Multi-degree-of-freedom cantilever type heading machine of underground coal mine multi-arm jumbolter

Abstract

The invention discloses a multi-degree-of-freedom cantilever type heading machine of an underground coal mine multi-arm jumbolter. The heading machine comprises a heading system, a front drilling system, an auxiliary drilling system and a pushing system. The pushing systems are symmetrically arranged on the two sides of a machine body of the tunneling system and can move front and back relative to the tunneling system. The front drilling system is arranged at the front end of the pushing system, and the pushing system drives the front drilling system to move front and back; the auxiliary drilling system is arranged on the upper portion of the pushing system, and the pushing system drives the auxiliary drilling system to move front and back. The heading machine further comprises a temporary supporting system arranged on the upper portion of a cutting device of the heading system. The temporary support system has a folded state and an extended state; when the heading machine carries out heading operation, the temporary support system is in a folded state; when the heading machine carries out supporting operation, the temporary supporting system is in a stretching state. According to the technical scheme, the problems that in the prior art, roadway tunneling and supporting cannot be conducted continuously, the supporting labor intensity is large, efficiency is low, and safety is poor are solved.

Description

Technical Field

[0001] The present invention belongs to the technical field of coal mine tunnel equipment, and in particular relates to a multi-arm anchor drill rig with multiple degrees of freedom cantilevered tunneling machine in a coal mine. Background Art

[0002] At present, most of the excavation of underground tunnels in my country's coal mines is mainly carried out by cantilever tunneling machines, and single-body anchor drilling rigs are used for anchor and cable support. The ratio of tunnel excavation and support time is about 1:3. The excavation and anchoring processes are carried out alternately in the limited space at the head of the excavation working face. Excavation and support cannot be carried out continuously. The degree of mechanization is low, the process connection is poor, the anchor and cable support time is long, and there are common major problems such as unbalanced excavation and anchoring, low tunneling efficiency, and poor safety.

[0003] With the lengthening of the coal mining face drift and the acceleration of mining advancement, higher requirements are placed on the tunnel excavation speed. However, the traditional anchor support method has low safety factor and production efficiency, and high labor cost, which seriously restricts the development of high-yield and high-efficiency coal mine working faces. Summary of the invention

[0004] The purpose of the present invention is to provide a multi-arm anchor drilling rig and a multi-degree-of-freedom cantilever tunneling machine in a coal mine to solve the problems in the prior art that tunnel excavation and support cannot be operated continuously, the support labor intensity is high, the efficiency is low, and the safety is poor, improve the working environment of the working face, shorten the support operation time, improve the safety of anchoring and support operations and the footage efficiency, and realize continuous mechanized operations of excavation, temporary support, and anchor and cable support.

[0005] The first aspect of the disclosed embodiment provides a multi-arm anchor drilling rig and multi-degree-of-freedom cantilever tunneling machine for an underground coal mine, comprising a tunneling system and a front drilling system, an auxiliary drilling system and a pushing system arranged on the tunneling system; the pushing system is symmetrically arranged on both sides of the body of the tunneling system, and can move forward and backward relative to the tunneling system; the front drilling system is arranged at the front end of the pushing system, and the pushing system drives the front drilling system to move forward and backward; the auxiliary drilling system is arranged at the upper part of the pushing system, and the pushing system drives the auxiliary drilling system to move forward and backward; the tunneling machine also includes a temporary support system arranged at the upper part of the cutting device of the tunneling system; the temporary support system has a folded state and an extended state; when the tunneling machine performs tunneling operations, the temporary support system is in the folded state; when the tunneling machine performs supporting operations, the temporary support system is in the extended state.

[0006] Optionally, the tunnel boring machine also includes a shovel device; the shovel device is arranged at the front end of the tunnel boring system body; the shovel device can flip up and down around its rear end pin shaft, when the tunnel boring machine performs tunneling operations, the front end of the shovel device is lifted upward to load materials along the bottom plate of the body, and when the tunnel boring machine performs supporting operations, the front end of the shovel device is flipped downward so that the rear end of the shovel device can support the bottom plate of the body.

[0007] Optionally, the tunnel boring machine also includes a rear support device; the rear support device is arranged at the rear end of the tunnel boring system body; the rear support device can flip up and down around its rear end pin shaft, when the tunnel boring machine performs tunneling operations, the front end of the rear support device is lifted upward, and when the tunnel boring machine performs supporting operations, the rear end of the rear support device flips downward so that the front end of the rear support device can support the bottom plate of the body.

[0008] Optionally, the temporary support system includes a base plate, a support assembly and a flip cylinder, and has a folded state and an extended state; the support assembly is rotatably mounted on the front end of the base plate, one end of the flip cylinder is rotatably connected and hinged to the rear end of the base plate, and the other end of the flip cylinder is hinged to the rear end of the support assembly; when the temporary support system is in the folded state, the support assembly is located directly above the base plate; during the process of the temporary support system switching from the folded state to the extended state, the support assembly moves upward and forward relative to the base plate.

[0009] Optionally, the support assembly includes a connecting member, an adjusting member and a support body; one end of the connecting member is hinged to the front end of the base plate, the other end of the connecting member is hinged to the rear end of the support body, and the middle part of the connecting member is hinged to the flip cylinder; the adjusting member is installed between the connecting member and the support body, and is used to drive the support body to rotate relative to the connecting member.

[0010] Optionally, the connecting member includes a telescopic cylinder.

[0011] Optionally, the adjusting member includes a supporting cylinder, one end of which is rotatably mounted on the connecting member, and the other end of the supporting cylinder is hinged to the supporting body, and its hinge point is located in front of the hinge point between the connecting member and the supporting body.

[0012] Optionally, the support assembly further includes a left flip beam and a right flip beam respectively located on the left and right sides of the support body; the left flip beam is rotatably connected to the support body, and the right flip beam is rotatably connected to the support body.

[0013] Optionally, the support assembly also includes a front telescopic beam and a front telescopic cylinder; the front telescopic beam is slidably mounted on the support body, one end of the front telescopic cylinder is connected to the support body, and the other end of the front telescopic cylinder is connected to the front telescopic beam.

[0014] Optionally, the front end of the base plate is inclined downward.

[0015] The main technical effects achieved by the embodiments of the present disclosure are: the tunneling system, the front drilling system, the auxiliary drilling system and the temporary support system are integrated and designed for tunneling and support construction operations in underground coal mine tunnels, realizing continuous tunneling and support operations, improving the tunneling and support operation efficiency, and ensuring the safety of operators; at the same time, the front drilling machine system and the auxiliary drilling system are arranged on both sides of the tunneling system, which does not affect the tunneling operation of the cantilever tunneling machine, avoids the mutual influence of tunneling and support operations, and can simultaneously support the roof and side walls on both sides of the tunnel, thereby improving the support operation efficiency; the front drilling system and the auxiliary drilling system realize the horizontal movement, up and down lifting, vertical, horizontal rotation and other multi-dimensional movements of the front anchor drilling mechanism and the auxiliary anchor drilling mechanism through the pushing system, the front drilling lifting mechanism and the auxiliary drilling lifting mechanism, thereby realizing the full-section support operation of the underground coal mine tunnel and improving the support operation efficiency; the temporary support system enables personnel to perform support operations in a limited safety protection space, thereby ensuring personnel safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of a multi-arm anchor drill rig with multiple degrees of freedom cantilever tunneling machine in a coal mine in an embodiment of the present disclosure;

[0017] Figure 2 A schematic diagram of a push system in one embodiment of the present disclosure Figure 1 ;

[0018] Figure 3 A schematic diagram of a push system in one embodiment of the present disclosure Figure 2 ;

[0019] Figure 4 A schematic diagram of the structure of a front drilling system in one embodiment of the present disclosure Figure 1 ;

[0020] Figure 5 A schematic diagram of the structure of a front drilling system in one embodiment of the present disclosure Figure 2 ;

[0021] Figure 6 A structural diagram of a drilling assistance system in one embodiment of the present disclosure Figure 1 ;

[0022] Figure 7 A structural diagram of a drilling assistance system in one embodiment of the present disclosure Figure 2 ;

[0023] Figure 8 It is a structural schematic diagram of a temporary support system in one embodiment of the present disclosure.

[0024] Explanation of the reference numerals in the accompanying drawings: 1. Excavation system; 2. Front drilling system; 3. Assist drilling system; 4. Temporary support system; 5. Pushing system; 6. Cutting device; 7. Shovel device; 8. Transport device; 9. Body device; 10. Walking device; 11. Hydraulic system; 12. Electrical system; 13. Rear support device; 14. Cylinder fixing seat; 15. Slide fixing seat; 16. First pushing cylinder; 17. Telescopic arm outer cylinder; 18. Telescopic arm inner cylinder; 19. Second pushing cylinder; 20. Assist sliding base; 21. Assist sliding seat; 22. Third pushing cylinder; 23. First rotating cylinder; 24. First supporting column; 25. Horizontal sliding fixed frame; 26. First feeding cylinder; 27. Front sliding base; 28. Front sliding seat; 29. ​​Front drilling lifting frame; 30. Second feeding cylinder; 31. Second supporting column; 32. Front lifting mechanism Fixed frame; 33, front drilling and lifting mechanism; 34, front anchor drilling mechanism; 35, second rotating cylinder, 36, front anchor drilling mounting seat; 37, working platform; 38, auxiliary anchor drilling mechanism; 39, auxiliary drilling and lifting mechanism; 40, auxiliary lifting fixed frame; 41, auxiliary lifting seat; 42, third rotating cylinder; 43, auxiliary anchor drilling mounting seat; 44, auxiliary drilling and lifting frame; 45, third supporting column; 46; auxiliary lifting mechanism fixed frame; 47, upper supporting plate; 48, sliding seat; 49, fourth supporting column; 50, auxiliary push cylinder; 51, lower supporting plate; 52, third feed cylinder; 53, third rotating cylinder fixing seat; 54, bottom plate; 55, turning cylinder; 56, telescopic cylinder; 57, first supporting shaft; 58, supporting cylinder; 59, front telescopic beam; 60, turning beam; 61, supporting body; 62, second supporting shaft. DETAILED DESCRIPTION

[0025] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The modes described in the following exemplary embodiments do not represent all modes consistent with the present disclosure. Instead, they are merely examples of devices consistent with some aspects of the present disclosure as detailed in the appended claims.

[0026] The terms used in the present disclosure are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure. Unless otherwise defined, the technical terms or scientific terms used in the present disclosure should be understood by people with ordinary skills in the field to which the present disclosure belongs. The words "first", "second" and similar words used in the present disclosure specification and claims do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, similar words such as "one" or "one" do not indicate a quantitative limitation, but indicate that there is at least one, and if only "one" is referred to, it will be separately described. "Multiple" or "several" means two or more. Unless otherwise specified, similar words such as "front", "rear", "lower" and / or "upper" are only for the convenience of explanation, and are not limited to one position or one spatial orientation. Similar words such as "include" or "comprise" mean that the elements or objects appearing in front of "include" or "comprise" cover the elements or objects listed after "include" or "comprise" and their equivalents, and do not exclude other elements or objects. "Connected" or "connected" and similar words are not limited to physical or mechanical connections, and may include electrical connections, whether direct or indirect. The singular forms "a", "said" and "the" used in this disclosure and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0027] like Figure 1 As shown, the embodiment of the present disclosure provides a multi-arm anchor drilling rig multi-degree-of-freedom cantilever tunneling machine for a coal mine, including a tunneling system 1, a front drilling system 2, an auxiliary drilling system 3, a temporary support system 4, and a push system 5. The front drilling system 2, the auxiliary drilling system 3, the temporary support system 4, and the push system 5 are all arranged on the tunneling system 1, and the push system 5 is symmetrically arranged on both sides of the body of the tunneling system 1, and moves forward and backward relative to the tunneling system 1. The front drilling system 2 is arranged at the front end of the push system 5, and the push system 5 drives the front drilling system 2 to move forward and backward, and the auxiliary drilling system 3 is arranged on the upper part of the push system 5. The push system 5 drives the auxiliary drilling system 3 to move forward and backward, and the temporary support system 4 is arranged on the upper part of the cutting device of the tunneling system 1 to provide a safe space for the support operation of the front drilling system 2.

[0028] The excavation system 1 is provided with a cutting device 6, a shovel device 7, a transport device 8, a body device 9, a traveling device 10, a hydraulic system 11, an electrical system 12, and a rear support device 13.

[0029] The cutting device 6 is arranged on the turntable at the front end of the body device 9. The cutting device 6 can swing up and down and left and right around the turntable. When the cantilever type tunnel boring machine is excavating, the cutting device 6 is lifted to perform the cutting operation, and the cutting device 6 falls in the supporting state.

[0030] The shovel device 7 is arranged at the front end of the body device 9, and the shovel device 7 can flip up and down around the pin shaft at its rear end. When the cantilever tunneling machine is excavating, the front end of the shovel device 7 is lifted upward to load materials along the bottom plate of the body device 9. In the supporting state, the front end of the shovel device 7 is flipped downward to support the bottom plate to stabilize the fuselage.

[0031] The transport device 8 is arranged in the middle of the body device 9, and the front end of the transport device 8 overlaps with the rear end of the shovel device 7 for transporting materials.

[0032] The rear support device 13 is arranged at the rear end of the body device 9. The rear support device 13 can be flipped up and down around its pin shaft. When the cantilever tunneling machine is excavating, the rear support device 13 is lifted upward. In the supporting state, the rear support device 13 is flipped downward to support the bottom plate of the body device 9 to stabilize the fuselage.

[0033] The traveling device 10 is arranged on the left and right sides of the machine body device 9 to drive the cantilever type tunnel boring machine to move forward, backward and turn.

[0034] The hydraulic system 11 provides a hydraulic power source for the operations of the excavation system 1, the front drilling system 2, the auxiliary drilling system 3, the temporary support system 4 and the pushing system 5.

[0035] The electrical system 12 provides power for the pump station motor, cutting motor, lighting and electrical components of the tunneling system 1, and controls the start, stop, movement, cutting of the tunneling system 1, the actions of the front drilling system 2, the auxiliary drilling system 3, the temporary support system 4 and the pushing system 5.

[0036] like Figure 2 and Figure 3 As shown, the pushing system 5 is provided with a cylinder fixing seat 14, a slide fixing seat 15, a first pushing cylinder 16, a telescopic arm outer cylinder 17, a telescopic arm inner cylinder 18, a second pushing cylinder 19, an auxiliary sliding base 20, an auxiliary sliding seat 21, a third pushing cylinder 22, and a first rotating cylinder 23.

[0037] The oil cylinder fixing seat 14 and the slideway fixing seat 15 are arranged on the track guard plate of the walking device 10 .

[0038] The telescopic arm outer tube 17 is disposed in the slide groove of the slideway fixing seat 15 , and the telescopic arm outer tube 17 is slidably matched with the slideway fixing seat 15 .

[0039] A first push cylinder 16 is arranged between the cylinder fixing seat 14 and the telescopic arm outer cylinder 17. The piston rod end of the first push cylinder 16 is hingedly connected to the cylinder fixing seat 14 through a pin shaft, and the cylinder barrel end of the first push cylinder 16 is hingedly connected to the ear seats on both sides of the telescopic arm outer cylinder 17 through a pin shaft.

[0040] The telescopic arm outer tube 17 is driven to move forward and backward relative to the traveling device 10 by the extension and retraction of the first push cylinder 16 .

[0041] The telescopic arm inner cylinder 18 is disposed in the telescopic arm outer cylinder 17 , and the telescopic arm inner cylinder 18 and the telescopic arm outer cylinder 17 cooperate and slide.

[0042] A second push cylinder 19 is arranged between the telescopic arm inner cylinder 18 and the telescopic arm outer cylinder 17. The piston rod end of the second push cylinder 19 is hingedly connected to the front end ear seat of the telescopic arm inner cylinder 18 through a pin shaft, and the cylinder end of the second push cylinder 19 is hingedly connected to the rear end ear seat of the telescopic arm outer cylinder 17 through a pin shaft.

[0043] The telescopic arm inner tube 18 is driven to slide forward and backward relative to the telescopic arm outer tube 17 by the second push cylinder 19 .

[0044] The auxiliary sliding base 20 is fixedly arranged on the upper part of the telescopic arm outer cylinder 17 , and the auxiliary sliding base 20 moves forward and backward along with the telescopic arm outer cylinder 17 .

[0045] The side sliding seat 21 is arranged on the side sliding base 20 , and the side sliding seat 21 slides in cooperation with the side sliding base 20 .

[0046] A third push cylinder 22 is arranged between the auxiliary sliding base 20 and the auxiliary sliding base 21, and the piston rod end of the third push cylinder 22 is hingedly connected to the front end ear seat of the auxiliary sliding base 21 through a pin shaft, and the cylinder barrel end of the third push cylinder 22 is hingedly connected to the rear end ear seat of the auxiliary sliding base 20 through a pin shaft.

[0047] The third push cylinder 22 is extended and retracted to drive the auxiliary sliding seat 21 to slide forward and backward relative to the auxiliary sliding base 20 .

[0048] The first rotary cylinder 23 is disposed at the front end of the telescopic arm inner cylinder 18 , and the rotary shaft at the upper portion of the first rotary cylinder 23 can rotate within a range of 180° around its vertical axis.

[0049] like Figure 4 and Figure 5 As shown, the front drilling system 2 is provided with a first support column 24, a horizontal sliding fixed frame 25, a first feed cylinder 26, a front sliding base 27, a front sliding seat 28, a front drilling lifting frame 29, a second feed cylinder 30, a second support column 31, a front lifting mechanism fixed frame 32, a front drilling lifting mechanism 33, a front anchor drilling mechanism 34, a second rotating cylinder 35, a front anchor drilling mounting seat 36, and a working platform 37.

[0050] The front drilling system 2 is arranged at the front end of the pushing system 5, and the forward and backward movement of the telescopic arm inner tube 18 drives the front drilling system 2 to move forward and backward.

[0051] The front sliding base 27 is disposed on the rotating shaft of the first rotating oil cylinder 23 , and the first rotating oil cylinder 23 drives the front sliding base 27 to rotate around its vertical axis.

[0052] The front sliding base 27 is provided with a first support column 24 , a horizontal sliding fixing frame 25 , and a first feeding cylinder 26 .

[0053] The front sliding seat 28 is disposed on the first support column 24 , and the front sliding seat 28 is slidably matched with the first support column 24 . A certain position of the front sliding seat 28 is connected to the transmission chain of the first feed cylinder 26 .

[0054] The first feeding oil cylinder 26 is disposed on the front sliding base 27 , and the first feeding oil cylinder 26 drives the front sliding base 28 to move horizontally relative to the front sliding base 27 .

[0055] The front lifting mechanism fixing frame 32 is arranged on the front sliding base 27 , and a certain position of the front lifting mechanism fixing frame 32 is connected to the transmission chain of the first feeding oil cylinder 26 .

[0056] The front drilling lifting frame 29 is disposed on the second support column 31 , the front drilling lifting frame 29 is slidably matched with the second support column 31 , and the front drilling lifting frame 29 is connected to the transmission chain of the second feeding cylinder 30 .

[0057] The second feed oil cylinder 30 drives the front drilling lifting frame 29 to move up and down relative to the front sliding seat 28 .

[0058] The second rotary cylinder 35 is disposed on the front drilling lifting frame 29, and the rotary shaft of the second rotary cylinder 35 can rotate within a range of 180° around its horizontal axis.

[0059] The front anchor drilling mechanism 34 is fixed to the end of the rotating shaft of the second rotating oil cylinder 35 through the front anchor drilling mounting seat 36. The front anchor drilling mechanism 34 rotates in the vertical plane with the rotating shaft of the second rotating oil cylinder 35.

[0060] The front drilling system 2 is arranged on the left and right sides of the tunneling system 1 and is used for anchor rod and cable support of the tunnel roof and side walls.

[0061] like Figure 6 and Figure 7As shown, the auxiliary drilling system 3 is provided with an auxiliary anchor drilling mechanism 38, an auxiliary drilling lifting mechanism 39, an auxiliary lifting fixed frame 40, an auxiliary lifting seat 41, a third rotating cylinder 42, an auxiliary anchor drilling mounting seat 43, an auxiliary drilling lifting frame 44, a third support column 45, an auxiliary lifting mechanism fixed frame 46, an upper support plate 47, a sliding seat 48, a fourth support column 49, an auxiliary pushing cylinder 50, a lower support plate 51, a third feed cylinder 52, and a third rotating cylinder fixed seat 53.

[0062] The side lifting seat 41 is arranged on the side sliding seat 21 , and the side lifting seat 41 slides forward and backward along with the side sliding seat 21 .

[0063] The third rotary cylinder 42 is disposed on a third rotary cylinder fixing seat 53 , and the third rotary cylinder fixing seat 53 is disposed on the auxiliary drilling lifting frame 44 , and rises and falls with the auxiliary drilling lifting frame 44 .

[0064] The auxiliary anchor drilling mechanism 38 is arranged on the rotating shaft end of the third rotating oil cylinder 42 through the auxiliary drilling machine mounting seat 43.

[0065] The third rotary cylinder 42 can rotate 180° around its axis.

[0066] The cylinder end of the auxiliary push cylinder 50 is arranged on the auxiliary lifting fixed frame 40, and the piston rod end of the auxiliary push cylinder 50 is arranged on the upper support plate 47. The piston rod of the auxiliary push cylinder 50 is extended and retracted to drive the upper support plate 47 to move up and down.

[0067] A third feed cylinder 52 , a third support column 45 , and a fourth support column 49 are disposed between the upper support plate 47 and the lower support plate 51 .

[0068] The third feed oil cylinder 52 drives the gang lifting seat 36 to rise and unfold or to fall and fold relative to the gang lifting fixing frame 40 .

[0069] The auxiliary drilling lifting frame 44 is disposed on the third supporting column 45 , and the auxiliary drilling lifting frame 44 and the third supporting column 45 are slidably matched.

[0070] The third feed oil cylinder 52 drives the auxiliary drilling lifting frame 44 to move up and down.

[0071] The auxiliary drilling lifting frame 44 is lifted up and down to drive the auxiliary anchor drilling mechanism 38 to lift up and down in the vertical direction.

[0072] The rotational movement of the shaft end of the third rotary oil cylinder 42 drives the anchor drilling mechanism 38 to rotate and swing.

[0073] The auxiliary drilling system 3 is arranged on the auxiliary sliding seat 21 of the pushing system 5, and the forward and backward sliding of the auxiliary sliding seat 21 drives the auxiliary drilling system 3 to move forward and backward.

[0074] The auxiliary drilling system 3 is arranged on the left and right sides of the excavation system 1, and is used for anchor rod and cable support of the lagging side walls of the tunnel.

[0075] like Figure 8 As shown, the temporary support system 4 is provided with a bottom plate 54, a turning cylinder 55, a telescopic cylinder 56, a first support shaft 57, a support cylinder 58, a front telescopic beam 59, a turning beam 60, a support body 61, and a second support shaft 62. The telescopic cylinder 56, the first support shaft 57, the support cylinder 58, the front telescopic beam 59, the turning beam 60, the support body 61, and the second support shaft 62 cooperate to form a support assembly. When the temporary support system is in a folded state, the support assembly is located directly above the bottom plate; when the temporary support system switches from a folded state to an extended state, the support assembly moves upward and forward relative to the bottom plate.

[0076] It should be noted that the telescopic oil cylinder 56 in the embodiment of the present disclosure is a connecting piece between the support body 61 and the bottom plate 54; by setting the connecting piece as the telescopic oil cylinder 56, the connecting piece, in addition to being used to connect the support body 61 and the bottom plate 54, can also adjust the height of the support body by telescoping up and down when the temporary support system 4 is in the extended state. Of course, in other embodiments, the connecting piece can also be a connecting rod, an electric telescopic rod, etc., and the present disclosure is not limited to this.

[0077] The supporting oil cylinder 58 in the embodiment of the present disclosure is an adjusting member arranged between the supporting body 61 and the connecting member. By setting the adjusting member as the supporting oil cylinder, it is convenient to uniformly control the entire tunnel boring machine through the hydraulic circuit. Of course, in other embodiments, the adjusting member can also be a motor, an electric telescopic rod, etc., and the present disclosure does not limit this.

[0078] The bottom plate 54 is fixedly arranged on the upper part of the cutting device 6 and is inclined relative to the cutting device 6. The downwardly inclined design of the front end of the bottom plate helps the support assembly of the temporary support system to be in a horizontal state when it is extended, thereby having the maximum support space.

[0079] The first support shaft 57 and the second support shaft 62 are disposed on a fixing seat of the bottom plate 54 .

[0080] The cylinder barrel end of the tilting oil cylinder 55 is arranged on the shaft end of the second supporting shaft 62 , and the piston rod end of the tilting oil cylinder 55 is arranged on the supporting seat of the cylinder barrel of the telescopic oil cylinder 56 .

[0081] The piston rod end of the supporting oil cylinder 58 is arranged on the hinged seat of the supporting body 61 , and the cylinder barrel end of the supporting oil cylinder 58 is arranged on the ear seat of the cylinder barrel of the telescopic oil cylinder 56 .

[0082] The piston rod end of the telescopic oil cylinder 56 is arranged on the hinge seat of the supporting body 61 , and the cylinder barrel end of the telescopic oil cylinder 56 is arranged on the shaft end of the first supporting shaft 57 .

[0083] The flip beam 60 is hingedly disposed on the left and right sides of the supporting body 61 , and the flip beam 60 can be flipped and unfolded to a horizontal position relative to the supporting body 61 .

[0084] The front telescopic beam 59 is telescopically movable forward and backward relative to the supporting body 61 by means of a built-in front telescopic oil cylinder.

[0085] The temporary support system 4 is arranged on the upper part of the cutting device 6 of the excavation system 1. The temporary support system 4 can be retracted and expanded relative to the excavation system 1. When the anchor digger is in the excavation state, the temporary support system 4 is retracted. When the anchor digger is in the supporting state, the temporary support system 4 is expanded and extends to the top of the working platform of the front drilling system 2, ensuring that personnel have a certain safety space when constructing on the working platform 37.

[0086] The above are only preferred embodiments of the present disclosure and are not intended to limit the present disclosure. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present disclosure should be included in the scope of protection of the present disclosure.

Claims

1. A multi-arm anchor drill rig with multiple degrees of freedom cantilever tunneling machine in a coal mine, comprising a tunneling system and a front drilling system, an auxiliary drilling system and a pushing system arranged on the tunneling system; the pushing system is symmetrically arranged on both sides of the machine body of the tunneling system and can move forward and backward relative to the tunneling system; the front drilling system is arranged at the front end of the pushing system, and the pushing system drives the front drilling system to move forward and backward; the auxiliary drilling system is arranged at the upper part of the pushing system, and the pushing system drives the auxiliary drilling system to move forward and backward; it is characterized in that The tunnel boring machine further comprises a temporary support system arranged on the upper part of the cutting device of the tunnel boring system; the temporary support system has a folded state and an extended state; when the tunnel boring machine performs tunnel boring operation, the temporary support system is in the folded state; When the tunnel boring machine performs supporting operations, the temporary supporting system is in the extended state.

2. The multi-arm anchor drilling rig multi-degree-of-freedom cantilever type tunneling machine for coal mines according to claim 1, characterized in that: The tunnel boring machine also includes a shovel device; the shovel device is arranged at the front end of the tunnel boring system body; the shovel device can flip up and down around its rear end pin shaft. When the tunnel boring machine performs tunneling operations, the front end of the shovel device is lifted upward to load materials along the bottom plate of the body. When the tunnel boring machine performs supporting operations, the front end of the shovel device is flipped downward so that the rear end of the shovel device can support the bottom plate of the body.

3. The multi-arm anchor drilling rig multi-degree-of-freedom cantilever type tunneling machine for coal mines according to claim 1, characterized in that: The tunnel boring machine also includes a rear support device; the rear support device is arranged at the rear end of the tunnel boring system body; the rear support device can flip up and down around its rear end pin shaft, when the tunnel boring machine performs tunneling operations, the front end of the rear support device is lifted upward, when the tunnel boring machine performs supporting operations, the rear end of the rear support device flips downward so that the front end of the rear support device can support the bottom plate of the body.

4. The multi-arm anchor drilling rig multi-degree-of-freedom cantilever type tunneling machine for coal mines according to claim 1, characterized in that: The temporary support system comprises a base plate, a support assembly and a flip cylinder, and has a folded state and an extended state; the support assembly is rotatably mounted on the front end of the base plate, one end of the flip cylinder is rotatably connected and hinged to the rear end of the base plate, and the other end of the flip cylinder is hinged to the rear end of the support assembly; when the temporary support system is in the folded state, the support assembly is located directly above the base plate; During the switching of the temporary support system from the folded state to the extended state, the support assembly moves upward and forward relative to the base plate.

5. The multi-arm anchor drilling rig multi-degree-of-freedom cantilever type tunneling machine for coal mines according to claim 4, characterized in that: The support assembly includes a connecting piece, an adjusting piece and a supporting body; one end of the connecting piece is hinged to the front end of the base plate, the other end of the connecting piece is hinged to the rear end of the supporting body, and the middle part of the connecting piece is hinged to the flip cylinder; the adjusting piece is installed between the connecting piece and the supporting body, and is used to drive the supporting body to rotate relative to the connecting piece.

6. The multi-arm anchor drilling rig multi-degree-of-freedom cantilever type tunneling machine for coal mines according to claim 5, characterized in that: The connecting member comprises a telescopic cylinder.

7. The multi-arm anchor drilling rig multi-degree-of-freedom cantilever type tunneling machine for coal mines according to claim 5, characterized in that: The adjusting member comprises a supporting oil cylinder, one end of which is rotatably mounted on the connecting member, and the other end of which is hinged to the supporting body, and a hinge point thereof is located in front of a hinge point between the connecting member and the supporting body.

8. The multi-arm anchor drilling rig multi-degree-of-freedom cantilever type tunneling machine for coal mines according to claim 5, characterized in that: The support assembly also includes a left flip beam and a right flip beam respectively located on the left and right sides of the support body; the left flip beam is rotatably connected to the support body, and the right flip beam is rotatably connected to the support body.

9. The multi-arm anchor drilling rig multi-degree-of-freedom cantilever type tunneling machine for coal mines according to claim 5, characterized in that: The support assembly also includes a front telescopic beam and a front telescopic cylinder; the front telescopic beam is slidably mounted on the support body, one end of the front telescopic cylinder is connected to the support body, and the other end of the front telescopic cylinder is connected to the front telescopic beam.

10. The multi-arm anchor drilling rig multi-degree-of-freedom cantilever type tunneling machine for coal mines according to claim 4, characterized in that: The front end of the bottom plate is inclined downward.

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