Temporary hydraulic supporting structure for roadway

Abstract

The utility model relates to the technical field of roadway construction, and particularly discloses a temporary hydraulic supporting structure for roadways, which comprises two bases arranged side by side, two ends of each base are respectively provided with a hydraulic ejector rod, mounting ends of the hydraulic ejector rods are fixedly connected to the upper ends of the bases, output ends of the hydraulic ejector rods are provided with supporting plate groups, and reinforcing plates are arranged above the bases. The hydraulic ejector rods are sleeved with the two ends of the reinforcing plate, a supporting assembly is arranged between the reinforcing plate and the base, baffle assemblies are arranged at the two ends of the reinforcing plate and arranged on the sides, away from the supporting assembly, of the hydraulic ejector rods, and elastic connecting pieces are arranged between the baffle assemblies and the reinforcing plate. The reinforcing plate is fixed to the upper portion of the base through the supporting assembly, secondary reinforcing can be conducted on the hydraulic ejector rod, and the stability of the whole supporting structure is enhanced. The baffle assembly is connected with the reinforcing plate through the elastic connecting piece, when the baffle assembly is impacted, the elastic connecting piece can elastically contract, the impact force borne by the baffle assembly is reduced, the hydraulic ejector rod is protected, and safety is better.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel construction, in particular to a temporary hydraulic support structure for a tunnel. Background Art

[0002] When tunneling in highly stressed and extremely broken rock, the tunnel is prone to spalling, roof collapse and severe shrinkage deformation, which affects normal production and brings potential safety hazards. In order to improve tunnel safety, construction workers will use tunnel support to keep the tunnel unobstructed and the surrounding rock stable. The basic purpose of tunnel support is to ease and reduce the movement of surrounding rock so that the tunnel section does not shrink excessively, and at the same time prevent the scattered and damaged surrounding rock from falling.

[0003] The Chinese patent application number CN201410453071.7 discloses a hydraulic support for tunnel support, including a top beam, a cross beam and a hydraulic support, wherein: there are multiple groups of cross beams, multiple groups of top beams, and multiple groups of hydraulic supports; each group of cross beams is located below each group of top beams; each group of hydraulic supports supports each group of cross beams below; multiple groups of cross beams and multiple groups of top beams are combined to form multiple groups of movable mechanisms connected to each other. The tunnel support hydraulic support can be adjusted and moved according to the actual needs of excavation and mining, and has the advantage of high flexibility. The top beam is supported by a hydraulic support, which is exposed to the outside. When erecting, the hydraulic support is easy to collide with the external frame. Since the plunger structure has good matching requirements for each component, when the hydraulic support is hit by an external object, even if the external structure of the support is not obviously damaged, its internal components such as the oil cylinder may be damaged due to the impact, which will lead to a decrease in the bearing capacity of the support. Utility Model Content

[0004] In view of the above problems, the utility model proposes a temporary hydraulic support structure for the tunnel, which is used to solve the problem that the existing support structure is prone to collision with external frames during erection, and the internal components of the pillars may be damaged due to the impact, thereby resulting in the shortcomings of the bearing capacity of the pillars.

[0005] To achieve the purpose of the utility model, the utility model is implemented by the following technical solutions: a temporary hydraulic support structure for a tunnel, comprising two bases arranged side by side, each of the two ends of the base is provided with a hydraulic push rod, the installation end of the hydraulic push rod is fixedly connected to the upper end of the base, and the output end of the hydraulic push rod is provided with a support plate group;

[0006] A reinforcement plate is provided above the base, two ends of the reinforcement plate are sleeved on the outside of the hydraulic push rod, the reinforcement plate is fixedly connected to the hydraulic push rod, and a support component is provided between the reinforcement plate and the base;

[0007] Baffle assemblies are arranged at both ends of the reinforcement plate. The baffle assemblies are arranged on a side of the hydraulic push rod away from the supporting assembly. An elastic connecting piece is arranged between the baffle assembly and the reinforcement plate.

[0008] A further improvement is that the baffle assembly includes a soft sleeve and a baffle, the soft sleeve is wrapped around a side of the baffle away from the reinforcement plate, the soft sleeve is fixedly connected to the baffle, and the baffle is perpendicular to the reinforcement plate.

[0009] Further improvements are: the elastic connecting part includes a limiting rod, a spring, a positioning ring and an anti-slip ring, the positioning ring is fixed at both ends of the reinforcement plate, one end of the limiting rod is fixedly connected to the baffle, the other end of the limiting rod passes through the positioning ring and is slidably connected to the positioning ring, the anti-slip ring is fixedly connected to the end of the baffle assembly away from the baffle, the diameter of the anti-slip ring is larger than the aperture of the positioning ring, the spring is sleeved on the outside of the limiting rod, and the two ends of the spring are respectively fixedly connected to the baffle and the positioning ring.

[0010] A further improvement is that the support assembly includes a support seat, the upper end of the support seat is fixedly connected to the lower end of the reinforcement plate, the lower end of the support seat is fixedly connected to the upper end of the base, and reinforcing ribs are provided at the connection between the support seat, the base and the reinforcement plate.

[0011] A further improvement is that triangular ribs are provided on both sides of the support seat, the triangular ribs are fixedly connected to the upper end of the base, and the triangular ribs are fixedly connected to the support seat.

[0012] Further improvements are: the gear transmission mechanism includes a first bevel gear and a second bevel gear, the first bevel gear is fixedly connected to the output end of the motor, one end of the second bevel gear is meshed with the first bevel gear, the other end of the second bevel gear is fixedly connected to the turntable, the axis of the second bevel gear coincides with the axis of the turntable; the support plate group includes a top block and a support plate, the top block is fixedly connected to the output end of the hydraulic push rod, the two ends of the support plate are fixedly connected to the upper end surface of the top block, and the two ends of the support plate are equipped with multiple fixing bolts, the fixing bolts pass through the support plate and are threadedly connected to the bolt holes opened at the upper end of the top block.

[0013] A further improvement is that a sliding seat is provided at the lower end of the base, the sliding seat is fixedly connected to the base, and a track groove is provided at the lower end of the sliding seat.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] The reinforcement plate is fixed on the top of the base through the support assembly, which can provide secondary reinforcement for the hydraulic jack and enhance the stability of the entire support structure. The baffle assembly is connected to the reinforcement plate through an elastic connector. When the baffle assembly is impacted, the elastic connector will shrink elastically to reduce the impact force on the baffle assembly, protect the hydraulic jack, and provide better safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 It is a structural diagram of the base in the utility model.

[0018] Figure 2 It is a structural diagram of the reinforcement plate in the utility model.

[0019] Figure 3 It is a structural diagram of the baffle in the utility model.

[0020] Among them: 1. Base; 2. Hydraulic push rod; 3. Push block; 4. Support plate; 5. Reinforcement plate; 6. Support seat; 7. Triangular rib; 8. Baffle assembly; 81. Soft cover; 82. Baffle; 9. Limit rod; 10. Positioning ring; 11. Anti-slip ring; 12. Spring; 13. Reinforcement rib; 14. Sliding seat; 15. Fixing bolt. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0022] according to Figure 1 , 2 As shown in , 3, in this embodiment, a temporary hydraulic support structure for a tunnel is proposed, comprising two bases 1 arranged side by side, each end of the base 1 is provided with a hydraulic push rod 2, the mounting end of the hydraulic push rod 2 is fixedly connected to the upper end of the base 1, and the output end of the hydraulic push rod 2 is provided with a support plate group;

[0023] The support structure is moved into the tunnel that needs temporary support. The two hydraulic jacks 2 at the upper end of the base 1 will push the support plate group, which will be pushed up to contact the surrounding rock at the top of the tunnel, so that the surrounding rock and the support structure can jointly bear the pressure of the upper rock layer, strengthen the bearing capacity of the surrounding rock, and improve the overall stability of the tunnel.

[0024] A reinforcing plate 5 is provided above the base 1, and both ends of the reinforcing plate 5 are sleeved on the outside of the hydraulic push rod 2. The reinforcing plate 5 is fixedly connected to the hydraulic push rod 2, and a supporting component is provided between the reinforcing plate 5 and the base 1;

[0025] The reinforcement plate 5 is fixed above the base 1 through a supporting assembly, and both ends of the reinforcement plate 5 are fixed to the mounting ends of the hydraulic jack 2. By performing secondary reinforcement on the hydraulic jack 2, the burden on the connection between the base 1 and the hydraulic jack 2 is reduced, thereby enhancing the stability of the entire support structure.

[0026] Baffle assemblies 8 are provided at both ends of the reinforcing plate 5 . The baffle assembly 8 is placed on a side of the hydraulic jack 2 away from the supporting assembly. An elastic connecting piece is provided between the baffle assembly 8 and the reinforcing plate 5 .

[0027] The baffle assembly 8 is connected to the reinforcing plate 5 via an elastic connector. When the baffle assembly 8 is impacted, the elastic connector will elastically contract to reduce the impact force on the baffle assembly 8 and protect the hydraulic jack 2.

[0028] Regarding baffle assembly 8:

[0029] The baffle assembly 8 includes a soft cover 81 and a baffle 82 . The soft cover 81 is wrapped around a side of the baffle 82 away from the reinforcing plate 5 . The soft cover 81 is fixedly connected to the baffle 82 . The baffle 82 is perpendicular to the reinforcing plate 5 .

[0030] The side of the baffle plate 82 that receives impact is wrapped with a soft cover 81. The advantage of providing the soft cover 81 is that the soft cover 81 can reduce the damage to the baffle plate 82 caused by external objects, protect the objects that collide with the baffle plate 82, and improve the safety of traveling in the tunnel.

[0031] For the specific structure of the elastic connector, please refer to the following description:

[0032] The elastic connector includes a limit rod 9, a spring 12, a positioning ring 10 and an anti-slip ring 11. The positioning ring 10 is fixed at both ends of the reinforcing plate 5. One end of the limit rod 9 is fixedly connected to the baffle 82. The other end of the limit rod 9 passes through the positioning ring 10 and is slidably connected to the positioning ring 10. The anti-slip ring 11 is fixedly connected to the end of the baffle assembly 8 away from the baffle 82. The diameter of the anti-slip ring 11 is larger than the aperture of the positioning ring 10. The spring 12 is sleeved on the outside of the limit rod 9. The two ends of the spring 12 are fixedly connected to the baffle 82 and the positioning ring 10. Among them, the anti-slip ring 11 plays a role of limiting and is used to prevent separation from the positioning ring 10.

[0033] The working principle of the elastic connector is:

[0034] When the baffle 82 is impacted by external force, the baffle 82 pushes the baffle assembly 8 to move closer to the reinforcement plate 5, the limit rod 9 slides along the positioning ring 10, and the spring 12 between the positioning ring 10 and the baffle 82 contracts. When the force acting on the baffle 82 disappears, the spring 12 pushes the limit rod 9 and the baffle 82 to return to their original position. The contraction of the spring 12 and the friction between the limit rod 9 and the positioning ring 10 absorb the impact on the baffle 82 and protect the hydraulic push rod 2.

[0035] About the support components:

[0036] The support assembly includes a support seat 6, the upper end of the support seat 6 is fixedly connected to the lower end of the reinforcement plate 5, the lower end of the support seat 6 is fixedly connected to the upper end of the base 1, and a reinforcing rib 13 is provided at the connection between the support seat 6, the base 1 and the reinforcement plate 5. The support seat 6 is fixed to the reinforcement plate 5 and the base 1 by welding or bolting, and the reinforcing rib 13 is provided at the connection between the support seat 6 and the base 1, and at the connection between the reinforcement plate 5 and the support seat 6, which can effectively enhance the structural strength of the connection between the support seat 6, the reinforcement plate 5 and the base 1.

[0037] In order to improve the impact resistance of the side of the support seat 6, in the preferred solution, triangular ribs 7 are provided on both sides of the support seat 6, the triangular ribs 7 are fixedly connected to the upper end of the base 1, and the triangular ribs 7 are fixedly connected to the support seat 6. The triangular ribs 7 are provided at the connection between the support seat 6 and the base 1, and are used to reinforce the structure of the support seat 6 from the side of the support seat 6.

[0038] About the support plate group:

[0039] The support plate group includes a top block 3 and a support plate 4. The top block 3 is fixedly connected to the output end of the hydraulic push rod 2. Both ends of the support plate 4 are fixedly connected to the upper end surface of the top block 3. Both ends of the support plate 4 are equipped with multiple fixing bolts 15. The fixing bolts 15 pass through the support plate 4 and are threadedly connected to the bolt holes opened at the upper end of the top block 3. The top block 3 is fixed to both ends of the support plate 4. When the hydraulic push rod 2 pushes the top block 3 to rise, the support plate 4 will contact the top of the tunnel. The contact area between the support plate 4 and the surrounding rock is large, and the force is more evenly applied.

[0040] In a better embodiment, a sliding seat 14 is provided at the lower end of the base 1, the sliding seat 14 is fixedly connected to the base 1, and a track groove is provided at the lower end of the sliding seat 14. Through the sliding seat 14, the base 1 can move along the track in the lane, which is convenient for the staff to transfer the support structure.

[0041] How this application works:

[0042] The support structure is moved into the tunnel that needs temporary support. The two hydraulic jacks 2 at the upper end of the base 1 will push the support plate group, which will be pushed up to contact the surrounding rock at the top of the tunnel, thereby strengthening the bearing capacity of the surrounding rock, allowing the surrounding rock and the support structure to jointly bear the pressure of the upper rock layer, thereby improving the overall stability of the tunnel.

[0043] The reinforcement plate 5 is fixed above the base 1 through a support assembly, and both ends of the reinforcement plate 5 are fixed to the mounting ends of the hydraulic push rod 2. By performing secondary reinforcement on the hydraulic push rod 2, the burden on the connection between the base 1 and the hydraulic push rod 2 is reduced.

[0044] The baffle assembly 8 is connected to the reinforcing plate 5 via an elastic connector. When the baffle assembly 8 is impacted, the elastic connector will elastically contract to reduce the impact force on the baffle assembly 8 and protect the hydraulic jack 2.

[0045] In the description of the present application, it should be noted that the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0046] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A temporary hydraulic support structure for a tunnel, comprising two bases (1) arranged side by side, each end of the base (1) being provided with a hydraulic push rod (2), the mounting end of the hydraulic push rod (2) being fixedly connected to the upper end of the base (1), and the output end of the hydraulic push rod (2) being provided with a support plate group, characterized in that: A reinforcing plate (5) is provided above the base (1), two ends of the reinforcing plate (5) are sleeved on the outside of the hydraulic push rod (2), the reinforcing plate (5) is fixedly connected to the hydraulic push rod (2), and a supporting assembly is provided between the reinforcing plate (5) and the base (1); Baffle assemblies (8) are provided at both ends of the reinforcing plate (5), the baffle assemblies (8) are placed on a side of the hydraulic jack (2) away from the supporting assembly, and an elastic connecting piece is provided between the baffle assemblies (8) and the reinforcing plate (5).

2. A temporary hydraulic support structure for a tunnel according to claim 1, characterized in that: The baffle assembly (8) comprises a soft cover (81) and a baffle (82), wherein the soft cover (81) is wrapped around a side of the baffle (82) away from the reinforcing plate (5), the soft cover (81) is fixedly connected to the baffle (82), and the baffle (82) is perpendicular to the reinforcing plate (5).

3. A temporary hydraulic support structure for a tunnel according to claim 2, characterized in that: The elastic connecting member comprises a limiting rod (9), a spring (12), a positioning ring (10) and an anti-slip ring (11); the positioning ring (10) is fixed to the two ends of the reinforcing plate (5); one end of the limiting rod (9) is fixedly connected to the baffle (82); the other end of the limiting rod (9) passes through the positioning ring (10) and is slidably connected to the positioning ring (10); the anti-slip ring (11) is fixedly connected to the end of the baffle assembly (8) away from the baffle (82); the diameter of the anti-slip ring (11) is larger than the aperture of the positioning ring (10); the spring (12) is sleeved on the outside of the limiting rod (9); and the two ends of the spring (12) are fixedly connected to the baffle (82) and the positioning ring (10) respectively.

4. A temporary hydraulic support structure for a tunnel according to claim 1, characterized in that: The support assembly comprises a support seat (6), the upper end of the support seat (6) is fixedly connected to the lower end of the reinforcement plate (5), the lower end of the support seat (6) is fixedly connected to the upper end of the base (1), and reinforcing ribs (13) are provided at the connection between the support seat (6), the base (1) and the reinforcement plate (5).

5. A temporary hydraulic support structure for a tunnel according to claim 4, characterized in that: Triangular ribs (7) are provided on both sides of the support seat (6); the triangular ribs (7) are fixedly connected to the upper end of the base (1); and the triangular ribs (7) are fixedly connected to the support seat (6).

6. A temporary hydraulic support structure for a tunnel according to claim 1, characterized in that: The support plate group comprises a top block (3) and a support plate (4); the top block (3) is fixedly connected to the output end of the hydraulic push rod (2); the two ends of the support plate (4) are fixedly connected to the upper end surface of the top block (3); the two ends of the support plate (4) are equipped with a plurality of fixing bolts (15); the fixing bolts (15) pass through the support plate (4) and are threadedly connected to bolt holes opened at the upper end of the top block (3).

7. A temporary hydraulic support structure for a tunnel according to claim 1, characterized in that: A sliding seat (14) is provided at the lower end of the base (1), the sliding seat (14) is fixedly connected to the base (1), and a track groove is provided at the lower end of the sliding seat (14).

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