Quickly-mounted steel arch mounting structure for chamber support

Abstract

The utility model provides a quick-mounting type steel arch mounting structure for chamber supporting, which comprises two groups of supporting structures arranged on two sides of a chamber respectively, and each group of supporting structure comprises a positioning groove, a fixed seat, a jacking rod and a synchronous driving component; the positioning groove is formed in the bottom surface of the chamber; an alignment rod used for being inserted into the positioning groove is arranged on the fixing base in a sliding mode so as to limit movement of the fixing base in the horizontal direction. The jacking rod is slidably arranged on the fixing base, and the upper end of the jacking rod is used for driving the steel arch frame to move upwards to abut against the top face of the chamber. The synchronous driving component is arranged on the fixing base and can drive the alignment rod to move downwards to be inserted into the positioning groove and drive the jacking rod to move upwards to the steel arch to abut against the top face of the chamber in actual use. According to the quick-mounting type steel arch mounting structure for chamber supporting, the supporting structure and the steel arch can be positioned relative to the chamber at the same time, so that a chamber top structure is effectively avoided, and the mounting efficiency of the steel arch and the overall arrangement efficiency of a chamber supporting system are guaranteed.

Description

Technical Field

[0001] This application belongs to the field of tunnel construction technology, specifically relating to a quick-installation steel arch frame installation structure for tunnel support. Background Technology

[0002] A tunnel is a large, functional space artificially excavated in underground rock or soil, characterized by its large span, complex structure, and special purpose. After the tunnel is completed, the construction unit needs to support the roof to improve its structural strength and extend its service life.

[0003] In existing technologies, tunnel support typically employs a composite system consisting of anchor-sprayed structures, steel arch frames, and concrete lining. Specifically:

[0004] (a) Anchor-sprayed structure refers to a flexible support layer formed by anchor bolts and sprayed concrete;

[0005] (ii) Steel arch frame refers to a prefabricated component that can be embedded in the anchor spray layer, which can provide immediate bending resistance and control the deformation of fractured rock mass;

[0006] (iii) Concrete lining refers to cast-in-place reinforced concrete that serves as the final load-bearing layer;

[0007] When installing the steel arch frame, a support structure needs to be set between the steel arch frame and the bottom of the chamber. Usually, the construction unit will choose to fix the support structure to the bottom of the chamber first, and then place the steel arch frame between the support structure and the top of the chamber, so that the end of the steel arch frame matches the support structure.

[0008] The inventors discovered that, since the height of the supporting structure is equal to the height of the steel arch frame from the bottom of the cave, the steel arch frame can only be moved horizontally while in contact with the top of the cave to achieve its cooperation with the supporting structure. However, during the horizontal movement of the steel arch frame, the structure at the top of the cave (such as protruding lamps or rocks) can easily interfere with its movement, making it impossible to install the steel arch frame using conventional techniques, thus affecting the installation efficiency of the steel arch frame. Utility Model Content

[0009] This application provides a quick-installation steel arch frame installation structure for tunnel support, which can simultaneously position the support structure and the steel arch frame relative to the tunnel, thereby effectively avoiding the tunnel top structure, ensuring the installation efficiency of the steel arch frame, and the overall efficiency of the tunnel support system layout.

[0010] To achieve the above objectives, the technical solution adopted in this application is as follows:

[0011] A quick-installation steel arch frame installation structure for tunnel support is provided, comprising two sets of support structures respectively installed on both sides of the tunnel, each set of support structures comprising:

[0012] Positioning grooves are used to be formed on the bottom surface of the chamber;

[0013] A fixed base is provided on the bottom surface of the chamber and has an alignment rod that is slidably connected to it in the vertical direction; the alignment rod is used to insert into the positioning groove to restrict the movement of the fixed base in the horizontal direction.

[0014] A lifting rod, slidably mounted on the fixed base in the vertical direction, extends its upper end above the fixed base and abuts against the steel arch frame, thereby driving the steel arch frame upward to abut against the top surface of the chamber; and

[0015] A synchronous drive component is disposed on the fixed base and is connected to the lifting rod and the alignment rod in a transmission manner; the synchronous drive component is used to drive the alignment rod to move downward to insert into the positioning groove, and also to drive the lifting rod to move upward so that the steel arch frame moves upward to abut the top surface of the chamber.

[0016] In one possible implementation, the synchronization drive component includes:

[0017] A translational member, disposed inside the fixed base, has a degree of freedom to move toward or away from the fixed base; and

[0018] Two transmission arms are arranged side by side on the translation member in the vertical direction; one end of each transmission arm is hinged to the translation member and the other end is hinged to the fixed base, and the end of the transmission arm that is hinged to the fixed base has a degree of freedom to move relative to the fixed base in the vertical direction.

[0019] When the translational member moves toward the fixed seat, the two transmission arms swing simultaneously, so that the transmission arm on the upper side abuts against the lifting rod and drives the lifting rod to move upward to abut against the steel arch frame, and the transmission arm on the lower side abuts against the alignment rod and drives the alignment rod to move downward to insert into the positioning groove.

[0020] In one possible implementation, the fixing base has an internally hollow structure and its inner side has an open structure to form an inner cavity;

[0021] The top of the fixing base has an upper through hole communicating with the inner cavity, and the bottom of the fixing base has a lower through hole communicating with the inner cavity.

[0022] The lifting rod and the alignment rod are slidably inserted into the upper through hole and the lower through hole, respectively; the ends of the two transmission arms are embedded in the inner cavity and are respectively connected to the lifting rod and the alignment rod.

[0023] In one possible implementation, the fixing base also has two strip holes arranged side by side in the vertical direction, each of the strip holes extending in the vertical direction and communicating with the inner cavity;

[0024] The embedded end of the transmission arm has a convex shaft, which is coaxially arranged with the hinge shaft of the transmission arm, and the convex shaft is inserted into the corresponding strip hole.

[0025] In one possible implementation, the translational member can move toward the fixed seat to be embedded in the inner cavity, and when the translational member is embedded in the inner cavity, the axes of the two transmission arms are parallel to the vertical direction, and drive the lifting rod to move to the top of the steel arch frame to abut the chamber, and the alignment rod to be inserted into the positioning groove.

[0026] The mounting base also includes a sealing component; the sealing component is used to cover the opening of the inner cavity and abut against the translational member to restrict the translational member from exiting the inner cavity.

[0027] In one possible implementation, the enclosing component includes:

[0028] A docking platform is disposed on one side of the fixed base, with a portion extending into the inner side of the fixed base, and a groove is formed on the upper side of the extended portion of the docking platform; and

[0029] A gate is hinged to the other side of the fixed seat opposite to the docking platform, with its hinge axis parallel to the opening direction of the inner cavity, and the gate is adapted to swing to fit into the groove to close the opening of the inner cavity.

[0030] In one possible implementation, the enclosing component has multiple sets, and the multiple sets of the enclosing components are spaced apart in the vertical direction;

[0031] Each of the gates has a degree of freedom to move along the direction of the inner cavity opening.

[0032] In one possible implementation, each set of the support structures further includes:

[0033] A pre-reserved groove is provided for opening on the side of the chamber, its axis being parallel to the sliding direction of the translational member; and

[0034] A limiting rod is provided on the translational member to facilitate insertion into or withdrawal from the reserved slot;

[0035] Specifically, when the translational member moves to the point where the lifting rod drives the steel arch frame to abut the top of the chamber and the alignment rod is inserted into the positioning groove, the limiting rod is inserted into the reserved groove to restrict the fixed seat from rotating about the vertical axis.

[0036] In one possible implementation, each set of the support structures further includes:

[0037] A sinkhole, for being constructed on the bottom surface of the chamber, and coaxially connected to the positioning slot; and

[0038] A boss is provided at the bottom of the fixing base and is used to be embedded in the recessed groove;

[0039] The alignment rod is slidably connected to the boss, so that when the boss is embedded in the recessed groove, the alignment rod is adapted to be inserted into the positioning groove.

[0040] In one possible implementation, the quick-installation steel arch frame mounting structure further includes:

[0041] Two guide slots are respectively opened at both ends of the steel arch frame, and both are set downwards;

[0042] The upper ends of the two fixed seats are respectively inserted into the two guide grooves, and each of the lifting rods is adapted to move to abut the bottom of the corresponding guide groove so as to drive the steel arch frame to move upward.

[0043] Furthermore, when the steel arch frame moves upward to abut the top of the chamber, the upper end face of the fixed seat is above the open face of the guide groove.

[0044] In this embodiment, two sets of support structures are respectively supported at both ends of the steel arch frame to achieve the positioning of the steel arch frame relative to the chamber and the stable arrangement of the steel arch frame.

[0045] During the installation of the steel arch frame, the end of the steel arch frame needs to be placed on top of the fixed seat first. At this time, there is a gap between the top of the steel arch frame and the top of the chamber to avoid interference from the top structure of the chamber. When the steel arch frame is moved horizontally to the installation position, the alignment rod and the positioning groove are set coaxially. At this time, the alignment rod and the lifting rod are moved synchronously by the synchronous drive component. The alignment rod can be inserted into the positioning groove to complete the horizontal limiting of the fixed seat. The lifting rod can also be moved upward to push the steel arch frame upward so that the top of the steel arch frame abuts against the top surface of the chamber, thus completing the positioning of the steel arch frame.

[0046] The quick-installation steel arch frame installation structure for chamber support provided in this embodiment, compared with the prior art, can simultaneously achieve the positioning of the support structure and the steel arch frame relative to the chamber, thereby effectively avoiding the top structure of the chamber, ensuring the installation efficiency of the steel arch frame, and the overall efficiency of the chamber support system layout. Attached Figure Description

[0047] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0048] Figure 1 This is one of the structural schematic diagrams of the quick-installation steel arch frame installation structure provided in the embodiments of this application;

[0049] Figure 2 This is the second structural schematic diagram of the quick-installation steel arch frame installation structure provided in the embodiments of this application;

[0050] Figure 3 This is one of the three-dimensional structural diagrams of the support structure used in the embodiments of this application;

[0051] Figure 4 for Figure 3 Side view;

[0052] Figure 5 For along Figure 4 Cross-sectional view of line AA in the middle;

[0053] Figure 6 This is a second three-dimensional structural diagram of the support structure used in the embodiments of this application;

[0054] Figure 7 This is a three-dimensional structural diagram of the fixing base used in the embodiments of this application;

[0055] Figure 8 This is a three-dimensional structural diagram of the lifting rod, alignment rod, and synchronous drive component used in the embodiments of this application from an exploded perspective.

[0056] Figure 9 This is an exploded view of the enclosed component used in the embodiments of this application;

[0057] Figure 10 This is a schematic diagram of the positioning groove and reserved groove used in the embodiments of this application;

[0058] Figure 11 This is a schematic diagram of the guide groove structure used in the embodiments of this application;

[0059] Explanation of reference numerals in the attached drawings: 1. Fixed base; 11. Inner cavity; 12. Upper through hole; 13. Lower through hole; 14. Strip hole; 15. Boss; 2. Lifting rod; 3. Synchronous drive component; 31. Translation component; 32. Transmission arm; 321. Protruding shaft; 4. Alignment rod; 5. Enclosure assembly; 51. Docking platform; 511. Groove; 52. Gate plate; 6. Limiting rod; 10. Positioning groove; 20. Reserved groove; 30. Sinking groove; 100. Steel arch frame; 110. Guide groove. Detailed Implementation

[0060] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0061] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0062] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0063] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0064] Please refer to the following: Figures 1 to 11 The quick-installation steel arch frame installation structure for tunnel support provided in this application will now be described. The quick-installation steel arch frame installation structure proposed in this application includes two sets of support structures.

[0065] Two sets of support structures are respectively installed on both sides of the chamber and are symmetrically arranged with the chamber passage as the center. In this embodiment, the width direction of the chamber is defined as the left-right direction, that is, the two sets of support structures are arranged side by side along the left-right direction. Correspondingly, the height direction of the chamber is the up-down direction, and the depth direction of the chamber is the front-back direction.

[0066] In this embodiment, each set of support structures includes a positioning groove 10, a fixed base 1, a lifting rod 2, and a synchronous drive component 3.

[0067] The positioning groove 10 is used to be opened on the bottom surface of the chamber and is located close to the side of the chamber.

[0068] The fixed seat 1 is used to be installed on the bottom surface of the chamber, and the fixed seat 1 has an alignment rod 4, which is slidably connected to the fixed seat 1 in the vertical direction.

[0069] When the fixed base 1 is set in a preset position, the alignment rod 4 is coaxially arranged with the positioning groove 10 so that the alignment rod 4 can be inserted downward into the positioning groove 10 to restrict the movement of the fixed base 1 in the horizontal direction.

[0070] The positioning groove 10 has an elliptical or polygonal cross-section, and the alignment rod 4 adopts a structure that matches the cross-section of the positioning groove 10 so that when the alignment rod 4 is inserted into the positioning groove 10, it can restrict the rotation of the fixed seat 1 about the alignment rod 4 as an axis.

[0071] The lifting rod 2 is slidably mounted on the fixed base 1 in the vertical direction, and its upper end can extend above the fixed base 1 to abut against the end of the steel arch frame 100, thereby providing an upward force to the steel arch frame 100, so that the steel arch frame 100 moves upward to abut against the top surface of the chamber, and the arc surface of the top of the steel arch frame 100 is in contact with the top surface of the chamber.

[0072] The synchronous drive component 3 is mounted on the fixed base 1 and is connected to the lifting rod 2 and the alignment rod 4 in a transmission manner. In actual use, the synchronous drive component 3 is used to drive the alignment rod 4 and the lifting rod 2 to move synchronously and in opposite directions. Specifically, the synchronous drive component 3 is used to drive the alignment rod 4 to move downward to insert into the positioning groove 10, while driving the lifting rod 2 to move upward, so that the steel arch frame 100 moves toward the top surface of the chamber until the top surface of the steel arch frame 100 contacts the top surface of the chamber; or, the synchronous drive component 3 is used to drive the alignment rod 4 to move upward to disengage from the positioning groove 10, while driving the lifting rod 2 to move downward, so that the steel arch frame 100 separates from the top surface of the chamber and moves downward.

[0073] In this embodiment, two sets of support structures are respectively supported at both ends of the steel arch frame 100 to achieve the positioning of the steel arch frame 100 relative to the chamber and the stable arrangement of the steel arch frame 100.

[0074] During the installation of the steel arch frame 100, the end of the steel arch frame 100 needs to be placed on the top of the fixed seat 1 first. At this time, there is a gap between the top of the steel arch frame 100 and the top of the chamber to avoid interference from the top structure of the chamber. When the steel arch frame 100 is moved horizontally to the installation position, the alignment rod 4 and the positioning groove 10 are coaxially set. At this time, the alignment rod 4 and the lifting rod 2 are driven to move synchronously by the synchronous drive component 3, so that the alignment rod 4 can be inserted into the positioning groove 10 to complete the horizontal limiting of the fixed seat 1. The lifting rod 2 can also be moved upward to push the steel arch frame 100 upward so that the top of the steel arch frame 100 abuts against the top surface of the chamber, thus completing the positioning of the steel arch frame 100.

[0075] The quick-installation steel arch frame installation structure for chamber support provided in this embodiment, compared with the prior art, can simultaneously realize the positioning of the support structure and the steel arch frame 100 relative to the chamber, thereby effectively avoiding the top structure of the chamber, ensuring the installation efficiency of the steel arch frame 100, and the overall efficiency of the chamber support system layout.

[0076] In some embodiments, such as Figure 2 , Figure 6 and Figure 8 As shown, the synchronous drive component 3 includes a translational member 31 and two transmission arms 32.

[0077] The translational member 31 is disposed on the inner side of the fixed seat 1; it should be noted that the inner side of the fixed seat 1 is the side facing the chamber passage, that is, the side of the fixed seat 1 facing away from the side of the chamber on the same side; correspondingly, the outer side of the fixed seat 1 is the side facing the side of the chamber on the same side.

[0078] Two transmission arms 32 are arranged side by side on the translation member 31 in the vertical direction; wherein, one end of each transmission arm 32 is hinged to the translation member 31 and the other end is hinged to the fixed base 1, and the hinge axis of both ends is parallel to the front-back direction.

[0079] In practical use, the translational member 31 has the degree of freedom to move towards or away from the fixed base 1, and the end of the transmission arm 32 that is hinged to the fixed base 1 (hereinafter referred to as the sliding end of the transmission arm 32) has the degree of freedom to move relative to the fixed base 1 in the vertical direction. Based on this, two sets of transmission structures are formed:

[0080] (i) When the translational member 31 moves toward the fixed seat 1, the two transmission arms 32 swing simultaneously, and the sliding ends of the two transmission arms 32 move in opposite directions so that the sliding end of the transmission arm 32 located on the upper side abuts against the lifting rod 2, and drives the lifting rod 2 to move upward to abut against the steel arch frame 100, thereby transmitting the force that pushes the steel arch frame 100 upward; at the same time, the sliding end of the transmission arm 32 located on the lower side abuts against the alignment rod 4, and drives the alignment rod 4 to move downward to insert into the positioning groove 10.

[0081] (ii) When the translational member 31 moves away from the fixed seat 1, the two transmission arms 32 swing at the same time, and the sliding ends of the two transmission arms 32 move towards each other, so that the sliding end of the transmission arm 32 located on the upper side moves downward, thereby causing the lifting rod 2 to descend; at the same time, the sliding end of the transmission arm 32 located on the lower side also moves upward, so that the alignment rod 4 can move upward to disengage from the positioning groove 10.

[0082] In some embodiments, such as Figures 3 to 8 As shown, the fixing seat 1 has an internally hollow structure and its inner side has an open structure to form an inner cavity 11.

[0083] The top of the fixed base 1 has an upper through hole 12 that communicates with the inner cavity 11, and the bottom of the fixed base 1 has a lower through hole 13 that communicates with the inner cavity 11.

[0084] Based on the foregoing, the lifting rod 2 and the alignment rod 4 are slidably inserted into the upper through hole 12 and the lower through hole 13, respectively, to achieve a sliding connection between the lifting rod 2 and the fixed seat 1, and a sliding connection between the alignment rod 4 and the fixed seat 1, with the sliding direction parallel to the vertical direction. Furthermore, the sliding ends of the two transmission arms 32 are slidably disposed in the inner cavity 11 along the vertical direction and are respectively connected to the lifting rod 2 and the alignment rod 4.

[0085] It should be noted that the bottom of the lifting rod 2 and the top of the alignment rod 4 both have square pads that are adapted to the sliding end of the transmission arm 32. The square pads are made of elastic material so that they undergo elastic deformation when they come into contact with the sliding end of the transmission arm 32 and increase their contact area with the transmission arm 32, thereby enhancing the structural fit strength.

[0086] In some embodiments, such as Figure 6 and Figure 8 As shown, the fixing base 1 also has two strip holes 14 arranged side by side in the vertical direction. Each strip hole 14 extends in the vertical direction and is through in the front-back direction to communicate with the inner cavity 11.

[0087] Two strip holes 14 correspond to two transmission arms 32 respectively; based on this, the insertion end of the transmission arm 32 has a convex shaft 321 extending in the front-back direction. This convex shaft 321 is coaxially arranged with the hinge shaft of the transmission arm 32, and the convex shaft 321 is inserted into the corresponding strip hole 14 to realize the longitudinal movement of the transmission arm 32 relative to the fixed seat 1, as well as the swinging with the convex shaft 321 as the axis.

[0088] In some embodiments, such as Figures 3 to 5 As shown, the translation member 31 can move toward the fixed seat 1 to be embedded in the inner cavity 11. Correspondingly, the part of the fixed seat 1 and the translation member 31 that are on the same horizontal plane adopts an outward convex structure to form a larger inner cavity 11 space to accommodate the embedding of the translation member 31.

[0089] When the translational member 31 is inserted into the inner cavity 11, the axes of the two transmission arms 32 are parallel to the vertical direction, and drive the lifting rod 2 to move to the top of the chamber where the steel arch frame 100 abuts, and the alignment rod 4 moves to the insertion positioning groove 10. In this state, if no lateral external force is applied, the lifting rod 2 can provide stable support force.

[0090] Based on the foregoing, the fixed base 1 also includes a closing component 5; the closing component 5 is used to cover the opening of the inner cavity 11 and abut against the translation member 31 to restrict the translation member 31 from exiting the inner cavity 11, thereby strengthening the aforementioned stable support force.

[0091] In some embodiments, such as Figure 3 and Figure 6 As shown, the enclosure component 5 includes a docking platform 51 and a gate 52.

[0092] The docking platform 51 is located on one side of the fixed base 1, specifically on one side of the fixed base 1 facing the front-back direction; and a portion of the docking platform 51 extends into the inner side of the fixed base 1, and a groove 511 is provided on the upper side of the extended portion of the docking platform 51, which also extends through in the front-back direction.

[0093] The gate 52 is hinged to the other side of the fixed seat 1 and the docking platform 51, that is, it is set on the other side of the fixed seat 1 facing the front and rear direction. Its hinge axis is parallel to the opening direction of the inner cavity 11. Specifically, the gate 52 also includes a connecting seat that is hinged to it, and the connecting seat is fixedly set on the fixed seat 1.

[0094] By adopting the above technical solution, the gate 52 is adapted to swing to the embedded groove 511 to close the opening of the inner cavity 11, and is adapted to abut against the translation member 31 to restrict the translation member 31 from leaving the inner cavity 11.

[0095] In some embodiments, such as Figure 3 , Figure 6 and Figure 9 As shown, the sealing component 5 has multiple sets, and the multiple sets of sealing components 5 are spaced apart in the vertical direction to enhance the structural strength of its sealed inner cavity 11.

[0096] Each gate 52 has a degree of freedom to move along the opening direction of the inner cavity 11; such as Figure 9 As shown, the connecting seat has a mounting groove into which the hinge shaft of the gate 52 can be inserted. This mounting groove has a T-shaped cross-section to form an outer section with a smaller inner diameter and an inner section with a larger inner diameter, and the inner and outer sections are coaxially connected. The end of the hinge shaft of the gate 52 has an anti-detachment disc embedded in the inner section. The thickness of the anti-detachment disc is less than the length of the inner section, so that the gate 52 can swing and move axially along the mounting groove.

[0097] In some embodiments, such as Figure 1 , Figure 10 and Figure 11 As shown, each set of support structures also includes a reserved groove 20 and a limiting rod 6.

[0098] The reserved groove 20 is used to be opened on the side of the chamber, and its axis is parallel to the sliding direction of the translation member 31.

[0099] The limiting rod 6 is provided on the translation member 31 to facilitate insertion or withdrawal from the reserved slot 20.

[0100] Specifically, the fixed base 1 has a through hole in the left and right direction, and the limiting rod 6 is slidably inserted into this hole; when the fixed base 1 completes the initial positioning, the hole is coaxially connected with the reserved groove 20 so that the limiting rod 6 can be inserted into it.

[0101] By adopting the above technical solution, when the translational member 31 moves to the top of the chamber and the lifting rod 2 drives the steel arch frame 100 to abut against the top of the chamber, and the alignment rod 4 is inserted into the positioning groove 10, the limiting rod 6 is simultaneously inserted into the reserved groove 20 to limit the rotation of the fixed seat 1 with the vertical axis, thereby enhancing the strength and stability of the structure.

[0102] In some embodiments, such as Figure 1 , Figure 7 and Figure 10 As shown, each set of support structures also includes a sinkhole 30 and a boss 15.

[0103] The sinking trough 30 is used to be opened on the bottom surface of the chamber and is coaxially connected with the positioning trough 10. The inner diameter of the sinking trough 30 is larger than the inner diameter of the positioning trough 10.

[0104] The boss 15 is located at the bottom of the fixed seat 1 and is used to embed into the sink trough 30 to complete the initial positioning of the fixed seat 1 relative to the bottom surface of the chamber.

[0105] Based on the foregoing, the alignment rod 4 is slidably connected to the boss 15. Specifically, the aforementioned lower through hole 13 passes through the bottom of the fixed seat 1 and the boss 15 in the vertical direction. The alignment rod 4 is inserted into the lower through hole 13 to achieve the sliding connection between the alignment rod 4 and the boss 15, and to achieve the movement of the alignment rod 4 relative to the fixed seat 1 in the vertical direction.

[0106] By adopting the above technical solution, when the fixing seat 1 is initially positioned relative to the bottom surface of the chamber with the help of the boss 15 and the recessed groove 30, the alignment rod 4 and the positioning groove 10 are coaxially arranged so that the alignment rod 4 is suitable for insertion into the positioning groove 10, so as to facilitate the actual assembly of the structure and improve the installation efficiency of the structure.

[0107] In some embodiments, such as Figure 1 , Figure 2 and Figure 11 As shown, the quick-installation steel arch frame installation structure also includes two guide grooves 110.

[0108] Two guide grooves 110 are respectively opened at both ends of the steel arch frame 100, and both face downwards; in this embodiment, as Figure 11 As shown, each guide groove 110 also penetrates the outer side of the steel arch frame 100 in the direction of its own width to form a notch structure located at the outer edge of the steel arch frame 100.

[0109] In actual use, the upper ends of the two fixed seats 1 are respectively inserted into the two guide grooves 110, and each lifting rod 2 is adapted to move to abut the bottom of the corresponding guide groove 110 so as to drive the steel arch frame 100 to move upward.

[0110] By adopting the above technical solution, when the steel arch frame 100 moves upward to abut the top of the chamber, the upper end face of the fixed seat 1 is above the open face of the guide groove 110, that is, the fixed seat 1 is still in the guide groove 110, which can play the role of limiting the offset of the steel arch frame 100.

[0111] The above content is only a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A quick-installation steel arch frame installation structure for tunnel support, comprising two sets of support structures respectively installed on both sides of the tunnel, characterized in that, Each set of support structures includes: Positioning grooves are used to be formed on the bottom surface of the chamber; A fixed base is provided on the bottom surface of the chamber and has an alignment rod that is slidably connected to it in the vertical direction; the alignment rod is used to insert into the positioning groove to restrict the movement of the fixed base in the horizontal direction. A lifting rod, slidably mounted on the fixed base in the vertical direction, extends its upper end above the fixed base and abuts against the steel arch frame, thereby driving the steel arch frame upward to abut against the top surface of the chamber; and A synchronous drive component is disposed on the fixed base and is connected to the lifting rod and the alignment rod in a transmission manner; the synchronous drive component is used to drive the alignment rod to move downward to insert into the positioning groove, and also to drive the lifting rod to move upward so that the steel arch frame moves upward to abut the top surface of the chamber.

2. The quick-installation steel arch frame installation structure for chamber support as described in claim 1, characterized in that, The synchronous drive component includes: A translational member, disposed inside the fixed base, has a degree of freedom to move toward or away from the fixed base; and Two transmission arms are arranged side by side on the translation member in the vertical direction; one end of each transmission arm is hinged to the translation member and the other end is hinged to the fixed base, and the end of the transmission arm that is hinged to the fixed base has a degree of freedom to move relative to the fixed base in the vertical direction. When the translational member moves toward the fixed seat, the two transmission arms swing simultaneously, so that the transmission arm on the upper side abuts against the lifting rod and drives the lifting rod to move upward to abut against the steel arch frame, and the transmission arm on the lower side abuts against the alignment rod and drives the alignment rod to move downward to insert into the positioning groove.

3. The quick-installation steel arch frame installation structure for chamber support as described in claim 2, characterized in that, The fixing base has an internal hollow structure and its inner side has an open structure to form an inner cavity; The top of the fixing base has an upper through hole communicating with the inner cavity, and the bottom of the fixing base has a lower through hole communicating with the inner cavity. The lifting rod and the alignment rod are slidably inserted into the upper through hole and the lower through hole, respectively; the ends of the two transmission arms are embedded in the inner cavity and are respectively connected to the lifting rod and the alignment rod.

4. The quick-installation steel arch frame installation structure for chamber support as described in claim 3, characterized in that, The fixing base also has two strip holes arranged side by side in the vertical direction, each of the strip holes extending in the vertical direction and communicating with the inner cavity; The embedded end of the transmission arm has a convex shaft, which is coaxially arranged with the hinge shaft of the transmission arm, and the convex shaft is inserted into the corresponding strip hole.

5. The quick-installation steel arch frame installation structure for chamber support as described in claim 3, characterized in that, The translational member can move toward the fixed seat to be embedded in the inner cavity, and when the translational member is embedded in the inner cavity, the axes of the two transmission arms are parallel to the vertical direction, and drive the lifting rod to move to the top of the steel arch frame to abut the chamber, and the alignment rod to be inserted into the positioning groove. The mounting base also includes a sealing component; the sealing component is used to cover the opening of the inner cavity and abut against the translational member to restrict the translational member from exiting the inner cavity.

6. The quick-installation steel arch frame installation structure for chamber support as described in claim 5, characterized in that, The enclosed component includes: A docking platform is disposed on one side of the fixed base, with a portion extending into the inner side of the fixed base, and a groove is formed on the upper side of the extended portion of the docking platform; and A gate is hinged to the other side of the fixed seat opposite to the docking platform, with its hinge axis parallel to the opening direction of the inner cavity, and the gate is adapted to swing to fit into the groove to close the opening of the inner cavity.

7. The quick-installation steel arch frame installation structure for chamber support as described in claim 6, characterized in that, The enclosing component has multiple sets, and the multiple sets of the enclosing component are spaced apart along the vertical direction; Each of the gates has a degree of freedom to move along the direction of the inner cavity opening.

8. The quick-installation steel arch frame installation structure for chamber support as described in any one of claims 2-7, characterized in that, Each set of support structures also includes: A pre-reserved groove is provided for opening on the side of the chamber, its axis being parallel to the sliding direction of the translational member; and A limiting rod is provided on the translational member to facilitate insertion into or withdrawal from the reserved slot; Specifically, when the translational member moves to the point where the lifting rod drives the steel arch frame to abut the top of the chamber and the alignment rod is inserted into the positioning groove, the limiting rod is inserted into the reserved groove to restrict the fixed seat from rotating about the vertical axis.

9. The quick-installation steel arch frame installation structure for chamber support as described in claim 1, characterized in that, Each set of support structures also includes: A sinkhole, for being constructed on the bottom surface of the chamber, and coaxially connected to the positioning slot; and A boss is provided at the bottom of the fixing base and is used to be embedded in the recessed groove; The alignment rod is slidably connected to the boss, so that when the boss is embedded in the recessed groove, the alignment rod is adapted to be inserted into the positioning groove.

10. The quick-installation steel arch frame installation structure for chamber support as described in claim 1, characterized in that, The quick-installation steel arch frame structure also includes: Two guide slots are respectively opened at both ends of the steel arch frame, and both are set downwards; The upper ends of the two fixed seats are respectively inserted into the two guide grooves, and each of the lifting rods is adapted to move to abut the bottom of the corresponding guide groove so as to drive the steel arch frame to move upward. Furthermore, when the steel arch frame moves upward to abut the top of the chamber, the upper end face of the fixed seat is above the open face of the guide groove.

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