Telescopic rockfall protection shed tunnel and mounting method thereof

Abstract

The invention relates to the technical field of slope protection, in particular to a telescopic rockfall protection shed tunnel and a mounting method thereof. Comprising a shed tunnel support, the shed tunnel support comprises a plurality of arched frames arranged at intervals in the length direction of a tunnel, and the arched frames are fixedly connected through longitudinal connecting rods; the arched frame comprises shed tunnel foundations which are located on the outer sides of the two sides of the tunnel respectively. The vertical telescopic parts are connected with the shed tunnel foundation and comprise a plurality of vertical telescopic rods which are sequentially connected from top to bottom, the vertical telescopic rod located at the lowest end is movably connected with the shed tunnel foundation, and every two adjacent vertical telescopic parts are connected through a first telescopic supporting piece; the arched telescopic parts comprise a plurality of sections of arched telescopic rods which are sequentially connected, the two arched telescopic rods at the topmost ends of the two arched telescopic parts are connected through a closure mechanism, and the two adjacent arched telescopic rods are connected through a second telescopic supporting piece. The device can be rapidly installed, the construction cost is reduced, the height can be flexibly adjusted, and large impact load can be borne.

Description

Technical Field

[0001] The invention relates to the technical field of slope protection, in particular to a telescopic rockfall protection shed and an installation method thereof. Background Art

[0002] Railways are the backbone of my country's comprehensive transportation system. As a critical national infrastructure, they are of vital importance to my country's economic development and social stability. In recent years, my country's railway construction has developed rapidly, with the continuous advancement of key corridor projects, such as those connecting Xinjiang and Tibet, along rivers, coasts, and borders. However, a large number of my country's railways traverse difficult mountainous areas with large elevation differences and complex geological environments. Railway construction and maintenance face challenges such as a high proportion of bridges and tunnels, significant elevation differences in the lines, and difficulty in equipment maintenance. Due to the topography of the railway corridors and the requirements for railway route selection, dangerous rock masses are widely distributed at the entrances of railway tunnels, resulting in frequent rockfall disasters.

[0003] To ensure the safety of railway trains operating in rugged mountainous areas prone to frequent rockfalls, commercial rockfall protection sheds and tunnels have been put into use. These products intercept falling rocks and provide protection. However, research has revealed that most current rockfall protection products have complex construction processes and high construction costs. Summary of the Invention

[0004] The purpose of the present invention is to overcome the above-mentioned defects of the prior art and propose a telescopic rockfall protection shed tunnel and its installation method, which can be quickly installed, reduce construction costs, flexibly adjust the height, and can withstand large impact loads.

[0005] The technical solution of the present invention is: a telescopic rockfall protection tunnel shed, which includes a tunnel shed support, the tunnel shed support includes a plurality of arch frames arranged at intervals along the length of the tunnel, and the arch frames are fixedly connected by longitudinal connecting rods; the arch frames include: Shed-tunnel foundations are located outside the tunnel and spaced apart on both sides along the tunnel direction; The vertical telescopic part is connected to the shed hole foundation and includes several vertical telescopic rods connected in sequence up and down. The vertical telescopic rod at the lowest end is movably connected to the shed hole foundation. Two adjacent vertical telescopic parts are connected by a first telescopic support member. The arched telescopic part is located at the top of the arch frame and includes several arched telescopic rods connected in sequence. The arched telescopic rod at the bottom is fixedly connected to the vertical telescopic rod at the top. The two arched telescopic rods at the top of the two arched telescopic parts are connected by a joint mechanism, and the adjacent arched telescopic rods are connected by a second telescopic support member.

[0006] In the present invention, an end plate is fixed to the bottom end of the vertical telescopic rod, a locking mechanism is provided at the lower end of the vertical telescopic rod, and a first telescopic support is fixed to the upper part of each vertical telescopic rod except the uppermost vertical telescopic rod; The size of each section of the vertical telescopic rod decreases from top to bottom, and the lower vertical telescopic rod is slidably arranged in the upper vertical telescopic rod; The end plate of the lowest vertical telescopic rod is movably arranged in the shed hole foundation, and the plates of other vertical telescopic rods are movably arranged in the first telescopic support member adjacent below.

[0007] The shed cave foundation comprises: The basic base is box-shaped, and a bottom spring is fixed to the upper surface of the bottom; The cover plate is fixed on the top of the basic base, and a cover plate spring is fixed on its lower surface. The bottom end of the lowest vertical telescopic rod passes through the through hole on the cover plate and extends into the basic base, and the end plate fixed at the bottom end of the vertical telescopic rod is arranged between the bottom spring and the cover plate spring.

[0008] The first support member includes a stepped housing, the housing comprising: The upper housing has a support cover fixed on its top, a support spring provided inside the upper housing, and an end plate at the bottom end of the upper vertical telescopic rod is movably arranged in a cavity surrounded by the upper housing and the support cover, and the end plate is in contact with the support spring; The lower shell is smaller than the upper shell and is fixedly connected to the vertical telescopic rod below.

[0009] The top ends of the arched telescopic rods except the topmost arched telescopic rod are fixed with end plates, the upper ends of the arched telescopic rods except the topmost arched telescopic rod are provided with locking mechanisms, and the lower ends of the arched telescopic rods except the bottommost arched telescopic rod are provided with second telescopic support members; The size of each section of the arched telescopic rod increases from top to bottom, and the upper vertical telescopic rod is slidably arranged in the lower vertical telescopic rod; The arched telescopic rod at the bottom is fixedly connected to the vertical telescopic rod at the top via a connecting sleeve; The end plate of the arched telescopic rod is movably arranged in the second telescopic support member adjacent to the upper portion.

[0010] The connecting sleeve includes: End steel plates; The upper vertical steel plate is fixed to the upper surface of the end steel plate, covers the outer side of the upper arched telescopic rod, and is fixedly connected to the arched telescopic rod; The lower vertical steel plate is fixed on the lower surface of the end steel plate, covers the outer side of the lower vertical telescopic rod, and is fixedly connected to the vertical telescopic rod.

[0011] The second telescopic support member includes a stepped connecting shell, the connecting shell including: The upper connecting shell is smaller than the lower connecting shell and is fixedly connected to the upper arched telescopic rod; The lower connecting shell has a connecting cover fixed at its bottom, a spring is arranged inside the lower connecting shell, and the end plate at the top end of the lower arched telescopic rod is movably arranged in a cavity surrounded by the lower connecting shell and the connecting cover, and the end plate is in contact with the spring.

[0012] The closure mechanism includes: An outer steel pipe is provided on the outer side of the ring at the connection end of the two arched telescopic rods at the top end; An inner steel pipe is disposed inside the connection ends of the two arched telescopic rods at the top; The bolts pass through the outer lever, the arched telescopic rod and the inner steel pipe in sequence to achieve fixed connection between the outer steel pipe, the arched telescopic rod and the inner steel pipe.

[0013] The present application also discloses a method for installing the telescopic rockfall protection shed tunnel, comprising the following steps: S1. Assembly of the shed foundation and vertical telescopic rod: Fix the base to the installation position, extend each vertical telescopic rod of the vertical telescopic part to the maximum length, and fix the position of the connection between two adjacent vertical telescopic rods by the locking mechanism; S2. Installation of the first telescopic support member on the vertical telescopic rod: The first telescopic support is fixedly connected to the lower vertical telescopic rod, and the end plate at the bottom of the upper vertical telescopic rod is movably disposed in the first telescopic support and in contact with the support spring; S3. Installation of connecting sleeve: Fix the connecting sleeve to the top of the uppermost vertical telescopic rod; S4. Installation of arch telescopic rod: Each arched telescopic rod of the arched telescopic portion is extended, and a locking mechanism is used to fix the position of the connection between two adjacent arched telescopic rods, and the bottom end of the lowest arched telescopic rod is fixedly connected to the connecting sleeve; S5. Installation of the second telescopic support member on the arched telescopic rod: The second telescopic support is fixedly connected to the upper arched telescopic rod, and the end plate at the top end of the lower arched telescopic rod is movably arranged in the second telescopic support and in contact with the spring; S6. Installation of closure mechanism; S7. Lay the elastic shed net on the outside of the shed hole support.

[0014] In step S1, the end plate of the bottommost vertical telescopic rod is placed into the base, and the top cover plate is fixed on the base. The end plate of the vertical telescopic rod is limited between the bottom spring and the cover plate spring to achieve a movable connection between the vertical telescopic rod and the base; In step S2, the first telescopic support member is wrapped and installed at the connection node of two adjacent vertical telescopic rods; Adjust the locking mechanism to adjust the position of the upper vertical telescopic rod so that the end plate at the bottom of the upper vertical telescopic rod just falls on the support spring inside the first telescopic support member; A support cover is fixedly provided on the top surface of the upper housing to limit the end plate of the upper vertical telescopic rod in the cavity of the upper housing; In step S5, the second telescopic support member is wrapped and installed at the connection node of two adjacent arched telescopic rods; Adjust the locking mechanism to adjust the position of the lower arched telescopic rod so that the end plate at the top of the lower arched telescopic rod contacts or connects with the spring inside the second telescopic support member; A connecting cover is fixedly provided on the bottom surface of the lower connecting shell to limit the end plate of the lower arched telescopic rod in the cavity of the lower connecting shell; In step S6, inner steel pipes are installed in the rods at the adjacent ends of the two arched telescopic rods at the top, and outer steel pipes are installed on the outsides of the adjacent ends. Bolts are passed through the bolt holes on the outer steel pipe, the arched telescopic rod, and the inner steel pipe in sequence, thereby completing the installation of the joint mechanism.

[0015] The beneficial effects of the present invention are: (1) The present invention uses telescopic rods to form the main body of the rockfall protection shed tunnel. The telescopic rods take up less space and are easy to transport. The overall structure is simple and quick to install, effectively reducing the installation cost of the rockfall protection shed tunnel. (2) The telescopic rod used in the present invention can flexibly adjust the protection height and has strong adaptability. The length of the telescopic rod can be flexibly adjusted according to actual conditions to provide effective protection; (3) The present invention has a reasonable structure and stable stress. The vertical telescopic rod mainly bears pressure, and the arched telescopic rod mainly bears bending moment. The reasonable structure enables the invention to effectively withstand the loads it is subjected to during service. (4) The present invention provides springs as energy dissipation devices at the base and telescopic supports, which can effectively absorb the large kinetic energy of high-speed falling rocks and effectively prevent the structure from being damaged by excessive impact force.

[0016] Therefore, the present invention proposes a telescopic rockfall protection shed tunnel, which aims to achieve the purpose of rapid installation and reduce construction costs by applying a telescopic rod to the implementation of the protection shed tunnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural diagram of the shed hole support of the present invention after the elastic shed net is installed on the outside; Figure 2 This is a schematic diagram of the overall structure of the shed hole support of the present invention; Figure 3 It is a structural schematic diagram of the arch frame of the present invention; Figure 4 This is a schematic diagram of the expanded structure of the shed cave foundation of the present invention; Figure 5 It is a structural diagram of the shed cave foundation of the present invention; Figure 6 It is a structural schematic diagram of the vertical telescopic rod of the present invention in a retracted state; Figure 7 It is a structural schematic diagram of the vertical telescopic rod of the present invention in an extended state; Figure 8 This is a structural schematic diagram of the arched telescopic rod of the present invention in a retracted state; Figure 9 This is a structural schematic diagram of the arched telescopic rod of the present invention in an extended state; Figure 10 It is a structural schematic diagram of the locking mechanism of the present invention; Figure 11 It is a structural schematic diagram of the connecting sleeve of the present invention; Figure 12 The present invention is a schematic diagram of the explosion structure of the first telescopic support member; Figure 13 Is a schematic structural diagram of the present invention, the first telescopic support member; Figure 14 This is a schematic structural diagram of the outer steel pipe of the closure mechanism of the present invention; Figure 15 This is a schematic structural diagram of the inner steel pipe of the closure mechanism of the present invention; Figure 16 This is a schematic diagram of the installation of the closure device of the present invention; Among them, 1-shed foundation, 1.1-foundation base, 1.2-bottom spring, 1.3-top cover, 1.4-cover spring, 2-vertical telescopic rod, 2.2-vertical telescopic rod end plate, 3-arched telescopic rod, 3.2-arched telescopic rod end plate, 4-connecting sleeve, 4.1-end steel plate, 4.2-upper vertical steel plate, 4.3-lower vertical steel plate, 5-first telescopic support, 5.1-outer shell, 5.2-support spring, 5.3-support cover, 6-joining mechanism, 6.1-outer steel pipe, 6.2-inner steel pipe, 7-longitudinal connecting rod, 8-bolt hole, 9-locking mechanism, 10-elastic shed net, 11-second telescopic support. DETAILED DESCRIPTION

[0018] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0019] The following description sets forth specific details to facilitate a thorough understanding of the present invention. However, the present invention can be implemented in a variety of other ways than those described herein, and those skilled in the art will be able to make similar generalizations without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0020] like Figure 1 and Figure 2 As shown, the telescopic rockfall protection tunnel described in the present invention includes a tunnel support and an elastic net 10 covering the outside of the tunnel support. The tunnel support includes several arches spaced apart along the length of the railway tunnel, and the arches are fixedly connected by several longitudinal connecting rods 7.

[0021] In this embodiment, the bottoms of the two sides of the plurality of spaced-apart arches and the two sides of the top of the arches are fixedly connected by longitudinal connecting rods 7, thereby fixing the arches together.

[0022] like Figure 3 As shown, the two sides of the arch frame are respectively located on both sides of the railway tunnel, including a shed foundation 1, a vertical telescopic part and an arched telescopic part, wherein the shed foundation 1 is located at the bottom of both sides of the arch frame and on the outside of both sides of the railway tunnel, the bottom ends of the vertical telescopic parts on both sides are respectively connected to the shed foundation, the top ends of the vertical telescopic parts on both sides are respectively connected to the arched telescopic parts, and the arched telescopic parts on both sides are connected at the top of the arch frame through a joint mechanism.

[0023] like Figure 4 and Figure 5 As shown, the shed foundation 1 includes a box-shaped base 1.1 with a cover plate 1.3 fixed to the top. The base 1.1 and the cover plate 1.3 form a foundation chamber. The bottom of the vertical telescopic section passes through the cover plate, and the end plate at the bottom of the vertical telescopic section is movably disposed within the foundation chamber. The cover plate 1.3 is provided with a through hole to facilitate the bottom end of the vertical telescopic section to pass through the through hole and position the cover plate within the base.

[0024] A bottom spring 1.2 is fixed to the upper surface of the base 1.1, and a cover spring 1.4 is provided at the bottom of the cover 1.3. The end plate at the bottom of the vertical telescopic portion is located above the bottom spring 1.2 and below the cover spring 1.4, that is, the end plate is constrained between the bottom spring 1.2 and the cover spring 1.4.

[0025] When the protective shed hole is subjected to impact force, the end plate moves in the base chamber. When the end plate moves downward under the action of the impact load, the end plate generates downward pressure on the bottom spring 1.2. When the impact load acting on the end plate disappears, or when the end plate receives an upward impact load, the end plate moves upward under the action of the elastic force in the bottom spring 1.2, and at this time the end plate directly contacts the cover plate spring 1.4. By providing the bottom spring 1.2 and the cover plate spring 1.4, the kinetic energy of the rockfall impact can be converted into the elastic potential energy of the spring, thereby reducing the impact deformation of the vertical telescopic part and the arched telescopic part, so that the entire protective shed hole can withstand a larger impact load, and the end plate can be prevented from directly colliding with the base chamber and the cover plate during movement, thereby playing a buffering role and protecting the base chamber and the cover plate.

[0026] The vertical telescopic section consists of several vertical telescopic rods 2 connected in sequence. The bottom end of the lowest vertical telescopic rod is connected to the shed foundation, while the top end of the highest vertical telescopic rod is connected to the arched telescopic section. Each vertical telescopic rod is secured with a vertical telescopic rod end plate 2.2 at its base, allowing the top end of the rod to be inserted into the adjacent vertical telescopic rod above it. As a result, the length of the vertical telescopic rods in the vertical telescopic section decreases from top to bottom.

[0027] like Figure 6 The vertical telescopic portion is shown in a retracted state, and the vertical telescopic rod below is inserted into the vertical telescopic rod above it. When the components of the entire protective shed are in a transport state, the vertical telescopic portion is in a retracted state, and the height of the vertical telescopic portion is relatively small, which is convenient for transportation.

[0028] like Figure 7 The vertical telescopic section is shown in an extended state, with each of its vertical telescopic rods in an extended state. The ends of two adjacent vertical telescopic rods are connected by a first telescopic support member 5, which is fixed to the top of each vertical telescopic rod. The end plate at the bottom of the lowest vertical telescopic rod is movably mounted within the shed foundation, while the end plates at the bottoms of the remaining vertical telescopic rods are movably mounted within the first telescopic support member 5 below them, thereby achieving a movable connection between the adjacent vertical telescopic rods.

[0029] like Figure 12 and Figure 13 As shown, the first telescopic support member 5 includes a stepped housing 5.1, comprising an upper housing and a lower housing, with the upper housing being larger than the lower housing. Both the upper and lower housings have cavities within them. The bottom end plate of the upper vertical telescopic rod is movably disposed within the cavity of the upper housing. The lower housing wraps around the upper outer portion of the lower vertical telescopic rod and is fixedly connected to the rod.

[0030] A support cover 5.3 is fixed to the top surface of the upper housing. This cover is provided with a through-hole to allow the bottom of the upper vertical telescopic rod to pass through the through-hole and into the upper housing. The end plate at the bottom of the upper vertical telescopic rod is movably mounted within the cavity formed by the support cover 5.3 and the upper housing, with the support cover 5.3 acting as a position limiter for the end plate. A support spring 5.2 is installed within the upper housing and connects to the end plate of the vertical telescopic rod.

[0031] When the upper vertical telescopic rod is subjected to an impact load, the end plate moves within the cavity of the upper shell, and the support spring 5.2 is deformed accordingly, thereby converting the impact load into elastic deformation of the spring. The impact force on the vertical telescopic rod is reduced, thereby reducing the impact deformation of the vertical telescopic rod and enabling the vertical telescopic rod to withstand a greater impact load.

[0032] The lower housing is securely connected to the upper ends of the vertical telescopic rods via bolts. This transfers pressure at the junction between adjacent vertical telescopic rods, preventing them from retracting. Correspondingly, bolt holes are provided in the lower housing and the upper ends of the vertical telescopic rods. Bolts pass through these holes, securing the connection between the lower housing and the rods.

[0033] In this embodiment, the shell of the first telescopic support member 5 is composed of symmetrical left and right shells. The left shell and the right shell are both arranged in a stepped shape. After the left shell and the right shell are connected, they can form an integral shell.

[0034] At the same time, a locking mechanism 9 is provided at the connection between the ends of the two adjacent vertical telescopic rods, and the locking mechanism 9 is provided at the lower part of the vertical telescopic rod. Figure 10 Clamp shown.

[0035] When the vertical telescopic portion is in the extended state, the locking mechanism 9 is in the locked state, which plays an auxiliary role in the connection between the two adjacent vertical telescopic rods. Figure 6 In the retracted state shown in FIG, the locking mechanism 9 is in a locked state, and the locking mechanism is used to achieve a fixed connection between two adjacent vertical telescopic rods in the retracted state, fixing the vertical telescopic portion as shown in FIG. Figure 6 The state shown prevents telescopic movement between two adjacent vertical telescopic rods, thereby facilitating the transportation of the vertical telescopic part.

[0036] The arched telescopic section comprises several sequentially connected arched telescopic rods 3. The lower end of the upper arched telescopic rod can be inserted into the adjacent arched telescopic rod below it, resulting in the arched telescopic rods gradually increasing in size from top to bottom. The lowest arched telescopic rod is connected to the vertical telescopic section via a connecting sleeve 4. The two arched telescopic rods at the top of the arched telescopic sections on either side are connected by a joint mechanism 6. The ends of the remaining adjacent arched telescopic rods are connected by a second telescopic support member 11. Except for the arched telescopic rod at the top, the top of each arched telescopic rod is fixed with an arched telescopic rod end plate 3.2.

[0037] The arched telescopic rod at the bottom is fixedly connected to the vertical telescopic rod at the top through the connecting sleeve 4. Figure 11 As shown, the connecting sleeve 4 comprises an end steel plate 4.1, an upper vertical steel plate 4.2 fixed to the upper surface of the end steel plate, and a lower vertical steel plate 4.3 fixed to the lower surface of the end steel plate. The upper vertical steel plate 4.2 is bolted to the lower end of the arched telescopic rod, and corresponding bolt holes are provided in both the lower end of the arched telescopic rod and the upper vertical steel plate. The lower vertical steel plate 4.3 is bolted to the upper end of the vertical telescopic rod, and corresponding bolt holes are provided in both the lower vertical steel plate and the upper end of the vertical telescopic rod.

[0038] The two arched telescopic rods at the top of the arched telescopic parts on both sides are fixedly connected by a joint mechanism 6. Figures 14 to 16 As shown, the closure mechanism includes an outer steel tube 6.1 and an inner steel tube 6.2. The outer steel tube 6.1 is positioned outside the connection between the two arched telescopic rods at the top, while the inner steel tube 6.2 is positioned inside the connection between the two arched telescopic rods at the top, i.e., the inner steel tube is positioned inside the two arched telescopic rods. Bolt holes are provided in the outer steel tube, the ends of the two arched telescopic rods, and the inner steel tube. Bolts pass through the bolt holes in the outer steel tube, the arc-shaped telescopic tube, and the inner steel tube in sequence, thereby achieving a fixed connection between the two arched telescopic rods at the top and between the arched telescopic sections on both sides. The combined action of the inner and outer steel tubes effectively prevents the arched telescopic rods from buckling due to large bending moments.

[0039] Figure 8 The arched telescopic portion is in a retracted state, and the arched telescopic rod on top is inserted into the arched telescopic rod on its adjacent bottom. When the arched telescopic portion is in a transport state, the arched telescopic portion is in a retracted state for the convenience of transportation.

[0040] Figure 9The arched telescopic portion is in an extended state. Each arched telescopic rod is in an extended state, and the ends of two adjacent arched telescopic rods are connected by a second telescopic support member 11. The second telescopic support member 11 is fixed to the lower ends of all arched telescopic rods except the lowest arched telescopic rod. The end plate at the top of the arched telescopic rod is movably mounted within the second telescopic support member 11 above it, thus achieving a movable connection between the two adjacent arched telescopic rods.

[0041] The second telescopic support member has the same structure as the first telescopic support member 5, including a stepped connecting housing comprising an upper connecting housing and a lower connecting housing, with the upper connecting housing being smaller than the lower connecting housing. Both the upper and lower connecting housings have cavities within them, and the end plate at the top of the lower arched telescopic rod is movably mounted within the cavity of the lower connecting housing. The upper connecting housing wraps around the lower end of the upper arched telescopic rod and is fixedly connected to it.

[0042] A connecting cover is fixed to the bottom surface of the lower connecting housing. The top end of the arched telescopic rod extends through a through-hole in the connecting cover and into the lower connecting housing. The end plate at the top of the lower vertical telescopic rod is movably mounted within the cavity enclosed by the connecting cover and the lower connecting housing, with the connecting cover acting as a position limiter for the end plate. A spring is housed within the lower connecting housing and connects to the end plate of the arched telescopic rod.

[0043] When the upper arched telescopic rod is subjected to an impact load, the position of the end plate in the lower connecting shell changes, and the end plate contacts the spring, causing the spring to deform accordingly, thereby converting the impact load into elastic deformation of the spring, reducing the impact force on the arched telescopic rod, thereby reducing the impact deformation of the arched telescopic rod and enabling the arched telescopic rod to withstand a greater impact load.

[0044] The upper connecting housing is securely connected to the lower ends of the arched telescopic rods via bolts. This transfers pressure at the joints between adjacent arched telescopic rods, preventing them from retracting. Bolts pass through corresponding bolt holes in the upper connecting housing and the lower ends of the arched telescopic rods, securing the connection between the upper connecting housing and the arched telescopic rods.

[0045] In this embodiment, the connecting shell of the second telescopic support member is composed of symmetrical left and right connecting shells. The left connecting shell and the right connecting shell are both arranged in a stepped manner. After the left connecting shell and the right connecting shell are docked, an integral connecting shell can be formed.

[0046] The connection between the two adjacent arched telescopic rods is provided with a locking mechanism 9, which is arranged at the upper end of the arched telescopic rod. The locking mechanism in this embodiment can be adopted as follows Figure 10 Clamp shown.

[0047] When the arch telescopic portion is in the extended state, the locking mechanism 9 is in the locked state, which plays an auxiliary role in the fixed connection between the two adjacent arch telescopic rods. Figure 8 In the retracted state shown in FIG, the locking mechanism 9 is in a locked state, and the locking mechanism is used to achieve a fixed connection between the two adjacent arched telescopic rods in the retracted state, fixing the arched telescopic portion as shown in FIG. Figure 8 The state shown prevents telescopic movement between two adjacent arched telescopic rods, thereby facilitating the transportation of the arched telescopic part.

[0048] The present invention also provides a method for installing the telescopic rockfall protection shed tunnel, which specifically includes the following steps.

[0049] The first step is to assemble the shed foundation and the vertical telescopic rod.

[0050] The basic base 1.1 is fixed at the installation position, each vertical telescopic rod of the vertical telescopic part is extended to the maximum length, and the position of the connection between two adjacent vertical telescopic rods is fixed by the locking mechanism 9.

[0051] The end plate of the bottom vertical telescopic rod is placed in the basic base 1.1, and the top cover plate 1.3 is fixed on the basic base 1.1, so that the end plate of the vertical telescopic rod is limited between the bottom spring 1.2 and the cover spring 1.4, realizing the movable connection between the vertical telescopic rod and the basic base 1.1.

[0052] The second step is to install the first telescopic support member on the vertical telescopic rod.

[0053] The left and right side shells of the first telescopic support are wrapped and installed at the connection nodes of two adjacent vertical telescopic rods, and the fixed connection between the first telescopic support and the vertical telescopic rod below is achieved by bolts.

[0054] Adjust the locking mechanism to adjust the position of the upper vertical telescopic rod so that the end plate at the bottom of the upper vertical telescopic rod just falls on the support spring inside the first telescopic support member.

[0055] A support cover is fixedly provided on the top surface of the upper shell to limit the end plate of the upper vertical telescopic rod in the cavity of the upper shell.

[0056] Step 3: Installation of the connecting sleeve.

[0057] The lower vertical steel plate of the connecting sleeve is fixedly connected to the top end of the uppermost vertical telescopic rod by means of bolts.

[0058] Step 4: Installation of the arch telescopic rod.

[0059] The arched telescopic rods of the arched telescopic portion are made to be in an extended state, and a locking mechanism is used to fix the position of the connection between two adjacent arched telescopic rods.

[0060] The bottom end of the lowest arched telescopic rod is fixedly connected to the upper vertical steel plate of the connecting sleeve by bolts.

[0061] Step 5: Install the second telescopic support member on the arched telescopic rod.

[0062] The left and right connecting shells of the second telescopic support member are wrapped and installed at the connection nodes of the two adjacent arched telescopic rods, and the fixed connection between the second support member and the upper arched telescopic rod is achieved by bolts.

[0063] Adjust the locking mechanism to adjust the position of the lower arched telescopic rod so that the end plate at the top of the lower arched telescopic rod contacts or connects with the spring inside the second telescopic support member.

[0064] A connecting cover plate is fixedly provided on the bottom surface of the lower connecting shell, and the end plate of the lower arched telescopic rod is limited in the cavity of the lower connecting shell.

[0065] Step 6: Installation of the joint mechanism.

[0066] An inner steel pipe is installed on the inner side of the adjacent ends of the two arched telescopic rods at the top, and an outer steel pipe is installed on the outer side of the adjacent ends. Bolts pass through the bolt holes on the outer steel pipe, the arched telescopic rod, and the inner steel pipe in sequence, thereby completing the installation of the joint mechanism and realizing the fixed connection of the arched telescopic parts on both sides.

[0067] The installation of the shed hole bracket is now completed.

[0068] Finally, the elastic shed net is laid on the outside of the shed hole bracket, thus completing the installation of the protective shed hole.

[0069] The above is a detailed introduction to a telescopic rockfall protection shed tunnel and its installation method provided by the present invention. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention. The above description of the disclosed embodiments enables professionals in this field to implement or use the present invention. Various modifications to these embodiments will be obvious to professionals in this field, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A telescopic rockfall protection shed tunnel, characterized in that: The tunnel support comprises a plurality of arch frames spaced apart along the length of the tunnel, and the arch frames are fixedly connected by longitudinal connecting rods; the arch frames include: Shed tunnel foundation is located outside the tunnel and is set at intervals on both sides along the tunnel direction; The vertical telescopic part is connected to the shed hole foundation and includes several vertical telescopic rods connected in sequence up and down. The vertical telescopic rod at the lowest end is movably connected to the shed hole foundation. Two adjacent vertical telescopic parts are connected by a first telescopic support member. The arched telescopic part is located at the top of the arch frame and includes several arched telescopic rods connected in sequence. The arched telescopic rod at the bottom is fixedly connected to the vertical telescopic rod at the top. The two arched telescopic rods at the top of the two arched telescopic parts are connected by a joint mechanism, and the adjacent arched telescopic rods are connected by a second telescopic support member.

2. The telescopic rockfall protection shed tunnel according to claim 1, characterized in that: The bottom end of the vertical telescopic rod is fixed with an end plate, the lower end of the vertical telescopic rod is provided with a locking mechanism, and the upper parts of the vertical telescopic rods except the uppermost vertical telescopic rod are fixed with a first telescopic support member; The size of each section of the vertical telescopic rod decreases from top to bottom, and the lower vertical telescopic rod is slidably arranged in the upper vertical telescopic rod; The end plate of the lowest vertical telescopic rod is movably arranged in the shed hole foundation, and the plates of other vertical telescopic rods are movably arranged in the first telescopic support member adjacent below.

3. The telescopic rockfall protection shed tunnel according to claim 1, characterized in that: The shed cave foundation comprises: The basic base is box-shaped, and a bottom spring is fixed to the upper surface of the bottom; The cover plate is fixed on the top of the basic base, and a cover plate spring is fixed on its lower surface. The bottom end of the lowest vertical telescopic rod passes through the through hole on the cover plate and extends into the basic base, and the end plate fixed to the bottom end of the vertical telescopic rod is arranged between the bottom spring and the cover plate spring.

4. The telescopic rockfall protection shed tunnel according to claim 1, characterized in that: The first support member includes a stepped housing, the housing comprising: The upper housing has a support cover fixed on its top, a support spring provided inside the upper housing, and an end plate at the bottom end of the upper vertical telescopic rod is movably arranged in a cavity surrounded by the upper housing and the support cover, and the end plate is in contact with the support spring; The lower shell is smaller than the upper shell and is fixedly connected to the vertical telescopic rod below.

5. The telescopic rockfall protection shed tunnel according to claim 1, characterized in that: The top ends of the arched telescopic rods except the topmost arched telescopic rod are fixed with end plates, the upper ends of the arched telescopic rods except the topmost arched telescopic rod are provided with locking mechanisms, and the lower ends of the arched telescopic rods except the bottommost arched telescopic rod are provided with second telescopic support members; The size of each section of the arched telescopic rod increases from top to bottom, and the upper vertical telescopic rod is slidably arranged in the lower vertical telescopic rod; The arched telescopic rod at the bottom is fixedly connected to the vertical telescopic rod at the top via a connecting sleeve; The end plate of the arched telescopic rod is movably arranged in the second telescopic support member adjacent to the upper portion.

6. The telescopic rockfall protection shed tunnel according to claim 5, characterized in that: The connecting sleeve includes: End steel plates; The upper vertical steel plate is fixed to the upper surface of the end steel plate, covers the outer side of the upper arched telescopic rod, and is fixedly connected to the arched telescopic rod; The lower vertical steel plate is fixed on the lower surface of the end steel plate, covers the outer side of the lower vertical telescopic rod, and is fixedly connected to the vertical telescopic rod.

7. The telescopic rockfall protection shed tunnel according to claim 1, characterized in that: The second telescopic support member includes a stepped connecting shell, the connecting shell including: The upper connecting shell is smaller than the lower connecting shell and is fixedly connected to the upper arched telescopic rod; The lower connecting shell has a connecting cover fixed at its bottom, a spring is arranged inside the lower connecting shell, and the end plate at the top end of the lower arched telescopic rod is movably arranged in a cavity surrounded by the lower connecting shell and the connecting cover, and the end plate is in contact with the spring.

8. The telescopic rockfall protection shed tunnel according to claim 1, characterized in that: The closure mechanism includes: An outer steel pipe is provided on the outer side of the ring at the connection end of the two arched telescopic rods at the top end; An inner steel pipe is disposed inside the connection ends of the two arched telescopic rods at the top; The bolts pass through the outer lever, the arched telescopic rod and the inner steel pipe in sequence to achieve fixed connection between the outer steel pipe, the arched telescopic rod and the inner steel pipe.

9. A method for installing a telescopic rockfall protection shed tunnel according to any one of claims 1 to 8, characterized in that: The following steps are included: S1. Assembly of the shed foundation and vertical telescopic rod: Fix the base to the installation position, extend each vertical telescopic rod of the vertical telescopic part to the maximum length, and fix the position of the connection between two adjacent vertical telescopic rods by the locking mechanism; S2. Installation of the first telescopic support member on the vertical telescopic rod: The first telescopic support is fixedly connected to the lower vertical telescopic rod, and the end plate at the bottom of the upper vertical telescopic rod is movably disposed in the first telescopic support and in contact with the support spring; S3. Installation of connecting sleeve: Fix the connecting sleeve to the top of the uppermost vertical telescopic rod; S4. Installation of arch telescopic rod: Each arched telescopic rod of the arched telescopic portion is extended, and a locking mechanism is used to fix the position of the connection between two adjacent arched telescopic rods, and the bottom end of the lowest arched telescopic rod is fixedly connected to the connecting sleeve; S5. Installation of the second telescopic support member on the arched telescopic rod: The second telescopic support is fixedly connected to the upper arched telescopic rod, and the end plate at the top end of the lower arched telescopic rod is movably arranged in the second telescopic support and in contact with the spring; S6. Installation of closure mechanism; S7. Lay the elastic shed net on the outside of the shed hole support.

10. The installation method according to claim 9, characterized in that: In step S1, the end plate of the bottommost vertical telescopic rod is placed into the base, and the top cover plate is fixed on the base. The end plate of the vertical telescopic rod is limited between the bottom spring and the cover plate spring to achieve a movable connection between the vertical telescopic rod and the base; In step S2, the first telescopic support member is wrapped and installed at the connection node of two adjacent vertical telescopic rods; Adjust the locking mechanism to adjust the position of the upper vertical telescopic rod so that the end plate at the bottom of the upper vertical telescopic rod just falls on the support spring inside the first telescopic support member; A support cover is fixedly provided on the top surface of the upper housing to limit the end plate of the upper vertical telescopic rod in the cavity of the upper housing; In step S5, the second telescopic support member is wrapped and installed at the connection node of two adjacent arched telescopic rods; Adjust the locking mechanism to adjust the position of the lower arched telescopic rod so that the end plate at the top of the lower arched telescopic rod contacts or connects with the spring inside the second telescopic support member; A connecting cover is fixedly provided on the bottom surface of the lower connecting shell to limit the end plate of the lower arched telescopic rod in the cavity of the lower connecting shell; In step S6, inner steel pipes are installed in the rods at the adjacent ends of the two arched telescopic rods at the top, and outer steel pipes are installed on the outsides of the adjacent ends. Bolts are passed through the bolt holes on the outer steel pipe, the arched telescopic rod, and the inner steel pipe in sequence, thereby completing the installation of the joint mechanism.

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