CN212428894U

CN212428894U - Movable positioning fixture for fixing tunnel locking anchor rod and L-shaped rib

Info

Publication number: CN212428894U
Application number: CN202020916884.6U
Authority: CN
Inventors: 高文鹏; 赵凡; 刘洋涛; 姜志亮; 贺鑫
Original assignee: First Engineering Co Ltd of China Railway No 12 Bureau Group Co Ltd
Current assignee: First Engineering Co Ltd of China Railway No 12 Bureau Group Co Ltd
Priority date: 2020-05-27
Filing date: 2020-05-27
Publication date: 2021-01-29
Anticipated expiration: 2030-05-27

Abstract

The utility model belongs to the technical field of tunnel construction, and in particular relates to a mobile positioning fixture for fixing a tunnel foot-locking anchor rod and an L-rib, which solves the problem that the L-rib connecting the locking foot-anchor rod and the steel frame in the welding process of the existing tunnel construction is solved. The problem of the lack of effective positioning fixtures includes a fixed frame with an opening on the right side. The fixed frame includes a top plate and a bottom plate arranged in parallel up and down. The left ends of the top plate and the bottom plate are fixed with a vertical connecting plate. A screw hole is provided, the screw hole is threadedly connected with a screw rod, the top end of the screw rod is fixed with a limit plate, the bottom end of the screw rod is fixed with an adjusting rod, and the area between the top plate and the limit plate is used for setting the locking foot anchor rod and the L rib. Adjusting the length of the screw can complete the positioning of the top plate and the limit plate to the locking foot anchor rod and L-rib. The utility model effectively ensures the precision and construction quality of the fixed installation of the locking foot anchor rod and the steel frame by using the L-bar.

Description

Movable positioning fixture for fixing tunnel locking anchor rod and L-shaped rib

Technical Field

The utility model belongs to the technical field of the tunnel construction, concretely relates to portable positioning fixture that tunnel lock foot stock and L muscle are fixed.

Background

The original balance of surrounding rocks can be broken in the tunnel excavation process, so that unstable factors are generated on the surrounding rocks and the vault due to plastic deformation. In order to prevent the disturbed surrounding rock from being excessively displaced, a reasonable supporting structure is required to bear the pressure of the surrounding rock. The steel arch is an important component in a primary supporting structure of a weak surrounding rock tunnel, has higher rigidity and stronger bearing capacity, can effectively control the deformation and displacement of the surrounding rock before the sprayed concrete does not reach the required strength, and bears the formation pressure and restricts the deformation. In the primary support process, a foot locking anchor rod is usually required to be additionally arranged in the range of a side wall so as to enhance the integral stability of a primary support structure and prevent arch springing from shrinking and falling.

In the traditional construction method, the L-shaped rib of the locking pin for connecting the tunnel locking anchor rod and the steel frame is welded manually in a handheld mode, a reinforcing steel bar positioning clamp is not arranged, the construction level of workers is uneven, the installation precision and the construction quality are difficult to guarantee, the L-shaped rib, the steel frame and the anchor rod cannot be effectively connected and need to be repeatedly disassembled and welded, and great quality defects and potential safety hazards are left in the primary supporting process on site.

Disclosure of Invention

The utility model discloses a solve the problem that the L muscle of connecting lock foot stock and steelframe lacks effective positioning fixture in the welding process among the current tunnel construction, provide a portable positioning fixture that tunnel lock foot stock and L muscle are fixed.

The utility model discloses a realize through following technical scheme: the utility model provides a tunnel lock foot stock is fixed with L muscle portable positioning fixture, including right side open-ended fixed frame, fixed frame includes upper and lower parallel arrangement's roof and bottom plate, the left end of roof and bottom plate is fixed with even board rather than the vertically, the outside of even board is provided with handheld portion, be provided with the screw on the bottom plate, screw threaded connection has the screw rod, the top of screw rod is fixed with the limiting plate, the bottom mounting of screw rod has the regulation pole, region between roof and the limiting plate is used for setting up lock foot stock and L muscle, can accomplish roof and limiting plate through the length of adjusting the screw rod and to locking foot stock, the location of L muscle.

The limiting plate is a square plate or a circular plate, and the side length or the diameter of the limiting plate is the same as the diameter of the section of the lock pin anchor rod.

The screw hole that sets up on the bottom plate includes the nut of three vertical stack and concentric setting, is provided with the through-hole on the bottom plate, and nut welded fastening is in the through-hole.

Compared with the prior art, the utility model has the advantages that:

the utility model has the advantages of reasonable design, filled the blank that the lock foot L muscle of tunnel connection lock foot stock and steelframe does not have effective positioning fixture among traditional worker's method for the standardization is gradually brought into in tunnel construction, has effectively guaranteed lock foot stock and steelframe and is utilizing the L muscle to carry out fixed mounting's precision and construction quality.

Drawings

FIG. 1 is a schematic structural view of the present invention in a use state;

FIG. 2 is a schematic structural view of the present invention;

FIG. 3 is a schematic structural view of the fixing frame of FIG. 2;

fig. 4 is a bottom view of the bottom plate of fig. 3.

In the figure: 1-fixed frame, 1.1-bottom plate, 1.2-connecting plate, 1.3-top plate, 1.4-screw hole, 2-adjusting rod, 3-hand-held part, 4-screw rod, 5-limiting plate, 6-foot-locking anchor rod, 7-L rib and 8-steel frame.

Detailed Description

It is right to refer to fig. 1-4 the utility model discloses it further explains to go forward, a fixed portable positioning fixture of tunnel lock foot stock and L muscle, including right side open-ended fixed frame 1, fixed frame 1 includes upper and lower parallel arrangement's roof 1.3 and bottom plate 1.1, roof 1.3 and bottom plate 1.1's left end are fixed with and link board 1.2 rather than the vertically, the outside of linking board 1.2 is provided with handheld portion 3, be provided with screw 1.4 on the bottom plate 1.1, screw 1.4 threaded connection has screw rod 4, screw rod 4's top is fixed with limiting plate 5, screw rod 4's bottom mounting has regulation pole 2, the region between roof 1.3 and the limiting plate 5 is used for setting up lock foot stock 6 and L muscle 7, can accomplish roof 1.3 and limiting plate 5 through adjusting screw rod 4's length and lock foot stock 6, L muscle 7's location.

The limiting plate 5 is a square plate or a circular plate, and the side length or the diameter of the limiting plate 5 is the same as the section diameter of the foot locking anchor rod 6. The screw 1.4 that sets up on bottom plate 1.1 includes the nut of three vertical stack and concentric setting, is provided with the through-hole on bottom plate 1.1, and nut welded fastening is in the through-hole.

Utilize the utility model discloses realize in tunnel construction that lock foot stock and steelframe utilize the L muscle to carry out the work progress of fixing as follows:

in the primary support process of the tunnel, a steel frame 8 is arranged in the range of the side wall, a foot locking anchor rod 6 is arranged, and the steel frame and the foot locking anchor rod are welded and fixed into a whole by utilizing an L rib 7 so as to enhance the overall stability of the primary support structure in the tunnel.

Firstly, the operator holds the holding part 3 with one hand and screws the adjusting rod 2 with the other hand, so that the screw 4 drives the limiting plate 5 to move downwards to a proper area.

Further, will the utility model discloses move to the hookup location of lock foot stock 6 and L muscle 7, revolve wrong regulation pole 2 for screw rod 4 drives limiting plate 5 upward movement and with lock foot stock 6, the 7 chucking of L muscle, realizes the chucking location to lock foot stock 6, L muscle 7 until under roof 1.3 and limiting plate 5's effect.

Further, keep L muscle 7 parallel with ground and with the contact of steelframe 8, carry out spot welding location with the two earlier, then with lock foot stock 6 and the spot welding location of L muscle 7. Revolve soon downwards and twist regulation pole 2 for screw rod 4 drives limiting plate 5 and moves down to suitable regional back, will the utility model discloses move to next the region that needs the location can. So far, accomplish the location of lock foot stock 6, steelframe, L muscle 7 at a position, it can to the designing requirement with its full weld after the location is accomplished.

Claims

1. A mobile positioning fixture for fixing a tunnel foot-locking anchor rod and an L-rib, characterized in that: a fixed frame (1) with an opening on the right side is included, and the fixed frame (1) includes a top plate (1.3) and a bottom plate arranged in parallel up and down. (1.1), the left ends of the top plate (1.3) and the bottom plate (1.1) are fixed with a vertical connecting plate (1.2), the outer side of the connecting plate (1.2) is provided with a hand-held part (3), and the bottom plate (1.1) is provided with screw holes (1.4), the screw hole (1.4) is threadedly connected with the screw (4), the top of the screw (4) is fixed with the limit plate (5), the bottom end of the screw (4) is fixed with the adjusting rod (2), the top plate (1.3) The area between it and the limit plate (5) is used to set the locking foot anchor rod (6) and the L-rib (7). By adjusting the length of the screw (4), the top plate (1.3) and the limit plate (5) can be paired The positioning of the locking foot anchor rod (6) and the L-rib (7).

2. The mobile positioning fixture for fixing the tunnel foot-locking anchor rod and the L-rib according to claim 1, wherein the limit plate (5) is a square plate or a circular plate, and the limit plate (5) is a square plate or a circular plate. The side length or diameter is the same as the diameter of the section of the locking foot anchor rod (6).

3. The mobile positioning fixture for fixing a tunnel foot-locking anchor rod and an L-rib according to claim 1, characterized in that: the screw holes (1.4) provided on the bottom plate (1.1) comprise three vertically superimposed and concentrically arranged screw holes (1.4). The nut is provided with a through hole on the bottom plate (1.1), and the nut is welded and fixed in the through hole.