Portable efficient correcting device for steel bar joist

Abstract

The utility model relates to a portable efficient correcting device for a reinforcing steel bar joist, which belongs to the technical field of coal mine tunneling support, can solve the problem of roadway deviation caused by upward deviation of the reinforcing steel bar joist at the top in the existing coal mine tunneling process, and comprises a telescopic rod, and the center of the telescopic rod is vertically connected with a connecting rod for laser pointing; a first lifting lug is arranged at the top end of the free end of the connecting rod, a plurality of second lifting lugs are arranged at the bottom of the connecting rod, a rope is connected to the second lifting lugs, and a plumb bob is connected to the tail end of the rope. By means of the device, the situation that the roadway supporting quality is affected by unequal row pitches of the left side and the right side of the top steel bar joist, installation inclination and the like is effectively avoided.

Description

Technical Field

[0001] This utility model belongs to the field of coal mine tunneling support technology, specifically relating to a portable high-efficiency correction device for steel bar support beams. Background Technology

[0002] In underground anchor mesh support tunnels, the direction of tunnel excavation is mainly controlled by laser pointers. The effective controllable distance of the laser pointer is about 100-120 meters. Although the laser pointer can ensure that the overall direction of the tunnel will not deviate, it cannot guarantee the accuracy of the direction of each meter of the tunnel during actual excavation. Over-excavation and under-excavation are common occurrences.

[0003] The top steel reinforcement support beam should be perpendicular to the direction of the roadway extension. In order to ensure the overall direction of the roadway, the spacing between the left and right sides of the top steel reinforcement support beam is often uneven and the installation is tilted during the support process. This seriously affects the quality of roadway support. Moreover, the tilted installation of several consecutive rows can cause visual errors for the machine operator, ultimately leading to the roadway deviating and poor roadway formation. Utility Model Content

[0004] This utility model addresses the problem of roadway deviation caused by the upward deviation of the top steel reinforcement support beam during coal mine tunneling by providing a portable and efficient steel reinforcement support beam correction device.

[0005] The present invention adopts the following technical solution:

[0006] A portable high-efficiency straightening device for reinforcing bar support beams includes a telescopic rod, a connecting rod for laser pointing is vertically connected to the center of the telescopic rod, a first lifting lug is provided at the top of the free end of the connecting rod, and several second lifting lugs are provided at the bottom of the connecting rod. A rope is connected to the second lifting lug, and a plumb bob is connected to the end of the rope.

[0007] Furthermore, the telescopic rod includes a main rod, with secondary rod one passing through each end of the main rod, and secondary rod two passing through each of the secondary rod one.

[0008] Furthermore, the two secondary rods of type one are of the same length, and the two secondary rods of type two are of the same length.

[0009] Furthermore, a fixing structure is provided between the first auxiliary rod and the main rod, and between the second auxiliary rod and the first auxiliary rod.

[0010] Furthermore, the fixing structure includes fixing holes provided on the surfaces of the main rod, the first auxiliary rod, and the second auxiliary rod, with pins for fixing inserted through the fixing holes.

[0011] Furthermore, each of the secondary rods is provided with a lifting lug three, which are symmetrically arranged relative to the center of the main rod.

[0012] Furthermore, the number of the second type of lifting lugs is three, and the second type of lifting lugs are arranged at equal intervals along the connecting rod.

[0013] Furthermore, the distance between the two lugs is 400mm.

[0014] The beneficial effects of this utility model are as follows:

[0015] By utilizing the vertical relationship between the laser pointer and the steel reinforcement support beam at the top of the tunnel, this device is used to correct the top steel reinforcement support beam, ensuring that the installation of the steel reinforcement support beam is not deviated, and that any deviation can be corrected in a timely manner.

[0016] By using this invention, issues such as unequal spacing between the left and right sides of the top steel reinforcement support beam and installation tilt, which affect the quality of roadway support, are effectively avoided. It ensures that the steel reinforcement support beam is aligned with the roadway axis, and that each row of anchor cables is aligned in a straight line, thus guaranteeing the engineering quality of the roadway support. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the usage state of this utility model;

[0019] Wherein: 1-Connecting rod; 2-Lifting lug one; 3-Lifting lug two; 4-Rope; 5-Plumb bob; 6-Main rod; 7-Secondary rod one; 8-Secondary rod two; 9-Lifting lug three; 10-Working face; 11-Left side of roadway; 12-Right side of roadway. Detailed Implementation

[0020] The present invention will be further described with reference to the accompanying drawings.

[0021] As shown in the figure, a portable high-efficiency straightening device for steel bar support beams includes a telescopic rod. A connecting rod 1 for laser pointing is vertically connected to the center of the telescopic rod. The top of the free end of the connecting rod 1 is provided with a lifting lug 2, and the bottom of the connecting rod 1 is provided with several lifting lugs 3. A rope 4 is connected to the lifting lugs 3, and a plumb bob 5 is connected to the end of the rope 4.

[0022] Furthermore, the telescopic rod includes a main rod 6, with secondary rod 7 passing through both ends of the main rod 6, and secondary rod 8 passing through the secondary rod 7.

[0023] Furthermore, the two secondary rods 7 are of the same length, and the two secondary rods 8 are of the same length.

[0024] Furthermore, a fixing structure is provided between the secondary rod 7 and the main rod 6, and between the secondary rod 8 and the secondary rod 7.

[0025] Furthermore, the fixing structure includes fixing holes provided on the surfaces of the main rod 6, the first auxiliary rod 7, and the second auxiliary rod 8, with pins for fixing inserted through the fixing holes.

[0026] Furthermore, each of the secondary rods 8 is provided with a lifting lug 9, which is symmetrically arranged relative to the center of the main rod 6.

[0027] Furthermore, there are three lifting lugs 3, which are arranged at equal intervals along the connecting rod 1.

[0028] Furthermore, the spacing between the two lugs 3 is 400mm.

[0029] In this utility model, the telescopic pole first uses a 1-meter-long 4-point pipe as the central main pole. At both ends of the main pole, 50cm-long steel pipes with holes slightly smaller than the 4-point pipe are installed. At each end of these steel pipes, 50cm-long 2-point pipes with holes slightly smaller than the 4-point pipe are then installed. Two lifting lugs (type 3) are welded to each end of the 2-point pipe using small nuts. Several fixing holes are made on the surface of each pipe. A 1.5-meter-long connecting rod is welded perpendicularly to the main pole in the center. At the lower part of the connecting rod, a lifting lug (type 2) is welded every 400mm using small nuts. A rope and a plumb bob are tied to the lifting lugs (type 2).

[0030] This invention utilizes the perpendicular relationship between a laser pointer and the steel reinforcement support beam at the top of the tunnel. This device is used to correct the top steel reinforcement support beam, ensuring that the installation of the steel reinforcement support beam is not deviated and that any deviation can be corrected in time.

[0031] When using this utility model, first suspend the connecting rod 1 on the top plate of the tunnel, so that the plumb bob 5 hangs vertically, ensuring that the tunnel laser is set on the three ropes 4. Then, pull out the telescopic rod to extend it, suspend the main rod 6 on the top plate of the tunnel, and finally make a slight adjustment to the direction of the top support beam to ensure that the top support beam is parallel to the main rod 6, so as to correct the steel support beam at the top of the tunnel.

Claims

1. A portable, high-efficiency rebar support beam correction device, characterized in that: Includes a telescopic rod, the center of which is vertically connected to a connecting rod (1) for laser pointing, the top of the free end of the connecting rod (1) is provided with a first lug (2), the bottom of the connecting rod (1) is provided with several second lugs (3), a rope (4) is connected to the second lug (3), and a plumb bob (5) is connected to the end of the rope (4). The telescopic rod includes a main rod (6), with secondary rod one (7) passing through both ends of the main rod (6), and secondary rod two (8) passing through the secondary rod one (7).

2. The portable high-efficiency straightening device for reinforcing bar support beams according to claim 1, characterized in that: The two secondary rods (7) are of the same length, and the two secondary rods (8) are of the same length.

3. The portable high-efficiency correction device for reinforcing bar support beams according to claim 1, characterized in that: A fixing structure is provided between the auxiliary rod 1 (7) and the main rod (6) and between the auxiliary rod 2 (8) and the auxiliary rod 1 (7).

4. The portable high-efficiency correction device for reinforcing bar support beams according to claim 3, characterized in that: The fixing structure includes fixing holes provided on the surfaces of the main rod (6), the first auxiliary rod (7), and the second auxiliary rod (8), with pins for fixing inserted in the fixing holes.

5. The portable high-efficiency straightening device for reinforcing bar support beams according to claim 1, characterized in that: The secondary rod (8) is provided with a lifting lug (9), which is symmetrically arranged with respect to the center of the main rod (6).

6. The portable high-efficiency straightening device for reinforcing bar support beams according to claim 1, characterized in that: The number of the second type of lifting lugs (3) is three, and the second type of lifting lugs (3) are arranged at equal intervals along the connecting rod (1).

7. The portable high-efficiency straightening device for reinforcing bar support beams according to claim 6, characterized in that: The distance between the two lugs (3) is 400mm.

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