Scaffold for tunnel maintenance

Abstract

The utility model provides a scaffold for tunnel maintenance, which comprises a support unit, and the support unit comprises two support frame groups; the first lifting platform is arranged between the two support frame groups; the number of the second lifting tables is two, the two second lifting tables are slidably connected with the two supporting frame sets respectively and fixedly connected with the two supporting frame sets through connecting rods, and a lifting assembly is connected between one supporting frame set and the corresponding second lifting table. The problems that in the prior art, a scaffold is inconvenient to place and low in working efficiency are solved, the scaffold adapts to the shape of a tunnel by arranging the first lifting table and the second lifting table, and workers can operate and maintain the scaffold conveniently. Working efficiency of the scaffold is improved, utilization rate of workers is improved, and labor time of the workers is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel maintenance, in particular to a scaffold for tunnel maintenance. Background Art

[0002] In order to eliminate tunnel diseases and ensure the safety of train operation, workers will carry out maintenance and repair work on the tunnel, that is, tunnel maintenance. Tunnel maintenance often requires the use of scaffolding. Most of the existing scaffolding for bridge and tunnel maintenance does not have the function of height adjustment and has a small scope of application. The scaffolding with height adjustment is mostly adjusted by cylinders, which has low stability and is easy to slip, posing a safety hazard.

[0003] In order to solve the above problems, a Chinese patent (publication number: CN214780596U) discloses an adjustable scaffold for tunnel maintenance, including a base, wherein connecting seats are fixedly arranged at the four corners of the top of the base, an opening is opened at the top of the connecting seat, a rotating shaft is fixedly arranged in the opening, a hydraulic lifting rod is movably arranged on each of the rotating shafts, a fixed rod located in the opening is threadedly connected to the upper part of the rotating shaft, a limiting hole is opened at the bottom end of the hydraulic lifting rod, and connecting blocks are fixedly arranged at the four corners of the bottom end of the table top, a connecting groove is opened at the bottom end of the connecting block, and the top end of the hydraulic lifting rod is embedded in the connecting groove.

[0004] The above-mentioned scaffolding adjusts the height of the table top through a hydraulic rod, but the table top is generally set in a flat surface. However, most tunnel designs are arched. If the scaffolding is large in size and the table top area is large, it is not convenient to place the scaffolding. If the scaffolding is small in size, when placing the scaffolding in the tunnel, the scaffolding needs to be frequently moved for protection at different positions, and the work efficiency is low. Utility Model Content

[0005] In view of the deficiencies existing in the prior art, the utility model provides a scaffold for tunnel maintenance, which solves the problems in the prior art that the scaffold is inconvenient to place and has low working efficiency.

[0006] In order to solve the above problems, the utility model provides the following solutions:

[0007] A scaffold for tunnel maintenance, comprising:

[0008] A support unit, the support unit comprising two support frame groups;

[0009] A first lifting platform, wherein the first lifting platform is arranged between two supporting frame groups;

[0010] The second lifting platform is provided with two second lifting platforms, the two second lifting platforms are respectively connected with the two supporting frame groups in a sliding manner and are fixedly connected through a connecting rod, and a lifting component is connected between one supporting frame group and the corresponding second lifting platform.

[0011] The technical principle of the utility model is:

[0012] The two support frame groups support the first lifting platform and the second lifting platform and are installed in the tunnel.

[0013] The first lifting platform facilitates workers to maintain the higher position of the tunnel, while the second lifting platform is used to maintain the lower position on both sides of the tunnel.

[0014] The two second lifting platforms are raised and lowered together under the drive of the lifting assembly. Specifically, the lifting assembly is used to adjust the height of one of the second lifting platforms, and simultaneously adjusts the height of the other second lifting platform under the drive of the connecting rod.

[0015] By adjusting the height of the second lifting platform, on the one hand, it can accommodate workers of different heights; on the other hand, the second lifting platform has a certain width, and changing the height of the second lifting platform can adjust the distance between the second lifting platform and the inner wall of the tunnel, making it easier for workers to carry out their work.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] 1. By setting up the first lifting platform and the second lifting platform, the scaffolding can adapt to the shape of the tunnel itself, making it easier for workers to operate and maintain.

[0018] 2. No mobile device is required and maintenance can be performed on multiple locations in the tunnel at the same time, which improves the working efficiency of the scaffolding, increases the utilization rate of workers and saves workers' working time. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of an embodiment of the utility model;

[0020] Figure 2 This is a structural schematic diagram of the connection relationship between the two second lifting platforms of the utility model;

[0021] Figure 3 It is a structural schematic diagram of the lifting component of the utility model.

[0022] In the above drawings:

[0023] Support frame assembly 1, first lifting platform 2, second lifting platform 3, base 4, support rod 5, screw rod 6, guide rod 7, sliding block 8, motor 9, moving wheel 10, escalator 11, guardrail 12, load-bearing rod 13, moving block 14, vertical rod 15, connecting rod 16. DETAILED DESCRIPTION

[0024] The technical solution of the present utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0025] like Figure 1 As shown, the embodiment of the utility model provides a scaffold for tunnel maintenance, comprising:

[0026] A support unit, the support unit comprising two support frame groups 1;

[0027] A first lifting platform 2, wherein the first lifting platform 2 is arranged between the two support frame groups 1;

[0028] The second lifting platform 3 , wherein two second lifting platforms 3 are provided, and the two second lifting platforms 3 are respectively slidably connected to the two support frame groups 1 and fixedly connected via a connecting rod 16 , wherein a lifting assembly is connected between one support frame group 1 and the corresponding second lifting platform 3 .

[0029] In the prior art, since the tabletop is flat, but most tunnel designs are arched, if the scaffold is large, the tabletop area is large, which makes it inconvenient to place the scaffold. If the scaffold is small, when placing the scaffold in the tunnel, it is necessary to frequently move the scaffold to protect different positions, which is inefficient. The tabletop cannot adapt to the shape of the tunnel, which may cause a series of problems.

[0030] In order to solve the above problem, the present embodiment provides a first lifting platform 2 and two second lifting platforms 3, and the difference in their positions and heights can better adapt to the shape of the tunnel.

[0031] Specifically, the detailed working process of this embodiment is as follows:

[0032] The two support frame groups 1 support the first lifting platform 2 and the second lifting platform 3 and are installed in the tunnel.

[0033] The first lifting platform 2 is connected between the four support rods 5 to ensure the stability of the first lifting platform 2, so that workers can perform maintenance on the higher position of the tunnel. Meanwhile, the second lifting platform 3 is used to perform maintenance on the lower positions on both sides of the tunnel.

[0034] The two second lifting platforms 3 are raised and lowered together under the drive of the lifting assembly. Specifically, the lifting assembly is used to adjust the height of one of the second lifting platforms 3, and the height of the other second lifting platform 3 is adjusted at the same time under the drive of the connecting rod 16.

[0035] By adjusting the height of the second lifting platform 3, on the one hand, it can be adapted to workers of different heights; on the other hand, the second lifting platform 3 has a certain width, and changing the height of the second lifting platform 3 can adjust the distance between the second lifting platform 3 and the inner wall of the tunnel, making it easier for workers to work.

[0036] Furthermore, the bottom of the two bases 4 is provided with moving wheels 10 with a locking function. Since the tunnel has a certain depth, by providing the moving wheels 10, it is convenient to push the entire scaffolding to move and place it in a suitable position for locking. It can be understood that there are many specific implementations of the above-mentioned locking function. The present invention provides the following implementation as a schematic illustration; specifically, a locking plate is installed on the moving wheel 10 so that the moving wheel 10 has a locking function.

[0037] Further, in order to facilitate workers to enter the first lifting platform 2 and the second lifting platform 3, one side of one of the support rods 5 on the two support frame groups 1 is connected with an escalator 11. The provision of the escalator 11 facilitates workers to climb.

[0038] In addition, the first lifting platform 2 and the two second lifting platforms 3 are both provided with guardrails 12. In this embodiment, since workers are required to climb onto the first lifting platform 2 and the two second lifting platforms 3, the first lifting platform 2 and the two second lifting platforms 3 are surrounded by guardrails 12 on three sides, and the remaining side is used for entry.

[0039] Furthermore, the first lifting platform 2 is in a stepped shape and forms layers with decreasing heights from the middle to both sides. The first lifting platform 2 is arranged in a stepped shape to better adapt to the shape of the tunnel so that workers can better carry out maintenance work.

[0040] Since there is no supporting structure on the side of the two second lifting platforms 3 away from the support rod 5, the second lifting platforms 3 may not be able to bear weight safely. Further, a load-bearing rod 13 is provided at the bottom of the two second lifting platforms 3, and a moving block 14 located below the sliding block 8 is threadedly connected to the screw rod 6, and the moving block 14 is slidably sleeved on the guide rod 7, and the moving block 14 is connected to the sliding block 8 through the vertical rod 15 and connected to one end of the load-bearing rod 13.

[0041] like Figure 1 and Figure 3 As shown, the load-bearing rod 13 applies force to the moving block 14, and the moving block 14 bears a certain amount of load on the second lifting platform 3, thereby ensuring the safe support of the second lifting platform 3; on the other hand, the load-bearing rod 13, the vertical rod 15, and the connecting line of the second lifting platform 3 and the sliding block 8 form a triangle to form a stable structure, thereby further increasing the safety of the second lifting platform 3.

[0042] like Figure 2 and Figure 3 As shown, the utility model also proposes another embodiment, the main difference between this embodiment and the above embodiment is that the two support frame groups 1 both include a base 4; two support rods 5 are arranged on the top of the base 4; the lifting assembly includes:

[0043] A screw rod 6, wherein the screw rod 6 is rotatably arranged in one of the support rods 5;

[0044] A guide rod 7, wherein the guide rod 7 is fixedly arranged in another support rod 5;

[0045] The sliding block 8 is slidably arranged between the two support rods 5 , one side of the sliding block 8 is threadedly connected to the screw rod 6 , and the other side is slidably penetrated on the guide rod 7 , and one side of the sliding block 8 is fixedly connected to one of the second lifting platforms 3 .

[0046] like Figure 1 and Figure 2 As shown, the lifting assembly is arranged in the left support frame group 1. In this embodiment, four support rods 5 are arranged to form a support unit, and the two second lifting platforms 3 slide between the corresponding two support rods 5. Specifically, a connecting block is slidably arranged between the two support rods 5 of one of the support frame groups 1, and the connecting block is connected to the connecting rod 16 and one of the second lifting platforms 3 to achieve sliding, which is convenient for the transmission of the subsequent lifting assembly.

[0047] Specifically, the working process of the lifting component is:

[0048] The screw rod 6 rotates in one of the support rods 5 of the left support frame group 1, the sliding block 8 is threadedly connected to the screw rod 6 and under the rotation limit of the guide rod 7, the sliding block 8 slides upward between the two support rods 5, thereby driving the second lifting platform 3 connected thereto to move upward, and driven by the connecting rod 16 and the connecting block, the other second lifting platform 3 moves upward therewith to achieve synchronous ascent.

[0049] On the contrary, the screw rod 6 rotates in the opposite direction, the sliding block 8 is threadedly connected to the screw rod 6 and under the rotation limit of the guide rod 7, the sliding block 8 slides downward between the two support rods 5, thereby driving the second lifting platform 3 connected thereto to move upward, and driven by the connecting rod 16 and the connecting block, the other second lifting platform 3 moves upward therewith to achieve synchronous descent.

[0050] Further, one end of the screw rod 6 is connected to a motor 9 located outside the support frame. The motor 9 provides power for the rotation of the screw rod 6 to ensure the normal operation of the lifting assembly.

[0051] The specific working process of the utility model is:

[0052] The scaffold is moved to a suitable position by the moving wheels 10 and then locked.

[0053] The two support frame groups 1 support the first lifting platform 2 and the second lifting platform 3 and are installed in the tunnel.

[0054] The first lifting platform 2 is connected between the four support rods 5 to ensure the stability of the first lifting platform 2; in addition, the first lifting platform 2 is arranged in a stepped shape to better adapt to the shape of the tunnel.

[0055] The two second lifting platforms 3 are raised and lowered together under the drive of the lifting assembly. Specifically, the motor 9 is started, the screw rod 6 rotates in one of the support rods 5 of the left support frame group 1, the sliding block 8 is threadedly connected to the screw rod 6 and under the rotation limit of the guide rod 7, the sliding block 8 slides upward between the two support rods 5 to drive the second lifting platform 3 connected thereto to move upward, and driven by the connecting rod 16 and the connecting block, the other second lifting platform 3 moves upward together to achieve synchronous rise.

[0056] Start the motor 9 to reverse, the screw rod 6 rotates in the opposite direction, the sliding block 8 is threadedly connected to the screw rod 6 and under the rotation limit of the guide rod 7, the sliding block 8 slides downward between the two support rods 5, thereby driving the second lifting platform 3 connected thereto to move upward, and driven by the connecting rod 16 and the connecting block, the other second lifting platform 3 moves upward therewith to achieve synchronous descent.

[0057] The load-bearing rod 13 is used to support the side of the two second lifting platforms 3 away from the support rod 5; the load-bearing rod 13 applies force to the moving block 14, and the moving block 14 bears a certain amount of weight on the second lifting platforms 3, ensuring the safe support of the second lifting platforms 3.

[0058] After adjusting the heights of the two second lifting platforms 3, workers enter the first lifting platform 2 and the two second lifting platforms 3 through the escalator 11 for maintenance, and the guardrail 12 provides certain protection for the workers.

[0059] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A scaffold for tunnel maintenance, characterized in that: include: A support unit, the support unit comprising two support frame groups (1); A first lifting platform (2), wherein the first lifting platform (2) is arranged between the two support frame groups (1); A second lifting platform (3), wherein two second lifting platforms (3) are provided, and the two second lifting platforms (3) are both located below the first lifting platform (2); the two second lifting platforms (3) are respectively slidably connected to the two support frame groups (1) and are fixedly connected via a connecting rod (16), wherein a lifting component is connected between one of the support frame groups (1) and the corresponding second lifting platform (3).

2. The tunnel maintenance scaffolding according to claim 1, characterized in that: The two support frame groups (1) each comprise a base (4); two support rods (5) are arranged on the top of the base (4); the lifting assembly comprises: A screw rod (6), the screw rod (6) being rotatably arranged in one of the support rods (5); A guide rod (7), wherein the guide rod (7) is fixedly arranged inside another support rod (5); A sliding block (8) is slidably arranged between the two support rods (5), one side of the sliding block (8) is threadedly connected to the screw rod (6), and the other side is slidably penetrated on the guide rod (7), and one side of the sliding block (8) is fixedly connected to one of the second lifting platforms (3).

3. The tunnel maintenance scaffolding according to claim 2, characterized in that: One end of the screw rod (6) is connected to a motor (9) located outside the support frame.

4. The tunnel maintenance scaffolding according to claim 2, characterized in that: The bottoms of the two bases (4) are both provided with moving wheels (10) with a locking function.

5. The tunnel maintenance scaffolding according to claim 2, characterized in that: One side of one of the support rods (5) on the two support frame groups (1) is connected to an escalator (11).

6. The tunnel maintenance scaffolding according to claim 1, characterized in that: The first lifting platform (2) is in a stepped shape and forms levels whose heights decrease successively from the middle to both sides.

7. The tunnel maintenance scaffold according to any one of claims 1 to 3, characterized in that: The first lifting platform (2) and the two second lifting platforms (3) are both provided with protective railings (12).

8. The tunnel maintenance scaffolding according to claim 2, characterized in that: The bottom of the two second lifting platforms (3) are both provided with a load-bearing rod (13); the screw rod (6) is also threadedly connected with a moving block (14) located below the sliding block (8), and the moving block (14) is slidably sleeved on the guide rod (7); the moving block (14) is connected to the sliding block (8) through a vertical rod (15) and is connected to one end of the load-bearing rod (13).

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