Advanced support device for soft rock floor roadway

Abstract

The utility model discloses a forepoling device for a soft rock floor roadway, which comprises a supporting beam and supporting components, the supporting beam is arranged on the top surface of the roadway and used for supporting the top surface of the roadway, the two ends of the supporting beam are respectively provided with one supporting component, and each supporting component comprises a supporting arm, a supporting palm and a supporting piece. One end of the supporting arm is connected with the end of the supporting beam, the other end of the supporting arm is connected with the supporting palm, at least part of the supporting palm makes contact with the side wall of the roadway and is used for supporting the side wall of the roadway, one end of the supporting piece is connected with the supporting beam, and the other end of the supporting piece is connected with the other end of the supporting arm. The advance support device for the soft rock bottom plate roadway can reduce extrusion on a roadway bottom plate, and is simple in structure, convenient to use and convenient and fast to operate during installation.

Description

Technical Field

[0001] The utility model relates to the technical field of soft rock floor tunnel support, in particular to an advance support device for soft rock floor tunnels. Background Art

[0002] In my country's mining industry, there are many tunnels with soft rock floors. In the related technology, the advance support in the soft rock floor tunnel is ground-type, that is, it relies on the base to stand on the floor of the tunnel, and the support beam is supported on the top plate of the tunnel. The supporting force is provided by the hydraulic cylinder column between the support beam and the base. However, the ground-type advance support is heavy and large in size, which can easily crush the soft rock floor, causing the rock on the floor to become broken. Moreover, in most cases, the tunnel is humid and has water, and the soft rock floor usually encounters cementation, which will cause the base to sink into the floor or mud and be unable to move, seriously affecting the support effect. Utility Model Content

[0003] The utility model aims to solve one of the technical problems in the related art to at least a certain extent. To this end, the embodiment of the utility model proposes an advance support device for a soft rock floor tunnel, which can not only reduce the squeezing of the tunnel floor when supporting the tunnel, but also has a simple structure, is easy to use, and is easy to operate during installation.

[0004] The advance support device for a soft rock floor tunnel of the embodiment of the utility model comprises:

[0005] A support beam, the support beam being arranged on the top surface of the tunnel and used for supporting the top surface of the tunnel;

[0006] A support assembly, wherein each end of the support beam is provided with a support assembly, and the support assembly includes a support arm, a support palm and a support member, wherein one end of the support arm is connected to the end of the support beam, and the other end of the support arm is connected to the support palm, and at least a portion of the support palm is in contact with the side wall of the laneway for supporting the side wall of the laneway, and one end of the support member is connected to the support beam, and the other end of the support member is connected to the other end of the support arm.

[0007] The advance support device for soft rock floor tunnels of the utility model embodiment provides support force for the support beam by supporting the support palm on the side wall of the tunnel, so that the support beam supports the top surface of the tunnel, does not occupy the area of ​​the tunnel floor, saves tunnel space, and compared with the prior art, avoids the squeezing of the tunnel by traditional floor-type advance supports, reduces the impact of bottom rock crushing and cementation on the support, and the advance support device for soft rock floor tunnels of the utility model embodiment has a simple and light structure, a small overall size, and is easy to move flexibly.

[0008] In some embodiments, the side of the support leg adjacent to the side wall of the tunnel has a protrusion.

[0009] In some embodiments, the advance support device for soft rock floor tunnels also includes a first ear plate, which is arranged on the bottom surface of the support beam and extends downward, and one end of the support member is connected to the first ear plate.

[0010] In some embodiments, the first ear plate is located in the middle of the support beam in the length direction.

[0011] In some embodiments, connections between one end of the two support members and the first ear plate are symmetrically arranged with respect to a central axis of the first ear plate in the up-down direction.

[0012] In some embodiments, the support assembly further includes a second ear plate, wherein the second ear plate is disposed at the other end of the support arm, and the other end of the support member is connected to the second ear plate.

[0013] In some embodiments, an extension direction of the second ear plate is orthogonal to an extension direction of the support arm.

[0014] In some embodiments, the side of the supporting palm adjacent to the supporting arm includes a first side and a second side, one end of the first side is connected to one end of the side of the supporting palm adjacent to the side wall of the tunnel, the other end of the first side is connected to one end of the second side, the other end of the second side is connected to the other end of the side of the supporting palm adjacent to the side wall of the tunnel, and an angle is formed between the first side and the second side, and the angle is an obtuse angle.

[0015] In some embodiments, a dimension of the first side in the up-down direction is smaller than a dimension of the second side in the up-down direction.

[0016] In some embodiments, the connection between the other end of the supporting arm and the supporting palm is located at the connection between the first side surface and the second side surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of an advance support device for a soft rock floor tunnel according to an embodiment of the utility model.

[0018] Figure 2 It is a schematic diagram of the use of the advance support device for a soft rock floor tunnel according to an embodiment of the utility model.

[0019] Figure numerals: 1. support beam; 2. support assembly; 21. support arm; 22. support palm; 221. first side; 222. second side; 23. support member; 24. second ear plate; 241. second mounting hole; 3. anchor rod; 4. protrusion; 5. first ear plate; 51. first mounting hole; 6. tunnel. DETAILED DESCRIPTION

[0020] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but cannot be understood as limiting the present invention.

[0021] like Figure 1-2 As shown, the advance support device for soft rock floor tunnel of the utility model embodiment comprises a support beam 1 and a support assembly 2. The support beam 1 is arranged on the top surface of the tunnel 6 and extends along the width direction of the tunnel 6 (such as Figure 1 The first direction shown in the figure) is extended to support the top surface of the tunnel 6 and play a supporting role.

[0022] A support assembly 2 is provided at each end of the support beam 1. The support assembly 2 includes a support arm 21, a support palm 22 and a support member 23. One end of the support arm 21 (such as Figure 1 The upper end of the support arm 21 shown in FIG. 1 is rotatably connected to the end of the support beam 1, and the other end of the support arm 21 (as shown in FIG. Figure 1 The lower end of the support arm 21 shown in FIG. 1 is rotatably connected to the support palm 22, and at least a portion of the support palm 22 is in contact with the side wall of the lane 6 for supporting the side wall of the lane 6. The support member 23 (such as Figure 1 One end of the support member 23 (as shown in the figure) is rotatably connected to the support beam 1, and the other end of the support member 23 (as shown in the figure) is rotatably connected to the support beam 1. Figure 1 The lower end of the support member 23 shown in the figure is rotatably connected to the other end of the support arm 21, and the support member 23 is retractable. Specifically, the support member 23 is a hydraulic cylinder.

[0023] Specifically, the support arm 21 is connected to the support beam 1 and the support palm 22 by a pin hinge. The lower end of the support arm 21 extends downward and tilts in a direction away from the support beam 1. The support member 23 is supported between the support arm 21 and the support beam 1 to provide support force to the support arm 21 and the support beam 1. The length of the support member 23 is adjusted according to the width of the tunnel 6, and then the angle between the support beam 1 and the support arm 21 is adjusted to better adapt to the tunnel 6. The support palm 22 is rotatable relative to the lower end of the support arm 21, so that the support palm 22 can better fit the side wall of the tunnel 6 to support the side wall, thereby improving the applicability of the support device.

[0024] Specifically, the connection between the support arm 21 and the support beam 1 and the support palm 22 is not limited to a pin-shaft hinge, but can also be a hinge of other types, as long as the mechanism can achieve a rotational connection, it conforms to the design of the utility model. Similarly, the connection between the support member 23 and the support beam 1 and the support arm 21 is not limited to a pin-shaft hinge.

[0025] The advance support device for soft rock floor tunnels of the utility model embodiment transmits the force of the support member 23 to the side wall of the tunnel 6 through the support palm 22, so that the side wall of the tunnel 6 bears the supporting force of the support beam 1, so that when the support beam 1 supports the top surface of the tunnel 6, it does not occupy the area of ​​the tunnel 6 floor, saving the tunnel 6 space. Compared with the prior art, it avoids the squeezing of the tunnel 6 by the traditional ground-based advance support, reduces the impact of the bottom rock crushing and cementation on the support, and the advance support device for soft rock floor tunnels of the utility model embodiment has a simple and light structure, a small overall volume, and is easy to move flexibly.

[0026] In some embodiments, the support beam 1 has a through hole (not shown), and an anchor rod 3 is inserted into the through hole. The anchor rod 3 passes through the through hole and the top surface of the tunnel 6 to fix the support beam 1 on the top surface of the tunnel 6, thereby further improving the stability of the support beam 1 installed on the top surface of the tunnel 6.

[0027] In some embodiments, the top surface of the tunnel 6 is provided with an anchor rod 3, and the support beam 1 passes through the anchor rod 3 and is connected to the anchor rod 3 to further improve the stability of the support beam 1 installed on the top surface of the tunnel 6. The support beam 1 and the anchor rod 3 are connected by bolts, and can also be connected by buckles, etc., so that the connection between the support beam 1 and the anchor rod 3 is easy.

[0028] In some embodiments, the side of the support palm 22 adjacent to the side wall of the tunnel 6 has a protrusion 4, which increases the friction between the support palm 22 and the side wall of the tunnel 6, so as to bear the gravity of the support device and the reaction force of the support beam 1 when supporting the top plate of the tunnel 6 through friction, thereby ensuring the stability of the support device during use.

[0029] In some embodiments, the side of the support palm 22 adjacent to the side wall of the lane 6 may be made of other structures or materials with greater friction, for example, the side of the support palm 22 adjacent to the side wall of the lane 6 may be made into corrugated patterns.

[0030] In some embodiments, the advance support device for soft rock floor tunnels also includes a first ear plate 5, which is located in the middle position of the support beam 1 in the length direction, so that the two support components 2 connected to the support beam 1 are symmetrically arranged about the middle position of the length direction of the support beam 1, ensuring that the two support components 2 are evenly stressed, thereby ensuring the stability of the support device during use.

[0031] The first ear plate 5 is arranged on the bottom surface of the support beam 1 and extends downward, and one end of the support member 23 is rotatably connected to the first ear plate 5, ensuring the freedom of relative movement between one end of the support member 23 and the support beam 1. Specifically, the upper end of the support member 23 is rotatably connected to the first ear plate 5, so that the supporting force is transmitted to the support beam 1 through the first ear plate 5, so that the support beam 1 supports the top surface of the lane 6. The provision of the first ear plate 5 increases the contact area between the upper end of the support member 23 and the support beam 1, so that the support member 23 is installed more firmly.

[0032] In some embodiments, the connection between one end of the two support members 23 and the first ear plate 5 is symmetrically arranged about the central axis of the first ear plate 5 in the vertical direction. Specifically. The first ear plate 5 has two first mounting holes 51, and the two first mounting holes 51 are symmetrically arranged about the central axis of the first ear plate 5 in the vertical direction. The upper end of the support member 23 is rotatably mounted in the first mounting hole 51, so that the two support members 23 are symmetrically arranged about the central axis of the first ear plate 5 in the vertical direction, thereby ensuring that the two support members 23 can jointly support the support beam 1, and the two support members 23 are evenly stressed, ensuring the stability of the support device when in use and the stability of the support device in supporting the tunnel 6.

[0033] In some embodiments, the support assembly 2 further includes a second ear plate 24, which is disposed at the other end of the support arm 21, and the other end of the support member 23 is rotatably connected to the second ear plate 24. The extension direction of the second ear plate 24 is orthogonal to the extension direction of the support arm 21. Specifically, the second ear plate 24 has a second mounting hole 241, and the lower end of the support member 23 is rotatably connected to the lower end of the support arm 21 through the second mounting hole 241, thereby ensuring the freedom of relative movement between the lower end of the support member 23 and the support arm 21.

[0034] In some embodiments, the side of the support palm 22 adjacent to the support arm 21 includes a first side 221 and a second side 222. One end of the first side 221 (eg Figure 1 The upper end of the first side surface 221 shown in FIG. 2 is connected to one end of the side surface of the support palm 22 adjacent to the side wall of the lane 6, and the other end of the first side surface 221 (as shown in FIG. Figure 1 The lower end of the first side surface 221 shown in FIG. 221 and one end of the second side surface 222 (as shown in FIG. Figure 1 The upper end of the second side surface 222 shown in FIG. 2 is connected to the other end of the second side surface 222 (as shown in FIG. Figure 1 The lower end of the second side surface 222 shown in the figure is connected to the other end of the side surface of the support palm 22 adjacent to the side wall of the lane 6, and an angle is formed between the first side surface 221 and the second side surface 222, which is an obtuse angle. The connection between the other end of the support arm 21 and the support palm 22 is located at the connection between the first side surface 221 and the second side surface 222.

[0035] Specifically, the cross-sectional area of ​​the support palm 22 is generally triangular, so that the structure of the support palm 22 is stable and not easy to deform. The size of the first side surface 221 in the vertical direction is smaller than the size of the second side surface 222 in the vertical direction, so that when the support arm 21 of the support assembly installation applies downward pressure to the support palm 22 and tilts toward the side wall of the tunnel 6, the support palm 22 is not easy to rotate relative to the support arm 21. Moreover, when the support arm 21 applies downward pressure to the side wall of the tunnel 6 and translates along the direction of the force to the side of the support palm 22 adjacent to the side wall of the tunnel 6, it is exactly located at the geometric center position of the side of the support palm 22 adjacent to the side wall of the tunnel 6, so that the side of the support palm 22 adjacent to the side wall of the tunnel 6 is evenly stressed, ensuring the stability of the support device during installation.

[0036] The advance support method for a soft rock floor tunnel of the embodiment of the utility model includes fixing the support beam 1 on the top surface of the tunnel 6. The length of the support member 23 is adjusted to adjust the angle between the support arm 21 and the support beam 1 and the support palm 22 so that the support palm 22 is in close contact with the side of the tunnel 6.

[0037] Specifically, the support beam 1 is first fixedly installed on the top surface of the tunnel 6 by the anchor rod 3 and extends in the first direction. The length of the support member 23 is adjusted according to the width of the tunnel 6 in the first direction, thereby adjusting the angle between the support arm 21 and the support beam 1, so that the support palm 22 can contact the side wall of the tunnel 6. The support palm 22 can rotate relative to the support arm 21, so that the support palm 22 can better contact the side wall of the tunnel 6, so as to increase the contact area between the support palm 22 and the side wall of the tunnel 6, so that the support device can support the tunnel 6 more stably.

[0038] The advance support method for soft rock floor tunnels of the utility model embodiment is convenient when installing the support device and flexible when moving it later, which reduces the construction difficulty of workers, shortens the working hours of workers, reduces investment costs, and reduces waste of resources.

[0039] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like 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 invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0040] In addition, the terms "first" and "second" are used for descriptive purposes only and should not 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 at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0041] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0043] In the present utility model, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0044] Although the above embodiments have been shown and described, it is to be understood that the above embodiments are illustrative and cannot be construed as limitations on the present invention. Changes, modifications, substitutions and variations of the above embodiments by those of ordinary skill in the art are all within the scope of protection of the present invention.

Claims

1. An advance support device for soft rock floor tunnel, characterized in that: include: A support beam (1), the support beam (1) being arranged on the top surface of the tunnel (6) and being used to support the top surface of the tunnel (6); A support assembly (2), wherein each of the two ends of the support beam (1) is provided with a support assembly (2), the support assembly (2) comprising a support arm (21), a support palm (22) and a support member (23), one end of the support arm (21) being connected to the end of the support beam (1), the other end of the support arm (21) being connected to the support palm (22), at least a portion of the support palm (22) being in contact with the side wall of the tunnel (6) for supporting the side wall of the tunnel (6), one end of the support member (23) being connected to the support beam (1), the other end of the support member (23) being connected to the other end of the support arm (21).

2. The advance support device for soft rock floor tunnel according to claim 1 is characterized in that: The side surface of the supporting palm (22) adjacent to the side wall of the tunnel (6) has a protrusion (4).

3. The advance support device for soft rock floor tunnel according to claim 1, characterized in that: It also comprises a first ear plate (5), wherein the first ear plate (5) is arranged on the bottom surface of the support beam (1) and extends downward, and one end of the support member (23) is connected to the first ear plate (5).

4. The advance support device for soft rock floor tunnel according to claim 3 is characterized in that: The first ear plate (5) is located at a middle position in the length direction of the support beam (1).

5. The advance support device for soft rock floor tunnel according to claim 3 is characterized in that: The connection points between one end of the two support members (23) and the first ear plate (5) are symmetrically arranged with respect to the central axis of the first ear plate (5) in the up-down direction.

6. The advance support device for soft rock floor tunnel according to claim 1, characterized in that: The support assembly (2) further comprises a second ear plate (24), wherein the second ear plate (24) is arranged at the other end of the support arm (21), and the other end of the support member (23) is connected to the second ear plate (24).

7. The advance support device for soft rock floor tunnel according to claim 6, characterized in that: The extension direction of the second ear plate (24) is orthogonal to the extension direction of the support arm (21).

8. The advance support device for soft rock floor tunnel according to claim 1, characterized in that: The side of the supporting palm (22) adjacent to the supporting arm (21) comprises a first side (221) and a second side (222), one end of the first side (221) is connected to one end of the side of the supporting palm (22) adjacent to the side wall of the lane (6), the other end of the first side (221) is connected to one end of the second side (222), the other end of the second side (222) is connected to the other end of the side of the supporting palm (22) adjacent to the side wall of the lane (6), and an angle is formed between the first side (221) and the second side (222), and the angle is an obtuse angle.

9. The advance support device for soft rock floor tunnel according to claim 8, characterized in that: The dimension of the first side surface (221) in the up-down direction is smaller than the dimension of the second side surface (222) in the up-down direction.

10. The advance support device for soft rock floor tunnel according to claim 8, characterized in that: The connection point between the other end of the support arm (21) and the support palm (22) is located at the connection point between the first side surface (221) and the second side surface (222).

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