A walking lining trolley for tunnel construction

Abstract

The present invention discloses a walkable lining trolley for tunnel construction, comprising a portal frame, a plurality of templates being hinged to the portal frame through a support assembly, the movement of the support assembly drives the templates to extend and contract, a walking mechanism is arranged at the bottom of the portal frame, drives the lining trolley to move forward and backward, a shock absorbing mechanism is arranged between the walking mechanism and the portal frame, a sensor is arranged on the inner side of the portal frame near the template opening end, an alarm is installed on the side of the top of the portal frame, and a warning light is installed on the inner top of the portal frame, the sensor, the alarm and the warning light are electrically connected and controlled by an external controller, and a buffer mechanism is installed on the outer side of the portal frame near the template opening end. The present invention has a reasonable design, reduces the up and down fluctuation of the vehicle body during the walking process of the lining trolley, and prevents the engineering vehicle from colliding with the portal frame.

Description

Technical Field

[0001] The invention relates to the field of building construction, and in particular to a walking lining trolley for tunnel construction. Background Art

[0002] Tunnel lining trolley is a special equipment used for secondary lining construction of tunnels. With the development of my country's economy, the construction of railways and highways in my country has been accelerating, and the number of railway, highway tunnels and water conservancy culverts has been increasing. In the process of tunnel construction, the secondary lining of tunnel concrete is a very important process. Lining trolleys have become a must-have equipment in tunnel construction. However, there are also some lining trolleys with different structures.

[0003] After searching, it was found that the invention of Patent No. CN201610266932.X provides a double-hinged reversible tunnel lining trolley steel end mold and a tunnel lining trolley, including: an end mold body, which is a fan-shaped structure with an inner arc surface and an outer arc surface; a force-bearing mechanism, including a secondary force-bearing channel steel extending along the curvature direction of the end mold body, and a force-bearing channel steel extending along the width direction of the end mold body, the secondary force-bearing channel steel is clamped between the end mold body and the force-bearing channel steel, and the end of the force-bearing channel steel close to the inner arc surface is connected with a first connecting plate, and the end close to the outer arc surface is equipped with a retractable fixing rod; a telescopic mechanism, including a secondary force-bearing angle steel extending along the length direction of the end mold body, the secondary force-bearing channel steel is connected to the secondary force-bearing angle steel, and the secondary force-bearing angle steel is movably connected to the end mold body through an adjustment component. When in use, the displacement value of the end mold body in its width direction is adjusted by the adjustment component.

[0004] The invention of patent number CN201120252042.6 provides a lifting system of a tunnel lining trolley and a tunnel lining trolley, comprising a winch (1), a steel wire rope (2), an electric hoist (9), and an I-beam (5), wherein two I-beams (5) are arranged in parallel and spaced apart, connected to the lower part of a cross beam (6) on the top of the trolley and extending in the longitudinal direction of the trolley; each I-beam (5) is suspended with an electric hoist (9) having the same lifting and traveling speeds, and a first cross beam (8) is connected between the two electric hoists (9); the winch (1) is connected to a corresponding position of a cross beam (11) on the lower part of the trolley; the linear speed of a drum (101) of the winch (1) is the same as the traveling speed of the electric hoist (9), and the start and stop of the winch (1) are synchronized with the electric hoist (9).

[0005] The invention of patent number CN201810209043.9 discloses a rear-matching synchronous lining trolley, including a trailer frame; a sliding lining frame is arranged outside the trailer frame, and the lining frame tunnel bottom can be supported; the lining frame is supported and connected with a vertical mold device for lining, and a ventilation component and a slag conveying component are arranged inside the lining frame. The trailer frame provides a working space for the tunneling locomotive, and the vertical mold device is installed on the lining frame outside the trailer frame. The vertical mold device is supported by the lining frame to complete the construction of the secondary lining. The ventilation component and the slag conveying component of the tunneling device are arranged inside the frame structure of the lining frame, which can effectively protect the above structure and does not affect the laying and supporting position of the external vertical mold device during construction, avoiding the need to remove the fixed tunnel ventilation pipe and continuous belt conveyor structure first when performing the secondary lining construction, and reassemble them when the secondary lining is completed and the tunneling continues.

[0006] The traveling device of the tunnel lining trolley on the current market travels on the track. When the traveling device travels, the two sections of the track need to be moved forward alternately, that is, each time a section of lining is completed, the rear section of the track needs to be moved to the front, and the trolley moves forward after the track is docked. At present, in the field of tunnel lining trolley construction technology, the lining trolley has no vibration reduction device. Due to the large load-bearing capacity and large support distance of the trolley main beam, it is inevitable to produce downward bending deformation during the use of the lining trolley. During the walking process, the main body of the trolley will fluctuate up and down. Long-term repeated fluctuations will cause impacts on the main beam, main bracket and fasteners of the trolley, reducing the service life of the lining trolley. During lining, an engineering vehicle is required to transport concrete to the lining trolley and pour it into the formwork. When the engineering vehicle enters and exits the lining trolley, it may collide with the lining trolley portal frame, causing impacts on the main beam, main bracket and fasteners of the trolley, reducing the service life of the lining trolley. Summary of the invention

[0007] Therefore, in order to solve the above-mentioned shortcomings, the present invention provides a travelable lining trolley for tunnel construction with a reasonable design, which can reduce the up and down fluctuation of the lining trolley during its travel and prevent the collision between the engineering vehicle and the portal frame. The present invention has a reasonable design, which can reduce the up and down fluctuation of the lining trolley during its travel and prevent the collision between the engineering vehicle and the portal frame. By reasonably designing the shock absorbing mechanism, the shock absorbing mechanism can buffer the vibration generated by the traveling mechanism when traveling on the track, thereby reducing the up and down fluctuation of the vehicle body.

[0008] The present invention is implemented in this way: a walkable lining trolley for tunnel construction is constructed, including a portal frame, a plurality of templates are hinged to the portal frame through a support assembly, the support assembly moves, drives the template to extend and contract, a walking mechanism is arranged at the bottom of the portal frame, drives the lining trolley to move forward and backward, a shock absorbing mechanism is arranged between the walking mechanism and the portal frame, a sensor is arranged on the inner side of the portal frame near the template opening end, an alarm is installed on the side of the top of the portal frame, and a warning light is installed on the inner top of the portal frame. The sensor, the alarm and the warning light are electrically connected and controlled by an external controller. The buffer mechanism is installed on the outer side of the portal frame near the template opening end. When the lining trolley moves, the shock absorbing mechanism buffers the vibration generated by the traveling mechanism when it moves on the track, reducing the up and down fluctuation of the vehicle body. The sensor continuously monitors the distance between the engineering vehicle or other vehicles and the entrance and exit sides of the portal frame. When the vehicle approaches the portal frame at a certain distance, the sensor sends a signal to the controller, and the controller controls the alarm to sound and the warning light to flash, reminding the driver to control the vehicle. If the portal frame is installed, the buffer mechanism buffers the collision to reduce the damage received by the lining trolley.

[0009] Furthermore, the shock absorbing mechanism includes a mounting plate, an elastic member A, a guide rod and a connecting plate. The mounting plate is connected to the bottom end of the door frame, the connecting plate is installed on the upper end surface of the walking mechanism, the guide rod is arranged between the connecting plate and the mounting plate, the guide rod and the connecting plate are slidably connected, the elastic member A is arranged between the connecting plate and the mounting plate, and is sleeved on the outside of the guide rod. The vibration generated when the traveling mechanism moves causes the connecting plate to fluctuate up and down along the direction of the guide rod, and the elastic member A buffers and eliminates the fluctuation, thereby reducing the vibration.

[0010] Furthermore, the buffer mechanism includes a buffer plate and an elastic member B. Two groups of elastic members B are arranged on the back of the buffer plate and are kept connected by a pair of connecting members. A mounting member is arranged at the far end of the buffer plate of the elastic member B. After the opening surface of the door frame is impacted, the buffer plate is subjected to force, and the elastic member B buffers the force exerted on the buffer plate, thereby reducing the impact exerted on the door frame.

[0011] Furthermore, two groups of buffer hydraulic cylinders are arranged on the back of the mounting piece, the cylinder bodies of the buffer hydraulic cylinders are mounted on the side of the door frame, and the piston rods of the buffer hydraulic cylinders are kept connected to the mounting piece to further buffer the impact.

[0012] Furthermore, the template is made of high manganese alloy steel composed of Mn and Cr alloy elements, and its weight percentage is as follows: C: 0.9-1.0%; Si: 0.7-0.9%; Cr: 3%; Mn: 10-11%; S: ≤0.03%; P: ≤0.06%; and the balance is Fe.

[0013] Furthermore, before pouring concrete, the outer surface of the car formwork, the working window, and the grouting port must be pre-coated with a release agent to reduce the adhesion of the formwork surface during demoulding.

[0014] Furthermore, the lining trolley is implemented as follows; after the trolley moves to the predetermined lining position, the rail clamp is clamped, and the foundation jack is unscrewed to make the jack tight to the rail surface (if there is a ground jack, the ground jack should be installed and tightened), and the vibration generated when the traveling mechanism moves makes the connecting plate fluctuate up and down along the guide rod direction, and the elastic member A buffers and eliminates the fluctuation to reduce the vibration; before pouring concrete, the outer surface of the trolley formwork, the working window, and the grouting port must be pre-coated with a release agent to reduce the adhesion of the formwork surface during demoulding; when pouring concrete, first feed from the lowest working window of the side formwork, and pour until the concrete is poured. When it is almost flush with the working window, close the working window, and then pour from the second row of working windows; and so on, finally seal the top through the grouting port; after the pouring is completed, the concrete solidifies for a certain period of time before demoulding; when the engineering vehicle transports the concrete into the trolley, the sensor continuously monitors the distance between the engineering vehicle or other vehicles and the inlet and outlet sides of the gantry. When the vehicle approaches the gantry at a certain distance, the sensor sends a signal to the controller, and the controller controls the alarm to sound and the warning light to flash, reminding the driver to control the vehicle. If it hits the gantry, the buffer mechanism will buffer the impact to reduce the damage to the lining trolley.

[0015] The present invention has the following advantages: Compared with similar equipment, the lining trolley of the present invention has the following improvements and advantages;

[0016] 1. The present invention provides a walkable lining trolley for tunnel construction, including a gantry; in addition, it also includes a plurality of templates hinged to the gantry through a support assembly, and the support assembly moves to drive the template to extend and contract; it also includes a walking mechanism arranged at the bottom of the gantry to drive the lining trolley to move forward and backward; it also includes a shock absorbing mechanism arranged between the walking mechanism and the gantry; it also includes a sensor arranged on the inner side of the gantry near the template opening end; it also includes an alarm installed on the side of the top of the gantry; it also includes a warning light installed on the top of the inner side of the gantry, and the sensor, the alarm and the warning light are electrically connected and controlled by an external controller; it also includes a buffer mechanism installed on the outer side of the gantry near the template opening end. During implementation; after the trolley walks to the predetermined lining position, the rail clamp is clamped, and the basic jack is rotated out to make the jack tight to the rail surface (if there is a ground jack, the ground jack should also be installed and tightened), and the vibration generated when the traveling mechanism moves causes the connecting plate to fluctuate up and down along the guide rod direction, and the elastic member A buffers and eliminates the fluctuation to reduce the vibration. Before pouring concrete, the outer surface of the trolley template, the working window, and the grouting port must be pre-coated with a release agent to reduce the adhesion of the template surface during demoulding. When pouring concrete, first feed from the bottom row of the side template working window. When the concrete is almost flush with the working window, close the working window, and then pour from the second row of working windows. And so on, finally cap the top through the grouting port. After the pouring is completed, the concrete solidifies for a certain period of time before demoulding. When the engineering vehicle transports concrete into the trolley, the sensor continuously monitors the distance between the engineering vehicle or other vehicles and the entrance and exit sides of the gantry. When the vehicle approaches the gantry at a certain distance, the sensor sends a signal to the controller, and the controller controls the alarm to sound and the warning light flashes to remind the driver to control the vehicle. If it hits the gantry, the buffer mechanism buffers the collision and reduces the damage to the lining trolley. The present invention is reasonably designed to reduce the up and down fluctuation of the lining trolley during the walking process and prevent the engineering vehicle from colliding with the gantry. Through the reasonable design of the shock absorbing mechanism, the shock absorbing mechanism buffers the vibration generated by the traveling mechanism when it travels on the track, reducing the up and down fluctuation of the vehicle body.

[0017] Secondly, the shock absorbing mechanism is reasonably designed. The shock absorbing mechanism can buffer the vibration generated when the traveling mechanism moves on the track and reduce the up and down fluctuation of the vehicle body.

[0018] Thirdly, the sensor is arranged on the inner side of the portal frame near the template opening end, the alarm is installed on the side of the top of the portal frame, and the warning light is installed on the inner top of the portal frame. The sensor, alarm and warning light are electrically connected and controlled by an external controller. When the vehicle approaches the portal frame at a certain distance, the sensor sends a signal to the controller, and the controller controls the alarm to sound and the warning light to flash, reminding the driver to control the vehicle. If the vehicle hits the portal frame, the buffer mechanism will buffer the impact and reduce the damage to the lining trolley.

[0019] Fourthly, the buffer mechanism is reasonably designed. The buffer mechanism includes a buffer plate and an elastic member B. Two groups of elastic members B are arranged on the back of the buffer plate and are connected by a pair of connecting members. A mounting member is arranged at the far end of the buffer plate of the elastic member B. When the opening surface of the door frame is impacted, the buffer plate is subjected to force, and the elastic member B buffers the force applied to the buffer plate, thereby reducing the impact applied to the door frame.

[0020] 5. Reasonably design the buffer hydraulic cylinder. Two groups of buffer hydraulic cylinders are set on the back of the mounting piece. The buffer hydraulic cylinder body is installed on the side of the door frame. The buffer hydraulic cylinder piston rod remains connected with the mounting piece to further buffer the impact.

[0021] 6. The template is made of high manganese alloy steel composed of Mn and Cr alloy elements, and its weight percentage is as follows: C: 0.9-1.0%; Si: 0.7-0.9%; Cr: 3%; Mn: 10-11%; S: ≤0.03%; P: ≤0.06%; the balance is Fe. The template with the above structure and material has higher overall bearing capacity and strength than ordinary low-carbon steel, which can increase the service life of the template and reduce the maintenance cost and other losses of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of the present invention;

[0023] Figure 2 is a front view of the present invention;

[0024] Figure 3 is a side view of the present invention;

[0025] Figure 4 yes Figure 3 A is a partial enlarged view in the middle;

[0026] Figure 5 yes Figure 3 Middle partial enlarged image B;

[0027] Figure 6~Figure 7 It is a structural diagram of the shock absorbing mechanism;

[0028] Figure 8 It is a structural diagram of the buffer mechanism.

[0029] In the figure: 1. Template; 2. Walking mechanism; 3. Door frame; 4. Shock absorption mechanism; 4.01. Mounting plate; 4.02. Elastic part A; 4.03. Guide rod; 4.04. Connecting plate; 5. Alarm; 6. Support assembly; 7. Buffer mechanism; 7.01. Buffer plate; 7.02. Connecting part; 7.03. Elastic part B; 7.04. Mounting part; 7.05 Buffer hydraulic cylinder; 8. Warning light; 9. Sensor. DETAILED DESCRIPTION

[0030] The following will be combined with the attached Figure 1-Figure 8 The present invention is described in detail, and the technical solutions in the embodiments of the present invention are clearly and completely described. 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.

[0031] The present invention provides a walking lining trolley for tunnel construction through improvement, and the implementation method is as follows; the lining trolley includes a gantry 3; in addition, it also includes a plurality of templates 1 hinged with the gantry 3 through a support assembly 6, and the support assembly 6 moves to drive the template 6 to extend and contract; it also includes a walking mechanism 2 arranged at the bottom of the gantry 3, driving the lining trolley to move forward and backward; it also includes a shock absorbing mechanism 4 arranged between the walking mechanism 2 and the gantry 3; it also includes a sensor 9 arranged on the inner side of the gantry 3 near the opening end of the template 1; it also includes an alarm 5 installed on the top side of the gantry 3; it also includes a warning light 8 installed on the inner top of the gantry 3, and the sensor 9, the alarm 5 and the warning light 8 are electrically connected and controlled by an external controller; it also includes a buffer mechanism 7 installed on the outer side of the opening end of the template 1 near the gantry 3. The present invention is reasonably designed to reduce the up and down fluctuation of the vehicle body during the walking process of the lining trolley, and prevent the collision between the engineering vehicle and the gantry. Through the reasonable design of the shock absorbing mechanism, the shock absorbing mechanism buffers the vibration generated by the traveling mechanism when traveling on the track, reducing the up and down fluctuation of the vehicle body.

[0032] When the present invention is implemented, the shock absorbing mechanism 4 includes a mounting plate 4.01, an elastic member A4.02, a guide rod 4.03 and a connecting plate 4.04. The mounting plate 4.01 is connected to the bottom end of the door frame 3, the connecting plate 4.04 is installed on the upper end surface of the walking mechanism 2, the guide rod 4.03 is arranged between the connecting plate 4.04 and the mounting plate 4.01, the guide rod 4.03 and the connecting plate 4.04 are slidingly connected, and the elastic member A4.02 is arranged between the connecting plate 4.04 and the mounting plate 4.01, and is sleeved on the outside of the guide rod 4.03.

[0033] When the present invention is implemented, the buffer mechanism 7 includes a buffer plate 7.01 and an elastic member B7.03. Two groups of elastic members B7.03 are arranged on the back of the buffer plate 7.01 and are connected by a pair of connecting members 7.02. A mounting member 7.04 is arranged at the end of the elastic member B7.03 far from the buffer plate 7.01. The advantage is that the buffer mechanism 7 is reasonably designed. When the door frame opening surface is impacted, the buffer plate 7.01 is subjected to force, and the elastic member B7.03 buffers the force exerted on the buffer plate, thereby reducing the impact exerted on the door frame 3.

[0034] When the present invention is implemented, two groups of buffer hydraulic cylinders 7.05 are arranged on the back of the mounting member 7.04, the cylinder body of the buffer hydraulic cylinder 7.05 is mounted on the side of the door frame 1, and the piston rod of the buffer hydraulic cylinder 7.05 is connected to the mounting member 7.04. The buffer hydraulic cylinder 7.05 is reasonably designed, and the piston rod of the buffer hydraulic cylinder is connected to the mounting member 7.04, so as to further buffer the impact.

[0035] During implementation, the template 1 is made of high manganese alloy steel composed of Mn and Cr alloy elements, and its weight percentage is as follows: C: 0.9-1.0%; Si: 0.7-0.9%; Cr: 3%; Mn: 10-11%; S: ≤0.03%; P: ≤0.06%; the balance is Fe. The template 1 with the above structure and material has higher overall bearing capacity and strength than ordinary low-carbon steel, so that it can increase the service life of the template 1 and reduce the maintenance cost and other losses of the equipment.

[0036] During implementation, the outer surface of the front car formwork 1, the working window, and the grouting port must be pre-coated with a release agent before pouring concrete to reduce the adhesion of the formwork surface during demoulding.

[0037] The overall implementation process of the present invention is as follows; after the trolley moves to the predetermined lining position, the track clamp is clamped, and the foundation jack is unscrewed so that the jack is tight to the rail surface (if there is a ground jack, the ground jack should also be installed and tightened). The vibration generated when the traveling mechanism 2 moves causes the connecting plate 4.04 to fluctuate up and down along the direction of the guide rod 4.03, and the elastic member A4.02 buffers and eliminates the fluctuation to reduce the vibration. Before pouring concrete, the outer surface of the trolley template 1, the working window, and the grouting port must be pre-coated with a release agent to reduce the adhesion of the template surface during demolding. When pouring concrete, first feed from the bottom row of working windows of the side template 1. When pouring until the concrete is almost flush with the working window, close the working window, and then pour from the second row of working windows. And so on, finally cap the top through the grouting port. After the pouring is completed, the concrete is solidified for a certain period of time and then demolded. When the construction vehicle transports concrete into the trolley, the sensor 9 continuously monitors the distance between the construction vehicle or other vehicles and the entrance and exit sides of the gantry. When the vehicle approaches the gantry 3 at a certain distance, the sensor 9 sends a signal to the controller, and the controller controls the alarm 5 to sound and the warning light 8 to flash, reminding the driver to control the vehicle. If the vehicle hits the gantry 3, the buffer mechanism 7 buffers the impact and reduces the damage to the lining trolley.

[0038] Compared with similar equipment, the lining trolley of the present invention has the following improvements and advantages:

[0039] First, the present invention provides a walkable lining trolley for tunnel construction, including a portal frame 3; in addition, it also includes a plurality of templates 1 hinged to the portal frame 3 through a support assembly 6, and the support assembly 6 moves to drive the template 6 to extend and contract; it also includes a walking mechanism 2 arranged at the bottom of the portal frame 3, driving the lining trolley to move forward and backward; it also includes a shock absorbing mechanism 4 arranged between the walking mechanism 2 and the portal frame 3; it also includes a sensor 9 arranged on the inner side of the opening end of the portal frame 3 near the template 1; it also includes an alarm 5 installed on the top side of the portal frame 3; it also includes a warning light 8 installed on the inner top of the portal frame 3, the sensor 9, the alarm 5 and the warning light 8 are electrically connected and controlled by an external controller; it also includes a buffer mechanism 7 installed on the outer side of the opening end of the portal frame 3 near the template 1. During implementation, after the trolley moves to the predetermined lining position, the track clamp is clamped, and the foundation jack is unscrewed to make the jack tight to the rail surface (if there is a ground jack, the ground jack should also be installed and tightened). The vibration generated when the traveling mechanism 2 moves makes the connecting plate 4.04 fluctuate up and down along the guide rod 4.03. The elastic member A4.02 buffers and eliminates the fluctuation to reduce the vibration. Before pouring concrete, the outer surface, working window, and grouting port of the trolley template 1 must be pre-coated with a release agent to reduce the adhesion of the template surface during demolding. When pouring concrete, first feed from the bottom row of working windows of the side template 1. When pouring until the concrete is almost flush with the working window, close the working window, and then pour from the second row of working windows. And so on, finally cap the top through the grouting port. After the pouring is completed, the concrete solidifies for a certain period of time and then demolds. When the engineering vehicle transports concrete into the trolley, the sensor 9 continuously monitors the distance between the engineering vehicle or other vehicles and the entrance and exit sides of the gantry. When the vehicle approaches the gantry 3 at a certain distance, the sensor 9 sends a signal to the controller, and the controller controls the alarm 5 to sound and the warning light 8 to flash, reminding the driver to control the vehicle. If the gantry 3 is hit, the buffer mechanism 7 buffers the impact and reduces the damage to the lining trolley. The present invention is reasonably designed to reduce the up and down fluctuation of the lining trolley during its movement and prevent the engineering vehicle from colliding with the gantry. By reasonably designing the shock absorbing mechanism, the shock absorbing mechanism buffers the vibration generated by the traveling mechanism when it travels on the track and reduces the up and down fluctuation of the vehicle body.

[0040] Secondly, the shock absorbing mechanism 4 is reasonably designed. The shock absorbing mechanism 4 buffers the vibration generated when the traveling mechanism 2 travels on the track, thereby reducing the up and down fluctuation of the vehicle body.

[0041] 3. The sensor 9 is arranged on the inner side of the portal frame 3 near the template opening end, the alarm 5 is installed on the side of the top of the portal frame, and the warning light 9 is installed on the inner top of the portal frame. The sensor 9, the alarm 5 and the warning light 8 are electrically connected and controlled by an external controller. When the vehicle approaches the portal frame 3 at a certain distance, the sensor 9 sends a signal to the controller, and the controller controls the alarm 5 to sound and the warning light 8 to flash, reminding the driver to control the vehicle. If the vehicle hits the portal frame 3, the buffer mechanism 4 buffers the impact to reduce the damage received by the lining trolley.

[0042] Fourthly, the buffer mechanism 7 is reasonably designed. The buffer mechanism 7 includes a buffer plate 7.01 and an elastic member B7.03. Two groups of elastic members B7.03 are arranged on the back of the buffer plate 7.01 and are connected by a pair of connecting members 7.02. A mounting member 7.04 is arranged on the far end of the elastic member B7.03 from the buffer plate 7.01. When the opening surface of the door frame is impacted, the buffer plate 7.01 is subjected to force, and the elastic member B7.03 buffers the force applied to the buffer plate, thereby reducing the impact applied to the door frame 3.

[0043] 5. Reasonable design of the buffer hydraulic cylinder 7.05. Two groups of buffer hydraulic cylinders 7.05 are arranged on the back of the mounting member 7.04. The buffer hydraulic cylinder body 7.05 is installed on the side of the door frame 3. The buffer hydraulic cylinder piston rod is connected to the mounting member 7.04 to further buffer the impact.

[0044] 6. The template 1 is made of high manganese alloy steel composed of Mn and Cr alloy elements, and its weight percentage is as follows: C: 0.9-1.0%; Si: 0.7-0.9%; Cr: 3%; Mn: 10-11%; S: ≤0.03%; P: ≤0.06%; the balance is Fe. The template 1 with the above structure and material has higher overall bearing capacity and strength than ordinary low-carbon steel, so that it can increase the service life of the template 1 and reduce the maintenance cost and other losses of the equipment.

[0045] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A walkable lining trolley for tunnel construction, comprising a portal (3); characterized in that: It also includes a plurality of templates (1) which are hinged to the door frame (3) via a support assembly (6), wherein the movement of the support assembly (6) drives the templates (6) to extend and contract; It also includes a walking mechanism (2) which is arranged at the bottom of the door frame (3) and drives the lining trolley to move forward and backward; A shock absorbing mechanism (4) is arranged between the walking mechanism (2) and the door frame (3); It also includes a sensor (9) which is arranged on the inner side of the door frame (3) near the opening end of the template (1); It also includes an alarm (5) and a warning light (8), wherein the alarm (5) is mounted on the top side of the door frame (3); and the warning light (8) is mounted on the top inside the door frame (3); The sensor (9), the alarm (5) and the warning light (8) are electrically connected and controlled by an external controller; It also includes a buffer mechanism (7) mounted on the outer side surface of the door frame (3) near the opening end of the template (1); The shock absorbing mechanism (4) comprises a mounting plate (4.01), an elastic member A (4.02), a guide rod (4.03) and a connecting plate (4.04); the mounting plate (4.01) is connected to the bottom end of the door frame (3); the connecting plate (4.04) is mounted on the upper end surface of the walking mechanism (2); the guide rod (4.03) is arranged between the connecting plate (4.04) and the mounting plate (4.01); the guide rod (4.03) and the connecting plate (4.04) are slidably connected; the elastic member A (4.02) is arranged between the connecting plate (4.04) and the mounting plate (4.01) and is sleeved outside the guide rod (4.03); The buffer mechanism (7) comprises a buffer plate (7.01) and an elastic member B (7.03); two groups of elastic members B (7.03) are arranged on the back of the buffer plate (7.01) and are connected via a pair of connecting members (7.02); a mounting member (7.04) is arranged at the end of the elastic member B (7.03) far from the buffer plate (7.01); When the vehicle approaches the gantry (3) at a certain distance, the sensor (9) sends a signal to the controller, and the controller controls the alarm (5) to sound and the warning light (8) to flash, reminding the driver to control the vehicle. If the vehicle hits the gantry (3), the buffer mechanism (7) buffers the impact, thereby reducing the damage to the lining trolley.

2. A walkable lining trolley for tunnel construction according to claim 1, characterized in that: Two groups of buffer hydraulic cylinders (7.05) are arranged on the back of the mounting member (7.04); the cylinder bodies of the buffer hydraulic cylinders (7.05) are mounted on the side of the door frame (1); and the piston rods of the buffer hydraulic cylinders (7.05) remain connected to the mounting member (7.04).

3. The walkable lining trolley for tunnel construction according to claim 1, characterized in that: in, The template (1) is made of high manganese alloy steel composed of Mn and Cr alloy elements, and its weight percentage is as follows: C: 0.9-1.0%; Si: 0.7-0.9%; Cr: 3%; Mn: 10-11%; S: ≤0.03%; P: ≤0.06%; the remainder is Fe; the template (1) with the above structure and material has a higher overall load-bearing capacity and strength than ordinary low-carbon steel, which can increase the service life of the template (1) and reduce equipment maintenance costs and other losses.

4. The walkable lining trolley for tunnel construction according to claim 1, characterized in that: Before pouring concrete, the outer surface of the front car formwork (1), the working window, and the grouting port must be pre-coated with a release agent to reduce the adhesion of the formwork surface during demoulding.

5. The walkable lining trolley for tunnel construction according to claim 1, characterized in that: The lining trolley is implemented as follows; after the trolley moves to the predetermined lining position, the rail clamp is clamped, and the foundation jack is screwed out so that the jack is tight to the rail surface (if there is a ground jack, the ground jack should also be installed and tightened). The vibration generated by the travel mechanism (2) during travel causes the connecting plate (4.04) to fluctuate up and down along the guide rod (4.03). The elastic member A (4.02) buffers and eliminates the fluctuation to reduce the vibration; before pouring concrete, the outer surface, working window, and grouting port of the trolley template (1) must be pre-coated with a release agent to reduce the adhesion of the template surface during demoulding; when pouring concrete, first feed from the bottom row of working windows of the side template (1), and when the concrete is poured until it is almost flush with the working window, close the working window, and then pour from the second row of working windows; and so on, and finally cap the top through the grouting port; after the pouring is completed, the concrete is solidified for a certain period of time and then demoulding is performed; When the engineering vehicle transports concrete into the trolley, the sensor (9) continuously monitors the distance between the engineering vehicle or other vehicles and the entrance and exit sides of the portal frame.

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