CN110778358A - Modular main roof equipment for rescue of collapsed roadway in coal mine and its assembling method - Google Patents

Abstract

The invention belongs to the technical field of tunnel boring machines for coal mines. It is a modular main roof equipment for rescue of coal mine collapsed tunnels, in which an integrated hydraulic pump station is connected to the oil cylinder in the main roof cylinder assembly through oil lines, and the guide rail module is installed along the roof of the tunnel where the coal mine is expected to collapse. The rear support assembly is set at the tail section of the guide rail module. The extended end of the oil cylinder of the main jacking cylinder assembly is connected to the back of the front jacking iron module. The front end of the tool tube is connected to the tail end of the head tube of the pipe jacking machine. The tool The pipe and the head pipe of the pipe jacking machine are slidably arranged on the guide rail module; there are several hydraulic balance guides, and the hydraulic balance guides are arranged at equal intervals, so that several hydraulic balance guides are used to position the tool pipe and the pipe jacking machine. A straight-line extending channel in the direction of the head pipe jacking. This equipment solves the problem that traditional pipe jacking equipment is too large to be transported underground and requires long construction time to pour the back wall, foundation, and front wall. The invention also provides an assembly method of the equipment.

Description

Modular main roof equipment for rescue of collapsed roadway in coal mine and its assembling method

technical field

The invention belongs to the technical field of roadheaders for coal mines, in particular to a jacking device for a pipe jacking roadheader for coal mines, which belongs to a main jacking device for the collapse condition of deep mine coal mines.

Background technique

After the roof collapse accident caused by the change of ground stress in the coal mine, the commonly used rescue methods are: (1) Drilling rescue holes on the ground and dredging the life-saving passages underground for rescue. In terms of rescue efficiency, there are few successful cases around the world. (2) Clear the standard chartered rescue channel. Clearing the slag in the collapsed roadway and opening the rescue channel in the coal mine not only has a huge amount of work, but also has a slow progress, and the risk of secondary collapse is serious and easy to cause secondary injury. Therefore, it is proposed to use the method of pipe jacking to open the rescue channel underground. This method can not only greatly reduce the construction amount, but also have its own support to prevent secondary collapse. It is an ideal method for the construction of rescue channels.

Due to the following problems in the underground pipe jacking rescue construction environment: (1) In terms of space size: the general width of the coal mine underground rescue site is not more than 4 meters and the height is not more than 3.5 meters, and the current equipment cannot meet the size requirements. (2) Rescue equipment: Large-scale equipment cannot be transported to the rescue site for construction, the equipment is not complete, and many rescue methods are limited. (3) Explosion-proof aspects: Gas and other flammable and explosive gases are unknown at the underground collapse site of coal mines, which can easily cause explosions and cause secondary accidents. (4) In terms of construction environment: the construction environment of underground workers is high temperature and high humidity, and the labor intensity is high and the efficiency is low during rescue. (5) Transportation: The transportation of relevant rescue settings in coal mines can only be carried out by flatbed trucks, and the size of transportation components is greatly limited. Although the current technology of pipe jacking construction is relatively mature, due to the above problems, it has not been successfully applied to the field of underground rescue in collapsed environments.

The construction method of the main roof equipment of the conventional pipe jacking machine is to construct a reinforced concrete wall integrally poured with the inner lining wall to bear the reaction force of the jack. During the whole construction process, the pressure generated by the pipe jacking is all concentrated on the back wall. superior. The second is to construct a front wall, which is used to guide the machine head to enter the hole smoothly, and seal the construction object to prevent grouting leakage. The front wall can prevent the machine head from vibrating too much and cause the jacking direction to shift, and has a sealing function to prevent The slurry flows out during grouting. The conventional practice of the front wall is to first weld steel plates into a cylindrical shape, and then pour it on the opening surface on site to make it fixed on the pre-jacking surface. This method not only the cylinder is larger and heavier, but also requires a long pouring time, which is not suitable for use in the environment of loose bodies in collapsed roadways. Finally, the corresponding main roof rails, main roof oil cylinders, main roof pump stations, front roof irons and other main roof equipment are arranged in sequence.

SUMMARY OF THE INVENTION

In order to solve the above problems, a modular main roof equipment for coal mine collapse roadway rescue solves the problem that the traditional pipe jacking equipment is too large to be transported underground and the construction time of the back wall, foundation and front wall needs to be poured, saving on-site pouring. Time, realize the direction control of the pipe jacking, reduce manual operation, and can be used directly on site, which is more in line with the rapidity, safety, explosion-proof and other characteristics of coal mine rescue construction needs. In addition, the present invention also proposes an assembling method of the equipment.

For achieving the above object, the technical scheme adopted in the present invention is:

In the first technical solution, a modular main roof equipment for coal mine collapsed roadway rescue includes an integrated hydraulic pump station, an electrical control system, a rear support assembly, a main roof oil cylinder assembly, a front roof iron module, a guide rail module, a hydraulic Balance guide, tool pipe and pipe jacking machine head pipe, in which the integrated hydraulic pump station is connected with the oil cylinder in the main top oil cylinder assembly through the oil circuit to drive the oil cylinder in the main top oil cylinder assembly to extend or retract. It is expected that the collapsing roadway of the coal mine will be set at the jacking position, the rear support assembly is set at the tail section of the guide rail module, the main top oil cylinder assembly is set at the front support surface of the rear support assembly, and the front top iron module is set at the guide rail module. and the protruding end of the cylinder of the main top cylinder assembly is connected to the back of the front top iron module, the entire surface of the front top iron module is in contact with the tail end of the tool tube, and the front end of the tool tube is butted with the tail end of the head tube of the pipe jacking machine. and the tool tube and the head tube of the pipe jacking machine are slidably arranged on the guide rail module;

There are several hydraulic balance guides, and the hydraulic balance guides are arranged at equal intervals, so that the several hydraulic balance guides form a straight extending channel for positioning the tool pipe and the jacking direction of the head pipe of the pipe jacking machine.

In the first technical solution, preferably, the rear support assembly includes a rear support leg module, a connecting bolt assembly and a backrest module, wherein the rearrest module is arranged vertically, and one end of the support leg module is supported at the rear through the connecting bolt assembly On the back of the backrest module, the other end of the support leg module is inserted into the ground through a built-in anchor rod to support the back of the backrest module, and the main body of the top oil cylinder assembly abuts on the front of the backrest module.

In the first technical solution, preferably, the main top cylinder assembly includes several groups of rectangular frame structures and main top cylinders, and in each group of main top cylinder assemblies, the main top cylinder is placed in the frame structure, And a plurality of the main top oil cylinder assemblies can be stacked on each other through the frame structure.

In the first technical solution, preferably, the guide rail module is composed of multiple sections of guide rails that can be quickly docked.

In the first technical solution, preferably, the hydraulic balance guide includes two guide brackets, an upper support beam, at least two pressing wheels and an elastic reset device, and the two guide brackets are symmetrically arranged On both sides of the guide rail module, the main body of the upper support beam is a "U"-shaped structure, and the two free ends of the upper support beam are quickly connected to the top of the guide bracket through the fixed latch assembly respectively, and the pressing wheel is elastically connected. The reset device is installed on the upper support beam, so that the outer peripheral surface of the pressing wheel can abut on the outer wall of the tool tube or the head tube of the pipe jacking machine, so that the pressing wheel is pressed and guided to the tool tube or the head tube of the pipe jacking machine. push direction.

In the first technical solution, preferably, the telescopic direction of the movable part in the elastic reset device passes through the axis of the tool pipe or the head pipe of the pipe jacking machine.

In the first technical solution, preferably, the upper support beam includes a cross beam and two inclined beams, the top ends of the two inclined beams are respectively connected to the ends of the cross beam, and the main bodies of the two inclined beams are inclined away from the cross beam. Extend downward, so that the cross beam and the two inclined beams form a "Y"-shaped structure, the elastic reset device is installed on the inclined beam, and the telescopic direction of the movable part in the elastic reset device is perpendicular to the extension direction of the main body of the inclined beam.

In the first technical solution, preferably, the elastic reset device includes a bladder accumulator, an oil pipe and several plunger oil cylinders, the cylinder body of the plunger oil cylinder is installed on the upper support beam, and the pressing wheel is installed At the extension end of the plunger cylinder, the oil cavity in the cylinder of the plunger cylinder is connected with the skin accumulator through the oil pipe, and the telescopic impulse of the plunger cylinder is buffered by the skin accumulator.

In the first technical solution, preferably, the front top iron module body includes a U-shaped top iron and two front top iron support rollers, the inner cavity of the U-shaped top iron is opened upward, and the front top iron supports The rollers are respectively arranged on both sides of the bottom of the U-shaped top iron, and the U-shaped top iron is slidably installed on the guide rail module through the front top iron support roller, and the protruding end of the main top oil cylinder assembly and the tail end of the tool tube are respectively abutted on the rail module. The end faces on both sides of the U-shaped top iron.

In a second technical solution, a method for assembling modular main roof equipment for rescue of collapsed coal mines, for assembling the modular main roof equipment for rescue of collapsed coal mines as proposed in the first technical solution, includes the following steps :

Step 1. Pre-measure the construction site conditions to determine the position of the jacking axis;

Step 2. After lifting and transporting the rear support assembly to a suitable position, anchor the rear support assembly on the ground, arrange the guide rail module at the position close to the backrest module, and level the guide rail module. The rear support assembly is bolted to the ground. In the rear section of the guide rail module, two main top oil cylinder assemblies are arranged on both sides of the rear backrest module. The protruding end of the oil cylinder in the main top oil cylinder assembly is quickly connected to the back of the front top iron module through bolts, and the rear of the main top oil cylinder assembly is tightened. Lean on the front of the backrest module;

Step 3. Lift the pipe jacking machine head pipe and tool pipe to the guide rail module, install the hydraulic balance guide outside the pipe jacking machine head pipe and tool pipe; connect the integrated hydraulic pump station and the main jacking cylinder, and connect the electrical control The power cable at the system is connected to the cutting motor inside the head tube of the pipe jacking machine to complete the power connection preparation;

Step 4. Start the explosion-proof motor of the integrated hydraulic pump station, and use a long pressure measuring line to inject pressure on each bladder accumulator on the hydraulic balance guide in turn. When the mechanical pressure gauge shows the predetermined pressure, stop the pressure. Remove the pressure measuring line;

Step 5. Control the front and rear movement of the main jacking cylinder through the explosion-proof electronically controlled load-sensitive control valve in the integrated hydraulic pump station for debugging operations; start the cutting motor inside the head pipe of the pipe jacking machine to make the head run and debug without load.

The beneficial effects of using the present invention are:

The modularized main roof equipment and installation method for rescue of collapsed roadway in a coal mine of the present invention have the characteristics of rapid installation and convenient transportation, can ensure that the rescue equipment can be quickly put into rescue, and fully meet the urgency of pipe jacking rescue construction in collapsing roadway in coal mines. Require. Through the design of rear support leg module, segmented guide rail module, hydraulic balance guide module, etc., the on-site concrete pouring time and installation workload are reduced, the main roof equipment can be quickly assembled and put into use, and the overall installation time of the main roof equipment can be guaranteed within Within 4 hours, it is very suitable for underground collapse roadway rescue applications.

Description of drawings

Fig. 1 is a schematic diagram of the overall structure of the modular main roof equipment for rescue of a collapsed roadway in a coal mine according to the present invention.

2 is a schematic structural diagram of a hydraulic balance guide in the modular main roof equipment for rescue of a collapsed roadway in a coal mine according to the present invention.

Fig. 3 is a schematic structural diagram of the integrated hydraulic pump station in the modular main roof equipment for rescue of collapsed roadways in coal mines according to the present invention

FIG. 4 is a schematic structural diagram of a rear support leg module in the modular main roof equipment for rescue of a collapsed roadway in a coal mine according to the present invention.

Fig. 5 is a schematic diagram of a front roof iron assembly module in a modular main roof equipment for rescue of a collapsed roadway of a coal mine according to the present invention.

Reference numerals include:

1-Integrated hydraulic pump station, 2-Electrical control system, 3-Rear support leg module, 4-Connecting bolt assembly, 5-Backrest module, 6-Main top cylinder bracket, 7-Main top cylinder, 8-Front top Iron module, 9-slide, 10-first tool tube, 11-hydraulic balance guide, 12-second tool tube, 13-pipe jacking machine head tube, 14-anchor rod, 15-first guide rail module, 16-2nd rail module, 17-3rd rail module, 18-4th rail module, 19-guide bracket, 20-inclined beam, 21-beam, 22-oil valve block, 23-pressure measuring joint, 24 -Skin accumulator, 25-mechanical pressure gauge, 26-oil pipe, 27-plunger cylinder, 28-pressing wheel, 29-fixed pin assembly, 30-motor, 31-load sensitive variable pump, 32-explosion-proof electric control Load-sensing control valve, 33-hydraulic pump station oil outlet, 34-hydraulic oil tank, 35-rib plate, 36-U-shaped top iron, 37-front top iron support roller.

Detailed ways

In order to make the purpose, technical solution and advantages of the technical solution more clear, the technical solution will be further described in detail below with reference to the specific embodiments. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the technical solution.

Example 1

As shown in Figures 1-5, this embodiment proposes a modular main roof equipment for rescue of collapsed roadway in coal mines, including an integrated hydraulic pump station 1, an electrical control system 2, a rear support component, a main roof cylinder 7 components, a front The top iron module 8, the guide rail module, the hydraulic balance guide 11, the tool pipe and the pipe jacking machine head pipe 13, wherein the integrated hydraulic pump station 1 is connected with the oil cylinder in the main top cylinder 7 assembly through the oil circuit to drive the main top The oil cylinder in the oil cylinder 7 assembly extends or retracts, the guide rail module is set along the jacking position of the expected coal mine collapsed roadway, the rear support assembly is set at the tail section of the guide rail module, and the main top cylinder 7 assembly is set at the front support surface of the rear support assembly , the front top iron module 8 is arranged on the guide rail module, and the cylinder extension end of the main top oil cylinder 7 component is connected to the back of the front top iron module 8, and the entire surface of the front top iron module 8 abuts on the end of the tool tube, the tool tube The front end of the pipe jacking machine is connected to the tail end of the pipe jacking machine head pipe 13, and the tool pipe and the pipe jacking machine head pipe 13 are slidably arranged on the guide rail module; there are several hydraulic balance guides 11, and the hydraulic balance guides 11 are equally spaced The arrangement is such that several hydraulic balance guides 11 form a straight extending channel for positioning the tool tube and the jacking direction of the pipe jacking machine head tube 13 .

Specifically, a modular main roof equipment for coal mine collapse roadway rescue is composed of an integrated hydraulic pump station 1, an electrical control system 2, a rear support leg module 3, a connecting bolt assembly 4, a backrest module 5, and a main roof cylinder 7 modules. , Front top iron module 8, slideway 9, hydraulic balance guide 11, integral guide rail module. The integral rail module includes a first rail module 15 , a second rail module 16 , a third rail module 17 and a fourth rail module 18 . The main top cylinder 7 module includes the main top cylinder bracket 6 and the main top cylinder 7 .

The integrated hydraulic pump station adopts an integrated design, and the electric motor 30 and the electronically controlled explosion-proof load-sensitive variable pump 31 are placed in the hydraulic oil tank 34 to make the integrity stronger. The application of the load-sensitive variable pump 31 and the explosion-proof electronically controlled load-sensitive control valve 32 makes the control precision of the hydraulic action higher, and it is easy to operate and control remotely to ensure the safety of the rescuers.

The rear support assembly includes a rear support leg module 3, a connecting bolt assembly 4 and a rear backrest module 5, wherein the rearrest module 5 is arranged vertically, and one end of the supporting leg module is supported on the back of the rearrest module 5 through the connecting bolt assembly 4, and the supporting leg module The other end is inserted into the ground through the built-in anchor rod 14 to support the back of the backrest module 5 . The rear support leg module 3 adopts an integral box frame structure, with ribs 35 in the middle for support, one side is connected with the backrest module 5 with bolts, and the bottom of the module is anchored with the ground with an anchor rod 14, which greatly reduces the construction amount of the traditional backrest wall. .

The backrest module 5 is in the shape of a rectangular parallelepiped box, and reinforcing ribs are arranged in the middle to increase the rigidity and reduce the weight of the backrest module 5 .

The main top oil cylinder 7 assembly includes several groups of rectangular frame structures and the main top oil cylinder 7. In each group of the main top oil cylinder 7 assembly, the main top oil cylinder 7 is placed in the frame structure, and a plurality of main top oil cylinder 7 assemblies can pass through the frame structure. stacked on top of each other. The main top oil cylinder bracket 6 is processed with a square frame, and the main top oil cylinder 7 is fixed inside the main top oil cylinder bracket 6, and each main top oil cylinder bracket 6 only needs to be stacked together during installation.

The main body of the front top iron module 8 includes a U-shaped top iron 36 and two front top iron supporting rollers 37 , the inner cavity of the U-shaped top iron 36 is opened upward, and the front top iron supporting rollers 37 are respectively arranged on the bottom of the U-shaped top iron 36 . On both sides, the U-shaped top iron 36 is slidably installed on the guide rail module through the front top-iron support roller 37, and the protruding end of the main top oil cylinder 7 assembly and the tail end of the tool tube abut on the two sides of the U-shaped top iron 36 respectively. side face. The front top iron module 8 is composed of a U-shaped top iron with an upper opening and a front top iron roller. The U-shaped top iron is convenient for the external hanging of the slag transport trolley, and the front top iron rollers are convenient for the front top iron module 8 to slide back and forth on the slideway 9 .

The rail module consists of several sections of rails that can be quickly connected. The guide rail module includes a first guide rail module 15, a second guide rail module 16, a third guide rail module 17, and a fourth guide rail module 18. The guide rail module welds the rail and sleeper together to form an integral guide rail. After going down the well, the four guide rail modules are assembled after being transported to the working face as a whole, which reduces the workload on site.

The hydraulic balance guide 11 includes two guide brackets 19, an upper support beam, at least two pressing wheels 28 and an elastic reset device. The two guide brackets 19 are symmetrically arranged on both sides of the guide rail module, and the main body of the upper support beam is "U"-shaped structure, the two free ends of the upper support beam are quickly connected to the top of the guide bracket 19 through the fixed latch assembly 29 respectively, and the pressing wheel 28 is installed on the upper supporting beam through the elastic reset device, so that the pressing wheel The outer peripheral surface of 28 can abut against the outer wall of the tool tube or the head tube 13 of the pipe jacking machine, so that the pressing wheel 28 is pressed and guided to the pushing direction of the tool tube or the head tube 13 of the pipe jacking machine. The hydraulic balance guide 11 is composed of a bladder accumulator 24, a plunger cylinder 27, a pinch wheel 28, a guide bracket 19, an inclined beam 20, an oil circuit valve block 22, a pressure measuring joint 23, a mechanical pressure gauge 25, and an oil pipe 26. , and the fixed plug assembly 29 is composed. The oil circuit valve block 22 , the pressure measuring joint 23 and the mechanical pressure gauge 25 are all arranged on the oil pipe 26 . When installing, it only needs to be hoisted and then fixed with a bolt assembly, which is convenient and convenient to install. The device solves the problems of difficulty in entering the hole and large vibration in the pipe jacking rescue on the collapsed surface.

Preferably, the telescopic direction of the movable part in the elastic reset device passes through the axis of the tool pipe or the head pipe 13 of the pipe jacking machine.

The upper support beam includes a cross beam 21 and two inclined beams 20. The top ends of the two inclined beams 20 are respectively connected to the ends of the cross beam 21. The inclined beam 20 forms a "Y"-shaped structure, the elastic reset device is installed on the inclined beam 20 , and the telescopic direction of the movable part in the elastic reset device is perpendicular to the extension direction of the main body of the inclined beam 20 .

The elastic reset device includes a bladder accumulator 24, an oil pipe 26 and several plunger oil cylinders 27. The cylinder body of the plunger oil cylinder 27 is installed on the upper support beam, and the pressing wheel 28 is installed on the protruding end of the plunger oil cylinder 27. The oil cavity in the cylinder of the plunger cylinder 27 is connected to the bladder accumulator 24 through the oil pipe 26 , and the expansion and contraction impulse of the plunger cylinder 27 is buffered by the bladder accumulator 24 .

Electrical control system 2 adopts explosion-proof design, adopts explosion-proof and intrinsically safe control box and explosion-proof and intrinsically safe control console to realize remote control of main roof device, which is more suitable for explosion-proof requirements in coal mines.

The rear support leg module 3 is fixed on the ground to provide the support and reaction force of the entire main top device; the rear backrest module 5 realizes the uniform distribution of the main top reaction force and makes the rear support leg module 3 evenly stressed; the main top oil cylinder bracket 6 realizes the main The quick installation and fixation of the top oil cylinder 7; the main top oil cylinder 7 drives the front top iron module 8 to move back and forth to realize the jacking of each tool pipe and the rearward movement of the front top iron module 8; the front top iron module 8 is shown in FIG. The top iron support roller 37 rolls back and forth on the guide rail; the first guide rail module 15, the second guide rail module 16, the third guide rail module 17, and the fourth guide rail module 18 support the entire equipment; the hydraulic balance guide 11 is used to prevent the machine head During the jacking process, the pipe is derailed due to excessive vibration or the jacking direction is deviated.

The integrated hydraulic pump station uses the electric motor 30 (model: YB3-180L-4) to drive the load-sensitive variable pump 31 (model: PV032R1K1TINMT1) to provide oil source, and is controlled by an electronically controlled explosion-proof load-sensitive multi-way valve (model: RT-PSV3S1/275 -3) Control to realize the control of the main top cylinder 7. The pump station has a compact structure and adopts load-sensitive control to make the hydraulic system more efficient, and realizes the remote electronic control adjustment of the main top oil cylinder 7.

The working process of the hydraulic balance guide 11 is as follows: when the machine head generates vibration during the hole entry and jacking process, the vibration is transmitted to the pinch wheel 28, and the pinch wheel 28 pushes the plunger cylinder 27 to retract after being pressed, thereby causing the bladder accumulator. The pressure in 24 rises, and after the vibration disappears or weakens, the pressure in the bladder accumulator 24 is released again, pushing the plunger cylinder 27 to extend, and making the pressing wheel 28 press the second tool pipe 12 and the pipe jacking machine again. The head tube 13 has the function of automatic adjustment and compression in the whole working process.

Example 2

A method for assembling a modular main roof equipment for rescue of a collapsed roadway of a coal mine proposed in this embodiment is used to assemble the modular main roof equipment for rescue of a collapsed roadway of a coal mine as proposed in Example 1, including the following steps:

Step 1. Pre-measure the construction site conditions to determine the position of the jacking axis;

Step 2. After lifting and transporting the rear support assembly to a suitable position, anchor the rear support assembly on the ground, arrange the guide rail module at a position close to the backrest module 5, and level the guide rail module, and the rear support assembly is connected by bolts In the rear section of the guide rail module, two main top oil cylinder 7 assemblies are arranged on both sides of the rear backrest module 5 respectively. The rear of the 7 component is close to the front of the backrest module 5;

Step 3. Lift the pipe jacking machine head pipe 13 and the tool pipe to the guide rail module, install the hydraulic balance guide 11 on the outside of the pipe jacking machine head pipe 13 and the tool pipe; connect the integrated hydraulic pump station with the main jacking cylinder 7 , connect the power cable at the electrical control system 2 to the cutting motor inside the head pipe 13 of the pipe jacking machine to complete the preparation for power docking;

Step 4. Start the explosion-proof motor of the integrated hydraulic pump station, use a long pressure measuring line to inject pressure on each bladder accumulator 24 on the hydraulic balance guide 11 in turn, and stop when the mechanical pressure gauge 25 shows the predetermined pressure. Pressurize, remove the pressure measuring line;

Step 5. Control the front and rear movement of the main jacking cylinder 7 through the explosion-proof electronically controlled load-sensing control valve 32 in the integrated hydraulic pump station 1 for debugging operations; start the cutting motor inside the head pipe 13 of the pipe jacking machine to make the head unloaded Run debug.

Specifically, how to perform rapid assembly in the present invention is further described below with reference to FIG. 1 to FIG. 5 . The implementation steps of the assembly method of the modular main roof equipment for the rescue of the collapsed roadway of the coal mine are as follows:

Pre-measure the construction site conditions to determine the position of the jacking axis. Lift the backrest module 5 to a proper position and connect the rear support leg module 3 and the backrest module 5 with the connecting bolt assembly 4 , and then use the anchor rod 14 to anchor the rear support leg module 3 to the ground. The first guide rail module 15 is arranged at a position close to the backrest module 5 . Two main top oil cylinder supports 6 are respectively arranged on the first guide rail module 15 close to both sides of the backrest module 5 . The front top iron module 8 is connected with the connecting bolt assembly 4 in front of the main top oil cylinder bracket 6 , and the rear part is abutted against the end face of the rear backrest module 5 . The second guide rail module 16 , the third guide rail module 17 and the fourth guide rail module 18 are installed in sequence and leveled. Lift the pipe jacking machine head pipe 13 and the second tool pipe 12 to the third guide rail module 17 and the fourth guide rail module 18 . The hydraulic balance guide 11 is installed on the third rail module 17 and the fourth rail module 18 . Lift the first tool tube 10 onto the second guide rail module 16 . Connect the hydraulic pump station oil outlet 33 on the integrated hydraulic pump station with the oil port on the main top cylinder 7 . Connect the power cable at the electrical control system 2 to the cutting motor inside the head pipe 13 of the pipe jacking machine. Start the explosion-proof motor of the integrated hydraulic pump station, and use a long pressure measuring line to inject pressure on each bladder accumulator 24 on the hydraulic balance guide 11 in turn. When the mechanical pressure gauge 25 shows 1Mpa, stop the pressure and remove the pressure gauge. pressure line. Through the explosion-proof electronically controlled load-sensing control valve 32, the main top cylinder 7 is controlled to move back and forth for debugging operations. Start the cutting motor inside the head pipe 13 of the pipe jacking machine to make the head run and debug with no load.

The modularized main roof equipment and assembly method for rescue of collapsed roadway in a coal mine proposed by the present invention solve the problems of traditional pipe jacking equipment that is too large to be transported underground and needs to be poured for the construction of back wall, foundation and front wall by means of modular design. The long-term problem, through the modular assembly method to ensure the rapidity and effectiveness of the rescue construction. First of all, the integrated design of the rear support leg structure is used to replace the traditional pipe jacking machine backrest wall construction, which saves on-site pouring time. Secondly, the integrated hydraulic automatic balance guide is used to realize the direction control of the pipe jacking, reducing the manual operation, and it can be directly assembled on site. Finally, combined with the characteristics of coal mine collapse roadway rescue, the existing pipe jacking equipment is improved and designed to make it more in line with the rapidity, safety, explosion-proof and other characteristics of coal mine rescue construction.

The use of this main roof equipment is not only simple in construction, low in cost, and can greatly improve the speed of rescue construction, but also because the use of modular rapid assembly reduces the professional requirements of construction personnel, which has great popularization.

The above content is only the preferred embodiment of the present invention. For those of ordinary skill in the art, according to the idea of the technical content, many changes can be made in the specific implementation and application scope, as long as these changes do not depart from the concept of the present invention, All belong to the protection scope of this patent.

Claims (10)

1. The utility model provides a colliery is collapsed tunnel rescue and is equipped with modularization owner top which characterized in that: comprises an integrated hydraulic pump station, an electric control system, a rear support component, a main jacking oil cylinder component, a front jacking iron module, a guide rail module, a hydraulic balance guider, a tool pipe and a pipe jacking machine head pipe, wherein the integrated hydraulic pump station is connected with the oil cylinder in the main top oil cylinder assembly through an oil way to drive the oil cylinder in the main top oil cylinder assembly to extend or retract, the guide rail module is arranged along the jacking position of the expected coal mine collapse roadway, the rear support assembly is arranged at the tail section of the guide rail module, the main jacking oil cylinder assembly is arranged at the front supporting surface of the rear support assembly, the front jacking iron module is arranged on the guide rail module, the extending end of an oil cylinder of the main jacking oil cylinder assembly is connected with the back surface of the front jacking iron module, the whole surface of the front jacking iron module abuts against the tail end of the tool pipe, the front end of the tool pipe is butted with the tail end of the pipe head of the pipe jacking machine, and the tool pipe and the pipe head of the pipe jacking machine are slidably arranged on the guide rail module;

the hydraulic balance guider is provided with a plurality of hydraulic balance guiders which are arranged at equal intervals, so that the plurality of hydraulic balance guiders form a linearly extending channel for positioning the jacking direction of the tool pipe and the jacking direction of the head pipe of the pipe jacking machine.

2. The modular main roof equipment for rescuing in the coal mine collapsed roadway as claimed in claim 1, wherein: the back supporting assembly comprises a back supporting leg module, a connecting bolt assembly and a back backrest module, wherein the back backrest module is vertically arranged, one end of the supporting leg module is supported on the back face of the back backrest module through the connecting bolt assembly, the other end of the supporting leg module is inserted into the ground through a built-in anchor rod to play a role in supporting the back face of the back backrest module, and the main top oil cylinder assembly main body is abutted to the front face of the back backrest module.

3. The modular main roof equipment for rescuing in the coal mine collapsed roadway as claimed in claim 1, wherein: the main jacking oil cylinder assembly comprises a plurality of groups of rectangular frame structures and main jacking oil cylinders, wherein in each group of main jacking oil cylinder assembly, the main jacking oil cylinders are placed in the frame structures, and the main jacking oil cylinder assemblies can be stacked mutually through the frame structures.

4. The modular main roof equipment for rescuing in the coal mine collapsed roadway as claimed in claim 1, wherein: the guide rail module is composed of a plurality of sections of guide rails capable of being rapidly butted.

5. The modular main roof equipment for rescuing in the coal mine collapsed roadway as claimed in claim 1, wherein: the hydraulic balance guider comprises two guider supports, an upper supporting beam, at least two pressing wheels and an elastic resetting device, wherein the two guider supports are symmetrically arranged on two sides of a guide rail module, the main body of the upper supporting beam is of a U-shaped structure, two free end parts of the upper supporting beam are respectively and quickly connected to the top ends of the guider supports through fixing bolt assemblies, and the pressing wheels are installed on the upper supporting beam through the elastic resetting device, so that the outer peripheral surfaces of the pressing wheels can abut against the outer wall of a tool pipe or a pipe jacking machine head pipe, and the pressing wheels can press and guide the ejection direction of the tool pipe or the pipe jacking machine head pipe.

6. The modular main roof equipment for rescuing in the coal mine collapsed roadway as claimed in claim 5, wherein: the flexible direction of the movable part in the elastic resetting device passes through the axis of the tool pipe or the pipe jacking machine head pipe.

7. The modular main roof equipment for rescuing in the coal mine collapsed roadway as claimed in claim 5, wherein: go up the supporting beam and include crossbeam and two sloping, two the tip at the crossbeam is connected respectively on the sloping top, and two sloping main parts extend to the oblique lower direction of keeping away from the crossbeam for crossbeam and two sloping constitute "Y" type structure, elasticity resetting means installs on the sloping, and the main part extending direction of the flexible direction perpendicular to sloping of movable part among the elasticity resetting means.

8. The modular main roof equipment for rescuing in the coal mine collapsed roadway as claimed in claim 5, wherein: the elastic reset device comprises a leather bag energy accumulator, an oil pipe and a plurality of plunger oil cylinders, the cylinder bodies of the plunger oil cylinders are arranged on the upper supporting beam, the pinch rollers are arranged at the extending ends of the plunger oil cylinders, and the oil cavities in the cylinder bodies of the plunger oil cylinders are connected with the leather bag energy accumulator through the oil pipe and buffer the stretching impact force of the plunger oil cylinders through the leather bag energy accumulator.

9. The modular main roof equipment for rescuing in the coal mine collapsed roadway as claimed in claim 1, wherein: preceding top iron module main part includes U type top iron and two preceding top iron supporting rollers, and the inside cavity opening of U type top iron is up, preceding top iron supporting roller sets up the both sides in U type top iron bottom respectively, and U type top iron is installed on the guide rail module through preceding top iron supporting roller slidable, and the end that stretches out of main top cylinder subassembly and the tail end of tool tube butt respectively at the both sides terminal surface of U type top iron.

10. An assembling method of modular main roof equipment for rescuing in a collapsed coal mine roadway, which is used for assembling the modular main roof equipment for rescuing in the collapsed coal mine roadway as claimed in any one of claims 1 to 9, and is characterized by comprising the following steps:

step 1, performing early-stage measurement on the condition of a construction site, and determining the position of a jacking axis;

step 2, after the rear support assembly is hoisted to a proper position, the rear support assembly is anchored on the ground, a guide rail module is arranged at a position close to a rear backrest module, and leveling processing is carried out on the guide rail module, the rear support assembly is connected to the rear section of the guide rail module through a bolt, two main jacking oil cylinder assemblies are respectively arranged on two sides of the rear backrest module, the extending ends of oil cylinders in the main jacking oil cylinder assemblies are quickly connected to the back surface of a front jacking iron module through bolts, and the rear parts of the main jacking oil cylinder assemblies are close to the front surface of the rear backrest module;

step 3, lifting the pipe jacking machine head pipe and the tool pipe to the guide rail module, and installing hydraulic balance guides outside the pipe jacking machine head pipe and the tool pipe; connecting the integrated hydraulic pump station with the main jacking oil cylinder, connecting a power cable at the electric control system to a cutting motor inside a head pipe of the pipe jacking machine, and completing power butt joint preparation;

step 4, starting an explosion-proof motor of the integrated hydraulic pump station, sequentially injecting pressure to each leather bag energy accumulator on the hydraulic balance guider by using a long pressure measuring pipeline, stopping pressurizing when a mechanical pressure gauge displays a preset pressure, and removing the pressure measuring pipeline;

step 5, controlling the front and back movement of the main jacking oil cylinder to carry out debugging operation through an explosion-proof electric control load sensitive control valve in the integrated hydraulic pump station; and starting a cutting motor in the head pipe of the pipe jacking machine to enable the head to run and debug in a no-load mode.

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