Walking system of mining large-gradient heading machine

Abstract

The invention discloses a mining large-gradient heading machine walking system, and relates to the technical field of rock roadway heading machines, the mining large-gradient heading machine walking system comprises a walking frame and guide plates, the walking frame is fixedly installed at the bottom of a heading machine body, and the guide plates are fixedly installed on a working face slope through foundation bolts; a walking motor is fixedly mounted on one side of the walking frame, the output end of the walking motor is fixedly connected with a walking speed reducer, a driving wheel is fixedly mounted at the output end of the walking speed reducer, and the driving wheel is matched with the guide plate to drive the heading machine body to climb and walk; two groups of driven wheels are rotationally mounted at the lower part of the walking frame through walking bearings, are symmetrically distributed on two sides of the walking frame, and are used for supporting the heading machine main body; the traveling mechanism of the heading machine can work in a roadway with a large gradient of-30 degrees to + 30 degrees, the situation that blasting driving is adopted for the roadway with the large gradient in the past is changed, the working efficiency is greatly improved, and safety guarantee is provided for workers.

Description

Technical Field

[0001] The invention relates to the technical field of rock tunnel boring machines, and in particular to a traveling system of a large-slope mining boring machine. Background Art

[0002] A rock tunnel boring machine is a heavy-duty mechanical equipment specially used for digging tunnels in rocks. With its powerful crushing ability and efficient digging speed, it plays an important role in coal mines, metal mines, tunnel engineering and other fields. A rock tunnel boring machine is mainly composed of a traveling mechanism, a working mechanism, a loading mechanism and a transfer mechanism. When working, the tunnel boring machine moves on the rock surface through the traveling mechanism, while the cutting head in the working mechanism rotates continuously to crush the rock. The cut rock is then collected by the loading mechanism and transported to the designated location, thus completing the tunnel excavation work.

[0003] At present, there are many models of rock tunnel boring machine series products in my country. With the gradual increase of 18°-25° steep-angle coal seams, it has become a major factor restricting mechanized production, and it also brings a series of problems to the comprehensive excavation process. The main problem of the tunnel boring machine when working uphill is that the crawler slips, the friction force of climbing is insufficient, and the reaction force cannot be provided when cutting hard rock, so the tunnel cannot be driven. Summary of the invention

[0004] The purpose of the present invention is to provide a walking system for a large-slope mining tunnel boring machine to solve the technical problem that the tunnel boring machine cannot be driven because of insufficient climbing friction caused by crawler slippage when working uphill, and cannot provide reaction force when cutting hard rock.

[0005] The purpose of the present invention can be achieved through the following technical solutions:

[0006] A walking system for a large-slope tunnel boring machine for mining, comprising a walking frame and a guide plate, wherein the walking frame is fixedly mounted at the bottom of a tunnel boring machine body, and the guide plate is provided in a plurality of groups and is fixedly mounted on a slope of a working surface by anchor bolts, and the guide plate is used to support the tunnel boring machine body to climb the slope;

[0007] A traveling motor is fixedly installed on one side of the traveling frame, a traveling reducer is fixedly connected to the output end of the traveling motor, a driving wheel is fixedly installed on the output end of the traveling reducer, and the driving wheel cooperates with the guide plate to drive the tunnel boring machine body to climb and walk; two groups of driven wheels are rotatably installed on the lower part of the traveling frame through traveling bearings, and the two groups of driven wheels are symmetrically distributed on both sides of the traveling frame, and the driven wheels are used to support the tunnel boring machine body.

[0008] As a further solution of the present invention: the driving wheel includes a driving wheel sleeve, a plurality of travel ratchets are distributed in a circular array on the outer periphery of the driving wheel sleeve, an inner ring plate connected to the output end of the travel reducer is fixedly provided on the inner ring of the driving wheel sleeve, and a plurality of internal connection holes distributed in a circular array are provided on the inner ring plate.

[0009] As a further solution of the present invention: the guide plate includes a main pad, a walking wheel groove is arranged at the center of the upper end of the main pad, and a plurality of ratchet grooves matching with walking ratchets are evenly arranged at the center of the bottom of the walking wheel groove along the length direction of the main pad.

[0010] As a further solution of the present invention: a plurality of evenly distributed guide plate holes are provided on both sides of the main body pad along the length direction, and the guide plate holes are used for installing anchor bolts.

[0011] As a further solution of the present invention: a plurality of guide plate teeth nails distributed in a rectangular array are arranged at the lower end of the main body pad, and the guide plate teeth nails are used to sink into the ground to limit the main body pad.

[0012] As a further solution of the present invention: the driven wheel includes a driven shaft, the driven shaft is rotatably mounted on the traveling frame through a traveling bearing, a supporting wheel is fixedly provided at the center position of the periphery of the driven shaft, and a guide wheel is fixedly provided at the center position of the periphery of the supporting wheel.

[0013] As a further solution of the present invention: the wheel width of the guide wheel corresponds to the running wheel groove.

[0014] As a further solution of the present invention: the radius difference between the guide wheel and the support wheel is equal to the groove depth of the running wheel groove.

[0015] Beneficial effects of the present invention:

[0016] (1) The system is applied to the roadheader with strong climbing ability, easy operation and maintenance, and can solve the problems of high risk of blasting and digging, improve work efficiency, and increase workload and waste of coal resources caused by changing the angle of the tunnel. The traveling mechanism of the roadheader can work in tunnels with a large slope of -30° to +30°, changing the previous situation of blasting for large slope tunnels, greatly improving work efficiency, and providing safety assurance for workers.

[0017] (2) When climbing a steep slope, place the guide plate under the TBM. Use anchor bolts to fix the guide plate to the steep working surface every 2-3 plates. When the TBM is moving, the travel ratchet of the drive wheel engages with the ratchet groove on the guide plate. The weight of the TBM presses the guide plate against the slope. After the guide plate teeth at the bottom of the guide plate are pressed, the travel system provides reaction force for the TBM to move, greatly increasing the TBM's climbing ability.

[0018] (3) The driven wheel rolls on the guide plate, and the driven wheel shares most of the weight of the tunnel boring machine on the guide plate. The wheel width of the support wheel is greater than the width of the running wheel groove. The contact between the support wheel and the upper surface of the guide plate supports the main body of the tunnel boring machine, ensuring that the tunnel boring machine remains stable during movement. The guide wheel on the driven wheel cooperates with the running wheel groove of the guide plate to guide the tunnel boring machine when climbing a slope. When the tunnel boring machine is performing a cutting operation, the guide plate provides sufficient reaction force to enable the tunnel boring machine to perform the cutting operation smoothly. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below in conjunction with the accompanying drawings.

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 This is an axial cross-sectional view of the driving wheel and the guide plate of the present invention;

[0022] Figure 3 This is a radial cross-sectional view of the driving wheel and the guide plate of the present invention;

[0023] Figure 4 This is a diagram showing the cooperation between the driven wheel and the guide plate of the present invention;

[0024] Figure 5 It is a schematic structural diagram of the driving wheel of the present invention;

[0025] Figure 6 It is a schematic diagram of the three-dimensional structure of the guide plate of the present invention;

[0026] Figure 7 It is a schematic diagram of the axonometric structure of the guide plate of the present invention;

[0027] Figure 8 It is a structural schematic diagram of the driven wheel of the present invention.

[0028] In the figure: 1. driving wheel; 11. driving wheel sleeve; 12. inner ring plate; 121. inner hole; 13. traveling ratchet; 2. traveling reducer; 3. guide plate; 31. main body pad; 32. traveling wheel groove; 33. ratchet groove; 34. guide plate hole; 35. guide plate tooth pin; 4. traveling frame; 5. driven wheel; 51. driven shaft; 52. supporting wheel; 53. guide wheel; 6. traveling motor; 7. traveling bearing; 100. main body of the tunnel boring machine. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] See also Figure 1-Figure 8 As shown, the present invention is a walking system for a large-slope tunnel boring machine for mining, comprising a walking frame 4 and a guide plate 3, wherein the walking frame 4 is fixedly mounted at the bottom of the tunnel boring machine body 100, and the guide plate 3 is provided with a plurality of groups and is fixedly mounted on the slope of the working surface by anchor bolts, and the guide plate 3 is used to support the tunnel boring machine body 100 to climb and walk;

[0031] A traveling motor 6 is fixedly installed on one side of the traveling frame 4, and a traveling reducer 2 is fixedly connected to the output end of the traveling motor 6. A driving wheel 1 is fixedly installed on the output end of the traveling reducer 2. The driving wheel 1 cooperates with the guide plate 3 to drive the tunnel boring machine body 100 to climb and walk; two groups of driven wheels 5 are rotatably installed on the lower part of the traveling frame 4 through traveling bearings 7, and the two groups of driven wheels 5 are symmetrically distributed on both sides of the traveling frame 4, and the driven wheels 5 are used to support the tunnel boring machine body 100.

[0032] The driving wheel 1 includes a driving wheel sleeve 11, and a plurality of travel ratchets 13 are distributed in a circular array on the outer periphery of the driving wheel sleeve 11. An inner ring plate 12 connected to the output end of the travel reducer 2 is fixedly provided on the inner ring of the driving wheel sleeve 11, and a plurality of internal connection holes 121 distributed in a circular array are provided on the inner ring plate 12.

[0033] Specifically, the driving wheel 1 is fixed with rigid bolts and a travel reducer 2, and the travel motor 6 outputs torque to the driving wheel 1 through the travel reducer 2. Ten driven wheels 5 are installed in front of the driving part. This installation method allows the driving part to better transmit the driving force to the main part of the tunnel boring machine.

[0034] The guide plate 3 includes a main body pad 31 , a travel wheel groove 32 is arranged at the center of the upper end of the main body pad 31 , and a plurality of ratchet grooves 33 matching with the travel ratchets 13 are evenly arranged at the center of the bottom of the travel wheel groove 32 along the length direction of the main body pad 31 .

[0035] The main body pad 31 is provided with a plurality of evenly distributed guide plate holes 34 on both sides along the length direction, and the guide plate holes 34 are used to install anchor bolts.

[0036] A plurality of guide plate teeth 35 distributed in a rectangular array are disposed at the lower end of the main body pad 31 . The guide plate teeth 35 are used to sink into the ground to limit the main body pad 31 .

[0037] Specifically, when climbing a steep slope, the guide plate 3 is placed under the tunnel boring machine. The guide plate 3 is fixed to the steep working surface with anchor bolts every 2-3 pieces. When the tunnel boring machine is moving, the walking ratchet 13 of the driving wheel 1 engages with the ratchet groove 33 on the guide plate 3. The weight of the tunnel boring machine itself presses the guide plate 3 against the slope. After the guide plate tooth nails 35 at the bottom of the guide plate 3 are pressed, the walking system provides a reaction force for the tunnel boring machine to move, thereby greatly increasing the tunnel boring machine's climbing ability.

[0038] The driven wheel 5 includes a driven shaft 51 , which is rotatably mounted on the traveling frame 4 via a traveling bearing 7 , a supporting wheel 52 is fixedly disposed at the center of the periphery of the driven shaft 51 , and a guiding wheel 53 is fixedly disposed at the center of the periphery of the supporting wheel 52 .

[0039] The wheel width of the guide wheel 53 corresponds to the running wheel groove 32 .

[0040] The radius difference between the guide wheel 53 and the support wheel 52 is equal to the groove depth of the running wheel groove 32 .

[0041] Specifically, the driven wheel 5 performs rolling friction on the guide plate 3, and the driven wheel 5 shares most of the weight of the tunnel boring machine onto the guide plate 3, wherein the wheel width of the support wheel 52 is greater than the width of the running wheel groove 32, and the main body of the tunnel boring machine is supported by the contact between the support wheel 52 and the upper surface of the guide plate 3, ensuring that the tunnel boring machine remains stable during movement, and the guide wheel 53 on the driven wheel 5 cooperates with the running wheel groove 32 of the guide plate 3 to guide the tunnel boring machine when climbing a slope, and the guide plate 3 provides sufficient reaction force when the tunnel boring machine performs a cutting operation, so that the tunnel boring machine can perform the cutting operation smoothly.

[0042] The working principle of the present invention is as follows: when the tunnel boring machine is going uphill on a large slope, due to the large slope, the crawler used in the traditional tunnel boring machine is not strong enough to grip the ground and easily cause landslides, and it is even more unable to provide reaction force during cutting, and the tunnel cannot be moved. Although the crawler pad makes the slope angle between the tunnel boring machine and the working surface smaller, it cannot fundamentally solve the problem that the crawler of the tunnel boring machine cannot provide enough friction to enable the tunnel boring machine to go uphill. Figure 1As shown, the walking system is redesigned, a rack-type sprocket drive is adopted, a guide plate 3 is added, and the guide plate 3 is fixed to the working surface slope with high-strength anchor bolts. The guide plate tooth nails 35 at the bottom of the guide plate 3 are firmly pressed into the working surface slope. When the tunnel boring machine is going uphill, the tunnel boring machine is pressed on the guide plate 3, and the guide plate 3 bears the weight of the tunnel boring machine body, which further allows the guide plate 3 to be firmly fixed to the working surface slope. When the tunnel boring machine climbs the slope, the walking ratchet 13 of the driving wheel 1 on the walking system is meshed with the ratchet groove 33 on the guide plate 3, forming a walking state of rack-meshing. At this time, the guide plate 3 can provide sufficient reaction for the tunnel boring machine. With force, the tunnel boring machine can climb the slope smoothly. The driven wheel 5 of the walking system rolls on the walking wheel groove 32 on the guide plate 3 to guide the tunnel boring machine when it is walking. When the tunnel boring machine is cutting on the slope, the walking system can also provide a good reaction force, so that the tunnel boring machine can smoothly perform the cutting operation. The advantage of this design is that it adopts a new rear hydraulic drive form and adds a guide plate 3 fixed to the working surface slope. The friction force provided by the walking system of the tunnel boring machine can easily solve the problem of climbing a large slope. When the tunnel boring machine is cutting, the walking system also provides sufficient reaction force for the tunnel boring machine.

[0043] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A walking system for a large-slope tunnel boring machine for mining, characterized in that: It comprises a walking frame (4) and a guide plate (3), wherein the walking frame (4) is fixedly mounted on the bottom of a tunnel boring machine body (100), and the guide plate (3) is provided with a plurality of groups and is fixedly mounted on a working surface slope by anchor bolts, and the guide plate (3) is used to support the tunnel boring machine body (100) in climbing and walking; A travel motor (6) is fixedly mounted on one side of the travel frame (4); the output end of the travel motor (6) is fixedly connected to a travel reducer (2); the output end of the travel reducer (2) is fixedly mounted with a drive wheel (1); the drive wheel (1) cooperates with the guide plate (3) to drive the tunnel boring machine body (100) to climb a slope; two groups of driven wheels (5) are rotatably mounted on the lower part of the travel frame (4) via travel bearings (7); the two groups of driven wheels (5) are symmetrically distributed on both sides of the travel frame (4); and the driven wheels (5) are used to support the tunnel boring machine body (100).

2. A mining steep slope tunneling machine travel system according to claim 1, characterized in that: The driving wheel (1) comprises a driving wheel sleeve (11), a plurality of travel ratchets (13) are distributed in an annular array on the outer circumference of the driving wheel sleeve (11), an inner ring plate (12) connected to the output end of the travel reducer (2) is fixedly arranged on the inner ring of the driving wheel sleeve (11), and a plurality of internal connection holes (121) are distributed in an annular array on the inner ring plate (12).

3. A traveling system for a large-slope mining tunnel boring machine according to claim 2, characterized in that: The guide plate (3) comprises a main body pad (31), a walking wheel groove (32) is arranged at the center of the upper end of the main body pad (31), and a plurality of ratchet grooves (33) matching with the walking ratchets (13) are evenly arranged at the center of the bottom of the walking wheel groove (32) along the length direction of the main body pad (31).

4. A traveling system for a large-slope mining tunnel boring machine according to claim 3, characterized in that: The main body pad (31) is provided with a plurality of evenly distributed guide plate holes (34) on both sides along the length direction, and the guide plate holes (34) are used for installing anchor bolts.

5. A traveling system for a large-slope mining tunnel boring machine according to claim 3, characterized in that: A plurality of guide plate tooth pins (35) distributed in a rectangular array are arranged at the lower end of the main body pad (31), and the guide plate tooth pins (35) are used to sink into the ground to limit the main body pad (31).

6. A traveling system for a high-slope mining tunnel boring machine according to any one of claims 3 to 5, characterized in that: The driven wheel (5) comprises a driven shaft (51), the driven shaft (51) being rotatably mounted on a traveling frame (4) via a traveling bearing (7), a supporting wheel (52) being fixedly arranged at the center position of the outer periphery of the driven shaft (51), and a guiding wheel (53) being fixedly arranged at the center position of the outer periphery of the supporting wheel (52).

7. A traveling system for a large-slope mining tunnel boring machine according to claim 6, characterized in that: The wheel width of the guide wheel (53) corresponds to the running wheel groove (32).

8. A traveling system for a large-slope mining tunnel boring machine according to claim 7, characterized in that: The radius difference between the guide wheel (53) and the support wheel (52) is equal to the groove depth of the running wheel groove (32).

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