A mobile scaffold suitable for high-altitude operation in a tunnel

Abstract

The utility model discloses a mobile scaffold suitable for tunnel high altitude operation, including base, the base lower part is installed with a plurality of track wheels, and high altitude operation part is detachably set up on the base, provides high altitude operation space for construction personnel, and the track grabber is symmetrically set up in the both sides of base and with track wheel one to one, and the track grabber is fixed with the base through detachable structure, is used for clamping track to realize the rigid positioning of scaffold. Through the track grabber, the scaffold is fixed on the track, which can prevent the scaffold from rolling over or slipping, and is beneficial to keeping the scaffold high stability and safety. The parts on the scaffold are mainly fixed through fasteners and bolts, which are simple in structure and can be quickly disassembled and assembled, and can improve the construction efficiency. Moreover, the parts on the scaffold are moderate in weight while meeting their own strength, and when other construction vehicles need to use the track, the scaffold can also be quickly disassembled and moved away from the track, which is convenient for timely avoiding other construction vehicles.

Description

Technical Field

[0001] This utility model relates to the field of tunnel construction equipment, and in particular to a mobile scaffold suitable for high-altitude tunnel operations. Background Technology

[0002] Construction in the tunnel track area has high requirements for construction standards. Due to the long construction mileage in the track area, the material transportation and construction efficiency are low. Conventional high-altitude work platforms are difficult to meet the needs of on-site safe construction. Therefore, the construction party generally uses specially customized high-altitude work scaffolding in the track area for construction in the tunnel to improve construction efficiency.

[0003] To facilitate scaffolding movement, existing high-altitude scaffolding in rail transit areas typically uses a combination of railcar bases and conventional scaffolding. However, these existing scaffoldings are difficult to rigidly position on the rails, and due to their high center of gravity, they often have poor stability and are prone to tipping over or sliding, resulting in low safety. Furthermore, the complex structure of traditional scaffolding requires workers to spend more time assembling and disassembling it, leading to lower construction efficiency. In addition, with frequent overlapping operations in different sections, traditional scaffolding requires even more time to dismantle and move, making it difficult to avoid other construction vehicles in a timely manner. Utility Model Content

[0004] In order to overcome the shortcomings of the above-mentioned background technology, this utility model provides a mobile scaffold suitable for high-altitude tunnel operations. It has high stability, can be rigidly positioned on the track, is not easy to slip or overturn, has a simple structure, can be quickly assembled and disassembled, improves construction efficiency, and can avoid other construction vehicles in time.

[0005] The technical implementation scheme of this utility model is as follows: a mobile scaffold suitable for high-altitude tunnel operations, comprising: Base; Track wheels: Several track wheels are installed on the lower part of the base for driving the base to move along a pre-laid track; Aerial work equipment, which is detachably mounted on the base, provides a space for construction workers to work at height; The rail grippers are symmetrically arranged on both sides of the base and correspond one-to-one with the rail wheels. The rail grippers are fixed to the base through a detachable structure and are used to clamp the rails to achieve rigid positioning of the scaffolding and prevent it from tipping over or slipping.

[0006] More preferably, the rail gripper includes a rail gripper housing with a limiting groove, and the rail gripper housing is provided with a plurality of clamping arms connected to the limiting groove. A bidirectional helical screw is provided in the rail gripper housing and connected to the clamping arms, and a handle is provided at the end of the bidirectional helical screw.

[0007] More preferably, the clamping arm has a notch corresponding to the rail head, and the inside of the notch has anti-slip teeth to enhance the clamping friction.

[0008] More preferably, the detachable structure is a bolt, and the rail gripper is engaged with the mounting hole of the base through a through bolt to form a detachable mechanical fixation.

[0009] More preferably, the high-altitude work component includes a first right-angled ladder plate installed on the base, and a second right-angled ladder plate is provided on the other side of the base. A folding diagonal bar is provided on one side between the first right-angled ladder plate and the second right-angled ladder plate. A fixed crossbar, a fixed diagonal bar, and a folding crossbar are provided sequentially from bottom to top on the other side of the first right-angled ladder plate and the second right-angled ladder plate. A supporting long step is provided at the top of the first right-angled ladder plate and the second right-angled ladder plate.

[0010] More preferably, it also includes a counterweight support pedal, which is detachable and mounted on the aerial work platform.

[0011] More preferably, it also includes a high-altitude operation extension component, which is provided between the first right-angle ladder section and the second right-angle ladder section. The high-altitude operation extension component includes a short truss, which is fixed to the first right-angle ladder section and the second right-angle ladder section by double buckles. A long truss is installed on the upper part of the first right-angle ladder section and the second right-angle ladder section. The first right-angle ladder section and the second right-angle ladder section are both fixed to the long truss by the double buckles. The long truss is fixed to the upper part of the short truss by bolts. The long truss is equipped with protective devices to prevent construction workers from falling from the height of the scaffold. A detachable support short step is placed on the long truss. Support members are installed on the long truss by fasteners.

[0012] More preferably, the protective component includes a long fence, which is bolted to the long truss, and a short fence is bolted to one side of the long truss.

[0013] More preferably, the support member includes a support rod, which is installed on the long truss by fasteners, and the lower part of the support rod is threadedly connected to a threaded rod adjustment rod that can be rotated and adjusted in position.

[0014] More preferably, it also includes a folding handle, which is mounted on the base.

[0015] Compared with the prior art, the present invention has the following advantages: By securing the scaffolding to the rails using rail grabbers, it is possible to prevent the scaffolding from tipping over or slipping, thus ensuring its high stability and safety. The components of the scaffolding are mainly fixed together with fasteners and bolts, which is simple in structure and allows for quick assembly and disassembly, improving construction efficiency. Furthermore, each component of the scaffolding is of moderate weight while meeting its own strength requirements. When other construction vehicles need to use the rails, the scaffolding can be quickly disassembled and moved off the rails, facilitating timely avoidance of other construction vehicles. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the first three-dimensional structure of this utility model.

[0017] Figure 2 This is a schematic diagram of the second three-dimensional structure of the present invention.

[0018] Figure 3 This is a schematic diagram of the partially exploded three-dimensional structure of this utility model.

[0019] Figure 4 This is a three-dimensional structural diagram of the high-altitude operation component of this utility model.

[0020] Figure 5 This is a three-dimensional structural diagram of the double buckle of this utility model.

[0021] Figure 6 This is a three-dimensional structural diagram of the threaded rod adjusting rod of this utility model.

[0022] Figure 7 This is an enlarged three-dimensional structural diagram of the present invention, A.

[0023] Figure 8 This is a three-dimensional structural diagram of the rail grabber of this utility model.

[0024] The meanings of the reference numerals in the diagram are as follows: 1. Track; 2. Base; 21. Folding push handle; 221. Rail grabber housing; 222. Limiting groove; 223. Bidirectional spiral screw; 224. Clamping arm; 225. Turning handle; 31. First right-angled ladder piece; 310. Crawling part; 32. Second right-angled ladder piece; 33. Folding diagonal bar; 34. Fixed crossbar; 35. Fixed diagonal bar; 36. Folding crossbar; 37. Supporting long pedal; 4. Counterweight supporting pedal; 5. Guardrail; 61. Short truss; 611. Double buckle; 62. Long truss; 63. Long fence; 64. Short fence; 65. Supporting short pedal; 71. Support rod; 72. Threaded rod adjusting rod. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example

[0026] A mobile scaffold suitable for high-altitude operations in tunnels, such as Figure 1-8 As shown, it includes a base 2, with four track wheels installed on the lower part of the base 2. The track wheels are used to drive the base 2 to move on the track 1. The track gauge of the track 1 is 1435mm and the track height is 176mm. The dimensions of the base 2 are 1533mm wide and 2370mm long. The base 2 is equipped with high-altitude operation components. The base 2 is also equipped with four rail grippers by bolts. The rail grippers are used to fix the scaffolding on the track 1, prevent the scaffolding from tipping over, and have anti-slip braking function.

[0027] The rail grabber includes a rail grabber housing 221 with a limiting groove 222. The rail grabber housing 221 has two clamping arms 224 that are slidably connected to the limiting groove 222. The limiting groove 222 is used to limit the clamping arms 224. The clamping arms 224 have notches corresponding to the rail head. The inner side of the notches is provided with anti-slip teeth to enhance the clamping friction. A bidirectional spiral screw 223 is rotatably connected to the rail grabber housing 221. The bidirectional spiral screw 223 is threadedly connected to the clamping arms 224. A handle 225 is provided on one side of the bidirectional spiral screw 223.

[0028] The high-altitude work equipment includes a first right-angle ladder 31, which is mounted on a base 2. A second right-angle ladder 32 is also provided on the other side of the base 2. Two folding diagonal bars 33 are provided on one side between the first and second right-angle ladder 31 and the second right-angle ladder 32. From bottom to top, a fixed horizontal bar 34, a fixed diagonal bar 35, and a folding horizontal bar 36 are provided on the other side of the first and second right-angle ladder 31 and the second right-angle ladder 32. A supporting long step 37 is provided at the top of the first and second right-angle ladder 31 and the second right-angle ladder 32. The first right-angle ladder 31 is provided with a climbing part 310. The folding diagonal bars 33, the fixed horizontal bars 34, the fixed diagonal bars 35, and the folding horizontal bars 36 are used to reinforce the frame, prevent lateral tilting or deformation, and facilitate quick assembly by workers. The horizontal bar is 1594mm long and the diagonal bar is 1855mm long.

[0029] It also includes counterweight support pedals 4. Two detachable counterweight support pedals 4 are installed at the bottom of the first right-angled ladder 31 and the second right-angled ladder 32. The counterweight support pedals 4 are 500mm wide and 2000mm long. The counterweight support pedals 4 are made of aluminum alloy frame. The two counterweight support pedals 4 can withstand a load of 4000N.

[0030] It also includes a guardrail 5, the height of which is ≥1 meter. The guardrail 5 is installed on the top of the first right-angle ladder 31 and the second right-angle ladder 32. The guardrail 5 is used to prevent construction workers from falling from the height of the scaffold and to ensure work safety.

[0031] It also includes a high-altitude work extension component. A high-altitude work extension component is provided between the first right-angle ladder section 31 and the second right-angle ladder section 32. The high-altitude work extension component includes a short truss 61, which is fixed to the first right-angle ladder section 31 and the second right-angle ladder section 32 by two pairs of double buckles 611. A long truss 62 is installed on the upper part of both the first and second right-angle ladder sections 31 and 32, and is fixed to each of the long trusses 62 by a pair of double buckles 611. The double buckles 611 are made of aluminum alloy. Both long trusses 62 are fixed to the ladder section by bolts. On the upper part of the short truss 61, each long truss 62 is bolted with a long railing 63. The two long trusses 62 are bolted together on one side with a short railing 64. Five detachable support short steps 65 are placed on the two long trusses 62. The long trusses 62 are 3900mm long. The two long trusses 62 with the support short steps 65 form a cantilever platform, extending a 1.6-meter working platform and expanding the construction area. Support members are installed on the long trusses 62 with fasteners. The long railings 63 and short railings 64 are used to prevent personnel from falling from the edge of the cantilever platform. The support members are used to support the middle part of the cantilever platform.

[0032] The support includes a support rod 71, which is installed on the long truss 62 by fasteners. The lower part of the support rod 71 is connected by a threaded rod adjusting rod 72, which can be rotated and adjusted. The position of the threaded rod adjusting rod 72 is adjustable, and the maximum adjustment height of the threaded rod adjusting rod 72 is 30cm. The support rod 71 is 2261mm long.

[0033] It also includes a folding handle 21, which is mounted on the base 2. The folding handle 21 is detachable for easy transportation.

[0034] This scaffolding can move freely on track 1. When the scaffolding is needed, the worker places the base 2 on track 1, and then installs the rail grabber, high-altitude work components, high-altitude work extension components, support components, and folding push handle 21 in sequence. The worker then installs the rail grabber housing 221 into the mounting holes of the base 2 with bolts, forming a detachable mechanical fixation. Next, the worker installs the guardrail 5 on top of the first right-angle ladder 31 and the second right-angle ladder 32, and places two counterweight support steps 4 under the first right-angle ladder 31 and the second right-angle ladder 32. Counterweights are placed on the treadle 4 to increase the stability of the scaffold. Workers place a supporting long tread 37 on top of the first right-angle ladder 31 and the second right-angle ladder 32. Five supporting short treads 65 are placed on the two long trusses 62. Then, workers rotate the threaded rod adjusting rod 72 to move it into contact with the ground. The threaded rod adjusting rod 72 and the supporting rod 71 work together to effectively support the long truss 62. The position of the threaded rod adjusting rod 72 is adjustable, so that the scaffold can adapt to a variety of different tunnel environments.

[0035] When workers need to perform high-altitude operations inside the tunnel, they first push the scaffolding to the designated location using the folding push handle 21. Then, they turn the handle 225 clockwise, which drives the bidirectional spiral screw 223 to rotate clockwise, causing the two clamping arms 224 to move towards the rail head. When the notch of the clamping arm 224 is tightly fitted with the rail head, the worker stops turning the handle 225. The clamping arms 224 are used to clamp the rail 1 to achieve rigid positioning of the scaffolding and prevent it from tipping over or slipping, thereby increasing the stability of the scaffolding and reducing the risk of tipping over. Workers can flexibly adjust the positions of the long truss 62, support rod 71, and threaded rod adjusting rod 72 on both sides of the rail 1 according to the construction location. They can work on both sides of the tunnel by moving the truss, which also ensures the stability of the scaffolding. Workers then climb up the crawling section 310 of the first right-angle ladder 31 to the supporting long step 37. They can then move flexibly on the supporting long step 37 and supporting short step 65 for tasks such as tunnel lighting installation and tunnel wall construction. Guardrails 5, long railings 63, and short railings 64 are used to protect worker safety. When workers need to move to other locations in the tunnel, they climb down the crawling section 310 of the first right-angle ladder 31 to the ground. Then, they turn the handle 225 counterclockwise to separate the clamping arm 224 from the rail head. The workers then use the folding push handle 21 to move the scaffolding to the next work location. By adding the rail 1 car base 2 and the folding push handle 21 to the conventional scaffolding, the scaffolding can move directly on the rail 1, allowing workers to quickly adjust its position, reducing the number of times the scaffolding is disassembled and reassembled, and improving work efficiency. The rail gripper prevents the scaffolding from tipping over or sliding, contributing to its high stability and safety.

[0036] The components on the scaffold are mainly fixed together by fasteners and bolts. The structure is simple and can be quickly assembled and disassembled, which can improve construction efficiency. In addition, each component on the scaffold is of moderate weight while meeting its own strength requirements. When other construction vehicles need to use the track, the scaffold can be quickly disassembled and moved away from the track, which is convenient for timely avoidance of other construction vehicles.

[0037] The scaffold components are made of aluminum alloy. Based on the actual working conditions, a load of 2000N was applied to the cantilevered parts of the scaffold, and a load of 4000N was applied to the counterweight area. The final test results showed that the maximum displacement was 7.246mm and the maximum stress was 87.05MPA, which is less than the yield strength of 6061-T6 aluminum alloy (255MPA). The safety factor is 2.9. 2. The design load at the most unfavorable point of the scaffold is 2000N.

[0038] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A mobile scaffold suitable for high-altitude operations in tunnels, characterized in that, include: Base; Track wheels: Several track wheels are installed on the lower part of the base for driving the base to move along a pre-laid track; Aerial work equipment, which is detachably mounted on the base, provides a space for construction workers to work at height; The rail grippers are symmetrically arranged on both sides of the base and correspond one-to-one with the rail wheels. The rail grippers are fixed to the base through a detachable structure and are used to clamp the rails to achieve rigid positioning of the scaffolding and prevent it from tipping over or slipping.

2. A mobile scaffold suitable for high-altitude tunnel operations as described in claim 1, characterized in that: The rail gripper includes a rail gripper housing with a limiting groove, and a plurality of clamping arms connected to the limiting groove are provided inside the rail gripper housing. A bidirectional spiral screw is provided in the rail gripper housing and connected to the clamping arms, and a handle is provided at the end of the bidirectional spiral screw.

3. A mobile scaffold suitable for high-altitude tunnel operations as described in claim 2, characterized in that: The clamping arm has a notch corresponding to the rail head, and the inside of the notch is provided with anti-slip teeth to enhance the clamping friction.

4. A mobile scaffolding suitable for high-altitude tunnel operations as described in claim 1, characterized in that: The detachable structure is a bolt, and the rail gripper is engaged with the mounting hole of the base through a through bolt to form a detachable mechanical fixation.

5. A mobile scaffold suitable for high-altitude tunnel operations as described in claim 1, characterized in that: The high-altitude work component includes a first right-angled ladder plate installed on the base, and a second right-angled ladder plate is provided on the other side of the base. A folding diagonal bar is provided on one side between the first right-angled ladder plate and the second right-angled ladder plate. A fixed crossbar, a fixed diagonal bar, and a folding crossbar are provided sequentially from bottom to top on the other side of the first right-angled ladder plate and the second right-angled ladder plate. A supporting long step is provided at the top of the first right-angled ladder plate and the second right-angled ladder plate.

6. A mobile scaffold suitable for high-altitude tunnel operations as described in claim 1, characterized in that: It also includes a counterweight support pedal, which is detachable and mounted on the aerial work platform.

7. A mobile scaffolding suitable for high-altitude tunnel operations according to claim 5, characterized in that: It also includes a high-altitude operation extension component. The high-altitude operation extension component is provided between the first right-angle ladder and the second right-angle ladder. The high-altitude operation extension component includes a short truss, which is fixed to the first right-angle ladder and the second right-angle ladder by double buckles. A long truss is installed on the upper part of the first right-angle ladder and the second right-angle ladder. The first right-angle ladder and the second right-angle ladder are both fixed to the long truss by the double buckles. The long truss is fixed to the upper part of the short truss by bolts. The long truss is equipped with protective devices to prevent construction workers from falling from the height of the scaffold. A detachable support short step is placed on the long truss. Support members are installed on the long truss by fasteners.

8. A mobile scaffold suitable for high-altitude tunnel operations as described in claim 7, characterized in that: The protective component includes a long fence, which is bolted to the long truss, and a short fence is bolted to one side of the long truss.

9. A mobile scaffold suitable for high-altitude tunnel operations according to claim 7, characterized in that: The support includes a support rod, which is installed on the long truss by fasteners, and the lower part of the support rod is threadedly connected to a threaded rod adjustment rod that can be rotated and adjusted.

10. A mobile scaffold suitable for high-altitude tunnel operations according to any one of claims 1-9, characterized in that: It also includes a folding handle, which is mounted on the base.

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