A tunnel support structure for layered surrounding rock tunnel construction

Abstract

The present application belongs to the technical field of tunnel construction auxiliary equipment, and particularly relates to a tunnel support structure for layered surrounding rock tunnel construction, which comprises a mobile base, a fixed push rod, a movable push rod, a hydraulic control pump and a transverse adjusting mechanism are installed on the upper side of the mobile base; a first support seat is fixedly supported at the top end of the fixed push rod, a second support seat is fixedly supported at the top end of the movable push rod, a chain plate support belt is commonly sleeved on the outer side of the support rollers of the first and second support seats, a hydraulic seat is installed between the inner side hinge seats, a plurality of hydraulic subseats are installed on the upper side of the hydraulic seat, a support push plate is installed at the movable end of the hydraulic subseat, and the hydraulic seat is connected with the hydraulic control pump through a hydraulic pipeline. When supporting, the base support system and the pressurized support system are adjusted to make the chain plate support belt closely adhere to the top surface to be supported, and when the support position needs to be adjusted, the chain plate support belt is separated from the top surface to be supported, so that the support position can be quickly adjusted without frequent installation and disassembly.

Description

Technical Field

[0001] This invention belongs to the technical field of tunnel construction auxiliary equipment, specifically relating to a tunnel support structure for layered surrounding rock tunnel construction. Background Technology

[0002] During the construction of roads, bridges, and tunnels, collapses are a common occurrence. Collapses not only render construction equipment inoperable but also pose significant dangers to workers. Therefore, it is necessary to use support frames to reinforce the tunnel interior during construction to ensure normal construction and operations. However, existing tunnel support structures for layered rock tunnels are inconvenient to move, and their installation and dismantling are cumbersome, resulting in limited practicality.

[0003] The patent specification with publication number CN216811746U discloses a tunnel support structure for construction of layered surrounding rock tunnels, including two support bases. Support rollers are installed at both ends of the bottom of the two support bases, and multiple fixing plates are connected to the upper end face of the two support bases. This tunnel support structure for construction of layered surrounding rock tunnels facilitates the movement of the structure by setting support rollers, improves the stability of the device by setting a first fixed anchor, a first fixed hole, a second fixed anchor, and a second fixed hole, facilitates the installation and disassembly of the protective side plate by setting a first connecting frame and a second connecting frame, prevents the protective side plate from being subjected to excessive pressure when water seeps into the tunnel wall by setting water permeable holes, facilitates the installation and disassembly of the protective top plate by setting a support top seat, a slide groove, a fixing seat, a second connecting plate, and a connecting nut, and facilitates the connection of multiple support bases end to end by setting connecting holes, a first connecting plate, connecting bolts, and a U-shaped frame.

[0004] However, this type of tunnel support structure for layered rock tunnel construction still has shortcomings. First, it still requires a large number of components, resulting in a significant workload for installation and disassembly. Second, although it is equipped with a moving mechanism, it cannot move while providing support; the bottom support components must be disassembled for movement, making it inconvenient to move. Therefore, it is necessary to optimize and improve the existing tunnel support structure for layered rock tunnel construction. Summary of the Invention

[0005] The purpose of this invention is to overcome the above-mentioned problems existing in the conventional technology and to provide a tunnel support structure for the construction of layered surrounding rock tunnels.

[0006] To achieve the above-mentioned technical objectives and effects, the present invention is implemented through the following technical solution:

[0007] A tunnel support structure for layered surrounding rock tunnel construction includes a movable base. A fixed push rod is mounted at one end of the upper side of the movable base, and a movable push rod with a guide wheel at the bottom is mounted at the other end. A hydraulic control pump and a lateral adjustment mechanism for driving the lateral displacement of the movable push rod are mounted on the upper side of the movable base. A first support seat is fixedly supported at the top of the fixed push rod, and a second support seat is fixedly supported at the top of the movable push rod. Several support rollers are mounted on the outer sides of each of the first and second support seats, and hinge seats are mounted on their inner sides. A chain plate support belt is sleeved on the outer sides of the support rollers of the first and second support seats. A hydraulic seat is installed between the hinge seats of the first and second support seats. Several hydraulic sub-seats are mounted on the upper side of the hydraulic seat. A support push plate is mounted on the movable end of each hydraulic sub-seat. The hydraulic seat is connected to the hydraulic control pump via hydraulic pipelines.

[0008] Furthermore, in the tunnel support structure for the construction of layered surrounding rock tunnels described above, the upper side of the movable base is provided with a guide rail groove that cooperates with the guide rail wheel at the bottom of the movable push rod.

[0009] Furthermore, in the aforementioned tunnel support structure for layered surrounding rock tunnel construction, the lateral adjustment mechanism includes a first vertical plate, a second vertical plate, a drive motor, a lead screw, a connecting seat, and a guide rod fixed on a movable base. The first vertical plate, the second vertical plate, and the drive motor are fixed on the upper side of the movable base. A lead screw is inserted and supported in the first vertical plate, and a guide rod is inserted and supported in the second vertical plate. The axes of the lead screw and the guide rod are parallel. The connecting seat and the guide rod are fixed to the lower part of the movable push rod. A lead screw groove that mates with the lead screw is provided in the connecting seat. One end of the lead screw is fixedly connected to the output shaft of the drive motor, and the other end is screwed into the lead screw groove of the connecting seat.

[0010] Furthermore, in the tunnel support structure for the construction of layered surrounding rock tunnels, the first support base and the second support base are semi-cylinders, and the arc surface of the semi-cylinders is evenly distributed with movable grooves to facilitate the rotation of the support roller shaft.

[0011] Furthermore, in the tunnel support structure for the construction of layered surrounding rock tunnels described above, the hydraulic seat is provided with ear seats at both ends to facilitate rotatable connection with the corresponding hinge seat.

[0012] Furthermore, in the tunnel support structure for the construction of layered surrounding rock tunnels described above, the hydraulic sub-seats on the upper side of the hydraulic seat are distributed in a rectangular array.

[0013] Furthermore, in the above-mentioned tunnel support structure for layered surrounding rock tunnel construction, the hydraulic seat has a main oil chamber inside, and the hydraulic branch seat includes a seat body. The seat body has a branch oil chamber that communicates with the main oil chamber. A piston plate is installed in the branch oil chamber. A movable support extending from the seat body is installed on the upper side of the piston plate. A support push plate is installed at the top of the movable support.

[0014] Furthermore, in the tunnel support structure for the construction of layered surrounding rock tunnels mentioned above, a pipeline joint communicating with the main oil chamber is provided on the outside of the hydraulic seat, and the length of the hydraulic pipeline is sufficient to meet the tension caused by the lifting and lowering of the hydraulic seat.

[0015] The beneficial effects of this invention are:

[0016] The tunnel support structure for layered surrounding rock tunnel construction provided by this invention is an integrated structure, mainly composed of a movable base, fixed push rod, movable push rod, first support seat, second support seat, support roller shaft, hinge seat, chain plate support belt, hydraulic seat, hydraulic sub-seat, support push plate, hydraulic pipeline, and hydraulic control pump. The basic support system, consisting of the fixed push rod, movable push rod, first support seat, second support seat, and support roller shaft, provides basic support for the chain plate support belt. The pressure support system, consisting of the hydraulic seat, hydraulic sub-seat, support push plate, hydraulic pipeline, and hydraulic control pump, provides pressure support for the chain plate support belt. During support, the basic support system and pressure support system are adjusted to ensure the chain plate support belt is tightly attached to the surface to be supported. When the support position needs to be adjusted, the basic support system and pressure support system can be quickly adjusted to separate the chain plate support belt from the surface to be supported. This, combined with the movable base, allows for easy adjustment of the support position, eliminating the need for frequent installation and disassembly.

[0017] Of course, any product implementing this invention does not necessarily need to achieve all of the above advantages at the same time. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the lateral adjustment mechanism in this invention;

[0021] Figure 3 This is a schematic diagram of the chain plate support belt and its internal components in this invention;

[0022] Figure 4 This is a schematic diagram of the external structure of the hydraulic base and hydraulic sub-base in this invention;

[0023] Figure 5 This is a schematic diagram of the internal structure of the hydraulic base and hydraulic sub-base in this invention;

[0024] Figure 6 for Figure 5 Enlarged schematic diagram of a partial local structure;

[0025] In the attached diagram, the component numbers are as follows:

[0026] 1-Moving base, 2-Fixed push rod, 3-Modible push rod, 4-First support seat, 5-Second support seat, 6-Support roller, 7-Hinged seat, 701-First upright plate, 702-Second upright plate, 703-Drive motor, 704-Screw screw, 705-Connecting seat, 706-Guide rod, 8-Chain plate support belt, 9-Hydraulic seat, 901-Main oil chamber, 10-Hydraulic branch seat, 101-Seat body, 102-Branch oil chamber, 103-Piston plate, 104-Modible support column, 11-Support push plate, 12-Hydraulic pipeline, 13-Hydraulic control pump, 14-Guide rail groove. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] Please see Figures 1-6 As shown, this embodiment is a tunnel support structure for layered surrounding rock tunnel construction, including a movable base 1. A fixed push rod 2 is installed at one end of the upper side of the movable base 1, and a movable push rod 3 with a guide wheel 6 at the bottom is installed at the other end. A hydraulic control pump 13 and a lateral adjustment mechanism 7 for driving the lateral displacement of the movable push rod 3 are installed on the upper side of the movable base 1. A first support seat 4 is fixedly supported at the top of the fixed push rod 2, and a second support seat 5 is fixedly supported at the top of the movable push rod 3. Several support rollers 6 are installed on the outer side of the first support seat 4 and the second support seat 5, and a hinge seat 7 is installed on the inner side. A chain plate support belt 8 is sleeved on the outer side of the support rollers 6 of the first support seat 4 and the second support seat 5. A hydraulic seat 9 is installed between the hinge seat 7 of the first support seat 4 and the second support seat 5. Several hydraulic sub-seats 10 are installed on the upper side of the hydraulic seat 9. A support push plate 11 is installed at the movable end of the hydraulic sub-seat 10. The hydraulic seat 9 is connected to the hydraulic control pump 13 through a hydraulic pipeline 12.

[0029] In this embodiment, the upper side of the movable base 1 is provided with a guide rail groove 14 that cooperates with the bottom guide rail wheel 6 of the movable push rod 3.

[0030] In this embodiment, the lateral adjustment mechanism 7 includes a first upright plate 701, a second upright plate 702, a drive motor 703, a lead screw 704, a connecting seat 705, and a guide rod 706, all fixed to the movable base. The first upright plate 701, the second upright plate 702, and the drive motor 703 are fixed to the upper side of the movable base 1. The lead screw 704 is supported through the first upright plate 701, and the guide rod 706 is supported through the second upright plate 702. The axes of the lead screw 704 and the guide rod 706 are parallel. The connecting seat 705 and the guide rod 706 are fixed to the lower part of the movable push rod 3. The connecting seat 705 has a lead screw groove that mates with the lead screw 704. One end of the lead screw 704 is fixedly connected to the output shaft of the drive motor 703, and the other end is screwed into the lead screw groove of the connecting seat 705.

[0031] In this embodiment, the first support base 4 and the second support base 5 are semi-cylinders, and the arc surface of the semi-cylinders is evenly distributed with movable grooves to facilitate the rotation of the support roller shaft 6.

[0032] In this embodiment, the hydraulic base 9 is provided with lugs at both ends to facilitate rotatable connection with the corresponding hinged base 7. The hydraulic sub-bases 10 on the upper side of the hydraulic base 9 are distributed in a rectangular array.

[0033] In this embodiment, the hydraulic base 9 has a main oil chamber 901 inside, and the hydraulic branch base 10 includes a base body 101. The base body 101 has a branch oil chamber 102 that communicates with the main oil chamber 901 inside. A piston plate 103 is installed in the branch oil chamber 103. A movable support column 104 extending from the base body 101 is installed on the upper side of the piston plate 103. A support push plate 11 is installed at the top of the movable support column 104.

[0034] In this embodiment, the outer side of the hydraulic seat 9 is provided with a pipe joint that communicates with the main oil chamber 901, and the length of the hydraulic pipe 12 is sufficient to accommodate the stretching caused by the lifting and lowering of the hydraulic seat 9.

[0035] A specific application of this embodiment is as follows: The tunnel support structure for layered surrounding rock tunnel construction provided in this embodiment is an integrated structure, mainly composed of a movable base 1, a fixed push rod 2, a movable push rod 3, a first support seat 4, a second support seat 5, a support roller shaft 6, a hinge seat 7, a chain plate support belt 8, a hydraulic seat 9, a hydraulic sub-seat 10, a support push plate 11, a hydraulic pipeline 12, and a hydraulic control pump 13. The basic support system composed of the fixed push rod 2, the movable push rod 3, the first support seat 4, the second support seat 5, and the support roller shaft 6 provides a foundation for the chain plate support belt 8. The support system utilizes a pressure support system consisting of a hydraulic base 9, a hydraulic sub-base 10, a support push plate 11, a hydraulic pipeline 12, and a hydraulic control pump 13 to provide pressure support for the chain plate support belt 8. When support is being provided, the chain plate support belt 8 is made to fit tightly against the top surface to be supported by adjusting the basic support system and the pressure support system. When the support position needs to be adjusted, the basic support system and the pressure support system can be quickly adjusted to separate the chain plate support belt 8 from the top surface to be supported. In this way, the adjustment of the support position can be completed with the help of the movable base 1. The operation is convenient and does not require frequent installation and disassembly.

[0036] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to specific implementations. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A tunnel support structure for construction of layered surrounding rock tunnels, comprising a movable base, characterized in that, A fixed push rod is installed at one end of the upper side of the movable base, and a movable push rod with a guide wheel at the bottom is installed at the other end. A hydraulic control pump and a lateral adjustment mechanism for driving the lateral displacement of the movable push rod are installed on the upper side of the movable base. A first support seat is fixedly supported at the top of the fixed push rod, and a second support seat is fixedly supported at the top of the movable push rod. Several support rollers are installed on the outer side of the first and second support seats, and a hinge seat is installed on the inner side. A chain plate support belt is sleeved on the outer side of the support rollers of the first and second support seats. A hydraulic seat is installed between the hinge seats of the first and second support seats. Several hydraulic sub-seats are installed on the upper side of the hydraulic seat. A support push plate is installed at the movable end of the hydraulic sub-seat. The hydraulic seat is connected to the hydraulic control pump through a hydraulic pipeline. The upper side of the movable base is provided with a guide rail groove that cooperates with the bottom guide rail wheel of the movable push rod; The lateral adjustment mechanism includes a first upright plate, a second upright plate, a drive motor, a lead screw, a connecting seat, and a guide rod, all fixed to a movable base. The first upright plate, the second upright plate, and the drive motor are fixed to the upper side of the movable base. A lead screw is inserted through and supported in the first upright plate, and a guide rod is inserted through and supported in the second upright plate. The axes of the lead screw and the guide rod are parallel. The connecting seat and the guide rod are fixed to the lower part of the movable push rod. A lead screw groove that mates with the lead screw is provided in the connecting seat. One end of the lead screw is fixedly connected to the output shaft of the drive motor, and the other end is screwed into the lead screw groove of the connecting seat. The first support base and the second support base are semi-cylinders, and the arc surface of the semi-cylinders is evenly distributed with movable grooves to facilitate the rotation of the support roller shaft. The hydraulic base has ear seats at both ends for easy rotatable connection with corresponding hinge seats; the hydraulic sub-seats on the upper side of the hydraulic base are arranged in a rectangular array; the hydraulic base has a main oil chamber inside, and the hydraulic sub-seat includes a base body. The base body has a branch oil chamber that communicates with the main oil chamber. A piston plate is installed in the branch oil chamber. A movable support extending from the base body is installed on the upper side of the piston plate. A support push plate is installed at the top of the movable support.

2. The tunnel support structure for layered surrounding rock tunnel construction according to claim 1, characterized in that: The hydraulic seat is provided with a pipe joint on the outside that communicates with the main oil chamber, and the length of the hydraulic pipe is sufficient to accommodate the stretching caused by the lifting and lowering of the hydraulic seat.

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