Tunnel reinforcing steel bar conveying trolley
By designing a tunnel steel bar transport trolley with an isosceles triangular frame and adjustable connection structure, the problems of steel bar wear and soil contamination in tunnels were solved, achieving efficient and low-cost steel bar transportation and ensuring project quality.
Patent Information
- Application Number
- CN202520483830.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-19
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2035-03-19
AI Technical Summary
In single-bore, single-track tunnels, directly dragging steel bars with machinery will wear down the surface of the steel bars, and in soil tunnels, they are easily contaminated with mud, affecting the friction between the steel bars and concrete and impacting the quality of the project.
Design a tunnel rebar transport trolley with an isosceles triangular frame supporting the rebar at the base, and anti-detachment guardrails and wheels on both sides. The trolley uses a loader to transport the rebar, avoiding friction with the ground. Adjustable connecting pipes and support structures ensure stability and convenience.
It effectively protects the surface of the steel bars, preventing wear and dirt contamination, ensuring quality, saving machinery and manpower, reducing costs, and utilizing scrap materials, resulting in low cost.
Smart Images
Figure CN223835608U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of steel bar transportation technology in tunnels; specifically, this utility model relates to a tunnel steel bar transportation trolley. Background Technology
[0002] In single-tube, single-track tunnels, due to the limited space inside, the reinforcing steel for the lining must be prefabricated outside the tunnel before being transported to the working face. However, during transportation, directly dragging the steel bars mechanically causes them to rub against the ground, wearing down the ribs on their surface. In earthen tunnels, where the ground is often covered with mud, the steel bars will also become soiled during dragging, further affecting their quality and reducing the friction between the steel bars and the concrete, severely impacting the overall project quality. Therefore, a tool must be used to ensure that the steel bars do not rub against the ground during transportation. Utility Model Content
[0003] In view of this, the present invention provides a tunnel steel bar transport trolley, thereby solving or at least alleviating the above-mentioned problems existing in the prior art.
[0004] To achieve the aforementioned objective, this utility model provides a tunnel rebar transport trolley, including an isosceles triangular frame with its vertex facing down and its base facing up. The base of the frame is used to support the rebar, and anti-detachment guardrails are provided on both sides of the base of the frame to prevent the rebar from detaching. Wheels are provided on both sides of the vertex of the frame.
[0005] In the tunnel steel reinforcement transport trolley described above, optionally, the frame includes two side frames that are spaced apart, the bottom edges of the two side frames are connected by a plurality of upper connecting pipes that are spaced apart, the apexes of the two side frames are connected by a lower connecting pipe, and the wheels are mounted on both ends of the lower connecting pipe.
[0006] In the tunnel steel reinforcement transport trolley as described above, optionally, the upper connecting pipe includes a first pipe body, two second pipe bodies, and multiple third pipe bodies. The two ends of the first pipe body are respectively fixed to one end of the bottom edge of the two side frames. The ends of the two second pipe bodies facing the first pipe body are rotatably connected to the first pipe body. Multiple third pipe bodies are spaced apart along the length direction of the second pipe bodies, and the third pipe bodies connect the two second pipe bodies. The bottom edge of the side frame has a support structure for supporting the second pipe bodies.
[0007] In the tunnel steel reinforcement transport trolley described above, optionally, the support structure includes a support bolt and a support rod, the two ends of the support bolt extending vertically through the bottom edge of the side frame, the width of the support rod being smaller than the width of the bottom edge of the side frame, and the support rod being connected to the bottom end of the support bolt.
[0008] In the tunnel steel reinforcement transport trolley as described above, optionally, a collar is fixedly provided at one end of the second pipe body facing the first pipe body, and the collar is rotatably sleeved at both ends of the first pipe body.
[0009] Optionally, in the tunnel steel reinforcement transport trolley as described above, support wheels are provided at both ends of the first pipe and at both ends of the third pipe that is furthest from the first pipe.
[0010] This utility model of a tunnel rebar transport trolley greatly facilitates the transportation of rebar into tunnels, preventing wear and tear on the lining rebar during transport, ensuring the quality of the tunnel lining rebar, saving on machinery and manpower investment, and reducing costs. Most of the materials used in the tunnel rebar transport trolley are scraps from tunnel construction, requiring only simple assembly and welding, making it easy to manufacture and cost-effective. Attached Figure Description
[0011] The disclosure of this utility model will become more apparent with reference to the accompanying drawings. It should be understood that these drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings:
[0012] Figure 1 This is a schematic diagram of the tunnel steel bar transport trolley according to Embodiment 1 of this utility model;
[0013] Figure 2 This is a schematic diagram of the tunnel steel bar transport trolley according to Embodiment 2 of this utility model;
[0014] Figure 3 This is a diagram showing the state of the tunnel steel bar transport trolley inserted into the bottom of the steel bar in Embodiment 2 of this utility model;
[0015] Figure 4 This is a diagram showing the state of the tunnel steel bar transport trolley after it has been inserted into the bottom of the steel bar and straightened, according to Embodiment 2 of this utility model.
[0016] Reference numerals in the attached diagram: 1-frame; 1-1-side frame; 2-anti-detachment guardrail; 3-wheel; 4-upper connecting pipe; 4-1-first pipe body; 4-2-second pipe body; 4-3-third pipe body; 5-lower connecting pipe; 6-support bolt; 7-support rod; 8-ring; 9-support wheel. Detailed Implementation
[0017] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0018] like Figure 1 As shown, this embodiment provides a tunnel rebar transport trolley, including a frame 1 in the shape of an isosceles triangle. The frame 1 is in a state where the vertex is facing down and the base is facing up. The base of the frame 1 is used to support the rebar. Both sides of the base of the frame 1 are provided with anti-detachment guardrails 2 to prevent the rebar from detaching. Both sides of the vertex of the frame 1 are provided with wheels 3.
[0019] In this embodiment, by placing one end of the steel bar on a trolley and tying the other end to a loader, the steel bar can be transported into the tunnel by the loader slowly pulling it, thus avoiding friction between the steel bar and the ground and ensuring that the steel bar remains intact.
[0020] In practical use:
[0021] ① Place the trolley next to the pre-processed steel bars, use a loader to lift one end of the steel bar, and place the steel bar on the trolley so that the trolley is located one-third of the way down from the end of the loader below the steel bar;
[0022] ②The loader slowly reverses, dragging the steel bars into the tunnel and transporting them to the tunnel working face;
[0023] ③ The loader lifts one end of the rebar, and the construction workers pull the trolley out from under the rebar. Then, wooden planks are placed under both ends of the rebar, and the loader lowers the rebar onto the wooden planks, completing the rebar transportation. Finally, the trolley is placed in the loader's bucket, and as the loader drives out of the tunnel, it can be reused for the next rebar transportation.
[0024] Specifically, the frame 1 includes two spaced-apart side frames 1-1. The base edges of the two side frames 1-1 are connected by multiple spaced-apart upper connecting pipes 4, and the vertices of the two side frames 1-1 are connected by lower connecting pipes 5. The wheels 3 are mounted on both ends of the lower connecting pipes 5. The upper connecting pipes 4 not only form a structure supporting the reinforcing bars but also connect the two side frames 1-1. At the same time, combined with the lower connecting pipes 5, the connection of the two side frames 1-1 forms a stable triangular structure for the entire frame 1, which has strong stability.
[0025] like Figures 2 to 4 As shown, in Embodiment 2, the upper connecting pipe 4 includes a first pipe body 4-1, two second pipe bodies 4-2, and multiple third pipe bodies 4-3. The two ends of the first pipe body 4-1 are respectively fixed to one end of the bottom edge of the two side frames 1-1. The ends of the two second pipe bodies 4-2 facing the first pipe body 4-1 are rotatably connected to the first pipe body 4-1. Multiple third pipe bodies 4-3 are spaced apart along the length direction of the second pipe bodies 4-2, and the third pipe bodies 4-3 connect the two second pipe bodies 4-2. The bottom edge of the side frame 1-1 has a support structure for supporting the second pipe bodies 4-2.
[0026] In this embodiment, two second pipes 4-2 and multiple third pipes 4-3 form a subframe that can swing up and down around the first pipe 4-1 as the axis. During the process of placing the steel bar onto the frame 1, the end of the frame 1 corresponding to the first pipe 4-1 is first laid down on the ground. At this time, the bottom edge of the frame 1 is tilted. Then, the end of the subframe away from the first pipe 4-1 is lowered to the lowest position. At this time, the two second pipes 4-2 are supported on the lower connecting pipe 5, and the tilt angle of the subframe is small, which makes it easier to pull the steel bar onto the frame 1 and can greatly reduce the construction difficulty.
[0027] After the steel bar is placed in the appropriate position on the trolley along its length, straighten the trolley, then pull up the sub-frame to restore it to its initial height, and then use the support structure to fix the sub-frame.
[0028] In a relatively specific embodiment, the support structure includes a support bolt 6 and a support rod 7. The two ends of the support bolt 6 extend vertically through the bottom edge of the side frame 1-1. The width of the support rod 7 is smaller than the width of the bottom edge of the side frame 1-1, and the support rod 7 is connected to the bottom end of the support bolt 6. By rotating the support bolt 6, the support rod 7 is rotated outward to a position where it is disengaged from below the sub-frame, allowing the sub-frame to swing up and down.
[0029] In a relatively specific embodiment, a collar 8 is fixedly provided at the end of the second tube 4-2 facing the first tube 4-1, and the collar 8 is rotatably sleeved on both ends of the first tube 4-1. Support wheels 9 are provided at both ends of the first tube 4-1 and at both ends of the third tube 4-3, which is furthest from the first tube 4-1. By providing support wheels 9, it is easier for the first tube 4-1 to move to a suitable support position for the reinforcing bar at the bottom of the reinforcing bar. At the same time, it also reduces the friction between the end of the subframe away from the first tube 4-1 and the ground during the straightening process of the frame 1.
[0030] The technical scope of this utility model is not limited to the contents of the above description. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this utility model, and all such modifications and variations should fall within the scope of this utility model.
Claims
1. A tunnel steel reinforcement transport trolley, characterized in that, The vehicle includes a frame (1) in the shape of an isosceles triangle, with the apex facing down and the base facing up. The base of the frame (1) is used to support the reinforcing bars. Both sides of the base of the frame (1) are provided with anti-detachment guardrails (2) to prevent the reinforcing bars from detaching. Both sides of the apex of the frame (1) are provided with wheels (3).
2. The tunnel steel reinforcement transport trolley according to claim 1, characterized in that, The frame (1) includes two side frames (1-1) spaced apart. The bottom edges of the two side frames (1-1) are connected by a plurality of upper connecting pipes (4) spaced apart. The apexes of the two side frames (1-1) are connected by a lower connecting pipe (5). The wheel (3) is mounted on both ends of the lower connecting pipe (5).
3. The tunnel steel reinforcement transport trolley according to claim 2, characterized in that, The upper connecting pipe (4) includes a first pipe body (4-1), two second pipe bodies (4-2), and a plurality of third pipe bodies (4-3). The two ends of the first pipe body (4-1) are respectively fixed to one end of the bottom edge of the two side frames (1-1). The ends of the two second pipe bodies (4-2) facing the first pipe body (4-1) are rotatably connected to the first pipe body (4-1). The plurality of third pipe bodies (4-3) are spaced apart along the length direction of the second pipe body (4-2), and the third pipe bodies (4-3) connect the two second pipe bodies (4-2). The bottom edge of the side frame (1-1) has a support structure for supporting the second pipe bodies (4-2).
4. A tunnel steel reinforcement transport trolley according to claim 3, characterized in that, The support structure includes a support bolt (6) and a support rod (7). The two ends of the support bolt (6) extend vertically through the bottom edge of the side frame (1-1). The width of the support rod (7) is smaller than the width of the bottom edge of the side frame (1-1). The support rod (7) is connected to the bottom end of the support bolt (6).
5. A tunnel steel reinforcement transport trolley according to claim 3, characterized in that, The second tube (4-2) is fixedly provided with a collar (8) at one end facing the first tube (4-1), and the collar (8) is rotatably sleeved on both ends of the first tube (4-1).
6. A tunnel steel reinforcement transport trolley according to claim 3, characterized in that, Support wheels (9) are provided at both ends of the first tube (4-1) and at both ends of the third tube (4-3) which is furthest from the first tube (4-1).