Onboard temporary supporting device of rock drift heading machine

Abstract

The utility model relates to the technical field of temporary supporting, in particular to an onboard temporary supporting device of a rock roadway heading machine, which comprises a base, a lifting driving device, a supporting beam and a telescopic beam. The two supporting beams are arranged in parallel and located on the upper side of the base, any supporting beam is connected with the base through two lifting driving devices, the two telescopic beams are arranged in the two supporting beams in a sliding mode respectively, and telescopic drivers are arranged between the telescopic beams and the supporting beams; a sleeper is arranged at the upper end of the telescopic beam, and a protective net and a W-shaped steel belt are arranged at the upper end of the sleeper; a lug plate connected with a heading machine is arranged at the lower end of the bottom plate. The telescopic beam capable of ascending, descending and stretching is adopted to support the protecting net and the W-shaped steel belt, the protecting net and the W-shaped steel belt can be conveniently moved to the position of a top plate, and temporary supporting is achieved. The bottom plate is connected with the lug plate fixedly arranged on the heading machine through the pin shaft, so that the dismounting and the mounting are convenient, and the normal work of the heading machine is not influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of temporary support, and more specifically to an onboard temporary support device of a rock tunnel boring machine. Background Art

[0002] In the early stage of coal mining, coal mines need to dig a high-extraction tunnel and a low-extraction tunnel to extract gas from the coal seam and adjacent coal seams to prevent gas explosion accidents. The high-extraction and low-extraction tunnels are only used for gas extraction, so the tunnel cross-section is minimized as much as possible, and both are rock tunnels. The tunnel excavation process requires that operators must permanently support the tunnel under the protection of temporary support. The common temporary support process is to use single columns and sleepers to temporarily support the tunnel. As the tunnel is continuously developed, operators need to carry heavier single columns every day, which is very labor-intensive. At the same time, there are certain safety risks when operators temporarily support the tunnel.

[0003] Therefore, it is necessary to improve the prior art. Utility Model Content

[0004] In order to overcome the deficiencies in the prior art, a temporary support device onboard a rock tunnel boring machine is provided which is simple to operate and easy to disassemble.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0006] A temporary support device mounted on a rock tunnel boring machine, comprising a base, a lifting drive device, a support beam and a telescopic beam; two support beams are arranged in parallel and located on the upper side of the base, and any one of the support beams is connected to the base through two lifting drive devices, and two telescopic beams are arranged and slidably arranged in the two support beams respectively, and a telescopic drive is arranged between the telescopic beams and the support beams;

[0007] A sleeper is arranged at the upper end of the telescopic beam, and a protective net and a W-shaped steel belt are arranged at the upper end of the sleeper;

[0008] The lower end of the base plate is provided with an ear plate connected to the tunnel boring machine.

[0009] Preferably, it also includes an auxiliary support rod, the lower end of the telescopic beam is fixedly provided with a hinge seat, the upper end of the auxiliary support rod is hinged to the hinge seat, and an angle control mechanism is provided between the auxiliary support rod and the telescopic beam;

[0010] The auxiliary support rod is a telescopic rod, and a locking mechanism is provided between the fixed rod of the auxiliary support rod and the telescopic rod.

[0011] Preferably, the angle control mechanism includes a linear drive I, a sliding block, a connecting rod and a fixed block, the sliding block is slidably arranged in the telescopic beam, the fixed block is fixedly arranged on the auxiliary support rod, the two ends of the connecting rod are respectively hinged to the sliding block and the fixed block, the linear drive I is fixedly arranged in the telescopic beam, and the driving end of the linear drive I is connected to the sliding block.

[0012] Preferably, a sleeve for inserting the auxiliary support rod is fixedly provided at the lower end of the support beam.

[0013] Preferably, four ear plates are provided, four mounting holes are provided on the base, hinge holes are fixedly provided on the left and right sides of the mounting holes, and the ear plates pass through the mounting holes and are connected to the hinge holes through pins.

[0014] Preferably, the lifting drive device includes a fixed sleeve, a sliding sleeve and a linear drive II, the fixed sleeve is fixedly connected to the base in a direction perpendicular to the base, the lower end of the sliding sleeve is slidably connected to the fixed sleeve, the upper end of the sliding sleeve is fixedly connected to the support beam, the linear drive II is arranged in the fixed sleeve, the fixed end of the linear drive II is relatively fixed to the fixed sleeve, and the working end of the linear drive II is relatively fixed to the sliding sleeve.

[0015] Preferably, a mounting seat is hinged at the upper end of the sliding sleeve, and the mounting seat is fixedly connected to the support beam.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] 1. The utility model adopts a telescopic beam that can be lifted and retracted to support the guard net and the W-shaped steel belt, which can be easily moved to the top plate position to achieve temporary support. The bottom plate is connected to the ear plate fixed on the tunnel boring machine through a pin shaft, which is convenient for disassembly and installation without affecting the normal operation of the tunnel boring machine.

[0018] 2. The utility model can support the top plate during the excavation process, enhance the stability of the tunnel boring machine, ensure the cutting amount of the cutting head, and improve the tunneling efficiency of the tunnel boring machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The specific implementation of the utility model will be further described in detail below with reference to the accompanying drawings.

[0020] Figure 1 It is a schematic diagram of the upper structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the lower structure of the utility model;

[0022] Figure 3 for Figure 1 A partial enlarged view of middle A;

[0023] Figure 4 for Figure 2 A partial enlarged view of B.

[0024] In the figure: 1-base, 2-pin shaft, 3-support beam, 4-telescopic beam, 5-lifting drive device, 501-fixed sleeve, 502-sliding sleeve, 503-linear drive II, 504-mounting seat, 6-telescopic drive, 7-sleeper, 8-protective net, 9-ear plate, 10-auxiliary support rod, 11-articulated seat, 12-angle control mechanism, 13-locking mechanism, 14-linear drive I, 15-sliding block, 16-connecting rod, 17-fixed block, 18-sleeve, 19-articulated hole, 20-hydraulic system. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] like Figures 1 to 4 As shown, a temporary support device mounted on a rock tunnel boring machine includes a base 1, a lifting drive device 5, a support beam 3 and a telescopic beam 4. Two support beams 3 are arranged in parallel and located on the upper side of the base 1. Each support beam 3 is connected to the base 1 through two lifting drive devices 5. The lifting drive device 5 includes a fixed sleeve 501, a sliding sleeve 502 and a linear drive II 503. The linear drive II 503 can adopt a hydraulic rod. The base 1 is provided with a hydraulic system 20, and the linear drive II 503 is connected to the hydraulic system. The fixed sleeve 501 is fixedly connected to the base 1 in a direction perpendicular to the base 1. The lower end of the sliding sleeve 502 is slidably connected to the fixed sleeve 501. The upper end of the sliding sleeve 502 is fixedly connected to the support beam 3. The linear drive II 503 is arranged in the fixed sleeve 501. The fixed end of the linear drive II 503 is relatively fixed to the fixed sleeve 501. The working end of the linear drive II 503 is relatively fixed to the sliding sleeve 502. The upper end of the sliding sleeve 502 is hinged with a mounting seat 504, and the mounting seat 504 is fixedly connected to the support beam 3. The relative position of the sliding sleeve 502 and the fixed sleeve 501 is changed by the linear actuator II 503, thereby adjusting the height of the support beam 3. The two linear actuators II 503 can be controlled separately, so that the support beam 3 can have a certain inclination angle relative to the horizontal plane, so as to adapt to the roof conditions at different angles.

[0027] Two telescopic beams 4 are provided and are slidably arranged in two supporting beams 3, respectively. A sleeper 7 is provided at the upper end of the telescopic beam 4, and a protective net 8 and a W-shaped steel belt are provided at the upper end of the sleeper 7. A telescopic drive 6 is provided between the telescopic beam 4 and the supporting beam 3. The telescopic drive 6 can be a linear motor or a hydraulic rod. The telescopic length of the telescopic beam 4 is changed by the telescopic drive 6, so as to move the protective net 8 and the W-shaped steel belt to a suitable position.

[0028] In order to facilitate the installation and disassembly of the onboard temporary support, the lower end of the base plate 1 is provided with an ear plate 9 connected to the tunnel boring machine, and four ear plates 9 are provided. Four mounting holes are provided on the base 1, and hinge holes 19 are fixedly provided on the left and right sides of the mounting holes. The ear plate 9 passes through the mounting holes and is connected to the hinge holes 19 through the pin shaft 2. By disassembling the pin shaft 2, the base plate 1 can be disassembled and assembled.

[0029] In order to improve the reliability of the onboard temporary support, an auxiliary support rod 10 is also provided. The auxiliary support rod 10 adopts a telescopic rod to facilitate adapting to spatial conditions of different heights. A locking mechanism 13 is provided between the fixed rod and the telescopic rod of the auxiliary support rod 10 to lock the length of the auxiliary support rod 10. Specifically, the locking mechanism 13 can adopt a latch. A plurality of positioning holes and adjustment holes are respectively provided on the fixed rod and the telescopic rod of the auxiliary support rod 10. The auxiliary support rod 10 can be locked by simultaneously penetrating one of the positioning holes and the adjustment hole with the latch. An articulated seat 11 is fixedly provided at the lower end of the telescopic beam 4. The upper end of the auxiliary support rod 10 is hinged to the articulated seat 11. An angle control mechanism 12 is provided between the auxiliary support rod 10 and the telescopic beam 4. The angle control mechanism 12 drives the auxiliary support rod 10 to be retracted and extended. Preferably, the articulated axis of the articulated seat 11 is tilted. When the auxiliary support rod 10 rotates downward, it opens to both sides to prevent interference with the normal operation of the cutting head of the tunnel boring machine.

[0030] The angle control mechanism 12 includes a linear driver Ⅰ14, a sliding block 15, a connecting rod 16 and a fixed block 17. The sliding block 15 is slidably set in the telescopic beam 4, and the fixed block 17 is fixedly set on the auxiliary support rod 10. The two ends of the connecting rod 16 are hinged to the sliding block 15 and the fixed block 17 respectively. The linear driver Ⅰ14 is fixedly set in the telescopic beam 4. The driving end of the linear driver Ⅰ14 is fixedly connected to the sliding block 15. The sliding block 15 is driven by the linear driver Ⅰ14 to slide along the telescopic beam 4, and then the fixed block 17 and the auxiliary support rod 10 are pulled by the connecting rod 16 to rotate relative to the hinge seat 11, thereby realizing the retraction and extension of the auxiliary support rod 10.

[0031] A sleeve 18 for inserting the auxiliary support rod 10 is fixedly provided at the lower end of the support beam 3. When the auxiliary support rod 10 is in a retracted state, it can be inserted into the sleeve 18 to prevent accidental deployment.

[0032] Only the preferred embodiments of the present invention are described in detail above, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in this field without departing from the purpose of the present invention, and various changes should be included in the protection scope of the present invention.

Claims

1. A temporary support device mounted on a rock tunnel boring machine, characterized in that: It comprises a base (1), a lifting drive device (5), a support beam (3) and a telescopic beam (4); two support beams (3) are arranged in parallel and are located on the upper side of the base (1); any one of the support beams (3) is connected to the base (1) via two lifting drive devices (5); two telescopic beams (4) are arranged and are respectively slidably arranged in the two support beams (3); a telescopic drive (6) is arranged between the telescopic beam (4) and the support beam (3); A sleeper (7) is arranged at the upper end of the telescopic beam (4), and a protective net (8) and a W-shaped steel belt are arranged at the upper end of the sleeper (7); The lower end of the base (1) is provided with an ear plate (9) for connecting to a tunnel boring machine.

2. The temporary support device mounted on a rock tunnel boring machine according to claim 1, characterized in that: It also comprises an auxiliary support rod (10), a hinge seat (11) is fixedly provided at the lower end of the telescopic beam (4), the upper end of the auxiliary support rod (10) is hinged to the hinge seat (11), and an angle control mechanism (12) is provided between the auxiliary support rod (10) and the telescopic beam (4); The auxiliary support rod (10) is a telescopic rod, and a locking mechanism (13) is provided between the fixed rod and the telescopic rod of the auxiliary support rod (10).

3. The temporary support device mounted on a rock tunnel boring machine according to claim 2, characterized in that: The angle control mechanism (12) comprises a linear drive I (14), a sliding block (15), a connecting rod (16) and a fixed block (17); the sliding block (15) is slidably arranged in the telescopic beam (4); the fixed block (17) is fixedly arranged on the auxiliary support rod (10); two ends of the connecting rod (16) are respectively hinged to the sliding block (15) and the fixed block (17); the linear drive I (14) is fixedly arranged in the telescopic beam (4); and the driving end of the linear drive I (14) is connected to the sliding block (15).

4. The temporary support device mounted on a rock tunnel boring machine according to claim 2, characterized in that: A sleeve (18) for inserting the auxiliary support rod (10) is fixedly provided at the lower end of the support beam (3).

5. The temporary support device mounted on a rock tunnel boring machine according to claim 1, characterized in that: Four ear plates (9) are provided, and four mounting holes are provided on the base (1). Hinge holes (19) are fixedly provided on the left and right sides of the mounting holes. The ear plates (9) pass through the mounting holes and are connected to the hinge holes (19) via pins (2).

6. The temporary support device mounted on a rock tunnel boring machine according to claim 1, characterized in that: The lifting drive device (5) comprises a fixed sleeve (501), a sliding sleeve (502) and a linear drive II (503); the fixed sleeve (501) is fixedly connected to the base (1) in a direction perpendicular to the base (1); the lower end of the sliding sleeve (502) is slidably connected to the fixed sleeve (501); the upper end of the sliding sleeve (502) is fixedly connected to the support beam (3); the linear drive II (503) is arranged in the fixed sleeve (501); the fixed end of the linear drive II (503) is fixed relative to the fixed sleeve (501); and the working end of the linear drive II (503) is fixed relative to the sliding sleeve (502).

7. The temporary support device mounted on a rock tunnel boring machine according to claim 6, characterized in that: A mounting seat (504) is hingedly connected to the upper end of the sliding sleeve (502), and the mounting seat (504) is fixedly connected to the support beam (3).

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