Roadway advance support device and roadway tunneling advance reinforcement method

Abstract

The invention relates to the technical field of roadway supporting, in particular to a roadway advance supporting device and a roadway tunneling advance reinforcing method.The roadway advance supporting device comprises two H-shaped frames, the H-shaped frames are symmetrically arranged, center plates are fixedly installed in the middles of the H-shaped frames, vertical grooves are formed in the sides, close to each other, of the two center plates, and lifting plates are slidably installed in the vertical grooves through electric sliding blocks; an electric sliding block is started to drive a sliding piece to conduct lifting operation in a lifting groove, and at the moment, a push-pull plate moves along with lifting of the sliding piece so that the push-pull plate can push and pull two second arc plates on the two sides; the two corresponding electric telescopic plates below the second arc plate slide on the two H-shaped frames correspondingly, so that the supporting requirements of the whole device in different ranges in a roadway are met, and an electric sliding block is started to enable a driving wheel to rotate to drive a toothed plate above to move; and when the toothed plate moves, the L-shaped plate transversely moves in the cross-shaped groove, so that the rectangular plate and the bearing plate move.

Description

Technical Field

[0001] The invention relates to the technical field of tunnel support, in particular to a tunnel advance support device and a tunnel excavation advance reinforcement method. Background Art

[0002] Coal mining in my country is mainly carried out underground, which requires the excavation of a large number of tunnels underground. The use of tunnel support to maintain the smooth flow of tunnels and the stability of surrounding rocks is of great significance to coal mine construction and production. The basic purpose of tunnel support is to ease and reduce the movement of surrounding rocks so that the cross-section of the tunnel does not shrink excessively, and at the same time prevent the scattered and damaged surrounding rocks from falling.

[0003] The prior art discloses a Chinese patent with application number CN202111421590.1, which is an advance support device for an ultra-long working face tunnel, and discloses a detachable connection structure between the components to realize a split support device, so that the components can be transported separately in the tunnel, so that the support device as a whole can be supported in a smaller tunnel.

[0004] The above device also performs advance support for the tunnel. However, when the device is moved after supporting the tunnel, it cannot move quickly and cannot be adaptively adjusted according to the required support range. At the same time, the support position cannot be moved when supporting the inner wall of the tunnel, so its use is greatly limited. Summary of the invention

[0005] The object of the present invention is to provide a tunnel advance support device and a tunnel excavation advance reinforcement method to solve the problems raised in the above-mentioned background technology.

[0006] The purpose of the present invention can be achieved through the following technical solutions:

[0007] A tunnel advance support device comprises an H-shaped frame, wherein the H-shaped frame is symmetrically arranged in two forms, a center plate is fixedly installed in the middle of the H-shaped frame, vertical grooves are provided on the adjacent sides of the two center plates, lifting plates are slidably installed in the vertical grooves through electric sliders, a first arc plate is fixedly installed on the top of the lifting plates on both sides, a group of expansion units are arranged on the front and rear sides of the center plate, side protection units are installed on both sides of the first arc plate and between the expansion units, and a conveying unit is arranged between the H-shaped frames on both sides.

[0008] Traction rods are circumferentially arranged on the edges of both sides of the first arc plate, and rectangular grooves are opened in the middle of both sides of the first arc plate close to the center plate. A horizontal axis is vertically installed in the rectangular groove through an electric slider, and a rotating wheel is fixedly installed in the middle of the horizontal axis, which meshes with the teeth on the lifting plate.

[0009] Lifting grooves are symmetrically arranged on both sides of the central plate. A sliding member is slidably installed in the lifting groove through an electric slider. One side of the sliding member is hinged with a push-pull plate. Guide members are fixedly installed at the four corners of the upper arc surface of the first arc plate. A connecting shaft is rotatably installed on the side of the push-pull plate away from the sliding member, and the connecting shaft slides within the guide member.

[0010] First arc-shaped grooves are symmetrically arranged on both sides of the upper arc surface of the first arc plate. Fixing members fixedly connected to the first arc plate are provided on both sides of the first arc-shaped groove, and a round rod is fixedly installed between the two fixing members.

[0011] The expansion unit includes electric telescopic plates. There are two groups of electric telescopic plates, and the two electric telescopic plates in each group are respectively slidably connected within the H-shaped frames on both sides. A second arc plate is fixedly installed between the electric telescopic plates in each group. Moving grooves are symmetrically arranged on both sides of the second arc plate. A stabilizing arc plate is slidably installed through electric sliders in the moving grooves on both sides. The stabilizing arc plate is located on the lower arc surface of the second arc plate and is slidably connected to it. Second arc-shaped grooves are symmetrically arranged on both sides of the upper arc surface of the second arc plate.

[0012] The side protection unit includes a first connecting member. The first connecting member is located within the first arc-shaped groove and is slidably connected to it through an electric slider. A second connecting member is slidably installed within the second arc-shaped groove. A central protection plate is rotatably installed on the side of the first connecting member away from the first arc-shaped groove, and a side protection plate is rotatably installed on the side of the second connecting member away from the second arc-shaped groove. Guide rods are fixedly installed on both the upper and lower sides of the central protection plate, and the upper and lower two guide rods respectively penetrate and slide on the upper and lower sides of the side protection plate. An electric push rod is fixedly installed on one side of the first connecting member, and the electric push rod is hinged to the central protection plate.

[0013] The conveying unit includes U-shaped frames. There are two U-shaped frames, which are respectively fixedly connected to the H-shaped frames on both sides. A sliding plate is slidably installed on the side close to each other of the two U-shaped frames. Vertical boxes are symmetrically installed on both sides of the upper end surface of the sliding plate. Stabilizing members slidably connected to the H-shaped frames are fixedly installed on the two sides of the vertical boxes away from each other.

[0014] A top groove is vertically opened on the upper end surface of the vertical box. Cross grooves are opened on one side close to each other of the two vertical boxes. A driving wheel is slidably installed in the middle of the inner cavity of the vertical box through an electric slider. Two driving wheels, one above and the other below, are each engaged with a toothed plate. The toothed plate below the driving wheel is slidably connected to the vertical box. A sliding block is slidably installed in the top groove. A rotating rod is rotatably installed with internal threads in the sliding block. The bottom of the rotating rod is rotatably connected to the toothed plate above the driving wheel. An L-shaped plate is fixedly installed on one side of the upper toothed plate. A rectangular plate is provided between the two vertical boxes. The L-shaped plate is fixedly connected to the rectangular plate and the L-shaped plate is located within the cross groove. Spring rods are fixedly installed at the front and back of the upper end surface of the rectangular plate. A supporting plate is fixedly installed between the multiple spring rods. Through grooves for facilitating the adjustment of the rotating rods on both sides are opened on both sides.

[0015] Ear plates are symmetrically installed on one side of the H-shaped frame, a hydraulic cylinder is fixedly installed on the lower end surface of the ear plate, and a support seat is fixedly installed on the lower end surface of the hydraulic cylinder. A plurality of rollers are evenly spaced on the side of the H-shaped frame away from the center plate, the traction rods on both sides are fixedly connected to the second arc plates on both sides, the connecting shafts on both sides are fixedly connected to the second arc plates on both sides, and the round rod is placed in the middle of the center plate.

[0016] Another object of the present invention is to provide a method for advance reinforcement of tunnel excavation, comprising the following steps:

[0017] S1: Equipment entry and deployment:

[0018] Push the device as a whole into the tunnel, then adjust the expansion unit according to the required support length, open the electric slider to drive the slides on both sides of the center plate to slide up and down, and when the slides slide up and down, the push-pull plates on both sides drive the first arc plates on both sides to move closer to or away from each other, thereby expanding the two first arc plates to the required support range;

[0019] S2: Support of top of tunnel:

[0020] When supporting the top of the tunnel, the electric slider is opened to make the lifting plate slide upward in the vertical groove. At this time, the rotating wheel cooperates to rotate to make the lifting plate drive the first arc plate to rise more stably. At the same time, the electric telescopic plate is turned on to push up the second arc plates on both sides to move up and keep moving up synchronously with the first arc plate, thereby supporting the top of the tunnel cavity;

[0021] S3: Support on both sides of the tunnel:

[0022] When supporting both sides of the tunnel, the electric push rod is opened to adjust the angle of the center guard plate on the round rod. When adjusting, the center guard plate drives the side guard plates on both sides to adjust their angles through the guide rod, so that the side guard plates and the center guard plate can support the sides of the tunnel at different angles, making it more widely applicable. At the same time, the first connecting piece slides in the first arc groove, which facilitates the side guard plates and the center guard plate to support the sides of the tunnel in a wider range.

[0023] Beneficial effects of the present invention:

[0024] 1. The present invention drives the slide to perform lifting operations in the lifting groove by opening the electric slider. At this time, the push-pull plate moves along with the lifting of the slide so that it pushes and pulls the two second arc plates on both sides. When the two second arc plates move closer or farther away from each other, the two corresponding electric telescopic plates under the second arc plates slide on the two H-shaped frames respectively, thereby meeting the support requirements of the entire device in different ranges in the tunnel.

[0025] 2. The present invention opens and retracts the electric push rod to rotate the center guard plate along the round rod, so that the center guard plate and the side guard plates can fit and support the two sides of the tunnel. The electric slider is opened to drive the first connecting part to slide in the first arc groove, so that the position of the center guard plate and the side guard plates can be moved to meet the support of different positions of the inner wall of the tunnel.

[0026] 3. The present invention opens an electric slider to drive the driving wheel to rotate, and when the driving wheel rotates, it drives the upper tooth plate to move. When the upper tooth plate moves, the L-shaped plate moves horizontally in the cross groove, thereby moving the rectangular plate and the supporting plate. At this time, the materials placed on the supporting plate are quickly and conveniently transported. Compared with the existing support device, the present invention can support the tunnel while also quickly transporting the materials in the tunnel.

[0027] 4. The present invention drives the lifting plate to slide upward in the vertical groove by opening the electric slider, thereby moving the first arc plate upward to the top of the tunnel cavity. When the first arc plate moves up, the electric telescopic plate is opened synchronously to make the second arc plate synchronously follow the first arc plate to move up so that it can support the top of the tunnel cavity. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0029] Figure 1 It is a schematic diagram of the overall front structure of the present invention;

[0030] Figure 2 It is a schematic diagram of the structure between the center plate and the first arc plate of the present invention;

[0031] Figure 3 It is a partial cross-sectional structural schematic diagram of the center plate and the first arc plate of the present invention;

[0032] Figure 4 It is a schematic diagram of the structure between the second arc plate and the H-shaped frame of the present invention;

[0033] Figure 5 It is a schematic diagram of the structure of the side guard unit of the present invention;

[0034] Figure 6 It is a schematic diagram of the side section structure between the first arc plate and the H-shaped frame of the present invention;

[0035] Figure 7 The present invention Figure 6 A schematic diagram of the enlarged structure of part A;

[0036] Figure 8 It is a schematic diagram of the structure of the conveying unit of the present invention;

[0037] Fig. 9 It is a schematic diagram of the side sectional structure of the conveying unit of the present invention;

[0038] Fig.10 It is a schematic diagram of the structure between the vertical box and the L-shaped plate of the present invention;

[0039] Fig.11 It is a schematic diagram of the inner cavity structure of the vertical box of the present invention.

[0040] The reference numerals in the figures are as follows:

[0041] 1. H-shaped frame; 11. Ear plate; 12. Hydraulic cylinder; 13. Support seat; 14. Roller; 2. Center plate; 20. Lifting slot; 201. Sliding piece; 202. Push-pull plate; 203. Guide piece; 204. Connecting shaft; 21. Vertical slot; 22. Lifting plate; 23. First arc plate; 230. Drawbar; 231. Rectangular slot; 232. Horizontal axis; 233. Rotating wheel; 234. First arc slot; 235. Fixing piece; 236. Round rod; 3. Extension unit; 31. Electric telescopic plate; 32. Second arc plate; 33. Moving slot; 3 4. Stabilizing arc plate; 35. Second arc groove; 4. Side guard unit; 41. First connecting piece; 411. Electric push rod; 42. Second connecting piece; 43. Center guard plate; 44. Side guard plate; 45. Guide rod; 5. Conveying unit; 51. Profile frame; 52. Slide plate; 53. Vertical box; 531. Top groove; 532. Cross groove; 533. Driving wheel; 534. Tooth plate; 535. Sliding block; 536. Turn rod; 537. Rectangular plate; 538. Spring rod; 539. Support plate; 5390. Through groove; 54. Stabilizing piece. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] like Figure 1-Figure 11As shown, a tunnel advance support device comprises an H-shaped frame 1, wherein the H-shaped frame 1 is symmetrically arranged in two, a center plate 2 is fixedly installed in the middle of the H-shaped frame 1, a vertical groove 21 is provided on the adjacent side of the two center plates 2, a lifting plate 22 is slidably installed in the vertical groove 21 through an electric slider, a first arc plate 23 is fixedly installed on the top of the lifting plates 22 on both sides, a group of expansion units 3 are arranged on the front and rear sides of the center plate 2, side protection units 4 are installed on both sides of the first arc plate 23 and between the expansion units 3, and a conveying unit 5 is arranged between the H-shaped frames 1 on both sides.

[0044] The first arc plate 23 and the expansion unit 3 facilitate support for the top of the tunnel. The expansion unit 3 is adjusted on the H-frame 1 to meet support requirements in different ranges. The side protection unit 4 facilitates side support on both sides of the tunnel cavity, making the support range inside the tunnel more comprehensive and further enhancing the safety of tunnel support. The conveying unit 5 facilitates rapid conveying and delivery of materials in the tunnel, bringing convenience to production operations in the tunnel.

[0045] A traction rod 230 is circumferentially arranged on the edges of both sides of the first arc plate 23, and a rectangular groove 231 is opened in the middle of both sides of the first arc plate 23 close to the center plate 2, and a horizontal shaft 232 is vertically installed in the rectangular groove 231 through an electric slider, and a rotating wheel 233 is fixedly installed in the middle of the horizontal shaft 232, and the rotating wheel 233 is engaged with the teeth on the lifting plate 22.

[0046] Lifting grooves 20 are symmetrically provided on both sides of the center plate 2, and a slide 201 is slidably installed in the lifting groove 20 through an electric slider. A push-pull plate 202 is hinged on one side of the slide 201, and guide members 203 are fixedly installed at the four corners of the arc surface on the first arc plate 23. A connecting shaft 204 is rotatably installed on the side of the push-pull plate 202 away from the slide 201, and the connecting shaft 204 is located in the guide member 203 and slides.

[0047] When supporting the top of the tunnel, the electric slider is opened to drive the lifting plate 22 to slide upward in the vertical groove 21, so that the first arc plate 23 moves up to the top of the tunnel cavity. When the first arc plate 23 moves up, the electric telescopic plate 31 is synchronously opened to make the second arc plate 32 move up with the first arc plate 23 to support the top of the tunnel cavity. Before the second arc plate 32 and the first arc plate 23 support the top of the tunnel, when the required support range is adjusted, the electric slider is opened to drive the slide 201 in the lifting groove 20 The lifting operation is performed inside, and the push-pull plate 202 moves following the lifting of the slide 201 so as to push and pull the two second arc plates 32 on both sides. When the two second arc plates 32 move closer to or away from each other, the two corresponding electric telescopic plates 31 under the second arc plates 32 slide on the two H-shaped frames respectively, thereby meeting the support requirements of the entire device in different ranges in the tunnel. At the same time, the arrangement of the two second arc plates 32 and the first arc plate 23 also meets the multi-point support of the inner cavity of the tunnel, thereby enhancing its support effect.

[0048] First arc grooves 234 are symmetrically formed on both sides of the arc surface of the first arc plate 23 . Fixing members 235 fixedly connected to the first arc plate 23 are provided on both sides of the first arc groove 234 . A round rod 236 is fixedly installed between the two fixing members 235 .

[0049] The expansion unit 3 includes an electric telescopic plate 31, which is provided with two groups. The two electric telescopic plates 31 in each group are respectively located in the H-shaped frame 1 on both sides and are slidably connected. A second arc plate 32 is fixedly installed between the electric telescopic plates 31 in each group. Moving grooves 33 are symmetrically opened on both sides of the second arc plate 32. Stable arc plates 34 are slidably installed in the moving grooves 33 on both sides through electric sliders. The stable arc plate 34 is located on the lower arc surface of the second arc plate 32 and is slidably connected thereto. Second arc grooves 35 are symmetrically opened on both sides of the upper arc surface of the second arc plate 32.

[0050] The electric slider is opened to drive the stabilizing arc plate 34 to slide in the moving groove 33 , thereby reinforcing and supporting different positions below the second arc plate 32 .

[0051] The side guard unit 4 includes a first connecting member 41, which is located in the first arc groove 234 and is slidably connected to the first arc groove 234 through an electric slider. A second connecting member 42 is slidably installed in the second arc groove 35. A center guard plate 43 is rotatably installed on the side of the first connecting member 41 away from the first arc groove 234, and a side guard plate 44 is rotatably installed on the side of the second connecting member 42 away from the second arc groove 35. Guide rods 45 are fixedly installed on the upper and lower sides of the center guard plate 43. The upper and lower guide rods 45 respectively penetrate and slide on the upper and lower sides of the side guard plate 44. An electric push rod 411 is fixedly installed on one side of the first connecting member 41, and the electric push rod 411 is hinged to the center guard plate 43.

[0052] When supporting both sides inside the roadway, the electric push rod 411 starts to expand and contract, causing the central guard plate 43 to rotate along the round rod 236, so that the central guard plate 43 and the side guard plates 44 fit and support both sides inside the roadway. By starting the electric slider to drive the first connecting piece 41 to slide in the first arc-shaped groove 234, the positions of the central guard plate 43 and the side guard plates 44 are moved to meet the support requirements at different positions on the inner sidewall of the roadway. At the same time, the setting of the guide rod 45 enables the side guard plates 44 to follow the central guard plate 43 for angle adjustment.

[0053] The conveying unit 5 includes a U-shaped frame 51. There are two U-shaped frames 51, which are respectively fixedly connected to the H-shaped frames 1 on both sides. On the side where the two U-shaped frames 51 are close to each other, a sliding plate 52 is slidably installed. On both sides of the upper end surface of the sliding plate 52, vertical boxes 53 are symmetrically installed. On the two sides where the vertical boxes 53 are far from each other, stabilizing pieces 54 that are slidably connected to the H-shaped frames 1 are fixedly installed.

[0054] On the upper end surface of the vertical box 53, a top groove 531 is vertically opened. On the side where the two vertical boxes 53 are close to each other, a cross groove 532 is opened. In the middle of the inner cavity of the vertical box 53, a driving wheel 533 is slidably installed through an electric slider. Both the upper and lower driving wheels 533 are engaged with a toothed plate 534. The toothed plate 534 below the driving wheel 533 is slidably connected to the vertical box 53. A sliding block 535 is slidably installed in the top groove 531. A rotating rod 536 is rotatably installed in the sliding block 535 through threads. The bottom of the rotating rod 536 is rotatably connected to the toothed plate 534 above the driving wheel 533. On one side of the upper toothed plate 534, an L-shaped plate is fixedly installed. A rectangular plate 537 is jointly provided between the two vertical boxes 53. The L-shaped plate is fixedly connected to the rectangular plate 537 and the L-shaped plate is located in the cross groove 532. On the front and back of the upper end surface of the rectangular plate 537, spring rods 538 are fixedly installed. A supporting plate 539 is fixedly installed among the multiple spring rods 538. Through grooves 5390 for facilitating the adjustment of the rotating rods 536 on both sides are opened on both sides.

[0055] When the materials inside the roadway are conveyed over a short distance, the materials are placed above the supporting plate 539. Due to the gravity of the materials, the L-shaped plate is located in the middle of the cross groove 532. At the same time, the vertical box 53 supports the lower part of the supporting plate 539 to ensure the stability of the supporting plate 539 during movement. Subsequently, the electric slider is started to drive the driving wheel 533 to rotate. When the driving wheel 533 rotates, it drives the upper toothed plate 534 to move. When the upper toothed plate 534 moves, it moves horizontally in the cross groove 532 through the L-shaped plate, so that the rectangular plate 537 and the supporting plate 539 move. At this time, the materials placed above the supporting plate 539 are transported quickly and conveniently. Compared with the existing supporting devices, the present invention can support the roadway and quickly convey the materials inside the roadway at the same time.

[0056] An ear plate 11 is symmetrically installed on one side of the H-shaped frame 1, a hydraulic cylinder 12 is fixedly installed on the lower end surface of the ear plate 11, and a support seat 13 is fixedly installed on the lower end surface of the hydraulic cylinder 12. A plurality of rollers 14 are evenly spaced on the side of the H-shaped frame 1 away from the center plate 2. The traction rods 230 on both sides are fixedly connected to the second arc plates 32 on both sides, respectively. The connecting shafts 204 on both sides are fixedly connected to the second arc plates 32 on both sides, respectively. The round rod 236 is placed in the middle of the center plate 2.

[0057] The rollers 14 are provided to facilitate the movement of the device as a whole in the tunnel, and the support base 13 is brought into contact with the ground by opening the hydraulic cylinder 12, thereby ensuring the stability of the device as a whole and further strengthening the stable support in the tunnel.

[0058] Another object of the present invention is to provide a method for advance reinforcement of tunnel excavation, comprising the following steps:

[0059] S1: Equipment entry and deployment:

[0060] The device is pushed into the tunnel as a whole, and then the expansion unit 3 is adjusted according to the required support length. The electric slider is opened to drive the slides 201 on both sides of the center plate 2 to slide up and down. When the slides 201 slide up and down, the push-pull plates 202 on both sides drive the first arc plates 23 on both sides to move closer to or away from each other, thereby expanding the two first arc plates 23 to the required support range;

[0061] S2: Support of top of tunnel:

[0062] When supporting the top of the tunnel, the electric slider is opened to make the lifting plate 22 slide upward in the vertical groove 21. At this time, the rotating wheel 233 cooperates to rotate so that the lifting plate 22 drives the first arc plate 23 to rise more stably. At the same time, the electric telescopic plate 31 is turned on to push up so that the second arc plates 32 on both sides move up and keep moving up synchronously with the first arc plate 23, thereby supporting the top of the tunnel cavity;

[0063] S3: Support on both sides of the tunnel:

[0064] When supporting both sides of the tunnel, the electric push rod 411 is opened to adjust the angle of the center guard plate 43 on the round rod 236. When adjusting, the center guard plate 43 drives the side guard plates 44 on both sides to adjust the angle through the guide rod 45, so that the side guard plates 44 and the center guard plate 43 can support the sides of the tunnel at different angles, making it more widely applicable. At the same time, the first connecting member 41 slides in the first arc groove 234, which facilitates the side guard plates 44 and the center guard plate 43 to support the sides of the tunnel in a wider range.

[0065] When the present invention is used, the device is first pushed into the tunnel as a whole, and the first arc plate 23 and the expansion unit 3 are used to support the top of the tunnel. At the same time, the expansion unit 3 is adjusted on the H-shaped frame 1 to meet the support requirements of different ranges. The side protection unit 4 is provided to facilitate the side support of both sides of the tunnel cavity, so that the support range of the tunnel is more comprehensive, and the safety of the tunnel support is further enhanced. The conveying unit 5 is provided to facilitate the rapid conveying and delivery of materials in the tunnel, which brings convenience to the production operation in the tunnel.

[0066] When supporting the top of the tunnel, the electric slider is opened to drive the lifting plate 22 to slide upward in the vertical groove 21, so that the first arc plate 23 moves up to the top of the tunnel cavity. When the first arc plate 23 moves up, the electric telescopic plate 31 is synchronously opened to make the second arc plate 32 move up with the first arc plate 23 to support the top of the tunnel cavity. Before the second arc plate 32 and the first arc plate 23 support the top of the tunnel, when the required support range is adjusted, the electric slider is opened to drive the slide 201 in the lifting groove 20 The lifting operation is performed inside the tunnel. At this time, the push-pull plate 202 moves along with the lifting of the slide 201 so as to push and pull the two second arc plates 32 on both sides. When the two second arc plates 32 are moved closer or farther away from each other, the two corresponding electric telescopic plates 31 below the second arc plates 32 slide on the two H-shaped frames respectively, thereby meeting the support requirements of the entire device in different ranges in the tunnel. At the same time, the arrangement of the two second arc plates 32 and the first arc plate 23 also meets the multi-point support of the inner cavity of the tunnel, so that its support effect is enhanced;

[0067] When supporting both sides of the tunnel, the electric push rod 411 is opened and retracted to make the center guard plate 43 rotate along the round rod 236, so that the center guard plate 43 and the side guard plates 44 fit the two sides of the tunnel for support. The electric slider is opened to drive the first connecting member 41 to slide in the first arc groove 234, so that the positions of the center guard plate 43 and the side guard plates 44 are moved to meet the support of different positions of the side wall of the tunnel. At the same time, the setting of the guide rod 45 can make the side guard plates 44 follow the center guard plate 43 for angle adjustment;

[0068] When the material in the tunnel is transported over a short distance, the material is placed on top of the support plate 539. Due to the gravity of the material, the L-shaped plate is located in the middle of the cross groove 532. At the same time, the vertical box 53 supports the lower part of the support plate 539 to ensure the stability of the support plate 539 when it moves. Then the electric slider is turned on to drive the driving wheel 533 to rotate. When the driving wheel 533 rotates, it drives the upper tooth plate 534 to move. When the upper tooth plate 534 moves, it moves horizontally in the cross groove 532 through the L-shaped plate, thereby moving the rectangular plate 537 and the support plate 539. At this time, the material placed on the support plate 539 is quickly and conveniently transported. Compared with the existing support device, the present invention can support the tunnel while also quickly transporting the material in the tunnel.

[0069] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A tunnel advance support device, comprising an H-shaped frame (1), characterized in that: The H-shaped frame (1) is symmetrically arranged, a center plate (2) is fixedly installed in the middle of the H-shaped frame (1), a vertical groove (21) is opened on the adjacent side of the two center plates (2), a lifting plate (22) is slidably installed in the vertical groove (21) via an electric slider, a first arc plate (23) is fixedly installed on the top of the lifting plates (22) on both sides, a group of expansion units (3) are arranged on the front and rear sides of the center plate (2), side guard units (4) are installed between the two sides of the first arc plate (23) and the expansion units (3), and a conveying unit (5) is arranged between the H-shaped frames (1) on both sides.

2. A tunnel advance support device according to claim 1, characterized in that: The edges of both sides of the first arc plate (23) are circumferentially provided with traction rods (230); the middle parts of both sides of the first arc plate (23) close to the center plate (2) are provided with rectangular grooves (231); a horizontal shaft (232) is vertically installed in the rectangular groove (231) via an electric slider; a rotating wheel (233) is fixedly installed in the middle part of the horizontal shaft (232); and the rotating wheel (233) is meshed with teeth on the lifting plate (22).

3. A tunnel advance support device according to claim 1, characterized in that: The central plate (2) is symmetrically provided with lifting grooves (20) on both sides, a slide (201) is slidably installed in the lifting groove (20) via an electric slider, a push-pull plate (202) is hinged on one side of the slide (201), guide members (203) are fixedly installed at the four corners of the upper arc surface of the first arc plate (23), a connecting shaft (204) is rotatably installed on the side of the push-pull plate (202) away from the slide (201), and the connecting shaft (204) is located in the guide member (203) and slides.

4. The tunnel advance support device according to claim 1, characterized in that: First arc-shaped grooves (234) are symmetrically provided on both sides of the arc surface of the first arc plate (23), and fixing members (235) fixedly connected to the first arc plate (23) are provided on both sides of the first arc-shaped groove (234), and a round rod (236) is fixedly installed between the two fixing members (235).

5. The tunnel advance support device according to claim 1, characterized in that: The expansion unit (3) comprises an electric telescopic plate (31), wherein the electric telescopic plate (31) is provided with two groups, and the two electric telescopic plates (31) in each group are respectively located in the H-shaped frame (1) on both sides and are slidably connected, and a second arc plate (32) is fixedly installed between the electric telescopic plates (31) in each group, and movable grooves (33) are symmetrically opened on both sides of the second arc plate (32), and stable arc plates (34) are slidably installed in the movable grooves (33) on both sides through electric sliders, and the stable arc plate (34) is located on the lower arc surface of the second arc plate (32) and is slidably connected thereto, and second arc grooves (35) are symmetrically opened on both sides of the upper arc surface of the second arc plate (32).

6. The tunnel advance support device according to claim 1, characterized in that: The side protection unit (4) includes a first connecting member (41) which is located in the first arc-shaped groove (234) and is slidably connected thereto through an electric slider. A second connecting member (42) is slidably installed in the second arc-shaped groove (35). A central protection plate (43) is rotatably installed on one side of the first connecting member (41) away from the first arc-shaped groove (234). A side protection plate (44) is rotatably installed on one side of the second connecting member (42) away from the second arc-shaped groove (35). Guide rods (45) are fixedly installed on both the upper and lower sides of the central protection plate (43), and the upper and lower two guide rods (45) respectively penetrate and slide on the upper and lower sides of the side protection plate (44). An electric push rod (411) is fixedly installed on one side of the first connecting member (41), and the electric push rod (411) is hinged to the central protection plate (43).

7. The tunnel advance support device according to claim 1, characterized in that: The conveying unit (5) includes a U-shaped frame (51). There are two U-shaped frames (51) which are respectively fixedly connected to the H-shaped frames (1) on both sides. A sliding plate (52) is slidably installed on the side where the two U-shaped frames (51) are close to each other. Vertical boxes (53) are symmetrically installed on both sides of the upper end surface of the sliding plate (52). Stabilizing members (54) which are slidably connected to the H-shaped frame (1) are fixedly installed on the two sides of the vertical boxes (53) away from each other.

8. The tunnel advance support device according to claim 7, characterized in that: A top groove (531) is vertically opened on the upper end surface of the vertical box (53). Cross grooves (532) are opened on the sides where the two vertical boxes (53) are close to each other. A driving wheel (533) is slidably installed in the middle of the inner cavity of the vertical box (53) through an electric slider. Two upper and lower driving wheels (533) are respectively engaged with a toothed plate (534). The toothed plate (534) below the driving wheel (533) is slidably connected to the vertical box (53). A sliding block (535) is slidably installed in the top groove (531). A rotating rod (536) is rotationally installed in the sliding block (535) in a threaded manner. The bottom of the rotating rod (536) is rotationally connected to the toothed plate (534) above the driving wheel (533). An L-shaped plate is fixedly installed on one side of the upper toothed plate (534). A rectangular plate (537) is jointly provided between the two vertical boxes (53). The L-shaped plate is fixedly connected to the rectangular plate (537) and the L-shaped plate is located in the cross groove (532). Spring rods (538) are fixedly installed on the front and back of the upper end surface of the rectangular plate (537). A supporting plate (539) is jointly fixedly installed between the multiple spring rods (538). Through grooves (5390) for facilitating the adjustment of the rotating rods (536) on both sides are opened on both sides.

9. The tunnel advance support device according to claim 8, characterized in that: Lugs (11) are symmetrically installed on the front and back of one side of the H-shaped frame (1). A hydraulic cylinder (12) is fixedly installed on the lower end surface of the lug (11). A support seat (13) is fixedly installed on the lower end surface of the hydraulic cylinder (12). A plurality of rollers (14) are equidistantly arranged on the side of the H-shaped frame (1) away from the central plate (2). The two traction rods (230) are respectively fixedly connected to the two second arc plates (32) on both sides. The two connecting shafts (204) are respectively fixedly connected to the two second arc plates (32) on both sides. The round rod (236) is placed in the middle of the central plate (2).

10. A method for reinforcing a tunnel excavation in advance, using the tunnel advance support device as claimed in claim 9 to reinforce the excavation mining tunnel, characterized in that: The method for advanced reinforcement of roadway tunneling includes the following steps: S1: Equipment arrival and deployment: The device is pushed as a whole into the tunnel, and then the expansion unit (3) is adjusted according to the required support length. The electric slider is opened to drive the slides (201) on both sides of the center plate (2) to slide up and down. When the slides (201) slide up and down, the push-pull plates (202) on both sides drive the first arc plates (23) on both sides to move closer to or away from each other, thereby expanding the two first arc plates (23) to the required support range; S2: Support of top of tunnel: When supporting the top of the tunnel, the electric slide block is opened to make the lifting plate (22) slide upward in the vertical groove (21). At this time, the rotating wheel (233) cooperates to rotate so that the lifting plate (22) drives the first arc plate (23) to rise more stably. At the same time, the electric telescopic plate (31) is opened to push up so that the second arc plates (32) on both sides move upward and keep moving upward synchronously with the first arc plate (23), thereby supporting the top of the tunnel cavity. S3: Support on both sides of the tunnel: When supporting both sides of the tunnel, the electric push rod (411) is opened to adjust the angle of the center guard plate (43) on the round rod (236). When adjusting, the center guard plate (43) drives the side guard plates (44) on both sides to adjust the angle through the guide rod (45), so that the side guard plates (44) and the center guard plate (43) can support the sides of the tunnel at different angles, making it more widely applicable. At the same time, the first connecting member (41) slides in the first arc groove (234), so that the side guard plates (44) and the center guard plate (43) can support the sides of the tunnel in a wider range.

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