Fence structure of tunnel trestle

Abstract

The utility model discloses a fence structure of a tunnel trestle, which belongs to the technical field of trestles, and comprises a guardrail frame and a plurality of vertical rods, the upper parts of the plurality of vertical rods are hinged with the guardrail frame through hinges, the axes of the hinges are horizontally arranged and are parallel to the length direction of the guardrail frame, and bolt locks are arranged between the guardrail frame and the vertical rods; the bottoms of the vertical rods are detachably connected with a steel panel of the trestle through fixing pieces. The problem that an existing tunnel trestle fence is not easy to disassemble and assemble due to the fact that the existing tunnel trestle fence is fixedly connected with the trestle is solved, and the problems that an existing tunnel trestle is complex in structure and high in cost due to the fact that the height of the fence is adjusted through a hydraulic system so that vehicles can pass through are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of trestles, in particular to an enclosure structure of a tunnel trestle. Background Art

[0002] A tunnel trestle is a temporary bridge structure that provides support and protection for tunnel construction. It is usually used to cross trenches, rivers or other obstacles inside the tunnel during tunnel construction so that construction personnel, equipment and materials can pass smoothly. A common tunnel trestle includes two steel panels arranged at intervals, and enclosures are set at the edge positions of the two steel panels away from each other on one side to prevent construction personnel or objects from falling from the trestle. In the prior art, the conventional installation method of the enclosure is to fix it on the trestle. When the trestle moves and the face blasting construction is carried out, the enclosure is easily damaged. In addition, when a vehicle passes through the trestle, if the load size is too large, the enclosure may hinder the passage of the items on the vehicle due to the non-adjustable height. If the vehicle forcibly crosses the bridge, it will cause damage to the enclosure and the items carried. In the above-mentioned cases, the enclosure can be removed to avoid damage to the enclosure, and then the enclosure can be installed back on the trestle. However, since the enclosure is fixedly connected to the trestle, there is a defect of inconvenient disassembly and assembly.

[0003] Prior art CN 206971080 U proposes a guardrail for a tunnel inverted arch trestle, which is provided with a guardrail and a hydraulic system. The guardrail is driven by the hydraulic system and the hydraulic cylinder to perform a lifting operation, and the height of the guardrail is adjusted. When the guardrail is raised, it can play a role in preventing falling, and when the guardrail is lowered, it is convenient for vehicles to pass. However, this structure needs to be equipped with a hydraulic system and multiple hydraulic cylinders, and the structure is complex and the cost is high. In addition, when the trestle is moved, the guardrail needs to be removed, otherwise the guardrail is easily damaged during the movement. After the trestle is reinstalled, the guardrail is reinstalled, but because the guardrail is fixedly connected to the trestle through the hydraulic cylinder, the disassembly and assembly operation is relatively difficult. Utility Model Content

[0004] The utility model proposes an enclosure structure for a tunnel trestle to solve the problem that the existing tunnel trestle enclosure is difficult to disassemble and assemble due to being fixedly connected to the trestle, and also solves the problem that the existing tunnel trestle uses a hydraulic system to adjust the enclosure height for vehicle passage, but has a complex structure and high cost.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is:

[0006] A tunnel trestle enclosure structure comprises a guardrail frame and a plurality of vertical bars, wherein the upper parts of the plurality of vertical bars are hinged to the guardrail frame via hinges, the axes of the hinges are arranged horizontally and are parallel to the length direction of the guardrail frame, and latch locks are arranged between the guardrail frame and the vertical bars; and the bottoms of the vertical bars are detachably connected to the steel panels of the trestle via fixings.

[0007] Furthermore, the guardrail frame includes a square frame and a plurality of reinforcing rods arranged in the square frame, and the square frame is connected to a plurality of vertical rods.

[0008] Furthermore, the reinforcing rod includes a plurality of longitudinal rods and / or a plurality of transverse rods.

[0009] Furthermore, the hinge is a limit hinge, and its opening and closing angle is 90°-180°.

[0010] Furthermore, the number of the latch locks is at least two.

[0011] Furthermore, the height of the vertical rod is 20-60 cm.

[0012] Furthermore, the fixing part includes a base and a threaded cap, the base is fixedly connected to the steel panel and has a groove on the top; the vertical rod is a round rod, the bottom of which is inserted into the groove, the threaded cap is movably sleeved on the lower part of the vertical rod and is threadedly connected to the base, and a limiting protrusion is provided on the outer peripheral surface of the vertical rod, and the limiting protrusion is located between the threaded cap and the base.

[0013] As an optional method, the fixing member includes a fixed seat and a rotating seat; the fixed seat is fixedly connected to the steel panel of the pier, and the rotating seat is rotatably installed on the top surface of the fixed seat. A slot is provided on the top surface of the rotating seat. The vertical rod is a round rod, and its lower part is inserted into the slot. A card block is provided at the lower part of the vertical rod. The rotating seat is provided with a vertical slide groove in the slot for the card block to be vertically inserted, and also with a horizontal slide groove for the card block to rotate horizontally, and the vertical slide groove intersects with the horizontal slide groove.

[0014] Furthermore, the fixing part also includes a locking assembly for locking the rotating seat; the locking assembly includes a card column, a guide rail, a connecting rod, a ramp block, a spring and a push rod, all of which are arranged in the side wall of the rotating seat, the card column, the guide rail, the connecting rod and the spring are all arranged vertically, the card column is slidably connected to the guide rail, and the guide rail is fixedly connected to the rotating seat; the lower end of the connecting rod is connected to the card column, and the upper end is connected to the ramp block, the lower end of the spring is connected to the ramp block, and the upper end is connected to the rotating seat; the bottom surface of the rotating seat is provided with a through hole for the card column to pass through, and the fixed seat is provided with two slots for the card column to pass through at intervals, and when the slot is opposite to the through hole, the card column is automatically inserted into the slot under the elastic force of the spring; the push rod is arranged horizontally, one end of which is movably connected to the ramp of the ramp block, and the other end is movably penetrated through the side wall of the rotating seat, and when the push rod moves toward the center of the rotating seat, the ramp block is pushed to move upward, and the card column is driven to separate from the slot.

[0015] Furthermore, the two slots of the fixing seat are symmetrically arranged about the axis of the rotating seat.

[0016] Due to the adoption of the above technical solution, the utility model has the following beneficial effects:

[0017] 1. The guardrail frame of the utility model is hinged to the vertical rod through a hinge, so that the guardrail frame has a folding function. When the guardrail frame causes obstacles to passing vehicles, the guardrail frame is turned outward and folded to lower the height of the enclosure to facilitate the passage of vehicles and avoid damage to the enclosure. The cost of this method is much lower than the existing technology of using a hydraulic system to adjust the enclosure lifting and lowering, and it also reduces the difficulty of disassembling and assembling the enclosure.

[0018] 2. The vertical rod of the utility model is detachably connected to the steel panel of the trestle through a fixing piece, which is convenient for disassembly and assembly of the enclosure. The fixing piece can be arranged in the form of a combination of a base and a threaded cap, which is threadedly connected to the base through the threaded cap to lock the vertical rod. It can also be arranged in the form of a combination of a fixed seat and a rotating seat, by rotating the rotating seat to clamp the block on the vertical rod to prevent the vertical rod from moving up and down, and then locking the rotating seat through the locking assembly to prevent the rotating seat from rotating horizontally. The above two methods have the advantages of simple structure, easy operation and low cost.

[0019] 3. Since the enclosure structure of the utility model is detachable and has a folding function, it is convenient to transfer the enclosure during the mobile construction of the trestle, avoiding the problem of the enclosure being inconvenient to move due to its large size after being dismantled. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the installation of the enclosure structure proposed in Example 1 of the utility model;

[0021] Figure 2 yes Figure 1 A partial enlarged view of the middle A;

[0022] Figure 3 yes Figure 1 A partial enlarged view of point B in the middle;

[0023] Figure 4 This is a schematic diagram of the connection between the fixing member and the vertical rod proposed in Example 2 of the utility model;

[0024] Figure 5 yes Figure 4 A partial enlarged view of point C in the middle;

[0025] Among them, the markings in the attached drawings are: 1-guardrail frame, 2-hinge, 3-latch lock, 4-vertical rod, 5-steel panel, 6-fixing part, 7-base, 8-threaded cap, 9-limiting protrusion, 10-fixed seat, 11-rotating seat, 12-block, 13-vertical slide groove, 14-horizontal slide groove, 15-block, 16-guide rail, 17-connecting rod, 18-inclined block, 19-spring, 20-push rod, 21-slot. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] Example 1

[0028] like Figure 1-3 As shown, a tunnel trestle enclosure structure includes a guardrail frame 1 and a plurality of vertical rods 4. The height of the vertical rods 4 is 20-60 cm. The guardrail frame 1 includes a square frame and a plurality of reinforcing rods arranged in the square frame. The square frame is connected to the plurality of vertical rods 4. The reinforcing rods include a plurality of longitudinal rods and / or a plurality of transverse rods. In this embodiment, the number of the vertical rods 4 is four, the reinforcing rods include eight longitudinal rods, and the height of the vertical rods 4 is 40 cm.

[0029] The upper parts of the four vertical rods 4 are hinged to the square frame of the guardrail frame 1 through hinges 2. The axis of the hinge 2 is horizontally arranged and parallel to the length direction of the guardrail frame 1. The hinge 2 is a limit hinge with an opening and closing angle of 90°-180°, preferably 180°, so that the guardrail frame 1 has a folding function.

[0030] A latch lock 3 is also provided between the guardrail frame 1 and the vertical rod 4, and the number of the latch locks 3 is at least two to ensure the stability of the guardrail frame 1 when in use. In this embodiment, two latch locks 3 are provided, which are respectively located at both ends of the bottom of the guardrail frame 1.

[0031] The bottom of the vertical rod 4 is detachably connected to the steel panel 5 of the trestle through the fixing member 6. In this embodiment, the fixing member 6 includes a base 7 and a threaded cap 8, the base 7 is fixedly connected to the steel panel 5, and a groove is provided on the top. The vertical rod 4 is a round rod, the bottom of which is inserted into the groove, the threaded cap 8 is movably sleeved on the lower part of the vertical rod 4, and is threadedly connected to the base 7. The outer peripheral surface of the vertical rod 4 is provided with a limiting protrusion 9, and the limiting protrusion 9 is located between the threaded cap 8 and the base 7. When installing the enclosure, the four vertical rods 4 are respectively inserted into the bases 7 of the four fixing members 6, and then the four threaded caps 8 are respectively rotated to lock the four vertical rods 4. When disassembling the enclosure, the direction operation is performed.

[0032] Example 2

[0033] like Figure 4-5 As shown, the difference between this embodiment and embodiment 1 lies in the specific structure of the fixing member 6. In this embodiment, the fixing member 6 includes a fixing seat 10 and a rotating seat 11. The fixing seat 10 is fixedly connected to the steel panel 5 of the trestle, and the rotating seat 11 is rotatably mounted on the top surface of the fixing seat 10. A slot is provided on the top surface of the rotating seat 11. The vertical rod 4 is a round rod, and its lower part is inserted into the slot. A block 12 is provided at the lower part of the vertical rod 4. The rotating seat 11 is provided with a vertical slide 13 in the slot for the block 12 to be vertically inserted, and a horizontal slide 14 for the block 12 to be horizontally rotated. The vertical slide 13 intersects with the horizontal slide 14.

[0034] The fixing member 6 also includes a locking assembly for locking the rotating seat 11. The locking assembly includes a post 15, a guide rail 16, a connecting rod 17, a ramp block 18, a spring 19 and a push rod 20, all of which are arranged in the side wall of the rotating seat. The post 15, the guide rail 16, the connecting rod 17 and the spring 19 are all arranged vertically, the post 15 is slidably connected to the guide rail 16, and the guide rail 16 is fixedly connected to the rotating seat 11. The lower end of the connecting rod 17 is connected to the post 15, and the upper end is connected to the ramp block 18. The lower end of the spring 19 is connected to the ramp block 18, and the upper end is connected to the rotating seat 11. The bottom surface of the rotating seat 11 is provided with a through hole for the post 15 to pass through, and the fixing seat 10 is provided with two slots 21 for the post 15 to pass through at intervals, and the two slots 21 are symmetrically arranged about the axis of the rotating seat 11. When the slot 21 is opposite to the through hole, the post 15 is automatically inserted into the slot 21 under the elastic force of the spring 19. The push rod 20 is arranged horizontally, one end of which is movably connected to the inclined surface of the inclined surface block 18, and the other end of which is movably arranged through the side wall of the rotating seat 11. When the push rod 20 moves toward the center of the rotating seat 11, it pushes the inclined surface block 18 to move upward and drives the clamping column 15 to separate from the clamping slot 21.

[0035] In this embodiment, in the initial state, the clamping column 15 is located in one of the clamping slots 21 . After the vertical rod 4 is inserted into the rotating seat 11 , the clamping column 15 is rotated 180° to adjust to the other clamping slot 21 .

[0036] When installing the enclosure, first insert the four vertical rods 4 into the rotating seats 11 of the four fixing members 6 respectively, insert the block 12 on the vertical rod 4 through the vertical slide 13, and reach the entrance and exit of the horizontal slide 14, then press the push rod 20 of the fixing member 6 to drive the clamping column 15 to separate from the clamping slot 21, then rotate the rotating seat 11 180 degrees, the block 12 rotates along the horizontal slide 14, and the clamping column 15 automatically falls into another clamping slot 21 under the action of the spring 19 after rotating 180° with the rotating seat, completing the self-locking of the rotating seat 11; finally, complete the locking operation of other fixing members 6 in turn. When disassembling the enclosure, the reverse operation is performed. The utility model rotates the rotating seat 11 to clamp the block 12 on the vertical rod 4 to prevent the vertical rod 4 from moving up and down, and then locks the rotating seat 11 through the locking assembly to prevent the rotating seat 11 from rotating horizontally.

[0037] The guardrail frame 1 of the utility model is hinged to the vertical rod 4 through the hinge 2, so that the guardrail frame 1 has a folding function. When the guardrail frame 1 causes an obstruction to the passing vehicles, the guardrail frame 1 is flipped outward and folded to lower the height of the enclosure to facilitate the passage of vehicles and avoid damage to the enclosure. In this way, the cost is much lower than the existing technology of using a hydraulic system to adjust the enclosure lifting and lowering, and the difficulty of disassembling and assembling the enclosure is also reduced. The vertical rod 4 of the utility model is detachably connected to the steel panel 5 of the trestle through the fixing piece 6, which is convenient for disassembling and assembling the enclosure, and has the advantages of simple structure, easy operation and low cost. Since the enclosure structure of the utility model is detachable and has a folding function, it is convenient to transfer the enclosure during the mobile construction of the trestle, and avoids the problem that the enclosure is inconvenient to move due to its large size after being removed.

[0038] The above description is a detailed description of the preferred feasible embodiment of the utility model, but the embodiment is not used to limit the scope of the patent application of the utility model. All equivalent changes or modified changes completed under the technical spirit suggested by the utility model should fall within the patent scope covered by the utility model.

Claims

1. A tunnel trestle enclosure structure, comprising a guardrail frame and a plurality of vertical rods, characterized in that: The upper parts of several vertical rods are hinged to the guardrail frame through hinges, the axis of the hinge is horizontally arranged and parallel to the length direction of the guardrail frame, and a latch lock is also arranged between the guardrail frame and the vertical rods; the bottom of the vertical rod is detachably connected to the steel panel of the trestle through a fixing piece.

2. The enclosure structure of a tunnel trestle according to claim 1, characterized in that: The guardrail frame comprises a square frame and a plurality of reinforcing rods arranged in the square frame, and the square frame is connected with a plurality of vertical rods.

3. The enclosure structure of a tunnel trestle according to claim 2 is characterized in that: The reinforcing rod includes a plurality of longitudinal rods and / or a plurality of transverse rods.

4. The enclosure structure of a tunnel trestle according to claim 1, characterized in that: The hinge is a limited hinge, and its opening and closing angle is 90°-180°.

5. The enclosure structure of a tunnel trestle according to claim 1, characterized in that: The number of the latch locks is at least two.

6. The enclosure structure of a tunnel trestle according to claim 1, characterized in that: The height of the vertical rod is 20-60cm.

7. The enclosure structure of a tunnel trestle according to claim 1, characterized in that: The fixing part includes a base and a threaded cap. The base is fixedly connected to the steel panel and has a groove on the top. The vertical rod is a round rod, and its bottom is inserted into the groove. The threaded cap is movably sleeved on the lower part of the vertical rod and is threadedly connected to the base. A limiting protrusion is provided on the outer peripheral surface of the vertical rod, and the limiting protrusion is located between the threaded cap and the base.

8. The enclosure structure of a tunnel trestle according to claim 1, characterized in that: The fixing member includes a fixing seat and a rotating seat; the fixing seat is fixedly connected to the steel panel of the pier, and the rotating seat is rotatably installed on the top surface of the fixing seat. A slot is provided on the top surface of the rotating seat. The vertical rod is a round rod, and its lower part is inserted into the slot. A clamping block is provided at the lower part of the vertical rod. The rotating seat is provided with a vertical slide groove in the slot for the vertical insertion of the clamping block, and a horizontal slide groove for the horizontal rotation of the clamping block, and the vertical slide groove intersects with the horizontal slide groove.

9. The enclosure structure of a tunnel trestle according to claim 8, characterized in that: The fixing part also includes a locking assembly for locking the rotating seat; the locking assembly includes a card column, a guide rail, a connecting rod, a ramp block, a spring and a push rod, all of which are arranged in the side wall of the rotating seat, and the card column, guide rail, connecting rod and spring are all arranged vertically, the card column is slidably connected to the guide rail, and the guide rail is fixedly connected to the rotating seat; the lower end of the connecting rod is connected to the card column, and the upper end is connected to the ramp block, the lower end of the spring is connected to the ramp block, and the upper end is connected to the rotating seat; the bottom surface of the rotating seat is provided with a through hole for the card column to pass through, and the fixed seat is provided with two slots for the card column to pass through at intervals, and when the slot is opposite to the through hole, the card column is automatically inserted into the slot under the elastic force of the spring; the push rod is arranged horizontally, one end of which is movably connected to the ramp of the ramp block, and the other end is movably penetrated through the side wall of the rotating seat, and when the push rod moves toward the center of the rotating seat, the ramp block is pushed to move upward, and the card column is driven to separate from the slot.

10. The enclosure structure of a tunnel trestle according to claim 9, characterized in that: The two clamping grooves of the fixing seat are symmetrically arranged about the axis of the rotating seat.

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