Multi-arch tunnel partition wall trolley and its moving guide device

Abstract

The application provides a multi-arch tunnel partition wall trolley and a moving guide device thereof, the moving guide device comprising a connecting sleeve, a screw rod and a universal wheel, the screw rod being horizontally arranged and being in threaded connection with the connecting sleeve; the universal wheel comprising a mounting seat, a rotating seat, a connecting piece and a pulley, the mounting seat being fixedly connected with one end of the screw rod, the rotating seat being rotatably arranged on the mounting seat and being capable of rotating around a horizontal axis; one end of the connecting piece being connected with the rotating seat, an included angle between the connecting piece and the screw rod being obtuse; the pulley being rotatably arranged on the connecting piece through an axle, the pulley being capable of rotating around a central axis of the axle, the central axis of the axle being perpendicular to the horizontal axis. The application can ensure the accuracy of the moving position of the multi-arch tunnel partition wall trolley and prevent the partition wall trolley from deviating left and right during movement and damaging the appearance of the formed partition wall.

Description

Technical Field

[0001] This invention relates to the field of construction technology for arch tunnels, and in particular to a partition wall trolley and its moving guide device for arch tunnels. Background Technology

[0002] A twin-arch tunnel is a type of tunnel suitable for narrow terrain, consisting of two tunnels and a shared central partition wall. It features high space utilization and strong structural integrity. Twin-arch tunnels experience complex stresses, requiring coordination of the surrounding rock pressure on both sides. Construction necessitates sequential excavation and strict control of the central partition wall displacement. During conventional central partition wall construction, lateral deviations during the movement of the central partition wall trolley often affect its final positioning. Furthermore, these deviations can cause the side formwork on the trolley to come into contact with the already formed central partition wall segments, scratching the outer surface of the formed central partition wall and reducing the pass rate of the central partition wall's appearance. Summary of the Invention

[0003] To address the technical problems mentioned in the background section, it is necessary to provide a partition wall trolley for a continuous arch tunnel, which can ensure the accuracy of the trolley's movement position and prevent left-right deviations during the movement of the trolley from damaging the appearance of the formed partition wall.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A partition wall trolley for a multi-arch tunnel includes a main frame and two side templates mounted on the main frame and spaced apart from each other. Each side template has at least one movable guide device at its rear end. The movable guide device includes a connecting sleeve, a screw, and a universal wheel. The connecting sleeve is connected to the rear end of the corresponding side template. The screw is horizontally positioned and threadedly connected to the connecting sleeve. The universal wheel includes a mounting base, a rotating base, a connecting member, and a pulley. The mounting base is fixedly connected to one end of the screw. The rotating base is rotatably mounted on the mounting base and can rotate about a horizontal axis. One end of the connecting member is connected to the rotating base, and the angle between the connecting member and the screw is obtuse. The pulley is rotatably mounted on the connecting member via an axle and can rotate about the central axis of the axle, which is perpendicular to the horizontal axis. The pulleys on the two side templates can respectively contact the opposite sides of the formed partition wall segment.

[0005] Furthermore, the end of the screw furthest from the caster is located outside the connecting sleeve and has an actuation hole. The guide device also includes an actuating member, one end of which is detachably inserted into the actuation hole. By operating the actuating member, the screw can be driven to rotate.

[0006] Furthermore, a base plate is fixed on the outer wall of the connecting sleeve, and the connecting sleeve is connected to the rear end of the corresponding side template through the base plate.

[0007] Furthermore, the connecting sleeve is provided with a threaded hole that passes through both ends of the connecting sleeve; one end of the screw is inserted into the threaded hole and threadedly connected to the threaded hole; the mounting base is located outside one end of the connecting sleeve.

[0008] Furthermore, each of the side templates has a plurality of the aforementioned moving guide devices arranged at vertical intervals at its rear end.

[0009] Furthermore, there are two connecting members, which are spaced apart, and the two opposite ends of the wheel axle are respectively connected to the two connecting members; the pulley is located between the two connecting members.

[0010] Furthermore, the pulley is made of nylon.

[0011] Furthermore, the mounting base has a rotating hole at one end facing away from the connecting sleeve, and one end of the rotating base is rotatably mounted in the rotating hole.

[0012] Furthermore, when the partition wall trolley in the arch tunnel is in a non-moving state, the pulley hangs naturally under its own weight, and the wheel axle is located below the screw and parallel to the moving direction of the partition wall trolley in the arch tunnel; when the partition wall trolley in the arch tunnel is in a moving state, the rotating seat rotates under force, so that the wheel axle is in a vertical state, thereby enabling the pulley to move along the formed partition wall segment.

[0013] The present invention further provides a moving guide device for a partition wall trolley in a multi-arch tunnel, comprising a connecting sleeve, a screw, and a universal wheel. The screw is horizontally arranged and threadedly connected to the connecting sleeve. The universal wheel includes a mounting base, a rotating base, a connecting member, and a pulley. The mounting base is fixedly connected to one end of the screw. The rotating base is rotatably mounted on the mounting base and can rotate about a horizontal axis. One end of the connecting member is connected to the rotating base, and the angle between the connecting member and the screw is an obtuse angle. The pulley is rotatably mounted on the connecting member via an axle and can rotate about the central axis of the axle, which is perpendicular to the horizontal axis.

[0014] By adopting the above technical solution, the present invention has the following beneficial effects: The aforementioned trolley for the central partition wall in the arch tunnel is equipped with moving guide devices at the rear ends of both side formwork sections. The pulleys on these moving guide devices contact the opposite sides of the already formed central partition wall segment in the arch tunnel. During the movement of the trolley, the moving guide devices on the side formwork sections restrict the trolley's lateral movement, ensuring the accuracy of its position and preventing lateral deviations that could scratch the surface of the formed central partition wall. Simultaneously, the rolling contact between the moving guide devices and the formed central partition wall reduces the trolley's movement resistance and prevents scratching.

[0015] The aforementioned trolley for the central partition wall in the arched tunnel uses casters to contact the central partition wall as its guiding device. When the trolley is not moving, the casters naturally hang down. When the trolley moves, the rotating seat rotates under force, making the wheel axle vertical, thus allowing the casters to move along the central partition wall and guiding the trolley. Compared to structures with horizontally arranged connecting parts, the angle between the connecting part of the caster and the screw in this invention is an obtuse angle, allowing the casters to move within a wider range. Therefore, when vibration occurs during the movement of the trolley, it can prevent the casters on both sides of the template from jamming, thus ensuring smooth movement of the trolley.

[0016] The aforementioned trolley for the central partition wall in the arch tunnel can adjust the distance between the pulley and the already formed central partition wall segment by moving the screw of the guide device. When it is necessary to guide and move the trolley for the central partition wall in the arch tunnel, the pulley can be moved closer to the already formed central partition wall segment until it contacts the segment. When the trolley is not moving and the next segment of the central partition wall is being constructed, the pulley can be moved away from the already formed central partition wall segment by rotating the screw to avoid the pulley affecting the extension of the side formwork. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the partition wall trolley in a multi-arch tunnel according to a preferred embodiment of the present invention.

[0018] Figure 2 This is a top view of the side formwork, partition wall, and moving guide device of the central partition wall trolley in the arch tunnel according to a preferred embodiment of the present invention.

[0019] Figure 3 for Figure 1 The diagram shows the structure of the moving guide device in the partition wall trolley of the arch tunnel.

[0020] Figure 4 for Figure 3A perspective view of the structure after removing the lever mechanism.

[0021] Figure 5 for Figure 3 The diagram shows a top view of the movable guide device after the screw has been removed.

[0022] Explanation of main component symbols 100. Partition wall trolley in a continuous arch tunnel; 10. Main frame; 30. Side formwork; 50. Moving guide device; 51. Connecting sleeve; 511. Threaded hole; 53. Screw; 531. Actuating hole; 55. Caster wheel; 551. Mounting base; 5511. Rotating hole; 552. Rotating seat; 553. Connecting piece; 554. Pulley; 5541. Sleeve hole; 556. Horizontal axis; 557. Axle; 56. Base plate; 57. Actuating piece; 200. Partition wall segment already constructed; 300. Partition wall segment to be constructed. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] It should be noted that when a component is described as "fixed to" another component, it can be directly on the other component or may have a component in between. When a component is considered "connected to" another component, it can be directly connected to the other component or may have a component in between. When a component is considered "set on" another component, it can be directly set on the other component or may have a component in between. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0026] Please also see Figure 1 and Figure 2A preferred embodiment of the present invention provides a partition wall trolley 100 in a continuous arch tunnel, comprising a main frame 10 and two side templates 30 mounted on the main frame 10 and arranged at intervals from each other. Each side template 30 is provided with at least one moving guide device 50 at its rear end.

[0027] The structure of the main frame 10 and the side formwork 30 is existing technology. It is understood that the partition wall trolley 100 in the arch tunnel may also include other structures, such as a hydraulic system and screw mechanism (not shown) for driving the extension and retraction of the side formwork 30, and a servo motor traveling mechanism (not shown) installed at the bottom of the trolley for driving the movement of the partition wall trolley 100 in the arch tunnel, etc. For the sake of brevity, they will not be described in detail here.

[0028] The movable guide device 50 is used to guide the movement of the partition wall trolley 100 in the arch tunnel, preventing the partition wall trolley 100 from deviating laterally in the arch tunnel during its movement. In this embodiment, several movable guide devices 50 are provided at vertical intervals at the rear end of each side template 30. Please refer to [further details omitted]. Figures 3 to 5 Each movable guide device 50 includes a connecting sleeve 51, a screw 53, and a caster wheel 55. The connecting sleeve 51 is connected to the rear end of the corresponding side template 30. Please refer to [link / reference]. Figure 2 In this invention, the rear end of the side template 30 is the end face of the side template 30 that is away from the partition wall segment 300 to be constructed. The screw 53 is horizontally set and threadedly connected to the connecting sleeve 51. The universal wheel 55 is installed at one end of the screw 53.

[0029] In this embodiment, a base plate 56 is fixed to the outer wall of the connecting sleeve 51, and the connecting sleeve 51 is connected to the rear end of the corresponding side template 30 through the base plate 56. Specifically, the base plate 56 can be directly welded to the rear end of the corresponding side template 30, or detachably connected to the rear end of the side template 30 by screws or the like. It is understood that in other embodiments, the connecting sleeve 51 can also be directly connected to the rear end of the corresponding side template 30. The connecting sleeve 51 is provided with a threaded hole 511, which passes through the opposite ends of the connecting sleeve 51. The screw 53 passes through the threaded hole 511 and is threadedly connected to the threaded hole 511. The end of the screw 53 away from the universal wheel 55 is located outside the connecting sleeve 51 and is provided with a lever hole 531. The moving guide device 50 also includes a lever 57, one end of which is detachably inserted into the lever hole 531. By operating the lever 57, the screw 53 can be driven to rotate relative to the connecting sleeve 51. In this embodiment, the lever 57 is generally rod-shaped.

[0030] The caster wheel 55 includes a mounting base 551, a swivel base 552, a connector 553, and a pulley 554. The mounting base 551 is fixedly connected to the end of the screw 53 away from the actuation hole 531. The swivel base 552 is rotatably mounted on the mounting base 551 and can rotate about a horizontal axis 556. One end of the connector 553 is connected to the swivel base 552, and the angle between the connector 553 and the screw 53 is an obtuse angle. The pulley 554 is rotatably mounted on the connector 553 via a wheel axle 557 and can rotate about the central axis of the wheel axle 557, which is perpendicular to the horizontal axis 556. The pulleys 554 on the two side templates 30 can contact the opposite sides of the formed partition wall segment 200, respectively.

[0031] In this embodiment, the mounting base 551 is located outside the end of the connecting sleeve 51 away from the actuating hole 531. The outer diameter of the mounting base 551 is larger than the inner diameter of the threaded hole 511. A rotating hole 5511 is provided at the end of the mounting base 551 facing away from the connecting sleeve 51. One end of the rotating seat 552 is rotatably mounted in the rotating hole 5511, thereby achieving a rotatable connection with the mounting base 551. In this embodiment, the rotating seat 552 is coaxially arranged with the connecting sleeve 51 and the screw 53, and the horizontal axis 556 is coaxial with the central axis of the screw 53. In this embodiment, the connecting member 553 is generally rod-shaped, and there are two connecting members 553, which are spaced apart. The opposite ends of the wheel axle 557 are respectively connected to the two connecting members 553, and the pulley 554 is located between the two connecting members 553. In this embodiment, a sleeve hole 5541 is provided in the middle of the pulley 554, and the pulley 554 is rotatably sleeved on the axle through the sleeve hole 5541. The pulley 554 is made of nylon.

[0032] When the partition wall trolley 100 in the arch tunnel is in a stationary state, the pulley 554 hangs naturally under its own weight, and the axle 557 is located below the horizontal axis 556 and is in a horizontal state parallel to the direction of movement of the partition wall trolley. During the concrete pouring of the partition wall, the pulley 554 can be moved away from the already formed partition wall segment 200 by rotating the screw 53 to avoid the pulley 554 affecting the extension of the side formwork 30. After the partition wall under construction is completed and formed, the partition wall trolley 100 needs to be moved to the partition wall segment 300 to be constructed. Before the central partition wall trolley 100 of the arch tunnel moves, the side templates 30 are retracted via a hydraulic system and screw mechanism to avoid interference with the already formed central partition wall segment 200. Then, the screw 53 is rotated, and through the threaded engagement between the screw 53 and the connecting sleeve 51, the screw 53 drives the caster 55 to move closer to the already formed central partition wall segment 200 until the pulleys 554 of the moving guide devices 50 on both side templates 30 abut against the opposite sides of the already formed central partition wall segment 200. In this embodiment, when rotating the screw 53, one end of the lever 57 can be inserted into the lever hole 531. By operating the lever 57, the screw 53 can rotate relative to the connecting sleeve 51, achieving a labor-saving purpose. After the position of the pulley 554 is adjusted, the lever 57 is removed from the lever hole 531. Then, the central partition wall trolley 100 of the arch tunnel can be moved by a servo motor traveling mechanism. When the partition wall trolley 100 in the arch tunnel is in a moving state, the rotating seat 552 rotates under force, causing the axle 557 to be in a vertical state, which in turn allows the pulley 554 to move along the formed partition wall segment 200. After the partition wall trolley 100 in the arch tunnel moves into place, the pulley 554 returns to its natural hanging state under its own weight.

[0033] The aforementioned partition wall trolley 100 in the arch tunnel has movable guide devices 50 installed at the rear ends of its two side templates 30. The pulleys 554 of the movable guide devices 50 on the two side templates 30 are respectively located on opposite sides of the formed partition wall segment 200 of the arch tunnel. During the movement of the partition wall trolley 100, the movable guide devices 50 on the two side templates 30 restrict the lateral movement of the partition wall trolley 100, ensuring the accuracy of its position and preventing lateral deviations that could scratch the appearance of the formed partition wall on the side templates 30. Simultaneously, the movable guide devices 50, through the pulleys 554, roll in contact with the formed partition wall segment 200, reducing the movement resistance of the partition wall trolley 100 and preventing scratches on the formed partition wall segment 200.

[0034] The aforementioned tunnel partition wall trolley 100 uses casters 55 to contact the pre-formed partition wall segment 200. When the trolley is not moving, the pulleys 554 hang naturally. When the trolley moves, the rotating seat 552 rotates under force, causing the axle 557 to be vertical, thus allowing the pulleys 554 to move along the pre-formed partition wall segment 200, thereby guiding the tunnel partition wall trolley 100. Furthermore, compared to the horizontally arranged structure of the connector 553, the angle between the connector 553 and the screw 53 of the universal wheel 55 of the present invention is an obtuse angle, which allows the pulley 554 to move within a larger range. Therefore, when the partition wall trolley 100 in the arch tunnel vibrates during movement, it can avoid the situation where the pulleys 554 on the templates 30 on both sides get stuck, causing the partition wall trolley 100 in the arch tunnel to be unable to move, thus ensuring that the partition wall trolley 100 in the arch tunnel moves smoothly.

[0035] The aforementioned tunnel partition wall trolley 100, via the screw 53 of the movable guide device 50, can control the distance between the pulley 554 and the already formed partition wall segment 200. When it is necessary to guide the tunnel partition wall trolley 100, the screw 53 can be rotated to bring the pulley 554 closer to the already formed partition wall segment 200 until it contacts it. When the tunnel partition wall trolley 100 is not in a moving state and the next partition wall segment is being constructed, the screw 53 can be rotated to move the pulley 554 away from the already formed partition wall segment 200, thus preventing the pulley 554 from affecting the extension of the side formwork 30. Furthermore, since the outer diameter of the mounting base 551 is larger than the inner diameter of the threaded hole 511, the mounting base 551 can abut against the connecting sleeve 51 during the adjustment of the pulley 554 in a direction away from the formed partition wall segment 200, thereby limiting the movement of the pulley 554 in that direction. Simultaneously, since the angle between the connector 553 of the caster 55 and the screw 53 is obtuse, the pulley 554 remains naturally drooping when the tunnel partition wall trolley 100 is not moving. When the position of the pulley 554 is adjusted by rotating the screw 53, the pulley 554 will not rotate with the screw 53, making it easier for workers to determine whether the pulley 554 is in contact with the formed partition wall segment 200, thus preventing the pulley 554 from applying excessive pressure to the formed partition wall segment 200 and causing damage to its appearance.

[0036] The above description is a detailed description of the preferred embodiments of the present invention. However, the embodiments are not intended to limit the scope of the patent application of the present invention. All equivalent changes or modifications made under the technical spirit of the present invention should fall within the patent scope covered by the present invention.

Claims

1. A partition wall trolley for a multi-arch tunnel, comprising a main frame and two side templates mounted on the main frame and spaced apart from each other, characterized in that: Each side template has at least one movable guide device at its rear end. The movable guide device includes a connecting sleeve, a screw, and a caster wheel. The connecting sleeve is connected to the rear end of the corresponding side template. The screw is horizontally positioned and threadedly connected to the connecting sleeve. The caster wheel includes a mounting base, a rotating base, a connecting member, and a pulley. The mounting base is fixedly connected to one end of the screw. The rotating base is rotatably mounted on the mounting base and can rotate about a horizontal axis. One end of the connecting member is connected to the rotating base, and the angle between the connecting member and the screw is obtuse. The pulley is rotatably mounted on the rotating base via a wheel axle. On the connecting member, the pulley can rotate around the central axis of the wheel axle, which is perpendicular to the horizontal axis; the pulleys on the two side templates can respectively contact the opposite sides of the formed partition wall segment; when the partition wall trolley of the arch tunnel is in a non-moving state, the pulley hangs naturally under its own weight, the wheel axle is located below the screw and parallel to the moving direction of the partition wall trolley of the arch tunnel; when the partition wall trolley of the arch tunnel is in a moving state, the rotating seat is rotated by force, so that the wheel axle is in a vertical state, thereby enabling the pulley to move along the formed partition wall segment.

2. The partition wall trolley in a multi-arch tunnel as described in claim 1, characterized in that: The end of the screw furthest from the caster is located outside the connecting sleeve and has an actuation hole. The guide device also includes an actuating member, one end of which is detachably inserted into the actuation hole. By operating the actuating member, the screw can be driven to rotate.

3. The partition wall trolley in a multi-arch tunnel as described in claim 1, characterized in that: A base plate is fixed on the outer wall of the connecting sleeve, and the connecting sleeve is connected to the rear end of the corresponding side template through the base plate.

4. The partition wall trolley in a multi-arch tunnel as described in claim 1, characterized in that: The connecting sleeve has a threaded hole that passes through both ends of the connecting sleeve; one end of the screw is inserted into the threaded hole and threadedly connected to the threaded hole; the mounting base is located outside one end of the connecting sleeve.

5. The partition wall trolley in a multi-arch tunnel as described in claim 1, characterized in that: Each of the side templates is provided with a plurality of moving guide devices at vertical intervals at its rear end.

6. The partition wall trolley in a multi-arch tunnel as described in claim 1, characterized in that: The number of the connecting parts is two, and the two connecting parts are spaced apart. The two ends of the wheel axle are respectively connected to the two connecting parts; the pulley is located between the two connecting parts.

7. The partition wall trolley in a multi-arch tunnel as described in claim 1, characterized in that: The pulley is made of nylon.

8. The partition wall trolley in a multi-arch tunnel as described in claim 1, characterized in that: The mounting base has a rotating hole at one end facing away from the connecting sleeve, and one end of the rotating base is rotatably mounted in the rotating hole.

9. A moving guide device applied to a partition wall trolley in a multi-arch tunnel as described in any one of claims 1-8, characterized in that: The device includes a connecting sleeve, a screw, and a universal wheel. The screw is horizontally positioned and threadedly connected to the connecting sleeve. The universal wheel includes a mounting base, a rotating base, a connecting member, and a pulley. The mounting base is fixedly connected to one end of the screw. The rotating base is rotatably mounted on the mounting base and can rotate about a horizontal axis. One end of the connecting member is connected to the rotating base, and the angle between the connecting member and the screw is obtuse. The pulley is rotatably mounted on the connecting member via an axle and can rotate about the central axis of the axle, which is perpendicular to the horizontal axis.

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