Pipe jacking device for underground roadway of coal mine

Abstract

The utility model provides a pipe jacking device for an underground roadway of a coal mine. The pipe jacking device comprises an installation support, a telescopic mechanism is fixedly installed on the installation support, a transverse plate is fixedly connected to the upper end of the telescopic mechanism, a sleeve is fixedly connected to the transverse plate, and a groove used for containing a jacking pipe is formed in the sleeve. A shell is fixedly connected to the outer side face of the mounting support, a top plate is fixedly connected to the top of the shell, a through hole is formed in the center of the top plate, and the through hole and the sleeve are coaxially arranged; the top plate is further provided with a partition mechanism. According to the pipe jacking device, continuous stacking of jacking pipes is achieved, the whole structure of the device is simple, operation is easy, and the installation efficiency of the jacking pipes of the rock stratum hole in the top of the underground coal mine roadway is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pipe jacking devices, in particular to a pipe jacking device for coal mine underground roadways. Background Technique

[0002] Coal mine underground roadways are the general term for various underground spaces that are excavated in different rocks along different directions, with different dips, different cross-sections and lengths, and serve different scopes and are used for different purposes. Mine roadways are divided into three categories according to the service scope: development roadways, preparatory roadways, and extraction roadways. Development roadways are roadways that serve the entire coalfield or one or more first-level division units. Extraction roadways are roadways that directly serve one or more extraction units. The roadways between these two types of roadways are preparatory roadways.

[0003] During the construction process of coal mine underground roadways, it is necessary to vertically jack up multiple sections of pipe bodies and install them into the holes in the top rock layer that have been drilled. When the existing devices are used for pipe jacking, it is not convenient to continue installing the next pipe body after installing the previous one, which greatly affects the construction efficiency. Content of the Utility Model

[0004] The purpose of the utility model is to provide a pipe jacking device for coal mine underground roadways to solve the above-mentioned deficiencies of the prior art.

[0005] To achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A pipe jacking device for coal mine underground roadways includes an installation bracket, a telescopic mechanism is fixedly installed on the installation bracket, the upper end of the telescopic mechanism is fixedly connected with a cross plate, a sleeve is fixedly connected to the cross plate, and a groove for placing the pipe to be jacked is provided inside the sleeve; the outer side of the installation bracket is fixedly connected with a housing, the top of the housing is fixedly connected with a top plate, a through hole is provided at the center of the top plate, and the through hole is coaxially arranged with the sleeve; a partition mechanism is also installed on the top plate.

[0007] Further, the telescopic mechanism adopts a hydraulic scissor lift.

[0008] Further, a fixing block for limiting the placement depth of the pipe to be jacked is arranged on the inner bottom surface of the groove.

[0009] Further, a plurality of spring pieces for fixing the bottom of the pipe to be jacked are arranged on the inner side surface of the groove.

[0010] Further, the diameter of the through hole is larger than the diameter of the sleeve.

[0011] Further, the partition mechanism includes a plurality of hydraulic push rods fixedly installed on the top plate along the axial direction of the through hole, and a clamping block capable of clamping the outer side of the jacking pipe is fixedly connected to the piston rod of the hydraulic push rod.

[0012] As can be seen from the above technical solutions, the jacking pipe device of the present invention limits and fixes the jacking pipe placed in the casing through the fixing block and the spring piece. The hydraulic scissor lift is started to lift the cross plate to drive the casing and the jacking pipe in the casing to move upward and pass through the through hole on the top plate. When the upper edge of the casing abuts against the lower end surface of the top plate, the piston rod of the hydraulic push rod extends to drive the clamping block to clamp and fix the lower end of the jacking pipe. At the same time, the hydraulic scissor lift descends to drive the cross plate and the casing to disengage from the jacking pipe and reset. Then, a new jacking pipe is placed in the casing, and the above steps are repeated until the top of the new jacking pipe abuts against the bottom of the clamped and fixed jacking pipe. By circulating the above steps, the jacking pipe can be continuously pushed into the rock layer hole, realizing the stacking of jacking pipes; the overall structure of the jacking pipe device is simple and easy to operate, and when applied to the installation operation of the jacking pipe in the rock layer hole at the top of the coal mine underground roadway, the work efficiency is greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0014] Figure 2 is a cross-sectional view of the casing of the present invention;

[0015] In the figure: 1, installation bracket; 2, hydraulic shearer; 3, cross plate; 4, casing; 5, groove; 6, housing; 7, top plate; 8, through hole; 9, fixing block; 10, spring piece; 11, hydraulic push rod; 12, clamping block. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0016] A preferred embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

[0017] As Figure 1 shown, the jacking pipe device for the coal mine underground roadway includes an installation bracket 1, a hydraulic scissor lift 2 capable of lifting or descending in the vertical direction is fixedly installed on the installation bracket 1, the upper end of the hydraulic scissor lift 2 is fixedly connected to a cross plate 3, a casing 4 is fixedly connected to the cross plate 3, and a groove 5 for placing the jacking pipe is provided inside the casing 4; the outer side of the installation bracket 1 is fixedly connected to a housing 6, the top of the housing 6 is fixedly connected to a top plate 7, a through hole 8 is provided at the center of the top plate 7, and the through hole 8 is coaxially arranged with the casing 4; a partition mechanism is also installed on the top plate 7.

[0018] Specifically, as Figure 2As shown, a fixing block 9 for limiting the placement depth of the jacking pipe is arranged on the inner bottom surface of the groove 5; two spring pieces 10 for fixing the bottom of the jacking pipe are arranged on the inner side surface of the groove 5, so that the jacking pipe keeps a vertical state during the movement, and further enables the jacking pipe to accurately pass through the through hole 8.

[0019] In the preferred embodiment, the diameter of the through hole 8 is larger than the diameter of the sleeve 4; the partition mechanism includes two hydraulic push rods 11 fixedly installed on the top plate along the axial direction of the through hole 8, and a clamping block 12 capable of clamping the outer side surface of the jacking pipe is fixedly connected to the piston rod of the hydraulic push rod 11.

[0020] In specific use, a jacking pipe is vertically placed in the groove 5 and is limited and fixed by the fixing block 9 and the spring pieces 10. The hydraulic scissor lift 2 is started to lift the cross plate 3 to drive the sleeve 4 and the jacking pipe inside the sleeve to move upward and pass through the through hole on the top plate 7. When the upper edge of the sleeve 4 abuts against the lower end surface of the top plate 7, the piston rod of the hydraulic push rod 11 extends to drive the clamping block 12 to clamp and fix the lower end of the jacking pipe. At the same time, the hydraulic scissor lift 2 descends to drive the cross plate 3 and the sleeve 4 to separate from the jacking pipe and reset. Then a new jacking pipe is placed in the sleeve 4, and the above steps are repeated until the top end of the new jacking pipe abuts against the bottom of the clamped and fixed jacking pipe. By circulating the above steps, the jacking pipe can be continuously pushed into the rock layer hole to achieve the stacking of the jacking pipes.

[0021] The above-described embodiments are only descriptions of the preferred embodiments of the present invention, and do not limit the scope of the present invention. Without departing from the design spirit of the present invention, various deformations and improvements made by those of ordinary skill in the art to the technical solutions of the present invention shall fall within the protection scope determined by the claims of the present invention.

Claims

1. A pipe jacking device for underground coal mine tunnels, comprising a mounting bracket, characterized in that: A telescopic mechanism is fixedly mounted on the mounting bracket, a transverse plate is fixedly connected to the upper end of the telescopic mechanism, a sleeve is fixedly connected to the transverse plate, and a groove for placing a jacking pipe is provided inside the sleeve; The outer side surface of the mounting bracket is fixedly connected to a housing, the top of the housing is fixedly connected to a top plate, a through hole is opened at the center of the top plate, and the through hole is coaxially arranged with the sleeve; A partition mechanism is also installed on the top plate.

2. A pipe jacking device for underground coal mine tunnels according to claim 1, characterized in that: The telescopic mechanism adopts a hydraulic scissor machine.

3. A pipe jacking device for underground coal mine tunnels according to claim 1, characterized in that: The inner bottom surface of the groove is provided with a fixing block for limiting the placement depth of the jacking pipe.

4. A pipe jacking device for underground coal mine tunnels according to claim 3, characterized in that: The inner side surface of the groove is provided with a plurality of spring sheets for fixing the bottom of the top pipe.

5. A pipe jacking device for underground coal mine tunnels according to claim 1, characterized in that: The diameter of the through hole is greater than the diameter of the sleeve.

6. A pipe jacking device for underground coal mine tunnels according to claim 5, characterized in that: The partition mechanism comprises a plurality of hydraulic push rods fixedly mounted on the top plate along the axial direction of the through hole, and piston rods of the hydraulic push rods are fixedly connected with clamping blocks capable of clamping the outer side surface of the top pipe.

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