Movable ring rib feeding mechanism and using method thereof

Abstract

The invention relates to the technical field of tunnel construction, and discloses a movable ring bar feeding mechanism and a using method thereof.The mechanism comprises an annular frame body, and the annular frame body is formed by welding low alloy steel plates and can support a ring rail trolley and bear steel bars; the circular track trolley is installed on the track of the annular frame body and is responsible for toroidal steel bar hauling, the circular track trolley adopts a driving assembly, and the circular track trolley stably moves along the annular track through the driving assembly; and the longitudinal moving trolley is driven in a wheel track mode, and the longitudinal moving trolley is installed on the outer surface of the annular frame body through reverse buckling wheels. Mechanical feeding of the reinforcing steel bars is achieved in a movable feeding mode, and the construction efficiency of the tunnel secondary lining reinforcing steel bars is remarkably improved. And by reducing the requirements for manual carrying and binding, the labor intensity of workers is reduced, and the overall mechanization level of operation is improved. The construction progress is accelerated, the workload of workers is relieved, and the construction environment is improved.

Description

Technical Field

[0001] The invention relates to the technical field of tunnel construction, in particular to a mobile ring reinforcement feeding mechanism and a use method thereof. Background Art

[0002] In tunnel construction, secondary lining is an important process, which usually adopts reinforced concrete structure. Although there are many kinds of steel bar operation trolleys on the market, they are mainly used as construction platforms, and manual installation of steel bars is still required. This traditional manual binding method has high labor intensity and low construction efficiency, and cannot meet the needs of modern tunnel construction.

[0003] For the installation of steel bars, the advanced technology currently used includes using a circular trolley to drag the ring bars at a fixed position, and then workers will move the ring bars longitudinally to the position for binding. However, many areas still use the primitive method of manually pulling steel bars, which increases the labor intensity of workers and reduces construction efficiency, seriously affecting the construction progress. In addition, for large-span tunnels, due to the lack of stability of single-layer steel bars and their inability to bear their own weight, additional support is usually required. These support structures hinder the longitudinal movement of the ring bar trolley and limit the use of existing fixed-position steel bar feeding mechanisms.

[0004] A considerable part of the existing technology does not consider the installation of steel bars in large-span tunnels, and there are design defects, which further narrows the scope of application of steel bar trolleys. The solutions currently available on the market can be roughly divided into two categories: one is to use a trolley to support the steel bars, and the other is to prefabricate the tunnel steel mesh into segments and install them in the tunnel.

[0005] For example, after searching, Chinese invention patent CN118008388A discloses an "anti-overturning device for erecting second lining steel bars in super-large-span flat tunnels", which prevents the collapse of the arch steel bars by setting a support structure on the steel bar binding stand. Although the scheme is simple in concept, it still relies on manual loading, resulting in high labor intensity, low operating efficiency, and potential safety hazards, especially under special geological conditions, which may cause major casualties.

[0006] On the other hand, Chinese invention patent CN116557002A discloses a "standardized rapid assembly construction method for tunnel secondary lining steel bars". The patent is characterized in that after the overall assembly is carried out outside the tunnel, it is transported to the tunnel by a secondary lining steel bar assembly trolley for overall installation with the embedded steel bars. This scheme embodies the idea of ​​partial construction and has advanced concepts. However, since the steel bars must be transported from the inside of the secondary lining trolley, the size of the block segment is limited by the clearance size inside the trolley, resulting in a small size of the block segment, a large number of joints, a long installation time and impact on the passage in the tunnel, which in turn affects the construction of the face.

[0007] Therefore, those skilled in the art have proposed a mobile ring reinforcement feeding mechanism and a method of using the same to solve the above problems. Summary of the invention

[0008] In view of the deficiencies of the prior art, the present invention provides a mobile ring reinforcement feeding mechanism and a method of using the same, which solves the problem that the prior art has low efficiency in reinforcement operation and cannot solve the problem of mechanized reinforcement operation in large-span tunnels.

[0009] To achieve the above objectives, the present invention is implemented through the following technical solutions: a mobile ring rib feeding mechanism, comprising:

[0010] The annular frame is welded from low alloy steel plates and can support the ring rail trolley and carry steel bars;

[0011] The circular rail trolley is installed on the track of the circular frame and is responsible for hauling the steel bars in the circular direction. The circular rail trolley adopts a driving assembly, which is used to move the circular rail trolley smoothly along the circular track;

[0012] A longitudinal moving trolley, which is driven by wheels and rails and is mounted on the outer surface of the annular frame through buckled wheels;

[0013] A supporting oil cylinder is installed at the bottom of the annular frame and is used to provide temporary support. The supporting oil cylinder controls the thrust through a hydraulic system.

[0014] The overload protection component is installed on the outer surface of the annular frame and is used to automatically cut off the power supply of the feeding mechanism when the load exceeds a predetermined value.

[0015] Preferably, a slide rail is provided on the inner side of the annular frame, and the annular rail trolley moves along the slide rail via wheels.

[0016] Preferably, the driving assembly includes a motor and a chain, which are installed on the frame of the circular rail trolley. The motor is fixedly connected to a driving wheel via a transmission shaft, and the chain is installed at the bottom of the circular rail trolley. The rotation of the driving wheel is used to transmit power through the chain to move the circular rail trolley along the circular track.

[0017] Preferably, the overload protection device comprises an electronic overload protector, which is installed on the outer surface of the longitudinal movement trolley, monitors the load in real time through a sensor and outputs a protection signal.

[0018] Preferably, a positioning sensor is provided between the ring rail trolley and the longitudinal movement trolley to ensure that the ring reinforcement can accurately reach the set position during transportation.

[0019] Preferably, the driving assembly may further include a motor, a gear and a rack, wherein the motor is fixedly connected to the gear, the gear and the rack are meshed with each other, and the rack is fixedly connected to the outer surface of the annular frame for converting the rotational motion of the motor into the linear movement of the trolley.

[0020] A method for using a mobile ring reinforcement feeding mechanism comprises the following steps:

[0021] Step S1, the longitudinal moving trolley moves to the set position. In the unloaded state, the longitudinal moving trolley moves along the track through its wheel-rail driving mechanism. The movement of the longitudinal moving trolley is driven by a motor and cooperates with a transmission device so that the trolley can accurately reach the set position.

[0022] Step S2, the ring rail trolley drags the steel bar to move along the track to the desired position. After the longitudinal moving trolley is in place, the ring rail trolley starts to work. At this time, the chain drive system of the ring rail trolley is activated. The ring rail trolley starts to move on the circular track through the motor transmission chain, and the ring rail trolley is connected to the steel bar. The steel bar is dragged to the predetermined position by the ring rail trolley.

[0023] Step S3: When the ring rail trolley reaches the set position, the supporting cylinder starts to work, and the supporting cylinder pushes the steel bar radially to the required position through the hydraulic system;

[0024] Temporary top rod support: after the steel bars are in place, temporary top rods are used for support to ensure the stability of the steel bars before tying and avoid position deviation caused by gravity or external forces;

[0025] Step S4: After the temporary support of the steel bars is in place, the workers perform the binding operation. After completing the steel bar installation once, the mechanism will repeat steps S1 to S4 to gradually complete the installation process of the entire ring bar.

[0026] The present invention provides a mobile ring reinforcement feeding mechanism and a method for using the same. The invention has the following beneficial effects:

[0027] 1. The present invention successfully overcomes the problem of insufficient reinforcement support in large-span tunnels. It can provide stable support during the construction process, ensure the safety and reliability of the reinforcement during installation, avoid the risk of reinforcement collapse caused by insufficient support, and ensure the safety of construction workers.

[0028] 2. The present invention realizes mechanized steel bar loading through mobile loading, which significantly improves the construction efficiency of the tunnel secondary lining steel bar. By reducing the need for manual handling and binding, the labor intensity of workers is reduced, and the overall mechanization level of the operation is improved. This not only speeds up the construction progress, but also reduces the workload of workers and improves the construction environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a front view of the present invention;

[0030] Figure 2 A top view of the present invention;

[0031] Figure 3 It is a side view of the present invention.

[0032] Description of the drawings: 1. Ring frame; 2. Longitudinal transfer trolley; 3. Ring rail trolley. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the specification of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] Please refer to the attached Figure 1 -Attached Figure 3 , an embodiment of the present invention provides a mobile ring rib feeding mechanism, comprising:

[0035] The ring frame 1 is welded from low alloy steel plates and can support the ring rail trolley 3 and carry steel bars;

[0036] Specifically, the annular frame 1 is the core structural part of the present invention, which is formed by welding low alloy steel plates. It can withstand the heavy load generated in the construction of large-span tunnels. The design of the annular frame 1 makes it have sufficient rigidity to prevent deformation during the construction process. The annular frame 1 supports the ring rail trolley 3 installed thereon to ensure its smooth operation during work. At the same time, the annular frame 1 also carries the steel bars required for construction, ensuring the safety and stability of the steel bars during transportation and placement.

[0037] The ring rail trolley 3 is installed on the track of the ring frame 1 and is responsible for hauling the steel bars in the ring direction. The ring rail trolley 3 adopts a driving assembly, and uses the driving assembly to move the ring rail trolley 3 smoothly along the ring track;

[0038] Specifically, the design of the drive assembly allows the speed and direction to be adjusted to meet different construction requirements.

[0039] The circular rail trolley 3 is responsible for circumferentially hauling the steel bars on the circular frame 1. Its design allows the steel bars to be moved along the entire perimeter of the construction area, improving the flexibility of the construction. Through the mechanized movement method, the need for manual handling is reduced, significantly improving work efficiency.

[0040] The longitudinal moving trolley 2 is driven by a wheel-track type, and the longitudinal moving trolley 2 is installed on the outer surface of the annular frame 1 through a buckle wheel;

[0041] Specifically, the longitudinal moving trolley 2 adopts a wheel-track drive design and is installed on the outer surface of the annular frame 1. Its movement mechanism uses the cooperation of the reverse buckle wheel and the track to enable the longitudinal moving trolley 2 to move longitudinally on the annular frame 1. The longitudinal moving trolley 2 realizes the longitudinal movement of the steel bars on the annular frame 1, and can accurately place the steel bars at the designated position, which is convenient for subsequent installation and binding operations. This design allows the longitudinal moving trolley 2 to move flexibly in different working environments and adapt to the needs of various construction scenarios.

[0042] When workers need to move long steel bars from the storage area to the construction area, the ring rail trolley 3 can quickly move on the ring frame 1 to haul multiple steel bars, saving a lot of manpower and time. At the same time, the longitudinal movement trolley 2 can quickly adjust the position where the steel bars need to be placed accurately, further improving work efficiency.

[0043] A support cylinder is installed at the bottom of the annular frame 1 to provide temporary support. The support cylinder controls the thrust through a hydraulic system.

[0044] Specifically, the support oil cylinder is composed of a cylinder body, a piston, a piston rod and a seal. It is installed at the bottom of the annular frame 1 and is mainly used to provide temporary support. The inside of the oil cylinder is filled with hydraulic oil through a hydraulic system to control the thrust and contraction of the oil cylinder.

[0045] During the construction process, the support cylinder can provide stable temporary support for the entire loading mechanism to ensure that it does not tilt or shake during operation. This can effectively improve the safety of the equipment. The support cylinder can adjust the height of the mechanism according to different construction requirements through the thrust controlled by the hydraulic system. This height adjustment function can provide flexibility in different working environments and ensure that the equipment can adapt to various construction conditions. During movement or operation, the support cylinder can provide additional support to reduce the stability problems caused by vibration or uneven load during construction.

[0046] The overload protection component is installed on the outer surface of the annular frame 1 and is used to automatically cut off the power supply of the feeding mechanism when the load exceeds a predetermined value.

[0047] Specifically, the overload protection component is composed of a sensor, a control circuit and a switch. It is installed on the outer surface of the ring frame 1 and can monitor the load in real time. Once the monitored load exceeds a predetermined value, the component will immediately send a signal to cut off the power supply of the feeding mechanism.

[0048] This component continuously monitors the load conditions of the ring rail trolley 3 and the steel bars through sensors. Once the load exceeds the set value, the system will respond quickly and cut off the power supply to ensure that the equipment is in a safe state.

[0049] A slide rail is provided on the inner side of the annular frame 1, and the annular rail trolley 3 moves along the slide rail via wheels.

[0050] Specifically, the slide rail is located on the inner side of the annular frame 1, is made of wear-resistant material, and has a smooth surface to reduce the friction resistance of the ring track trolley 3 during movement. The design of the slide rail ensures that the wheels of the ring track trolley 3 can move smoothly thereon.

[0051] The supporting cylinder, overload protection assembly and slide rail are important components of the mobile ring reinforcement feeding mechanism. The supporting cylinder provides necessary temporary support and height adjustment, the overload protection assembly ensures the safety of the equipment when the load is too large, and the slide rail ensures the smooth operation of the ring rail trolley 3. The effective coordination of these components makes the application of the entire feeding mechanism in tunnel construction safer, more stable and more efficient, greatly improving the mechanization level of construction and reducing the intensity of manual labor.

[0052] The driving assembly includes a motor and a chain, which are installed on the frame of the circular track trolley 3. The motor is fixedly connected to the driving wheel through a transmission shaft. The chain is installed at the bottom of the circular track trolley 3. The rotation of the driving wheel transmits power through the chain to move the circular track trolley 3 along the circular track.

[0053] Specifically, when the motor is started, the rotation of the motor drives the driving wheel to rotate through the transmission shaft. The rotation of the driving wheel drives the chain at the bottom to move, and the chain then pushes the circular track trolley 3 to move forward along the circular track. The design of this system ensures that the circular track trolley 3 can run smoothly and efficiently on the track.

[0054] The overload protection device includes an electronic overload protector, which is installed on the outer surface of the longitudinal movement trolley 2, monitors the load in real time through a sensor and outputs a protection signal.

[0055] A positioning sensor is provided between the ring rail trolley 3 and the longitudinal movement trolley 2 to ensure that the ring reinforcement can accurately reach the set position during the transportation process.

[0056] The driving assembly may also include a motor, a gear and a rack, the motor is fixedly connected to the gear, the gear and the rack are meshed with each other, and the rack is fixedly linked to the outer surface of the annular frame 1 to convert the rotational motion of the motor into the linear movement of the trolley.

[0057] Specifically, when the motor is started, its rotation is transmitted to the rack through the fixedly connected gear. The rotation of the gear pushes the rack to move along its length, so that the circular track trolley 3 moves linearly along the circular track. The meshing relationship between the gear and the rack ensures the smooth and efficient power transmission, so that the trolley can run smoothly on the track.

[0058] A method for using a mobile ring reinforcement feeding mechanism comprises the following steps:

[0059] Step S1, the longitudinal moving trolley 2 moves to the set position. In the unloaded state, the longitudinal moving trolley 2 moves along the track through its wheel-rail driving mechanism. The movement of the longitudinal moving trolley 2 is driven by a motor and cooperates with a transmission device so that the trolley can accurately reach the set position;

[0060] Step S2, the ring rail trolley 3 drags the steel bar to move along the track into place. After the longitudinal movement trolley 2 is in place, the ring rail trolley 3 starts to work. At this time, the chain drive system of the ring rail trolley 3 is activated. Through the motor transmission chain, the ring rail trolley 3 starts to move on the circular track, and the ring rail trolley 3 is connected with the steel bar. The steel bar is dragged to a predetermined position by the ring rail trolley 3;

[0061] Step S3: When the ring rail trolley 3 reaches the set position, the supporting cylinder starts to work, and the supporting cylinder pushes the steel bar radially to the required position through the hydraulic system;

[0062] Temporary top rod support: after the steel bars are in place, temporary top rods are used for support to ensure the stability of the steel bars before tying and avoid position deviation caused by gravity or external forces;

[0063] Step S4: After the temporary support of the steel bars is in place, the workers perform the binding operation. After completing the steel bar installation once, the mechanism will repeat steps S1 to S4 to gradually complete the installation process of the entire ring bar.

[0064] In summary, the present invention successfully overcomes the problem of insufficient reinforcement support in large-span tunnels. It can provide stable support during the construction process, ensure the safety and reliability of the reinforcement during installation, avoid the risk of reinforcement collapse due to insufficient support, ensure the safety of construction personnel, and realize mechanized loading of reinforcement through mobile loading methods, which significantly improves the construction efficiency of the tunnel secondary lining reinforcement. By reducing the need for manual handling and binding, the labor intensity of workers is reduced and the overall mechanization level of the operation is improved. This not only speeds up the construction progress, but also reduces the workload of workers and improves the construction environment.

[0065] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A mobile ring rib feeding mechanism, characterized in that: include: An annular frame (1), the annular frame (1) being welded from low alloy steel plates and capable of supporting the ring rail trolley (3) and bearing steel bars; A circular rail trolley (3) is installed on the track of the circular frame (1) and is responsible for hauling steel bars in a circular direction. The circular rail trolley (3) adopts a driving component, and the driving component is used to move the circular rail trolley (3) smoothly along the circular track; A longitudinal moving trolley (2), wherein the longitudinal moving trolley (2) is driven by a wheel-track type, and the longitudinal moving trolley (2) is installed on the outer surface of the annular frame (1) via a buckle wheel; A support oil cylinder, which is installed at the bottom of the annular frame (1) and is used to provide temporary support, wherein the thrust of the support oil cylinder is controlled by a hydraulic system; An overload protection component is mounted on the outer surface of the annular frame (1) and is used to automatically cut off the power supply of the feeding mechanism when the load exceeds a predetermined value.

2. A mobile ring rib feeding mechanism according to claim 1, characterized in that: A slide rail is provided on the inner side of the annular frame (1), and the annular rail trolley (3) moves along the slide rail via wheels.

3. A mobile ring rib feeding mechanism according to claim 1, characterized in that: The driving assembly comprises a motor and a chain, which are mounted on the frame of the circular track trolley (3); the motor is fixedly connected to a driving wheel via a transmission shaft; the chain is mounted on the bottom of the circular track trolley (3); the rotation of the driving wheel is used to transmit power through the chain, so that the circular track trolley (3) moves along the circular track.

4. A mobile ring rib feeding mechanism according to claim 1, characterized in that: The overload protection device comprises an electronic overload protector which is installed on the outer surface of the longitudinal movement trolley (2) and monitors the load in real time through a sensor and outputs a protection signal.

5. The mobile ring rib feeding mechanism according to claim 1, characterized in that: A positioning sensor is provided between the ring rail trolley (3) and the longitudinal movement trolley (2) to enable the ring reinforcement to accurately reach a set position during the transportation process.

6. The mobile ring rib feeding mechanism according to claim 1, characterized in that: The driving assembly may also include a motor, a gear and a rack, wherein the motor is fixedly connected to the gear, the gear and the rack are meshed with each other, and the rack is fixedly connected to the outer surface of the annular frame (1) to convert the rotational motion of the motor into the linear motion of the trolley.

7. A method for using a mobile ring reinforcement feeding mechanism, characterized in that: A mobile ring reinforcement feeding mechanism according to any one of claims 1 to 6, comprising the following steps: Step S1, the longitudinal moving trolley (2) moves to the set position. In an unloaded state, the longitudinal moving trolley (2) moves along the track through its wheel-rail driving mechanism. The movement of the longitudinal moving trolley (2) is driven by a motor and cooperates with a transmission device, so that the trolley can accurately reach the set position; Step S2, the circular rail trolley (3) drags the steel bar to move along the track to the desired position. After the longitudinal moving trolley (2) is in place, the circular rail trolley (3) starts to work. At this time, the chain drive system of the circular rail trolley (3) is activated. The circular rail trolley (3) starts to move on the circular track through the motor transmission chain, and the circular rail trolley (3) is connected to the steel bar. The steel bar is dragged to the predetermined position by the circular rail trolley (3). Step S3, when the ring rail trolley (3) reaches the set position, the supporting cylinder starts to work, and the supporting cylinder pushes the steel bar radially to the required position through the hydraulic system; Temporary top rod support: after the steel bars are in place, temporary top rods are used for support to ensure the stability of the steel bars before tying and avoid position deviation caused by gravity or external forces; Step S4: After the temporary support of the steel bars is in place, the workers perform the binding operation. After completing the steel bar installation once, the mechanism will repeat steps S1 to S4 to gradually complete the installation process of the entire ring bar.

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