Tunnel secondary lining spraying maintenance trolley

Abstract

The utility model belongs to the technical field of tunnel construction equipment, and particularly discloses a tunnel secondary lining spraying maintenance trolley. Comprising a support, a water spraying pipe, nozzles, a driving assembly, a pump machine, a sliding rail, pulleys, a limiting assembly and a sensing device. The water spraying pipe is provided with a plurality of nozzles and communicates with the pump machine, the sliding rail is installed on the top of the tunnel, the support is connected with the pulley and installed on the sliding rail through the pulley, the limiting assembly is used for preventing the support from falling off from the sliding rail and installed on the sliding rail, the sensing device is installed on the support, and the driving assembly is used for driving the support to move on the sliding rail. The driving assembly is installed on the support. In actual application, the support moves on the sliding rail under the action of the driving assembly and the pump machine, spraying maintenance is conducted on the top of the tunnel through the nozzles, spraying maintenance of the whole section of the top of the tunnel can be further completed, and construction efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of tunnel construction equipment and specifically discloses a tunnel secondary lining spraying and maintenance trolley. Background Art

[0002] At present, with the rapid development of urban (regional) railways in my country, the number of mine (mountain) tunnels has gradually increased, and the quality and standardization of projects have been increasingly improved, which has put forward higher requirements for the quality of tunnel secondary lining. As an important link in concrete quality control, concrete curing has become a task that cannot be ignored in process control. At present, the mechanization degree of secondary lining curing equipment is insufficient and the efficiency is low. The existing curing trolleys are large in size, inconvenient for manual operation, and easily affected by cross-operation, which restricts the curing work of secondary lining concrete, resulting in the urgent need to improve the curing technology and equipment of secondary lining concrete.

[0003] The tunnel maintenance equipment with patent application number CN211616039U includes a spray pipe, which is slidably installed on the top of the tunnel through a hanging mechanism and a hoisting mechanism. The water pipe on the inner side of the tunnel is connected to the spray pipe. Since the spray pipe is hung on the top surface of the tunnel, it only occupies a small ground space and does not occupy any ground space at all. It can enter the area below the lining concrete immediately after the lining trolley completes the operation. The above device can only be stopped or restarted by a manual operation device during tunnel spray maintenance, and the operation steps are complicated. Therefore, it is urgent for those skilled in the art to solve the above technical problems. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a tunnel secondary lining spray maintenance trolley in view of the deficiencies of the above-mentioned prior art. The tunnel secondary lining spray maintenance trolley controls the movement of the bracket on the slide rail through a driving motor, supplies water to the nozzle on the bracket through a pump, and sprays and maintains the tunnel top. When the bracket moves to the vicinity of the head and tail ends of the slide rail, the sensing device controls the driving motor to slow down and reverse to realize the reciprocating movement of the bracket on the slide rail.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0006] A tunnel secondary lining spray maintenance trolley comprises a bracket, a water spray pipe, a nozzle, a driving assembly, a pump, a slide rail, a pulley, a limit assembly and a sensing device; a plurality of nozzles are arranged on the water spray pipe, the water spray pipe is connected to the pump, the slide rail is installed on the top of the tunnel, the bracket is connected to the pulley, the bracket is installed on the slide rail through the pulley, the limit assembly is used to prevent the bracket from falling off the slide rail, the limit assembly is installed on the slide rail, the sensing device is installed on the bracket, the driving assembly is used to drive the bracket to move on the slide rail, and the driving assembly is installed on the bracket.

[0007] Furthermore, a connecting piece is also provided on the bracket, and the connecting piece is used to connect the bracket and the pulley; the pulley is connected to the bracket through the connecting piece, and two pulleys are provided in total, and the two pulleys are clamped on the slide rail.

[0008] The bracket is tightly connected to the pulley through the connector to ensure the stability of the entire spray maintenance trolley structure. The configuration of the two pulleys, each of which is clamped on the slide rail, greatly increases the balance and stability of the trolley on the track. Even if the track is slightly uneven or has a slight slope, it can ensure safe driving and prevent overturning. The way of connecting the pulley and the bracket with the connector makes installation and removal easier and faster, which is conducive to rapid assembly and adjustment on site. Once the pulley needs to be repaired or replaced, just loosen the connector to proceed, without large-scale disassembly of the entire system, reducing maintenance costs and time. The design of two pulleys clamped on the slide rail means that the trolley can easily adapt to tracks of different directions, whether it is a straight line or a curve, it can run smoothly. The adjustability of the pulley is achieved through the connector, which can be fine-tuned according to the actual working conditions to ensure the fit with the track, improve adaptability and flexibility, and the two pulleys share the load. Compared with the single pulley design, the pressure on each wheel is halved, reducing the friction and wear between the pulley and the track and extending the service life. At the same time, the uniform load distribution also helps to reduce noise during operation and create a better working environment. The double-wheel layout ensures the precise positioning of the trolley on the track, and can respond quickly even when automatically reversing, improving the continuity and accuracy of the maintenance work. This is crucial for automatic spraying maintenance, ensuring that every inch of concrete can be evenly and fully watered, thereby improving the overall maintenance effect and efficiency.

[0009] Furthermore, the driving assembly includes a driving motor, which is mounted on the connecting member. A hole is opened on the right side of the connecting member. The output gear shaft of the driving motor is connected to the pulley on the right side, and the pulley rotates driven by the output gear shaft.

[0010] The drive motor is directly mounted on the connector and connected to the output gear shaft of the drive motor through the opening on the right side of the connector. This design reduces the intermediate links in the transmission chain, reduces energy loss, and makes power transmission more direct and efficient. At the same time, the compact layout is also conducive to saving space and making the entire trolley structure more streamlined. The direct engagement between the output gear of the drive motor and the pulley ensures the stability and reliability of power transmission. Gear transmission has the characteristics of high efficiency and constant transmission ratio, which means that the rotation speed and torque of the pulley can be accurately controlled, ensuring the smoothness and consistency of the spray maintenance trolley walking on the track, and contributing to the uniformity of the spraying operation. The motor is mounted on the connector and connected to the output gear shaft through the opening. This layout facilitates the installation and removal of the motor. In case the motor needs to be repaired or replaced, it can be done quickly, reducing downtime. At the same time, the meshing condition of the gears can be fine-tuned by adjusting the position of the connecting parts to achieve fine-tuning and optimization of the transmission system. Direct transmission reduces the use of flexible components such as belts and chains, avoids the loss of these easily worn parts, reduces maintenance costs and failure rates, and extends the service life of the entire tooling. The direct drive capability of the motor greatly improves the degree of automation of the trolley, and can accurately control the travel speed, stop and direction of the spray maintenance trolley. Combined with the sensing device, an intelligent automatic reciprocating spray maintenance process is realized, without the need for frequent manual intervention, which improves work efficiency and reduces labor costs.

[0011] Furthermore, the sensing device adopts a proximity sensor, the sensing device is installed on the connecting piece, the sensing device is electrically connected to the driving motor, and the sensing device controls the driving motor to slow down and reverse when it senses that the pulley is close to the limit block.

[0012] The use of proximity sensors enables the trolley to automatically sense its position on the track, especially when it approaches the limit blocks at both ends, automatically triggering the corresponding control logic without manual intervention, thereby improving the automation level of the entire maintenance operation. The sensing device can accurately determine the relative position of the pulley and the limit block, send out signals in time, and control the drive motor to slow down and reverse. This not only avoids damage caused by the trolley hitting the limit block, but also ensures the safety of the equipment. At the same time, the spray maintenance process is more accurately controlled, and water resources will not be wasted or maintenance is not in place due to crossing the boundary. Through automatic sensing and reaction, the delay caused by manual operation is reduced, so that the trolley can quickly adjust its direction and return after traveling to the end, and almost seamlessly carry out the next maintenance trip, greatly improving the continuity and work efficiency of the spray operation. The precise control of the sensor avoids invalid or excessive operation. The drive motor automatically slows down and reverses when approaching the limit, reducing unnecessary energy consumption, helping to save energy and reduce consumption, and conforming to the concept of green construction. Proximity sensors are usually easy to install, have a low failure rate, and are easy to diagnose and replace, with low maintenance costs, which is beneficial to the long-term stable operation of the entire system.

[0013] Furthermore, the limit assembly includes a limit block and a pulley limit portion, the limit block is installed at the head and tail ends of the slide rail, and the limit block is used to prevent the bracket from falling off the slide rail when it moves to the end of the slide rail; the slide rail is made of I-beam, and the pulley limit portion is the lower part of the slide rail, and the pulley limit portion is used to prevent the bracket from falling off the slide rail when it moves.

[0014] The limit blocks are located at the head and tail ends of the slide rail, which effectively limits the travel range of the trolley, avoids exceeding the limit of the slide rail, prevents the trolley from derailing, and ensures the safety of construction personnel and equipment. The pulley limit part is designed at the bottom of the I-beam. The physical contact between the pulley and the I-beam increases the stability of the trolley on the track, and it can maintain a good track even when moving quickly or reversing to prevent displacement or shaking. The limit design avoids excessive movement of the trolley on the track, reduces the wear between the pulley and the track, extends the service life of the track and pulley, and reduces maintenance costs. The automatic operation of the limit device does not require manual monitoring of whether the trolley has reached the end of the track, reduces manual intervention, makes operation easier, and improves work efficiency. I-beams are used as slide rails, and their standardized size and strength are easy to obtain and install, making the trolley design more compatible with the adaptation of different tunnels, reducing customization costs, and improving versatility and construction standardization.

[0015] Furthermore, the water spray pipe is installed on the bracket, and the pump is connected to the nozzle through the water spray pipe.

[0016] The bracket with a through-hole structure reduces the overall weight of the device. The water spray pipe is installed on the bracket. This design makes the components of the spray system more integrated and the layout more compact, which not only saves space, but also helps to improve the stability of the overall structure and facilitates operation in the narrow space of the tunnel. The pump is directly connected to the nozzle through a pipe. This design simplifies the water flow path, reduces resistance and potential leakage points during water transmission, improves water pressure delivery efficiency, and ensures the uniformity and effectiveness of spraying, which is particularly important for concrete maintenance. It reduces complex assembly steps, and operators can complete the setup and adjustment of equipment more quickly, reducing construction preparation time and improving work efficiency. The layout design of the water spray pipe connected to the pump is easy to adjust, and the spraying plan can be flexibly changed according to different tunnel section sizes and maintenance requirements, ensuring a wide coverage of the nozzle spray to meet different maintenance requirements.

[0017] The utility model has the following beneficial effects:

[0018] The bracket is driven by a driving motor to drive the pulley to move on the slide rail, and the pump is connected to the nozzle on the bracket through a pipe, thereby realizing comprehensive and uniform spraying maintenance of the secondary lining concrete. It not only covers a wide range, but also can effectively reduce dust and improve the maintenance effect. By setting an induction switch on the bracket, when the bracket moves to the limit blocks at the head and tail ends of the slide rail, the induction device controls the motor to slow down and reverse to achieve reciprocating movement on the slide rail, thereby improving the overall automation level of the device. Through automatic sensing and response, the delay caused by manual operation is reduced, so that the trolley can quickly adjust the direction and return after moving to the end, and carry out the next maintenance trip almost seamlessly, which greatly improves the continuity and work efficiency of the spraying operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the utility model.

[0020] Figure 2 yes Figure 1 Enlarged schematic diagram of part A in the middle.

[0021] Figure 3 yes Figure 1 Enlarged schematic diagram of part B in the middle.

[0022] Figure 4 It is the front view of the utility model.

[0023] The components include: 1- bracket; 11- water spray pipe; 111- nozzle; 12- connector; 2- driving assembly; 21- driving motor; 3- positioning structure; 31- slide rail; 32- pulley; 4- limiting device; 41- limiting block; 42- pulley limiting part; 5- sensing device; 6- tunnel. DETAILED DESCRIPTION

[0024] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific preferred embodiments.

[0025] In the description of the present invention, it should be understood that the terms "left side", "right side", "upper part", "lower part", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. "First", "second", etc. do not indicate the importance of the components, and therefore cannot be understood as a limitation on the present invention. The specific dimensions used in this embodiment are only for illustrating the technical solution, and do not limit the scope of protection of the present invention.

[0026] Reference Figure 1 and Figure 4It can be seen that a tunnel secondary lining spray maintenance trolley includes a bracket 1 constituting the main body of the device. The bracket 1 is an arched structure as a whole. A water spray pipe 11 is installed at the arched part of the bracket 1. A plurality of nozzles 111 are arranged on the water spray pipe 11. The top of the bracket 1 is a square frame structure. The square frame is provided with a driving assembly 2 and a pulley positioning structure 3. The top of the bracket 1 is connected to a pulley 32 through a connecting member 12. The pulley 32 is clamped on a pulley limiting portion 42 of a slide rail 31. The slide rail 31 is installed on the top of a tunnel 6. A limiting block 41 is installed at the head and tail ends of the slide rail 31. An induction device 5 is also installed on the connecting member 12. A drive motor 21 is installed on the right part of the connecting member 12. The drive motor 21 is connected to the pulley 32 through an output gear shaft.

[0027] In one embodiment, when installing the device, first, install an I-beam slide rail 31 on the top of the tunnel 6 to ensure that it is horizontal and stable, install limit blocks 41 at the head and tail ends of the slide rail 3 to limit the travel stop point of the trolley, and make the arch bracket 1 customized according to the cross-sectional size of the tunnel. It is formed by welding a square tube, and a PE pipe is laid on the square tube as a water spray pipe 11. The water spray pipe 11 is installed with holes at intervals. Nozzles 111 are kept at a certain distance from the top of the tunnel 6 to ensure uniform spraying. The pump is connected to the water spray pipe 11 through a pipeline, and the pump pumps water into the water spray pipe 11. Water is sprayed to the top of the tunnel 6 through the nozzle 111 for maintenance, and the positioning structure 3 is connected to the top of the bracket 1 through a connector 12. The pulley 32 is arranged on the pulley stopper 42 of the slide rail 31 to ensure stability and smooth sliding without leaving the slide rail 31. The pulley 32 is arranged on both sides of the slide rail 31. Because the slide rail 31 is an I-beam structure, the pulley 32 can be clamped on the lower part of the slide rail 31, that is, the pulley stopper 42, to ensure balance.

[0028] Reference Figure 2 It can be seen that the nozzle 111 is arranged on the outside of the water spray pipe 11, and a total of multiple nozzles 111 are arranged on the water spray pipe 11, and the water spray pipe 11 is laid on the outside of the arch structure of the bracket 1.

[0029] In one embodiment, since the water spray pipe 11 is a centrally-through structure, the pump located at the bottom of the tunnel 6 can be connected to the water spray pipe 11 through a pipeline to pump water into the water spray pipe 11. The water flows through the nozzle 111 and can be sprayed with water mist or clustered spray due to the different water outlet holes of the nozzle 111. Similarly, the water spray pipe 11 can also be connected to the water pipes arranged on the tunnel 6 to achieve the purpose of pumping water inside the water spray pipe 11. After spraying, the water can flow naturally along the side wall, thereby playing the role of sprinkling water and maintaining the side wall concrete.

[0030] Reference Figure 3 It can be seen that the right part of the connecting member 12 has a hole, the output gear shaft of the driving motor 21 is connected to the pulley 32 through the connecting member 12, the connecting member 12 is also provided with a sensing device 5, and the front and rear ends of the slide rail 31 are provided with limit blocks 41.

[0031] In one embodiment, the drive motor 21 is installed on the right part of the connecting member 12 and connected to the pulley 32 through the gear shaft. The sensing device 5 is installed on the connecting member 12, and is used to detect when the pulley 32 approaches the limit block 41, triggering the drive motor 21 to decelerate and reverse, and connecting the power supply of the drive motor 21 to ensure that the remote control can remotely control the start and stop of the car;

[0032] Limit blocks 41 are installed at the front and rear ends of the slide rail 31 as the automatic turning point of the device. The arch bracket 1 is customized according to the size of the tunnel. The drive motor 21 is installed on the right part of the connecting piece 12 to ensure that the output shaft is connected to the pulley 32 through the opening of the connecting piece 12. The sensing device 5 is installed on the connecting piece 12 to automatically control the forward and reverse rotation of the motor. The pulley 32 is installed on the pulley limit 42 of the slide rail 31 through the connecting piece 12 to ensure stable sliding. The two sides of the pulley 32 are clamped on the I-beam to ensure that it does not derail. After assembly is completed, check whether all components are firmly installed and the lines are correctly connected. Test the operation of the motor 2 and the remote control to see whether the sensing device 5 responds to normal operation to ensure the automatic walking and spraying functions of the trolley. In the tunnel 6, the trolley is placed in place, and the drive motor 21 is started by the remote control. The trolley automatically walks and sprays along the slide rail 31. When encountering the limit block 41, the sensing device 5 slows down the trolley drive motor 21 and automatically reverses, and the cycle continues to ensure lining maintenance.

[0033] The preferred embodiments of the present invention are described in detail above. However, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, various equivalent transformations can be made to the technical scheme of the present invention, and these equivalent transformations all belong to the protection scope of the present invention.

Claims

1. A tunnel secondary lining spray maintenance vehicle, characterized by: It includes a bracket, a water spray pipe, a nozzle, a driving component, a pump, a slide rail, a pulley, a limit component and a sensing device; a plurality of nozzles are arranged on the water spray pipe, the water spray pipe is connected to the pump, the slide rail is installed on the top of the tunnel, the bracket is connected to the pulley, the bracket is installed on the slide rail through the pulley, the limit component is used to prevent the bracket from falling off the slide rail, the limit component is installed on the slide rail, the sensing device is installed on the bracket, the driving component is used to drive the bracket to move on the slide rail, and the driving component is installed on the bracket.

2. A tunnel secondary lining spray maintenance vehicle according to claim 1, characterized in that: The bracket is also provided with a connecting piece, and the connecting piece is used to connect the bracket and the pulley; the pulley is connected to the bracket through the connecting piece, and two pulleys are provided in total, and the two pulleys are clamped on the slide rail.

3. A tunnel secondary lining spray maintenance vehicle according to claim 2, characterized in that: The driving assembly includes a driving motor, which is mounted on the connecting member. A hole is opened on the right side of the connecting member. The output gear shaft of the driving motor is connected to the pulley on the right side, and the pulley rotates driven by the output gear shaft.

4. A tunnel secondary lining spray maintenance vehicle according to claim 3, characterized in that: The limit assembly includes a limit block and a pulley limit part, the limit block is installed at the head and tail ends of the slide rail, and the limit block is used to prevent the bracket from falling off the slide rail when it moves to the end of the slide rail; the slide rail is made of I-beam, and the pulley limit part is the lower part of the slide rail, and the pulley limit part is used to prevent the bracket from falling off the slide rail when it moves.

5. A tunnel secondary lining spray maintenance vehicle according to claim 4, characterized in that: The sensing device adopts a proximity sensor, which is installed on the connecting piece and electrically connected to the driving motor. When the sensing device senses that the pulley is close to the limit block, the driving motor is controlled to slow down and reverse.

6. A tunnel secondary lining spray maintenance vehicle according to claim 1, characterized in that: The water spray pipe is installed on the bracket, and the pump is connected to the nozzle through the water spray pipe.

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