Support device for tunnel construction

Abstract

The present invention discloses a support device for tunnel construction, comprising: a pair of columns; a support base horizontally arranged on the pair of columns; a first support mechanism including a first support rod, a first arc-shaped plate, a first elastic member and a first support plate; a pair of second support mechanisms symmetrically arranged on both sides of the first support rod, any one of the second support mechanisms being movable transversely and including a second support rod, a second arc-shaped plate, a second elastic member and a pair of second support plates; a pair of third support mechanisms, with one third support mechanism corresponding to each other between one second support mechanism and the first support mechanism, any one of the third support mechanisms including a third arc-shaped plate, a third elastic member and a third support plate. The present invention can support tunnels with different inner diameters, has good applicability and high support stability.

Description

Technical Field

[0001] The present invention relates to the technical field of tunnel construction. More specifically, the present invention relates to a support device for tunnel construction. Background Art

[0002] During tunnel construction, due to reasons such as geology and humidity, it is usually necessary to temporarily support a specified position to prevent excessive deformation of the surrounding rock, thereby ensuring the construction progress and construction safety. In the prior art, the support device is usually formed by manually erecting materials such as steel pipes, brackets, and templates at the specified position. The installation and disassembly are relatively cumbersome, and it cannot be adjusted according to the inner diameter of the tunnel, so the applicability is poor. Summary of the Invention

[0003] An object of the present invention is to solve at least the above problems and provide at least the advantages described later.

[0004] Another object of the present invention is to provide a support device for tunnel construction, which can support tunnels with different inner diameters, has good applicability, and has high support stability.

[0005] To achieve these objects and other advantages of the present invention, there is provided a support device for tunnel construction, including:

[0006] A pair of columns, which are arranged at intervals in the transverse direction, and any one of the columns is vertically arranged;

[0007] A support base, which is horizontally arranged on the pair of columns;

[0008] A first support mechanism, which includes:

[0009] A first support rod, which is vertically arranged on the support base;

[0010] A first arc-shaped plate, which is arranged at the upper end of the first support rod and is concave towards the first support rod;

[0011] A first support plate, which is arranged above the first arc-shaped plate. The first support plate is made of a flexible material and is connected to the first arc-shaped plate through a first elastic member;

[0012] A pair of second support mechanisms, which are symmetrically arranged on both sides of the first support rod in the transverse direction. Any one of the second support mechanisms includes:

[0013] A second support rod, the lower end of which is slidably connected to the top surface of the support base in the transverse direction, and the upper end of which extends obliquely upward away from the first support rod;

[0014] A second arc-shaped plate, which is arranged at the upper end of the second support rod and is concave towards the second support rod;

[0015] A pair of second support plates are longitudinally and spacedly arranged above the second arc-shaped plate. Any second support plate is made of a flexible material and is connected to the second arc-shaped plate through a second elastic member;

[0016] A pair of third support mechanisms, with one third support mechanism correspondingly arranged between one second support mechanism and the first support mechanism; Any third support mechanism includes:

[0017] A third arc-shaped plate, one end of which is hinged to the first arc-shaped plate, and the other end is slidably connected to the top surface of the corresponding second arc-shaped plate. The third arc-shaped plate is made of a flexible material;

[0018] A third support plate is arranged above the third arc-shaped plate and is located between the pair of second support plates. The third support plate is made of a flexible material and is connected to the third arc-shaped plate through a third elastic member.

[0019] Preferably, it further includes a pair of support platforms, both of which are arranged between the two columns and the support seat. One support platform is correspondingly arranged for one column. The bottom of any support platform is connected to the upper end of the corresponding column, and the top is slidably connected to the support seat in the transverse direction.

[0020] Preferably, a cavity is provided inside the support seat, and a pair of first through holes communicating with the cavity are provided on the top surface of the support seat. The pair of first through holes are transversely spaced apart on both sides of the first support rod. Any first through hole extends transversely, and one first through hole is correspondingly arranged for one second support rod; A pair of second through holes communicating with the cavity are provided on the bottom surface of the support seat. The pair of second through holes correspond to the pair of first through holes one by one; The tunnel construction support device further includes:

[0021] A screw rod is rotatably arranged in the cavity and is parallel to the transverse direction; The screw rod includes two parts with opposite thread directions along its length;

[0022] A pair of sliders, with one slider threadedly and rotatably sleeved on each of the two parts of the screw rod. Any slider is slidably connected to the cavity in the transverse direction. The upper end of any slider passes through the corresponding first through hole and is connected to the lower end of the corresponding second support rod. The lower end of any slider passes through the corresponding second through hole and is slidably connected to the corresponding support platform in the transverse direction.

[0023] Preferably, it further includes an airbag, one end of which is hermetically connected to one of the supporting platforms, and the other end sequentially passes between the second arc plate and the second support plate of one of the second supporting mechanisms, between the third arc plate and the third support plate of one of the third supporting mechanisms, between the first arc plate and the first support plate of the first supporting mechanism, between the third arc plate and the third support plate of the other third supporting mechanism, and between the second arc plate and the second support plate of the other second supporting mechanism, and then is hermetically connected to the other supporting platform through a pressing mechanism; the airbag is made of rubber material.

[0024] Preferably, for the first supporting mechanism, the first elastic member includes two first spring groups arranged at intervals along the longitudinal direction on both sides of the airbag, and any one of the first spring groups includes a plurality of first springs arranged at equal intervals along the circumferential direction of the first arc plate; for any one of the second supporting mechanisms, any one of the second elastic members includes a plurality of second springs arranged at equal intervals along the circumferential direction of the second arc plate, and the plurality of second springs are located outside the airbag; for any one of the third supporting mechanisms, the third elastic member includes two third spring groups arranged at intervals along the longitudinal direction on both sides of the airbag, and any one of the third spring groups includes a plurality of third springs arranged at equal intervals along the circumferential direction of the third arc plate.

[0025] Preferably, it further includes a reel, which is rotatably arranged on the bottom surface of the other supporting platform and is parallel to the longitudinal direction, and the other end of the airbag is wound around the reel.

[0026] Preferably, a groove is provided on one of the lateral sides of the other supporting platform, and the groove penetrates the other supporting platform along the longitudinal direction; the pressing mechanism includes:

[0027] A pressing block, which is correspondingly arranged with the groove and is located outside the airbag;

[0028] A pair of cylinders, which are symmetrically arranged on the two longitudinal sides of the other supporting platform, and the free end of the piston rod of any one of the cylinders extends in the lateral direction away from the other supporting platform and is connected to the pressing block.

[0029] Preferably, for the first support mechanism, a first partition is correspondingly arranged between any first spring group and the airbag. Any first partition is vertically arranged on the top surface of the first arc-shaped plate and does not interfere with the first support plate. For any second support mechanism, a second partition is correspondingly arranged between multiple second springs and the airbag. Any second partition is vertically arranged on the top surface of the second arc-shaped plate and does not interfere with any second support plate and any third arc-shaped plate. For any third support plate, a third partition group is correspondingly arranged between any third spring group and the airbag. Any third partition group includes multiple third partitions evenly spaced along the circumferential direction of the third arc-shaped plate. Any third partition is vertically arranged on the top surface of the third arc-shaped plate and does not interfere with any third support plate.

[0030] Preferably, any column includes a first vertical rod and a first sleeve. The first sleeve is sleeved on the upper end of the first vertical rod and is slidably connected with the first vertical rod in the vertical direction. A traveling mechanism is arranged at the lower end of the first vertical rod. The tunnel construction support device further includes:

[0031] A second vertical rod, which is vertically arranged below the support seat and located between a pair of first vertical rods. A thread is arranged on the second vertical rod.

[0032] A second sleeve, which is rotationally sleeved on the upper end of the second vertical rod in a threaded manner. The upper end of the second sleeve is connected to the support seat.

[0033] A pair of telescopic rods, which are symmetrically arranged on both sides of the second sleeve. Any telescopic rod is parallel to the transverse direction. The two ends of any telescopic rod are respectively connected to the second sleeve and the corresponding first sleeve.

[0034] A bottom plate, which is horizontally arranged at the lower end of the second vertical rod. The second vertical rod is rotatably connected to the bottom plate.

[0035] A pair of fixed rods, which are symmetrically arranged on both sides of the second vertical rod. Any fixed rod is vertically arranged and is slidably connected with the bottom plate in the vertical direction. The lower end of any fixed rod is conical.

[0036] The present invention has at least the following beneficial effects:

[0037] The present invention provides a first support mechanism, a pair of second support mechanisms, and a pair of third support mechanisms on the support base. Any one of the second support mechanisms can move horizontally. By the movement of the pair of second support mechanisms, tunnels with different inner diameters can be supported, and the applicability is relatively good. The first support plate of the first support mechanism, the second support plates of the pair of second support mechanisms, and the third support plates of the pair of third support mechanisms can be attached to the inner wall of the tunnel to jointly support the inner wall of the tunnel. Moreover, the third support plates of the pair of third support mechanisms support the position between the first support mechanism and the pair of second support mechanisms, which is beneficial to ensuring the stability of the support. In addition, the larger the inner diameter of the tunnel, the lower the support center of gravity of the present invention, which is beneficial to improving the stability of the support.

[0038] Other advantages, objectives, and features of the present invention will be partially reflected by the following description and partially understood by those skilled in the art through the research and practice of the present invention. Brief Description of the Drawings

[0039] Figure 1 It is a schematic structural view of the support device for tunnel construction according to one of the technical solutions of the present invention;

[0040] Figure 2 It is a top view of the second support mechanism and the third support mechanism according to one of the technical solutions of the present invention;

[0041] Figure 3 It is a top view of the second arc plate and the third arc plate according to one of the technical solutions of the present invention;

[0042] Figure 4 It is a schematic structural view of the interior of the support base according to one of the technical solutions of the present invention;

[0043] Figure 5 It is a top view of the support base according to one of the technical solutions of the present invention;

[0044] Figure 6 It is a schematic structural view of the pressing mechanism according to one of the technical solutions of the present invention;

[0045] Figure 7 It is a schematic structural view of the groove according to one of the technical solutions of the present invention;

[0046] Description of reference numerals: first vertical rod 1; first sleeve 2; support base 3; first support rod 4; first arc-shaped plate 5; first support plate 6; first spring 7; second support rod 8; second arc-shaped plate 9; second support plate 10; second spring 11; third arc-shaped plate 12; third support plate 13; third spring 14; support platform 15; first through hole 16; screw 17; slider 18; airbag 19; drum 20; groove 21; pressing block 22; cylinder 23; first partition 24; second partition 25; third partition 26; traveling mechanism 27; second vertical rod 28; second sleeve 29; telescopic rod 30; bottom plate 31; fixed rod 32; first motor 33; gear 34. Detailed implementation manners

[0047] The present invention will be further described in detail below with reference to the accompanying drawings, so that those skilled in the art can implement it according to the description in the specification.

[0048] It should be noted that in the description of the present invention, the orientation or positional relationships indicated by the terms "transverse", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the accompanying drawings. These are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of the present invention.

[0049] As Figures 1 to 7 shown, the present invention provides a support device for tunnel construction, including:

[0050] A pair of columns, which are arranged at intervals in the transverse direction (taking Figure 1 as an example, the left-right direction is the transverse direction), and any one of the columns is vertically arranged;

[0051] A support base 3, which is horizontally arranged on the pair of columns;

[0052] A first support mechanism, which includes:

[0053] A first support rod 4, which is vertically arranged on the support base 3;

[0054] A first arc-shaped plate 5, which is arranged at the upper end of the first support rod 4 and is concave towards the first support rod 4;

[0055] A first support plate 6, which is arranged above the first arc-shaped plate 5. The first support plate 6 is made of a flexible material and is connected to the first arc-shaped plate 5 through a first elastic member; the first support plate 6 is concave towards the first support rod 4;

[0056] A pair of second support mechanisms, symmetrically arranged on both sides of the first support rod 4 in the transverse direction. Any one of the second support mechanisms includes:

[0057] A second support rod 8, whose lower end is slidably connected to the top surface of the support base 3 in the transverse direction, and whose upper end extends obliquely upward away from the first support rod 4;

[0058] A second arc-shaped plate 9, arranged at the upper end of the second support rod 8 and recessed towards the second support rod 8;

[0059] A pair of second support plates 10, longitudinally spaced above the second arc-shaped plate 9 (taking the front-back direction as the longitudinal direction for example). Any one of the second support plates 10 is made of a flexible material and is connected to the second arc-shaped plate 9 through a second elastic member; any one of the second support plates 10 is recessed towards the second support rod 8; Figure 1 For example, the front-back direction is the longitudinal direction), any one of the second support plates 10 is made of a flexible material and is connected to the second arc-shaped plate 9 through a second elastic member; any one of the second support plates 10 is recessed towards the second support rod 8;

[0060] A pair of third support mechanisms, with one third support mechanism corresponding to be arranged between one second support mechanism and the first support mechanism; any one of the third support mechanisms includes:

[0061] A third arc-shaped plate 12, one end of which is hinged to the first arc-shaped plate 5, and the other end is slidably connected to the top surface of the corresponding second arc-shaped plate 9. The third arc-shaped plate 12 is made of a flexible material; the third arc-shaped plate 12 is recessed towards the support base 3;

[0062] A third support plate 13, arranged above the third arc-shaped plate 12 and located between a pair of second support plates 10,

[0063] The third support plate 13 is made of a flexible material and is connected to the third arc-shaped plate 12 through a third elastic member; the third support plate 13 is recessed towards the support base 3;

[0064] In the above technical solution, during use, the present invention is placed at a designated position inside the tunnel, such that the first support plate 6 of the first support mechanism abuts and contacts the top of the inner wall of the tunnel under the action of the first elastic member; then, the second support rods 8 of a pair of second support mechanisms are respectively moved transversely towards the direction close to the inner wall of the tunnel to the limit. The pair of second support plates 10 of any one of the second support mechanisms abut and contact the side surface of the inner wall of the tunnel under the action of the second elastic member. When any one of the second support rods 8 moves transversely, the other end of the third arc plate 12 of the third support mechanism close to it moves along the top surface of the second arc plate 9, and the third support plate 13 abuts and contacts the side surface of the inner wall of the tunnel under the action of the third elastic member; the first support mechanism, the pair of second support mechanisms, and the pair of third support mechanisms jointly support the inner wall of the tunnel, playing a role in support; in addition, the strengths of the third arc plate 12, the first elastic member, the second elastic member, and the third elastic member can all be selected according to the requirements of the use range; a plurality of telescopic connecting rods can be arranged below any one of the third arc plates 12, and the plurality of connecting rods are evenly spaced in the radial direction. The two ends of any one of the connecting rods are respectively hinged to the first arc plate 5 and the second arc plate 9 close to it. The plurality of connecting rods are beneficial to preventing the third arc plate 12 from undergoing excessive deformation, playing a role in limiting and protecting.

[0065] The present invention is provided with a first support mechanism, a pair of second support mechanisms, and a pair of third support mechanisms on the support base 3. Any one of the second support mechanisms can move transversely. Through the movement of the pair of second support mechanisms, tunnels with different inner diameters can be supported, and the applicability is relatively good; the first support plate 6 of the first support mechanism, the second support plates 10 of the pair of second support mechanisms, and the third support plates 13 of the pair of third support mechanisms can be in contact with the inner wall of the tunnel, jointly supporting the inner wall of the tunnel. Moreover, the third support plates 13 of the pair of third support mechanisms support the position between the first support mechanism and the pair of second support mechanisms, which is beneficial to ensuring the stability of the support; in addition, the larger the inner diameter of the tunnel, the lower the support center of gravity of the present invention, which is beneficial to improving the stability of the support.

[0066] In another technical solution, it further includes a pair of support platforms 15, which are both arranged between the two columns and the support base 3. One support platform 15 is correspondingly arranged for one column. The bottom of any one of the support platforms 15 is connected to the upper end of the corresponding column, and the top is slidably connected to the support base 3 in the transverse direction; the distance between the pair of columns can be adjusted according to the size of the inner diameter of the tunnel, and at the same time, the support base 3 is supported by the pair of support platforms 15, which is beneficial to further improving the stability of the support.

[0067] In another technical solution, a cavity is provided inside the support base 3, and a pair of first through holes 16 communicating with the cavity are provided on the top surface of the support base 3. The pair of first through holes 16 are arranged at intervals in the transverse direction on both sides of the first support rod 4. Any one of the first through holes 16 extends in the transverse direction, and one second support rod 8 corresponds to one first through hole 16; a pair of second through holes communicating with the cavity are provided on the bottom surface of the support base 3, and the pair of second through holes correspond to the pair of first through holes 16 one by one; the tunnel construction support device further includes:

[0068] A screw rod 17 which is rotatably arranged in the cavity and is parallel to the transverse direction; the screw rod 17 includes two parts with opposite thread directions along its length direction;

[0069] A pair of sliders 18, one slider 18 is threadedly sleeved and rotated on each of the two parts of the screw rod 17. Any one of the sliders 18 is slidably connected to the cavity in the transverse direction. The upper end of any one of the sliders 18 passes through the corresponding first through hole 16 and is connected to the lower end of the corresponding second support rod 8. The lower end of any one of the sliders 18 passes through the corresponding second through hole and is slidably connected to the corresponding support platform 15 in the transverse direction;

[0070] A first motor 33 is provided on the support base 3, and the output end of the first motor 33 is connected to one end of the screw rod 17; when the first motor 33 is started, the screw rod 17 is driven to rotate. The rotation of the screw rod 17 drives the pair of sliders 18 to move towards or away from each other in the transverse direction. Any one of the sliders 18 drives the corresponding second support rod 8 and the support platform 15 to move in the transverse direction, so that the pair of second support mechanisms move towards or away from each other in the transverse direction synchronously with the pair of support platforms 15 moving towards or away from each other in the transverse direction; the movement of the pair of first support mechanisms and the pair of support platforms 15 in the transverse direction is synchronously controlled by the first motor 33, which is simple to operate and convenient to control, and is also beneficial to ensuring the stability of the support. In another technical solution, an airbag 19 is further included. One end of the airbag 19 is hermetically connected to one of the support platforms 15, and the other end sequentially passes between the second arc-shaped plate 9 and the second support plate 10 of one of the second support mechanisms, between the third arc-shaped plate 12 and the third support plate 13 of one of the third support mechanisms, between the first arc-shaped plate 5 and the first support plate 6 of the first support mechanism, between the third arc-shaped plate 12 and the third support plate 13 of the other third support mechanism, and between the second arc-shaped plate 9 and the second support plate 10 of the other second support mechanism, and then is hermetically connected to the other support platform 15 through a pressing mechanism; the airbag 19 is made of rubber material;

[0071] One end of the airbag 19 is provided with a ventilation port, which is communicated with an electric air pump. The electric air pump can be used to inflate the airbag 19 and also extract the gas in the airbag 19. The airbag 19 is long enough and has a matching size. Before use, the airbag 19 is not inflated, and the pressing mechanism does not seal and connect the other end of the airbag 19 to another support platform 15.

[0072] During use, place the present invention at a designated position in the tunnel, so that the first support plate 6 of the first support mechanism abuts and contacts the top of the inner wall of the tunnel under the action of the first elastic member. Then, move the second support rods 8 of a pair of second support mechanisms respectively in the transverse direction towards the direction close to the inner wall of the tunnel to the limit. The pair of second support plates 10 of any one of the second support mechanisms abut and contact the side of the inner wall of the tunnel under the action of the second elastic member. At the same time, move a pair of support platforms 15 respectively in the transverse direction towards the direction close to the inner wall of the tunnel to the limit, and then seal and connect the other end of the airbag 19 to another support platform 15 through the pressing mechanism, that is, the other end of the airbag 19 is sealed. Then, inflate the airbag 19. When the airbag 19 is fully inflated (the pressure in the airbag 19 reaches a predetermined value), stop inflating.

[0073] The inflated airbag 19 can provide support force for the first support plate 6 of the first support mechanism, the second support plates 10 of a pair of second support mechanisms, and the third support plates 13 of a pair of third support mechanisms, which is beneficial to further improve the stability of the support. Moreover, the movement of one of the support platforms 15 will drive one end of the airbag 19 to move, drag the airbag 19, and thus change the length of the airbag 19 from one end to the pressing mechanism. The length of the airbag 19 from one end to the pressing mechanism is easy to adjust.

[0074] In another technical solution, for the first support mechanism, the first elastic member includes two groups of first springs 7 arranged at intervals longitudinally on both sides of the airbag 19. Any one group of first springs 7 includes a plurality of first springs 7 arranged at equal intervals circumferentially along the first arc-shaped plate 5. For any one of the second support mechanisms, any one second elastic member includes a plurality of second springs 11 arranged at equal intervals circumferentially along the second arc-shaped plate 9. The plurality of second springs 11 are located outside the airbag 19. For any one of the third support mechanisms, the third elastic member includes two groups of third springs 14 arranged at intervals longitudinally on both sides of the airbag 19. Any one group of third springs 14 includes a plurality of third springs 14 arranged at equal intervals circumferentially along the third arc-shaped plate 12.

[0075] A more suitable structure for the first elastic member, the second elastic member, and the third elastic member enables the first support plate 6, the second support plate 10, and the third support plate 13 to be evenly stressed and fit more closely to the inner wall of the tunnel, which is conducive to further ensuring the stability of the support. Additionally, a telescopic rod body can be disposed within any one of the first springs 7, the second springs 11, and the third springs 14. Any one of the first springs 7, the second springs 11, and the third springs 14 is sleeved on the corresponding rod body, and the two ends of the rod body are respectively connected to the corresponding first arc-shaped plate 5, the first support plate 6, or the corresponding second arc-shaped plate 9, the second support plate 10, or the corresponding third arc-shaped plate 12, the third support plate 13, which is conducive to further ensuring the stability of the support.

[0076] In another technical solution, it further includes a reel 20, which is rotatably disposed on the bottom surface of another support platform 15 and is parallel to the longitudinal direction. The other end of the airbag 19 is wound around the reel 20. The reel 20 can limit the other end of the airbag 19 and also facilitate the arrangement of the airbag 19, making it more convenient to adjust the length of the airbag 19 from one end to the pressing mechanism. Additionally, one of the lateral sides of another support platform 15 can be an outwardly convex arc surface to facilitate the movement of the airbag 19.

[0077] In another technical solution, a groove 21 is provided on one of the lateral sides of another support platform 15, and the groove 21 runs through another support platform 15 longitudinally. The pressing mechanism includes:

[0078] A pressing block 22, which is correspondingly disposed with the groove 21 and is located outside the airbag 19.

[0079] A pair of cylinders 23, which are symmetrically disposed on the two longitudinal sides of another support platform 15. The free end of the piston rod of any one of the cylinders 23 extends transversely away from another support platform 15 and is connected to the pressing block 22.

[0080] Before use, drive a pair of cylinders 23 to move the pressing block 22 transversely away from another support platform 15 until the pressing block 22 is completely separated from the groove 21 and the pressing block 22 does not interfere with the airbag 19, enabling the length of the airbag 19 from one end to the pressing mechanism to be adjustable. During use, after the positions of a pair of support platforms 15 and a pair of second support mechanisms are adjusted, drive a pair of cylinders 23 to move the pressing block 22 transversely towards another support platform 15 until the pressing block 22 moves into the groove 21 and presses the airbag 19 in the groove 21, sealing the other end of the airbag 19, and then inflate the airbag 19. The adjustment of the length of the airbag 19 from one end to the pressing mechanism and the sealing of the other end of the airbag 19 are both relatively simple and convenient to control.

[0081] In another technical solution, for the first support mechanism, a first partition 24 is correspondingly arranged between any set of the first springs 7 and the airbag 19. Any first partition 24 is vertically arranged on the top surface of the first arc-shaped plate 5 and does not interfere with the first support plate 6. For any second support mechanism, a second partition 25 is correspondingly arranged between multiple second springs 11 and the airbag 19. Any second partition 25 is vertically arranged on the top surface of the second arc-shaped plate 9 and does not interfere with any second support plate 10 or any third arc-shaped plate 12. For any third support plate 13, a set of third partitions 26 is correspondingly arranged between any set of the third springs 14 and the airbag 19. Any set of third partitions 26 includes multiple third partitions 26 evenly spaced along the circumferential direction of the third arc-shaped plate 12. Any third partition 26 is vertically arranged on the top surface of the third arc-shaped plate 12 and does not interfere with any third support plate 13. The lengths of the first partition 24, the second partition 25, and the set of third partitions 26 are appropriate to limit the airbag 19 longitudinally, avoid interference of the first spring 7, the second spring 11, and the third spring 14 with the movement of the airbag 19, and make the adjustment of the length of the airbag 19 from one end to the pressing mechanism more convenient.

[0082] In another technical solution, any column includes a first vertical rod 1 and a first sleeve 2. The first sleeve 2 is sleeved on the upper end of the first vertical rod 1 and is slidably connected with the first vertical rod 1 in the vertical direction. A traveling mechanism 27 is arranged at the lower end of the first vertical rod 1, and the upper end of the first sleeve 2 is connected to the corresponding support platform 15. The tunnel construction support device further includes:

[0083] A second vertical rod 28, which is vertically arranged below the support seat 3 and is located between a pair of first vertical rods 1. Threads are provided on the second vertical rod 28.

[0084] A second sleeve 29, which is rotatably sleeved on the upper end of the second vertical rod 28 in a threaded manner. The upper end of the second sleeve 29 is connected to the support seat 3.

[0085] A pair of telescopic rods 30, which are symmetrically arranged on both sides of the second sleeve 29. Any telescopic rod 30 is parallel to the horizontal direction. The two ends of any telescopic rod 30 are respectively connected to the second sleeve 29 and the corresponding first sleeve 2.

[0086] A bottom plate 31, which is horizontally arranged at the lower end of the second vertical rod 28. The second vertical rod 28 is rotatably connected to the bottom plate 31.

[0087] A pair of fixed rods 32, which are symmetrically arranged on both sides of the second vertical rod 28. Any fixed rod 32 is vertically arranged and is slidably connected with the bottom plate 31 in the vertical direction. The lower end of any fixed rod 32 is conical.

[0088] A pair of walking mechanisms 27 are provided at the lower ends of the first vertical rods 1. The walking mechanisms 27 are universal wheels, which are convenient for movement. Through a pair of fixing rods 32, the bottom plate 31 can be fixed at a specified position in the tunnel for positioning. A second motor is provided on the bottom plate 31. The output shaft of the second motor is in transmission connection with the second vertical rod 28 through a gear 34. When the second motor is started, under the action of the transmission of the gear 34, the second vertical rod 28 is driven to rotate. Then, under the action of a pair of telescopic rods 30, the second sleeve 29 and a pair of first sleeves 2 move synchronously in the vertical direction to adjust the heights of the support seats 3 and a pair of support platforms 15, so as to support tunnels of different heights. The operation is simple and easy to control. At the same time, it is also convenient to separate the first support mechanism, a pair of second support mechanisms and a pair of second support mechanisms from the inner wall of the tunnel, and then place the present invention at another specified position or in another tunnel for support. In addition, a pair of first vertical rods 1 and the second vertical rod 28 can be respectively connected by a transverse telescopic rod, and a diagonal brace can be arranged between a first sleeve and a corresponding support platform 15, which is beneficial to ensuring the stability of the support.

[0089] The specific usage method is as follows:

[0090] Step 1: Move the present invention to a specified position in the tunnel, and then push a pair of fixing rods 32 downward until the lower ends of the pair of fixing rods 32 are inserted into the bottom surface for positioning.

[0091] Step 2: Drive the second motor to move the support seats 3 and a pair of support platforms 15 upward until the first support plate 6 of the first support mechanism abuts against the top of the inner wall of the tunnel.

[0092] Step 3: Drive the first motor 33 to move a pair of second support mechanisms and a pair of support platforms 15 transversely towards the direction close to the inner wall of the tunnel until the second support plates 10 of the pair of second support mechanisms abut against the side surfaces of the inner wall of the tunnel.

[0093] Step 4: Drive a pair of first cylinders 23 until the pressing block 22 presses the airbag 19 tightly in the groove 21, and the other end of the airbag 19 is sealed.

[0094] Step 5: Then, fill the airbag 19 with sufficient air, that is, realize the support of the specified position in the tunnel.

[0095] Step Six: When the designated position no longer requires support, first extract the gas from the airbag 19, and then drive a pair of first cylinders 23 until the pressing block 22 is completely separated from the groove 21; then drive the first motor 33 to move a pair of second support mechanisms and a pair of support platforms 15 laterally away from the inner wall of the tunnel until the pair of second support mechanisms are separated from the inner wall of the tunnel; then drive the second motor to move the support base 3 and a pair of support platforms 15 downward until the first support mechanism is separated from the inner wall of the tunnel; finally, pull the pair of fixing rods 32 upward so that the pair of fixing rods 32 do not interfere with the movement of the pair of traveling mechanisms 27, and then the present invention can be removed; it can be used for supporting another designated position or another tunnel.

[0096] Although the embodiments of the present invention have been disclosed as above, it is not limited to the applications listed in the specification and embodiments. It can be fully applied to various fields suitable for the present invention. For those familiar with the field, additional modifications can be easily achieved. Therefore, without departing from the general concept defined by the claims and the equivalent scope, the present invention is not limited to the specific details and the illustrated examples here.

Claims

1. Support device for tunnel construction, Characterized in that, Comprising: A pair of columns arranged at intervals transversely, and any one of the columns is arranged vertically; A support seat horizontally arranged on the pair of columns; A first support mechanism, which includes: A first support rod vertically arranged on the support seat; A first arc-shaped plate arranged at the upper end of the first support rod and recessed towards the first support rod; A first support plate arranged above the first arc-shaped plate, the first support plate is made of a flexible material and is connected to the first arc-shaped plate through a first elastic member; A pair of second support mechanisms symmetrically arranged on both sides of the first support rod transversely, and any one of the second support mechanisms includes: A second support rod, the lower end of which is slidably connected to the top surface of the support seat transversely, and the upper end extends obliquely upward in a direction away from the first support rod; A second arc-shaped plate arranged at the upper end of the second support rod and recessed towards the second support rod; A pair of second support plates arranged at intervals longitudinally above the second arc-shaped plate, any one of the second support plates is made of a flexible material and is connected to the second arc-shaped plate through a second elastic member; A pair of third support mechanisms, one third support mechanism is correspondingly arranged between one second support mechanism and the first support mechanism; any one of the third support mechanisms includes: A third arc-shaped plate, one end of which is hinged to the first arc-shaped plate, and the other end is slidably connected to the top surface of the corresponding second arc-shaped plate, and the third arc-shaped plate is made of a flexible material; A third support plate arranged above the third arc-shaped plate and located between the pair of second support plates, the third support plate is made of a flexible material and is connected to the third arc-shaped plate through a third elastic member; Also includes a pair of support platforms, both of which are arranged between the two columns and the support seat, one support platform is correspondingly arranged for one column, the bottom of any one of the support platforms is connected to the upper end of the corresponding column, and the top is slidably connected to the support seat transversely; A cavity is provided inside the support seat, and a pair of first through holes communicating with the cavity are provided on the top surface of the support seat. The pair of first through holes are arranged at intervals transversely on both sides of the first support rod, and any one of the first through holes extends transversely, and one first through hole is correspondingly arranged for one second support rod; a pair of second through holes communicating with the cavity are provided on the bottom surface of the support seat, and the pair of second through holes correspond to the pair of first through holes one by one; the support device for tunnel construction further includes: A screw rod rotatably arranged in the cavity and parallel to the transverse direction; the screw rod includes two parts with opposite thread directions along its length direction; A pair of sliders, one slider is respectively threadedly sleeved and rotated on the two parts of the screw rod, any one of the sliders is slidably connected to the cavity transversely, the upper end of any one of the sliders passes through the corresponding first through hole and is connected to the lower end of the corresponding second support rod, and the lower end of any one of the sliders passes through the corresponding second through hole and is slidably connected to the corresponding support platform transversely; It further includes an airbag, one end of which is sealingly connected to one of the support platforms, and the other end sequentially passes between the second arc plate and the second support plate of one of the second support mechanisms, between the third arc plate and the third support plate of one of the third support mechanisms, between the first arc plate and the first support plate of the first support mechanism, between the third arc plate and the third support plate of the other third support mechanism, between the second arc plate and the second support plate of the other second support mechanism, and then is sealingly connected to the other support platform through a pressing mechanism; the airbag is made of rubber material.

2. The tunnel construction support device according to claim 1, wherein, for the first support mechanism, the first elastic member includes two first spring groups arranged at intervals along the longitudinal direction on both sides of the airbag, and any one of the first spring groups includes a plurality of first springs arranged at equal intervals along the circumference of the first arc plate; for any one of the second support mechanisms, any one of the second elastic members includes a plurality of second springs arranged at equal intervals along the circumference of the second arc plate, and the plurality of second springs are located outside the airbag; for any one of the third support mechanisms, the third elastic member includes two third spring groups arranged at intervals along the longitudinal direction on both sides of the airbag, and any one of the third spring groups includes a plurality of third springs arranged at equal intervals along the circumference of the third arc plate.

3. The tunnel construction support device according to claim 2, wherein, it further includes a reel, which is rotatably arranged on the bottom surface of the other support platform and is parallel to the longitudinal direction, and the other end of the airbag is wound around the reel.

4. The tunnel construction support device according to claim 2, wherein, a groove is provided on one of the lateral sides of the other support platform, and the groove runs through the other support platform longitudinally; the pressing mechanism includes: a pressing block, which is arranged corresponding to the groove and is located outside the airbag; a pair of cylinders, which are symmetrically arranged on two longitudinal sides of the other support platform, and the free end of the piston rod of any one of the cylinders extends transversely away from the other support platform and is connected to the pressing block.

5. The tunnel construction support device according to claim 2, wherein, for the first support mechanism, a first partition is correspondingly arranged between any one of the first spring groups and the airbag, and any one of the first partitions is vertically arranged on the top surface of the first arc plate and does not interfere with the first support plate; for any one of the second support mechanisms, a second partition is correspondingly arranged between the plurality of second springs and the airbag, and any one of the second partitions is vertically arranged on the top surface of the second arc plate and does not interfere with any one of the second support plates and any one of the third arc plates; for any one of the third support plates, a third partition group is correspondingly arranged between any one of the third spring groups and the airbag, and any one of the third partition groups includes a plurality of third partitions arranged at equal intervals along the circumference of the third arc plate, and any one of the third partitions is vertically arranged on the top surface of the third arc plate and does not interfere with any one of the third support plates.

6. The tunnel construction support device according to claim 1, wherein, Any column includes a first vertical rod and a first sleeve. The first sleeve is sleeved on the upper end of the first vertical rod and is slidably connected to the first vertical rod in the vertical direction. A traveling mechanism is provided at the lower end of the first vertical rod; the supporting device for tunnel construction further includes: A second vertical rod, which is vertically arranged below the support seat and is located between a pair of first vertical rods, and a thread is provided on the second vertical rod; A second sleeve, which is rotationally sleeved on the upper end of the second vertical rod by a thread, and the upper end of the second sleeve is connected to the support seat; A pair of telescopic rods, which are symmetrically arranged on both sides of the second sleeve. Any telescopic rod is parallel to the horizontal direction, and both ends of any telescopic rod are respectively connected to the second sleeve and the first sleeve corresponding to it; A bottom plate, which is horizontally arranged at the lower end of the second vertical rod, and the second vertical rod is rotatably connected to the bottom plate; A pair of fixed rods, which are symmetrically arranged on both sides of the second vertical rod. Any fixed rod is vertically arranged and is slidably connected to the bottom plate in the vertical direction, and the lower end of any fixed rod is conical.

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