Self-adaptive hydraulic supporting device for deformation of surrounding rock in construction period of super-large-section tunnel
By introducing universal roller seats and adaptive arc-shaped support structures into the hydraulic support device, the problem of poor fit between the traditional device and the tunnel cross-section was solved, achieving efficient support and stable construction of extra-large cross-section tunnels.
Patent Information
- Application Number
- CN202511478293.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-16
- Publication Date
- 2025-11-18
AI Technical Summary
Existing hydraulic support devices are difficult to fit tightly with the tunnel cross-section in the construction of extra-large cross-section tunnels, resulting in weak support capacity. Furthermore, the support effect is affected by tunnel deformation. Traditional devices are prone to vibration and structural damage when the tunnel deforms.
The system combines a universal roller seat and a hydraulic lifting structure with a tunnel adaptive arc support structure, including an arc bracket, a rotation adjustment component, an adaptive arc support component, and a staggered support component. Through the extension, contraction, and rotation of multiple arc support plates and side arc plates, it achieves a close fit with the tunnel cross section and strong support.
It increases the contact area and strength of the tunnel section support, reduces vibration, extends the service life of the device, and enhances the support capacity and stability of the tunnel section.
Smart Images
Figure CN120968689A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of tunnel construction support device technology, specifically to an adaptive hydraulic support device for surrounding rock deformation during the construction of extra-large cross-section tunnels. Background Technology
[0002] Surrounding rock deformation is a general term for the phenomena of rheology, creep, displacement, settlement and bottom heave that occur in the surrounding rock mass after the excavation of underground caverns. It is mainly manifested as the collapse of loose and broken rock mass, large deformation of soft and expansive rock and soil, mountain deformation and rock burst, etc., and often occurs during tunnel construction.
[0003] Tunnel hydraulic support devices are key equipment in tunnel construction, mainly used to prevent tunnel deformation or collapse. Their design typically combines hydraulic systems and adjustable mechanical structures to adapt to different geological conditions and tunnel dimensions.
[0004] However, this hydraulic support device has the following drawbacks in practical use: 1. When using existing hydraulic support devices, to avoid deformation of the surrounding rock during construction, it is necessary to provide contact support for the tunnel cross-section to reduce the probability of deformation caused by vibration and pressure during construction. Traditional hydraulic support devices typically use a hydraulic support structure that is raised and lowered according to the tunnel height to ensure that the structure supporting the tunnel cross-section is in contact with the tunnel cross-section, thus achieving support. However, traditional hydraulic support devices are difficult to fit tightly against the tunnel cross-section; the contact area between them is small, resulting in weak support capacity for the tunnel cross-section. 2. In actual use, existing hydraulic support devices inevitably experience some deformation of the tunnel cross-section as tunnel construction progresses (this does not affect normal construction). At this time, the contact area between the traditional hydraulic support device and the tunnel cross-section will be affected, further impacting the device's ability to support the tunnel cross-section. Summary of the Invention
[0005] The purpose of this invention is to provide an adaptive hydraulic support device for surrounding rock deformation during the construction of extra-large cross-section tunnels, so as to solve the problems mentioned in the background art.
[0006] To achieve the above-mentioned objectives, the present invention adopts the following technical solution: This invention provides an adaptive hydraulic support device for surrounding rock deformation during the construction of extra-large cross-section tunnels, comprising: a universal roller seat; a hydraulic lifting structure connected to the universal roller seat; and a tunnel adaptive arc-shaped support structure installed on the inner side of the top of the hydraulic lifting structure, wherein the tunnel adaptive arc-shaped support structure abuts against the tunnel cross-section. The tunnel adaptive arc-shaped support structure includes: an arc-shaped bracket installed on the inner side of the top of the hydraulic lifting structure; a rotating adjustment assembly installed on the side of the arc-shaped bracket and extending into the interior; an arc-shaped support plate connected to the rotating adjustment assembly and movably disposed on the outer side of the arc-shaped bracket; adaptive arc-shaped support assemblies connected to the left and right sides of the arc-shaped support plate; and staggered support assemblies installed on the front and rear sides of the arc-shaped support plate and connected to the outer side of the arc-shaped bracket. Multiple of the arc-shaped support plate and the staggered support assembly are provided.
[0007] As a preferred embodiment of the present invention, the hydraulic lifting structure includes: a vertical hydraulic cylinder connected to the universal roller seat; an H-shaped support steel installed at the center of the interior of the vertical hydraulic cylinder; a lower connecting seat installed on the top of the H-shaped support steel; and pressing and positioning rods installed on the front and rear sides of the lower connecting seat. An arc-shaped bracket is installed and fixed on the inner side of the extrusion positioning rod.
[0008] In a preferred embodiment of the present invention, the arc-shaped bracket includes: an intermediate disk mounted between the two extrusion positioning rods; a side mounting base mounted on one side of the back of the intermediate disk; an inclined arm connected to the outside of the intermediate disk; and an arc-shaped steel bracket mounted on the outside of the inclined arm, wherein multiple inclined arms are provided. The outer side of the intermediate disk is equipped with a rotating adjustment component that extends into the interior of the intermediate disk. The rotating adjustment component is slidably connected to the inclined arm and is set through the arc-shaped steel bracket.
[0009] As a preferred embodiment of the present invention, a plurality of arc-shaped support plates are provided on the outer side of the arc-shaped steel bracket, staggered support components are installed on the front and rear sides of the arc-shaped steel bracket, and the adaptive arc-shaped support components are provided on the outer side of the arc-shaped steel bracket.
[0010] As a preferred embodiment of the present invention, the rotary adjustment assembly includes: a linear drive source mounted on the outside of the side mounting base; a transmission belt connected to the output end of the linear drive source via a synchronous pulley and movably disposed on the outside of the intermediate disk; a rotating rod connected to the inside of the transmission belt via a synchronous pulley and rotatably connected to the center of the intermediate disk; a rotating disk mounted on the outside of the rotating rod and movably disposed inside the intermediate disk; an arc-shaped inner groove formed at an eccentric position inside the rotating disk; an inner rotating protrusion movably disposed inside the arc-shaped inner groove; and a metal rod rotatably connected to the inner rotating protrusion and extending to the outside of the intermediate disk.
[0011] In a preferred embodiment of the present invention, the metal rod is slidably connected to the inclined arm, the top of the metal rod extends through the arc-shaped steel bracket, an arc-shaped support plate is installed at the top of the metal rod, side protrusions are installed on the left and right sides of the top of the metal rod, and adaptive arc-shaped support assemblies are installed on the top of the side protrusions on the left and right sides of the metal rod. The arc-shaped inner groove and the metal rod are provided in multiple forms.
[0012] As a preferred embodiment of the present invention, the adaptive arc support assembly includes: linear rotating blocks rotatably connected to the left and right sides of the arc support plate; a side connecting rotating rod slidably connected to the linear rotating blocks; a side arc plate rotatably connected to the side connecting rotating rod; a lower mounting seat installed at the bottom center of the side arc plate; a rotating head rotatably connected to the lower mounting seat; a first compensating hydraulic cylinder connected to the rotating head; a bottom seat installed at the bottom of the first compensating hydraulic cylinder by screws; and a guide seat rotatably connected to the bottom seat and installed on the side of the top end of the metal rod.
[0013] As a preferred embodiment of the present invention, a rotating connecting rod is installed on the side of the side arc plate away from the side connecting rod. Two horizontal compensating hydraulic cylinders are installed on the side of the rotating connecting rod by screws. The output end of the horizontal compensating hydraulic cylinder is connected to a compensating connecting rod. The compensating connecting rod is rotatably connected to the side of another side arc plate.
[0014] As a preferred embodiment of the present invention, the staggered support assembly includes: extended protrusions installed on the front and rear sides of the arc-shaped support plate; an inclined metal arm rotatably connected to the outside of the extended protrusions; a positioning rotating pin rotatably connected to the top of the inclined metal arm; and a lower inclined arm rotatably connected to the positioning rotating pin via a pre-reserved slot and movably connected to the side of the inclined metal arm. The bottom of the lower inclined arm is rotatably connected to metal protrusions on the front and rear sides of the arc-shaped steel bracket, and two inclined metal arms arranged front and rear are movably connected to the outer side of one of the extended protrusions. Compared with existing technologies, one or more of the above technical solutions have the following beneficial effects: 1. In the adaptive hydraulic support device for surrounding rock deformation during the construction of extra-large cross-section tunnels, when supporting the tunnel cross-section, the adjustable arc-shaped support plate and the adaptively adjustable side arc-shaped plate (via a hydraulic cylinder structure) ensure that the arc-shaped support plate and side arc-shaped plate supporting the tunnel cross-section fit tightly against the side of the tunnel cross-section. This increases the contact area between the tunnel cross-section and the supporting arc-shaped support plate and side arc-shaped plate, ensuring the effective support of the tunnel cross-section. Furthermore, multiple arc-shaped support plates and side arc-shaped plates supporting the tunnel cross-section can form an adjustable structure resembling a circle or arc. This ensures that the arc-shaped support plate and side arc-shaped plate can support tunnel cross-sections with different curvatures while reducing the gap size at the contact points between the arc-shaped support plate / side arc-shaped plate and the tunnel cross-section, thereby enhancing the hydraulic support device's ability to support the tunnel cross-section. It should be noted that during tunnel excavation and construction, tunnels are generally designed in a regular arc or semi-circle shape. In this case, multiple adjustable arc-shaped support plates and side arc-shaped plates can match the tunnel to the maximum extent, ensuring effective support for the tunnel. 2. In the adaptive hydraulic support device for surrounding rock deformation during the construction of extra-large cross-section tunnels, when the arc-shaped support plate is moved to support the tunnel cross-section, two pairs of rotatable inclined metal arms and a lower inclined arm structure are installed on the front and rear sides of the arc-shaped support plate. The two pairs of inclined metal arms and the lower inclined arm structure form a rectangle, which can support the telescopic arc-shaped support plate. This reduces the compressive strength fed back to the metal rod when the arc-shaped support plate supports the tunnel cross-section, and reduces the probability of the metal rod being displaced or even broken due to the vibration force generated during tunnel construction when supporting the tunnel cross-section. This ensures the strength and lifespan of the hydraulic support device in supporting the tunnel cross-section. 3. In the adaptive hydraulic support device for surrounding rock deformation during the construction of extra-large cross-section tunnels, when the tunnel cross-section is supported by multiple arc-shaped support plates and side arc-shaped plates, the support strength of the support structure at the root of the arc-shaped support plates and side arc-shaped plates supporting the tunnel cross-section can be improved by hydraulic support at the root of the arc-shaped support plates and side arc-shaped plates supporting the tunnel cross-section. This allows the multiple arc-shaped support plates and side arc-shaped plates supporting the tunnel cross-section to form a high-strength steel structure, ensuring the hydraulic support device's ability to support extra-large area tunnel cross-sections. 4. In the adaptive hydraulic support device for surrounding rock deformation during the construction of extra-large cross-section tunnels, when the tunnel cross-section is supported by an arc-shaped support plate, a first compensating hydraulic cylinder structure with inclined supports installed at the bottom of the side arc-shaped plates that are rotatably connected to the left and right sides of the arc-shaped support plate serves two purposes. First, it works with the metal rod and the side arc-shaped plates to form a triangular structure, which limits and fixes the adjusted arc-shaped support plate and the rotatably connected side arc-shaped plates on the left and right sides, ensuring the ability to support the tunnel cross-section. Second, through the operation of the first compensating hydraulic cylinder, the position and angle of the side arc-shaped plates are finely adjusted according to the curvature of the tunnel cross-section, ensuring that the side arc-shaped plates can fit tightly against the tunnel cross-section. Attached Figure Description
[0015] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.
[0016] Furthermore, the terms "installation," "setup," "equipped with," "connection," "linking," and "socketing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.
[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the overall front view of the present invention; Figure 3 This is a schematic diagram of the overall front cross-section of the present invention; Figure 4 This is a schematic diagram of the connection between the universal roller seat and the hydraulic lifting structure of the present invention; Figure 5 This is a schematic diagram of the tunnel adaptive arc support structure of the present invention; Figure 6 This is a schematic diagram of the connection between the arc-shaped bracket and the arc-shaped support plate of the present invention; Figure 7 This is the present invention. Figure 6 Enlarged structural diagram of region A in the middle; Figure 8 This is a schematic diagram of the connection between the metal rod and the adaptive arc support assembly of the present invention; Figure 9 This is a schematic diagram of the connection between the adaptive arc support component and the staggered support component of the present invention; Figure 10This is a schematic diagram of the adaptive arc support component of the present invention; Figure 11 This is a schematic diagram of the connection between the arc-shaped steel bracket and the second compensating hydraulic cylinder of the present invention; In the picture: 10. Universal caster base; 20. Hydraulic lifting structure; 201. Vertical hydraulic cylinder; 202. H-shaped support steel; 203. Lower connecting seat; 204. Extrusion positioning rod; 30. Tunnel adaptive arc support structure; 301. Arc bracket; 302. Rotary adjustment assembly; 303. Arc support plate; 304. Adaptive arc support assembly; 305. Staggered support assembly; 3011, Central disc; 3012, Side mounting base; 3013, Angled arm; 3014, Arc-shaped steel bracket; 30141, Metal protrusion; 3021, Linear drive source; 3022, Drive belt; 3023, Rotating rod; 3024, Rotating disk; 3025, Arc-shaped inner groove; 3026, Inner rotating protrusion; 3027, Metal rod; 30271, Side protrusion; 3041. Linear rotating block; 3042. Side connecting rod; 3043. Side arc plate; 30431. Rotating connecting rod; 30432. Horizontal compensating hydraulic cylinder; 30433. Compensating connecting rod; 3044. Lower mounting seat; 3045. Rotating head; 3046. First compensating hydraulic cylinder; 3047. Bottom seat; 3048. Guide seat; 3051. Extended protrusion; 3052. Angled metal arm; 3053. Positioning rotating pin; 3054. Lower slanted arm; 40. Guide head; 401. Mounting block; 402. Second compensating hydraulic cylinder; 403. Lower movable block. Detailed Implementation
[0018] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application. Example 1
[0019] Please see Figures 1-10An adaptive hydraulic support device for surrounding rock deformation during the construction of an extra-large cross-section tunnel includes a universal roller seat 10; a hydraulic lifting structure 20 connected to the universal roller seat 10; and a tunnel adaptive arc-shaped support structure 30 installed on the inner side of the top of the hydraulic lifting structure 20, the tunnel adaptive arc-shaped support structure 30 abutting against the tunnel cross-section. The tunnel adaptive arc-shaped support structure 30 includes: an arc-shaped bracket 301 installed on the inner side of the top of the hydraulic lifting structure 20; a rotating adjustment component 302 installed on the side of the arc-shaped bracket 301 and extending into the interior; an arc-shaped support plate 303 connected to the rotating adjustment component 302 and movably disposed on the outer side of the arc-shaped bracket 301; adaptive arc-shaped support components 304 connected to the left and right sides of the arc-shaped support plate 303; and staggered support components 305 installed on the front and rear sides of the arc-shaped support plate 303 and connected to the outer side of the arc-shaped bracket 301. Multiple arc-shaped support plates 303 and staggered support components 305 are provided.
[0020] The working principle described above is as follows: When supporting the tunnel cross-section to ensure normal tunnel construction, the device is first moved into the tunnel. Based on the tunnel's height, the hydraulic lifting structure 20 is activated, driving the arc-shaped support 301 connected to the hydraulic lifting structure 20 to initially adjust the distance between the arc-shaped support plate 303 and the tunnel cross-section. Then, the rotary adjustment component 302 is activated, causing multiple arc-shaped support plates 303 connected to the rotary adjustment component 302 to extend and retract, fitting the arc-shaped support plates 303 against the tunnel cross-section. Simultaneously, during the extension and retraction of the arc-shaped support plates 303, the adaptive arc-shaped support component 304 installed on the side of the arc-shaped support plate 303 can move, matching the tunnel cross-section to ensure the contact area between the tunnel cross-section, the arc-shaped support plate 303, and the adaptive arc-shaped support component 304, thereby improving the hydraulic support device's ability and effectiveness in supporting the tunnel cross-section. The design of the staggered support component 305 can further support and position the arc support plate 303 and the adaptive arc support component 304, improve the strength of the arc support plate 303 and the adaptive arc support component 304 in supporting the tunnel section, and reduce the force applied to the rotary adjustment component 302 during support, thus ensuring the service life of the rotary adjustment component 302.
[0021] In this invention, multiple arc-shaped support plates 303 and adaptive arc-shaped support components 304 can adaptively form an adjustable arc or semi-circle (similar) shape, maximizing the contact area of the arc-shaped support plates 303 and adaptive arc-shaped support components 304 for supporting tunnel cross-sections of different structural shapes, thus enhancing the ability to support tunnel cross-sections.
[0022] For details, please refer to the following: Figure 4The hydraulic lifting structure 20 includes: a vertical hydraulic cylinder 201 connected to the universal roller seat 10; an H-shaped support steel 202 installed at the center of the vertical hydraulic cylinder 201; a lower connecting seat 203 installed on the top of the H-shaped support steel 202; and extrusion positioning rods 204 installed on the front and rear sides of the lower connecting seat 203, wherein an arc-shaped bracket 301 is installed and fixed on the inner side of the extrusion positioning rod 204.
[0023] In the adaptive hydraulic support device for surrounding rock deformation during the construction of extra-large cross-section tunnels of the present invention, when supporting the tunnel cross-section, the vertical hydraulic cylinder 201 is activated to operate, driving the universal roller seat 10 connected to the output end of the vertical hydraulic cylinder 201 to slide up and down on the outside of the H-shaped support steel 202, adjusting the position and height of the lower connecting seat 203 installed on the top of the H-shaped support steel 202.
[0024] For details, please refer to the following: Figure 5 and Figure 6 The arc-shaped bracket 301 includes: an intermediate disc 3011 installed between two extrusion positioning rods 204; a side mounting seat 3012 installed on one side of the back of the intermediate disc 3011; an inclined arm 3013 connected to the outside of the intermediate disc 3011; and an arc-shaped steel bracket 3014 installed on the outside of the inclined arm 3013. Multiple inclined arms 3013 are provided. Among them, a rotary adjustment component 302 extending into the interior of the intermediate disc 3011 is installed on the outside of the intermediate disc 3011. The rotary adjustment component 302 is slidably connected to the inclined arm 3013 and passes through the arc-shaped steel bracket 3014.
[0025] In this invention, multiple arc-shaped support plates 303 are provided on the outer side of the arc-shaped steel bracket 3014, staggered support components 305 are installed on the front and rear sides of the arc-shaped steel bracket 3014, and adaptive arc-shaped support components 304 are provided on the outer side of the arc-shaped steel bracket 3014.
[0026] For details, please refer to the following: Figure 5 , Figure 6 and Figure 7 The rotary adjustment assembly 302 includes: a linear drive source 3021 mounted on the outside of the side mounting base 3012; a transmission belt 3022 connected to the output end of the linear drive source 3021 via a synchronous pulley and movably disposed on the outside of the intermediate disk 3011; a rotating rod 3023 connected to the inside of the transmission belt 3022 via a synchronous pulley and rotatably connected to the center of the intermediate disk 3011; a rotating disk 3024 mounted on the outside of the rotating rod 3023 and movably disposed inside the intermediate disk 3011; an arc-shaped inner groove 3025 formed at an eccentric position inside the rotating disk 3024; an inner rotating protrusion 3026 movably disposed inside the arc-shaped inner groove 3025; and a metal rod 3027 rotatably connected to the inner rotating protrusion 3026 and extending to the outside of the intermediate disk 3011.
[0027] In this invention, the metal rod 3027 is slidably connected to the inclined arm 3013. The top of the metal rod 3027 is provided through the arc-shaped steel bracket 3014. An arc-shaped support plate 303 is installed at the top of the metal rod 3027. Side protrusions 30271 are installed on the left and right sides of the top of the metal rod 3027. Adaptive arc-shaped support components 304 are installed on the top of the side protrusions 30271 and installed on the left and right sides of the metal rod 3027. Multiple arc-shaped inner grooves 3025 and metal rod 3027 are provided.
[0028] In the adaptive hydraulic support device for surrounding rock deformation during the construction of extra-large cross-section tunnels of the present invention, when the arc-shaped support plate 303 can be tightly fitted with the tunnel cross-section, the linear drive source 3021 is activated to operate, driving the transmission belt 3022 connected to the outer side of the output end of the linear drive source 3021 via a synchronous pulley to operate, and causing the rotating rod 3023 connected to the inner side of the transmission belt 3022 via the synchronous pulley to rotate. When the rotating rod 3023 rotates, the rotating disk 3024 installed on its outer side will rotate. Through the arc-shaped inner groove 3025 opened inside the rotating disk 3024, the inner rotating protrusion 3026 movably connected to the inner side of the arc-shaped inner groove 3025 will move, causing the metal rod 3027 rotatably connected to the inner rotating protrusion 3026 to slide inside the inclined arm 3013, adjusting the position and height of the arc-shaped support plate 303 at the top of the metal rod 3027.
[0029] For details, please refer to the following: Figure 8 , Figure 9 and Figure 10 The adaptive arc support assembly 304 includes: a linear rotating block 3041 rotatably connected to the left and right sides of the arc support plate 303; a side connecting rod 3042 slidably connected to the linear rotating block 3041; a side arc plate 3043 rotatably connected to the side connecting rod 3042; a lower mounting seat 3044 installed at the bottom center of the side arc plate 3043; a rotating head 3045 rotatably connected to the lower mounting seat 3044; a first compensating hydraulic cylinder 3046 connected to the rotating head 3045; a bottom seat 3047 installed at the bottom of the first compensating hydraulic cylinder 3046 by screws; and a guide seat 3048 rotatably connected to the bottom seat 3047 and installed on the top side of the metal rod 3027.
[0030] In this invention, a rotating connecting rod 30431 is installed on the side of the side arc plate 3043 away from the side connecting rod 3042. Two horizontal compensating hydraulic cylinders 30432 are installed on the side of the rotating connecting rod 30431 by screws. The output end of the horizontal compensating hydraulic cylinder 30432 is connected to a compensating connecting rod 30433. The compensating connecting rod 30433 is rotatably connected to the side of the other side arc plate 3043.
[0031] It should be noted that the side arc plate 3043 and the arc support plate 303 are equipped with compression sensors and infrared distance sensors to detect whether the side arc plate 3043, the arc support plate 303 are in contact with the tunnel section and the distance between them.
[0032] In the adaptive hydraulic support device for surrounding rock deformation during the construction of extra-large cross-section tunnels of the present invention, when the arc-shaped support plate 303 moves up and down, the linear rotating blocks 3041 rotatably connected to its left and right sides can drive the side connecting rotating rods 3042 slidably connected to the sides of the linear rotating blocks 3041 to drive the side arc-shaped plate 3043 to move and rotate in an arc shape. This ensures that the side arc-shaped plate 3043 and the arc-shaped support plate 303 are movable and in contact with the tunnel cross-section, increasing the contact area between the arc-shaped support plate 303, the side arc-shaped plate 3043 and the tunnel cross-section, and ensuring the support capacity and strength of the tunnel cross-section. When supporting the tunnel cross-section, the horizontal compensation hydraulic cylinder 30432 is activated, which drives the compensation connecting rod 30433 connected to the output end of the horizontal compensation hydraulic cylinder 30432 to extend and retract, and drives the side arc plate 3043 rotatably connected to the outside of the compensation connecting rod 30433 to move. It adaptively adjusts according to the various positions of the tunnel cross-section, changes the arc shape and distance of each side arc plate 3043, and ensures that the side arc plate 3043 can fit tightly with the tunnel cross-section.
[0033] For details, please refer to the following: Figure 9 The staggered support assembly 305 includes: an extension protrusion 3051 installed on the front and rear sides of the arc-shaped support plate 303; an inclined metal arm 3052 rotatably connected to the outside of the extension protrusion 3051; a positioning rotating pin 3053 rotatably connected to the top of the inclined metal arm 3052; and a lower inclined arm 3054 rotatably connected to the positioning rotating pin 3053 via a reserved groove and rotatably connected to the side of the inclined metal arm 3052. The bottom of the lower inclined arm 3054 is rotatably connected to the metal protrusion 30141 on the front and rear sides of the arc-shaped steel bracket 3014. Two inclined metal arms 3052 arranged in a front and rear arrangement are rotatably connected to the outside of one extension protrusion 3051.
[0034] It should be noted that the area of the reserved groove is larger than the cross-sectional area of the positioning rotating pin 3053.
[0035] In the adaptive hydraulic support device for surrounding rock deformation during the construction of extra-large cross-section tunnels of the present invention, when the arc-shaped support plate 303 moves up and down, the extension protrusions 3051 installed on its front and rear sides will also move up and down, driving the inclined metal arm 3052, which is rotatably connected to the extension protrusions 3051, to move. At this time, when the inclined metal arm 3052 moves (rotates), the positioning rotating pin 3053 rotatably connected to its bottom will pull the lower inclined arm 3054 to move, and the lower inclined arm 3054 rotates outside the metal protrusion 30141. Through the structure of the lower inclined arm 3054 and the inclined metal arm 3052, which are arranged in a rectangular shape, the arc-shaped support plate 303 that moves in a telescopic manner is supported, thereby improving the support strength of the arc-shaped support plate 303 for the tunnel cross-section. Example 2
[0036] For details, please refer to the following: Figure 11 A guide head 40 is rotatably connected to the inner bottom of the bottommost side arc plate 3043. A mounting block 401 is installed at the bottom of the guide head 40 by screws. The mounting block 401 is connected to the output end of the second compensating hydraulic cylinder 402. A lower movable block 403 is installed at the bottom of the second compensating hydraulic cylinder 402 by screws. The lower movable block 403 is rotatably connected to the inner bottom of the arc steel bracket 3014.
[0037] In the adaptive hydraulic support device for surrounding rock deformation during the construction of extra-large cross-section tunnels of the present invention, when supporting the tunnel cross-section, the second compensating hydraulic cylinder 402 can be activated to drive the output end of the second compensating hydraulic cylinder 402 to rotate and move the side arc plate 3043 connected to the guide head 40, thereby supporting the root part of the tunnel cross-section and further improving the strength and ability of the hydraulic support device to support the tunnel cross-section.
[0038] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.
[0039] The terms “center,” “longitudinal,” “lateral,” “front,” “rear,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are merely simplified descriptions for the convenience of describing the present invention 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 limiting the scope of protection of the present invention.
[0040] Therefore, any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this invention, based on the technical solution and inventive concept of this invention, should be covered within the protection scope of this invention.
Claims
1. A self-adaptive hydraulic support device for surrounding rock deformation during the construction of extra-large cross-section tunnels, characterized in that, include: Universal roller seat (10); hydraulic lifting structure (20) connected to the universal roller seat (10); tunnel adaptive arc support structure (30) installed on the inner side of the top of the hydraulic lifting structure (20), the tunnel adaptive arc support structure (30) abutting against the tunnel cross section, The tunnel adaptive arc support structure (30) includes: an arc support (301) installed on the inner side of the top of the hydraulic lifting structure (20); a rotary adjustment component (302) installed on the side of the arc support (301) and extending into the interior; an arc support plate (303) connected to the rotary adjustment component (302) and movably disposed on the outside of the arc support (301); adaptive arc support components (304) connected to the left and right sides of the arc support plate (303); and staggered support components (305) installed on the front and rear sides of the arc support plate (303) and connected to the outside of the arc support (301). The arc-shaped support plate (303) and the staggered support assembly (305) are provided in multiple forms.
2. The adaptive hydraulic support device for surrounding rock deformation during the construction of an extra-large cross-section tunnel according to claim 1, characterized in that: The hydraulic lifting structure (20) includes: a vertical hydraulic cylinder (201) connected to the universal roller seat (10); an H-shaped support steel (202) installed at the center inside the vertical hydraulic cylinder (201); a lower connecting seat (203) installed on the top of the H-shaped support steel (202); and compression positioning rods (204) installed on the front and rear sides of the lower connecting seat (203). An arc-shaped bracket (301) is installed and fixed on the inner side of the extrusion positioning rod (204).
3. The adaptive hydraulic support device for surrounding rock deformation during the construction of an extra-large cross-section tunnel according to claim 2, characterized in that: The arc-shaped bracket (301) includes: an intermediate disc (3011) mounted between the two compression positioning rods (204); a side mounting base (3012) mounted on one side of the back of the intermediate disc (3011); a slanted arm (3013) connected to the outside of the intermediate disc (3011); and an arc-shaped steel bracket (3014) mounted on the outside of the slanted arm (3013), wherein multiple slanted arms (3013) are provided. The outer side of the intermediate disk (3011) is equipped with a rotary adjustment component (302) extending into the interior of the intermediate disk (3011). The rotary adjustment component (302) is slidably connected to the inclined arm (3013) and is set through the arc-shaped steel bracket (3014).
4. The adaptive hydraulic support device for surrounding rock deformation during the construction of an extra-large cross-section tunnel according to claim 3, characterized in that: The outer side of the arc-shaped steel bracket (3014) is provided with multiple arc-shaped support plates (303), and staggered support components (305) are installed on the front and rear sides of the arc-shaped steel bracket (3014). The adaptive arc-shaped support component (304) is provided on the outer side of the arc-shaped steel bracket (3014).
5. The adaptive hydraulic support device for surrounding rock deformation during the construction of an extra-large cross-section tunnel according to claim 3, characterized in that: The rotary adjustment assembly (302) includes: a linear drive source (3021) mounted on the outside of the side mounting base (3012); a transmission belt (3022) connected to the output end of the linear drive source (3021) via a synchronous pulley and movably disposed on the outside of the intermediate disk (3011); a rotating rod (3023) connected to the inside of the transmission belt (3022) via a synchronous pulley and rotatably connected to the center of the interior of the intermediate disk (3011); a rotating disk (3024) mounted on the outside of the rotating rod (3023) and movably disposed inside the intermediate disk (3011); an arc-shaped inner groove (3025) formed at the eccentric position inside the rotating disk (3024); an inner rotating protrusion (3026) movably disposed inside the arc-shaped inner groove (3025); and a metal rod (3027) rotatably connected to the inner rotating protrusion (3026) and extending to the outside of the intermediate disk (3011).
6. The adaptive hydraulic support device for surrounding rock deformation during the construction of an extra-large cross-section tunnel according to claim 5, characterized in that: The metal rod (3027) is slidably connected to the inclined arm (3013). The top of the metal rod (3027) passes through the arc-shaped steel bracket (3014). An arc-shaped support plate (303) is installed at the top of the metal rod (3027). Side protrusions (30271) are installed on the left and right sides of the top of the metal rod (3027). Adaptive arc-shaped support components (304) are installed on the top of the side protrusions (30271) on the left and right sides of the metal rod (3027). The arc-shaped inner groove (3025) and the metal rod (3027) are provided in multiple forms.
7. The adaptive hydraulic support device for surrounding rock deformation during the construction of an extra-large cross-section tunnel according to claim 6, characterized in that: The adaptive arc support assembly (304) includes: a linear rotating block (3041) rotatably connected to the left and right sides of the arc support plate (303); a side connecting rod (3042) slidably connected to the linear rotating block (3041); a side arc plate (3043) rotatably connected to the side connecting rod (3042); a lower mounting seat (3044) installed at the bottom center of the side arc plate (3043); a rotating head (3045) rotatably connected to the lower mounting seat (3044); a first compensating hydraulic cylinder (3046) connected to the rotating head (3045); a bottom seat (3047) installed at the bottom of the first compensating hydraulic cylinder (3046) by screws; and a guide seat (3048) rotatably connected to the bottom seat (3047) and installed on the top side of the metal rod (3027).
8. The adaptive hydraulic support device for surrounding rock deformation during the construction of an extra-large cross-section tunnel according to claim 7, characterized in that: A rotating link (30431) is installed on the side of the side arc plate (3043) away from the side connecting rod (3042). Two horizontal compensating hydraulic cylinders (30432) are installed on the side of the rotating link (30431) by screws. The output end of the horizontal compensating hydraulic cylinder (30432) is connected to a compensating link (30433). The compensating link (30433) is rotatably connected to the side of another side arc plate (3043).
9. The adaptive hydraulic support device for surrounding rock deformation during the construction of an extra-large cross-section tunnel according to claim 4, characterized in that: The staggered support assembly (305) includes: an extension protrusion (3051) installed on the front and rear sides of the arc-shaped support plate (303); an inclined metal arm (3052) rotatably connected to the outside of the extension protrusion (3051); a positioning rotating pin (3053) rotatably connected to the top of the inclined metal arm (3052); and a lower inclined arm (3054) rotatably connected to the positioning rotating pin (3053) via a reserved slot and rotatably connected to the side of the inclined metal arm (3052). The bottom of the lower inclined arm (3054) is rotatably connected to the metal protrusions (30141) on the front and rear sides of the arc-shaped steel bracket (3014), and two inclined metal arms (3052) are movably connected to the outer side of one of the extended protrusions (3051).