A mine-mounted full-section temporary support device for a fully-mechanized tunneling machine

Abstract

The present invention relates to an airborne full-section temporary support device for a mining excavator, which belongs to the technical field of temporary support tools; it comprises a horizontally arranged crossbeam, which is fixedly arranged on the mining excavator, and two symmetrical vertical mounting seats are fixedly arranged at both ends of the crossbeam, each mounting seat is respectively provided with a group of longitudinal unwinding mechanisms, and a group of transverse unwinding mechanisms is provided between the upper ends of the two mounting seats, and a unwinding drum is rotatably provided inside the longitudinal unwinding mechanism and the transverse unwinding mechanism, and a diamond metal mesh is wound around the outside of the unwinding drum, and the diamond metal mesh is unwound by the unwinding drum; a retractable support frame is provided in front of the crossbeam, and an angle adjustment mechanism is provided between the support frame and the crossbeam, and the angle of the support frame is adjusted by the angle adjustment mechanism; the problem that the current airborne support device for the mining excavator cannot be adjusted in size according to the size of the mine is solved.

Description

Technical Field

[0001] The present invention belongs to the technical field of temporary supporting tools, and in particular relates to an onboard full-section temporary supporting device for a mining tunneling machine. Background Art

[0002] Coal mine safety has always been the core task for the survival and development of coal mining enterprises. Its importance is self-evident and can be called the top priority. In recent years, in order to effectively protect the lives of miners and the rational development of resources, the state has continued to increase its supervision of coal mine safety and has introduced a series of strict and detailed laws and policies. Under this situation, coal mining enterprises have a deep understanding that safety is the prerequisite for efficiency. Especially in the key link of the excavation working face, the requirements for safe support are constantly rising. Not only does the support equipment need to have higher reliability and stability, but it also needs to meet new standards in the timeliness and effectiveness of support to cope with complex and changeable geological conditions, prevent the occurrence of safety accidents, and ensure the smooth progress of production operations.

[0003] The existing machine-mounted support devices for mining tunnel boring machines generally install a support device at the front end of the tunnel boring machine, and use the support device to support and protect the front wall. However, the existing support device is difficult to flexibly adjust the protection range according to the size of the mine. In mines of different sizes, the width and height of the support device cannot be easily adjusted, resulting in an inability to fully protect large-sized mines and a waste of resources for small-sized mines. It cannot meet the diverse needs of mine support and limits its application scenarios. In addition, the existing support device is difficult to maintain a stable protection effect when facing different working conditions. During the operation of the tunnel boring machine, protection loopholes may occur due to the device's inability to adapt to changes in the mine or movement of the equipment in a timely manner. Accidents such as roof collapse and side wall collapse cannot be effectively prevented, and the safety of operators and equipment cannot be guaranteed. Therefore, improvements and treatments are needed based on the above-mentioned problems. Summary of the Invention

[0004] The present invention overcomes the shortcomings of the prior art and proposes an onboard full-section temporary support device for a mining excavator; it solves the problem that the current onboard support device for a mining excavator cannot be adjusted in size according to the size of the mine.

[0005] In order to achieve the above object, the present invention is implemented through the following technical solutions.

[0006] A full-section temporary support device mounted on a mining tunnel boring machine comprises a horizontally arranged crossbeam, which is fixedly arranged on the tunnel boring machine. Two symmetrical vertical mounting seats are fixedly arranged at both ends of the crossbeam, each mounting seat is respectively provided with a set of longitudinal unwinding mechanisms, and a set of transverse unwinding mechanisms is provided between the upper ends of the two mounting seats. A unwinding drum is rotatably provided inside the longitudinal unwinding mechanism and the transverse unwinding mechanism, and a diamond metal mesh is wound around the outside of the unwinding drum, and the diamond metal mesh is unwound by the unwinding drum; a retractable support frame is provided in front of the crossbeam, and an angle adjustment mechanism is provided between the support frame and the crossbeam, and the angle of the support frame is adjusted by the angle adjustment mechanism.

[0007] Furthermore, the left and right ends of the crossbeam are respectively fixedly connected to the middle parts of the two mounting seats; a fixing plate is fixedly provided at the lower end of the mounting seat, and the longitudinal unwinding mechanism is provided on the fixing plate; the longitudinal unwinding mechanism includes a longitudinal unwinding rod, a third electric push rod, a push block, and a wedge block; the longitudinal unwinding rod remains vertical, and the unwinding drum is rotatably sleeved on the outer side of the longitudinal unwinding rod; a mounting groove is provided on the upper end face of the longitudinal unwinding rod, and a circle of positioning grooves is provided on the side wall of the mounting groove; a wedge block is slidingly provided inside each positioning groove, and the end of the wedge block located on the inner side of the positioning groove is a contact inclined surface, and a third electric push rod is fixedly provided at the inner upper end of the mounting groove, and a push block is fixedly provided at one end of the piston rod of the third electric push rod, and the contact inclined surface at one end of the inner side of the wedge block is in sliding contact with the conical surface on the outer side of the push block.

[0008] Furthermore, the horizontal unwinding mechanism includes a horizontal unwinding rod, a mounting plate, an adjusting plate, a guide rod, a spring, a positioning plate, and an adjusting screw; a positioning plate is fixedly provided at the upper end of the mounting seat, and a plurality of vertical adjusting screws are screwed on the positioning plate, and an adjusting plate is provided above the positioning plate, and the upper ends of the plurality of adjusting screws are rotatably connected to the lower end of the adjusting plate; a mounting plate is provided above the adjusting plate, and a plurality of vertical guide rods are fixedly provided at the lower end of the mounting plate, and the plurality of guide rods are slidably inserted into the inside of the adjusting plate; a spring is sleeved on the outside of each guide rod, and the upper and lower ends of the spring are respectively fixedly connected to the lower end surface of the mounting plate and the upper end surface of the adjusting plate; a left and right horizontal horizontal unwinding rod is fixedly provided between the two mounting plates, and the unwinding drum is rotatably sleeved on the outside of the horizontal unwinding rod.

[0009] Furthermore, the support frame includes a first C-shaped rod, a first connecting rod, a second C-shaped rod, a second connecting rod, a first motor, and a first screw rod; the first C-shaped rod and the first connecting rod are both horizontally arranged along the left and right directions, one end of the first connecting rod is slidably inserted into the inside of the first C-shaped rod, and the first C-shaped rod and the first connecting rod are fixedly connected by bolts; a vertical second C-shaped rod is fixedly provided on the lower end surface of the end of the first C-shaped rod and the first connecting rod away from each other, a second connecting rod is slidably inserted into the lower end opening of the second C-shaped rod, a first motor is fixedly provided at the internal top end of each first C-shaped rod, a vertical first screw rod is fixedly provided on the output shaft of the first motor, and the lower end of the first screw rod is screwed into the inside of the second connecting rod.

[0010] Furthermore, the support frame also includes a third C-rod, a third connecting rod, a fourth C-rod, and a fourth connecting rod; a third C-rod and a third connecting rod are fixedly arranged at the lower ends of the two second connecting rods, and the ends of the third C-rod and the third connecting rod that are close to each other are slidably inserted into each other; the third C-rod and the third connecting rod are fixedly connected by bolts; a group of fourth C-rod and fourth connecting rod are arranged between the two second C-rods, and a group of fourth C-rod and fourth connecting rod are arranged between the two second connecting rods, and the two groups are distributed up and down; the ends of the fourth C-rod and the fourth connecting rod located on the upper side that are away from each other are respectively fixedly connected to the middle height of the two second C-rods, and the ends of the fourth C-rod and the fourth connecting rod located on the lower side that are away from each other are respectively fixedly connected to the middle height of the two second connecting rods; the ends of the fourth C-rod and the fourth connecting rod in the same group that are close to each other are slidably inserted into each other; the fourth C-rod and the fourth connecting rod are fixedly connected by bolts.

[0011] Furthermore, the support frame also includes angle iron, positioning rod, connecting pipe, extension rod, second motor, and second screw rod; an angle iron is fixedly provided at the upper end of the first C-shaped rod, and a positioning rod is fixedly provided at the upper end of the first connecting rod, and the ends of the angle iron and the positioning rod that are close to each other are slidably inserted into each other, and the angle iron and the positioning rod are fixedly connected by bolts; a front and rear horizontal connecting pipe is fixedly provided at the end that is away from each other of the angle iron and the positioning rod, and an extension rod is slidably inserted into the rear end openings of the two connecting pipes, and a second motor is fixedly provided at the front end of the inner part of the two connecting pipes, and a second screw rod is fixedly provided on the output shaft of the second motor, and the rear end of the second screw rod is screwed to the extension rod; a group of angle iron and positioning rods are also provided between the ends of the two extension rods away from the connecting pipe.

[0012] Furthermore, the support frame also includes a fifth C-shaped rod, a fifth connecting rod, a third motor, and a third screw rod; a vertical fifth C-shaped rod is fixedly provided on the lower end surface of the two extension rods away from the connecting pipe, and a fifth connecting rod is slidably inserted into the lower end openings of the two fifth C-shaped rods, and a third motor is fixedly provided on the inner top of the two fifth C-shaped rods, and a third screw rod is fixedly provided on the output shaft of the third motor, and the lower end of the third screw rod is screwed to the upper end of the fifth connecting rod.

[0013] Furthermore, a front diamond metal mesh is set between the first C-shaped rod, the first connecting rod, the second C-shaped rod, the second connecting rod, the third C-shaped rod, the third connecting rod, the fourth C-shaped rod, and the fourth connecting rod; an upper diamond metal mesh is set between the front and rear two groups of positioning rods and angle irons, and the left and right two groups of connecting tubes and extension rods; and diamond metal meshes are set on the left and right sides between the second C-shaped rod, the second connecting rod, the connecting tube, the extension rod, the fifth C-shaped rod, and the fifth connecting rod.

[0014] Furthermore, the angle adjustment mechanism includes a first electric push rod, a connecting rod, a second electric push rod, a connecting seat, and a connecting shaft; two left-right symmetrical first electric push rods are rotatably arranged on the upper end surface of the beam, and a left-right horizontal connecting shaft is also fixedly arranged on the tunnel boring machine, and the connecting shaft is located on the front side of the beam; a connecting rod is rotatably arranged at the left and right ends of the connecting shaft, and the lower end of the connecting rod is rotatably connected to the connecting shaft; one end of the piston rod of the two first electric push rods is respectively hinged to the rear end surfaces of the two connecting rods, and a connecting seat is rotatably arranged at the upper ends of the two connecting rods, and the upper end of the connecting rod is hinged to the upper end of the connecting seat, and the two connecting seats are respectively fixedly connected to the rear end surfaces of the first C-shaped rod and the first connecting rod; a second electric push rod is rotatably arranged at the front end surfaces of the two connecting rods, and one end of the piston rod of the two second electric push rods is respectively hinged to the lower ends of the two connecting seats.

[0015] Furthermore, a first rotating seat is rotatably provided on the rear end faces of the two connecting rods, a second rotating seat is rotatably provided on the end faces of the two connecting rods away from each other, a third rotating seat is rotatably provided on the end faces of the two second C-shaped rods close to each other, and a fourth rotating seat is rotatably provided on the end faces of the two fifth C-shaped rods close to each other, a fifth electric push rod is provided between the first rotating seat and the fourth rotating seat on the same side, and a fourth electric push rod is provided between the second rotating seat and the third rotating seat on the same side.

[0016] The beneficial effects of the present invention compared to the prior art are:

[0017] The present invention facilitates adjustment of the width of the diamond metal mesh on the front and upper sides by means of the cooperation of the first C-shaped rod, the third C-shaped rod, the fourth C-shaped rod and the first connecting rod, the third connecting rod and the fourth connecting rod, so as to facilitate adjustment according to the size of the hole, thereby improving the diversity of the adjustment protection range and being applicable to mines of different sizes; facilitates adjustment of the height of the diamond metal mesh on the front and both sides by means of the cooperation of the first motor, the third motor and the first screw rod and the third screw rod, so as to adapt to comprehensive excavators of different sizes; facilitates control of the height of the diamond metal mesh on the upper and both sides by means of the cooperation of the second motor and the second screw rod The length of the diamond metal mesh is adjusted to avoid collision when the upper diamond metal mesh is turned to the vertical direction; the cooperation of the mounting seat and the mounting plate makes it easy to install the diamond metal mesh on the wall during the advancement of the comprehensive excavation machine, thereby improving the safety of the comprehensive excavation machine during movement; by adjusting the cooperation of the lead screw and the spring, it is easy to control the unwinding drum at the upper end to adaptively stick to the inner top surface of the mine, thereby improving the protective effect of the diamond metal mesh on the upper side; through the cooperation of the fourth electric push rod and the fifth electric push rod, it is easy to strengthen the supporting strength of the second C-rod and the fifth C-rod, thereby improving the support effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described in detail below with reference to the accompanying drawings:

[0019] Figure 1 It is a working schematic diagram of the present invention;

[0020] Figure 2 This is a three-dimensional schematic diagram of the present invention Figure 1 ;

[0021] Figure 3 This is a three-dimensional schematic diagram of the present invention Figure 2 ;

[0022] Figure 4 It is a structural diagram of the crossbeam, mounting seat, longitudinal unwinding mechanism, and transverse unwinding mechanism;

[0023] Figure 5 yes Figure 4 A partial enlarged schematic diagram of point A in the middle;

[0024] Figure 6 yes Figure 4 A partial enlarged schematic diagram of point B in the middle;

[0025] Figure 7 is a schematic diagram of the connection between the angle adjustment mechanism and the crossbeam;

[0026] Figure 8 This is a schematic diagram of the support frame structure Figure 1 ;

[0027] Figure 9 This is a schematic diagram of the support frame structure Figure 2 ;

[0028] Among them, 1 is a crossbeam, 2 is an articulated seat, 3 is a first electric push rod, 4 is a connecting rod, 5 is a second electric push rod, 6 is a connecting seat, 7 is a connecting shaft, 8 is a mounting seat, 9 is a longitudinal unwinding rod, 10 is a mounting plate, 11 is a transverse unwinding rod, 12 is a first C-shaped rod, 13 is a first connecting rod, 14 is a second C-shaped rod, 15 is a second connecting rod, 16 is a third C-shaped rod, 17 is a third connecting rod, 18 is a U-shaped plate, 19 is a fourth C-shaped rod, 20 is a fourth connecting rod, 21 is an anti-collision beam, 22 is Angle iron, 23 is the positioning rod, 24 is the connecting tube, 25 is the extension rod, 26 is the fifth C-shaped rod, 27 is the fifth connecting rod, 28 is the first motor, 29 is the first screw rod, 30 is the second motor, 31 is the second screw rod, 32 is the third motor, 33 is the third screw rod, 34 is the push block, 35 is the wedge block, 36 is the third electric push rod, 37 is the adjustment plate, 38 is the guide rod, 39 is the spring, 40 is the positioning plate, 41 is the adjusting screw, 42 is the fourth electric push rod, and 43 is the fifth electric push rod. DETAILED DESCRIPTION

[0029] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail with reference to the embodiments and the accompanying drawings. It should be understood that the specific embodiments described herein are merely for explaining the present invention and are not intended to limit the present invention. The technical solutions of the present invention will be described in detail below with reference to the embodiments and the accompanying drawings, but the scope of protection is not limited thereto.

[0030] like Figure 1 As shown in FIG9 , the present invention provides an airborne full-section temporary support device for a mining excavator, comprising a horizontally arranged crossbeam 1, which is fixedly arranged on the mining excavator, and two symmetrical vertical mounting seats 8 are fixedly arranged at both ends of the crossbeam 1, each mounting seat 8 is respectively provided with a group of longitudinal unwinding mechanisms, and a group of transverse unwinding mechanisms is provided between the upper ends of the two mounting seats 8, and a unwinding drum is rotatably provided inside the longitudinal unwinding mechanism and the transverse unwinding mechanism, and a diamond metal mesh is wound around the outside of the unwinding drum, and the diamond metal mesh is unwound by the unwinding drum; a retractable support frame is provided in front of the crossbeam 1, and an angle adjustment mechanism is provided between the support frame and the crossbeam 1, and the angle of the support frame is adjusted by the angle adjustment mechanism.

[0031] The crossbeam 1 is arranged horizontally along the left-right direction. The left and right ends of the crossbeam 1 are respectively fixedly connected to the middle parts of two mounting seats 8. A horizontal fixing plate is fixedly arranged at the lower end of the mounting seat 8, and the longitudinal unwinding mechanism is arranged on the fixing plate.

[0032] The longitudinal unwinding mechanism includes a longitudinal unwinding rod 9 , a third electric push rod 36 , a push block 34 , and a wedge block 35 .

[0033] The longitudinal unwinding rod 9 remains vertical, and the lower end of the longitudinal unwinding rod 9 is fixedly connected to the upper end surface of the fixed plate. The unwinding drum is rotatably sleeved on the outer side of the longitudinal unwinding rod 9. A vertical mounting groove is provided on the upper end surface of the longitudinal unwinding rod 9, and a circle of positioning grooves arranged in a circular array is provided on the side wall of the mounting groove. A wedge block 35 is slidingly provided inside each positioning groove, and the wedge block 35 slides along the radial direction of the longitudinal unwinding rod 9. The end of the wedge block 35 located on the inner side of the positioning groove is a contact inclined surface, the upper end of the contact inclined surface is close to the axis of the longitudinal unwinding rod 9, and the lower end of the contact inclined surface is away from the axis of the longitudinal unwinding rod 9. A third electric push rod 36 is fixedly provided at the upper end of the inner part of the mounting groove, and the piston rod of the third electric push rod 36 is vertically downward. A push block 34 is fixedly provided at one end of the piston rod of the third electric push rod 36, and the push block 34 is a truncated cone structure with a thin top and a thick bottom. The contact inclined surface at one inner end of the wedge block 35 is in sliding contact with the conical surface at the outer side of the push block 34 .

[0034] The transverse unwinding mechanism includes a transverse unwinding rod 11 , a mounting plate 10 , an adjustment plate 37 , a guide rod 38 , a spring 39 , a positioning plate 40 , and an adjustment screw 41 .

[0035] A horizontal positioning plate 40 is fixedly mounted on the upper end of the mounting base 8. Multiple vertical adjustment screws 41 are threaded onto the positioning plate 40. These adjustment screws 41 are arranged in a front-to-back direction, and a knob is fixedly mounted at the lower end of each adjustment screw 41, which is used to control the rotation of the adjustment screw 41. A horizontal adjustment plate 37 is mounted above the positioning plate 40. The upper ends of the adjustment screws 41 are rotatably connected to the lower end of the adjustment plate 37. A mounting plate 10 is mounted above the adjustment plate 37 and is located within a vertical plane in the front-to-back direction. Multiple vertical guide rods 38 are fixedly mounted on the lower end of the mounting plate 10. These guide rods 38 are arranged in a front-to-back direction and are slidably inserted into the interior of the adjustment plate 37. A spring 39 is sleeved on the outside of each guide rod 38. The upper and lower ends of the spring 39 are fixedly connected to the lower end surface of the mounting plate 10 and the upper end surface of the adjustment plate 37, respectively. A horizontal transverse unwinding rod 11 is fixedly provided between the two mounting plates 10 , and the unwinding drum is rotatably sleeved on the outer side of the transverse unwinding rod 11 .

[0036] The support frame includes a first C-shaped rod 12, a first connecting rod 13, a second C-shaped rod 14, a second connecting rod 15, a third C-shaped rod 16, a third connecting rod 17, a fourth C-shaped rod 19, a fourth connecting rod 20, an angle iron 22, a positioning rod 23, a connecting pipe 24, an extension rod 25, a fifth C-shaped rod 26, a fifth connecting rod 27, a first motor 28, a first screw rod 29, a second motor 30, a second screw rod 31, a third motor 32, and a third screw rod 33.

[0037] The first C-shaped rod 12 and the first connecting rod 13 are both arranged horizontally in the left-right direction. One end of the first connecting rod 13 is slidably inserted into the first C-shaped rod 12. The first C-shaped rod 12 and the first connecting rod 13 are fixedly connected by bolts. When the bolts are removed, the total length of the first C-shaped rod 12 and the first connecting rod 13 can be adjusted; when the bolts are fixed, the total length of the first C-shaped rod 12 and the first connecting rod 13 is fixed.

[0038] A second C-shaped rod 14 is fixedly provided on the lower end surface of the first C-shaped rod 12 and the first connecting rod 13 at one end away from each other. A second connecting rod 15 is slidably inserted into the lower end opening of the second C-shaped rod 14. The second connecting rod 15 is a vertically arranged square rod-shaped structure. A first motor 28 is fixedly provided at the top end of each first C-shaped rod 12. The output shaft of the first motor 28 is vertically downward. A vertical first screw rod 29 is fixedly provided on the output shaft of the first motor 28. The lower end of the first screw rod 29 is screwed into the inside of the second connecting rod 15. When the first motor 28 drives the first screw rod 29 to rotate, since the first screw rod 29 is screwed into the second connecting rod 15, the second connecting rod 15 is driven to rise and fall, thereby adjusting the total length of the second C-shaped rod 14 and the second screw rod 31.

[0039] A third C-shaped rod 16 and a third connecting rod 17 are fixedly mounted at the lower ends of the two second connecting rods 15, respectively. Both the third C-shaped rod 16 and the third connecting rod 17 are arranged horizontally in the left-right direction and extend toward each other. The third C-shaped rod 16 is located below the first C-shaped rod 12, and the third connecting rod 17 is located below the first connecting rod 13. The ends of the third C-shaped rod 16 and the third connecting rod 17 that are farther away from each other are fixedly connected to the lower ends of the two second connecting rods 15, respectively. The ends of the third C-shaped rod 16 and the third connecting rod 17 that are closer to each other are slidably connected to each other. The third C-shaped rod 16 and the third connecting rod 17 are fixedly connected by bolts. When the bolts are removed, the total length of the third C-shaped rod 16 and the third connecting rod 17 can be adjusted; when secured with the bolts, the total length of the third C-shaped rod 16 and the third connecting rod 17 is fixed. The total length of the third C-shaped rod 16 and the third connecting rod 17 is adjusted according to the total length of the first C-shaped rod 12 and the first connecting rod 13 .

[0040] A fourth C-shaped rod 19 and a fourth connecting rod 20 are positioned between the two second C-shaped rods 14, and another fourth C-shaped rod 19 and a fourth connecting rod 20 are positioned between the two second connecting rods 15. The two groups are arranged vertically. Each of the fourth C-shaped rod 19 and the fourth connecting rod 20 is horizontally arranged in a left-right direction, extending toward each other. The fourth C-shaped rod 19 is positioned below the first C-shaped rod 12, and the fourth connecting rod 20 is positioned below the first connecting rod 13. The distal ends of the fourth C-shaped rod 19 and the fourth connecting rod 20 on the upper side are fixedly connected to the mid-height of the two second C-shaped rods 14 via a U-shaped plate 18. The distal ends of the fourth C-shaped rod 19 and the fourth connecting rod 20 on the lower side are fixedly connected to the mid-height of the two second connecting rods 15 via a U-shaped plate 18. The proximal ends of the fourth C-shaped rod 19 and the fourth connecting rod 20 in the same group are slidably interlocked. A front and rear horizontal impact beam 21 is fixed to the rear end of each U-shaped plate 18. The fourth C-shaped bar 19 and the fourth connecting rod 20 are securely connected by bolts. When the bolts are removed, the combined length of the fourth C-shaped bar 19 and the fourth connecting rod 20 can be adjusted. When secured with bolts, the combined length of the fourth C-shaped bar 19 and the fourth connecting rod 20 is fixed. The combined length of the fourth C-shaped bar 19 and the fourth connecting rod 20 is adjusted based on the combined length of the first C-shaped bar 12 and the first connecting rod 13.

[0041] An angle iron 22 is fixedly mounted on the upper end of the first C-shaped rod 12. The angle iron 22 is parallel to the first C-shaped rod 12 and is bolted to the first C-shaped rod 12. A positioning rod 23 is fixedly mounted on the upper end of the first connecting rod 13. The positioning rod 23 is parallel to the first connecting rod 13 and is bolted to the first connecting rod 13. The angle iron 22 and the positioning rod 23 are slidably engaged with each other at their adjacent ends. The angle iron 22 and the positioning rod 23 are bolted to each other. When the bolts are removed, the combined length of the angle iron 22 and the positioning rod 23 can be adjusted. Once secured with the bolts, the combined length of the angle iron 22 and the positioning rod 23 is fixed.

[0042] A connecting tube 24 is fixedly provided at one end of the angle iron 22 and the positioning rod 23, and the connecting tube 24 is arranged horizontally along the front-to-back direction. The front ends of the two connecting tubes 24 are fixedly connected to the angle iron 22 and the positioning rod 23, respectively. The connecting tube 24 is a square tubular structure, and an extension rod 25 is slidably inserted into the rear end opening of the two connecting tubes 24. The extension rod 25 is a square rod-shaped structure. A second motor 30 is fixedly provided at the front end of the two connecting tubes 24, and the output shaft of the second motor 30 faces the rear side. A second screw rod 31 horizontally arranged in the front and back direction is fixedly provided on the output shaft of the second motor 30, and the rear end of the second screw rod 31 is screwed to the extension rod 25. When the second motor 30 drives the second screw rod 31 to rotate, since the second screw rod 31 is screwed to the extension rod 25, it drives the extension rod 25 to slide inside the connecting tube 24, thereby adjusting the total length of the connecting tube 24 and the extension rod 25.

[0043] A group of angle irons 22 and positioning rods 23 are also provided between the ends of the two extension rods 25 away from the connecting pipe 24. The group of angle irons 22 and positioning rods 23 on the rear side are symmetrical with the group of angle irons 22 and positioning rods 23 on the front side. The positioning rods 23 are slidably inserted between the angle irons 22, and the positioning rods 23 and the angle irons 22 are fixedly connected by bolts.

[0044] A fifth C-shaped rod 26 is fixedly mounted on the lower end surface of each extension rod 25 away from the connecting tube 24. A fifth connecting rod 27 is slidably inserted into the lower end openings of each fifth C-shaped rod 26. The fifth connecting rod 27 is a vertically arranged square rod-shaped structure. A third motor 32 is fixedly mounted on the top end of each fifth C-shaped rod 26. The output shaft of the third motor 32 is vertically downward. A vertical third screw rod 33 is fixedly mounted on the output shaft of the third motor 32. The lower end of the third screw rod 33 is screwed to the upper end of the fifth connecting rod 27. When the third motor 32 drives the third screw rod 33 to rotate, the third screw rod 33 is screwed to the fifth connecting rod 27, thereby driving the fifth connecting rod 27 to slide inside the fifth C-shaped rod 26, thereby adjusting the total length of the fifth C-shaped rod 26 and the fifth connecting rod 27.

[0045] A diamond metal mesh on the front side is arranged between the first C-shaped rod 12, the first connecting rod 13, the second C-shaped rod 14, the second connecting rod 15, the third C-shaped rod 16, the third connecting rod 17, the fourth C-shaped rod 19, and the fourth connecting rod 20; an upper diamond metal mesh is arranged between the front and rear groups of positioning rods 23 and angle irons 22, and the left and right groups of connecting pipes 24 and extension rods 25; diamond metal meshes on the left and right sides are arranged between the second C-shaped rod 14, the second connecting rod 15, the connecting pipe 24, the extension rod 25, the fifth C-shaped rod 26, and the fifth connecting rod 27 on the left and right sides, and the diamond metal meshes on the left and right sides are supported by the anti-collision beams 21 on the left and right sides.

[0046] When the total length of the first C-shaped rod 12 and the first connecting rod 13, the total length of the third C-shaped rod 16 and the third connecting rod 17, and the total length of the fourth C-shaped rod 19 and the fourth connecting rod 20 are synchronously adjusted, the left and right widths of the diamond metal mesh on the front side can be adjusted; when the total length of the second C-shaped rod 14 and the second connecting rod 15 on the left and right sides are adjusted, the height of the diamond metal mesh on the front side can be adjusted.

[0047] When the total length of the front and rear two groups of angle irons 22 and the positioning rod 23 is adjusted, the left and right widths of the upper diamond metal mesh can be adjusted; when the total length of the left and right two groups of connecting pipes 24 and the extension rod 25 is adjusted, the front and rear lengths of the upper diamond metal mesh can be adjusted.

[0048] When the total length of the left and right sets of connecting tubes 24 and the extension rod 25 is adjusted, the front and rear lengths of the diamond metal meshes on the left and right sides can be adjusted; when the total length of the second C-shaped rod 14 and the second connecting rod 15 on the left and right sides, and the total length of the fifth C-shaped rod 26 and the fifth connecting rod 27 on the left and right sides are adjusted, the heights of the diamond metal meshes on the left and right sides can be adjusted.

[0049] The angle adjustment mechanism includes a first electric push rod 3 , a connecting rod 4 , a second electric push rod 5 , a connecting seat 6 , and a connecting shaft 7 .

[0050] Two left-right symmetrical hinged seats 2 are fixedly provided on the upper end face of the crossbeam 1. A first electric push rod 3 is rotatably provided on each hinged seat 2, and the hinge axis of the first electric push rod 3 is horizontally provided along the left-right direction. A left-right horizontal connecting shaft 7 is also fixedly provided on the tunnel boring machine, and the connecting shaft 7 is located on the front side of the crossbeam 1. A connecting rod 4 is rotatably provided at the left and right ends of the connecting shaft 7, respectively. The two connecting rods 4 are symmetrically provided on the left and right, and the lower ends of the connecting rods 4 are rotatably connected to the connecting shaft 7. One end of the piston rod of the two first electric push rods 3 is hinged to the rear end faces of the two connecting rods 4, respectively, and the two connecting rods 4 are driven to rotate by the extension and retraction of the two first electric push rods 3. A connecting seat 6 is rotatably provided at the upper ends of the two connecting rods 4, respectively, and the upper end of the connecting rod 4 is hinged to the upper end of the connecting seat 6. The two connecting seats 6 are fixedly connected to the rear end faces of the first C-shaped rod 12 and the first connecting rod 13, respectively. A second electric push rod 5 is rotatably provided on the front end surface of the two connecting rods 4. One end of the piston rod of the two second electric push rods 5 is hinged to the lower end of the two connecting seats 6 respectively. The connection seat 6 is controlled to rotate relative to the connecting rod 4 by controlling the extension and contraction of the second electric push rod 5.

[0051] A first rotating seat is rotatably mounted on the rear end faces of the two connecting rods 4, with the rotation axis of the first rotating seat being perpendicular to the rear end faces of the connecting rods 4. A second rotating seat is rotatably mounted on the end faces of the two connecting rods 4 that are separated from each other, with the rotation axis of the second rotating seat being perpendicular to the end faces of the two connecting rods 4 that are separated from each other. A third rotating seat is rotatably mounted on the end faces of the two second C-shaped rods 14 that are adjacent to each other, with the rotation axis of the third rotating seat being perpendicular to the end faces of the two second C-shaped rods 14 that are adjacent to each other. A fourth rotating seat is rotatably mounted on the end faces of the two fifth C-shaped rods 26 that are adjacent to each other, with the rotation axis of the fourth rotating seat being perpendicular to the end faces of the two fifth C-shaped rods 26 that are adjacent to each other.

[0052] A fifth electric push rod 43 is provided between the first and fourth rotating seats on the same side, with its two ends hinged to the first and fourth rotating seats, respectively. A fourth electric push rod 42 is provided between the second and third rotating seats on the same side, with its two ends hinged to the second and third rotating seats, respectively.

[0053] The working principle of the present invention is:

[0054] Step 1. First, install the first C-shaped rod 12, the first connecting rod 13, the second C-shaped rod 14, the second connecting rod 15, the third C-shaped rod 16, and the third connecting rod 17 according to the size of the hole, fix the first C-shaped rod 12 and the first connecting rod 13 with bolts, and fix the third C-shaped rod 16 and the third connecting rod 17 with bolts, so that the total length of the first C-shaped rod 12 and the first connecting rod 13 and the total length of the third C-shaped rod 16 and the third connecting rod 17 are adapted to the width of the hole; install the first motor 28 inside the second C-shaped rod 14, install the first screw rod 29 on the first motor 28, and connect the first screw rod 29 to the second connecting rod 15. The first C-shaped rod 12, the first connecting rod 13, the second C-shaped rod 14, the second connecting rod 15, the third C-shaped rod 16, and the third connecting rod 17 are then assembled into a front square frame. Two upper and lower sets of fourth C-shaped rods 19 and fourth connecting rods 20 are then installed within the front square frame. The fourth C-shaped rods 19 and fourth connecting rods 20 are then secured with bolts. The front diamond-shaped metal mesh is then installed within the front square frame.

[0055] Step 2: After the diamond-shaped metal mesh on the front side is installed, the angle iron 22 and the positioning rod 23 on the front side are installed on the first C-shaped rod 12 and the upper end of the first connecting rod 13. The angle iron 22 and the positioning rod 23 on the front side are fixedly connected by bolts. Then, a connecting pipe 24 is installed at the end where the angle iron 22 and the positioning rod 23 are away from each other. A second motor 30 is installed inside the connecting pipe 24. A second screw rod 31 is installed on the second motor 30, and the second screw rod 31 is connected to the extension rod 25. Then, a group of angle irons 22 and the positioning rod 23 on the rear side are installed between the rear ends of the two extension rods 25. The angle iron 22 and the positioning rod 23 on the rear side are fixedly connected by bolts. Then, a fifth C-shaped rod 26 is installed at the rear end of the extension rod 25. A third motor 32 is installed inside the fifth C-shaped rod 26. A third screw rod 33 is installed on the third motor 32, and the third screw rod 33 is connected to the fifth connecting rod 27. A collision-proof beam 21 is installed on each of the four U-shaped plates 18. The upper diamond-shaped metal mesh is installed between the front and rear sets of positioning rods 23 and angle irons 22, and the left and right sets of connecting tubes 24 and extension rods 25. The left and right diamond-shaped metal mesh is installed between the second C-shaped rod 14, the second connecting rod 15, the connecting tube 24, the extension rod 25, the fifth C-shaped rod 26, and the fifth connecting rod 27 on the left and right sides.

[0056] Step three, after the diamond metal meshes on the front side, upper side, left and right sides are installed, connect the two connecting seats 6 to the first C-shaped rod 12 and the first connecting rod 13 respectively, and then connect the fifth electric push rod 43 to the first rotating seat and the fourth rotating seat on the same side, and connect the fourth electric push rod 42 to the second rotating seat and the third rotating seat on the same side.

[0057] Step 4: The three unwinding drums are sequentially connected to the outside of the two longitudinal unwinding rods 9 and a transverse unwinding rod 11, and the transverse unwinding rod 11 is fixedly connected to the mounting plates 10 on both sides. Before the unwinding drum is connected to the longitudinal unwinding rod 9, the third electric push rod 36 is in an extended state, and the push block 34 does not squeeze the wedge 35, and the wedge 35 is in a free state inside the positioning groove. After the unwinding drum is connected to the inside of the longitudinal unwinding rod 9, the inner wall of the unwinding drum squeezes the wedge 35, so that the wedge 35 enters the inside of the positioning groove, and the unwinding drum can rotate outside the longitudinal unwinding rod 9. When the unwinding drum outside the longitudinal unwinding rod 9 is not needed to rotate, the third electric push rod 36 is controlled to shrink, drive the push block 34 to rise, and the cone surface outside the push block 34 squeezes the contact inclined surface of the wedge 35, so that the wedge 35 is squeezed to slide outside the positioning groove, and the outer surface of the wedge 35 squeezes the unwinding drum, so that the unwinding drum can no longer rotate relative to the longitudinal unwinding rod 9. When the unwinding drum needs to be replaced, the electric push rod is controlled to extend again, causing the push block 34 to descend, and the wedge block 35 no longer squeezes the unwinding drum, so that the reel can be replaced smoothly. When the upper unwinding drum is sleeved on the outside of the transverse unwinding rod 11, and the transverse unwinding rod 11 is installed on the mounting plates 10 on both sides, the multiple adjustment screws 41 are rotated simultaneously according to the height in the hole, causing the adjustment plate 37 to rise and fall, and the adjustment plate 37 drives the mounting plate 10 to rise and fall, and the mounting plate 10 drives the transverse unwinding rod 11 to rise and fall, thereby adjusting the height of the upper transverse unwinding drum.

[0058] Step 5: As the tunnel boring machine advances, the first and second electric push rods 3 and 5 are activated. The first push rod 3 adjusts the connecting rod 4 to a vertical position, while the second push rod 5 adjusts the front diamond-shaped metal mesh to a horizontal position. During this process, the fourth and fifth electric push rods 42 and 43 simultaneously extend and retract. As the first and second electric push rods 3 and 5 operate, the second motor 30 is activated, which drives the second screw rod 31 to rotate. This in turn drives the extension rod 25 to slide toward the interior of the connecting tube 24, shortening the combined length of the connecting tube 24 and the extension rod 25. This shrinks the upper diamond-shaped metal mesh, ensuring that it does not collide during angle adjustment. As the tunnel boring machine advances, the diamond-shaped metal mesh wound on the unwinding drum is unwound by the longitudinal unwinding rod 9 and the transverse unwinding rod 11. The diamond-shaped metal mesh is then mounted on the wall within the tunnel using anchor rods. When the unwinding drum on the upper side is in the process of moving, since the top surface in the hole is not always kept horizontal, the spring 39 and the guide rod 38 are used to ensure that the unwinding drum on the upper side abuts against the top surface in the hole.

[0059] Step 6: After the tunnel boring machine stops cutting coal, the first electric push rod 3 and the second electric push rod 5 are started. The connecting rod 4 is adjusted to an inclined state by the first electric push rod 3, and the diamond metal mesh on the front side is readjusted to a vertical state by the second electric push rod 5. During this process, the fourth electric push rod 42 and the fifth electric push rod 43 are synchronously extended and retracted. The second C-shaped rod 14 is supported by the fourth electric push rod 42, and the fifth C-shaped rod 26 is supported by the fifth electric push rod 43. Then the first motor 28, the second motor 30 and the third motor 32 are started to extend the second connecting rod 15, the extension rod 25 and the fifth connecting rod 27, thereby expanding the diamond metal mesh on the front side, the upper side, and the left and right sides, thereby supporting the front end, the upper end, and the left and right walls.

[0060] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A full-section temporary support device mounted on a mining tunnel boring machine, characterized by: The invention comprises a horizontally arranged crossbeam (1), the crossbeam (1) being fixedly arranged on a comprehensive excavator, two symmetrical vertical mounting seats (8) being fixedly arranged at both ends of the crossbeam (1), a set of longitudinal unwinding mechanisms being respectively arranged on each mounting seat (8), a set of transverse unwinding mechanisms being arranged between the upper ends of the two mounting seats (8), a unwinding drum being rotatably arranged inside the longitudinal unwinding mechanism and the transverse unwinding mechanism, a diamond-shaped metal mesh being wound around the outside of the unwinding drum, and the diamond-shaped metal mesh being unwound by the unwinding drum; a retractable support frame being arranged in front of the crossbeam (1), an angle adjustment mechanism being arranged between the support frame and the crossbeam (1), and the angle of the support frame being adjusted by the angle adjustment mechanism; The left and right ends of the crossbeam (1) are fixedly connected to the middle parts of the two mounting seats (8) respectively; a fixed plate is fixedly provided at the lower end of the mounting seat (8), and the longitudinal unwinding mechanism is provided on the fixed plate; the longitudinal unwinding mechanism includes a longitudinal unwinding rod (9), a third electric push rod (36), a push block (34), and a wedge block (35); the longitudinal unwinding rod (9) is kept vertical, and the unwinding drum is rotatably sleeved on the outer side of the longitudinal unwinding rod (9); a mounting groove is provided on the upper end surface of the longitudinal unwinding rod (9), and a circle of positioning grooves is provided on the side wall of the mounting groove; a wedge block (35) is slidably provided in each positioning groove, and one end of the wedge block (35) located on the inner side of the positioning groove is a contact inclined surface, and a third electric push rod (36) is fixedly provided at the inner upper end of the mounting groove, and a push block (34) is fixedly provided at one end of the piston rod of the third electric push rod (36), and the contact inclined surface at one end of the inner side of the wedge block (35) is in sliding contact with the conical surface on the outer side of the push block (34).

2. The full-section temporary support device mounted on a mining tunnel boring machine according to claim 1, characterized in that: The transverse unwinding mechanism comprises a transverse unwinding rod (11), a mounting plate (10), an adjusting plate (37), a guide rod (38), a spring (39), a positioning plate (40), and an adjusting screw (41); a positioning plate (40) is fixedly provided at the upper end of the mounting seat (8), a plurality of vertical adjusting screws (41) are screwed onto the positioning plate (40), an adjusting plate (37) is provided above the positioning plate (40), and the upper ends of the plurality of adjusting screws (41) are rotatably connected to the lower end of the adjusting plate (37); a plurality of adjusting screws (41) are provided above the adjusting plate (37). A mounting plate (10) is provided with a plurality of vertical guide rods (38) fixedly provided at the lower end of the mounting plate (10), and the plurality of guide rods (38) are all slidably inserted into the interior of the adjustment plate (37); a spring (39) is sleeved on the outside of each guide rod (38), and the upper and lower ends of the spring (39) are respectively fixedly connected to the lower end surface of the mounting plate (10) and the upper end surface of the adjustment plate (37); a left and right horizontal transverse unwinding rod (11) is fixedly provided between the two mounting plates (10), and the unwinding drum is rotatably sleeved on the outside of the transverse unwinding rod (11).

3. The full-section temporary support device mounted on a mining tunnel boring machine according to claim 1, characterized in that: The support frame comprises a first C-shaped rod (12), a first connecting rod (13), a second C-shaped rod (14), a second connecting rod (15), a first motor (28), and a first screw rod (29); the first C-shaped rod (12) and the first connecting rod (13) are both arranged horizontally along the left-right direction, one end of the first connecting rod (13) is slidably inserted into the inside of the first C-shaped rod (12), and the first C-shaped rod (12) and the first connecting rod (13) are fixedly connected by bolts; the first C-shaped rod (12) A vertical second C-shaped rod (14) is fixedly provided on the lower end surface of one end away from each other of the first connecting rod (13), a second connecting rod (15) is slidably inserted into the lower end opening of the second C-shaped rod (14), a first motor (28) is fixedly provided on the top end of each first C-shaped rod (12), a vertical first screw rod (29) is fixedly provided on the output shaft of the first motor (28), and the lower end of the first screw rod (29) is screwed into the inside of the second connecting rod (15).

4. The full-section temporary support device mounted on a mining tunnel boring machine according to claim 3, characterized in that: The support frame further comprises a third C-shaped rod (16), a third connecting rod (17), a fourth C-shaped rod (19), and a fourth connecting rod (20); a third C-shaped rod (16) and a third connecting rod (17) are fixedly provided at the lower ends of the two second connecting rods (15), and the third C-shaped rod (16) and the third connecting rod (17) are slidably plugged into each other at their ends close to each other; the third C-shaped rod (16) and the third connecting rod (17) are fixedly connected by bolts; a group of fourth C-shaped rods (19) and fourth connecting rods (20) are provided between the two second C-shaped rods (14), and a group of fourth C-shaped rods (19) and fourth connecting rods (20) are provided between the two second connecting rods (15). The fourth C-shaped rod (19) and the fourth connecting rod (20) are arranged in two groups and distributed in an upper and lower manner; the ends of the fourth C-shaped rod (19) and the fourth connecting rod (20) located on the upper side that are away from each other are fixedly connected to the middle height of the two second C-shaped rods (14), and the ends of the fourth C-shaped rod (19) and the fourth connecting rod (20) located on the lower side that are away from each other are fixedly connected to the middle height of the two second connecting rods (15); the ends of the fourth C-shaped rod (19) and the fourth connecting rod (20) in the same group that are close to each other are slidably plugged into each other; the fourth C-shaped rod (19) and the fourth connecting rod (20) are fixedly connected by bolts.

5. The full-section temporary support device mounted on a mining tunnel boring machine according to claim 4, characterized in that: The support frame further comprises an angle iron (22), a positioning rod (23), a connecting pipe (24), an extension rod (25), a second motor (30), and a second screw rod (31); an angle iron (22) is fixedly provided at the upper end of the first C-shaped rod (12), a positioning rod (23) is fixedly provided at the upper end of the first connecting rod (13), the angle iron (22) and the positioning rod (23) are slidably plugged into each other at one end close to each other, and the angle iron (22) and the positioning rod (23) are fixedly connected by bolts; at one end away from the angle iron (22) and the positioning rod (23), the angle iron (22) and the positioning rod (23) are fixedly connected. A front and rear horizontal connecting pipe (24) is fixedly provided at each end, an extension rod (25) is slidably inserted into the rear end openings of the two connecting pipes (24), a second motor (30) is fixedly provided at the front end of each connecting pipe (24), a second screw rod (31) is fixedly provided on the output shaft of the second motor (30), and the rear end of the second screw rod (31) is screwed to the extension rod (25); a set of angle irons (22) and positioning rods (23) are also provided between the ends of the two extension rods (25) away from the connecting pipes (24).

6. The full-section temporary support device mounted on a mining tunnel boring machine according to claim 5, characterized in that: The support frame further comprises a fifth C-shaped rod (26), a fifth connecting rod (27), a third motor (32), and a third screw rod (33); a vertical fifth C-shaped rod (26) is fixedly provided on the lower end surface of the two extension rods (25) away from the connecting tube (24), a fifth connecting rod (27) is slidably inserted into the lower end openings of the two fifth C-shaped rods (26), a third motor (32) is fixedly provided on the top end of the two fifth C-shaped rods (26), a third screw rod (33) is fixedly provided on the output shaft of the third motor (32), and the lower end of the third screw rod (33) is screwed to the upper end of the fifth connecting rod (27).

7. The full-section temporary support device mounted on a mining tunnel boring machine according to claim 6, characterized in that: A front diamond metal mesh is provided between the first C-shaped rod (12), the first connecting rod (13), the second C-shaped rod (14), the second connecting rod (15), the third C-shaped rod (16), the third connecting rod (17), the fourth C-shaped rod (19), and the fourth connecting rod (20); an upper diamond metal mesh is provided between the front and rear two groups of positioning rods (23) and angle irons (22), and the left and right two groups of connecting tubes (24) and extension rods (25); and left and right diamond metal meshes are provided between the left and right second C-shaped rods (14), the second connecting rods (15), the connecting tubes (24), the extension rods (25), the fifth C-shaped rods (26), and the fifth connecting rods (27).

8. The full-section face temporary support device mounted on a mining tunnel boring machine according to claim 7, characterized in that: The angle adjustment mechanism comprises a first electric push rod (3), a connecting rod (4), a second electric push rod (5), a connecting seat (6), and a connecting shaft (7); two left-right symmetrical first electric push rods (3) are rotatably provided on the upper end surface of the crossbeam (1); a left-right horizontal connecting shaft (7) is fixedly provided on the tunnel boring machine, and the connecting shaft (7) is located on the front side of the crossbeam (1); a connecting rod (4) is rotatably provided at the left and right ends of the connecting shaft (7), and the lower end of the connecting rod (4) is rotatably connected to the connecting shaft (7); the two first electric push rods (3) are rotatably provided on the upper end surface of the crossbeam (1); ) are hinged to the rear end faces of the two connecting rods (4), and a connecting seat (6) is rotatably provided at the upper ends of the two connecting rods (4). The upper ends of the connecting rods (4) are hinged to the upper ends of the connecting seats (6), and the two connecting seats (6) are fixedly connected to the rear end faces of the first C-shaped rod (12) and the first connecting rod (13), respectively; a second electric push rod (5) is rotatably provided at the front end faces of the two connecting rods (4), and one end of the piston rod of the two second electric push rods (5) is hinged to the lower ends of the two connecting seats (6), respectively.

9. The full-section temporary support device mounted on a mining tunnel boring machine according to claim 8, characterized in that: A first rotating seat is rotatably provided on the rear end surfaces of the two connecting rods (4), a second rotating seat is rotatably provided on the end surfaces of the two connecting rods (4) away from each other, a third rotating seat is rotatably provided on the end surfaces of the two second C-shaped rods (14) approaching each other, a fourth rotating seat is rotatably provided on the end surfaces of the two fifth C-shaped rods (26) approaching each other, a fifth electric push rod (43) is provided between the first rotating seat and the fourth rotating seat on the same side, and a fourth electric push rod (42) is provided between the second rotating seat and the third rotating seat on the same side.

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