Reinforcing device for ultra-small clear distance tunnel construction

Abstract

The invention belongs to the technical field of tunnel construction, and particularly relates to an ultra-small clear distance tunnel construction reinforcing device which comprises a plurality of supporting plates, a support is arranged in the middles of the supporting plates, the support supports the supporting plates through a plurality of supporting assemblies, and each supporting assembly comprises a first cylinder arranged on the periphery of the support. Pressing assemblies are arranged on the two sides and the upper end of the support correspondingly, each pressing assembly comprises a plurality of first cylindrical rods arranged in the two sides and the upper end of the support, the first cylindrical rods are used for extruding the supporting plates, the supporting plates are extruded by driving the first cylindrical rods, then the support is moved towards the interior of the tunnel, and the supporting plates on the outer side are prevented from falling off; and meanwhile, the support can be pushed into the tunnel, the support does not need to be assembled in the tunnel, the interior of the tunnel can be dug and supported by repeating the step, the support carrying stroke is reduced, and the working efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of tunnel construction, in particular to a reinforcement device for ultra-small clearance tunnel construction. Background Art

[0002] With the development of cities, the demand for electricity is increasing. Shallow buried tunnel construction methods can be seen everywhere in power engineering construction. Due to large-scale construction, in order to achieve efficient use of urban underground space and build highly compact cities, the number of projects with complex working conditions such as shallow burial depth, small clearance, mutual crossing between tunnels, and multiple tunnels in parallel is gradually increasing. The construction disturbance and surface settlement of double-hole tunnel construction are significantly different from those of single-hole tunnels, and how to ensure that the soil between tunnels does not fall is also a problem that needs to be solved at present.

[0003] A patent with announcement number CN117780362B discloses a rock column replacement and reinforcement structure and construction method for ultra-small clearance tunnels. The structure divides the middle rock column into three areas: upper flange area, core replacement area and lower flange area. Grouting reinforcement is performed on the upper flange area and the lower flange area. The core replacement area is reinforced by excavation replacement and prestressed tension screws. This can effectively improve the surrounding rock stability of the upper flange area of ​​the middle rock column, the base bearing capacity of the lower flange area, and the compressive strength and annular and radial stiffness of the core replacement area. The prestress of the tension screws is applied to the channel steel, which is then transferred to the primary support steel arch frame by the channel steel. This can prevent the surface compression rupture of the primary support of the leading tunnel and the primary support of the subsequent tunnel from weakening the effect of the prestressing while reinforcing the middle rock column. This ensures the construction safety of the tunnel and shortens the tunnel breakthrough period.

[0004] In the above-mentioned prior art, when digging a tunnel, it is necessary to support the inner wall when digging the tunnel. The prior art generally adopts a method of supporting the tunnel while digging. After digging a section of the tunnel, support plates are immediately used for support to prevent the tunnel from collapsing. Subsequently, the tunnel is continuously excavated, and the inner wall of the tunnel needs to be supported. The supporting bracket needs to be transported to the inside of the tunnel for re-building. The deeper the tunnel is excavated, the more troublesome it is to build the bracket. In the process of transporting and moving the bracket, a long time is wasted, resulting in low work efficiency.

[0005] To this end, the present invention provides a reinforcement device for ultra-small clearance tunnel construction. Summary of the invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve its technical problems is: a reinforcement device for ultra-small clearance tunnel construction described in the present invention includes a plurality of support plates, and the support plates are all used to support the inner wall of the tunnel. A bracket is provided in the middle of a plurality of the support plates, and the bracket supports the support plate through a plurality of support assemblies. The support assembly includes a first cylinder provided around the bracket, and pressing assemblies are respectively provided on both sides and the upper end of the bracket. The pressing assembly includes a plurality of first cylindrical rods provided inside the two sides and the upper end of the bracket, the first cylindrical rod is used to squeeze the support plate, and a second cylindrical rod is respectively provided at one end of the first cylindrical rod, and a fifth cylinder is respectively fixed to the inner side of the two sides and the upper end of the bracket, and a third cylindrical rod is slidably provided inside one end of the fifth cylinder, and a fourth cylinder is respectively provided at one end of the third cylindrical rod away from the fifth cylinder, and the second cylindrical rod can slide inside the fourth cylinder at one end away from the first cylindrical rod.

[0008] Preferably, first slide blocks are fixedly connected to both sides of the middle portion of the lower end of the bracket, and third slide rails are slidably arranged on one side opposite to the first slide block.

[0009] Preferably, the middle portion of the bracket is square, and both sides of the upper end of the bracket are beveled edges.

[0010] Preferably, a third rectangular hole is respectively provided in the middle of each of the first cylindrical rods, a second sliding block is slidably provided in the middle of each of the third rectangular holes, and a circular hole is provided in the middle of each of the second sliding blocks.

[0011] Preferably, the third cylindrical rod is rotatably connected to the fourth cylinder at one end away from the fifth cylinder, the second cylindrical rod is fixedly connected to a fixed block at one end away from the fourth cylinder, the first cylindrical rod can rotate in the middle of the fixed block, and scale lines are provided around one end of the first cylindrical rod close to the fixed block.

[0012] Preferably, the support assembly also includes a first cylinder, a rotating block is rotatably provided at one end of the first cylinder away from the bracket, a screw rod is threadedly connected to the middle part of the rotating block, the screw rod can slide inside the first cylinder, a rectangular groove is provided on one side of the screw rod, a limit block is provided inside the first cylinder, and the limit block can slide in the rectangular groove.

[0013] Preferably, one end of the screw rod away from the first cylinder is fixedly connected to an extrusion plate via a first spring.

[0014] Preferably, second rectangular holes are respectively provided on both sides of the bracket, first rectangular holes are respectively provided on both sides obliquely above the bracket, casting components are respectively provided in the middle of the first rectangular hole and the second rectangular hole, and the casting components include second cylinders provided in the middle of the first rectangular hole and the second rectangular hole, and the second cylinder is used to support the casting pipe.

[0015] Preferably, a sliding component is respectively provided on one side of the first rectangular hole and the second rectangular hole, and the sliding component includes a first slide rail respectively fixed on both sides of the first rectangular hole and the second rectangular hole, and a second slide rail is slidingly arranged together with the two first slide rails, and the second cylinder can slide on the corresponding second slide rails respectively.

[0016] Preferably, a third cylinder is slidably disposed outside the second cylinder, a first ring is slidably disposed outside the third cylinder, the first ring can slide on the corresponding second slide rail, and the first ring is fixedly connected to the third cylinder via a second spring.

[0017] The beneficial effects of the present invention are as follows:

[0018] 1. The reinforcement device for ultra-small clearance tunnel construction described in the present invention, after excavating the interior of the tunnel, drives the first cylindrical rod to squeeze the support plate, and then moves the bracket to the interior of the tunnel to prevent the outer support plate from falling, and at the same time pushes the bracket to the interior of the tunnel, without the need to assemble the bracket inside the tunnel. After the bracket is moved to the interior of the tunnel, the first cylindrical rod always squeezes the outer support plate to prevent it from falling, thereby ensuring construction safety. Repeating this step can continuously excavate and support the interior of the tunnel, reducing the travel of transporting the bracket and improving work efficiency.

[0019] 2. The reinforcement device for ultra-small clearance tunnel construction described in the present invention drives the first cylindrical rod to be close to the inner wall of the tunnel, and the fourth cylinder drives the first cylindrical rod to rotate on the side of the third cylindrical rod through the second cylindrical rod. At the same time, the second cylindrical rod slides in the fourth cylinder, so that the first cylindrical rod can slide on the inner wall of the tunnel, and then the second slider is driven to slide in the third rectangular hole to insert the steel bars into the inner wall of the tunnel in turn to reinforce the inner wall of the tunnel. By driving the first cylindrical rod to rotate in the middle of the fixed block, the first cylindrical rod drives the second slider to rotate, and the angle of steel bar insertion can be controlled by observing the scale line. The density and angle of the inserted steel bars can be adjusted according to tunnels of different sizes and curvatures. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below in conjunction with the accompanying drawings.

[0021] Figure 1 is a three-dimensional diagram of the first embodiment of the present invention;

[0022] Figure 2 It is a schematic diagram of the position of the support plate;

[0023] Figure 3 is a schematic diagram of the position of the first cylindrical rod;

[0024] Figure 4 is a schematic diagram of the first cylindrical rod structure;

[0025] Figure 5 is a schematic diagram of the support component structure;

[0026] Figure 6 is a schematic diagram of the support structure;

[0027] Figure 7 is a schematic diagram of the second cylinder structure;

[0028] In the figure: 1, supporting plate; 11, bracket; 111, first rectangular hole; 112, second rectangular hole; 12, first cylinder; 121, rotating block; 122, screw rod; 1221, rectangular groove; 123, first spring; 124, extrusion plate; 13, first slide rail; 131, second slide rail; 14, second cylinder; 141, first ring; 142, third cylinder; 143, second spring; 15, first slider; 151, third slide rail; 2, first cylindrical rod; 21, fourth cylinder; 22, second cylindrical rod; 221, fixed block; 23, fifth cylinder; 231, third cylindrical rod; 24, scale line; 25, third rectangular hole; 251, second slider; 252, circular hole. DETAILED DESCRIPTION

[0029] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0030] Embodiment 1

[0031] like Figure 1-Figure 3 As shown, a reinforcement device for ultra-small clearance tunnel construction described in an embodiment of the present invention includes a plurality of support plates 1, and the support plates 1 are all used to support the inner wall of the tunnel. A bracket 11 is provided in the middle of the plurality of support plates 1, and the bracket 11 supports the support plate 1 through a plurality of support assemblies. The support assembly includes a first cylinder 12 provided around the bracket 11, and pressing assemblies are respectively provided on both sides and the upper end of the bracket 11. The pressing assembly includes a plurality of first cylindrical rods 2 provided inside the both sides and the upper end of the bracket 11, and the first cylindrical rod 2 is used to squeeze the support plate 1, and a second cylindrical rod 22 is respectively provided at one end of the first cylindrical rod 2, and a fifth cylinder 23 is respectively fixed to the inner side of both sides and the upper end of the bracket 11, and a third cylindrical rod 231 is slidably provided inside one end of the fifth cylinder 23, and a fourth cylinder 21 is respectively provided at the end of the third cylindrical rod 231 away from the fifth cylinder 23, and the end of the second cylindrical rod 22 away from the first cylindrical rod 2 can slide inside the fourth cylinder 21.

[0032] Specifically, in the prior art, when a tunnel is excavated using the dark excavation method, it is necessary to use plates to temporarily support the inner wall of the tunnel immediately after a section of the tunnel is excavated to prevent the tunnel from collapsing and ensure construction safety. Subsequently, the tunnel is continuously excavated, and the inner wall of the newly excavated tunnel needs to be continuously supported. The support device needs to be moved into the tunnel, and then the support device is assembled to support the inner wall of the tunnel. The deeper the excavation, the longer the transportation distance required. In addition, the space in the deep tunnel is limited, and it is more troublesome to build a support group device, which wastes more working time and manpower and material resources. When using the present reinforcement device, after a section of the tunnel is excavated, the bracket 11 is moved to the middle of the tunnel, and then the support plates 1 are placed on the inner wall of the tunnel respectively, and the first cylinder 12 is used to support the support plates 1, and then the inside of the tunnel is excavated. After the excavation is completed, each second cylindrical rod 22 is driven to slide in the fourth cylinder 21, driving the first cylindrical rod 2 to squeeze each support plate 1, and then the bracket 1 is driven 1 moves toward the inside of the tunnel, the bracket 11 drives each first cylinder 12 to move toward the inside of the tunnel, and at the same time the first cylindrical rod 2 squeezes the outer supporting plate 1. When the bracket 11 moves, it drives the fifth cylinder 23 to slide outside the third cylindrical rod 231, and the first cylindrical rod 2 always squeezes the outer supporting plate 1 to prevent the outer supporting plate 1 from falling. Then, the bracket 11 is rebuilt at the outermost side of the tunnel to support the outer supporting plate 1, and then the first cylindrical rod 2 is driven away from the supporting plate 1. The first excavated tunnel is located at the outermost side. When the specified time is reached and the inner wall of the tunnel is guaranteed to be in a solid state, the bracket 11 can be removed from the outermost side of the tunnel to the inside, and the first cylindrical rod 2 is driven to squeeze the supporting plate 1, and then the bracket 11 is moved toward the inside of the tunnel to prevent the outer supporting plate 1 from falling. At the same time, the bracket 11 can be pushed into the tunnel without assembling the bracket 11 inside the tunnel. Repeating this step can continuously excavate and support the inside of the tunnel, reduce the travel of carrying the bracket 11, and improve work efficiency.

[0033] like Figure 6 As shown, first slide blocks 15 are fixedly connected to both sides of the middle of the lower end of the bracket 11, and third slide rails 151 are slidably arranged on the opposite side of the first slide block 15.

[0034] Specifically, when the bracket 11 is moved into the tunnel, it is necessary to ensure that the bracket 11 is always located in the middle of the tunnel. When the bracket 11 needs to be moved into the tunnel, the third slide rails 151 on both sides are driven to move into the tunnel, and then the bracket 11 is driven to move into the tunnel. While moving, the first slider 15 is driven to slide on one side of the third slide rail 151, so that the bracket 11 moves straight into the tunnel to prevent the bracket 11 from tilting. When the tunnel excavation length becomes longer, the third slide rail 151 can be assembled.

[0035] like Figure 6 As shown, the middle portion of the bracket 11 is square, and both sides of the upper end of the bracket 11 are beveled edges.

[0036] Specifically, when excavating the inside of the tunnel, there needs to be enough space to ensure that personnel can enter and exit. The support assembly on the outside of the bracket 11 can support the support plate 1 close to the inner wall of the tunnel. At the same time, there is enough space in the middle of the lower end of the bracket 11 for workers to enter and exit, which is convenient for construction inside the tunnel.

[0037] like Figure 4 As shown, a third rectangular hole 25 is respectively provided in the middle of the first cylindrical rod 2 , a second sliding block 251 is slidably provided in the middle of the third rectangular hole 25 , and a circular hole 252 is provided in the middle of the second sliding block 251 .

[0038] Specifically, the interior of the tunnel can be reinforced by driving steel bars into the tunnel. After the tunnel excavation is completed, the first cylindrical rod 2 is driven to be close to the inner wall of the tunnel, and then the steel bars are inserted into the circular hole 252, and then inserted into the inner wall of the tunnel along the circular hole 252. By driving the second slider 251 to slide in the third rectangular hole 25, the steel bars are inserted into the inner wall of the tunnel in turn to reinforce the inner wall of the tunnel.

[0039] like Figure 4 As shown, the third cylindrical rod 231 is rotatably connected to the fourth cylinder 21 at one end away from the fifth cylinder 23, and the second cylindrical rod 22 is fixedly connected to the fixed block 221 at one end away from the fourth cylinder 21. The first cylindrical rod 2 can rotate in the middle of the fixed block 221, and scale lines 24 are provided around the end of the first cylindrical rod 2 close to the fixed block 221.

[0040] Specifically, according to tunnels of different sizes and curvatures, it is necessary to adjust the density angle of inserted steel bars. By driving the first cylindrical rod 2 close to the inner wall of the tunnel, the fourth cylinder 21 drives the first cylindrical rod 2 to rotate on the side of the third cylindrical rod 231 through the second cylindrical rod 22. At the same time, the second cylindrical rod 22 slides in the fourth cylinder 21, so that the first cylindrical rod 2 can slide on the inner wall of the tunnel, and steel bars can be inserted everywhere on the inner wall of the tunnel. At the same time, by driving the first cylindrical rod 2 to rotate in the middle of the fixed block 221, the first cylindrical rod 2 drives the second slider 251 to rotate, and the angle of steel bar insertion can be controlled by observing the scale line 24.

[0041] like Figure 5 As shown, the support assembly also includes a first cylinder 12, and a rotating block 121 is rotatably provided at one end of the first cylinder 12 away from the bracket 11. A screw rod 122 is threadedly connected to the middle of the rotating block 121, and the screw rod 122 can slide inside the first cylinder 12. A rectangular groove 1221 is provided on one side of the screw rod 122, and a limit block is provided inside the first cylinder 12, and the limit block can slide in the rectangular groove 1221.

[0042] Specifically, by driving the rotating block 121 to rotate, the screw rod 122 can be driven to slide outward inside the first cylinder 12, and the screw rod 122 squeezes each supporting plate 1 so that the supporting plates 1 at each location are closely attached to the inner wall of the tunnel.

[0043] like Figure 5 As shown, one end of the screw rod 122 away from the first cylinder 12 is fixedly connected to the extrusion plate 124 through the first spring 123 .

[0044] Specifically, when the driving screw rod 122 drives the extrusion plate 124 to squeeze the support plate 1 through the first spring 123. Since the inner wall of the tunnel is curved, the support plate 1 can fit the inner wall of the tunnel which is also curved. When the driving screw rod 122 drives the extrusion plate 124 to squeeze the support plate 1 through the first spring 123, the extrusion plate 124 can fit the support plate 1 and squeeze the first spring 123 at the same time to prevent excessive extrusion of the support plate 1.

[0045] like Figure 6-Figure 7 As shown, second rectangular holes 112 are respectively provided on both sides of the bracket 11, first rectangular holes 111 are respectively provided on both sides obliquely above the bracket 11, and casting components are respectively provided in the middle of the first rectangular hole 111 and the second rectangular hole 112. The casting components include a second cylinder 14 provided in the middle of the first rectangular hole 111 and the second rectangular hole 112, and the second cylinder 14 is used to support the casting pipe.

[0046] Specifically, after the steel bars are inserted into the inner wall of the tunnel, concrete is poured on the inner wall of the tunnel by inserting a pouring steel pipe into the inner wall of the tunnel, and then the support plate 1 is supported close to the inner wall of the tunnel, and then the concrete is waited for to solidify. After the pouring steel pipe is inserted into the inner wall of the tunnel, the pouring pipe is inserted into the second cylinder 14, and the pouring pipe and the second cylinder 14 are fixed by steel wire, and then the second cylinder 14 is driven to align the pouring pipe with the pouring steel pipe inserted into the inner wall of the tunnel, and then pouring is carried out. The second cylinder 14 supports the pouring pipe to prevent the pouring pipe from falling off during the pouring process.

[0047] like Figure 6-Figure 7 As shown, a sliding assembly is provided on one side of the first rectangular hole 111 and the second rectangular hole 112 respectively, and the sliding assembly includes a first slide rail 13 fixed on both sides of the first rectangular hole 111 and the second rectangular hole 112 respectively, and the two first slide rails 13 are slidably provided with a second slide rail 131, and the second cylinder 14 can slide on the corresponding second slide rail 131 respectively.

[0048] Specifically, by driving the second cylinder 14 to slide on the second slide rail 131, the second slide rail 131 drives the second cylinder 14 to slide on the first slide rail 13, so that the casting pipe is aligned with the casting steel pipe inserted into the inner wall of the tunnel, and then casting is performed, and each inserted casting steel pipe can be cast in turn.

[0049] Embodiment 2

[0050] like Figure 7 As shown, compared with Example 1, another embodiment of the present invention is: a third cylinder 142 is slidably arranged on the outer side of the second cylinder 14, a first ring 141 is slidably arranged on the outer side of the third cylinder 142, the first ring 141 can slide on the corresponding second slide rail 131, and the first ring 141 is fixedly connected to the third cylinder 142 by a second spring 143 on all sides.

[0051] Specifically, after the pouring pipe is fixed in the middle of the second cylinder 14, the second cylinder 14 is driven to slide inside the third cylinder 142, so that the second cylinder 14 drives the pouring pipe to approach the pouring steel pipe. Since the pouring steel pipe is inserted into the inner wall of the tunnel, during the pouring process, there is a certain impact force after the concrete enters the pouring steel pipe. The more concrete is poured, the greater the impact force. When the impact force is large, the second cylinder 14 slides to the side away from the pouring steel pipe and squeezes the second spring 143, which can buffer the impact force and prevent concrete from leaking.

[0052] Working principle: after a section of tunnel is excavated, the support 11 is moved to the middle of the tunnel, and then the first cylindrical rod 2 is driven to be close to the inner wall of the tunnel. The fourth cylinder 21 drives the first cylindrical rod 2 to rotate on the side of the third cylindrical rod 231 through the second cylindrical rod 22. At the same time, the second cylindrical rod 22 slides in the fourth cylinder 21, so that the first cylindrical rod 2 can slide on the inner wall of the tunnel, and steel bars can be inserted into all parts of the inner wall of the tunnel. At the same time, by driving the first cylindrical rod 2 to rotate in the middle of the fixed block 221, the first cylindrical rod 2 drives the second slider 251 to rotate. The angle of insertion of the steel bars can be controlled by observing the scale line 24. Then, the steel bars are inserted into the circular hole 252 and inserted into the inner wall of the tunnel along the circular hole 252. By driving the second slider 251 to slide in the third rectangular hole 25, the steel bars are inserted into the inner wall of the tunnel in turn to reinforce the inner wall of the tunnel.

[0053] After the steel bars are inserted into the inner wall of the tunnel, concrete is poured on the inner wall of the tunnel by inserting the pouring steel pipe into the inner wall of the tunnel, and then the support plate 1 is supported closely against the inner wall of the tunnel, and then the concrete is waited for to solidify. After the pouring steel pipe is inserted into the inner wall of the tunnel, the pouring pipe is inserted into the second cylinder 14, and the pouring pipe and the second cylinder 14 are fixed by steel wires. The second cylinder 14 is driven to slide on the second slide rail 131, and the second slide rail 131 drives the second cylinder 14 to slide on the first slide rail 13, so that the pouring pipe is aligned with the pouring steel pipe inserted into the inner wall of the tunnel, and then pouring is carried out, and each inserted pouring pipe can be sequentially The second cylinder 14 supports the pouring pipe to prevent it from falling off during the pouring process. After the pouring pipe is fixed in the middle of the second cylinder 14, the second cylinder 14 is driven to slide inside the third cylinder 142, so that the second cylinder 14 drives the pouring pipe to approach the pouring steel pipe. Since the pouring steel pipe is inserted into the inner wall of the tunnel, during the pouring process, there is a certain impact force after the concrete enters the pouring steel pipe. The more concrete is poured, the greater the impact force. When the impact force is large, the second cylinder 14 slides to the side away from the pouring steel pipe and squeezes the second spring 143, which can buffer the impact force and prevent concrete from leaking out.

[0054] By driving the rotating block 121 to rotate, the screw rod 122 can be driven to slide outward inside the first cylinder 12, and the screw rod 122 squeezes each support plate 1. When the screw rod 122 is driven to squeeze the support plate 1, the screw rod 122 drives the squeezing plate 124 to squeeze the support plate 1 through the first spring 123. Since the inner wall of the tunnel is curved, the support plate 1 can fit the inner wall of the tunnel, which is also curved. When the screw rod 122 is driven to drive the squeezing plate 124 to squeeze the support plate 1 through the first spring 123, the squeezing plate 124 can fit the support plate 1 and squeeze the first spring 123 at the same time to prevent the support plate 1 from being over-squeezed;

[0055] After a section of the tunnel is excavated, the bracket 11 is moved to the middle of the tunnel, and then the support plates 1 are placed on the inner wall of the tunnel respectively, and the first cylinder 12 is used to support the support plates 1, and then the inside of the tunnel is excavated. After the excavation is completed, the second cylindrical rods 22 are driven to slide in the fourth cylinder 21, driving the first cylindrical rod 2 to squeeze each support plate 1, and then the bracket 11 is driven to move into the tunnel, and the bracket 11 drives each first cylinder 12 to move into the tunnel. At the same time, the first cylindrical rod 2 squeezes the outer support plate 1, and when the bracket 11 moves, it drives the fifth cylinder 23 to slide outside the third cylindrical rod 231, and the first cylindrical rod 2 always squeezes the outer support plate 1. Plate 1 is used to prevent the outer support plate 1 from falling off, and then the support 11 is rebuilt on the outermost side of the tunnel to support the outer support plate 1, and then the first cylindrical rod 2 is driven away from the support plate 1. The tunnel excavated first is located at the outermost side. When the specified time comes and the inner wall of the tunnel is guaranteed to be in a solid state, the support 11 can be removed from the outermost side of the tunnel to the inside, and the support plate 1 is squeezed by driving the first cylindrical rod 2, and then the support 11 is moved into the tunnel to prevent the outer support plate 1 from falling off. At the same time, the support 11 can be pushed into the tunnel without assembling the support 11 inside the tunnel. Repeating this step can continuously excavate and support the inside of the tunnel, reducing the travel of carrying the support 11.

[0056] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. 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, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A reinforcement device for ultra-small clearance tunnel construction, comprising a plurality of support plates (1), each of which is used to support the inner wall of the tunnel, a bracket (11) is provided in the middle of the plurality of support plates (1), and the bracket (11) supports the support plates (1) through a plurality of support components, characterized in that: The support assembly comprises a first cylinder (12) arranged around a bracket (11); pressing assemblies are respectively arranged on both sides and an upper end of the bracket (11); the pressing assembly comprises a plurality of first cylindrical rods (2) arranged inside both sides and an upper end of the bracket (11); the first cylindrical rods (2) are used to press the support plate (1); a second cylindrical rod (22) is respectively arranged at one end of the first cylindrical rod (2); a fifth cylinder (23) is respectively fixedly connected to the inner sides of both sides and an upper end of the bracket (11); a third cylindrical rod (231) is slidably arranged inside one end of the fifth cylinder (23); a fourth cylinder (21) is respectively arranged at one end of the third cylindrical rod (231) away from the fifth cylinder (23); and an end of the second cylindrical rod (22) away from the first cylindrical rod (2) is capable of sliding inside the fourth cylinder (21).

2. The ultra-small clearance tunnel construction reinforcement device according to claim 1 is characterized in that: First slide blocks (15) are fixedly connected to both sides of the middle part of the lower end of the bracket (11), and third slide rails (151) are slidably arranged on the opposite side of the first slide block (15).

3. The reinforcement device for ultra-small clearance tunnel construction according to claim 2 is characterized in that: The middle part of the bracket (11) is square, and both sides of the upper end of the bracket (11) are beveled edges.

4. The reinforcement device for ultra-small clearance tunnel construction according to claim 1 is characterized in that: A third rectangular hole (25) is respectively provided in the middle of the first cylindrical rod (2), a second sliding block (251) is slidably provided in the middle of the third rectangular hole (25), and a circular hole (252) is provided in the middle of the second sliding block (251).

5. The reinforcement device for ultra-small clearance tunnel construction according to claim 1 is characterized in that: The end of the third cylindrical rod (231) away from the fifth cylinder (23) is rotatably connected to the fourth cylinder (21); the end of the second cylindrical rod (22) away from the fourth cylinder (21) is fixedly connected to the fixed block (221); the first cylindrical rod (2) is rotatable in the middle of the fixed block (221); and scale lines (24) are provided around the end of the first cylindrical rod (2) close to the fixed block (221).

6. The reinforcement device for ultra-small clearance tunnel construction according to claim 1, characterized in that: The support assembly further comprises a first cylinder (12), wherein a rotating block (121) is rotatably provided at one end of the first cylinder (12) away from the bracket (11), a screw rod (122) is threadedly connected to the middle of the rotating block (121), and the screw rod (122) is capable of sliding inside the first cylinder (12), a rectangular groove (1221) is provided on one side of the screw rod (122), and a limit block is provided inside the first cylinder (12), and the limit block is capable of sliding in the rectangular groove (1221).

7. The reinforcement device for ultra-small clearance tunnel construction according to claim 6, characterized in that: One end of the screw rod (122) away from the first cylinder (12) is fixedly connected to a pressing plate (124) via a first spring (123).

8. The reinforcement device for ultra-small clearance tunnel construction according to claim 1, characterized in that: The bracket (11) is provided with a second rectangular hole (112) on both sides, and the bracket (11) is provided with a first rectangular hole (111) on both sides obliquely above the bracket (11). A casting assembly is provided in the middle of the first rectangular hole (111) and the second rectangular hole (112). The casting assembly includes a second cylinder (14) provided in the middle of the first rectangular hole (111) and the second rectangular hole (112). The second cylinder (14) is used to support a casting pipe.

9. The reinforcement device for ultra-small clearance tunnel construction according to claim 8, characterized in that: A sliding assembly is provided on one side of the first rectangular hole (111) and the second rectangular hole (112), respectively. The sliding assembly comprises first slide rails (13) respectively fixed on both sides of the first rectangular hole (111) and the second rectangular hole (112), and a second slide rail (131) is slidably provided on the two first slide rails (13), and the second cylinder (14) can slide on the corresponding second slide rails (131).

10. The ultra-small clearance tunnel construction reinforcement device according to claim 9, characterized in that: A third cylinder (142) is slidably arranged on the outside of the second cylinder (14), and a first ring (141) is slidably arranged on the outside of the third cylinder (142). The first ring (141) can slide on the corresponding second slide rail (131), and the first ring (141) is fixedly connected to the third cylinder (142) via a second spring (143) on all sides.

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