A device for supporting a narrow roadway
By designing an adjustable support device for narrow alleyways, the problem of fixed dimensions in existing devices has been solved, enabling flexible adjustment of height and width, improving construction efficiency and safety, and making it suitable for the support needs of narrow alleyways in rural areas.
Patent Information
- Application Number
- CN202521700550.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-11
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-08-11
AI Technical Summary
The existing support devices for narrow tunnels have fixed dimensions and cannot be adjusted according to the excavation scale on site, resulting in poor support effect, especially in narrow rural tunnels where construction is difficult.
An adjustable support device for narrow tunnels was designed, comprising a height adjustment component and a width adjustment component. Height adjustment is achieved through a lead screw nut and bevel gear transmission, while width adjustment is achieved through air pressure and a sealed piston, ensuring that the device can adapt to different tunnel sizes.
It enables flexible adjustment of the support device to adapt to different tunnel dimensions, improves construction efficiency and safety, and ensures the stability of the buildings on both sides.
Smart Images
Figure CN224678704U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of narrow tunnel support technology, specifically a narrow tunnel support device. Background Technology
[0002] Rural pipeline laying, as a core pillar of rural infrastructure construction, bears the dual mission of ensuring people's livelihood needs and promoting industrial upgrading. This system encompasses diverse pipelines such as water supply, drainage, gas, electricity, and communications, resembling the "lifeblood" of the countryside. It not only directly affects the convenience of villagers' daily water use, energy supply, and information exchange, but is also a key support for rural industrial revitalization and the development of smart agriculture. However, limited by the complex and varied topography of rural areas, the scattered residential patterns, and relatively weak construction conditions, pipeline laying projects must be tailored to local conditions, deeply integrated with the actual situation of rural areas, and strictly adhere to the three core principles of economy, practicality, and safety to ensure that infrastructure construction not only meets the needs of rural development but also possesses long-term sustainable operation.
[0003] Currently, the renovation of rural pipeline networks involves the laying of multiple pipelines, with a burial depth of 1.5 to 3 meters and an excavation width of 1 to 1.5 meters. Due to the presence of many old houses on both sides of the village with shallow foundations, on-site excavation for pipeline construction is quite difficult. As a result, narrow alleyway support devices have emerged. However, the specifications of these devices are generally fixed and cannot be adjusted according to the real-time excavation scale. If the size of the support device does not match the size of the excavation pit, the support and fixation effect on the foundations of the houses on both sides of the pit will be limited. Utility Model Content
[0004] To address the above shortcomings, this utility model patent provides a support device for narrow alleyways. It mainly solves the problem of the difficulty in excavating and constructing pipelines on narrow rural alleyways when laying multiple pipelines. Since the width of rural alleyways is generally between one and three meters, and there are many old houses on both sides with shallow foundations, the complex site environment makes pipeline construction very difficult. Therefore, an adjustable reinforcement support device is set up to increase the scope of use of the device and ensure that the houses on both sides will not collapse.
[0005] To achieve the above objectives, the present invention provides the following technical solution: a narrow alleyway support device, comprising: a support plate one, wherein a support plate two is provided on the left side of the support plate one; A height adjustment assembly includes a base plate and an adjustment part. The base plate is disposed at the bottom of support plate one and support plate two. An inner plate is fixedly installed on the top of the base plate, and a lead screw nut is fixedly installed on the top of the inner plate. A through groove is formed in the middle of the inner plate, and the inner plate is movably installed inside support plate one and support plate two. The adjustment part includes a top block, which is rotatably installed on the top of support plate one and support plate two. A lead screw is fixedly installed at the bottom of the top block, and the lead screw and lead screw nut are compatible. A width adjustment component, comprising a movable part and a supporting part, wherein the movable part and the supporting part are both disposed between support plate one and support plate two.
[0006] Preferably, a bevel gear one is fixedly sleeved at the bottom end of the lead screw, a bevel gear two is provided in the through groove, the bevel gear one and the bevel gear two are meshed together, a rotating shaft is fixedly installed on one side of the bevel gear two, and a rocker arm is fixedly installed at one end of the rotating shaft.
[0007] Preferably, the movable part includes a crossbeam, which is fixedly installed in the middle of the left side of the support plate. The top of the crossbeam has positioning holes linearly and equidistantly opened. A magnetic block one is fixedly installed on the top of the crossbeam. A magnetic block two is attracted to the top of the magnetic block one. A top cover is provided on the top of the crossbeam. The magnetic block two is fixedly installed at the bottom of the top cover. A locking post is fixedly installed at the bottom of the top cover. A support post is movably installed inside the crossbeam. The support post is fixedly installed in the middle of the right side of the support plate. The crossbeam and the support post are fixedly installed together by the locking post.
[0008] Preferably, the supporting part includes a fixing plate, which is fixedly installed on the right side of the second support plate. An inner column is fixedly installed on the right side of the fixing plate. The inner column has a through hole along its length. A vent hole is provided on one side of the through hole to communicate with the outside. A blocking block is movably installed inside the inner column. The blocking block is located at the left end of the through hole and the top of the vent hole. A connecting rod is fixedly installed on the top of the blocking block. The top end of the connecting rod passes through the inner column and extends to the outside of the inner column. The two connecting rods are connected by a bent rod. A spring is fixedly connected to the top of the blocking block. The spring is fixedly connected to the inner wall of the inner column. A sealing piston is fixedly connected to one end of the inner column. Support columns are fixedly installed at both ends of the left side of the first support plate. One end of the inner column passes through the support column and extends into the interior of the support column. The sealing piston is movably installed inside the support column.
[0009] Preferably, a fixing rod is fixedly connected between the support column and the first support plate, and a fixing rod is fixedly connected between the crossbeam and the first support plate.
[0010] Compared with the prior art, this utility model provides a drainage device for road and bridge engineering, which has the following beneficial effects: (1) By setting a width adjustment component, the block blocks the left end of the through hole and the top of the vent hole, and a sealing piston is set inside the support column, so that the inside of the support column is in a sealed state. Due to the air pressure, the support column and the inner column are in a fixed state, and the two ends of the support plate one and the support plate two are fixedly supported. The top cover is taken out upward, the clamping column is moved out of the positioning hole, and the bending rod is lifted upward at the same time. The spring contracts, the block no longer blocks the through hole and the vent hole, and the inside of the support column is no longer in a sealed state. At this time, the distance between the support plate one and the support plate two can be adjusted, so that the device can be adjusted in real time according to the actual width of the roadway.
[0011] (2) This utility model sets up a height adjustment component. When the rocker arm is turned, the shaft and bevel gear 2 rotate, which drives bevel gear 1 to rotate. The screw rod rotates accordingly. At the same time, the screw nut set at the top of the screw rod drives the inner plate to descend, and the bottom plate descends accordingly, thus achieving the effect of adjusting the height of the device. A rotatable reinforced concrete pipe hoisting device with simple structure, convenient hoisting, safe and reliable, and high reusability. Attached Figure Description
[0012] Figure 1 This is a perspective view of the present utility model; Figure 2 This is a left view of the internal structure of this utility model; Figure 3 This is a rear view of the internal structure of this utility model; Figure 4 This is a structural view of the base plate portion of this utility model; Figure 5 This utility model Figure 3 A magnified view of part A; Figure 6 This utility model Figure 3 A magnified view of part B; Figure 7 This utility model Figure 3 A magnified view of part of C; Figure 8 This utility model Figure 2 A magnified view of part of D. Detailed Implementation
[0013] 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.
[0014] Example 1 A preferred embodiment of the narrow alleyway support device provided by this utility model is, for example... Figure 1-8 As shown: A support device for narrow alleyways includes: a support plate 1, and a support plate 2 is provided on the left side of the support plate 1; The height adjustment component 3 includes a base plate portion 31 and an adjustment portion 32. The base plate portion 31 includes a base plate 311, which is disposed at the bottom of support plate 1 and support plate 2. An inner plate 312 is fixedly installed on the top of the base plate 311, and a lead screw nut 313 is fixedly installed on the top of the inner plate 312. A through groove 314 is opened in the middle of the inner plate 312, and the inner plate 312 is movably installed inside the support plate 1 and support plate 2. The adjustment portion 32 includes a top block 321, which is rotatably installed on the top of support plate 1 and support plate 2. A lead screw 322 is fixedly installed on the bottom of the top block 321, and the lead screw 322 is adapted to the lead screw nut 313. Support plate 1, support plate 2, and base plate 311 can all be made of high molecular weight polyethylene, which has 4-7 times the wear resistance of steel and flexible buffering characteristics, and can adapt to minor soil deformation. The overall length of support plate 1 and support plate 2 is 4 meters or 6 meters, and the height is about 1.5 meters. The distance between the support plates is between 0.8 and 2.2 meters, which is suitable for use in rural lanes. The height of base plate 311 is greater than 60 centimeters, which facilitates the installation of pipelines. The adjusting part 32 includes a top block 321, which is rotatably mounted on the top of the support plate 1. A lead screw 322 is fixedly mounted on the bottom of the top block 321. A bevel gear 323 is fixedly mounted on the bottom end of the lead screw 322. A bevel gear 324 is provided inside the support plate 1. A rotating shaft 325 is fixedly mounted inside the bevel gear 324. A rocker arm 326 is fixedly mounted on one end of the rotating shaft 325. The lead screw 322 is adapted to the lead screw nut 313. The bottom end of the lead screw 322 passes through the through groove 314 and extends into the inside of the through groove 314. The bevel gear 323 and the bevel gear 324 are meshed together. The other end of the rotating shaft 325 passes through the support plate 1 and the through groove 314 in sequence, and the other end of the rotating shaft 325 extends into the inside of the through groove 314. The rotating shaft 325 is movably mounted with the support plate 1. Rotating the rocker arm 326 causes the shaft 325 and bevel gear 2 324 to rotate, which in turn drives bevel gear 1 323 to rotate. The lead screw 322 rotates accordingly, and at the same time, the lead screw nut 313 at the top of the lead screw 322 drives the inner plate 312 to descend, and the bottom plate 311 descends accordingly.
[0015] Example 2 Based on Embodiment 1, a preferred embodiment of the narrow roadway support device provided by this utility model is, for example... Figure 1-8 As shown: Width adjustment component 4, which is disposed between support plate 1 and support plate 2; The width adjustment component 4 includes a movable part 41 and a supporting part 42, both of which are disposed between support plate 1 and support plate 2.
[0016] The movable part 41 includes a crossbeam 412, which is fixedly installed in the middle of the left side of the support plate 1. The top of the crossbeam 412 has positioning holes 413 linearly and equidistantly opened. A magnetic block 414 is fixedly installed on the top of the crossbeam 412. A magnetic block 415 is attracted to the top of the magnetic block 414. A top cover 416 is provided on the top of the crossbeam 412. The magnetic block 415 is fixedly installed at the bottom of the top cover 416. A locking post 417 is fixedly installed at the bottom of the top cover 416. A support post 418 is movably installed inside the crossbeam 412. The support post 418 is fixedly installed in the middle of the right side of the support plate 2. The crossbeam 412 and the support post 418 are fixedly installed together by the locking post 417.
[0017] The supporting part 42 includes a fixing plate 421, which is fixedly installed on the right side of the support plate 2. An inner column 422 is fixedly installed on the right side of the fixing plate 421. A through hole 423 is opened in the interior of the inner column 422 along its length. A vent hole 424 is provided on one side of the through hole 423 to communicate with the outside. A blocking block 425 is movably installed inside the inner column 422. The blocking block 425 is located at the left end of the through hole 423 and the top of the vent hole 424. A connecting rod 426 is fixedly installed on the top of the blocking block 425. The top of the 26 penetrates the inner column 422 and extends to the outside of the inner column 422. The two connecting rods 426 are connected by a bent rod 428. A spring 427 is fixedly connected to the top of the block 425. The spring 427 is fixedly connected to the inner wall of the inner column 422. A sealing piston 429 is fixedly connected to one end of the inner column 422. Support columns 411 are fixedly installed at both ends of the left side of the support plate 1. One end of the inner column 422 penetrates the support column 411 and extends into the interior of the support column 411. The sealing piston 429 is movably installed inside the support column 411.
[0018] The block 425 blocks the left end of the through hole 423 and the top of the vent hole 424, and the support column 411 is equipped with a sealing piston 429, so that the inside of the support column 411 is sealed. Due to the air pressure, the support column 411 and the inner column 422 are in a fixed state, which provides fixed support for both ends of the support plate 1 and the support plate 2. Remove the top cover 416 upwards, move the locking post 417 out of the positioning hole 413, and simultaneously lift the bent rod 428 upwards. The spring 427 retracts, and the block 425 no longer blocks the through hole 423 and the vent hole 424. The inside of the support post 411 is no longer sealed. At this time, the distance between support plate 1 and support plate 2 can be adjusted. This distance is the width of the tunnel excavation. After the distance is adjusted, reinsert the locking post 417 into the positioning hole 413 to limit and fix the crossbeam 412 and the support post 418.
[0019] A fixing rod 419 is fixedly connected between the support column 411 and the support plate 1, and a fixing rod 419 is fixedly connected between the crossbeam 412 and the support plate 1.
[0020] Working principle: In use, a mini excavator is used to dig a pit in a rural alley. After digging to a depth of 1.5 meters, the support device is placed in the pit. The device is generally set in sections of four or six meters. Support plates 1 and 2 are brought into contact with the soil on both sides. The top cover 416 is lifted upwards, and the locking post 417 is moved out of the positioning hole 413. At the same time, the bent rod 428 is lifted upwards, the spring 427 retracts, and the block 425 no longer blocks the through hole 423 and the vent hole 424. The inside of the support post 411 is no longer sealed. At this time, the distance between support plates 1 and 2 can be adjusted. This distance is the width of the pit dug in the alley. After the distance is adjusted, the locking post 417 is reinserted into the positioning hole 41. 3. Inside, the crossbeam 412 and the support column 418 are fixed and limited. The distance between support plate 1 and support plate 2 is fixed. The soil on both sides is supported and fixed. Then, manual labor and machinery continue to excavate. During the excavation, the rocker arm 326 is turned, the shaft 325 and the bevel gear 2 324 rotate, which drives the bevel gear 1 323 to rotate. The screw 322 rotates accordingly. At the same time, the screw nut 313 at the top of the screw 322 drives the inner plate 312 to descend, and the bottom plate 311 descends accordingly. After excavation to the finished surface, the pipeline is immediately installed. After the pipeline is installed, the protection is removed and backfilling is carried out. The next section can be constructed. This support device can speed up the construction and ensure the safety of the building structure and construction on both sides.
[0021] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A support device for narrow tunnels, characterized in that, It includes: support plate one (1), and support plate two (2) is provided on the left side of support plate one (1); The height adjustment component (3) includes a base plate (31) and an adjustment part (32). The base plate (31) includes a base plate (311), which is located at the bottom of support plate 1 (1) and support plate 2 (2). An inner plate (312) is fixedly installed on the top of the base plate (311), and a screw nut (313) is fixedly installed on the top of the inner plate (312). A through groove (314) is opened in the middle of the inner plate (312), and the inner plate (312) is movably installed inside support plate 1 (1) and support plate 2 (2). The adjustment part (32) includes a top block (321), which is rotatably installed on the top of support plate 1 (1) and support plate 2 (2). A screw (322) is fixedly installed on the bottom of the top block (321), and the screw (322) is adapted to the screw nut (313). Width adjustment component (4), the width adjustment component (4) includes a movable part (41) and a supporting part (42), the movable part (41) and the supporting part (42) are both arranged between support plate one (1) and support plate two (2).
2. The narrow tunnel support device according to claim 1, characterized in that: The bottom end of the lead screw (322) is fixedly fitted with a bevel gear one (323), and a bevel gear two (324) is provided in the through groove (314). The bevel gear one (323) and the bevel gear two (324) are meshed together. A rotating shaft (325) is fixedly installed on one side of the bevel gear two (324), and a rocker arm (326) is fixedly installed on one end of the rotating shaft (325).
3. The narrow tunnel support device according to claim 1, characterized in that: The movable part (41) includes a crossbeam (412), which is fixedly installed in the middle of the left side of the support plate (1). The top of the crossbeam (412) is provided with positioning holes (413) at equal intervals. A magnetic block (414) is fixedly installed on the top of the crossbeam (412). A magnetic block (415) is attracted to the top of the magnetic block (414). A top cover (416) is provided on the top of the crossbeam (412). The magnetic block (415) is fixedly installed at the bottom of the top cover (416). A locking post (417) is fixedly installed at the bottom of the top cover (416). A support post (418) is movably installed inside the crossbeam (412). The support post (418) is fixedly installed in the middle of the right side of the support plate (2). The crossbeam (412) and the support post (418) are fixedly installed together by the locking post (417).
4. A support device for narrow tunnels according to claim 3, characterized in that: The supporting part (42) includes a fixing plate (421), which is fixedly installed on the right side of the support plate (2). An inner column (422) is fixedly installed on the right side of the fixing plate (421). A through hole (423) is opened in the interior of the inner column (422) along the length direction. A vent hole (424) is provided on one side of the through hole (423) to communicate with the outside. A blocking block (425) is movably installed inside the inner column (422). The blocking block (425) is located at the left end of the through hole (423) and the top of the vent hole (424). A connecting rod (426) is fixedly installed on the top of the blocking block (425). The top of the 26) passes through the inner column (422) and extends to the outside of the inner column (422). The two connecting rods (426) are connected by a bent rod (428). The top of the block (425) is fixedly connected to a spring (427). The spring (427) is fixedly connected to the inner wall of the inner column (422). One end of the inner column (422) is fixedly connected to a sealing piston (429). The two ends of the left side of the support plate (1) are fixedly installed with support columns (411). One end of the inner column (422) passes through the support column (411) and extends to the inside of the support column (411). The sealing piston (429) is movably installed inside the support column (411).
5. A support device for narrow alleyways according to claim 4, characterized in that: A fixing rod (419) is fixedly connected between the support column (411) and the support plate (1), and a fixing rod (419) is fixedly connected between the crossbeam (412) and the support plate (1).