Advanced support equipment and method based on roadway roof anchor rod walking

Abstract

The application provides an advanced support equipment and method based on roadway roof anchor walking, which comprises a walking device, a displacement compensation device, a hanging lock device and a multi-stage roof turnover device; the hanging lock device is installed in the middle of the hanging plate of the walking device through the displacement compensation device, and the multi-stage roof turnover device is installed in the front of the hanging plate of the walking device through a hydraulic motor; the walking device comprises a first hanging plate, a second hanging plate and a telescopic hydraulic cylinder installed on the hanging plate; the displacement compensation device comprises a transverse displacement compensation device and a longitudinal displacement compensation device; the hanging lock device comprises a pneumatic chuck, a telescopic cylinder and a fixed base; and the multi-stage roof turnover device is composed of three sections of roof turnover plates, a hydraulic motor and an electric winch. The advanced support equipment based on roadway roof anchor walking has a compact structure and complete functions, can realize simultaneous tunneling and supporting, does not interfere with each other, and can realize advanced support for various different size roadways.

Description

Technical Field

[0001] This invention relates to an advanced support device based on the movement of roadway roof anchor bolts, applicable to various roadways of different sizes, and belongs to the technical field of roadway support equipment. Background Technology

[0002] Rapid tunneling in coal mines is one of the most urgently needed technologies in my country's coal mining industry, especially when tunneling is carried out under conditions of fractured surrounding rock. During tunneling in fractured surrounding rock, a series of problems arise, including leakage from the fractured surrounding rock, limited allowable roof control distance due to spalling, poor surface shaping of the surrounding rock, and difficulties in installing support components such as anchors, wire mesh, and cables. Advance support is a tunnel support method that involves tunneling ahead of the working face to ensure stability. However, because transport roadways in coal mining faces typically contain equipment such as transfer machines, crushers, and belt conveyors, the support space within the advance support range is extremely limited, leading to difficulties in advance support.

[0003] Existing advanced support methods have the following drawbacks: 1) Traditional advanced support methods mainly include pipe roofs, small guide pipes, and horizontal jet grouting piles. However, these methods not only suffer from low support strength, high labor intensity for workers, and low support efficiency, but are also difficult to adapt to fractured roadway roofs and roadways with high pressure in the coal mining triangle area. 2) Existing stepping self-moving advanced support hydraulic supports not only occupy a large space, but also have poor adaptability to roadway surrounding rock conditions. 3) Unit-type advanced support hydraulic supports are too heavy to be mechanically transported in the narrow space of the roadway, increasing the labor intensity for workers and raising safety hazards. In summary, due to the limited support space and numerous equipment in the coal mining face transport roadways, advanced support is difficult. There are currently no self-moving advanced support devices with high adaptability to transport roadways, both domestically and internationally, necessitating their development and research. Summary of the Invention

[0004] The purpose of this invention is to provide an advanced support device and method based on the movement of roadway roof anchor bolts. It has a compact structure and can realize advanced support for roadways of various sizes, thereby further improving tunneling efficiency and reducing safety hazards.

[0005] An advanced support device based on the movement of roadway roof anchor bolts includes:

[0006] The traveling device (1) is used to push the advanced support equipment to move along the direction of the roadway anchor bolt arrangement;

[0007] The displacement compensation device (2) is used to adjust the position of the lifting lock device (3) in the roadway and is fixed on the traveling device (1);

[0008] The lifting lock device (3) is used to lock the roadway roof anchor bolts. The lifting lock device (3) is fixed on the displacement compensation device (2).

[0009] A multi-stage tilting top plate device (4) is used to support the anchor net. The multi-stage tilting top plate device (4) is rotatably connected to the front of the walking device (1) via a hydraulic motor.

[0010] Preferably, the walking device (1) includes:

[0011] The primary hoisting plate (1-1) and the secondary hoisting plate (1-2) are arranged along the direction of the roadway anchor bolts, with the secondary hoisting plate (1-2) located in front of the primary hoisting plate (1-1); after the secondary hoisting plate (1-2) moves, the primary hoisting plate (1-1) moves.

[0012] The first-level hanging plate (1-1) includes a first-level middle hanging plate (1-1-1) and first-level two-side hanging plates (1-1-2), which are parallel to the walking direction of the walking device (1). The first-level two-side hanging plates (1-1-2) can move along the side of the first-level middle hanging plate (1-1-1).

[0013] The secondary suspension plate (1-2) includes a secondary intermediate suspension plate (1-2-1) and secondary side suspension plates (1-2-2); parallel to the walking direction of the walking device (1), the secondary side suspension plates (1-2-2) can move along the side of the secondary intermediate suspension plate (1-2-1);

[0014] A centrally mounted hydraulic cylinder (1-4) is used to move the first-stage intermediate lifting plate (1-1-1) and the second-stage intermediate lifting plate (1-2-1). The centrally mounted hydraulic cylinder (1-4) includes two output ends, one of which is hinged to the first-stage intermediate lifting plate (1-1-1) via a cylinder lug (1-5), and the other output end is hinged to the second-stage intermediate lifting plate (1-2-1) via a cylinder lug (1-5).

[0015] Side-mounted hydraulic cylinder (1-3) is used to move the first-stage side-mounted plates (1-1-2) and the second-stage side-mounted plates (1-2-2). The side-mounted hydraulic cylinder (1-3) includes two output ends, one of which is hinged to the first-stage side-mounted plates (1-1-2) through a cylinder lug (1-5), and the other output end is hinged to the second-stage side-mounted plates (1-2-2) through a cylinder lug (1-5).

[0016] Preferably, the multi-stage tilting top plate device (4) includes:

[0017] The primary top plate (4-1) is hinged to the secondary intermediate hanging plate (1-2-1) via the output shaft of the hydraulic motor;

[0018] An electric winch (4-5) is used to provide deflection compensation for the primary roof slab (4-1), the secondary roof slab (4-2), and the tertiary roof slab (4-3). The electric winch (4-5) is fixed to the primary intermediate suspension plate (1-1-1), and the cable on it forms an output end and is connected to the primary roof slab (4-1).

[0019] Preferably, the multi-stage tilting top plate device (4) further includes a secondary top plate (4-2) and a tertiary top plate (4-3), wherein the secondary top plate (4-2) is hinged to the primary top plate (4-1) via the output shaft of a hydraulic motor, and the tertiary top plate (4-3) is hinged to the secondary top plate (4-2) via the output shaft of a hydraulic motor.

[0020] Preferably, the displacement compensation device (2) is fixedly installed on the first-stage hanging plate (1-1) and the second-stage hanging plate (1-2), respectively, including a lateral displacement compensation device (2-1) and a longitudinal displacement compensation device (2-2).

[0021] The lateral displacement compensation device (2-1) includes a lateral displacement compensation base (2-1-1), a lateral displacement compensation ball screw (2-1-2), a lateral displacement compensation motor (2-1-3), and a lateral displacement compensation platform (2-1-4).

[0022] The lateral displacement compensation motor (2-1-3) and the lateral displacement compensation ball screw (2-1-2) are both mounted on the lateral displacement compensation base (2-1-1). The lateral displacement compensation motor (2-1-3) is used to drive the lateral displacement compensation ball screw (2-1-2) to rotate. The lateral displacement compensation stage (2-1-4) and the lateral displacement compensation ball screw (2-1-2) form a ball screw pair.

[0023] The longitudinal displacement compensation device (2-2) includes a longitudinal displacement compensation base (2-2-1), a longitudinal displacement compensation ball screw (2-2-2), a longitudinal displacement compensation motor (2-2-3), and a longitudinal displacement compensation platform (2-2-4).

[0024] The longitudinal displacement compensation base (2-2-1) is fixed to the transverse displacement compensation platform (2-1-4); the longitudinal displacement compensation ball screw (2-2-2) and the longitudinal displacement compensation motor (2-2-3) are both set on the longitudinal displacement compensation base (2-2-1), the longitudinal displacement compensation motor (2-2-3) is used to drive the longitudinal displacement compensation ball screw (2-2-2) to rotate, the longitudinal displacement compensation platform (2-2-4) and the longitudinal displacement compensation ball screw (2-2-2) form a ball screw pair; the lifting lock device (3) is set on the longitudinal displacement compensation platform (2-2-4).

[0025] Preferably, the lifting lock device (3) includes a pneumatic chuck (3-1), a telescopic cylinder (3-2), and a fixed base (3-3).

[0026] The pneumatic chuck (3-1) is fixedly mounted on the piston rod of the telescopic cylinder (3-2); the telescopic cylinder (3-2) is fixedly mounted on the fixed base (3-3); the fixed base (3-3) is mounted on the longitudinal displacement compensation platform (2-2-4).

[0027] A method for advance support based on the movement of roadway roof anchor bolts, wherein when the advance support equipment is in advance support working state, the telescopic cylinder (3-2) extends, the pneumatic chuck (3-1) locks the roadway roof anchor bolts, the side hydraulic cylinder (1-3) and the central hydraulic cylinder (1-4) retract, and the primary roof (4-1), secondary roof (4-2) and tertiary roof (4-3) are in a horizontally extended state; when the advance support equipment finishes the support work at the current position and is ready to complete the support work at the next position, the following steps are included:

[0028] (a) The three-stage roof plate (4-3), the two-stage roof plate (4-2), and the first-stage roof plate (4-1) rotate sequentially under the action of the hydraulic motor (4-4) until the three roof plates flip and retract to the designated position;

[0029] (b) Lifting lock device on the secondary intermediate lifting plate (1-2-1) (3) Release the anchor rod: the pneumatic chuck (3-1) releases the anchor rod, and the telescopic cylinder (3-2) retracts to the designated position;

[0030] Then the centrally mounted hydraulic cylinder (1-4) is activated, pushing the secondary intermediate lifting plate (1-2-1) to move to the next support position;

[0031] Finally, the displacement compensation device (2) on the secondary intermediate hanging plate (1-2-1) is activated to adjust the position of the pneumatic chuck (3-1) on the secondary intermediate hanging plate (1-2-1) so that it is coaxial with the corresponding anchor rod;

[0032] (c) Re-locking the anchor rods by the lifting lock device (3) on the secondary intermediate hanging plate (1-2-1): The telescopic cylinder (3-2) of the secondary intermediate hanging plate (1-2-1) extends to the designated position, and the pneumatic chuck (3-1) locks the corresponding anchor rods;

[0033] Then the lifting lock device (3) on the two side hanging plates (1-2-2) of the secondary stage releases the anchor rod: the pneumatic chuck (3-1) on the two side hanging plates (1-2-2) of the secondary stage releases the anchor rod, and the telescopic cylinder (3-2) retracts to the designated position;

[0034] (d) The side-mounted hydraulic cylinder (1-3) is activated, pushing the two side hanging plates (1-2-2) of the secondary stage to move along the slot on the middle hanging plate (1-2-1) of the secondary stage to the next support position;

[0035] Then the displacement compensation device (2) on the two side hanging plates (1-2-2) of the secondary stage is activated, and the position of the pneumatic chuck (3-1) on the two side hanging plates (1-2-2) of the secondary stage is adjusted so that it is coaxial with the corresponding anchor rod.

[0036] Finally, the anchor bolts are re-locked by the locking device (3) on the two side hanging plates (1-2-2) of the second stage: the telescopic cylinder (3-2) extends to the designated position and the pneumatic chuck (3-1) locks the corresponding anchor bolts;

[0037] (e) The lifting lock device on the first-level intermediate hanging plate (1-1-1) (3) releases the anchor rod: the pneumatic chuck (3-1) releases the anchor rod, and the telescopic cylinder (3-2) retracts to the designated position;

[0038] Then the centrally mounted hydraulic cylinder (1-4) is activated, pushing the first-stage intermediate lifting plate (1-1-1) to move to the next support position;

[0039] The displacement compensation device (2) on the last intermediate suspension plate (1-1-1) is activated to adjust the position of the pneumatic chuck (3-1) on the first intermediate suspension plate (1-1-1) so that it is coaxial with the corresponding anchor rod.

[0040] (f) The lifting lock device (3) on the first-level intermediate hanging plate (1-1-1) re-locks the anchor rod: the telescopic cylinder (3-2) extends to the designated position, and the pneumatic chuck (3-1) locks the corresponding anchor rod;

[0041] Then the pneumatic chuck (3-1) on the two side suspension plates (1-1-2) of the first stage releases the anchor rod, and the telescopic cylinder (3-2) retracts to the designated position;

[0042] (g) When the side-mounted hydraulic cylinder (1-3) is activated, it pushes the two side hanging plates (1-1-2) of the first stage to move along the slot on the middle hanging plate (1-1-1) of the first stage to the next support position;

[0043] Then the displacement compensation device (2) on the two side hanging plates (1-1-2) of the first stage is activated, and the position of the pneumatic chuck (3-1) on the two side hanging plates (1-1-2) of the first stage is adjusted so that it is coaxial with the corresponding anchor rod.

[0044] The anchor bolts are re-locked by the lifting lock device (3) on the two side hanging plates (1-1-2) of the last level: the telescopic cylinder (3-2) extends to the designated position and the pneumatic chuck (3-1) locks the corresponding anchor bolts;

[0045] (h) The construction workers hang the anchor net on the hanging position on the first-level top plate (4-1). The hydraulic motor (4-4) is activated, driving the first-level top plate (4-1), the second-level top plate (4-2), and the third-level top plate (4-3) to flip to the horizontal position in sequence.

[0046] Compared with the prior art, the advantages of the present invention are:

[0047] (1) By setting up a walking device, a displacement compensation device, a lifting lock device, and a multi-stage roof tilting device, the existing support anchors on the top of the roadway are effectively utilized, and the advanced support equipment is placed on the top of the roadway as a whole through the lifting lock device, avoiding the difficulties in roadway support caused by a large number of roadway equipment and a small support space. Therefore, the equipment has high adaptability to roadways and occupies little space.

[0048] (2) The multi-stage roof flipping device achieves roof flipping through a hydraulic motor, which solves the problems of difficulty in connecting the anchor bolts during the laying of the anchor net in the advanced support equipment for the roadway roof. Moreover, the multi-stage roof flipping device effectively increases the overall support area of ​​the advanced support. Attached Figure Description

[0049] Figure 1 This is a diagram showing the retraction state of an advanced support device based on the movement of roadway roof anchor bolts according to an embodiment of the present invention.

[0050] Figure 2 for Figure 1 Another perspective view;

[0051] Figure 3 This is a diagram showing the horizontal extension state of an advanced support device based on the movement of roadway roof anchor bolts according to an embodiment of the present invention.

[0052] Figure 4 A three-dimensional view of the displacement compensation device;

[0053] Figure 5 A three-dimensional view of the suspension lock device;

[0054] Figure 6 This is a signal connection diagram for advanced support equipment that moves based on the rock bolts on the tunnel roof.

[0055] In the diagram: 1. Traveling device, 1-1. Primary suspension plate, 1-1-1. Primary intermediate suspension plate, 1-1-2. Primary side suspension plates, 1-2. Secondary suspension plate, 1-2-1. Secondary intermediate suspension plate, 1-2-2. Secondary side suspension plates, 1-3. Side-mounted hydraulic cylinder, 1-4. Centrally mounted hydraulic cylinder, 1-5. Cylinder lug; 2. Displacement compensation device, 2-1. Lateral displacement compensation device, 2-1-1. Lateral displacement compensation base, 2-1-2. Lateral displacement compensation ball screw, 2-1-3. Lateral displacement compensation motor, 2- 1-4. Lateral displacement compensation platform; 2-2. Longitudinal displacement compensation device; 2-2-1. Longitudinal displacement compensation base; 2-2-2. Longitudinal displacement compensation ball screw; 2-2-3. Longitudinal displacement compensation motor; 2-2-4. Longitudinal displacement compensation platform; 3. Lifting lock device; 3-1. Pneumatic chuck; 3-2. Telescopic cylinder; 3-3. Fixed base; 4. Multi-stage tilting top plate device; 4-1. First-stage top plate; 4-2. Second-stage top plate; 4-3. Third-stage top plate; 4-4. Hydraulic motor; 4-5. Electric winch. Detailed Implementation

[0056] The following will describe in more detail the advanced support device and method based on the movement of roadway roof anchor bolts according to the present invention, with reference to the schematic diagrams, which illustrate preferred embodiments of the invention. It should be understood that those skilled in the art can modify the invention described herein while still achieving the advantageous effects of the invention. Therefore, the following description should be understood as being of general knowledge to those skilled in the art and is not intended to limit the invention.

[0057] Figures 1-6 This is an advanced support device based on the movement of roadway roof anchor bolts. The device includes a traveling device 1, a displacement compensation device 2, a lifting lock device 3, and a multi-stage roof tilting device 4. The lifting lock device 3 is installed in the middle of the suspended plate of the traveling device 1 via the displacement compensation device 2, and the multi-stage roof tilting device 4 is installed in front of the suspended plate of the traveling device 1 via a hydraulic motor 4-4.

[0058] In this embodiment, the direction of movement of the walking device 1 is defined as the "forward" direction. Taking the positional relationship between the secondary suspended platform 1-2 and the primary suspended platform 1-1 as an example, the secondary suspended platform 1-2 is located in front of the primary suspended platform 1-1.

[0059] In this embodiment, "lateral" refers to the direction of travel parallel to the walking device 1.

[0060] The traveling device 1 is used to propel the advanced support equipment to move along the direction of the roadway anchor bolt arrangement.

[0061] The traveling device 1 includes: a primary suspension plate 1-1, a secondary suspension plate 1-2, and multiple hydraulic cylinders.

[0062] The primary hoisting plate 1-1 and the secondary hoisting plate 1-2 are arranged along the direction of the roadway anchor bolts, with the secondary hoisting plate 1-2 located in front of the primary hoisting plate 1-1; after the secondary hoisting plate 1-2 moves, the primary hoisting plate 1-1 moves.

[0063] The primary suspension plate 1-1 includes a primary intermediate suspension plate 1-1-1 and primary two side suspension plates 1-1-2, which are parallel to the traveling direction of the traveling device 1. The primary two side suspension plates 1-1-2 can move along the side of the primary intermediate suspension plate 1-1-1.

[0064] The secondary suspension plate 1-2 includes a secondary intermediate suspension plate 1-2-1 and secondary side suspension plates 1-2-2; parallel to the traveling direction of the traveling device 1, the secondary side suspension plates 1-2-2 can move along the side of the secondary intermediate suspension plate 1-2-1.

[0065] The centrally mounted hydraulic cylinder 1-4 is used to move the first-stage intermediate lifting plate 1-1-1 and the second-stage intermediate lifting plate 1-2-1. The centrally mounted hydraulic cylinder 1-4 includes two output ends, one of which is hinged to the first-stage intermediate lifting plate 1-1-1 through the cylinder lug 1-5, and the other output end is hinged to the second-stage intermediate lifting plate 1-2-1 through the cylinder lug 1-5.

[0066] A side-mounted hydraulic cylinder 1-3 is used to move the primary side-mounted lifting plates 1-1-2 and the secondary side-mounted lifting plates 1-2-2. The side-mounted hydraulic cylinder 1-3 includes two output ends, one of which is hinged to the primary side-mounted lifting plates 1-1-2 via a cylinder lug 1-5, and the other output end is hinged to the secondary side-mounted lifting plates 1-2-2 via a cylinder lug 1-5. The cylinder lug 1-5 is fixedly installed on the primary lifting plate 1-1 and the secondary lifting plate 1-2, respectively.

[0067] Displacement compensation device 2 is fixedly installed on the first-stage hanging plate 1-1 and the second-stage hanging plate 1-2 respectively, including lateral displacement compensation device 2-1 and longitudinal displacement compensation device 2-2;

[0068] Lateral displacement compensation device 2-1, displacement compensation device 2, is used to adjust the position of the suspension lock device 3 in the roadway and is fixed on the traveling device 1.

[0069] The lateral displacement compensation device 2-1 includes a lateral displacement compensation base 2-1-1, a lateral displacement compensation ball screw 2-1-2, a lateral displacement compensation motor 2-1-3, and a lateral displacement compensation platform 2-1-4.

[0070] The lateral displacement compensation motor 2-1-3 and the lateral displacement compensation ball screw 2-1-2 are both installed on the lateral displacement compensation base 2-1-1. The lateral displacement compensation motor 2-1-3 is used to drive the lateral displacement compensation ball screw 2-1-2 to rotate. The lateral displacement compensation platform 2-1-4 and the lateral displacement compensation ball screw 2-1-2 form a ball screw pair.

[0071] The longitudinal displacement compensation device 2-2 includes a longitudinal displacement compensation base 2-2-1, a longitudinal displacement compensation ball screw 2-2-2, a longitudinal displacement compensation motor 2-2-3, and a longitudinal displacement compensation platform 2-2-4.

[0072] The longitudinal displacement compensation base 2-2-1 is fixed to the transverse displacement compensation platform 2-1-4; the longitudinal displacement compensation ball screw 2-2-2 and the longitudinal displacement compensation motor 2-2-3 are both set on the longitudinal displacement compensation base 2-2-1. The longitudinal displacement compensation motor 2-2-3 is used to drive the longitudinal displacement compensation ball screw 2-2-2 to rotate. The longitudinal displacement compensation platform 2-2-4 and the longitudinal displacement compensation ball screw 2-2-2 form a ball screw pair; the lifting lock device 3 is set on the longitudinal displacement compensation platform 2-2-4.

[0073] The lifting lock device 3 is used to lock the anchor bolts on the roof of the roadway. The lifting lock device 3 is fixed on the displacement compensation device 2.

[0074] The lifting lock device 3 includes a pneumatic chuck 3-1, a telescopic cylinder 3-2, and a fixed base 3-3.

[0075] The pneumatic chuck 3-1 is fixedly mounted on the piston rod of the telescopic cylinder 3-2; the telescopic cylinder 3-2 is fixedly mounted on the fixed base 3-3; the fixed base 3-3 is mounted on the longitudinal displacement compensation platform 2-2-4.

[0076] The multi-stage tilting top plate device 4 is used to support the anchor net. The multi-stage tilting top plate device 4 is rotatably connected to the front of the traveling device 1 via hydraulic motors.

[0077] The multi-stage tilting roof device 4 includes a primary roof 4-1, a secondary roof 4-2, a tertiary roof 4-3, a hydraulic motor 4-4, and an electric winch 4-5.

[0078] The primary top plate 4-1 is hinged to the secondary intermediate hanging plate 1-2-1 via the output shaft of a hydraulic motor. Taking the hydraulic motor between the primary top plate 4-1 and the secondary intermediate hanging plate 1-2-1 as an example, the hydraulic motor at this location is fixed to the primary top plate 4-1.

[0079] The electric winch 4-5 is used to provide deflection compensation for the primary roof slab 4-1, the secondary roof slab 4-2 and the tertiary roof slab 4-3. The electric winch 4-5 is fixed to the primary intermediate suspension plate 1-1-1, and the cable on it forms an output end and is connected to the primary roof slab 4-1.

[0080] The secondary roof plate 4-2 is hinged to the primary roof plate 4-1 via the output shaft of a hydraulic motor, and the tertiary roof plate 4-3 is hinged to the secondary roof plate 4-2 via the output shaft of a hydraulic motor. The hydraulic motor between the secondary roof plate 4-2 and the primary roof plate 4-1 is fixed to the tertiary roof plate 4-2. The hydraulic motor between the tertiary roof plate 4-3 and the secondary roof plate 4-2 is fixed to the tertiary roof plate 4-3.

[0081] When the advanced support equipment is in the advanced support working state, all telescopic cylinders 3-2 extend, pneumatic chucks 3-1 lock the roadway roof anchor bolts, and side hydraulic cylinders 1-3 and center hydraulic cylinders 1-4 retract. The primary roof 4-1, secondary roof 4-2, and tertiary roof 4-3 are in a horizontally extended state. At this time, the primary hoisting plate 1-1 is in close contact with the secondary roof 1-2, that is, the primary side hoisting plates 1-1-2 are in contact with the secondary side hoisting plates 1-2-2 on the same side, and the primary intermediate hoisting plate 1-1-1 is in contact with the secondary intermediate hoisting plate 1-2-1 on the same side; the primary side hoisting plates 1-1-2 are aligned with the primary intermediate hoisting plate 1-1-1, and the secondary side hoisting plates 1-2-2 are aligned with the secondary intermediate hoisting plate 1-2-1.

[0082] When the advanced support equipment finishes supporting the current position and is ready to complete supporting the next position, the following steps are included:

[0083] (a) The third-stage roof plate 4-3, the second-stage roof plate 4-2, and the first-stage roof plate 4-1 rotate sequentially under the action of the electric winch 4-5 and the hydraulic motor 4-4 until the three roof plates flip and retract to the designated position. During the retraction process, the electric winch 4-5 acts first to loosen the cable, and then the hydraulic motor drives the roof plates to flip and retract.

[0084] (b) The lifting lock device 3 on the secondary intermediate hanging plate 1-2-1 releases the anchor rod: the pneumatic chuck 3-1 releases the anchor rod, and the telescopic cylinder 3-2 retracts to the designated position;

[0085] Then, the centrally mounted hydraulic cylinder 1-4 is activated, pushing the secondary intermediate lifting plate 1-2-1 to move to the next support position.

[0086] Finally, the displacement compensation device 2 on the secondary intermediate hanging plate 1-2-1 is activated to adjust the position of the pneumatic chuck 3-1 on the secondary intermediate hanging plate 1-2-1 so that it is coaxial with the corresponding anchor rod.

[0087] (c) The lifting lock device 3 on the secondary intermediate hanging plate 1-2-1 relocks the anchor rod: the telescopic cylinder 3-2 of the secondary intermediate hanging plate 1-2-1 extends to the designated position, and the pneumatic chuck 3-1 locks the corresponding anchor rod.

[0088] Then, the lifting lock device 3 on the two side hanging plates 1-2-2 of the secondary stage releases the anchor rod: the pneumatic chuck 3-1 on the two side hanging plates 1-2-2 of the secondary stage releases the anchor rod, and the telescopic cylinder 3-2 retracts to the designated position.

[0089] (d) When the side-mounted oil cylinder 1-3 is activated, it pushes the two side hanging plates 1-2-2 of the secondary stage to move along the slot on the middle hanging plate 1-2-1 of the secondary stage to the next support position.

[0090] Then the displacement compensation device 2 on the two side hanging plates 1-2-2 of the secondary stage is activated, adjusting the position of the pneumatic chuck 3-1 on the two side hanging plates 1-2-2 of the secondary stage so that it is coaxial with the corresponding anchor rod.

[0091] Finally, the anchor bolts are re-locked by the locking devices 3 on the two side suspension plates 1-2-2 of the second stage: the telescopic cylinder 3-2 extends to the designated position, and the pneumatic chuck 3-1 locks the corresponding anchor bolts.

[0092] (e) The anchor bolt is released by the lifting lock device 3 on the first-level intermediate hanging plate 1-1-1: the pneumatic chuck 3-1 releases the anchor bolt, and the telescopic cylinder 3-2 retracts to the designated position.

[0093] Then, the centrally mounted hydraulic cylinder 1-4 is activated, pushing the first-stage intermediate lifting plate 1-1-1 to move to the next support position.

[0094] The displacement compensation device 2 on the last intermediate suspension plate 1-1-1 is activated to adjust the position of the pneumatic chuck 3-1 on the first intermediate suspension plate 1-1-1, so that it is coaxial with the corresponding anchor rod.

[0095] (f) The anchor bolt is re-locked by the lifting lock device 3 on the first-level intermediate hanging plate 1-1-1: the telescopic cylinder 3-2 extends to the designated position and the pneumatic chuck 3-1 locks the corresponding anchor bolt.

[0096] Then, the pneumatic chuck 3-1 on the two side hanging plates 1-1-2 of the first stage releases the anchor rod, and the telescopic cylinder 3-2 retracts to the designated position.

[0097] (g) When the side cylinder 1-3 is activated, it pushes the two side hanging plates 1-1-2 of the first stage to move along the slot on the middle hanging plate 1-1-1 of the first stage to the next support position.

[0098] Then, the displacement compensation device 2 on the two side hanging plates 1-1-2 of the first stage is activated, adjusting the position of the pneumatic chuck 3-1 on the two side hanging plates 1-1-2 of the first stage so that it is coaxial with the corresponding anchor rod.

[0099] The anchor bolts are re-locked by the locking devices 3 on the two side suspension plates 1-1-2 of the last stage: the telescopic cylinder 3-2 extends to the designated position, and the pneumatic chuck 3-1 locks the corresponding anchor bolts.

[0100] (h) The construction workers hang the anchor net on the hanging position of the first-level roof plate 4-1. The hydraulic motor 4-4 drives the first-level roof plate 4-1, the second-level roof plate 4-2 and the third-level roof plate 4-3 to rotate to the horizontal position in sequence. If the roof plate falls, the electric winch 4-5 will then operate to tighten the cable, thereby raising the roof plate within a small range. That is, the electric winch 4-5 provides a certain deflection compensation for the three sections of the rotated roof plate.

[0101] The above are merely preferred embodiments of the present invention and do not constitute any limitation on the present invention. Any equivalent substitutions or modifications made by those skilled in the art to the technical solutions and content disclosed in the present invention without departing from the scope of the present invention shall be deemed to have remained within the protection scope of the present invention.

Claims

1. A pre-support device based on the movement of roadway roof anchor bolts, characterized in that, include: The traveling device (1) is used to push the advanced support equipment to move along the direction of the roadway anchor bolt arrangement; The displacement compensation device (2) is used to adjust the position of the lifting lock device (3) in the roadway and is fixed on the traveling device (1); The lifting lock device (3) is used to lock the roadway roof anchor bolts. The lifting lock device (3) is fixed on the displacement compensation device (2). A multi-stage tilting top plate device (4) is used to support the anchor net. The multi-stage tilting top plate device (4) is rotatably connected to the front of the walking device (1) through a hydraulic motor. The walking device (1) includes: The primary hoisting plate (1-1) and the secondary hoisting plate (1-2) are arranged along the direction of the roadway anchor bolts, with the secondary hoisting plate (1-2) located in front of the primary hoisting plate (1-1); after the secondary hoisting plate (1-2) moves, the primary hoisting plate (1-1) moves. The first-level hanging plate (1-1) includes a first-level middle hanging plate (1-1-1) and first-level two-side hanging plates (1-1-2), which are parallel to the walking direction of the walking device (1). The first-level two-side hanging plates (1-1-2) can move along the side of the first-level middle hanging plate (1-1-1). The secondary suspension plate (1-2) includes a secondary intermediate suspension plate (1-2-1) and secondary side suspension plates (1-2-2); parallel to the walking direction of the walking device (1), the secondary side suspension plates (1-2-2) can move along the side of the secondary intermediate suspension plate (1-2-1); A centrally mounted hydraulic cylinder (1-4) is used to move the first-stage intermediate lifting plate (1-1-1) and the second-stage intermediate lifting plate (1-2-1). The centrally mounted hydraulic cylinder (1-4) includes two output ends, one of which is hinged to the first-stage intermediate lifting plate (1-1-1) via a cylinder lug (1-5), and the other output end is hinged to the second-stage intermediate lifting plate (1-2-1) via a cylinder lug (1-5). Side-mounted hydraulic cylinder (1-3) is used to move the first-stage side-mounted plates (1-1-2) and the second-stage side-mounted plates (1-2-2). The side-mounted hydraulic cylinder (1-3) includes two output ends, one of which is hinged to the first-stage side-mounted plates (1-1-2) through a cylinder lug (1-5), and the other output end is hinged to the second-stage side-mounted plates (1-2-2) through a cylinder lug (1-5). The multi-stage tilting top plate device (4) includes: The primary top plate (4-1) is hinged to the secondary intermediate hanging plate (1-2-1) via the output shaft of the hydraulic motor; An electric winch (4-5) is used to provide deflection compensation for the primary roof slab (4-1), the secondary roof slab (4-2), and the tertiary roof slab (4-3). The electric winch (4-5) is fixed to the primary intermediate suspension plate (1-1-1), and the cable on it forms an output end and is connected to the primary roof slab (4-1).

2. The advanced support equipment based on the movement of roadway roof anchor bolts according to claim 1, characterized in that, The multi-stage tilting top plate device (4) further includes a secondary top plate (4-2) and a tertiary top plate (4-3). The secondary top plate (4-2) is hinged to the primary top plate (4-1) via the output shaft of a hydraulic motor, and the tertiary top plate (4-3) is hinged to the secondary top plate (4-2) via the output shaft of a hydraulic motor.

3. The advanced support equipment based on the movement of roadway roof anchor bolts according to claim 1, characterized in that, The displacement compensation device (2) is fixedly installed on the first-level hanging plate (1-1) and the second-level hanging plate (1-2), respectively, including a lateral displacement compensation device (2-1) and a longitudinal displacement compensation device (2-2). The lateral displacement compensation device (2-1) includes a lateral displacement compensation base (2-1-1), a lateral displacement compensation ball screw (2-1-2), a lateral displacement compensation motor (2-1-3), and a lateral displacement compensation platform (2-1-4). The lateral displacement compensation motor (2-1-3) and the lateral displacement compensation ball screw (2-1-2) are both mounted on the lateral displacement compensation base (2-1-1). The lateral displacement compensation motor (2-1-3) is used to drive the lateral displacement compensation ball screw (2-1-2) to rotate. The lateral displacement compensation stage (2-1-4) and the lateral displacement compensation ball screw (2-1-2) form a ball screw pair. The longitudinal displacement compensation device (2-2) includes a longitudinal displacement compensation base (2-2-1), a longitudinal displacement compensation ball screw (2-2-2), a longitudinal displacement compensation motor (2-2-3), and a longitudinal displacement compensation platform (2-2-4). The longitudinal displacement compensation base (2-2-1) is fixed to the transverse displacement compensation platform (2-1-4); the longitudinal displacement compensation ball screw (2-2-2) and the longitudinal displacement compensation motor (2-2-3) are both set on the longitudinal displacement compensation base (2-2-1), the longitudinal displacement compensation motor (2-2-3) is used to drive the longitudinal displacement compensation ball screw (2-2-2) to rotate, the longitudinal displacement compensation platform (2-2-4) and the longitudinal displacement compensation ball screw (2-2-2) form a ball screw pair; the lifting lock device (3) is set on the longitudinal displacement compensation platform (2-2-4).

4. The advanced support equipment based on the movement of roadway roof anchor bolts according to claim 3, characterized in that, The lifting lock device (3) includes a pneumatic chuck (3-1), a telescopic cylinder (3-2), and a fixed base (3-3); The pneumatic chuck (3-1) is fixedly mounted on the piston rod of the telescopic cylinder (3-2); the telescopic cylinder (3-2) is fixedly mounted on the fixed base (3-3); the fixed base (3-3) is mounted on the longitudinal displacement compensation platform (2-2-4).

5. A method for advance support using the advance support equipment based on the movement of roadway roof anchor bolts as described in any one of claims 1-4, characterized in that, When the advanced support equipment is in the advanced support working state, the telescopic cylinder (3-2) extends, the pneumatic chuck (3-1) locks the roadway roof anchor bolts, the side hydraulic cylinder (1-3) and the central hydraulic cylinder (1-4) retract, and the primary roof (4-1), secondary roof (4-2) and tertiary roof (4-3) are in a horizontally extended state; when the advanced support equipment finishes the support work at the current position and is ready to complete the support work at the next position, the following steps are included: (a) The three-stage roof plate (4-3), the two-stage roof plate (4-2), and the first-stage roof plate (4-1) rotate sequentially under the action of the hydraulic motor (4-4) until the three roof plates flip and retract to the designated position; (b) Lifting lock device on the secondary intermediate lifting plate (1-2-1) (3) Release the anchor rod: the pneumatic chuck (3-1) releases the anchor rod, and the telescopic cylinder (3-2) retracts to the designated position; Then the central hydraulic cylinder (1-4) is activated, pushing the secondary intermediate lifting plate (1-2-1) to move to the next support position; Finally, the displacement compensation device (2) on the secondary intermediate hanging plate (1-2-1) is activated to adjust the position of the pneumatic chuck (3-1) on the secondary intermediate hanging plate (1-2-1) so that it is coaxial with the corresponding anchor rod; (c) Re-locking the anchor rods by the lifting lock device (3) on the secondary intermediate hanging plate (1-2-1): The telescopic cylinder (3-2) of the secondary intermediate hanging plate (1-2-1) extends to the designated position, and the pneumatic chuck (3-1) locks the corresponding anchor rods; Then the lifting lock device (3) on the two side hanging plates (1-2-2) of the secondary stage releases the anchor rod: the pneumatic chuck (3-1) on the two side hanging plates (1-2-2) of the secondary stage releases the anchor rod, and the telescopic cylinder (3-2) retracts to the designated position; (d) The side-mounted hydraulic cylinder (1-3) is activated, pushing the two side hanging plates (1-2-2) of the secondary stage to move along the slot on the middle hanging plate (1-2-1) of the secondary stage to the next support position; Then the displacement compensation device (2) on the two side hanging plates (1-2-2) of the secondary stage is activated, and the position of the pneumatic chuck (3-1) on the two side hanging plates (1-2-2) of the secondary stage is adjusted so that it is coaxial with the corresponding anchor rod. Finally, the anchor bolts are re-locked by the locking device (3) on the two side hanging plates (1-2-2) of the second stage: the telescopic cylinder (3-2) extends to the designated position and the pneumatic chuck (3-1) locks the corresponding anchor bolts; (e) The lifting lock device on the first-level intermediate hanging plate (1-1-1) (3) releases the anchor rod: the pneumatic chuck (3-1) releases the anchor rod, and the telescopic cylinder (3-2) retracts to the designated position; Then the central hydraulic cylinder (1-4) is activated, pushing the first-stage intermediate lifting plate (1-1-1) to move to the next support position; The displacement compensation device (2) on the last intermediate suspension plate (1-1-1) is activated to adjust the position of the pneumatic chuck (3-1) on the first intermediate suspension plate (1-1-1) so that it is coaxial with the corresponding anchor rod. (f) The lifting lock device (3) on the first-level intermediate hanging plate (1-1-1) re-locks the anchor rod: the telescopic cylinder (3-2) extends to the designated position, and the pneumatic chuck (3-1) locks the corresponding anchor rod; Then the pneumatic chuck (3-1) on the two side suspension plates (1-1-2) of the first stage releases the anchor rod, and the telescopic cylinder (3-2) retracts to the designated position; (g) The side hydraulic cylinder (1-3) is activated, pushing the two side hanging plates (1-1-2) of the first stage to move along the slot on the middle hanging plate (1-1-1) of the first stage to the next support position; Then the displacement compensation device (2) on the two side hanging plates (1-1-2) of the first stage is activated, and the position of the pneumatic chuck (3-1) on the two side hanging plates (1-1-2) of the first stage is adjusted so that it is coaxial with the corresponding anchor rod. The anchor bolts are re-locked by the lifting lock device (3) on the two side hanging plates (1-1-2) of the last level: the telescopic cylinder (3-2) extends to the designated position and the pneumatic chuck (3-1) locks the corresponding anchor bolts; (h) The construction workers hang the anchor net on the hanging position on the first-level top plate (4-1). The hydraulic motor (4-4) is activated, driving the first-level top plate (4-1), the second-level top plate (4-2), and the third-level top plate (4-3) to flip to the horizontal position in sequence.

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