Brackets for temporary support of tunnels

Abstract

The present invention discloses a support for temporary support of a tunnel, comprising: a top beam, a bottom beam, a side support assembly and a driving mechanism, wherein the top beam can be supported on the top plate of the tunnel; the bottom beam is connected to the top beam and can be supported on the bottom plate of the tunnel; the side support assembly can be movably connected to the top beam and can be supported on the side wall of the tunnel; the driving mechanism is connected to the top beam and the side support assembly and is used to drive the side support assembly to move. The vertical stress of the tunnel top plate acting on the top beam can be transmitted to the side wall of the tunnel in turn through the driving mechanism and the side support assembly. At the same time, the horizontal stress of the side wall of the tunnel acting on the side support assembly can be transmitted to the top plate of the tunnel in turn through the driving mechanism and the top beam. In this way, the vertical stress and horizontal stress of the tunnel can offset each other in part under the action of the driving mechanism and the side support assembly, so that the support of the embodiment of the present invention is not easily bent or damaged by the stress in the tunnel, the service life is extended, and the support effect is improved.

Description

Technical Field

[0001] The invention relates to the technical field of mining, and in particular to a bracket used for temporary support of a tunnel. Background Art

[0002] In view of the advantages of high support efficiency and low labor intensity, advance support is widely used in the field of coal mining. However, when the support is supported in the tunnel, due to the stress existing in the tunnel rock formation, the sudden appearance of these stresses will bend or damage the support, resulting in the failure to ensure the support effect, thereby affecting the mining efficiency. Summary of the invention

[0003] An embodiment of the present invention provides a support for temporary support of a tunnel, which can offset vertical stress and horizontal stress in the tunnel.

[0004] The support for temporary support of a tunnel according to an embodiment of the present invention comprises: a top beam, a bottom beam, a side support assembly and a driving mechanism, wherein the top beam can be supported on the top plate of the tunnel; the bottom beam is connected to the top beam and can be supported on the bottom plate of the tunnel; the side support assembly is movably connected to the top beam and can be supported on the side wall of the tunnel; the driving mechanism is connected to the top beam and the side support assembly and is used to drive the side support assembly to move.

[0005] According to some embodiments of the present invention, the side support assembly includes a movable member and a support member, the movable member is movably connected to the top beam, and the support member is hinged to the movable member;

[0006] When the driving mechanism is working, it can drive the supporting member to move toward the side wall of the tunnel, and the supporting member drives the movable member to move relative to the top beam.

[0007] According to some embodiments of the present invention, the driving mechanism comprises a hydraulic cylinder, and two ends of the hydraulic cylinder are respectively hinged to the top beam and the support member.

[0008] According to some embodiments of the present invention, one end of the movable member opposite to the supporting member is hinged to the top beam.

[0009] According to some embodiments of the present invention, one end of the movable member relative to the supporting member is telescopically connected to the top beam.

[0010] According to some embodiments of the present invention, the top beam includes a fixed beam and a telescopic beam, and the telescopic beam is telescopically connected to the fixed beam.

[0011] According to some embodiments of the present invention, the bracket further comprises a locking member for limiting the relative position of the fixed beam and the telescopic beam.

[0012] According to some embodiments of the present invention, the bottom beam comprises a supporting oil cylinder and a base, one end of the supporting oil cylinder is rotatably connected to the top beam, and the other end is rotatably connected to the base;

[0013] An insertion portion is provided on one side of the base, and the insertion portion can be inserted into the bottom plate of the tunnel;

[0014] The other end of the supporting oil cylinder and the other side of the base form a spherical pair.

[0015] According to some embodiments of the present invention, the insertion portion includes a first insertion portion and a second insertion portion, the first insertion portion being closer to a middle area of ​​the lane relative to the second insertion portion;

[0016] When the base is disposed on a bottom plate of a lane, the first insertion portion is inserted deeper into the bottom plate than the second insertion portion, so that the base is inclined toward the inside of the lane.

[0017] According to some embodiments of the present invention, the first insert portion comprises an inverted conical structure, and the second insert portion comprises a cylindrical structure.

[0018] One embodiment of the above invention has the following advantages or beneficial effects:

[0019] The bracket for temporary support of a tunnel according to an embodiment of the present invention adopts a side support assembly that is movably connected to the top beam and can be supported on the side wall of the tunnel, and a driving mechanism is connected to the top beam and the side support assembly, and a technical means for driving the movement of the side support assembly is used, so that the vertical stress of the tunnel roof acting on the top beam can be transmitted to the side wall of the tunnel in sequence through the driving mechanism and the side support assembly. At the same time, the horizontal stress of the side wall of the tunnel acting on the side support assembly can be transmitted to the tunnel roof in sequence through the driving mechanism and the top beam. In this way, the vertical stress and horizontal stress of the tunnel can offset each other in part under the action of the driving mechanism and the side support assembly, so that the bracket according to the embodiment of the present invention is not easily bent or damaged by the stress in the tunnel, thereby extending the service life and improving the support effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and other features and advantages of the present invention will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings.

[0021] Figure 1 Shown is a schematic structural diagram of a support for temporary tunnel support according to an embodiment of the present invention when it is in a retracted state.

[0022] Figure 2 Shown is a schematic structural diagram of a support for temporary tunnel support according to an embodiment of the present invention when it is in an expanded state.

[0023] Figure 3 Shown is a schematic structural diagram of a base from one viewing angle of an embodiment of the present invention.

[0024] Figure 4 Shown is a schematic structural diagram of a base from another viewing angle of an embodiment of the present invention.

[0025] The reference numerals are described as follows:

[0026] 100. Bracket

[0027] 110. Top beam

[0028] 111. Fixed beam

[0029] 112. Telescopic beam

[0030] 120. Bottom beam

[0031] 121. Support cylinder

[0032] 122. Base

[0033] 1221. Insertion

[0034] 1221a, first insertion portion

[0035] 1221b, second insertion portion

[0036] 1222, Spherical Structure

[0037] 130. Side support assembly

[0038] 131. Moving parts

[0039] 132. Support

[0040] 140. Driving mechanism DETAILED DESCRIPTION

[0041] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that the present invention will be comprehensive and complete and fully convey the concepts of the example embodiments to those skilled in the art. The same reference numerals in the figures represent the same or similar structures, and thus their detailed description will be omitted.

[0042] like Figure 1 and Figure 2 As shown, Figure 1 Shown is a schematic structural diagram of a support for temporary tunnel support according to an embodiment of the present invention when it is in a retracted state. Figure 2Shown is a schematic diagram of the structure of a support for temporary support of a tunnel according to an embodiment of the present invention when it is in an expanded state. The support for temporary support of a tunnel according to an embodiment of the present invention comprises: a top beam 110, a bottom beam 120, a side support assembly 130 and a driving mechanism 140. The top beam 110 can be supported on the top plate of the tunnel. The bottom beam 120 is connected to the top beam 110 and can be supported on the bottom plate of the tunnel. The side support assembly 130 is movably connected to the top beam 110 and can be supported on the side wall of the tunnel. The driving mechanism 140 is connected to the top beam 110 and the side support assembly 130, and is used to drive the side support assembly 130 to move.

[0043] When the support 100 of the embodiment of the present invention is supported in the tunnel, the bottom beam 120 is supported on the bottom plate of the tunnel and supports the top beam 110, so that the top beam 110 can be supported on the top plate of the tunnel. At the same time, the side support assembly 130 is driven by the driving mechanism 140 to be supported on the side wall of the tunnel.

[0044] The support for temporary support of the tunnel in the embodiment of the present invention adopts a side support assembly 130 that is movably connected to the top beam 110 and can be supported on the side wall of the tunnel, and a driving mechanism 140 is connected to the top beam 110 and the side support assembly 130, and is used to drive the side support assembly 130 to move. The technical means enable the vertical stress of the tunnel roof acting on the top beam 110 to be transmitted to the side wall of the tunnel through the driving mechanism 140 and the side support assembly 130 in sequence. At the same time, the horizontal stress of the side wall of the tunnel acting on the side support assembly 130 can be transmitted to the roof of the tunnel through the driving mechanism 140 and the top beam 110 in sequence. In this way, the vertical stress and horizontal stress of the tunnel can offset each other in part under the action of the driving mechanism 140 and the side support assembly 130, so that the support in the embodiment of the present invention is not easily bent or damaged by the stress in the tunnel, thereby extending the service life and improving the support effect.

[0045] Please continue reading Figure 1 and Figure 2 There are two side support assemblies 130, which are movably connected to two opposite ends of the top beam 110 and are used to support the two side walls of the tunnel respectively.

[0046] The side support assembly 130 includes a movable member 131 and a support member 132. The movable member 131 is movably connected to the top beam 110. The support member 132 includes a connecting end 1321 and a free end 1322. The connecting end 1321 is hinged to the movable member 131, and the free end 1322 hangs down naturally.

[0047] When the driving mechanism 140 is working, since the support member 132 is hinged to the movable member 131, the support member 132 can rotate relative to the movable member 131 around the hinge point, thereby enabling the support member 132 to move toward the side of the tunnel. During the movement of the support member 132, the support member 132 drives the movable member 131 to move relative to the top beam 110.

[0048] In this embodiment, the structure of the side support assembly 130 is specifically defined. The support member 132 is hinged to the movable member 131 and the movable member 131 is movably connected to the top beam 110. Therefore, after receiving the driving force of the driving mechanism 140, the support member 132 can move along the width direction of the tunnel, thereby ensuring that one side surface of the support member 132 can be attached to the side wall of the tunnel as a whole, thereby increasing the contact area between the support member 132 and the side wall.

[0049] Furthermore, one end of the movable member 131 opposite to the supporting member 132 is hinged to the top beam 110 , that is, the two ends of the movable member 131 are hinged to the top beam 110 and the supporting member 132 , respectively.

[0050] When the driving mechanism 140 is working, the two supporting members 132 approach the two side walls of the tunnel in a direction away from each other, and the two movable members 131 swing around their respective hinge points toward the roof of the tunnel.

[0051] Of course, it is understandable that one end of the movable member 131 relative to the support member 132 can also be telescopically connected to the top beam 110. Specifically, one end of the movable member 131 is telescopically connected to the top beam 110, and the other end of the movable member 131 is hinged to the support member 132.

[0052] When the driving mechanism 140 is working, the two supporting members 132 move away from each other and approach the two side walls of the lane, respectively. The two movable members 131 also move away from each other.

[0053] In a specific implementation, the driving mechanism 140 may include a hydraulic cylinder, and two ends of the hydraulic cylinder are hinged to the top beam 110 and the support member 132 respectively.

[0054] When the telescopic rod of the hydraulic cylinder is extended, the two support members 132 approach the two side walls of the tunnel in directions away from each other; when the telescopic rod of the hydraulic cylinder is retracted, the two support members 132 move in directions approaching each other.

[0055] Please continue reading Figure 1 and Figure 2 The top beam 110 may include a fixed beam 111 and a telescopic beam 112, and the telescopic beam 112 is telescopically connected to the fixed beam 111. The telescopic beam 112 can be telescopic relative to the fixed beam 111, so that the length of the top beam 110 can be extended or shortened to adapt to lanes of different widths.

[0056] The driving mechanism 140 and the side support assembly 130 are both connected to the telescopic beam 112 and can move along with the telescopic beam 112 .

[0057] Furthermore, the bracket 100 further includes a locking member for limiting the relative position of the fixed beam 111 and the telescopic beam 112. When the telescopic beam 112 is extended or retracted a certain distance relative to the fixed beam 111, the locking member can limit the overall length of the top beam 110.

[0058] In a specific embodiment, the locking member can be a pin. The fixed beam 111 and the telescopic beam 112 are each provided with a corresponding pin hole, and after the pin is inserted into the corresponding pin hole of the fixed beam 111 and the telescopic beam 112, the positions of the two can be locked.

[0059] Of course, the locking member is not limited to the pin, and may also be other components with a locking function, which are not listed here one by one.

[0060] In one embodiment, there are two telescopic beams 112, which are telescopically connected to two opposite ends of the fixed beam 111. The two driving mechanisms 140 are connected to the two telescopic beams 112, and the two side support assemblies 130 are connected to the two telescopic beams 112.

[0061] like Figure 1 and Figure 2 As shown, the bottom beam 120 includes a supporting cylinder 121 and a base 122. One end of the supporting cylinder 121 is rotatably connected to the top beam 110, and the other end is rotatably connected to the base 122. An insertion portion 1221 is provided on one side of the base 122, and the insertion portion 1221 can be inserted into the bottom plate of the tunnel. The base 122 is provided with the insertion portion 1221, and can be firmly set on the bottom plate of the tunnel.

[0062] In this embodiment, the two ends of the support cylinder 121 are rotatably connected to the top beam 110 and the base 122, respectively, so that the support personnel can adjust the angle of the support cylinder 121 relative to the vertical direction. Specifically, the inward tilt angle of the support cylinder 121 can be between 7° and 11°, thereby improving the stability of the bottom beam 120.

[0063] like Figure 3 and Figure 4 As shown, Figure 3 Shown is a schematic structural diagram of a base from one viewing angle of an embodiment of the present invention. Figure 4 The structure diagram of the base of the embodiment of the present invention from another perspective is shown. The support cylinder 121 and the base 122 form a spherical pair. Specifically, a spherical structure 1222 is provided on the side of the base 122 away from the tunnel bottom plate, and one end of the support cylinder 121 and the spherical structure 1222 form a spherical pair.

[0064] The inserting portion 1221 includes a first inserting portion 1221a and a second inserting portion 1221b, wherein the first inserting portion 1221a is closer to the middle area of ​​the lane relative to the second inserting portion 1221b. When the base 122 is arranged on the bottom plate of the lane, the first inserting portion 1221a is inserted deeper into the bottom plate relative to the second inserting portion 1221b, so that the base 122 is inclined toward the inside of the lane.

[0065] During the support process, the base 122 can be set at the junction of the side wall and the bottom plate of the tunnel, that is, the insertion part 1221 of the base 122 is inserted into the bottom plate, and the side of the base 122 abuts against the side wall. When horizontal stress appears on the side wall, since the first insertion part 1221a is inserted deeper into the bottom plate than the second insertion part 1221b, the base 122 can be tilted toward the inside of the tunnel to obliquely abut against the side wall. At the same time, the base 122 is tilted inwardly, and since the supporting cylinder 121 and the base 122 form a spherical pair, the reaction force of the base 122 on the supporting cylinder 121 can be transmitted along the axial direction of the supporting cylinder 121. In this way, the horizontal stress of the side wall can be avoided from bending the supporting cylinder 121.

[0066] In a specific embodiment, the first inserting portion 1221a includes an inverted conical structure, and the second inserting portion 1221b includes a cylindrical structure, but the present invention is not limited thereto.

[0067] In summary, the advantages and beneficial effects of the support for temporary tunnel support according to the embodiment of the present invention are:

[0068] The support for temporary support of the tunnel in the embodiment of the present invention adopts a side support assembly 130 that is movably connected to the top beam 110 and can be supported on the side wall of the tunnel, and a driving mechanism 140 is connected to the top beam 110 and the side support assembly 130, and is used to drive the side support assembly 130 to move. The technical means enable the vertical stress of the tunnel roof acting on the top beam 110 to be transmitted to the side wall of the tunnel through the driving mechanism 140 and the side support assembly 130 in sequence. At the same time, the horizontal stress of the side wall of the tunnel acting on the side support assembly 130 can be transmitted to the roof of the tunnel through the driving mechanism 140 and the top beam 110 in sequence. In this way, the vertical stress and horizontal stress of the tunnel can offset each other in part under the action of the driving mechanism 140 and the side support assembly 130, so that the support in the embodiment of the present invention is not easily bent or damaged by the stress in the tunnel, thereby extending the service life and improving the support effect.

[0069] In the embodiments of the invention, the terms "first", "second", and "third" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance; the term "plurality" refers to two or more, unless otherwise clearly defined. The terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the invention can be understood according to the specific circumstances.

[0070] In the description of the embodiments of the invention, it is necessary to understand that the directions or positional relationships indicated by the terms "up", "down", "left", "right", "front", "back", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the invention and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation, and therefore, cannot be understood as a limitation on the embodiments of the invention.

[0071] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means 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 invention embodiment. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0072] The above are only preferred embodiments of the invention embodiments, and are not intended to limit the invention embodiments. For those skilled in the art, the invention embodiments may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the invention embodiments shall be included in the protection scope of the invention embodiments.

Claims

1. A support for temporary support of a tunnel, characterized in that: include: A top beam (110) capable of supporting a roof of the tunnel; A bottom beam (120) is connected to the top beam (110) and can be supported on the bottom plate of the tunnel; the bottom beam (120) includes a supporting oil cylinder (121) and a base (122); one side of the base (122) is provided with an insertion portion (1221), and the insertion portion (1221) can be inserted into the bottom plate of the tunnel; one end of the supporting oil cylinder (121) is rotatably connected to the top beam (110), and the other end forms a spherical surface with the other side of the base (122). The insertion portion (1221) includes a first insertion portion (1221a) and a second insertion portion (1221b), wherein the first insertion portion (1221a) is closer to the middle area of ​​the lane relative to the second insertion portion (1221b); when the base (122) is arranged on the bottom plate of the lane, the first insertion portion (1221a) is inserted deeper into the bottom plate relative to the second insertion portion (1221b), so that the base (122) is inclined toward the inside of the lane; A side support assembly (130) is movably connected to the top beam (110) and is capable of supporting the side wall of the tunnel; as well as A driving mechanism (140) is connected to the top beam (110) and the side support assembly (130) and is used to drive the side support assembly (130) to move.

2. The support for temporary tunnel support according to claim 1, characterized in that: The side support assembly (130) comprises a movable member (131) and a support member (132), wherein the movable member (131) is movably connected to the top beam (110), and the support member (132) is hinged to the movable member (131); When the driving mechanism (140) is in operation, it can drive the support member (132) to move toward the side wall of the tunnel, and the support member (132) drives the movable member (131) to move relative to the top beam (110).

3. The support for temporary tunnel support according to claim 2, characterized in that: The driving mechanism (140) comprises a hydraulic cylinder, and two ends of the hydraulic cylinder are respectively hinged to the top beam (110) and the support member (132).

4. The support for temporary tunnel support according to claim 2, characterized in that: One end of the movable member (131) opposite to the supporting member (132) is hinged to the top beam (110).

5. The support for temporary tunnel support according to claim 2, characterized in that: One end of the movable member (131) opposite to the supporting member (132) is telescopically connected to the top beam (110).

6. The support for temporary tunnel support according to claim 1, characterized in that: The top beam (110) comprises a fixed beam (111) and a telescopic beam (112), and the telescopic beam (112) is telescopically connected to the fixed beam (111).

7. The support for temporary tunnel support according to claim 6, characterized in that: The bracket also includes a locking member for limiting the relative position of the fixed beam (111) and the telescopic beam (112).

8. The support for temporary tunnel support according to claim 1, characterized in that: The first inserting portion (1221a) includes an inverted conical structure, and the second inserting portion (1221b) includes a cylindrical structure.

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