Steel arch for temporarily supporting soft rock

Abstract

The utility model belongs to the technical field of tunnel construction, and discloses a soft rock temporary support steel arch which comprises a supporting mechanism, the supporting mechanism comprises a plurality of first rotating plates, the first rotating plates are rotationally connected with second rotating plates, and the first rotating plates, sliding blocks and other structures are arranged to be matched, so that the soft rock temporary support steel arch is formed. The supporting mechanism is placed on the steel arch frame to form a shielding layer, and the sliding blocks are slid to adjust the angles and positions of the first rotating plates and the second rotating plates so as to adapt to pits or gaps of different shapes and sizes in the soft rock layer and support the pits or gaps, tight attachment is ensured, and the supporting mechanism is convenient to use. The adaptability and universality of a supporting structure are improved, the overall stability of a supporting system is improved, a shielding layer is formed, gravel or rock debris is prevented from falling, a safety barrier is provided for operators and equipment below, and the accident risk is reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of tunnel construction technology, and specifically relates to a steel arch support for temporary support of soft rock. BACKGROUND

[0002] Engineering soft rock refers to an engineering rock mass capable of producing significant plastic deformation under engineering force. Soft rock is poor in stability and prone to collapse. Traditional support methods such as wooden piles and concrete are difficult to keep up with the excavation progress, and are often insufficient under complex geological conditions. Therefore, if soft rock strata are encountered during tunnel construction, it is very troublesome to deal with them, and temporary support is basically required.

[0003] Publication No. CN217028939U discloses a steel arch support for temporary support of soft rock, belonging to the field of tunnel construction technology, comprising a plurality of standard sections, which are detachably connected to form an arch-shaped structure capable of being supported on the inner side of the rock wall of the tunnel. The end of the standard section is provided with a flange plate for connecting with the adjacent standard section, and the adjacent standard sections are connected by flange connection bolts passing through the flange plate. The standard section is an I-steel structure, and a connecting rod is further provided between the adjacent standard sections. The flange plate has a connecting rod hole corresponding to at least one side of the web of the I-steel structure for the connecting rod to pass through. Boltholes are provided on both ends of the connecting rod and the web of the I-steel structure, and the two ends of the connecting rod are connected to the web of the adjacent standard section by connecting rod fastening bolts passing through the boltholes. The utility model can be quickly installed, connected and disassembled, can reduce the excavation cost, and will not affect the subsequent process.

[0004] In the above-mentioned scheme, the device only supports the soft rock layer by the steel arch support, the supporting area is small, and the cracks and recesses of the soft rock layer cannot be effectively supported. At the same time, the gravel or rock debris in the recess is easy to fall off and poses a safety hazard to the workers and equipment below, therefore we propose a steel arch support for temporary support of soft rock. UTILITY MODEL CONTENTS

[0005] To solve the problem of supporting the soft rock layer only by the steel arch support in the above-mentioned background technology, the supporting area is small, and the cracks and recesses of the soft rock layer cannot be effectively supported. At the same time, the gravel or rock debris in the recess is easy to fall off and poses a safety hazard to the workers and equipment below, the utility model provides a steel arch support for temporary support of soft rock.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a steel arch support for temporary support of soft rock, comprising a supporting mechanism, the supporting mechanism is arranged in the inside of the main body mechanism, the inside of the main body mechanism is provided with a fixing mechanism, the fixing mechanism is located below the supporting mechanism;

[0007] The support mechanism comprises a plurality of first rotating plates, the second rotating plate is rotatably connected to the first rotating plate, the first rotating plate and the second rotating plate are rotatably connected to the shaft at the end away from each other, the first rotating plate and the second rotating plate are a group divided into a plurality of groups, the second rotating plate in each group is rotatably connected to the first rotating plate of the adjacent group, the second rotating plate in each group is elastically connected to the first rotating plate of the adjacent group through the elastic pad, the both ends of the shaft are fixedly connected with the sliding block, the side of the sliding block away from the shaft is fixedly connected with the clamping groove, the bottom of the sliding block is provided with the sliding rod, the number of the shaft is a plurality, and the first rotating plate and the second rotating plate are located between the two sliding blocks.

[0008] Preferably, the main body mechanism comprises two steel arches, the top of the steel arch is provided with a support groove, the side of the inner wall of the support groove is provided with a first sliding groove, the bottom of the inner wall of the first sliding groove is provided with a plurality of second sliding grooves, the lower side of the inner wall of the second sliding groove is provided with a sealing groove, and the side of the sealing groove is provided with a third sliding groove.

[0009] Preferably, the shapes of the support groove and the first sliding groove are arc-shaped, the third sliding groove is located on the side of the sealing groove away from the support groove, the first sliding groove penetrates the steel arch, and the shape of the third sliding groove is arc-shaped.

[0010] Preferably, the first rotating plate and the second rotating plate are located between the two steel arches, the bottoms of the plurality of groups of first rotating plates and second rotating plates are slidably connected with the inner wall of the support groove, the sliding block is slidably connected with the first sliding groove, the size of the sliding rod is matched with the size of the second sliding groove, the clamping groove is located in the first sliding groove, and the number of the second sliding grooves is twice the number of the sliding blocks.

[0011] Preferably, the fixing mechanism comprises a clamping block, the bottom of the clamping block is fixedly connected with a piston rod, the bottom of the piston rod is fixedly connected with a first spring, the lower side of the piston rod is provided with a clamping plate, the end of the clamping plate away from the piston rod is fixedly connected with a connecting plate, the side of the connecting plate away from the clamping plate is fixedly connected with a plurality of second springs, the side of the connecting plate away from the clamping plate is fixedly connected with a handle, and the both sides of the clamping block are provided with inclined grooves.

[0012] Preferably, the shape of the connecting plate is arc-shaped, the size of the connecting plate is matched with the size of the third sliding groove, the number of the clamping blocks is the same as the number of the second sliding grooves, the clamping block is slidably connected with the second sliding groove, the piston rod extends to the inside of the sealing groove through the inner wall of the clamping block, the bottom of the piston rod is elastically connected with the inner wall of the sealing groove through the first spring, the connecting plate is slidably connected with the third sliding groove, and the connecting plate is fixedly connected with a plurality of clamping plates.

[0013] Preferably, the plurality of clamping plates extend through the inner wall of the third sliding groove to the inside of the sealing groove, the connecting plate is elastically connected between the second spring and the inner wall of the third sliding groove, the handle extends through the inner wall of the third sliding groove to the outside of the steel arch, the clamping block extends through the inner wall of the second sliding groove to the inside of the first sliding groove, the size of the clamping block is matched with the size of the sliding rod, and the clamping block is clamped between the sliding rod.

[0014] Compared with the prior art, the utility model has the advantages that:

[0015] The utility model discloses a first rotating plate and sliding block structure cooperation are further facilitated to the gap of soft rock stratum is supported, and the support mechanism is placed on the steel arch and forms the shelter layer, and the sliding sliding block adjusts the angle and position of several groups of first rotating plate and second rotating plate, to adapt to the recess or gap of different shape and size in soft rock stratum and support, ensure close fitting, improve the adaptability and universality of support structure, improve the overall stability of support system, and form the shelter layer, prevent the gravel or rock debris from falling, provide the safety barrier for the lower operating personnel and equipment, reduce the accident risk. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the utility model structure schematic diagram;

[0017] Figure 2 It is the utility model main body mechanism cross section structure schematic diagram;

[0018] Figure 3 It is the utility model Figure 2 It is the utility model A place amplification structure schematic diagram;

[0019] Figure 4 It is the utility model support mechanism cross section structure schematic diagram;

[0020] Figure 5 It is the utility model fixed mechanism three -dimensional structure schematic diagram.

[0021] In the drawing: 1, support mechanism;101, first rotating plate;102, second rotating plate;103, elastic pad;104, pivot;105, sliding block;106, clamping groove;107, sliding rod;2, main body mechanism;201, steel arch;202, support groove;203, first sliding groove;204, second sliding groove;205, sealing groove;206, third sliding groove;3, fixed mechanism;301, clamping block;302, piston rod;303, first spring;304, clamping plate;305, connecting plate;306, second spring;307, handle;308, inclined slot. DETAILED DESCRIPTION

[0022] Clearly, the described embodiments are merely a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0023] As shown in Figures 1 to 5 The utility model provides a kind of steel arch for soft rock temporary support, including support mechanism 1, support mechanism 1 is arranged in the inside of main body mechanism 2, and fixed mechanism 3 is provided in the inside of main body mechanism 2, and fixed mechanism 3 is below support mechanism 1;

[0024] Support mechanism 1 includes several first rotating plates 101, second rotating plate 102 is rotatably connected on first rotating plate 101, and the end of mutual separation of first rotating plate 101 and second rotating plate 102 is rotatably connected with shaft 104, and first rotating plate 101 and second rotating plate 102 are divided into several groups, and the second rotating plate 102 in each group is rotatably connected with the first rotating plate 101 of adjacent group, and the second rotating plate 102 in each group is elastically connected with the first rotating plate 101 of adjacent group by elastic pad 103, and the both ends of shaft 104 are fixedly connected with sliding block 105, and the side of sliding block 105 away from shaft 104 is fixedly connected with clamping groove 106, and the bottom of sliding block 105 is provided with sliding rod 107, and the number of shaft 104 is several, and first rotating plate 101 and second rotating plate 102 are located between two sliding blocks 105.

[0025] Main body mechanism 2 includes two steel arches 201, and support groove 202 is provided at the top of steel arch 201, first sliding groove 203 is provided in the side of inner wall of support groove 202, a plurality of second sliding grooves 204 are provided in the bottom of inner wall of first sliding groove 203, sealing groove 205 is provided below the inner wall of second sliding groove 204, third sliding groove 206 is provided in the side of sealing groove 205, and the shape of support groove 202 and first sliding groove 203 is arched, and third sliding groove 206 is located in the side of sealing groove 205 away from support groove 202, and first sliding groove 203 penetrates steel arch 201, and the shape of third sliding groove 206 is arched.

[0026] First rotating plate 101 and second rotating plate 102 are located between two steel arches 201, and the bottom of several groups of first rotating plate 101 and second rotating plate 102 is slidably connected with the inner wall of support groove 202, sliding block 105 is slidably connected with first sliding groove 203, the size of sliding rod 107 is adapted to the size of second sliding groove 204, clamping groove 106 is located in the inside of first sliding groove 203, and the number of second sliding groove 204 is twice the number of sliding block 105.

[0027] With the above scheme: by setting the first rotating plate 101 and the sliding block 105 and other structure cooperation, and then facilitate the support of the soft rock gap, the support mechanism 1 is placed in the support groove 202 on the steel arch 201, the bottom of the first rotating plate 101 and the second rotating plate 102 is in contact with the support groove 202, forming a barrier layer, and the sliding block 105 is located in the first sliding groove 203, and the sliding block 105 at both ends of the barrier layer is slid downward, so that the sliding block 105 extrudes the inclined groove 308 on the clamping block 301, and the clamping block 301 is lowered to the second sliding groove 204 by extruding the inclined groove 308, so that the piston rod 302 extrudes the first spring 303, when the clamping block 301 is aligned with the sliding rod 107, the clamping block 301 will be raised and clamped with the sliding rod 107 under the action of the elastic force of the first spring 303, and the both ends of the support mechanism 1 are fixed, then several sliding blocks 105 are slid in the first spring 303 respectively, the angle and position of the first rotating plate 101 and the second rotating plate 102 are adjusted to adapt to the different shapes and sizes of the recess or gap in the soft rock and support it, ensure close fit, improve the adaptability and versatility of the support structure, improve the overall stability of the support system, and form a barrier layer to prevent falling of gravel or rock debris, provide a safety barrier for the personnel and equipment below, reduce the risk of accidents, and the elastic pad 103 between the second rotating plate 102 in each group and the first rotating plate 101 of the adjacent group can prevent the abrasion of the rotating shaft 104 caused by the gravel.

[0028] As shown in Figure 1 , Figure 3 and Figure 5 , the fixing mechanism 3 comprises a clamping block 301, the bottom of the clamping block 301 is fixedly connected with a piston rod 302, the bottom of the piston rod 302 is fixedly connected with a first spring 303, the lower side of the piston rod 302 is provided with a clamping plate 304, the end away from the piston rod 302 of the clamping plate 304 is fixedly connected with a connecting plate 305, the side away from the clamping plate 304 of the connecting plate 305 is fixedly connected with a plurality of second springs 306, the side away from the clamping plate 304 of the connecting plate 305 is fixedly connected with a handle 307, and the both sides of the clamping block 301 are provided with inclined grooves 308.

[0029] The outer shape of the connecting plate 305 is arched, the size of the connecting plate 305 is matched with the size of the third sliding groove 206, the number of the clamping blocks 301 is same as the number of the second sliding grooves 204, the clamping blocks 301 and the second sliding grooves 204 are in sliding connection, the piston rod 302 extends to the inside of the sealing groove 205 through the inner wall of the clamping block 301, the bottom of the piston rod 302 is elastically connected between the first spring 303 and the inner wall of the sealing groove 205, the connecting plate 305 and the third sliding groove 206 are in sliding connection, a plurality of clamping plates 304 are fixedly connected on the connecting plate 305, the plurality of clamping plates 304 extend to the inside of the sealing groove 205 through the inner wall of the third sliding groove 206, the connecting plate 305 is elastically connected between the second spring 306 and the inner wall of the third sliding groove 206, the handle 307 extends to the outside of the steel arch support 201 through the inner wall of the third sliding groove 206, the clamping block 301 extends to the inside of the first sliding groove 203 through the inner wall of the second sliding groove 204, the size of the clamping block 301 is matched with the size of the sliding rod 107, and the clamping block 301 is clamped with the sliding rod 107.

[0030] By adopting the above scheme, the bottom of the supporting mechanism 1 is supported by the steel arch support 201, a more complete supporting system is formed, the contact area between the device and the soft rock layer is increased, the pressure of the device on the soft rock layer is reduced, the overall stability is improved, and the overall bearing capacity and anti-deformation capacity are enhanced.

[0031] The working principle and use process of the utility model are as follows: firstly, the two steel arch supports 201 are fixed at the soft rock layer position in the tunnel, and the handle 307 is pulled away from each other, the clamping plate 304 is driven by the connecting plate 305 to move out of the inside of the sealing groove 205, the abutment of the bottom of the piston rod 302 is released, then the supporting mechanism 1 is placed in the supporting groove 202 on the steel arch support 201, the bottoms of the plurality of groups of first rotating plates 101 and second rotating plates 102 abut with the supporting groove 202, a shielding layer is formed, the sliding block 105 is located in the inside of the first sliding groove 203, and the sliding blocks 105 located at both ends of the shielding layer are slid downward, the sliding block 105 extrudes the inclined groove 308 on the clamping block 301, the clamping block 301 is lowered to the inside of the second sliding groove 204 through extruding the inclined groove 308, the piston rod 302 extrudes the first spring 303, when the clamping block 301 is aligned with the sliding rod 107, the clamping block 301 is raised and clamped with the sliding rod 107 under the action of the elastic force of the first spring 303, the both ends of the supporting mechanism 1 are fixed, then a plurality of sliding blocks 105 are slid in the first spring 303 respectively, the angles and positions of the plurality of groups of first rotating plates 101 and second rotating plates 102 are adjusted to adapt to different shapes and sizes of recesses or gaps in the soft rock layer and support the recesses or gaps.

[0032] Finally, the handle 307 is pushed towards the direction of the piston rod 302, and the clamping plate 304 is moved to the lower side of the piston rod 302 under the action of the second spring 306 and the pushing force, so as to block the piston rod 302 and prevent the piston rod 302 from descending, thereby fixing the position of the sliding block 105 by the clamping block 301.

[0033] It should be noted that the relational terms herein such as first and second and the like are used solely to distinguish one from another entity or action without necessarily requiring or implying that these entities or actions are in any way mutually exclusive or directional.

[0034] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A steel arch for temporary support of soft rock, comprising a support mechanism (1), characterised in that: The support mechanism (1) is arranged in the interior of the main body mechanism (2), and the interior of the main body mechanism (2) is provided with a fixing mechanism (3) located below the support mechanism (1); The support mechanism (1) comprises a plurality of first rotating plates (101), the first rotating plate (101) is rotatably connected with a second rotating plate (102), the first rotating plate (101) and the second rotating plate (102) are rotatably connected with a rotating shaft (104) at the ends away from each other, the first rotating plate (101) and the second rotating plate (102) are a group divided into a plurality of groups, the second rotating plate (102) in each group is rotatably connected with the first rotating plate (101) of an adjacent group, the second rotating plate (102) in each group is elastically connected with the first rotating plate (101) of an adjacent group through an elastic pad (103), both ends of the rotating shaft (104) are fixedly connected with a sliding block (105), the side of the sliding block (105) away from the rotating shaft (104) is fixedly connected with a clamping groove (106), and the bottom of the sliding block (105) is provided with a sliding rod (107); the number of the rotating shaft (104) is several, and the first rotating plate (101) and the second rotating plate (102) are located between the two sliding blocks (105).

2. The soft rock temporary support steel arch of claim 1, wherein: The main body mechanism (2) comprises two steel arch supports (201), the top of the steel arch support (201) is provided with a support groove (202), the side of the inner wall of the support groove (202) is provided with a first sliding groove (203), a plurality of second sliding grooves (204) are formed in the bottom of the inner wall of the first sliding groove (203), a sealing groove (205) is formed below the inner wall of the second sliding groove (204), and the side of the sealing groove (205) is provided with a third sliding groove (206).

3. The soft rock temporary support steel arch of claim 2, wherein: The shapes of the support groove (202) and the first sliding groove (203) are both arc-shaped, the third sliding groove (206) is located on the side of the sealing groove (205) away from the support groove (202), and the first sliding groove (203) penetrates the steel arch support (201), and the shape of the third sliding groove (206) is arc-shaped.

4. The soft rock temporary support steel arch of claim 2, wherein: The first rotating plate (101) and the second rotating plate (102) are located between the two steel arch supports (201), the bottoms of the plurality of groups of first rotating plates (101) and second rotating plates (102) are slidably connected with the inner wall of the support groove (202), the sliding block (105) is slidably connected with the first sliding groove (203), the size of the sliding rod (107) is matched with the size of the second sliding groove (204), the clamping groove (106) is located in the first sliding groove (203), and the number of the second sliding groove (204) is twice the number of the sliding block (105).

5. The soft rock temporary support steel arch of claim 2, wherein: The fixed mechanism (3) includes a clamping block (301), the bottom of the clamping block (301) is fixedly connected with a piston rod (302), the bottom of the piston rod (302) is fixedly connected with a first spring (303), the lower portion of the piston rod (302) is provided with a clamping plate (304), one end of the clamping plate (304) away from the piston rod (302) is fixedly connected with a connecting plate (305), one side of the connecting plate (305) away from the clamping plate (304) is fixedly connected with a plurality of second springs (306), one side of the connecting plate (305) away from the clamping plate (304) is fixedly connected with a handle (307), and both sides of the clamping block (301) are provided with inclined grooves (308).

6. The soft rock temporary support steel arch of claim 5, wherein: The connecting plate (305) is arc-shaped, the size of the connecting plate (305) is matched with the size of the third sliding groove (206), the number of the clamping block (301) is the same as the number of the second sliding groove (204), the clamping block (301) is slidably connected with the second sliding groove (204), the piston rod (302) extends through the inner wall of the clamping block (301) to the inside of the sealing groove (205), the bottom of the piston rod (302) is elastically connected between the inner wall of the sealing groove (205) and the first spring (303), the connecting plate (305) is slidably connected with the third sliding groove (206), and the connecting plate (305) is fixedly connected with a plurality of clamping plates (304).

7. The soft rock temporary support steel arch of claim 5, wherein: The clamping plate (304) extends through the inner wall of the third sliding groove (206) to the inside of the sealing groove (205), the connecting plate (305) is elastically connected between the inner wall of the third sliding groove (206) and the second spring (306), the handle (307) extends through the inner wall of the third sliding groove (206) to the outside of the steel arch support (201), the clamping block (301) extends through the inner wall of the second sliding groove (204) to the inside of the first sliding groove (203), the size of the clamping block (301) is matched with the size of the sliding rod (107), and the clamping block (301) is clamped with the sliding rod (107).

Images