Branch anchor cantilever type tunneling machine for underground coal mine tunneling

Abstract

The invention discloses a supporting and anchoring cantilever type tunneling machine for underground coal mine tunneling. The heading machine comprises a heading device, an anchor rod pushing device, an anchor rod drilling device and a temporary supporting device, the temporary supporting device is arranged at the front end of the tunneling device and has a folded state and an extended state; when the temporary supporting device is in the folded state, the width of the temporary supporting device is smaller than that of the tunneling device, and the height of the temporary supporting device is smaller than that of the anchor rod drilling device; when the temporary supporting device is in the stretching state, the width of the temporary supporting device is larger than that of the tunneling device, and the height of the temporary supporting device is larger than that of the anchor rod drilling device so that a safe space can be provided for supporting operation of the anchor rod drilling device.

Description

Technical Field

[0001] The present invention belongs to the technical field of coal mine tunnel equipment, and in particular relates to a cantilever type tunneling machine for digging, supporting and anchoring in underground coal mines. 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 or anchor drilling vehicles are used for anchor and cable support. Excavation and support are mostly carried out in separate modes. After the operation of the tunneling machine is completed, the anchor drilling rig is manually transported or the crawler anchor drilling vehicle is moved to the front of the tunneling machine for support operations. The excavation and support processes are carried out alternately in the limited space in front of the excavation working face. There are main problems such as poor tunnel working environment, poor process connection, many support operators, low degree of mechanization, long anchor support time, high labor intensity 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 and support speed. However, the traditional anchor support method has a low safety factor and production efficiency, and a large labor cost investment, and cannot meet the development needs of rapid excavation and efficient support in coal mines. Summary of the invention

[0004] The purpose of the present invention is to provide a cantilever tunneling machine for digging, supporting and anchoring in a coal mine, so as to solve the problems in the prior art that tunnel digging and supporting 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 supporting operations and the advancement efficiency, and realize continuous mechanized operation of tunneling and anchor support.

[0005] A first aspect of an embodiment of the present disclosure provides a cantilever tunneling machine for digging, supporting and anchoring in an underground coal mine, the tunneling machine comprising a tunneling device and an anchor drilling device and a temporary support device arranged on the tunneling device; the temporary support device has a folded state and an extended state; when the temporary support device is in the folded state, the width of the temporary support device is smaller than the width of the tunneling device, and the height of the temporary support device is smaller than the height of the anchor drilling device, and the temporary support device is located behind the anchor drilling device; when the temporary support device is in the extended state, the width of the temporary support device is greater than the width of the tunneling device, and the height of the temporary support device is greater than the height of the anchor drilling device, and the temporary support device is at least partially located above the anchor drilling device.

[0006] The main technical effect achieved by the disclosed embodiment is that this design enables the tunnel boring machine to perform bolt support operations simultaneously during the tunneling process, thereby improving the operating efficiency. The folding and extension states of the temporary support device allow the machine to be flexibly adjusted in different working states to adapt to different space restrictions and operating requirements, while providing the necessary safety space for the bolt drilling device.

[0007] Optionally, during the process of the temporary support device switching from the folded state to the extended state, the temporary support device moves toward the anchor drilling rig of the anchor drilling device and can extend above the working platform of the anchor drilling device.

[0008] The main technical effect achieved by the embodiment of the present disclosure is that in the process of switching the temporary support device from a folded state to an extended state, its ability to move toward the anchor drilling rig and extend above the working platform provides additional protection for the operator and ensures safety during the anchor support operation.

[0009] Optionally, the temporary support device includes a base plate, a support assembly and an extension cylinder; the base plate is fixedly mounted on the excavation device, one end of the extension cylinder is rotatably connected to the front end of the base plate, and the other end of the extension cylinder is connected to the rear end of the support assembly; when the extension cylinder rotates in a direction away from the base plate, the temporary support device switches from the folded state to the extended state.

[0010] The main technical effect achieved by the embodiment of the present disclosure is that the folding and extension functions of the temporary support device are realized through the design of the bottom plate, the support assembly and the extension cylinder. This design enables the temporary support device to be compactly folded to reduce space occupation, and at the same time, it can be quickly unfolded when needed to provide necessary support.

[0011] Optionally, the temporary support device further comprises a flip cylinder, one end of which is hinged to the base plate, and the other end of which is hinged to the extension cylinder, and the flip cylinder is used to drive the extension cylinder to rotate.

[0012] The main technical effect achieved by the embodiment of the present disclosure is that the addition of the flip cylinder makes the rotation of the extension cylinder more stable and controllable, thereby improving the reliability and efficiency of the temporary support device switching from the folded state to the extended state.

[0013] Optionally, the temporary support device also includes a supporting cylinder; one end of the supporting cylinder is hinged to the base plate, the other end of the supporting cylinder is hinged to the support assembly, and the hinge point of the supporting cylinder on the support assembly is located in front of the hinge point of the extension cylinder on the support assembly.

[0014] The main technical effect achieved by the embodiments of the present disclosure is that the provision of the supporting oil cylinder makes the extension and folding of the support assembly more stable and controllable, thereby improving the operational efficiency and safety of the temporary support device.

[0015] Optionally, the support assembly includes a support body and a flip beam located on one side of the support body; the flip beam is rotatably connected to the support body.

[0016] The main technical effect achieved by the embodiment of the present disclosure is that the flip beam included in the support assembly increases the flexibility and adaptability of the temporary support device, so that the support device can better adapt to different working environments and needs.

[0017] Optionally, the other end of the extension cylinder is hinged to the flip beam.

[0018] The main technical effect achieved by the disclosed embodiment is that the extension cylinder can extend and retract while rotating, which, on the one hand, increases the rising stroke of the support body, and on the other hand, can also be used to drive the flip beam to flip, saving costs.

[0019] Optionally, the front end of the base plate is inclined downward.

[0020] The main technical effect achieved by the disclosed embodiment is that the downward tilt design of the front end of the base plate helps the temporary support device to better fit the contour of the tunnel when extended, thereby improving the support effect and operation safety.

[0021] Optionally, the supporting body is telescopic in the front-rear direction.

[0022] The main technical effect achieved by the embodiments of the present disclosure is that the forward and backward telescopic capability of the support body enables the temporary support device to adjust its length according to the actual working environment, thereby improving the applicability and flexibility of the support device.

[0023] Optionally, the supporting body includes a top beam and a front telescopic beam; the front telescopic beam can be telescopically moved forward and backward relative to the top beam through a built-in front telescopic cylinder.

[0024] The main technical effect achieved by the disclosed embodiment is: by arranging a top beam and a front telescopic beam in the support body, and allowing the front telescopic beam to telescope forward and backward relative to the top beam through a built-in front telescopic cylinder, this design enhances the adaptability and flexibility of the temporary support device. The telescopic function of the front telescopic beam enables the support device to be adjusted according to the actual tunnel width and support requirements, thereby providing more accurate and effective support. This design not only improves the support efficiency, but also allows the support range to be quickly adjusted under different tunnel conditions to ensure operational safety, while also reducing the equipment adjustment time caused by changes in tunnel size and improving operational efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of a cantilever type tunnel boring machine for digging, supporting and anchoring in a coal mine in an embodiment of the present disclosure;

[0026] Figure 2 The structure of an anchor rod pushing device in one embodiment of the present disclosure is shown in FIG. Figure 1 ;

[0027] Figure 3 The structure of an anchor rod pushing device in one embodiment of the present disclosure is shown in FIG. Figure 2 ;

[0028] Figure 4 A structural diagram of an anchor drilling device in one embodiment of the present disclosure Figure 1 ;

[0029] Figure 5 A structural diagram of an anchor drilling device in one embodiment of the present disclosure Figure 2 ;

[0030] Figure 6 It is a structural schematic diagram of a temporary support device in one embodiment of the present disclosure.

[0031] Explanation of the reference numerals: 1. Excavation device; 2. Anchor rod pushing device; 3. Anchor rod drilling device; 4. Temporary support device; 5. Cutting part; 6. Shipping part; 7. Transport part; 8. Main body; 9. Traveling part; 10. Hydraulic pump station; 11. Electrical control; 12. Rear support part; 13. Slide rail device; 14. Traveling trolley device; 15. Cantilever beam structure; 16. Cylinder fixing seat; 17. Slideway fixing seat; 18. First pushing cylinder; 19. Slide rail; 20. First rack rail; 21. First track surface; 22. Second track surface; 23. Driving motor; 24. I-beam; 25. Pulley block; 26. Upper pulley block; 27. Lower pulley block; 28. First Pulley block; 29, second pulley block; 30, third pulley block; 31, fourth pulley block; 32, fifth pulley block; 33, sixth pulley block; 34, second rack; 35, cantilever beam; 36, third track surface; 37, first rotating cylinder; 38, first support column; 39, horizontal sliding fixed frame; 40, first feed cylinder; 41, front sliding base; 42, front sliding seat; 43, second rotating cylinder; 44, anchor drilling rig; 45, standing platform; 46, bottom plate; 47, flip cylinder; 48, extension cylinder; 49, first support shaft; 50, support cylinder; 51, front telescopic beam; 52, flip beam; 53, top beam; 54, second support shaft. DETAILED DESCRIPTION

[0032] 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.

[0033] 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.

[0034] like Figure 1As shown, an embodiment of the present disclosure provides a cantilever tunneling machine for digging, supporting and anchoring in an underground coal mine, comprising a tunneling device 1, an anchor pushing device 2, an anchor drilling device 3, and a temporary supporting device 4. The anchor pushing device 2, the anchor drilling device 3, and the temporary support device 4 are all arranged on the tunneling device 1. The anchor pushing device 2 is symmetrically arranged on both sides of the body of the tunneling device 1 and moves forward and backward relative to the tunneling device 1. The anchor drilling device 3 is arranged at the front end of the cantilever beam structure 15. The anchor pushing device 2 drives the front anchor drilling device 3 to move forward and backward. The temporary support device 4 is arranged on the upper part of the cutting portion 5 of the tunneling device 1, that is, the front end of the tunneling device 1, and has a folded state and an extended state; when the temporary support device 4 is in the folded state, the width of the temporary support device 4 is smaller than the width of the tunneling device 1, and the height of the temporary support device 4 is smaller than the height of the anchor drilling device 3, and the temporary support device 4 is located behind the anchor drilling device 3; when the temporary support device 4 is in the extended state, the width of the temporary support device 4 is greater than the width of the tunneling device 1, and the temporary support device 4 is at least partially located above the anchor drilling device 3. This design enables the tunnel boring machine to carry out bolt support operations simultaneously during the tunneling process, thus improving the operating efficiency. The forward and backward movement capabilities of the bolt pushing device 2 and the bolt drilling device 3 enable the machine to adapt to different operating environments and requirements. The folding and extension states of the temporary support device 4 allow the machine to be flexibly adjusted in different working states to adapt to different space restrictions and operating requirements, while providing the necessary safety space for the bolt drilling device 3.

[0035] The excavation device 1 includes a cutting part 5, a loading part 6, a transport part 7, a main body 8, a traveling part 9, a hydraulic pump station 10, an electrical control 11 and a rear support part 12. The cutting part 5 is arranged on a rotating table at the front end of the main body 8, and the cutting part 5 can swing up and down and left and right around the rotating table. When the cantilever type excavator is excavating, the cutting part 5 is lifted for cutting operation, and the cutting part 5 falls in the supporting state.

[0036] The loading part 6 is arranged at the front end of the main body 8, and the loading part 6 can be flipped up and down around the pin shaft at its rear end. When the cantilever tunneling machine is excavating, the front end of the loading part 6 is lifted upward to load materials along the bottom plate of the tunnel. In the supporting state, the front end of the loading part 6 is flipped downward to support the bottom plate to stabilize the machine body.

[0037] The transport part 7 is arranged in the middle of the main body 8, the front end of the transport part 7 overlaps with the rear end of the shipping part 6, and the rear end of the transport part 7 overlaps with the rear end of the main body 8 for transporting materials.

[0038] The rear support part 12 is arranged at the rear end of the main body 8. The rear support part 12 can flip up and down around its pin shaft. When the cantilever tunneling machine is excavating, the rear support part 12 is lifted upward. In the supporting state, the rear support part 12 flips downward to support the tunnel floor and stabilize the machine body.

[0039] The walking parts 9 are arranged on both sides of the main body 8 to drive the cantilever type tunnel boring machine to move forward, backward and turn.

[0040] The hydraulic pump station 10 provides a hydraulic power source for various actions of the excavation device 1, the anchor pushing device 2, the anchor drilling device 3, the temporary support device 4, etc.

[0041] The electrical control 11 provides power for the oil pump motor, cutting motor, lighting and electrical components of the tunneling device 1, and controls the start, stop, movement, cutting of the tunneling device 1, the anchor pushing device 2, the anchor drilling device 3, the temporary support device 4 and other actions.

[0042] like Figure 2 and Figure 3 As shown, the anchor rod pushing device 2 includes a slide rail device 13, a trolley device 14, and a cantilever beam structure 15. The trolley device 14 moves forward and backward relative to the slide rail device 13, and the cantilever beam structure 15 moves forward and backward relative to the trolley device 14.

[0043] The traveling trolley device 14 is arranged between the slide rail device 13 and the cantilever beam structure 15 .

[0044] The slide rail device 13 is provided with a cylinder fixing seat 16 , a slideway fixing seat 17 , a first push cylinder 18 , a slide rail 19 , a first rack rail 20 , a first track surface 21 , and a second track surface 22 .

[0045] The oil cylinder fixing seat 16 and the slideway fixing seat 17 are arranged on the crawler guard plate above the walking part 9.

[0046] A first rail surface 21 and a second rail surface 22 are provided on both sides of the slide rail 19 .

[0047] The first track surface 21 of the slide rail 19 is disposed in the slide groove of the slide rail fixing seat 17 , and the first track surface 21 is slidably matched with the slide rail fixing seat 17 .

[0048] The first track surface 21 is provided with an upper slide surface, a lower slide surface, and a side slide surface, and the upper slide surface, the lower slide surface, and the side slide surface are slidably matched with the upper slide groove, the lower slide groove, and the side slide groove of the slide fixing seat 17 respectively.

[0049] The second track surface 22 of the slide rail 19 is disposed between the lower pulley block 27 , and the second track surface 22 is slidably matched with the lower pulley block 27 .

[0050] The second track surface 22 is provided with an upper slide surface, a lower slide surface, and a side slide surface, which are respectively matched with the fourth pulley block 31, the fifth pulley block 32, and the sixth pulley block 33 of the lower pulley block.

[0051] A first push cylinder 18 is arranged between the cylinder fixing seat 16 and the first rack rail 20. The piston rod end of the first push cylinder 18 is hingedly connected to the cylinder fixing seat 16 through a pin, and the cylinder barrel end of the first push cylinder 18 is hingedly connected to the ear seat of the slide rail 19 through a pin.

[0052] The slide rail 19 is driven to move forward and backward relative to the tunnel boring machine by the telescopic movement of the first displacement cylinder 18 .

[0053] The first rack rail 20 is disposed on the upper surface of the slide rail 19 and arranged along the longitudinal direction of the slide rail 19 .

[0054] The traveling trolley device 14 is provided with a driving motor 23, an I-beam 24, a pulley block 25, an upper pulley block 26, a lower pulley block 27, a first pulley block 28, a second pulley block 29, a third pulley block 30, a fourth pulley block 31, a fifth pulley block 32, and a sixth pulley block 33.

[0055] The hydraulic motor 23 is arranged at the middle position of one side or both sides of the I-beam 24, located at the symmetrical center position of the four pulley groups 25, and the gear at the output shaft end of the hydraulic motor 23 is arranged between the first rack 20 and the second rack 34, and meshes with the two to achieve one-wheel dual drive.

[0056] The gear at the output shaft end of the hydraulic motor 23 rotates through the first rack 20 and the second rack 34 to drive the cantilever beam 35 to slide parallel to the slide rail 19 forward and backward.

[0057] Four pulley blocks 25 are symmetrically arranged and fixed on both sides of the I-beam 24 . The pulley blocks 25 include an upper pulley block 26 and a lower pulley block 27 .

[0058] The upper pulley block 26 includes a first pulley block 28 , a second pulley block 29 , and a third pulley block 30 .

[0059] The lower pulley block 27 is provided with a fourth pulley block 31 , a fifth pulley block 32 , and a sixth pulley block 33 .

[0060] The second track surface 22 is disposed in the fourth pulley block 31 , the fifth pulley block 32 , and the sixth pulley block 33 , and the second track surface 22 is in rolling cooperation with the fourth pulley block 31 , the fifth pulley block 32 , and the sixth pulley block 33 .

[0061] The third track surface 36 is disposed in the first pulley block 28 , the second pulley block 29 , and the third pulley block 30 , and the third track surface 36 is in rolling cooperation with the first pulley block 28 , the second pulley block 29 , and the third pulley block 30 .

[0062] The first pulley block 28, the second pulley block 29, the third pulley block 30, the fourth pulley block 31, the fifth pulley block 32, and the sixth pulley block 33 are each provided with two pulleys.

[0063] The traveling trolley device 14 moves forward and backward relative to the slide rail device 13 .

[0064] The cantilever beam structure 15 is provided with a second rack 34 , a cantilever beam 35 , a third track surface 36 , and a first rotating cylinder 37 .

[0065] The third track surfaces 36 are arranged on both sides of the cantilever beam 35 .

[0066] The third track surface 36 is disposed in the first pulley block 28, the second pulley block 29, and the third pulley block 30. The third track surface 36 is in rolling cooperation with the first pulley block 28, the second pulley block 29, and the third pulley block 30.

[0067] The third track surface 36 is provided with an upper slide surface, a lower slide surface, and a side slide surface, and the upper slide surface, the lower slide surface, and the side slide surface are respectively in rolling cooperation with the first pulley block 28, the second pulley block 29, and the third pulley block 30.

[0068] The second rack rail 34 is disposed below the bottom of the cantilever beam 35 and arranged longitudinally along the cantilever beam 35 .

[0069] The first rack rail 20 and the second rack rail 34 are arranged opposite to each other.

[0070] The cantilever beam structure 15 slides forward, extends or retracts under the drive of the traveling trolley device 14 .

[0071] The first rotary cylinder 37 is disposed at the front end of the cantilever beam 35 , and the upper rotary end of the first rotary cylinder 37 can rotate within a range of 180° around its vertical axis.

[0072] like Figure 4 and Figure 5 As shown, the anchor drilling device 3 is provided with a first support column 38, a horizontal sliding fixed frame 39, a first feed cylinder 40, a front sliding base 41, a front sliding seat 42, a second rotating cylinder 43, an anchor drilling machine 44, and a standing platform 45.

[0073] The anchor drilling device 3 is arranged at the front end of the cantilever beam structure 15 , and the forward and backward movement of the cantilever beam structure 15 drives the anchor drilling device 3 to move forward and backward.

[0074] The front sliding base 41 is disposed on the rotating shaft end of the first rotating oil cylinder 37 , and the first rotating oil cylinder 37 drives the front sliding base 41 to rotate around its vertical axis.

[0075] The front sliding base 41 is provided with a first support column 38 , a horizontal sliding fixing frame 39 , and a first feeding cylinder 40 .

[0076] The front sliding seat 42 is disposed on the first support column 38 , and the front sliding seat 42 is slidably matched with the first support column 38 . The bottom of the front sliding seat 42 is connected to the transmission chain of the first feed cylinder 40 .

[0077] The first feeding cylinder 40 is disposed on the front sliding base 41 , and the first feeding cylinder 40 drives the front sliding base 42 to move horizontally relative to the front sliding base 41 .

[0078] The second rotary cylinder 43 is horizontally disposed on the front sliding seat 42 , and the rotary shaft end of the second rotary cylinder 43 can rotate within a range of 180° around its horizontal axis.

[0079] The anchor drill 44 is arranged at the rotating shaft end of the second rotating oil cylinder 43. Driven by the rotating shaft end of the second rotating oil cylinder 43, the anchor drill 44 can rotate within a range of 180° around its horizontal axis.

[0080] The anchor drilling device 3 is arranged on the left and right sides of the tunneling device 1, and is used for anchor rod and cable support of the roof and side walls of the coal mine tunnel.

[0081] like Figure 6 As shown, the temporary support device 4 includes a bottom plate 46, two left and right turning cylinders 47, two left and right extension cylinders 48, a first support shaft 49, two left and right support cylinders 50, a front telescopic beam 51, a turning beam 52, a top beam 53 and a second support shaft 54. The front telescopic beam 51, the turning beam 52 and the top beam 53 cooperate to form a support assembly, and the front telescopic beam 51 and the top beam 53 cooperate to form a support body.

[0082] The bottom plate 46 is fixedly arranged on the upper part of the cutting part 5; and the front end of the bottom plate 46 is tilted downward, such a design helps the temporary support device 4 to better fit the contour of the tunnel when extended, thereby improving the support effect and operation safety.

[0083] The first support shaft 49 and the second support shaft 54 ​​are disposed on a fixing seat of the bottom plate 46 .

[0084] The cylinder ends of the two tilting cylinders 47 are respectively arranged at the two shaft ends of the second supporting shaft 54 ​​, and the piston rod end of the tilting cylinder 47 is arranged on the supporting seat of the cylinder of the extending cylinder 48 .

[0085] The piston rod end of the supporting oil cylinder 50 is arranged on the hinged seat of the top beam 53 , and the cylinder barrel end of the tilting oil cylinder 47 is arranged on the ear seat of the cylinder barrel of the extending oil cylinder 48 .

[0086] The piston rod end of the extension cylinder 48 is arranged on the hinge seat of the top beam 53, and the cylinder end of the extension cylinder 48 is arranged at the two shaft ends of the first support shaft 49. In this way, the extension cylinder 48 can be extended and retracted while rotating, which increases the lifting stroke of the support body on the one hand, and can also be used to drive the flip beam 52 to flip, saving costs on the other hand.

[0087] The flip beam 52 is hingedly disposed on the left and right sides of the top beam 53 , and the flip beam 52 can be flipped and unfolded to a horizontal position relative to the top beam 53 .

[0088] The front telescopic beam 51 is telescopically moved forward and backward relative to the top beam 53 through the built-in front telescopic oil cylinder. By arranging the top beam 53 and the front telescopic beam 51 in the support body, and allowing the front telescopic beam 51 to telescopically move forward and backward relative to the top beam 53 through the built-in front telescopic oil cylinder, this design enhances the adaptability and flexibility of the temporary support device 4. The telescopic function of the front telescopic beam 51 enables the support device to be adjusted according to the actual tunnel width and support requirements, thereby providing more accurate and effective support. This design not only improves the support efficiency, but also allows the support range to be quickly adjusted under different tunnel conditions to ensure operational safety, while also reducing the equipment adjustment time caused by changes in tunnel size and improving operational efficiency.

[0089] The temporary support device 4 is arranged on the upper part of the cutting part 5 of the tunneling device 1. The temporary support device 4 has a folded state and an extended state. When the tunneling machine is in the tunneling state, the temporary support device 4 is in the folded state. When the tunneling machine is in the supporting state, the temporary support device 4 is in the extended state, extending above the working platform range of the anchor drilling device 3, ensuring that personnel working on the standing platform 45 have a certain safety space.

[0090] 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 cantilever type tunnel boring machine for digging, supporting and anchoring in a coal mine, characterized in that: The tunnel boring machine includes a tunnel boring device and an anchor drilling device and a temporary support device arranged on the tunnel boring device; the temporary support device has a folded state and an extended state; when the temporary support device is in the folded state, the width of the temporary support device is smaller than the width of the tunnel boring device, and the height of the temporary support device is smaller than the height of the anchor drilling device, and the temporary support device is located behind the anchor drilling device; when the temporary support device is in the extended state, the width of the temporary support device is larger than the width of the tunnel boring device, and the temporary support device is at least partially located above the anchor drilling device.

2. The underground coal mine digging support anchor cantilever roadheader according to claim 1, characterized in that: During the process of the temporary supporting device switching from the folded state to the extended state, the temporary supporting device moves toward the anchor drilling rig of the anchor drilling device and can extend above the working platform of the anchor drilling device.

3. A coal mine underground digging support anchor cantilever roadheader according to any one of claims 1-2, characterized in that: The temporary support device includes a base plate, a support assembly and an extension cylinder; the base plate is fixedly mounted on the excavation device, one end of the extension cylinder is rotatably connected to the front end of the base plate, and the other end of the extension cylinder is connected to the rear end of the support assembly; when the extension cylinder rotates in a direction away from the base plate, the temporary support device switches from the folded state to the extended state.

4. The underground coal mine digging support anchor cantilever roadheader according to claim 3, characterized in that: The temporary support device also includes a tilting cylinder, one end of which is hinged to the bottom plate, and the other end of which is hinged to the cylinder end of the extension cylinder. The tilting cylinder is used to drive the extension cylinder to rotate.

5. The underground coal mine digging support anchor cantilever roadheader according to claim 4, characterized in that: The temporary support device also includes a supporting cylinder; one end of the supporting cylinder is hinged to the base plate, the other end of the supporting cylinder is hinged to the supporting assembly, and the hinge point of the supporting cylinder on the supporting assembly is located in front of the hinge point of the extension cylinder on the supporting assembly.

6. The underground coal mine digging support anchor cantilever roadheader according to claim 5, characterized in that: The support assembly includes a support body and a flip beam located at one side of the support body; the flip beam is rotatably connected to the support body.

7. The underground coal mine digging support anchor cantilever roadheader according to claim 6, characterized in that: The other end of the extension cylinder is hinged to the turnover beam.

8. The underground coal mine digging support anchor cantilever roadheader according to claim 3, characterized in that: The front end of the bottom plate is inclined downward.

9. The underground coal mine digging support anchor cantilever roadheader according to claim 6, characterized in that: The supporting body can be extended and retracted in the front-rear direction.

10. The underground coal mine digging support anchor cantilever roadheader according to claim 9, characterized in that: The supporting body comprises a top beam and a front telescopic beam; the front telescopic beam can be telescopically moved forward and backward relative to the top beam through a built-in front telescopic oil cylinder.

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