Self-propelled tunnel lining trolley
By combining the design of drive wheels, slide rails, jacking mechanism and V-shaped support rods, the problem of stable positioning and movement of the tunnel lining trolley at the pouring position was solved, achieving high-precision locking and self-extrication, thus improving the quality and efficiency of construction.
Patent Information
- Application Number
- CN202522469969.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-21
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-11-21
AI Technical Summary
The existing tunnel lining trolleys are not securely positioned at the pouring site, are prone to misalignment, and are easily slipped or stuck when moving, lacking the ability to extricate themselves, which affects the construction quality and efficiency.
The design employs a combination of drive wheels, slide rails, jacking mechanism, and V-shaped support rods. The opening and closing of the moving seat and support rods are controlled by a motor-driven screw, enabling the trolley to be stably locked and to escape from obstacles on its own. The wear-resistant alloy head cooperates with the positioning groove of the rail to ensure the stable movement of the trolley on the rail.
It achieves high-precision locking of the tunnel lining trolley at the pouring position, avoiding misalignment, and has the ability to extricate itself when encountering movement resistance, ensuring the continuity and safety of construction.
Smart Images
Figure CN224679522U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of tunnel trolley technology, specifically a self-propelled tunnel lining trolley. Background Technology
[0002] Tunnel lining trolleys are key equipment used for concrete lining pouring in tunnel construction. Currently, common lining trolleys typically position themselves at the pouring site by setting wedge blocks or simple braking devices in front of and behind the traveling wheel sets. However, this method has significant drawbacks: First, the wedge blocks are not securely fixed. Under the continuous impact and vibration of concrete pumping, the trolley chassis is prone to slight displacement or "creeping," causing misalignment of the positioned formwork, severely affecting the flatness of the lining surface and construction quality, and potentially even leading to quality and safety accidents. Second, the above-mentioned fixing methods only prevent accidental movement and cannot provide auxiliary power when the trolley needs to be moved.
[0003] In addition, when the trolley moves on the rails inside the tunnel, the traveling wheels often slip or get stuck due to reasons such as cement slurry on the rails, uneven settlement of sleepers, or debris at the bottom of the tunnel. Once such a situation occurs, the traditional trolley itself lacks the ability to get out of trouble, and it is often necessary to call on additional engineering vehicles (such as loaders) to push or pull it. This not only consumes a lot of manpower and time, causing construction to stop and delay the schedule, but also poses safety risks in dispatching large equipment in the narrow tunnel space, and the pushing process may damage the trolley structure.
[0004] Therefore, there is an urgent need in this field for a tunnel lining trolley that can achieve high-precision and high-reliability locking of the pouring position and has the ability to extricate itself when encountering moving resistance, so as to ensure the continuity, quality and efficiency of tunnel lining construction. Summary of the Invention
[0005] (a) Technical problems to be solved This invention provides a self-propelled tunnel lining trolley, which aims to solve the problems mentioned in the background art.
[0006] To achieve the above objectives, this utility model provides the following technical solution: A self-propelled tunnel lining trolley includes a trolley chassis with drive wheels mounted on the bottom of the chassis. The drive wheels roll in contact with steel rails inside the tunnel. The trolley also includes a slide rail, a jacking mechanism, and a V-shaped support member. The slide rail is fixedly installed on the bottom of the trolley chassis, and a movable seat is slidably installed below the slide rail. The jacking mechanism is used to control the movement of the movable seat along the length of the slide rail. One end of the V-shaped support member is movably hinged to the movable seat, and the V-shaped support member disengages from or locks onto the steel rail by the movement of the movable seat.
[0007] As a preferred technical solution of this application, the V-shaped support rod includes two support rods, and slots are provided on both sides of the movable seat. One end of each of the two support rods is movably hinged in the two slots, and a pin passes through the middle of the support rod. The upper end of the pin is fixed to the bottom of the trolley chassis.
[0008] As a preferred technical solution of this application, the jacking mechanism includes a motor and a screw. The motor is fixedly installed at the bottom of the trolley chassis, and the screw is fixedly connected to the output shaft of the motor. The moving seat has a threaded hole in the middle that passes through both ends, and the screw is connected to the threaded hole.
[0009] As a preferred technical solution of this application, the upper outer edge of the rail is provided with an integrally structured retaining rib, and the inner sidewall of the retaining rib is provided with multiple positioning grooves at equal intervals along the length direction.
[0010] As a preferred technical solution of this application, the outer end of the support rod is fixedly provided with a wear-resistant alloy head, and the outer end of the wear-resistant alloy head can be inserted into the positioning groove.
[0011] As a preferred technical solution of this application, a bearing seat is sleeved on the outer end of the screw, and the upper end of the bearing seat is fixedly connected to the bottom of the trolley chassis.
[0012] As a preferred technical solution of this application, a stop block is fixedly installed in the slot. When the wear-resistant alloy head at the outer end of the support rod is inserted into the positioning slot, the other end of the support rod abuts against the corresponding stop block.
[0013] This utility model can stabilize the trolley chassis in a set position. The two support rods are gradually opened into a V shape by the jacking mechanism. The ends of the support rods will contact the corresponding steel rails to stabilize the trolley and prevent the trolley chassis from moving or misaligning. Meanwhile, when the trolley chassis encounters resistance and cannot move normally on the rail, the jacking mechanism continues to move by driving the moving seat. Its driving force will act on the rail, thereby pushing the trolley chassis to move on the rail, thus avoiding the situation where the trolley cannot move and construction is halted. Attached Figure Description
[0014] Figure 1 A schematic diagram of a self-propelled tunnel lining trolley; Figure 2 A schematic diagram of a V-shaped strut structure for a self-propelled tunnel lining trolley; Figure 3 A schematic diagram of the sliding rail structure of a self-propelled tunnel lining trolley; Figure 4 This is a schematic diagram of the rail structure of a self-propelled tunnel lining trolley.
[0015] In the picture: 1. Cart chassis; 2. Rail; 21. Retaining rib; 22. Positioning groove; 3. Slide rail; 4. Motor; 5. Moving seat; 51. Slot; 52. Stop block; 53. T-shaped slider; 54. Bearing seat; 6. V-shaped support rod; 61. Support rod; 62. Pin shaft; 7. Drive wheel. Detailed Implementation
[0016] 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.
[0017] See Figures 1-4 As shown, this utility model provides a self-propelled tunnel lining trolley, including a trolley chassis 1, with drive wheels 7 installed at the bottom of the trolley chassis 1. The drive wheels 7 roll in contact with the steel rails 2 inside the tunnel, and the trolley chassis 1 achieves self-propelled movement on the steel rails 2 through the drive wheels 7. The drive wheels 7 can be AGV drive wheels or other electric or hydraulic wheels in the prior art that can realize the movement of the trolley. It also includes a slide rail 3, a jacking mechanism, and a V-shaped support rod 6. The slide rail 3 is fixedly installed at the bottom of the trolley chassis 1, and a movable seat 5 is slidably installed below the slide rail 3. The movable seat 5 has an integral T-shaped slider 53 on its upper part, and the T-shaped slider 53 is slidably installed in the slide groove of the slide rail 3. The jacking mechanism is used to control the movement of the movable seat 5 in the length direction of the slide rail 3. One end of the V-shaped support rod 6 is movably hinged to the movable seat 5, and the V-shaped support rod 6 is disengaged from or locked to the steel rail 2 by the movement of the movable seat 5.
[0018] In this embodiment, the V-shaped support rod 6 includes two support rods 61. The movable seat 5 has slots 51 on both sides. One end of each of the two support rods 61 is movably hinged in the two slots 51. A pin 62 passes through the middle of the support rod 61. The upper end of the pin 62 is fixed to the bottom of the trolley chassis 1.
[0019] In this embodiment, the pushing mechanism includes a motor 4 and a screw. The motor 4 is a servo motor, which can precisely control the number of rotations. The motor 4 can be controlled remotely. The motor 4 is fixedly installed at the bottom of the trolley chassis 1. The screw is fixedly connected to the output shaft of the motor 4. The moving seat 5 has a threaded hole in the middle that passes through both ends. The screw is connected to the threaded hole.
[0020] In this embodiment, the upper outer edge of the rail 2 is provided with an integrally structured retaining rib 21, and the inner sidewall of the retaining rib 21 is provided with multiple positioning grooves 22 at equal intervals along the length direction.
[0021] In this embodiment, a wear-resistant alloy head is fixedly provided at the outer end of the support rod 61. The outer end of the wear-resistant alloy head can be inserted into the positioning groove 22 to achieve stable positioning of the trolley chassis 1 on the rail 2.
[0022] Furthermore, in this embodiment, a bearing seat 54 is sleeved on the outer end of the screw, and the upper end of the bearing seat 54 is fixedly connected to the bottom of the trolley chassis 1. The bearing seat 54 can effectively ensure the smooth rotation of the screw.
[0023] Furthermore, in order to enable the motor 4 to push the trolley chassis 1 to move on the rail 2 via the V-shaped support rod 6, in this embodiment, a stop block 52 is fixedly installed in the slot 51. When the wear-resistant alloy head of the outer end of the support rod 61 is inserted into the positioning slot 22, the other end of the support rod 61 abuts against the corresponding stop block 52, preventing the two support rods 61 from continuing to increase the opening and closing angle.
[0024] The specific steps are as follows: When the trolley moves to a location where stability is required, the motor 4 is started. The motor 4 drives the moving seat 5 to move via the screw. The moving seat 5 will cause the two support rods 61 to gradually open into a V shape. The wear-resistant alloy heads at the ends of the support rods 61 will be inserted into the positioning groove 22 to stabilize the trolley and prevent the trolley chassis 1 from moving or misaligning. When the trolley chassis 1 encounters resistance and cannot move normally on the rail 2, the motor 4 is started. The motor 4 will continue to drive the moving seat 5 to move through the screw. Since one end of the support rod 61 is restricted by the stop block 52, the two support rods 61 will not be able to increase the opening and closing angle. At this time, the driving force of the motor 4 will act on the rail 2, thereby pushing the trolley chassis 1 to move on the rail 2.
[0025] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A self-propelled tunnel lining trolley, comprising a trolley chassis, drive wheels mounted on the bottom of the trolley chassis, the drive wheels making rolling contact with steel rails inside the tunnel, characterized in that: It also includes a slide rail, a jacking mechanism, and a V-shaped support rod; the slide rail is fixedly installed at the bottom of the trolley chassis, and a movable seat is slidably installed below the slide rail; the jacking mechanism is used to control the movable seat to move in the length direction of the slide rail; one end of the V-shaped support rod is movably hinged to the movable seat, and the V-shaped support rod is disengaged from or locked to the rail by the movement of the movable seat.
2. The self-propelled tunnel lining trolley according to claim 1, characterized in that: The V-shaped support rod includes two support rods. The movable seat has slots on both sides. One end of each of the two support rods is movably hinged in the two slots. A pin passes through the middle of the support rod, and the upper end of the pin is fixed to the bottom of the trolley chassis.
3. The self-propelled tunnel lining trolley according to claim 1, characterized in that: The jacking mechanism includes a motor and a screw. The motor is fixedly installed at the bottom of the trolley chassis, and the screw is fixedly connected to the output shaft of the motor. The moving seat has a threaded hole in the middle that passes through both ends, and the screw is connected to the threaded hole.
4. The self-propelled tunnel lining trolley according to claim 1, characterized in that: The upper outer edge of the rail is provided with an integrally structured retaining rib, and the inner sidewall of the retaining rib is provided with multiple positioning grooves at equal intervals along the length direction.
5. The self-propelled tunnel lining trolley according to claim 4, characterized in that: The outer end of the support rod is fixed with a wear-resistant alloy head, and the outer end of the wear-resistant alloy head can be inserted into the positioning groove.
6. The self-propelled tunnel lining trolley according to claim 3, characterized in that: The outer end of the screw is fitted with a bearing seat, and the upper end of the bearing seat is fixedly connected to the bottom of the trolley chassis.
7. A self-propelled tunnel lining trolley according to claim 2, characterized in that: A stop block is fixedly installed in the slot. When the wear-resistant alloy head at the outer end of the support rod is inserted into the positioning slot, the other end of the support rod abuts against the corresponding stop block.