Corner protection device for inverted arch and U-shaped drainage channel

Abstract

This application provides a corner protection device for an inverted arch and a U-shaped drainage channel. The guard strip includes a first guard plate and a second guard plate connected at one end. The shape of the guard strip conforms to the corner to be protected, and the guard strip covers the corner to be protected. Multiple telescopic mechanisms are connected in two groups between adjacent guard strips. The telescopic mechanism includes a telescopic tube and a telescopic rod. In two adjacent guard strips, the telescopic tube is located on one guard strip, and the telescopic rod is located on the other guard strip. The telescopic rod is inserted into the telescopic tube. A locking mechanism is located between the corresponding telescopic rod and the telescopic tube. When the locking mechanism is locked, the telescopic rod is fixed relative to the telescopic tube. In this application, the shape of the guard strip conforms to the corner to be protected. By having two guard plates abut against the two contact surfaces of the corner, an "L"-shaped wrapping structure is formed, completely covering the corner and effectively isolating it from direct impact with the support rod, preventing the corner concrete from cracking or being damaged due to impact.

Description

Technical Field

[0001] This application belongs to the field of protective equipment technology, and more specifically, it relates to a corner protection device for an inverted arch and a U-shaped drainage channel. Background Technology

[0002] The inverted arch is located at the bottom of the tunnel, and is connected to the arch walls (the walls on both sides of the tunnel) to form a closed ring structure. Essentially, the inverted arch is the bottom part of the secondary lining of the tunnel, and together with the arch crown and sidewalls, it constitutes the permanent support structure of the tunnel.

[0003] A drainage channel is provided at the top of the invert arch. The drainage channel is a groove-shaped drainage facility set along the longitudinal direction of the tunnel. It is usually constructed at the same time as the invert arch structure and is a core component of the tunnel's waterproofing and drainage system. It is used to guide the accumulated water within the invert arch area into the main drainage network.

[0004] However, during the construction of the secondary lining above the invert, some support rods will be supported on the top of the invert. During the installation and dismantling of the support rods, damage to the drainage channel or the corners of the invert is often caused. Utility Model Content

[0005] The purpose of this application is to provide a corner protection device for the invert arch and U-shaped drainage channel, so as to protect the corners of the drainage channel and the invert arch during the secondary lining construction and prevent damage to the corners of the drainage channel and the invert arch.

[0006] To achieve the above objectives, the technical solution adopted in this application is as follows: A corner protection device for an inverted arch and a U-shaped drainage channel is provided, comprising three guard strips, multiple telescopic mechanisms, and multiple locking mechanisms. Each guard strip includes a first guard plate and a second guard plate connected at one end. The shape of the guard strip conforms to the corner to be protected. The first guard plate abuts against one of the contact surfaces forming the corner, and the second guard plate abuts against the other contact surface forming the corner, so that the guard strip covers the corner to be protected. Multiple telescopic mechanisms are connected in two groups between adjacent guard strips. Each telescopic mechanism includes a telescopic tube and a telescopic rod. In two adjacent guard strips, the telescopic tube is located on one guard strip, and the telescopic rod is located on the other guard strip, with the telescopic rod inserted into the telescopic tube. Multiple locking mechanisms correspond one-to-one with each telescopic mechanism. Each locking mechanism is located between the corresponding telescopic rod and the telescopic tube. When the locking mechanism is locked, the telescopic rod is fixed relative to the telescopic tube.

[0007] In one possible implementation, the first guard plate is arranged horizontally, and a mounting block is provided on the first guard plate. Both ends of the mounting block are provided with insertion holes, and the mounting block is provided with a first fixing hole. The first fixing hole is arranged perpendicular to the insertion hole and passes through the insertion hole. The top ends of the telescopic tube and the telescopic rod are provided with mounting rods. The telescopic rod is provided with a second fixing hole extending radially along the telescopic rod. The mounting rod is inserted into the insertion hole, and bolts are screwed into the corresponding second fixing hole and the first fixing hole.

[0008] In one possible implementation, the locking mechanism includes a cross groove and a reducing diameter assembly, wherein the cross groove is formed on the telescopic tube and extends along the axial direction of the telescopic tube, and the cross groove divides the portion of the telescopic tube near the top end into four clamping blocks; the reducing diameter assembly is clamped to the outer wall of the clamping blocks, and the clamping blocks can be clamped to the outer wall of the telescopic rod by the clamping of the reducing diameter assembly.

[0009] In one possible implementation, the reducing diameter assembly includes a reducing ring, a first thread, and a locking ring. The reducing ring is disposed on the side wall of the telescopic tube near its top end. The diameter of the end of the reducing ring away from the top end of the telescopic tube is the same as the diameter of the telescopic tube, and the diameter of the other end of the reducing ring is larger than the diameter of the telescopic tube. The first thread is disposed on the outer wall of the telescopic tube, and the inner wall of the locking ring is provided with a second thread adapted to the first thread. The locking ring is screwed onto the telescopic tube. The end of the locking ring near the reducing ring is provided with a reducing ring. The reducing ring can abut against the side wall of the reducing ring due to the rotation of the locking ring, so that the clamping block abuts against the side wall of the telescopic rod.

[0010] In one possible implementation, the inner hole of the reduced diameter ring is a variable diameter hole, so that the inner wall of the reduced diameter ring is adapted to the outer wall of the variable diameter ring, and the inner wall of the reduced diameter ring abuts against the outer wall of the variable diameter ring.

[0011] In one possible implementation, the inner wall of the clamping block is provided with a clamping rubber layer, which abuts against the side wall of the telescopic rod.

[0012] In one possible implementation, a fixing protrusion is provided on the outer wall of the telescopic rod, and the fixing protrusion is embedded in the rubber layer due to the clamping of the clamping block.

[0013] In one possible implementation, the outer wall of the locking ring is provided with a plurality of gripping protrusions.

[0014] In one possible implementation, the sidewalls of the first and second protective plates are provided with rubber damping layers, which abut against the contact surfaces of the corners to be protected.

[0015] The beneficial effects of the corner protection device for the invert arch and U-shaped drainage channel provided in this application are as follows: Compared with the prior art, the guard strip in this application is composed of a first guard plate and a second guard plate connected to each other. The shape follows the shape of the corner to be protected. The two guard plates can abut against the two contact surfaces of the corner to form an "L"-shaped wrapping structure, which completely covers the corner and effectively isolates it from direct impact of the support rod, avoiding cracks or damage to the corner concrete due to impact. Adjacent guard strips are connected by telescopic pipes and telescopic rods. The overall span of the protection device can be flexibly adjusted according to the actual size and shape of the invert arch or drainage channel, eliminating the need for customized production and improving the versatility and construction adaptability of the device. The locking mechanism can fix the telescopic rod and telescopic pipe after the telescopic mechanism is adjusted to a suitable position, preventing the protection device from shifting due to the squeezing or collision of the support rod during construction and ensuring the continuity of the protection effect. Attached Figure Description

[0016] 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.

[0017] Figure 1 A schematic diagram of the working structure of the corner protection device for the inverted arch and U-shaped drainage channel provided in the embodiments of this application;

[0018] Figure 2 for Figure 1 Enlarged view of part A;

[0019] Figure 3 A cross-sectional view of the locking mechanism provided in an embodiment of this application;

[0020] Figure 4 for Figure 3 Enlarged view of part B;

[0021] Figure 5 This is a schematic diagram of the structure of the telescopic tube provided in an embodiment of this application.

[0022] The labels for the attached figures are as follows:

[0023] 1. Protective strip; 2. Telescopic mechanism; 3. Locking mechanism;

[0024] 101. First protective plate; 102. Second protective plate; 103. Mounting block; 104. Insertion hole; 105. First fixing hole; 106. Rubber shock-absorbing layer;

[0025] 201. Telescopic tube; 202. Telescopic rod; 203. Mounting rod; 204. Second fixing hole; 205. Bolt; 206. Clamping rubber layer; 207. Fixing protrusion ring;

[0026] 301, cross groove; 302, reducing ring; 303, reducing assembly; 304, locking ring; 305, reducing ring; 306, gripping block. Detailed Implementation

[0027] 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.

[0028] It should be further noted that the accompanying drawings and embodiments of this application mainly describe the concept of this application. Based on this concept, some specific forms and arrangements of connection relationships, positional relationships, power mechanisms, power supply systems, hydraulic systems and control systems may not be fully described. However, under the premise that those skilled in the art understand the concept of this application, they can implement the above-mentioned specific forms and arrangements in a well-known manner.

[0029] When a component is referred to as "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 "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0030] The terms “length”, “width”, “up”, “down”, “front”, “back”, “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.

[0031] 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. Therefore, 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, and "several" means one or more, unless otherwise explicitly specified.

[0032] The corner protection devices for the invert arch and U-shaped drainage channel provided in this application will now be described.

[0033] Please refer to the following: Figures 1 to 5 The corner protection device for the inverted arch and U-shaped drainage ditch includes three guard strips 1, multiple telescopic mechanisms 2, and multiple locking mechanisms 3. Each guard strip 1 includes a first guard plate 101 and a second guard plate 102 connected at one end. The shape of the guard strip 1 conforms to the corner to be protected. The first guard plate 101 abuts against one of the contact surfaces forming the corner, and the second guard plate 102 abuts against the other contact surface forming the corner, so that the guard strip 1 covers the corner to be protected. The multiple telescopic mechanisms 2 are connected in two groups. Between adjacent guardrails 1, the telescopic mechanism 2 includes a telescopic tube 201 and a telescopic rod 202. In two adjacent guardrails 1, the telescopic tube 201 is provided on one guardrail 1, and the telescopic rod 202 is provided on the other guardrail 1. The telescopic rod 202 is inserted into the telescopic tube 201. Multiple locking mechanisms 3 correspond one-to-one with the telescopic mechanism 2. The locking mechanism 3 is provided between the corresponding telescopic rod 202 and the telescopic tube 201. When the locking mechanism 3 is locked, the telescopic rod 202 is fixed relative to the telescopic tube 201.

[0034] The beneficial effects of the corner protection device for the invert arch and U-shaped drainage channel provided in this embodiment are as follows: Compared with the prior art, the guard strip 1 in the corner protection device for the invert arch and U-shaped drainage channel provided in this embodiment is composed of a first guard plate 101 and a second guard plate 102 connected to each other. Its shape follows the shape of the corner to be protected. The two guard plates can abut against the two contact surfaces of the corner to form an "L"-shaped wrapping structure, which completely covers the corner and effectively isolates the direct impact of the support rod, avoiding cracks or damage to the corner concrete due to impact. Adjacent guard strips 1 are connected by telescopic pipes 201 and telescopic rods 202. The overall span of the protection device can be flexibly adjusted according to the actual size and shape of the invert arch or drainage channel, without the need for customized production, which improves the versatility and construction adaptability of the device. The locking mechanism 3 can fix the telescopic rod 202 and the telescopic pipe 201 after the telescopic mechanism 2 is adjusted to a suitable position, preventing the protection device from shifting due to the squeezing or collision of the support rod during construction, and ensuring the continuity of the protection effect.

[0035] like Figure 2 and Figure 3As shown, the first guard plate 101 is arranged horizontally, and a mounting block 103 is provided on the first guard plate 101. Both ends of the mounting block 103 are provided with insertion holes 104, and the mounting block 103 is provided with a first fixing hole 105. The first fixing hole 105 is arranged perpendicular to the insertion hole 104, and the first fixing hole 105 passes through the insertion hole 104. The top ends of the telescopic tube 201 and the telescopic rod 202 are provided with mounting rods 203. The telescopic rod 202 is provided with a second fixing hole 204 extending radially along the telescopic rod 202. The mounting rod 203 is inserted into the insertion hole 104, and the bolt 205 is screwed into the corresponding second fixing hole 204 and the first fixing hole 105.

[0036] The first guard plate 101 is inserted into the mounting rod 203 of the telescopic pipe 201 or telescopic rod 202 through the insertion hole 104 on the mounting block 103, and then bolts 205 are used to pass through the first fixing hole 105 and the second fixing hole 204 to lock it. This insertion and bolt 205 fixing method facilitates quick assembly and disassembly, and is especially suitable for frequent device relocation or repeated use in tunnel construction, reducing construction time.

[0037] The design of the two end holes 104 and the vertically arranged fixing holes of the mounting block 103 can ensure that the connection direction of the telescopic tube 201 and telescopic rod 202 with the guard strip 1 is accurate, avoiding blind spots in protection due to installation errors. At the same time, the bolts 205 can withstand a large lateral impact force to prevent the telescopic mechanism 2 from detaching from the guard strip 1.

[0038] Combination Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the locking mechanism 3 includes a cross groove 301 and a diameter reduction assembly 303. The cross groove 301 is formed on the telescopic tube 201 and extends along the axial direction of the telescopic tube 201. The cross groove 301 divides the part of the telescopic tube 201 near the top into four clamping blocks. The diameter reduction assembly 303 is clamped on the outer wall of the clamping blocks. The clamping blocks can be clamped on the outer wall of the telescopic rod 202 due to the clamping of the diameter reduction assembly 303.

[0039] The cross groove 301 at the top of the telescopic tube 201 divides it into four clamping blocks. When the diameter reduction component 303 clamps the outer wall of the clamping blocks, the four clamping blocks contract towards the center, evenly gripping the outer wall of the telescopic rod 202, avoiding the telescopic rod 202 from tilting or being damaged due to single-point force. At the same time, the clamping force can be adjusted by the tightness of the diameter reduction component 303 to adapt to telescopic rods 202 of different diameters.

[0040] The design of the cross groove 301 and the diameter reduction component 303 eliminates the need for complex parts. Construction personnel can achieve locking through manual operation. During maintenance, only the worn diameter reduction component 303 needs to be replaced, reducing maintenance difficulty and cost.

[0041] Specifically, the reducing diameter assembly 303 includes a reducing diameter ring 302, a first thread, and a locking ring 304. The reducing diameter ring 302 is located on the side wall of the telescopic tube 201 near the top end. The diameter of the end of the reducing diameter ring 302 away from the top end of the telescopic tube 201 is the same as the diameter of the telescopic tube 201, and the diameter of the other end of the reducing diameter ring 302 is larger than the diameter of the telescopic tube 201. The first thread is located on the outer wall of the telescopic tube 201. The inner wall of the locking ring 304 is provided with a second thread that matches the first thread. The locking ring 304 is screwed onto the telescopic tube 201. The end of the locking ring 304 near the reducing diameter ring 302 is provided with a reducing diameter ring 305. The reducing diameter ring 305 can be pressed against the side wall of the reducing diameter ring 302 due to the rotation of the locking ring 304, so that the clamping block is pressed against the side wall of the telescopic rod 202.

[0042] The locking ring 304 engages with the telescopic tube 201 via a second thread. When the locking ring 304 is rotated, the reducing ring 305 at one end gradually presses against the side wall of the reducing ring 302, forcing the clamping block to contract towards the center. This threaded drive combined with reducing compression mechanism can precisely control the clamping force, avoiding excessive clamping that could deform the telescopic rod 202, while also allowing construction personnel to adjust the locking strength according to actual needs.

[0043] The reducing ring 302 is integrally formed with the telescopic pipe 201, and the locking ring 304 is screwed to the outer wall. The overall structure is axially arranged and does not occupy additional radial space, making it suitable for space-constrained scenarios and avoiding interference with construction equipment.

[0044] Of course, in addition to the aforementioned structure, the diameter reduction component 303 can also be clamped by a hoop, a strip, or other clamping block. However, the aforementioned structure is more conducive to adjusting the locking force, and it is also easier to disassemble and reuse.

[0045] Furthermore, the inner hole of the reducing ring 305 is a variable diameter hole, so that the inner wall of the reducing ring 305 matches the outer wall of the variable diameter ring 302, and the inner wall of the reducing ring 305 abuts against the outer wall of the variable diameter ring 302. When the locking ring 304 rotates, the reducing ring 305 can apply pressure evenly along the inclined surface of the variable diameter ring 302, ensuring that the four clamping blocks retract synchronously, avoiding eccentricity of the telescopic rod 202 or damage to the clamping blocks due to uneven force, and further improving the reliability of the locking mechanism 3.

[0046] The fitting design of the variable diameter hole and the variable diameter ring 302 can efficiently convert the rotational force of the locking ring 304 into the contraction force of the clamping block, reduce energy loss, reduce frictional loss between components, and extend the service life of the locking mechanism 3.

[0047] like Figure 3As shown, a clamping rubber layer 206 is provided on the inner wall of the clamping block, and the clamping rubber layer 206 abuts against the side wall of the telescopic rod 202. The rubber shock-absorbing layer 106 on the inner wall of the clamping block can provide elastic cushioning when clamping the telescopic rod 202, avoiding scratches or deformation caused by direct contact between metal parts, and absorbing the small displacement of the telescopic rod 202 in the construction vibration environment, preventing the locking mechanism 3 from loosening due to rigid collision. The high coefficient of friction of the rubber layer can enhance the gripping force between the clamping block and the telescopic rod 202, and even when subjected to external impact force, it can effectively prevent the telescopic rod 202 from sliding in the telescopic tube 201, ensuring the dimensional stability of the protective device.

[0048] Meanwhile, a fixing protrusion 207 is provided on the outer wall of the telescopic rod 202. Due to the clamping of the clamping block, the fixing protrusion 207 is embedded in the rubber layer. The fixing protrusion 207 on the outer wall of the telescopic rod 202 is embedded in the rubber layer, forming a mechanical interlocking structure, which further prevents the axial movement of the telescopic rod 202. This is especially suitable for tunnel construction environments that are subject to long-term vibration, and can avoid locking failure caused by the elastic decay of the rubber layer, thereby improving the long-term stability of the device.

[0049] In this embodiment, the outer wall of the locking ring 304 is provided with a plurality of gripping protrusions 306. The gripping protrusions 306 on the outer wall of the locking ring 304 can increase the contact friction between the worker's hand and the locking ring 304, especially when wearing gloves or in a damp tunnel environment, making it easier to apply force to rotate the locking ring 304, reducing the difficulty of operation and improving construction efficiency.

[0050] Finally, rubber damping layers 106 are provided on the sidewalls of the first guard plate 101 and the second guard plate 102, and the rubber damping layers 106 abut against the contact surfaces of the corners to be protected. The rubber damping layers 106 on the sidewalls of the guard plates directly contact the corners of the arch or drainage ditch, absorbing the impact force when the support rods collide, preventing damage to the corners. At the same time, the buffering effect of the rubber layer can reduce construction noise and improve the working environment. The elasticity of the rubber layer can fill the tiny gaps between the guard plates and the corners, preventing debris such as gravel and mortar from entering between the protective device and the corners, avoiding corner wear caused by debris accumulation, and enhancing the adaptability of the device to irregular corners.

[0051] The above are merely preferred embodiments of this application and are 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 corner protection device for inverted arches and U-shaped drainage channels, characterized in that, include: Three protective strips (1), each protective strip (1) includes a first protective plate (101) and a second protective plate (102) connected at one end to each other. The shape of the protective strip (1) follows the shape of the corner to be protected. The first protective plate (101) abuts against one of the contact surfaces forming the corner, and the second protective plate (102) abuts against the other contact surface forming the corner, so that the protective strip (1) covers the corner to be protected. Multiple telescopic mechanisms (2) are connected in two groups between adjacent guard strips (1). Each telescopic mechanism (2) includes a telescopic tube (201) and a telescopic rod (202). In two adjacent guard strips (1), the telescopic tube (201) is located on one of the guard strips (1), and the telescopic rod (202) is located on the other guard strip (1). The telescopic rod (202) is inserted into the telescopic tube (201). Multiple locking mechanisms (3) correspond one-to-one with the telescopic mechanism (2). The locking mechanism (3) is located between the corresponding telescopic rod (202) and the telescopic tube (201). When the locking mechanism (3) is locked, the telescopic rod (202) is fixed relative to the telescopic tube (201).

2. The corner protection device for the inverted arch and U-shaped drainage channel as described in claim 1, characterized in that: The first guard plate (101) is arranged horizontally, and the first guard plate (101) is provided with a mounting block (103). Both ends of the mounting block (103) are provided with insertion holes (104), and the mounting block (103) is provided with a first fixing hole (105). The first fixing hole (105) is arranged perpendicular to the insertion hole (104), and the first fixing hole (105) passes through the insertion hole (104). The top ends of the telescopic tube (201) and the telescopic rod (202) are provided with mounting rods (203). The telescopic rod (202) is provided with a second fixing hole (204) extending radially along the telescopic rod (202). The mounting rod (203) is inserted into the insertion hole (104), and the bolt (205) is screwed into the corresponding second fixing hole (204) and the first fixing hole (105).

3. The corner protection device for inverted arch and U-shaped drain according to claim 1, wherein The locking mechanism (3) includes: A cross groove (301) is formed on the telescopic tube (201). The cross groove (301) extends along the axial direction of the telescopic tube (201) and divides the portion of the telescopic tube (201) near the top end into four clamping blocks. The diameter reduction assembly (303) is clamped to the outer wall of the clamping block, and the clamping block can be clamped to the outer wall of the telescopic rod (202) due to the clamping of the diameter reduction assembly (303).

4. The corner protection device for inverted arch and U-shaped drain according to claim 3, wherein The reduced diameter assembly (303) includes: A variable diameter ring (302) is provided on the side wall near the top of the telescopic tube (201). The diameter of the end of the variable diameter ring (302) away from the top of the telescopic tube (201) is the same as the diameter of the telescopic tube (201), and the diameter of the other end of the variable diameter ring (302) is greater than the diameter of the telescopic tube (201). The first thread is provided on the outer wall of the telescopic tube (201); The locking ring (304) has a second thread on its inner wall that is compatible with the first thread. The locking ring (304) is screwed onto the telescopic tube (201). The end of the locking ring (304) near the variable diameter ring (302) is provided with a reducing ring (305). The reducing ring (305) can abut against the side wall of the variable diameter ring (302) due to the rotation of the locking ring (304), so that the clamping block abuts against the side wall of the telescopic rod (202).

5. The corner protection device for the inverted arch and U-shaped drainage channel as described in claim 4, characterized in that: The inner hole of the reducing ring (305) includes an equal diameter section and a variable diameter section connected to each other. The hole wall of the variable diameter section is adapted to the outer wall of the variable diameter ring (302). The inner wall of the reducing ring (305) abuts against the outer wall of the variable diameter ring (302). One end of the equal diameter section of the inner hole of the reducing ring (305) is connected to the locking ring (304).

6. The corner protection device for the inverted arch and U-shaped drainage channel as described in claim 5, characterized in that: The inner wall of the clamping block is provided with a clamping rubber layer (206), which abuts against the side wall of the telescopic rod (202).

7. The corner protection device for the inverted arch and U-shaped drainage channel as described in claim 6, characterized in that: The telescopic rod (202) has a fixed protrusion ring (207) on its outer wall. Due to the clamping of the clamping block, the fixed protrusion ring (207) is embedded in the clamping rubber layer (206).

8. The corner protection device for the inverted arch and U-shaped drainage channel as described in claim 7, characterized in that: The outer wall of the locking ring (304) is provided with a plurality of gripping protrusions (306).

9. The corner protection device for the inverted arch and U-shaped drainage channel as described in claim 8, characterized in that: The first protective plate (101) and the second protective plate (102) are provided with a rubber shock-absorbing layer (106) on their sidewalls, and the rubber shock-absorbing layer (106) abuts against the contact surface of the corner to be protected.

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