Complete set of equipment for non-repeated support in coal mine roadways and handling method of single-span support device

Abstract

The present invention provides a complete set of equipment for non-repeated support in coal mine roadways and a handling method for a single-span support device, belonging to the technical field of underground support in coal mines. The equipment includes a single-span support device and a support device transporter. The single-span support device includes a cross beam and telescopic columns arranged at both ends of the cross beam. The telescopic columns can rotate inward and outward with respect to the cross beam. The support device transporter includes a vehicle frame, a traveling device arranged below the vehicle frame, a lifting device arranged above the vehicle frame, and a rotary clamping device installed on the lifting device. Guide wheels are arranged at the diagonal positions of the vehicle frame, and the axle of the guide wheel is arranged in the vertical direction. The space along the length direction of the support device transporter and outside the guide wheels is the accommodation space for the telescopic columns. This equipment can avoid the problem of eccentric imbalance during rotation. When the body widths are equal, the support device transporter in this equipment can effectively avoid collisions of the single-span support device during handling.

Description

Technical Field

[0001] The invention belongs to the technical field of underground support in coal mines, and particularly discloses a complete set of equipment for non-repeated support in coal mine roadways and a handling method for a single-span support device. Background Art

[0002] At present, the structural types of the forward support in the fully mechanized coal mining face gateway in domestic coal mines are mainly the integral stepping type and the split stepping type. These two types of forward supports have relatively high requirements for the roadway roof conditions. During actual use, the supports repeatedly support the roadway roof, accelerating the damage to the roof to varying degrees. To solve the above problems, a support type without repeated support must be considered. The applicant developed CN201711444418.1 - a complete set of equipment for non-repeated support in the return air gateway of a coal mine, including a single-span support device and a handling vehicle for the gateway support device. The single-span support device includes a cross beam and telescopic columns. The handling vehicle for the gateway support device includes a trackless explosion-proof rubber-tyred vehicle, a lifting platform, and a rotating clamping device. The rotating clamping device is arranged on the lifting platform and can act on the single-span support device. The single-span support device is jacked up and disengaged from the roof through lifting. After disengagement, the single-span support device is rotated by a limited angle and clamped by the rotating clamping device, and then transported by the handling vehicle for the gateway support device. This patent can well solve the problem of advanced support for the broken roof in the dynamic pressure roadway at the outlet of the working face gateway, ensuring the safe and efficient production of the fully mechanized coal mining face. However, this patent still has the following problems:

[0003] 1. When the single-span support device falls onto the rotating clamping device, it is difficult to align the center position of the cross beam with the cross beam slot of the rotating table, resulting in the single-span support device being difficult to be symmetrically located on both sides of the rotating clamping device, and the single-span support device is prone to imbalance problems during rotation and transportation;

[0004] 2. According to the attached drawings of the specification Figure 2 , after the single-span support device rotates, the two columns are respectively located on both sides in the width direction of the handling vehicle for the gateway support device. During transportation, the single-span support device carried by the handling vehicle for the gateway support device is prone to collision with the single-span support device in the support state, and this handling vehicle for the gateway support device is difficult to be applicable to relatively narrow gateway roadways. Summary of the Invention

[0005] The purpose of the present invention is to provide a complete set of equipment for non-repeated support in coal mine roadways, in which the center of the cross beam of the single-span support device can accurately fall into the cross beam slot of the rotating table, avoiding the problem of eccentric imbalance during rotation. Under the condition of equal body width, the support device handling vehicle in this equipment can effectively avoid collisions of the single-span support device during transportation. Based on the above equipment, a handling method for the single-span support device is also provided.

[0006] To achieve the above object, the present invention provides a complete set of equipment for non-repeated support of coal mine roadways, including a single-span support device and a support device transporter. The single-span support device includes a cross beam and telescopic columns arranged at both ends of the cross beam. The telescopic columns can rotate inward and outward with respect to the cross beam. The support device transporter includes a vehicle frame, a traveling device arranged below the vehicle frame, a lifting device arranged above the vehicle frame, and a rotary clamping device installed on the lifting device. At the diagonal position of the vehicle frame, there are guide wheels for pushing the telescopic columns of the single-span support device outward. The axle of the guide wheel is arranged in the vertical direction, and the space along the length direction of the support device transporter and outside the guide wheel is the accommodation space for the telescopic columns.

[0007] Further, at the diagonal position of the vehicle frame, there is an arc-shaped guide wheel mounting bracket, and a plurality of rotatable guide wheels are installed on the guide wheel mounting bracket.

[0008] Further, a guide post is vertically arranged at the center position of the cross beam. The rotary clamping device includes a rotary table and a rotary table drive mechanism for driving the rotary table to rotate. On the rotary table, there is a cross beam slot for accommodating the cross beam and a guide slot for accommodating the guide post. The cross beam slot and the guide slot intersect perpendicularly, and the centers of the cross beam slot, the guide slot, and the rotary table are collinear in the vertical direction.

[0009] Further, the lifting device includes a double-telescopic guide cylinder and a double-telescopic oil cylinder. The double-telescopic guide cylinder includes a fixed cylinder, a first-stage sliding cylinder slidably sleeved with the fixed cylinder, and a second-stage sliding cylinder slidably sleeved with the first-stage sliding cylinder. The bottom end of the fixed cylinder is installed on the vehicle frame, and the top end of the second-stage sliding cylinder is connected to the rotary clamping device. The double-telescopic oil cylinder is located inside the double-telescopic guide cylinder, the cylinder body is installed on the vehicle frame, and the second-stage piston rod is connected to the rotary clamping device.

[0010] Further, both the fixed cylinder of the double-telescopic guide cylinder and the cylinder body of the double-telescopic oil cylinder are installed at the lowest position of the vehicle frame, and the double-telescopic guide cylinder is a square cylinder.

[0011] Further, guide wheels are arranged at the first diagonal position of the vehicle frame, and a fitting mounting bracket is arranged at the second diagonal position.

[0012] Further, the support device transporter is connected to a cable, a cable coiling device is installed on one of the fitting mounting brackets, and an emulsion tank is installed on the other fitting mounting bracket.

[0013] Further, a hydraulic oil tank, a hydraulic pump station, an electric control box, and an air cooler are arranged on the vehicle frame. The support device transporter is remotely controlled, and the traveling device is a crawler traveling device.

[0014] The present invention also provides a method for transporting a single-span support device for coal mine roadways, which is implemented based on the above complete set of equipment for non-repeated support of coal mine roadways, and includes the following steps:

[0015] S1, when moving the frame, drive the support device transporter to the bottom of the single-span support device at the tail of the scraper conveyor on the working surface, align the crossbeam clamping groove and guide groove of the rotating clamping device on the lifting device with the crossbeam and guide column respectively, and lift the lifting device until the crossbeam and guide column fall into the crossbeam clamping groove and guide groove;

[0016] S2, fully retract the telescopic column of the single-span support device, lower the lifting device, and then rotate the single-span support device to within the width of the support device transport vehicle through the rotating clamping device;

[0017] S3, the support device transport vehicle carries the single-span support device to the front end of the advance support of the drift, straightens the carried single-span support device by rotating the clamping device, raises the lifting device until the upper surface of the support device beam is close to the tunnel roof, and then extends the telescopic column of the single-span support device to the bottom disc and lands on the ground, and makes the single-span support device fully support the roof, and completes a non-repeated support cycle process from the working face exit to lowering → transporting → raising the frame.

[0018] The present invention has the following advantages:

[0019] 1. Two sets of guide wheels are arranged at two diagonal angles of the frame. When the distance between the two telescopic columns of the single-span support device is small, the two sets of guide wheels can push the telescopic columns outward during the rotation of the rotating platform, so that the two telescopic columns rotate to within the width of the support device transport vehicle, without occupying the lane space in the width direction of the vehicle, which can effectively avoid the collision of the single-span support device during the transportation process;

[0020] 2. A guide column is vertically arranged at the center of the crossbeam of the single-span support device, and a corresponding guide groove is arranged on the rotating platform of the support device transport vehicle. The rotating platform is raised to receive the single-span support device, and when the single-span support device falls, its guide column slides into the guide groove. This structure makes it easier to ensure that the single-span support device will not be eccentric when it falls on the rotating platform, and the support device transport vehicle can transport the single-span support device more stably;

[0021] 3. The lifting device adopts double telescopic oil cylinders and double telescopic guide cylinders, which are higher in strength and reliability compared with the scissor fork mechanism;

[0022] 4. The fixed cylinder of the double telescopic guide cylinder and the cylinder body of the double telescopic oil cylinder are installed at the lowest position of the frame, which can reduce the height of the whole machine and increase the lifting stroke, which is suitable for thin coal seam mining;

[0023] 5. The support device transporter has a compact design. A guide wheel is set at the first diagonal position of the frame. When transporting a single-span support device, the telescopic column can be rotated to within the width of the support device transporter. An accessory mounting frame is set at the second diagonal position to make full use of the space.

[0024] 6. The support device carrier is electrically driven, with lower pollution compared to diesel engine drive;

[0025] 7. The whole vehicle of the support device carrier is small in size, flexible in maneuvering, without a cab, and all operations are remotely controlled, ensuring high personnel safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0027] Figure 1 It is a state diagram of the single-span support device before rotation when the support device carrier transports the single-span support device;

[0028] Figure 2 It is Figure 1 the top view of;

[0029] Figure 3 It is a state diagram of the single-span support device after rotation when the support device carrier transports the single-span support device;

[0030] Figure 4 It is Figure 3 the top view of;

[0031] Figure 5 It is a structural schematic diagram of the support device carrier;

[0032] Figure 6 It is a structural and installation schematic diagram of the double telescopic guide cylinder and the double telescopic oil cylinder in the support device carrier;

[0033] Figure 7 It is a layout diagram of the single-span support device;

[0034] Figure 8 It is a handling diagram of the single-span support device;

[0035] Figure 9 It is a structural schematic diagram of the single-span support device.

[0036] In the figure: 101 - cross beam; 102 - telescopic column; 103 - guide column; 201 - vehicle frame; 202 - guide wheel; 203 - guide wheel mounting bracket; 204 - rotating table; 205 - double telescopic guide cylinder; 206 - double telescopic oil cylinder; 207 - cable reel device; 208 - emulsion tank; 209 - hydraulic oil tank; 210 - hydraulic pump station; 211 - electric control box; 212 - air cooler; 213 - protective cover; 214 - crawler travel device. Detailed implementation mode

[0037] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0038] This embodiment provides a complete set of equipment for non-repeated support in coal mine roadways, including a single-span support device and a support device transporter. The single-span support device includes a cross beam 101 and telescopic columns 102 arranged at both ends of the cross beam 101. The telescopic columns 102 can rotate inward and outward with respect to the cross beam 101. The support device transporter includes a vehicle frame 201, a traveling device arranged below the vehicle frame 201, a lifting device arranged above the vehicle frame 201, and a rotary clamping device installed on the lifting device. Guide wheels 202 for pushing the telescopic columns 102 of the single-span support device outward are arranged at the diagonal positions of the vehicle frame 201. The axle of the guide wheel 202 is arranged in the vertical direction. The space along the length direction of the support device transporter and outside the guide wheel 202 is the accommodation space for the telescopic columns 102, that is, no accessories are arranged in this space.

[0039] Further, an arc-shaped guide wheel mounting bracket 203 is arranged at the diagonal positions of the vehicle frame 201, and a plurality of rotatable guide wheels 202 are installed on the guide wheel mounting bracket 203.

[0040] Further, a guide post 103 is vertically arranged at the center position of the cross beam 101. The rotary clamping device includes a rotary table 204 and a rotary table drive mechanism for driving the rotary table 204 to rotate. A cross beam slot for accommodating the cross beam 101 and a guide slot for accommodating the guide post 103 are arranged on the rotary table 204. The cross beam slot and the guide slot intersect perpendicularly, and the centers of the cross beam slot, the guide slot, and the rotary table 204 are collinear in the vertical direction to ensure that the single-span support device does not become eccentric when it falls on the rotary table 204.

[0041] Further, the lifting device includes a double telescopic guide cylinder 205 and a double telescopic oil cylinder 206. The double telescopic guide cylinder 205 includes a fixed cylinder, a first-stage sliding cylinder slidably sleeved with the fixed cylinder, and a second-stage sliding cylinder slidably sleeved with the first-stage sliding cylinder. The bottom end of the fixed cylinder is installed on the vehicle frame 201 by welding, and the top end of the second-stage sliding cylinder is connected to the rotary clamping device. The double telescopic oil cylinder 206 is located inside the double telescopic guide cylinder 205, the cylinder body is installed on the vehicle frame 201, and the second-stage piston rod is connected to the rotary clamping device. The telescopic movement of the double telescopic oil cylinder 206 will drive the double telescopic guide cylinder 205 and the rotary clamping device to lift and lower synchronously.

[0042] Furthermore, the fixed cylinder of the double telescopic guide cylinder 205 and the cylinder body of the double telescopic oil cylinder 206 are both installed at the lowest position of the frame 201. The double telescopic guide cylinder 205 is a square cylinder to prevent the secondary sliding cylinder from rotating with the rotating platform 204 when it rotates.

[0043] Furthermore, a guide wheel 202 is provided at a first diagonal position of the vehicle frame 201, and an accessory mounting frame is provided at a second diagonal position.

[0044] Furthermore, the support device transport vehicle is connected to the cable, the cable winding device 207 is installed on one of the accessory mounting racks, and the emulsion tank 208 is installed on the other accessory mounting rack.

[0045] Furthermore, a hydraulic oil tank 209 , a hydraulic pump station 210 , an electric control box 211 and an air cooler 212 are provided on the vehicle frame 201 . The support device transport vehicle is remotely controlled. A protective cover 213 is provided outside the hydraulic pump station 210 and the air cooler 212 .

[0046] Furthermore, the traveling device is a crawler traveling device 214 .

[0047] This embodiment also provides a method for transporting a single-span support device in a coal mine tunnel, which is implemented based on the above-mentioned complete set of equipment for non-repeated support in coal mine tunnels, and includes the following steps:

[0048] S1, when moving the frame, drive the support device transporter to the bottom of the single-span support device at the tail of the scraper conveyor on the working surface, align the crossbeam clamping groove and the guide groove of the rotating clamping device on the lifting device with the crossbeam 101 and the guide column 103 respectively, and lift the lifting device until the crossbeam 101 and the guide column 103 fall into the crossbeam clamping groove and the guide groove;

[0049] S2, fully retract the telescopic column 102 of the single-span support device, lower the lifting device, and then rotate the single-span support device to within the width of the support device transport vehicle by rotating the clamping device;

[0050] S3, the support device transport vehicle carries the single-span support device to the front end of the advance support of the drift, straightens the carried single-span support device by rotating the clamping device, raises the lifting device until the upper surface of the support device beam 101 is close to the tunnel roof, and then extends the telescopic column 103 of the single-span support device to the bottom disc and lands on the ground, and makes the single-span support device fully support the roof, and completes a non-repeated support cycle process from the working face exit to lowering → transporting → raising the frame.

[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than limiting them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A complete set of equipment for non-repeated support in coal mine roadways, comprising a single-span support device and a support device transporter. The single-span support device includes a cross beam and telescopic columns arranged at both ends of the cross beam, and is characterized in that, The telescopic column can rotate inward and outward with respect to the crossbeam; The support device carrier includes a frame, a traveling device arranged below the frame, a lifting device arranged above the frame, and a rotary clamping device installed on the lifting device; Guide wheels for outwardly expanding the telescopic column of the single-span support device are arranged at the diagonal positions of the frame. The axle of the guide wheel is arranged in the vertical direction, and the space along the length direction of the support device carrier and outside the guide wheel is the accommodation space for the telescopic column; Arc-shaped guide wheel mounting brackets are arranged at the diagonal positions of the frame, and a plurality of rotatable guide wheels are mounted on the guide wheel mounting brackets; Two sets of guide wheels are arranged at two diagonals of the frame. During the rotation of the rotary table, the two sets of guide wheels can outwardly expand the telescopic column, so that the two telescopic columns rotate within the width of the support device carrier body and do not occupy the roadway space in the width direction of the body; 2. The complete set of equipment for non-repeated support in coal mine roadways according to claim 1, characterized in that, A guide post is vertically arranged at the center position of the crossbeam; The rotary clamping device includes a rotary table and a rotary table drive mechanism for driving the rotary table to rotate; A crossbeam slot for accommodating the crossbeam and a guide slot for accommodating the guide post are arranged on the rotary table. The crossbeam slot and the guide slot intersect perpendicularly, and the centers of the crossbeam slot, the guide slot and the rotary table are collinear in the vertical direction; 3. The complete set of equipment for non-repeated support in coal mine roadways according to claim 2, characterized in that, The lifting device includes a double-telescopic guide cylinder and a double-telescopic oil cylinder; The double-telescopic guide cylinder includes a fixed cylinder, a first-stage sliding cylinder slidably sleeved with the fixed cylinder, and a second-stage sliding cylinder slidably sleeved with the first-stage sliding cylinder. The bottom end of the fixed cylinder is installed on the frame, and the top end of the second-stage sliding cylinder is connected to the rotary clamping device; The double-telescopic oil cylinder is located inside the double-telescopic guide cylinder. The cylinder body is installed on the frame, and the second-stage piston rod is connected to the rotary clamping device; 4. The complete set of equipment for non-repeated support of coal mine roadways according to claim 3, characterized in that, Both the fixed cylinder of the double-telescopic guide cylinder and the cylinder body of the double-telescopic oil cylinder are installed at the lowest position of the frame, and the double-telescopic guide cylinder is a square cylinder; 5. The complete set of equipment for non-repeated support in coal mine roadways according to claim 4, characterized in that, Guide wheels are arranged at the first diagonal position of the frame, and a fitting mounting bracket is arranged at the second diagonal position; 6. The complete set of equipment for non-repeated support in coal mine roadways according to claim 5, characterized in that, The support device carrier is connected to a cable, a cable coiling device is installed on one of the fitting mounting brackets, and an emulsion tank is installed on the other fitting mounting bracket; 7. The complete set of equipment for non-repeated support of coal mine roadways according to claim 6, characterized in that, A hydraulic oil tank, a hydraulic pump station, an electric control box and an air cooler are arranged on the frame, and the support device carrier is remotely controlled; The traveling device is a crawler traveling device; 8. A method for transporting a single-span support device in a coal mine roadway, characterized in that, Based on the implementation of the complete set of equipment for non-repeated support in coal mine roadways according to any one of claims 2-7, the following steps are included: S1. When moving the support, drive the support device carrier to below the single-span support device at the tail of the face scraper conveyor. Align the crossbeam slot and the guide slot of the rotary clamping device on the lifting device with the crossbeam and the guide post respectively. Raise the lifting device until the crossbeam and the guide post fall into the crossbeam slot and the guide slot; S2. Completely retract the telescopic column of the single-span support device, lower the lifting device, and then rotate the single-span support device to within the width of the support device carrier body through the rotary clamping device; S3. The support device carrier transports the single-span support device to the front end of the advance support in the gate roadway, straightens the loaded single-span support device through the rotary clamping device, raises the lifting device until the upper surface of the crossbeam of the support device is close to the roadway roof, then extends the telescopic column of the single-span support device until the bottom disc touches the ground, and fully tightens the single-span support device against the roof. Lowering the support from the working face exit → transporting → raising the support completes a non-repeated support cycle process.

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