 located on the bottom positioning frame 1, and the positioning frame 1 is supported by the support column 3.

[0031] To sum up the above, the utility model sets a positioning frame 1, a telescopic connecting rod 2 and a support column 3, wherein two groups of positioning frames 1 are placed in the vertical direction, and three groups of mounting blocks 101 in the positioning frame 1 can be installed with a group of limit rings 102 correspondingly, and the three groups of mounting blocks 101 are placed along the triangular positioning. By adjusting the spacing between the three groups of mounting blocks 101 by the positioning frame 1 and extending and retracting the telescopic connecting rod 2, the height spacing between the two groups of positioning frames 1 is adjusted, thereby replacing the existing three-limb grille that needs to be customized by separate welding, so that it can meet the installation requirements of three-limb grilles of different specifications, thereby greatly improving its applicability.

[0032] The preferred embodiments of the present invention are described in detail above, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in this field without departing from the purpose of the present invention.

Claims

1. A three-leg grid embedded steel bar positioning device, characterized in that: include: A positioning frame, which is in two groups and is placed in the vertical direction. The positioning frame includes three groups of mounting blocks. One side of the mounting block is provided with a mounting arc groove for installing a limit ring. The three groups of mounting blocks are positioned along a triangle, and adjacent mounting blocks are fixedly connected by a movable connecting rod. A fixing ring is provided in the middle of the positioning frame, and three groups of limit frames are provided on its side. A group of driving strips are slidably installed in each of the limit frames. The protruding ends of the driving strips are fixedly connected to the corresponding mounting blocks. A driving component for driving multiple groups of driving strips to slide synchronously is provided in the fixing ring. There are three sets of telescopic connecting rods, which are used to connect two sets of movable connecting rods at corresponding positions of the two sets of positioning frames. The telescopic connecting rods are extended and retracted to adjust the distance between the two sets of positioning frames; The supporting columns, which are in three groups, are installed at the lower end of the movable connecting rod of the bottom positioning frame and are used to support the two groups of positioning frames.

2. A three-leg grid embedded steel bar positioning device according to claim 1, characterized in that: The limiting ring is detachably mounted on the mounting block.

3. A three-legged grid embedded steel bar positioning device according to claim 1, characterized in that: The driving assembly includes a main bevel gear, a driven bevel gear and three groups of driving studs. The main bevel gear is coaxially rotatably installed in a fixed ring. The three groups of driving studs are rotatably installed in corresponding limit frames and form a spiral pair transmission with the corresponding driving strips. The three groups of driven bevel gears are coaxially installed at the ends of the corresponding driving screws and mesh with the main bevel gear.

4. A three-legged grid embedded steel bar positioning device according to claim 3, characterized in that: A fixing plate for rotatably mounting the main bevel gear is arranged inside the fixing ring, and a rotary shaft is coaxially mounted on the main bevel gear.

5. A three-legged grid embedded steel bar positioning device according to claim 1, characterized in that: The movable connecting rod comprises a movable rod and a fixed tube. The movable rod is slidably connected in the fixed tube. The distal ends of the movable rod and the fixed tube are fixedly connected to corresponding mounting blocks.

6. A three-legged grid embedded steel bar positioning device according to claim 5, characterized in that: The telescopic connecting rod includes a sliding rod and a guide tube. The sliding rod is slidably connected in the guide tube. The distal ends of the sliding rod and the guide tube are fixedly connected to the mounting rings at the corresponding fixed tube ends. The sliding rod and the guide tube are fixedly connected by mounting bolts.

7. A three-legged grid embedded steel bar positioning device according to claim 6, characterized in that: The upper end of the support column is fixedly connected to a movable connecting rod mounting ring located on the bottom positioning frame.

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