A trolley-based arch assist structure

Abstract

The utility model belongs to the trolley technical field especially is a kind of arch frame boost structure based on trolley, including the frame and the steel arch of multi-section splicing, the rear end of frame is fixedly connected with the arch track for sliding support steel arch, arch track is fixedly connected with the electric double slide rail in steel arch rear side by connecting support, electric double slide rail does not shield the lowermost splicing section when steel arch splicing is completed;The slider in electric double slide rail is used to push steel arch along arch track movement, so that steel arch can be installed from one side, installed steel arch slides along arch track, leaves the area of steel arch to be installed, can continue to install new steel arch, steel arch is placed on arch track, then steel arch is pushed, steel arch moves upwards along arch track and leaves space, the space is used to put new steel arch, the steel arch that has been installed is retracted a certain distance, so that two steel archs are butted.

Description

Technical Field

[0001] This utility model belongs to the field of trolley technology, specifically relating to an arch-frame booster structure based on a trolley. Background Technology

[0002] In tunnel excavation, the installation of steel arch frames currently falls into two main categories. One is to assemble them on the ground, then use ropes to pull them vertically before hoisting them onto a frame for installation. However, this method is prone to collisions with the frame during actual construction, leading to deformation and damage to both the frame and the steel arch frame. Furthermore, the assembled steel arch frame is quite heavy, increasing the risk of accidents during hoisting. Therefore, a hydraulic lifting assembly platform was later adopted. This involves installing a structure at the rear of the trolley frame that uses hydraulic rods to move hooks vertically. The process involves first assembling three sections of the steel arch frame, then manually hanging them onto the hooks. Once the hooks move upwards a certain distance, the assembled steel arch frame is complete. Continue installing steel arches at both ends, and then raise the hooks again after installation. This method of installing steel arches in a vertical position avoids the dangers caused by pulling with wire ropes in the past, because hydraulic rods are not as unstable as ropes, which improves safety and avoids damage to the steel arches and the frame. However, this installation method requires simultaneous installation on both sides of the already suspended steel arches. If only one side is installed, it will lead to uneven weight distribution. In addition, the distance between the suspended steel arches and the ground must be precise. If the distance is too high, the steel arches to be installed will need to be manually lifted and connected to it, which is very laborious. If the distance is too low, installation is not possible. Utility Model Content

[0003] To address the problems mentioned in the background section, this utility model provides a trolley-based arch-frame booster structure. This structure requires installation from only one side, reducing manual labor, and is immediately upright after installation, eliminating the need for cumbersome hoisting work and reducing safety hazards.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an arch support structure based on a trolley, including a frame and multiple spliced ​​steel arches. The rear end of the frame is fixedly connected to an arched track for sliding the steel arches. The arched track is fixedly connected to an electric double slide rail located on the rear side of the steel arches through a connecting bracket. The electric double slide rail does not obstruct the lowermost spliced ​​section when the steel arches are spliced.

[0005] The slider in the electric double slide rail is used to push the steel arch frame to move along the arched track.

[0006] As a preferred embodiment of the trolley-based arched booster structure of this utility model, the arched track includes a track frame and several wheels rotatably connected to the track frame. The track frame is suspended and fixed to the rear end of the vehicle frame by a connecting bracket.

[0007] As a preferred embodiment of the trolley-based arch support structure of this utility model, wheel stops for limiting the movement of the steel arch are fixedly connected to both sides of the rotating wheel located in the middle section of the track frame.

[0008] As a preferred embodiment of the trolley-based arch support structure of this utility model, the electric double slide rail includes an outer slide rail frame and two sliders. The connecting end of the slider is fixedly connected to a limit rotating bracket. A push block is rotatably connected to the inner side of the limit rotating bracket. When the slider is used to push the steel arch, the push block rotates to the maximum angle within the limit rotating bracket and can contact the steel arch.

[0009] As a preferred embodiment of the trolley-based arch frame booster structure of this utility model, a torsion spring is fixedly connected to the limiting rotation bracket. The active end of the torsion spring contacts the surface of the push block, and the push block always rotates to the maximum angle under the elastic force of the torsion spring.

[0010] As a preferred embodiment of the trolley-based arch frame booster structure of this utility model, the top of the trolley frame is rotatably connected to a smooth rod via a rotating support frame, and one end of the smooth rod is located on the lower side of the steel arch frame.

[0011] As a preferred embodiment of the trolley-based arch frame booster structure of this utility model, a groove for accommodating the light rod is provided on one side of the track frame.

[0012] As a preferred embodiment of the trolley-based arched booster structure of this utility model, in the initial state, the smooth rod is tilted upward on one side of the front end of the frame.

[0013] As a preferred embodiment of the trolley-based arched booster structure of this utility model, a pad is provided on the front side of the top of the trolley frame.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: The arched track allows the steel reinforcement arch frame to be installed from one side. The installed steel reinforcement arch frame slides along the arched track, leaving an area for installing new steel reinforcement arch frames. The steel reinforcement arch frame is placed on the arched track and then pushed upwards along the track to create space for new steel reinforcement arch frames. The already installed steel reinforcement arch frame is then moved back a certain distance to connect the two sections. After connection, the stability is high, requiring no manual support. The two ends of the steel reinforcement arch frame are manually fixed with bolts. After fixing, the connected steel reinforcement arch frames are pushed further, and so on, until all steel reinforcement arch frames are connected and fixed. Once the steel reinforcement arch frames are connected and fixed, they are very close to the desired installation position, making installation convenient as it only requires installation from one side, reducing manual labor. Furthermore, the installed arch frame is vertical, eliminating the need for cumbersome hoisting work and reducing safety hazards. Attached Figure Description

[0015] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a side view of the overall structure of this utility model;

[0018] Figure 3 This is a schematic diagram showing the installation position of the electric double slide rail in this utility model;

[0019] Figure 4 This is a schematic diagram showing the installation position of the wheel stop in this utility model;

[0020] Figure 5 A schematic diagram showing the installation space for the steel arch frame in this utility model;

[0021] Figure 6 This is a schematic diagram of the overall structure of the electric double slide rail in this utility model;

[0022] Figure 7 This is a schematic diagram showing the installation position of the torsion spring in this utility model;

[0023] In the picture:

[0024] 1. Chassis; 2. Arched track; 3. Electric double slide rail; 4. Steel arch frame; 5. Connecting bracket; 6. Smooth rod; 7. Pad block; 8. Rotating support frame;

[0025] 21. Track frame; 22. Wheel; 23. Wheel stop; 24. Groove;

[0026] 31. Slide rail outer frame; 32. Slider; 33. Limiting rotation bracket; 34. Push block; 35. Torsion spring. Detailed Implementation

[0027] 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.

[0028] like Figures 1-7 As shown:

[0029] A trolley-based arch support structure includes a frame 1 and multiple spliced ​​steel arches 4. The rear end of the frame 1 is fixedly connected to an arched track 2 for sliding the steel arches 4. The arched track 2 is fixedly connected to an electric double slide rail 3 located behind the steel arches 4 via a connecting bracket 5. The electric double slide rail 3 does not obstruct the lowermost spliced ​​section of the steel arches 4 when the splicing is completed.

[0030] The slider 32 in the electric double slide rail 3 is used to push the steel arch frame 4 to move along the arched track 2.

[0031] In this embodiment, the installation of the steel arch 4 in tunnel excavation work is currently mainly divided into two types. One type involves assembling the steel arch 4 on the ground, then pulling it vertically with ropes, and finally hoisting it onto the frame 1 for installation. In actual construction, this method is prone to collisions with the frame 1 during hoisting, causing deformation and damage to both the frame 1 and the steel arch 4. Furthermore, the overall weight of the assembled steel arch 4 is relatively large, making hoisting prone to safety accidents. Therefore, a hydraulic lifting assembly platform was later adopted. This involves installing a structure at the rear end of the trolley frame 1 that uses hydraulic rods to drive the hooks to move vertically. The three sections of the steel arch 4 are first assembled, then manually hung on the hooks. After the hooks move upward a certain distance, the three assembled steel arch 4 sections are then installed on the frame 1. Rebar arches 4 continue to be installed at both ends of the rib arch 4. After installation, the hooks are lifted again. This method of installing the rib arches 4 in a vertical state avoids the danger caused by the previous wire rope pulling. Because the hydraulic rod is not as unstable as the rope, it improves the safety of the rib arches 4 and the frame 1. However, this installation method requires simultaneous installation on both sides of the already suspended rib arches 4. If only one side is installed, it will result in uneven weight distribution. In addition, the distance between the suspended rib arches 4 and the ground needs to be precise. If the distance from the ground is too high, the rib arches 4 to be installed will need to be manually lifted and connected to it, which is very laborious. If the distance from the ground is too low, it cannot be installed.

[0032] This scheme uses an arched track 2 to allow the steel reinforcement arch frame 4 to be installed from one side. The installed steel reinforcement arch frame 4 slides along the arched track 2, leaving an area for installing new steel reinforcement arch frames 4, which can then be installed. Figure 5As shown, the steel arch frame 4 is placed on the arched track 2, and then pushed to move the steel arch frame 4 upward along the arched track 2 to create space for inserting new steel arch frames 4. The installed steel arch frames 4 are then moved back a certain distance to connect the two sections. After the connection is completed, the stability is high and no manual support is required. The two ends of the steel arch frames 4 are fixed manually with bolts. After fixing, the interconnected steel arch frames 4 are pushed again, and so on, until all the steel arch frames 4 are connected and fixed. When the steel arch frames 4 are connected and fixed, they are very close to the installation position, making installation convenient. Installation can be done from one side only, reducing manual input. After installation, the frame is in an upright position, eliminating the cumbersome work of hoisting and reducing safety hazards.

[0033] In an optional embodiment, the arched track 2 includes a track frame 21 and a plurality of wheels 22 rotatably connected to the track frame 21. The track frame 21 is suspended and fixed to the rear end of the frame 1 by a connecting bracket 5.

[0034] In this embodiment, the roller 22 can be made of rubber, which facilitates the rolling of the steel arch 4 and avoids damage to the steel arch 4.

[0035] In an optional embodiment, wheel stops 23 that limit the movement of the steel arch frame 4 are fixedly connected to both sides of the wheel 22 located in the middle section of the track frame 21.

[0036] In this embodiment, since the steel arch frame 4 needs to be lifted a short distance after all the steel arch frame 4 is assembled, wheel stops 23 are fixedly connected to both sides of the rotating wheel 22 located in the middle section of the track frame 21 to limit the movement of the steel arch frame 4. This not only limits the movement of the steel arch frame 4, but also prevents it from colliding with the wheel stops 23 when lifting the steel arch frame 4. Figure 1 As shown, if the steel arch 4 is spliced ​​from the right side, it can be manually guided before the steel arch 4 reaches the wheel stop 23 to prevent it from derailing from the wheel 22.

[0037] In an optional embodiment, the electric double slide rail 3 includes a slide rail frame 31 and two sliders 32. The connecting end of the slider 32 is fixedly connected to a limiting rotation bracket 33. A push block 34 is rotatably connected to the inner side of the limiting rotation bracket 33. When the slider 32 is used to push the steel arch 4, the push block 34 rotates to the maximum angle within the limiting rotation bracket 33 and can contact the steel arch 4.

[0038] The maximum angle described in this embodiment refers to the maximum angle at which the push block 34 is restricted from rotation after it comes into contact with the side of the limiting rotation bracket 33. The longer the electric slide rail is, the higher the cost and the higher the failure rate. In order to solve the problems of cost and failure rate, the traditional electric slide rail is replaced with an electric double slide rail 3. The long-distance movement of the steel arch frame 4 is achieved by the joint action of the two sliders 32 in the electric double slide rail 3. That is, after one slider 32 drives the steel arch frame 4 to the maximum stroke, the other slider 32 returns to the initial position and then pushes the steel arch frame 4 again, thereby achieving the long-distance pushing of the steel arch frame 4.

[0039] like Figure 1 The orientation shown is explained as follows: Since the steel arch frame 4 is an arched structure after installation, before the interconnected steel arch frames 4 reach the midpoint of the arched track 2, the center of the steel arch frame 4 is biased towards the side where the electric double slide rail 3 is installed. Only when the last section of the steel arch frame 4 is installed will the center of gravity of the steel arch frame 4 shift to the other side. When the center of gravity of the interconnected steel arch frames 4 shifts to the other side, the steel arch frame 4 will slide to the left. Wooden blocks can be placed on the ground to the left of the arched track 2 to reduce the impact force of the interconnected steel arch frames 4 directly contacting the ground.

[0040] In an optional embodiment, a torsion spring 35 is fixedly connected to the limiting rotation bracket 33. The active end of the torsion spring 35 contacts the surface of the push block 34, and the push block 34 always rotates to the maximum angle under the elastic force of the torsion spring 35.

[0041] In this embodiment, the torsion spring 35 ensures that the push block 34 rotates to its maximum angle under the elastic force of the torsion spring 35, facilitating contact between the push block 34 and the steel arch 4. This allows the push block 34 to push the steel arch 4 to move. When the slider 32 moves to the initial position, the expansion of the push block 34 and the steel arch 4 causes the push block 34 to rotate, ensuring that the push block 34 is not restricted by the steel arch 4 when the slider 32 moves in the opposite direction.

[0042] In an optional embodiment, the top of the frame 1 is rotatably connected to a light rod 6 via a rotating support frame 8, with one end of the light rod 6 located on the underside of the steel arch frame 4.

[0043] In this embodiment, after the steel arch frame 4 is assembled, one end of the smooth rod 6 near the front of the frame 1 is pressed down, and the steel arch frame 4 is lifted by the smooth rod 6, so that the steel arch frame 4 is separated from the wheel 22 and can pass over the wheel stop 23. Then, the steel arch frame 4 is pulled by a hand chain hoist, so that the steel arch frame 4 slides along the smooth rod 6 to the target position. The fixed end of the hand chain hoist is connected to the frame 1, and the load end of the hand chain hoist is connected to the steel arch frame 4. Similarly, a similar method can be used when pressing down the smooth rod 6. When using this method, a structure that can be stably connected to the hook needs to be fixedly installed at the end of the smooth rod 6.

[0044] In an optional embodiment, a groove 24 for accommodating the light rod 6 is provided on one side of the track frame 21.

[0045] In this embodiment, the groove 24 is used to accommodate one end of the light rod 6, and can also limit one end of the light rod 6.

[0046] In an optional embodiment, in the initial state, the light rod 6 is tilted upward on one side of the front end of the frame 1.

[0047] In this embodiment, when the light rod 6 is initially tilted upward on one side of the front end of the frame 1, the light rod 6 can basically remain horizontal after being pressed down, thus preventing the steel arch frame 4 from sliding to one side due to gravity.

[0048] In an optional embodiment, a pad 7 is provided on the front top side of the frame 1.

[0049] In this embodiment, when the steel arch frame 4 moves onto the smooth rod 6 and passes over the rotating support frame 8, the smooth rod 6 can be kept horizontal by the pad block 7.

[0050] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A trolley-based arch-frame booster structure, comprising a trolley frame (1) and multiple spliced ​​steel arch frames (4), characterized in that: The rear end of the frame (1) is fixedly connected to an arched track (2) for sliding the steel arch frame (4). The arched track (2) is fixedly connected to an electric double slide rail (3) located behind the steel arch frame (4) via a connecting bracket (5). The electric double slide rail (3) does not obstruct the bottom splicing section when the steel arch frame (4) is spliced. The slider (32) in the electric double slide rail (3) is used to push the steel arch frame (4) to move along the arch track (2).

2. The trolley-based arch-frame booster structure according to claim 1, characterized in that: The arched track (2) includes a track frame (21) and several wheels (22) rotatably connected to the track frame (21). The track frame (21) is suspended and fixed to the rear end of the frame (1) by a connecting bracket (5).

3. The trolley-based arch-frame booster structure according to claim 2, characterized in that: Both sides of the wheel (22) located in the middle section of the track frame (21) are fixedly connected with wheel stops (23) that limit the movement of the steel arch frame (4).

4. The trolley-based arch-frame booster structure according to claim 1, characterized in that: The electric double slide rail (3) includes a slide rail frame (31) and two sliders (32). The connecting end of the slider (32) is fixedly connected to a limit rotating bracket (33). The inner side of the limit rotating bracket (33) is rotatably connected to a push block (34). When the slider (32) is used to push the steel arch frame (4), the push block (34) rotates to the maximum angle within the limit rotating bracket (33) and the push block (34) can contact the steel arch frame (4).

5. The trolley-based arch-frame booster structure according to claim 4, characterized in that: A torsion spring (35) is fixedly connected to the limiting rotation bracket (33). The working end of the torsion spring (35) is in contact with the surface of the push block (34). Under the elastic force of the torsion spring (35), the push block (34) always rotates to the maximum angle.

6. The trolley-based arch-frame booster structure according to claim 1, characterized in that: The top of the frame (1) is rotatably connected to a smooth rod (6) via a rotating support frame (8), and one end of the smooth rod (6) is located on the underside of the steel arch frame (4).

7. The trolley-based arch-frame booster structure according to claim 6, characterized in that: A groove (24) for accommodating the light rod (6) is provided on one side of the track frame (21).

8. The trolley-based arch-frame booster structure according to claim 6 or 7, characterized in that: In the initial state, the light rod (6) is tilted upward on one side of the front end of the frame (1).

9. The trolley-based arch-frame booster structure according to claim 6, characterized in that: A pad (7) is provided on the front top of the frame (1).

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