Tunnel top supporting and sinking controlling device

Abstract

The utility model provides a tunnel supporting sinking control device which comprises a jack, a base is movably installed at the bottom of the jack, a sleeve located on the outer side of the jack is detachably connected to the top wall of the base, a push rod is placed at the jacking end of the jack, a connecting piece is detachably connected to the upper portion of the outer wall of the sleeve, and the bottom end of the connecting piece is open. The sleeve and the connecting piece are arranged, the jack, the push rod, the three-head cambered surface supporting column and the supporting piece are placed in the sleeve and the connecting piece, the sleeve and the connecting piece form a protective sleeve, the effect of protecting a supporting component is achieved, and the supporting component is fixed through the triangular fixing plate and the anchor rod installed on the chassis. According to the tunnel top supporting and sinking controlling device, the bottom of the tunnel top supporting and sinking controlling device is supported by arranging the supporting plate and matching with the ball head supporting rod and the ground grabbing claw disc, the stability of the tunnel top supporting and sinking controlling device in use is guaranteed, and the tunnel top wall is better supported by arranging the cambered surface supporting plate.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel top support and sinking control, in particular to a tunnel top support and sinking control device. Background Art

[0002] Tunnels are engineering structures buried in the ground and are a form of human use of underground space. Tunnels can be divided into traffic tunnels, hydraulic tunnels, municipal tunnels, mining tunnels, and military tunnels. Tunnels are often accompanied by tunnel settlement problems during excavation. Tunnel settlement is mainly caused by rock characteristics, tunnel burial depth, excavation methods, initial support, excavation progress, etc. After tunnel excavation, in order to control the appropriate release and deformation of surrounding rock stress, increase structural safety and facilitate construction, a structural layer with less rigidity and part of the permanent bearing structure is promptly built after tunnel excavation, which is called initial support.

[0003] According to Chinese utility model patent CN217681804U, a tunnel top support and sinking control device is disclosed, such as Figure 8 As shown, a fourth connecting piece is provided at the connection between the top supporting and sinking control device and the bottom of the tunnel, a lower steel pipe is detachably installed on the upper side of the fourth connecting piece, a third connecting piece is detachably installed on the top of the lower steel pipe, a hydraulic jack is detachably installed on the top wall of the third connecting piece, a second connecting piece is detachably installed on the lifting end of the hydraulic jack, an upper steel pipe is detachably installed on the top wall of the second connecting piece, a first connecting piece is detachably installed on the top of the upper steel pipe, a longitudinal beam is detachably installed on the top wall of the first connecting piece, the longitudinal beam, the upper steel pipe, the hydraulic jack and the lower steel pipe are detachably connected together, thereby realizing rapid disassembly of the tunnel top supporting and sinking control device and rapid cycle construction.

[0004] However, the supporting surface at the top of this device and the contact surface with the tunnel are relatively small, resulting in a greater pressure on the supporting surface and the contact surface during use, which may cause tiny cracks on the top wall of the tunnel, which is not conducive to the long-term protection of the tunnel. In addition, this device has no protective structure and the protection is weak. Since there are many construction tools in the tunnel, displacement may occur in the event of an impact.

[0005] Therefore, the utility model proposes a tunnel top support settlement device with a large contact surface and stable protection. Utility Model Content

[0006] In view of this, the purpose of the utility model is to provide a tunnel support top settlement device with a large contact surface and stable protection.

[0007] The technical solution of the utility model to solve the above technical problems is as follows:

[0008] A tunnel top support and sinking control device comprises a jack, a base is movably installed at the bottom of the jack, the top wall of the base is detachably connected to a sleeve located outside the jack, a push rod is placed at the lifting end of the jack, a connecting piece is detachably connected to the upper part of the outer wall of the sleeve, the bottom end of the connecting piece is open, and a supporting piece with one end penetrating through and extending to the inside of a supporting block is arranged on the outside of the connecting piece.

[0009] On the basis of the above technical solution, the present invention can also be improved as follows.

[0010] Preferably, the base includes a support plate, the bottom end of the sleeve is detachably connected to the support plate, the bottom wall of the support plate is fixedly installed with a support column, the bottom end of the support column is fixedly installed with a chassis, three triangular fixing plates are fixedly installed on the opposite sides of the support plate and the chassis, the sides of the triangular fixing plates close to the support column are fixedly connected to the outer wall of the support column, three annular through holes equidistantly distributed are opened on the chassis, anchor rods are placed in the through holes, a ball head support rod is rotatably installed on the bottom wall of the support plate, and a gripping claw plate is rotatably installed on the other end of the ball head support rod.

[0011] Preferably, the rocker of the jack penetrates and extends to the outer wall of the sleeve.

[0012] Preferably, the support member includes a plurality of support rods, and three groups of support rods with one end passing through and extending into the interior of the support block are movably installed on the outer side of the connecting member. A curved bottom plate is fixedly installed on the bottom end of the support rod, and the outer top wall of the curved bottom plate is in contact with the curved surface of the top wall of the inner cavity of the connecting member. The top end of the support rod is arranged in an inverted cone shape, and a curved support plate is fixedly installed on the top end of the support rod.

[0013] Preferably, a three-head arc-surface support column is fixedly mounted on the top end of the push rod, and the arc surfaces of the top ends of the three support heads of the three-head arc-surface support column are all in contact with the arc surfaces of the bottom walls of the corresponding arc-surface bottom plates.

[0014] Beneficial Effects

[0015] Compared with the prior art, the technical solution of this application has the following beneficial technical effects:

[0016] 1. The utility model arranges a sleeve and a connector to place a jack, a push rod, a three-head arc-surface support column, and a support member inside the sleeve and the connector, and a protective cover is formed by the sleeve and the connector to protect the support member.

[0017] 2. The utility model provides bottom support for the tunnel top support and sinking control device by arranging triangular fixing plates installed on the chassis and the support plate, and ground-inserted steel nails installed on the chassis, and cooperates with the use of ball head support rods and gripping claw plates installed on the bottom wall of the support plate, thereby ensuring that the tunnel top support and sinking control device is stable when in use and more stable when hit.

[0018] 3. The utility model increases the contact area with the tunnel top wall by setting a curved support plate, reduces the pressure on the contact surface of the tunnel top wall, and avoids the appearance of tiny cracks on the tunnel top wall. At the same time, the curved support plate can fit the tunnel top wall and better support the tunnel top wall. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a cross-sectional view of a specific implementation method of the tunnel top support and sinking control device of the utility model;

[0020] Figure 2 For this utility model Figure 1 Enlarged view of point A in the middle;

[0021] Figure 3 For this utility model Figure 1 Enlarged view of point B in the middle;

[0022] Figure 4 A cross-sectional view of a specific embodiment of a connector, a support member and a three-head support block when in use;

[0023] Figure 5 It is a front view of the utility model;

[0024] Figure 6 A top view of the specific connection method of the chassis, support column and triangular fixing plate;

[0025] Figure 7 It is a top view of the utility model;

[0026] Figure 8 It is a cross-sectional view of a specific implementation method of a tunnel top support and sinking control device in the prior art;

[0027] In the figure: 1. jack; 2. base; 21. support plate; 22. support column; 23. chassis; 24. triangular fixing plate; 25. through hole; 26. anchor rod; 27. ball head support rod; 28. gripper plate; 3. sleeve; 4. push rod; 5. connector; 6. support member; 61. support rod; 62. arc bottom plate; 63. arc support plate; 7. three-head arc support column; DETAILED DESCRIPTION

[0028] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the utility model for which protection is sought, but merely represents the selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model.

[0029] In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0030] refer to Figure 1-7 The present embodiment provides a specific implementation method for a tunnel top support and sinking control device, including a jack 1, a base 2 is movably installed at the bottom of the jack 1, the top wall of the base 2 is detachably connected to a sleeve 3 located on the outside of the jack 1, a push rod 4 is placed at the lifting end of the jack 1, and a connecting piece 5 is detachably connected to the upper part of the outer wall of the sleeve 3. The sleeve 3 and the connecting piece 5 are threadedly connected, and the bottom end of the connecting piece 5 is open. A supporting piece 6 with one end penetrating through and extending to the inside of the supporting block is arranged on the outside of the connecting piece 5, and the supporting block refers to a supporting structure used to contact the tunnel surface.

[0031] Through the above arrangement, the jack 1 of the utility model can transmit the supporting force to the supporting member 6 to realize the supporting function of the tunnel top support and sinking control device. Both ends of the sleeve 3 are detachably connected, and the main components of the device can be disassembled and replaced.

[0032] Reference Figure 3 and Figure 5Further, the base 2 includes a support plate 21, the bottom end of the sleeve 3 is bolted with the support plate 21, the bottom wall of the support plate 21 is fixedly installed with a support column 22, the bottom end of the support column 22 is fixedly installed with a chassis 23, and three triangular fixing plates 24 are fixedly installed on the opposite side of the support plate 21 and the chassis 23, and the side of the triangular fixing plates 24 close to the support column 22 is fixedly connected to the outer wall of the support column 22, and three annular through holes 25 with equal distances are opened on the chassis 23, and anchor rods 26 are placed in the through holes 25. A ball head support rod 27 is rotatably installed on the bottom wall of the support plate 21, and a gripping claw plate 28 is rotatably installed at the ball head of the ball head support rod 27;

[0033] Through the above-mentioned structural setting, by installing the triangular fixing plate 24 on the chassis 23 and the support plate 21, and the anchor rod 26 installed on the chassis 23, in conjunction with the use of the ball head support rod 27 and the gripping claw plate 28 installed on the bottom wall of the support plate 21, the bottom support of the tunnel top support and sinking control device is provided to ensure the stability of the tunnel top support and sinking control device during use.

[0034] In one specific embodiment, the gripping claw plate 28 has a bottom end surface provided with a plurality of rake spikes that can extend into the soil or the ground to increase the firmness with the ground or the supporting equipment, and the middle of the top end surface of the gripping claw plate 28 is rotatably connected to the ball head of the ball head support rod 27.

[0035] Reference Figure 1 , as a specific embodiment of the utility model, the rocker of the jack 1 penetrates and extends to the outer wall of the sleeve 3;

[0036] With the above-mentioned structural arrangement, the main body of the jack 1 is located inside the sleeve 3 , and only the rocker arm extends to the outside of the sleeve 3 . The sleeve 3 protects the jack 1 without affecting the use of the jack 1 .

[0037] As a specific implementation of the utility model, refer to Figure 2 The support member 6 includes a plurality of support rods 61. A support rod 61 having one end penetrating and extending into the interior of the connection member 5 is movably installed on the outer side of the connection member 5. A curved bottom plate 62 is fixedly installed on the bottom end of the support rod 61. The outer top wall of the curved bottom plate 62 is in contact with the curved surface of the top wall of the inner cavity of the connection member 5. The top end of the support rod 61 is in an inverted cone shape. A curved support plate 63 is fixedly installed on the top end of the support rod 61.

[0038] Through the above-mentioned structural setting, the connecting member 5 can be a fan-shaped connecting member and a right-angle trapezoidal connecting member. When in use, the appropriate connecting member can be selected according to the needs. When not in use, the inverted cone head of the support rod 61 can fix the support rod 61 on the outer wall of the connecting member 5. When in use, the arc support plate 63 has a large contact area with the tunnel top wall, which can better support the tunnel top wall.

[0039] Reference Figure 2 , wherein a three-head arc-surface support column 7 is fixedly mounted on the top of the push rod 4, and the arc surfaces of the tops of the three support heads of the three-head arc-surface support column 7 are all in contact with the arc surfaces of the bottom walls of the corresponding arc-surface bottom plate 62;

[0040] Through the above-mentioned structural arrangement, when in use, the push rod 4 drives the three-headed arc surface support column 7 to rise, and the three support heads of the three-headed arc surface support column 7 push the arc surface bottom plate 62 to rise, and the support heads on both sides of the three-headed arc surface support column 7 first push the arc surface bottom plate 62 to rise, and the support head in the middle of the three-headed arc surface support column 7 pushes the arc surface bottom block 62 to rise. Since the arc surface bottom plates 62 on both sides rise obliquely, the arc surface bottom plates 62 on both sides and the arc surface bottom plate 62 in the middle have the same vertical rising height, and the arc surface bottom plate 62 can simultaneously fit the top wall of the inner cavity of the connecting piece 5. Through the cooperation of the three-headed arc surface support column 7 and the arc surface bottom plate 62, the arc surface support plate 63 can simultaneously support the top wall of the tunnel.

[0041] Specific use steps of this utility model:

[0042] Step 1: Assemble the tunnel top support and sinking control device;

[0043] Step 2: insert the anchor rod 26 into the tunnel ground through the through hole 25 until the bend of the anchor rod 27 contacts the chassis 23, rotate the ball head support rod 27 and insert the gripping claw plate 28 into the tunnel ground;

[0044] Step 3: Shake the rocker of the jack 1, the lifting end of the jack 1 pushes the push rod 4 to rise, the three-head arc support column 7 at the top of the push rod 4 contacts and pushes the arc bottom plate 62, the arc bottom plate 62 pushes the support rod 61 to rise, and the support rod 61 pushes the arc support plate 63 to rise to support the top of the tunnel;

[0045] Step 4: After the support is completed, the brake of the jack 1 is released, the support member 6 and the push rod 4 are lowered and reset, the ball head support rod 27 is rotated to make the gripping claw plate 28 separate from the ground, and the anchor rod 26 is pulled up;

[0046] Step 5: Dismantle the tunnel top support and sinking control device.

[0047] The above description is only the preferred implementation of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A tunnel top support and sinking control device, comprising a jack (1), characterized in that: A base (2) is movably mounted at the bottom of the jack (1); a sleeve (3) located outside the jack (1) is detachably connected to the top wall of the base (2); a push rod (4) is placed at the lifting end of the jack (1); a connecting piece (5) is detachably connected to the upper part of the outer wall of the sleeve (3); the bottom end of the connecting piece (5) is open; the top wall of the inner cavity of the connecting piece (5) is curved; three supporting pieces (6) are arranged on the outer side of the connecting piece (5), one end of which penetrates through and extends into the interior of the connecting piece (5); the other end of the supporting piece (6) contacts the inner side of the tunnel.

2. A tunnel top support and sinking control device according to claim 1, characterized in that: The base (2) comprises a support plate (21), the bottom end of the sleeve (3) is detachably connected to the support plate (21), the bottom wall of the support plate (21) is fixedly mounted with a support column (22), the bottom end of the support column (22) is fixedly mounted with a bottom plate (23), three triangular fixing plates (24) are fixedly mounted on opposite sides of the support plate (21) and the bottom plate (23), the side of the triangular fixing plate (24) close to the support column (22) is fixedly connected to the outer side of the support column (22), and the bottom plate (23) is provided with three annular through holes (25) distributed at equal intervals, and anchor rods (26) are placed in the through holes (25).

3. A tunnel top support and sinking control device according to claim 2, characterized in that: A ball head support rod (27) is rotatably mounted on the bottom wall of the support plate (21), and a ground gripping claw plate (28) is rotatably mounted on the other end of the ball head support rod (27).

4. A tunnel top support and sinking control device according to claim 1, characterized in that: The rocker of the jack (1) penetrates through and extends to the outer wall of the sleeve (3).

5. The tunnel top support and sinking control device according to claim 1, characterized in that: The support member (6) comprises a plurality of support rods (61), one end of which penetrates through and extends into the interior of the connecting member (5) and is movably mounted on the outer side of the connecting member (5), a curved bottom plate (62) is fixedly mounted on the bottom end of the support rod (61), the outer top wall of the curved bottom plate (62) is in contact with the curved surface of the top wall of the inner cavity of the connecting member (5), and a curved support plate (63) is fixedly mounted on the top end of the support rod (61).

6. A tunnel top support and sinking control device according to claim 5, characterized in that: The top end of the support rod (61) is arranged in an inverted cone shape.

7. The tunnel top support and sinking control device according to claim 1, characterized in that: A three-head arc-surface support column (7) is fixedly mounted on the top end of the push rod (4), and the arc surfaces of the top ends of the three support heads of the three-head arc-surface support column (7) are all in contact with the arc surfaces of the bottom walls of the corresponding arc-surface bottom plates (62).

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