Tunnel construction supporting device

Abstract

The invention discloses a tunnel construction supporting device which is arranged between a lining and a surrounding rock, can be connected with an anchor rod anchored on the surrounding rock and comprises a supporting piece, the supporting piece comprises a bent plate, a transverse partition plate and an edge plate, and the bent plate, the transverse partition plate and the edge plate are welded and integrally formed. The bending plates, the transverse partition plates and the edge plates are mutually welded and formed to form the honeycomb-shaped energy dissipation type yielding element supporting piece, the element has good deformation capacity and can continuously exert the energy dissipation function, instant impact on a supporting structure caused by accumulation of excessive energy is avoided, and therefore the toughness of a whole tunnel supporting system is improved, and the service life of the supporting structure is prolonged. Meanwhile, the yielding element can effectively relieve deformation and stress concentration of surrounding rock, reduce long-term pressure on the supporting structure and reduce accumulated damage caused by the stress self-adaptive adjustment effect, so that the service life of the tunnel supporting structure can be effectively prolonged, and the long-term safety of the tunnel supporting structure is improved.

Description

Technical Field

[0001] The invention relates to the technical field of tunnel construction, in particular to a tunnel construction supporting device. Background Art

[0003] When the tunnel structure passes through weak rock layers and broken zones, the surrounding rock will deform greatly during the excavation process, causing damage to the support structure or overall stability problems; the shotcrete will crack or fall off under the deformation of the surrounding rock, losing its support function; the steel frame may undergo plastic deformation or damage under high stress. In view of the characteristics of large deformation tunnels, effective design and construction strategies are urgently needed to ensure the smooth implementation of the project and reduce adverse effects. To this end, we proposed a tunnel construction support device. Summary of the invention

[0004] The object of the present invention is to provide a tunnel construction support device to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a tunnel construction support device, which is arranged between the lining and the surrounding rock and can be connected to the anchor rods anchored on the surrounding rock, including a support member, wherein the support member includes a bent plate, a transverse partition and an edge plate, wherein the bent plate, the transverse partition and the edge plate are welded to each other as an integral whole, and the cross-sectional shape of the support member is a honeycomb shape, and the support member is provided with an auxiliary component before welding to facilitate the welding of the support member, wherein the auxiliary component includes a pillar, a socket is fixedly installed on the side of the pillar, and a baffle is fixedly installed on both ends of the pillar, and a convex seat is fixedly installed on the side of the baffle, and an L-shaped seat is fixedly installed on the adjacent side of the pillar to which the socket side is fixed, and the end of the L-shaped seat is fixedly connected to the convex seat; a connecting component is also provided on the pillar, and the connecting component includes a rotatable device rotatably arranged inside the L-shaped seat. The first and second disc shafts, a transmission shaft and a gear shaft rotatably arranged inside the pillar, and a driving rack slidably arranged inside the pillar, a square rod is fixedly installed on the side of the first disc shaft, a screw is slidably arranged on the square rod, a fixing nut is threadedly connected to the screw, and the fixing nut is fixedly installed on the side wall of the inner cavity of the convex seat, and a pulley group for transmission connection with the second disc shaft is provided on the first disc shaft, and a third disc shaft and a secondary bevel gear are fixedly installed at both ends of the transmission shaft, and a connecting rod is provided between the third disc shaft and the second disc shaft, and the two ends of the connecting rod are movably connected with the second disc shaft and the third disc shaft, and the two ends of the gear shaft are fixedly installed with a transmission gear and a main bevel gear, the main bevel gear is meshed with the secondary bevel gear for transmission connection, and the transmission gear is meshed with the driving rack.

[0006] Preferably, the edge plate is provided with a threaded hole matched with the screw rod, and the edge plate can contact with the blocking bar.

[0007] Preferably, the socket is located on a side surface adjacent to the support and the transverse partition, and the transverse partition is plugged into the socket.

[0008] Preferably, the baffle can contact with the bending plate to form a contact surface, and the contact surface is inclined.

[0009] Preferably, a limit block is fixedly installed at the end of the square rod, and the size of the limit block is larger than the size of the square hole on the screw rod for passing through the square rod.

[0010] Preferably, the square rod is located in the inner cavity of the boss, and the central axis of the first disc-shaped shaft coincides with the central axis of the screw.

[0011] Preferably, there are two auxiliary bevel gears in total, both of which are located in the internal cavity of the pillar, and both of which are also meshingly connected with the main bevel gear.

[0012] Preferably, a fixing rod is fixedly mounted on the side surface of the driving rack, and a sliding button is fixedly mounted on the end of the fixing rod.

[0013] Preferably, a slide groove for accommodating the fixing rod is provided on the pillar, the slide groove is of an open design, and the slide button is located on the end of the fixing rod passing through the slide groove.

[0014] Compared with the prior art, the present invention has the following beneficial effects: The present invention forms a honeycomb-shaped energy-absorbing pressure-yielding element support by welding a bending plate, a transverse partition and an edge plate. The element not only has a certain deformation ability, but also can avoid the accumulation of excessive energy and cause instantaneous impact on the support structure through continuous energy dissipation, thereby improving the toughness of the entire tunnel support system. At the same time, the pressure-yielding element can effectively alleviate the deformation and stress concentration of the surrounding rock, reduce the long-term pressure on the support structure, and reduce the cumulative damage caused by the adaptive adjustment of stress. Therefore, the service life of the tunnel support structure can be effectively extended and its long-term safety can be improved.

[0015] According to the present invention, during the manufacturing process of the support parts, auxiliary components can be first used to position the bending plates, transverse partitions and edge plates to avoid displacement of the bending plates or transverse partitions when the support parts are welded, so as to facilitate the actual manufacturing of the support parts and improve their manufacturing efficiency.

[0016] The present invention further adds a connecting component to the auxiliary component so that the user can quickly temporarily fix the auxiliary component to the supporting member. Therefore, after the supporting member is welded and formed, the auxiliary component can also be quickly removed from the supporting member, thereby further improving the use efficiency of the overall device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the manufacturing structure of the support member of the present invention; Figure 3 This is an exploded view of the pillar structure of the present invention; Figure 4 It is a schematic diagram of the partial structure cutaway of the present invention; Figure 5 This is an exploded view of the square rod structure of the present invention; Figure 6 It is a first cross-sectional schematic diagram of the pillar structure of the present invention; Figure 7 It is a second cross-sectional schematic diagram of the pillar structure of the present invention; Figure 8 It is a third cross-sectional schematic diagram of the pillar structure of the present invention; Fig. 9 It is a schematic diagram of the fixing rod structure of the present invention.

[0018] In the figure: 1, lining; 11, surrounding rock; 12, anchor rod; 2, supporting member; 21, bending plate; 22, diaphragm; 23, edge plate; 3, auxiliary component; 31, baffle; 32, socket; 33, pillar; 34, L-shaped seat; 35, boss; 4, connecting component; 41, screw; 42, slide button; 43, limit block; 44, fixing nut; 45, square rod; 46, first disc shaft; 47, pulley group; 48, second disc shaft; 49, connecting rod; 410, third disc shaft; 411, transmission shaft; 412, secondary bevel gear; 413, main bevel gear; 414, gear shaft; 415, transmission gear; 416, driving rack; 417, fixing rod. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] See also Figure 1-9The present invention provides a technical solution: a tunnel construction support device, which is arranged between a lining 1 and a surrounding rock 11 and can be connected to an anchor rod 12 anchored on the surrounding rock 11, and includes a support member 2, the support member 2 includes a bending plate 21, a diaphragm 22 and an edge plate 23, the bending plate 21, the diaphragm 22 and the edge plate 23 are welded to each other as an integral body, and the cross-sectional shape of the support member 2 is a honeycomb shape, and the support member 2 is provided with an auxiliary component 3 before welding to facilitate the welding of the support member 2, the auxiliary component 3 includes a pillar 33, a socket 32 ​​is fixedly installed on the side of the pillar 33, and a retaining bar 31 is fixedly installed at both ends of the pillar 33, and the side of the retaining bar 31 is fixedly installed. A boss 35 is fixedly installed on the surface, and an L-shaped seat 34 is fixedly installed on the adjacent side of the pillar 33 and the side where the socket 32 ​​is fixed, and the end of the L-shaped seat 34 is fixedly connected to the boss 35; a threaded hole that cooperates with the screw 41 is opened on the side plate 23, and the side plate 23 can contact with the baffle 31, and the socket 32 ​​is located on the side adjacent to the pillar 33 and the cross partition 22, and the cross partition 22 is plugged into the socket 32. The baffle 31 can contact with the bending plate 21 to form a contact surface, and the contact surface is designed to be inclined to ensure that the auxiliary component 3 is limited to the welding requirement of the support member 2 to ensure the strength of the weld after the support member 2 is welded, so that it meets the actual support requirements.

[0021] The support column 33 is also provided with a connecting assembly 4, which includes a first disc-shaped shaft 46 and a second disc-shaped shaft 48 rotatably arranged inside the L-shaped seat 34, a transmission shaft 411 and a gear shaft 414 rotatably arranged inside the support column 33, and a driving rack 416 slidably arranged inside the support column 33. A square rod 45 is fixedly installed on the side of the first disc-shaped shaft 46, a screw rod 41 is slidably arranged on the square rod 45, a fixing nut 44 is threadedly connected to the screw rod 41, and the fixing nut 44 is fixedly installed on the side wall of the inner cavity of the convex seat 35. On the first disc-shaped shaft 46, a pulley group 47 for transmission connection with the second disc-shaped shaft 48 is provided, and the third disc-shaped shaft 410 and the auxiliary bevel gear 412 are fixedly installed at both ends of the transmission shaft 411, and a connecting rod 49 is provided between the third disc-shaped shaft 410 and the second disc-shaped shaft 48. The two ends of the connecting rod 49 are movably connected with the second disc-shaped shaft 48 and the third disc-shaped shaft 410, and the two ends of the gear shaft 414 are fixedly installed with a transmission gear 415 and a main bevel gear 413, and the main bevel gear 413 and the auxiliary bevel gear 412 are fixedly installed. 412 is meshed and connected, the transmission gear 415 is meshed and connected with the driving rack 416, and a limit block 43 is fixedly installed at the end of the square rod 45. The size of the limit block 43 is larger than the size of the square hole on the screw 41 for passing through the square rod 45. The limit block 43 is used to avoid the phenomenon of the screw 41, thereby ensuring the stability of the overall structural design. The square rod 45 is located in the inner cavity of the convex seat 35. The central axis of the first disc-shaped shaft 46 coincides with the central axis of the screw 41. There are two auxiliary bevel gears 412, and the two auxiliary bevel gears The bevel gears 412 are all located in the internal cavity of the pillar 33, and the two auxiliary bevel gears 412 are also meshed and transmission connected with the main bevel gear 413. A fixing rod 417 is fixedly installed on the side of the driving rack 416, and a sliding button 42 is fixedly installed on the end of the fixing rod 417. A sliding groove for accommodating the fixing rod 417 is opened on the pillar 33. The sliding groove is an open design, and the sliding button 42 is located on the end of the fixing rod 417 passing through the sliding groove, which is convenient for the user to actually operate, so that the overall structural design is more in line with the actual application scenario.

[0022] Working principle: When the support member 2 is welded and manufactured, the slide button 42 is pushed, and the driving rack 416 fixedly connected with the fixed rod 417 and the slide button 42 can slide inside the pillar 33. While sliding, the transmission gear 415 meshing with the driving rack 416 rotates together, and the main bevel gear 413 and the secondary bevel gear 412 are meshed and connected to each other by the gear shaft 414 and the transmission gear 415, and the third disc shaft 410 fixedly connected with the transmission shaft 411 rotates together, wherein the two ends of the connecting rod 49 are respectively connected with the third disc shaft 410 and the second disc shaft 411. The first disc shaft 46 and the second disc shaft 48 are movably connected, and the second disc shaft 48 and the first disc shaft 46 are connected by a pulley group 47. Therefore, after the third disc shaft 410 rotates, the first disc shaft 46 and the second disc shaft 48 rotate together inside the L-shaped seat 34, and the first disc shaft 46 is fixedly connected to the square rod 45 in the inner cavity of the convex seat 35, and the square rod 45 is slidably connected to the screw 41, and the screw 41 is also threadedly connected to the fixing nut 44 fixed inside the convex seat 35. Therefore, after the first disc shaft 46 rotates, the screw 41 will be screwed out from the inside of the convex seat 35 and then screwed into the edge. The inside of the threaded hole on the plate 23 is used to connect the pillar 33 and the baffle 31 fixed on the pillar 33 with the side plate 23. At this time, the diaphragm 22 can be inserted into the socket 32 ​​first, and then the baffle 31 is used to cooperate with the diaphragm 22 plugged into the socket 32 ​​to limit the position of the bending plate 21, the diaphragm 22 and the side plate 23 to ensure the quality of welding between the bending plate 21, the diaphragm 22 and the side plate 23 to ensure the subsequent support effect. After pushing the slide button 42 back, the transmission gear 415 is driven to rotate in the opposite direction, so that the screw 41 is moved from the side After the honeycomb support member 2 is detached from the upper plate 23, the retaining bar 31 can be removed from the welded support member 2; finally, the honeycomb support member 2 is placed between the surrounding rock 11 and the lining 1, and the support member 2 can also be connected to the anchor rod 12 to ensure the stability of the position of the support member 2. The constant resistance value, compression displacement and absorption of the deformation energy of the surrounding rock 11 of the honeycomb support member 2 can be adjusted by changing the parameters of the honeycomb support member 2, and if the pressure released by the surrounding rock 11 is not fully absorbed in the constant resistance deformation stage of the honeycomb support member 2, the compaction stage of the pressure element can provide the final safety guarantee.

[0023] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0024] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A tunnel construction support device, arranged between a lining (1) and a surrounding rock (11), and connectable to an anchor rod (12) anchored on the surrounding rock (11), characterized in that: The support member (2) comprises a bending plate (21), a transverse partition (22) and an edge plate (23), the bending plate (21), the transverse partition (22) and the edge plate (23) being welded to each other to form an integral body, and the cross-sectional shape of the support member (2) is a honeycomb shape, and the support member (2) is provided with an auxiliary component (3) before welding to facilitate the welding of the support member (2), and the auxiliary component (3) comprises a pillar (33), a socket (32) being fixedly mounted on a side of the pillar (33), and a retaining bar (31) being fixedly mounted on both ends of the pillar (33), a convex seat (35) being fixedly mounted on a side of the retaining bar (31), and an L-shaped seat (34) being fixedly mounted on a side adjacent to the side of the pillar (33) to which the socket (32) is fixed, and an end of the L-shaped seat (34) is fixedly connected to the convex seat (35); The support column (33) is also provided with a connecting assembly (4), the connecting assembly (4) comprising a first disc-shaped shaft (46) and a second disc-shaped shaft (48) rotatably arranged inside the L-shaped seat (34), a transmission shaft (411) and a gear shaft (414) rotatably arranged inside the support column (33), and a driving rack (416) slidably arranged inside the support column (33), a square rod (45) is fixedly mounted on the side of the first disc-shaped shaft (46), a screw rod (41) is slidably arranged on the square rod (45), a fixing nut (44) is threadedly connected to the screw rod (41), and the fixing nut (44) is fixedly mounted on the side wall of the inner cavity of the convex seat (35), and a drive rack (411) is provided on the first disc-shaped shaft (46). A pulley group (47) is provided for transmission connection with the second disc-shaped shaft (48); a third disc-shaped shaft (410) and a secondary bevel gear (412) are respectively fixedly mounted on both ends of the transmission shaft (411); a connecting rod (49) is provided between the third disc-shaped shaft (410) and the second disc-shaped shaft (48); both ends of the connecting rod (49) are respectively movably connected to the second disc-shaped shaft (48) and the third disc-shaped shaft (410); a transmission gear (415) and a main bevel gear (413) are respectively fixedly mounted on both ends of the gear shaft (414); the main bevel gear (413) is meshingly connected to the secondary bevel gear (412) for transmission connection; and the transmission gear (415) is meshingly connected to the driving rack (416).

2. A tunnel construction support device according to claim 1, characterized in that: The edge plate (23) is provided with a threaded hole that cooperates with the screw rod (41), and the edge plate (23) can contact the blocking bar (31).

3. A tunnel construction support device according to claim 1, characterized in that: The socket (32) is located on a side surface of the support (33) adjacent to the transverse partition (22), and the transverse partition (22) is plugged into the socket (32).

4. A tunnel construction support device according to claim 1, characterized in that: The blocking strip (31) can contact the bending plate (21) to form a contact surface, and the contact surface is of inclined design.

5. A tunnel construction support device according to claim 1, characterized in that: A limit block (43) is fixedly mounted on the end of the square rod (45), and the size of the limit block (43) is larger than the size of the square hole on the screw rod (41) for passing through the square rod (45).

6. A tunnel construction support device according to claim 1, characterized in that: The square rod (45) is located in the inner cavity of the convex seat (35), and the central axis of the first disc-shaped shaft (46) coincides with the central axis of the screw rod (41).

7. A tunnel construction support device according to claim 1, characterized in that: There are two auxiliary bevel gears (412) in total, and both of the two auxiliary bevel gears (412) are located in the internal cavity of the pillar (33), and both of the two auxiliary bevel gears (412) are also meshed and transmission-connected with the main bevel gear (413).

8. A tunnel construction support device according to claim 1, characterized in that: A fixing rod (417) is fixedly mounted on the side of the driving rack (416), and a sliding button (42) is fixedly mounted on the end of the fixing rod (417).

9. A tunnel construction support device according to claim 8, characterized in that: The support column (33) is provided with a slide groove for accommodating the fixing rod (417), the slide groove is of an open design, and the slide button (42) is located on the end of the fixing rod (417) passing through the slide groove.

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