CN101712323B - Movable wheel type trolley supporting system for long-distance overlapping shield tunnel of small clear distance - Google Patents

Abstract

The invention discloses a movable wheeled trolley support system for long-distance and small-distance overlapping shield tunnels, which includes one or more sets of identical structures that can move back and forth on the laid steel rails in the completed shield tunnel. Multiple sets of wheeled support trolleys are assembled as a whole through connecting bars; wheeled support trolleys include a frame, a walking mechanism and a multi-channel support mechanism arranged horizontally on the frame, and the support mechanism includes a symmetrical layout. Multiple wheeled support mechanisms on the vehicle frame and multiple support pushing devices, multiple wheeled support mechanisms are arranged inside the completed shield tunnel along the circumferential direction and are all connected with the ring paved on the inner wall of the shield tunnel. Concrete segments are in contact. The invention has the advantages of reasonable structure, convenient installation and arrangement, easy operation and good use effect, and at the same time of continuous uninterrupted support, it overcomes the problems of very difficult installation and reverse work existing in the existing cross support system, and greatly improves the support efficiency.

Description

Movable wheeled trolley support system for long-distance and small-space overlapping shield tunneling

technical field

The invention belongs to the technical field of construction of long-distance and small-space overlapping shield tunnels, and in particular relates to a movable wheeled trolley support system for long-distance and small-space overlapping shield tunnels.

Background technique

From domestic and foreign engineering practices, there are not many engineering examples of long-distance and small-distance overlapping shield tunnels, and they are mainly parallel tunnels or short-distance and small-angle overlapping cross tunnel projects. During the construction of overlapping shield tunnels, because the structure of the first tunnel is affected by the construction of the subsequent shield tunnel, the structure of the preceding tunnel in front of the shield head will bear the greater pressure of the construction of the subsequent shield tunnel during the shield construction of the latter tunnel, so There will be a certain degree of disturbance; and the leading tunnel behind the shield tail will be deformed due to the unloading effect of the passing of the shield tunnel in the rear tunnel. Therefore, for the mutual influence of overlapping tunnel construction, it is necessary to carry out support reinforcement in the preceding tunnel to reduce the adverse effects of subsequent tunnel construction.

At present, for parallel shield tunnels or short-distance and small-angle overlapping cross-tunnel projects, when the shield construction of the subsequent tunnel is carried out, the support system in the preceding or completed tunnel mainly adopts the cross support system. The idea of the support system The main purpose is to reinforce the leading tunnel with steel supports to help the segments withstand external pressure and to control the deformation and sliding of the segments. The above-mentioned cross support system is mainly composed of steel rings, cross steel supports and four vertical I-beams. The steel rings and cross steel supports are located at the ring joints of the segments, and the longitudinal steel supports are arranged longitudinally along the tunnel at the 16 o'clock, 4 o'clock, 8 o'clock and 12 o'clock positions of the tunnel respectively. The steel rings, cross supports and longitudinal I-shaped The steel is connected by bolts to form an overall support system.

In actual use, the cross support system has the advantages of simple structure and clear functions. The main idea of the support system is to use steel supports to reinforce the tunnel in advance to help the segments withstand external pressure and control the deformation and sliding of the segments. For long-distance and small-pitch overlapping shield tunnel support, the installation and transportation of the cross support system is very difficult. In summary, during the construction of long-distance and small-space overlapping shield tunnels, how to achieve continuous and uninterrupted support in the preceding tunnel is the key to the problem. At present, for long-distance and small-space overlapping shield tunnels, due to the large pressure generated by the construction of the subsequent tunnel on the segments in the previous tunnel and the impact of unloading after the shield passes through, the internal force of the previous tunnel structure will have a sudden change. Therefore, it is necessary to The key point is to carry out support reinforcement in the leading tunnel, and with the continuous construction of shield tunneling in the trailing tunnel, to realize continuous and uninterrupted support in the leading tunnel.

Contents of the invention

The technical problem to be solved by the present invention is to provide a movable wheeled trolley support system for long-distance and small-distance overlapping shield tunnels in view of the deficiencies in the above-mentioned prior art. It is simple, effective in use, and high in practical value. While supporting continuously, it overcomes the difficulties of installation and unlucky work in the existing cross support system, and greatly improves the support efficiency.

In order to solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a movable wheeled trolley support system for long-distance and small-space overlapping shield tunnels, which is characterized in that: One or more sets of wheeled support trolleys with the same structure moving back and forth on the laid rails, among the multiple sets of wheeled support trolleys, the adjacent two groups of wheeled support platform workshops are connected by connecting bars and the multiple sets of wheeled support trolleys The supporting trolley is assembled as a whole through connecting bars; the wheeled supporting trolley includes a vehicle frame, a plurality of running mechanisms installed on the bottom of the vehicle frame and capable of moving back and forth on the rails, and horizontally evenly arranged on the vehicle frame And it is a multi-channel support mechanism that can stably support the completed shield tunnel at the same time. The support mechanism includes a plurality of symmetrically arranged on the vehicle frame with the vertical central axis of the completed shield tunnel as the center line. The wheeled support mechanisms and correspondingly a plurality of support pushing devices respectively arranged between the plurality of wheeled support mechanisms and the vehicle frame, and the plurality of wheeled support mechanisms are arranged in the completed shield tunnel along the circumferential direction And all of them are in contact with the circular concrete segments paved on the inner wall of the shield tunnel that has been constructed.

It also includes a position locking and rear propelling device installed at the rear of the one or more sets of wheeled supporting trolleys with the same structure.

The position locking and rear propulsion device includes a rear propulsion frame, a plurality of rail locks installed on the bottom of the rear propulsion frame, and left and right symmetrical arrangements between the rear propulsion frame and the front set of wheeled The multiple rear parts of the support platform workshop are used to push forward, and the installation position of the rail locker corresponds to the laying position of the steel rail.

The rear pushing forward device is a rear pushing oil cylinder, the front of the rear pushing frame is provided with a rear pushing oil cylinder seat beam for fixing the rear pushing oil cylinder, and the front set of wheel supports The rear part of the trolley is provided with a crossbeam installed on the top of the cylinder piston rod for the rear push cylinder.

The connecting bar is a detachable connecting bar; a plurality of pushing devices for forward propulsion are respectively installed in the adjacent two groups of wheeled support platform workshops, and the pushing devices for forward propulsion of the multiple vehicle groups are arranged symmetrically on the left and right Between two adjacent groups of wheeled support trolleys.

The pushing device for pushing the vehicle group forward is the vehicle group pushing cylinder, the bottom of the vehicle group pushing cylinder is fixed on the frame of the previous group of wheeled support trolleys and the top of the cylinder piston rod is installed on the rear one. On the frame of the group wheel type support trolley.

The pushing device for supporting is a supporting oil cylinder, the bottom of which is fixed on the vehicle frame and the top of the piston rod of the oil cylinder is installed at the bottom of the wheel support mechanism.

The wheel support mechanism includes a rubber wheel and a support wheel frame for the rubber wheel; the number of the plurality of walking mechanisms is four, and the four walking structures are respectively installed at the four corners of the bottom of the frame The four walking cars.

The number of the plurality of wheel support mechanisms 5 is three and/or five, and the five wheel support mechanisms 5 are respectively arranged at 9 o'clock, 11 o'clock, and 12 o'clock inside the annular concrete segment 15. 1 o'clock, 1 o'clock and 3 o'clock five directions, wherein the wheel support mechanism 5 arranged at the 12 o'clock position is the central axis wheel support mechanism 5-1, and the wheel support mechanism 5-1 arranged at the 9 o'clock and 3 o'clock positions The two wheel-type support mechanisms 5 are waistline wheel-type support mechanisms 5-2, and the two wheel-type support mechanisms 5 arranged at the 11 o'clock and 1 o'clock positions are 77° included angle wheel-type support mechanisms 5-3; The three wheel support mechanisms 5 are respectively arranged at the three positions of 9 o'clock, 12 o'clock and 3 o'clock inside the annular concrete segment 15, and the wheel support mechanism 5 arranged at the 12 o'clock position is the center The axis wheel support mechanism 5-1, the two wheel support mechanisms 5 arranged at the 9 o'clock and 3 o'clock positions are waistline wheel support mechanisms 5-2.

It also includes a plurality of pushing devices for pushing forward the side parts installed symmetrically on the left and right sides of the front part of the one or more groups of wheeled supporting trolleys with the same structure.

Compared with the prior art, the present invention has the following advantages:

1. Simple and reasonable structure, convenient installation and layout, and easy operation.

2. The design is novel and reasonable, the use effect is good and the practical value is high. Aiming at the construction characteristics of long-distance and small-space shield overlapping tunnels, a new type of movable wheeled trolley support system has been developed for the support system in the advanced tunnel. , the support system is mainly composed of 4 sets of wheeled support trolleys and the above-mentioned wheeled support trolleys can travel on the rails, each trolley is provided with a support mechanism at longitudinal intervals, and the space between adjacent two groups of wheeled support trolleys Use connecting bars to connect to form a whole. Under the thrust of external force, the purpose of moving forward in the longitudinal direction of four sets of wheeled supporting trolleys can be realized without unloading force. In actual use, the invention can meet all the requirements of the support system used in the construction process of long-distance and small-space overlapping shield tunnels, and it is very convenient to move forward during construction and realize continuous and uninterrupted support.

3. It has a wide range of applications and can be effectively applied to parallel tunnels and tunnel supports with certain curved sections. Since the present invention uses hydraulic cylinders as the vehicle group push and support push, due to the characteristics of the oil cylinder, the present invention can meet certain requirements. The tangent requirements of the length curve section can also meet the support requirements for tunnels with a certain curved shape.

4. The operation mode is flexible, and the whole vehicle propulsion method or the single-vehicle group movement method can be adopted. During the actual construction process, the entire vehicle assembled through the connecting bar can be moved forward as a whole; In the group movement mode, the time used for each cycle of the wheeled support trolley to move forward is no more than 20 minutes.

5. High safety and reliability. During the support process of the wheeled support trolley, the changes in the readings of the hydraulic gauge and the working status of each jack should be carefully monitored. If a certain oil cylinder has oil leakage or other unloading conditions, the oil inlet and outlet of the oil cylinder should be closed immediately. Road valve, immediately call the shield machine on the left line to stop the tunneling, and the tunneling can only be resumed after the fault is eliminated.

To sum up, the present invention has reasonable structure, convenient installation and layout, easy operation, good use effect and high practical value, and can realize the purpose of continuous and uninterrupted support for the structure in the tunnel ahead, and at the same time of continuous and uninterrupted support, The invention can completely meet all the requirements of the support system of the overlapping shield tunnel with long distance and small clear distance, overcome the difficult problems of the cross support system such as very difficult installation and reverse operation, and greatly improve the support efficiency.

The technical solutions of the present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

Description of drawings

Fig. 1 is a reference diagram of the use state of the present invention.

FIG. 2 is a top view of FIG. 1 .

Fig. 3 is a schematic diagram of the arrangement position of the wheel support mechanism of the present invention.

Fig. 4 is a schematic diagram of the oil circuit connection of the jacking cylinder hydraulic station of the present invention.

Fig. 5 is a schematic diagram of the oil circuit connection of the support cylinder hydraulic station of the present invention.

Explanation of reference signs:

1-Trolley; 2-Under frame; 3-Column;

4-Upper beam frame; 5-Wheel support mechanism; 5-1-Central axis wheel support

Support mechanism;

5-2-Waist line wheel support machine 5-3-77°angle wheel support 5-4-Rubber wheels;

institution; institution;

5-5-wheel frame; 6-longitudinal beam; 7-top frame;

8-pillar brace; 9-inner splayed brace; 10-wheel frame screw;

11-support cylinder hydraulic station; 11-1-oil dipstick one; 11-2-oil filter one;

11-3-motor one; 11-4-gear pump; 11-5-pressure gauge one;

11-6-Relief valve one; 11-7-Pressure gauge two; 11-8-Hydraulic lock;

11-9-high pressure ball valve one; 11-10-solenoid valve one; 12-jack cylinder hydraulic station;

12-1-oil dipstick two; 12-2-oil filter two; 12-3-motor two;

12-4-piston pump; 12-5-pressure gauge three; 12-6-relief valve two;

12-7-Solenoid valve two; 13-Rail lock device; 14-Rail;

15-concrete segment; 16-triangle bracket; 17-beam;

18-Rear push cylinder seat beam; 19-Rear push cylinder; 20-Train group push cylinder;

21-Wheeled support trolley; 21-1-The first set of wheeled supports 21-2-The second set of wheeled supports

trolley; trolley;

21-3-The third group of wheel support 21-4-The fourth group of wheel support 22-Side push cylinder;

trolley; trolley;

23-support cylinder; 23-1-central axis support cylinder; 23-2-waistline support cylinder;

23-3-77° angle support oil

cylinder.

Detailed ways

As shown in Fig. 1, Fig. 2, Fig. 3, Fig. 4 and Fig. 5, the present invention includes one or more groups of wheeled support platforms with the same structure that can move back and forth on the laid steel rail 14 in the shield tunnel that has been constructed. Cart 21, two adjacent groups of wheeled supporting trolleys 21 are connected by connecting bars, and the multiple groups of wheeled supporting trolleys 21 are assembled into one body by connecting bars. The wheeled support trolley 21 includes a vehicle frame, a plurality of running gears that are installed at the bottom of the vehicle frame and can move back and forth on the steel rail 14, and are evenly arranged horizontally on the vehicle frame and can simultaneously complete the construction of the shield. The multi-channel support mechanism for stably supporting the shield tunnel. The support mechanism includes a plurality of wheel support mechanisms 5 symmetrically arranged on the vehicle frame with the vertical central axis of the completed shield tunnel as the center line and corresponding A plurality of support pushing devices arranged between the plurality of wheeled support mechanisms 5 and the vehicle frame, the plurality of wheeled support mechanisms 5 are arranged in the inside of the shield tunnel that has been constructed along the circumferential direction and are all in line with the constructed tunnel. The annular concrete segment 15 paved on the inner wall of the shield tunnel is completed to be in contact with each other.

In this embodiment, the number of the plurality of traveling mechanisms is four, and the four traveling structures are four traveling trolleys 1 respectively installed at the four top corners of the bottom of the vehicle frame. The vehicle frame includes a horizontally rectangular bottom frame 2, a plurality of vertical columns 3 evenly arranged on the bottom frame 2, and a top frame installed directly above the bottom frame 2 through the plurality of vertical columns 3 . The jacking frame includes an upper beam frame 4 erected on the plurality of vertical columns 3 and a plurality of longitudinal beams 6 installed on the upper beam frame 4 . The column 3 is reinforced and supported by a plurality of column braces 8 installed on the bottom frame 2, and the column braces 8 are longitudinally arranged; at the same time, the column 3 and the longitudinal beam 6 are reinforced and supported by an inner splayed brace 9 And the inner splayed support 9 is arranged horizontally.

The number of the plurality of wheel support mechanisms 5 is three and/or five, and the five wheel support mechanisms 5 are respectively arranged at 9 o'clock, 11 o'clock, and 12 o'clock inside the annular concrete segment 15. 1 o'clock, 1 o'clock and 3 o'clock five directions, wherein the wheel support mechanism 5 arranged at the 12 o'clock position is the central axis wheel support mechanism 5-1, and the wheel support mechanism 5-1 arranged at the 9 o'clock and 3 o'clock positions The two wheel support mechanisms 5 are waistline wheel support mechanisms 5-2, and the two wheel support mechanisms 5 arranged at the 11 o'clock and 1 o'clock positions are 77° angle wheel support mechanisms 5-3, The angle between the two wheel support mechanisms 5 arranged at 11 o'clock and 1 o'clock is 77°; the three wheel support mechanisms 5 are respectively arranged at 9 o'clock inside the circular concrete segment , 12 o'clock and 3 o'clock three positions, wherein the wheel support mechanism 5 arranged at the 12 o'clock position is the central axis wheel support mechanism 5-1, and the two positions arranged at the 9 o'clock and 3 o'clock positions The wheel support mechanism 5 is a waistline wheel support mechanism 5-2. The wheel support mechanism 5 includes a rubber wheel 5-4 and a support wheel frame 5-5 for installing the rubber wheel 5-4. The wheel frame 5-5 is reinforced and supported by the wheel frame lead screw 10 arranged on the top frame.

In this embodiment, the wheel supports 5-5 of the central axis wheel support mechanism 5-1 and the waistline wheel support mechanism 5-2 are double-wheel supports, and two rubber wheels are installed on the front and back of the double-wheel supports. 5-4, the 77° included angle wheel support mechanism 5-3 is a single wheel support and a rubber wheel 5-4 is installed on the single wheel support.

In this embodiment, the supporting pushing device is a supporting cylinder 23 , the bottom of which is fixed on the vehicle frame and the top of the piston rod of the cylinder is installed on the bottom of the wheel support mechanism 5 . In this embodiment, the top of the cylinder piston rod of the support cylinder 23 is connected with the bottom of the wheel support mechanism 5 (specifically, the bottom of the support wheel frame 5-5) by threaded connection. Correspondingly, the support cylinders 23 for pushing and supporting the central axis wheel support mechanism 5-1, the waistline wheel support mechanism 5-2 and the 77° included angle wheel support mechanism 5-3 are respectively the central axis support cylinders 23 -1. Waist line support oil cylinder 23-2 and 77 ° angle support oil cylinder 23-3.

The number of the wheeled supporting trolleys 21 is four groups, and the four groups of wheeled supporting trolleys 21 are respectively the first group of wheeled supporting trolleys 21-1, the second group of wheeled supporting trolleys 21-2, the second group of wheeled supporting trolleys Three groups of wheeled supporting trolleys 21-3 and the fourth group of wheeled supporting trolleys 21-4.

At the same time, the present invention also includes a position locking and rear propelling device installed at the rear of one or more groups of wheeled supporting trolleys 21 with the same structure. The position locking and rear propulsion device includes a rear propulsion frame, a plurality of rail locks 13 installed at the bottom of the rear propulsion frame, and symmetrically arranged on the rear propulsion frame and the front set of wheels. A plurality of rear portions between the type support trolleys 21 are propelled forward with a push device, and the installation position of the rail locking device 13 is corresponding to the layout position of the steel rail 14. In this embodiment, the rear propelling frame is a triangle bracket 16 and it includes a horizontal bottom frame and a top frame 7 installed on the bottom frame. The number of the plurality of rail locks 13 is two, and the two rail locks 13 are respectively installed at the front and rear of the rear propelling vehicle frame.

The number of the plurality of pushing devices for pushing forward at the rear is two, and the two pushing devices for pushing forward at the rear are symmetrically arranged on the lower part of the rear pushing frame and the front group. Between the wheeled supporting trolley 21 bottoms. And, the pushing device for pushing the rear portion forward is a rear pushing oil cylinder 19, and the front portion of the rear pushing frame is provided with a rear pushing oil cylinder seat beam 18 for fixing the rear pushing oil cylinder 19, and the front pushing oil cylinder 19 is fixed. One group of wheeled support trolley 21 rear parts is provided with the crossbeam 17 that the oil cylinder piston rod top of pushing oil cylinder 19 is installed for back. The bottom of the rear push cylinder 19 is fixed on the rear push cylinder seat beam 18 and the top of its cylinder piston rod is installed on the crossbeam 17, and the top of the cylinder piston rod of the rear push cylinder seat beam 18 and the crossbeam 17 are threaded. way to connect.

The connecting bar is a detachable connecting bar. A plurality of pushing devices for forward propulsion are respectively installed between 21 adjacent two groups of wheeled support platforms, and the plurality of pushing devices for forward propulsion of the vehicle group are symmetrically arranged on the adjacent two groups of wheeled support platforms. Between cars 21.

In this embodiment, the number of the pushing devices for the forward propulsion of the multiple vehicle groups is four, and the four pushing devices for the forward propulsion of the vehicle groups include two ones arranged symmetrically on the left and right in two adjacent groups. The upper car group between the upper parts of the wheeled support trolleys 21 is pushed forward with a push device and two lower car groups, one left and one right symmetrically arranged between the lower parts of two adjacent groups of wheeled support trolleys 21, are pushed forward. Use the jacking device. And, the pushing device for pushing forward the vehicle group is the vehicle group pushing oil cylinder 20, and the bottom of the vehicle group pushing oil cylinder 20 is fixed on the vehicle frame of the previous group of wheeled supporting trolley 21 and its oil cylinder piston rod The top is installed on the vehicle frame of the rear group of wheeled supporting trolleys 21. The top of the cylinder piston rod of the pushing cylinder 20 of the vehicle group is connected with the vehicle frame of the rear group of wheeled supporting trolley 21 in a threaded connection.

In addition, the present invention also includes a plurality of pushing devices for pushing forward of the side parts installed symmetrically on the left and right sides of the front part of the one or more groups of wheeled supporting trolleys 21 with the same structure. The number of the plurality of pushing devices for pushing forward the side parts is two, and the two pushing devices for pushing forward the side parts are symmetrically arranged on the one or more sets of wheeled supports with the same structure. The left and right sides of trolley 21 front portion. The pushing device for pushing forward the side part is a side pushing oil cylinder 22, and the bottom of the side pushing oil cylinder 22 is installed on the vehicle frame at the front of the wheeled support trolley 21 with the same structure in one or more groups. And the top of its oil cylinder piston rod is clamped on the inner wall of the concrete segment 15 left and right sides. In this embodiment, the side push cylinders 22 are arranged on the left and right sides of the front part of the front group of the four groups of wheeled support trolleys 21 (ie the fourth group of wheeled support trolleys 21-4). The inner walls of the left and right sides of the concrete segment 15 are respectively provided with snapping grooves for snapping the cylinder piston rods of the side push cylinders 22 .

During the actual installation and layout, the rear push cylinder 19 and the vehicle group push cylinder 20 are connected to the push cylinder hydraulic station 12 through hydraulic pipelines, and the support cylinder 23 is connected to the support cylinder hydraulic station 11 through hydraulic pipelines. The push cylinder hydraulic station 12 and the support cylinder hydraulic station 11 are all installed on the frame of the wheeled support trolley 21, and the system pressures of the push cylinder hydraulic station 12 and the support cylinder hydraulic station 11 can be adjusted. In this embodiment, the push cylinder hydraulic station 12 is installed on the bottom frame of the first group of wheeled supporting trolleys 21-1, and the supporting cylinder hydraulic station 11 is installed on the third group of wheeled supporting trolleys 21-3 on the bottom frame. Specifically: a group of two rear push cylinders 19, a group of two side push cylinders 22, and between the first group of wheeled support trolleys 21-1 and the second group of wheeled support trolleys 21-2, Between the second group of wheeled supporting trolley 21-2 and the third group of wheeled supporting trolley 21-3 and between the third group of wheeled supporting trolley 21-3 and the fourth group of wheeled supporting trolley 21-4 Three groups of vehicle groups push cylinders 20 (a total of 16 push cylinders) are connected with the hydraulic station 12 of the push cylinders through hydraulic pipelines. The jacking cylinder hydraulic station 12 includes a hydraulic source 2, a hydraulic output pipeline 2 connected to the hydraulic source 2, and an oil filter 12-2 respectively arranged on the hydraulic output pipeline 2, powered by a motor 2 12 -3 to drive the plunger pump 12-4, the pressure gauge 3 12-5, the hydraulic oil sent from the jacking cylinder hydraulic station 12 is sent to the above-mentioned five groups of 16 jacking oil cylinders respectively through the hydraulic pipeline and the above-mentioned five groups of pushing cylinders Solenoid valve 2 12-7 is installed on the hydraulic pipeline between oil cylinder and push cylinder hydraulic station 12, and overflow valve 2 12-6 is also installed on the hydraulic pipeline connected with solenoid valve 2 12-7 oil delivery port In addition, an oil dipstick 2 12-1 for visually indicating the internal hydraulic oil level is also installed on the outer shell of the push cylinder hydraulic station 12.

Among the four groups of wheeled supporting trolleys 21, the number of supporting mechanisms installed on each group of wheeled supporting trolleys 21 is four, and among the four supporting mechanisms, the middle two supporting mechanisms include five wheeled supporting mechanisms. Mechanism 5, the left and right two support mechanisms include three wheel support mechanisms 5. The first group of wheeled supporting trolleys 21-1, the second group of wheeled supporting trolleys 21-2, the third group of wheeled supporting trolleys 21-3 and the fourth group of wheeled supporting trolleys 21-4 are installed in total There are 4 support mechanisms, including 8 support mechanisms including three wheel support mechanisms 5 and five wheel support mechanisms 5 . The 64 support cylinders 23 of the above 16 support mechanisms are all connected to the support cylinder hydraulic station 11 through hydraulic pipelines. The support cylinder hydraulic station 11 includes a hydraulic source 1, a hydraulic output pipeline connected to the hydraulic source 1, and an oil filter 11-2 respectively arranged on the hydraulic output pipeline 1, and a motor 11-1 3 Drive the gear pump 11-4, the pressure gauge 11-5, and the hydraulic oil sent from the support cylinder hydraulic station 11 is sent to the above-mentioned 64 support cylinders 23 respectively through the hydraulic pipeline, and the above-mentioned 64 support cylinders 23 and the support cylinder Solenoid valve 11-10 is installed on the hydraulic pipelines between 11 hydraulic stations, and overflow valve 11-6 is also installed on the hydraulic pipeline connected with the solenoid valve 11-10 oil delivery port. An oil dipstick 11-1 for visually indicating the internal hydraulic oil level is also installed on the outer casing of the hydraulic station 11, and a pressure gauge 11-1 is installed on the hydraulic pipeline connected between the solenoid valve 11-10 and the support cylinder 23. 7 and hydraulic lock 11-8, and the hydraulic pipeline connected between the support cylinder hydraulic station 11 and the central axis support cylinder 23-1 is also equipped with a high-pressure ball valve-11-9.

In the actual use process, the present invention can not only adopt the whole vehicle propulsion mode to move forward, but also can adopt the single vehicle group to move forward. The four groups of wheeled supporting trolleys 21 can be assembled into one body through the connecting bars, and can realize the forward movement of the whole vehicle without unloading force under the promotion of external force; Forward movement, the specific expression is as follows:

a. Overall pushing movement: two adjacent wheeled supporting trolleys 21 are connected by a connecting bar, and the two rear pushing cylinders 19 that push the first group of wheeled supporting trolleys 21-1 are used as the main pushers Oil cylinder, two side pushing oil cylinders 22 that are arranged on the fourth group of wheeled supporting trolley 21-4 are used as auxiliary pushing oil cylinders, and the whole car group is not unloaded and pushed forward to move forward.

b. Sub-car group push movement: Remove the connecting bars between two adjacent wheeled support trolleys 21, and first use a group of vehicle group push cylinders fixed on the third group of wheeled support trolleys 21-3 20 promote the fourth group of wheeled support trolleys 21-4 to move forward, and then push the third group of wheeled trolleys 20 with a group of vehicle groups that are fixed on the second group of wheeled support trolleys 21-2. The support trolley 21-3 moves forward, and then correspondingly adopts a group of vehicle group push cylinders 20 fixed on the first group of wheeled support trolleys 21-1 to push the second group of wheeled support trolleys 21-2 to Move forward, and then adopt two rear push cylinders 19 to promote the first group of wheeled supporting trolleys 21-1 to move forward.

After the four groups of wheeled supporting trolleys 21 are moved into place, the position of the whole vehicle group is locked by position locking and the rail locker 13 in the rear propulsion device.

The above are only preferred embodiments of the present invention, and do not limit the present invention in any way. All simple modifications, changes and equivalent structural changes made to the above embodiments according to the technical essence of the present invention still belong to the technical aspects of the present invention. within the scope of protection of the scheme.

Claims (10)

1. A movable wheeled trolley support system for overlapping shield tunnels with small net distances, characterized in that: it includes a group of rails (14) that can move back and forth on the laid steel rails (14) in the shield tunnels that have been constructed. Or multiple groups of wheeled supporting trolleys (21) with the same structure, in multiple groups of wheeled supporting trolleys (21), adjacent two groups of wheeled supporting trolleys (21) are connected by connecting bars and the multiple groups of wheeled supporting trolleys (21) are connected by connecting bars. The wheeled support trolley (21) is assembled as a whole through connecting bars; the wheeled support trolley (21) includes a vehicle frame, a plurality of traveling mechanisms that are installed at the bottom of the vehicle frame and can move back and forth on the rails (14) and a multi-channel support mechanism that is evenly arranged on the frame in the transverse direction and can simultaneously provide stable support for the completed shield tunnel. The support mechanism includes a centerline symmetrical The plurality of wheel support mechanisms (5) arranged on the vehicle frame and the plurality of support pushing devices respectively arranged between the plurality of wheel support mechanisms (5) and the vehicle frame, the plurality of The wheel support mechanism (5) is arranged inside the completed shield tunnel along the circumferential direction and is in contact with the circular concrete segment (15) paved on the inner wall of the completed shield tunnel. 2. According to claim 1, the movable wheeled trolley support system for long-distance and small-distance overlapping shield tunnels is characterized in that: it also includes wheeled supports installed on said one or more groups of identical structures. Position locking and rear propulsion device at the rear of the trolley (21). 3. According to claim 2, the movable wheeled trolley support system for long-distance and small-distance overlapping shield tunneling is characterized in that: the position locking and rear propulsion device includes a rear propulsion frame, an installation A plurality of rail locks (13) at the bottom of the rear propelling frame and a plurality of rear parts symmetrically arranged between the rear propelling frame and the front group of wheeled support trolleys (21) are forward The thrusting device is used for propulsion, and the installation position of the rail lock (13) corresponds to the laying position of the steel rail (14). 4. According to claim 3, the movable wheeled trolley support system for long-distance and small-distance overlapping shield tunneling is characterized in that: the pushing device for pushing the rear part forward is a rear pushing oil cylinder ( 19), the front part of the rear propulsion frame is provided with a rear push cylinder seat beam (18) for fixing the rear push cylinder (19), and the rear part of the front group of wheeled support trolleys (21) is provided with There is a crossbeam (17) installed on the top of the oil cylinder piston rod for the back push cylinder (19). 5. According to claim 1, 2 or 3, the movable wheeled trolley support system for long-distance and small-distance overlapping shield tunnels is characterized in that: the connecting bars are detachable connecting bars; Between two groups of wheeled supporting trolleys (21), a plurality of pushing devices for forward propulsion are installed respectively, and a plurality of said pushing devices for advancing forward are symmetrically arranged on adjacent two groups of wheeled supporting trolleys ( 21) Between. 6. The movable wheeled trolley support system for long-distance and small-distance overlapping shield tunneling according to claim 5, characterized in that: the pushing device for pushing forward is a vehicle group pushing cylinder (20 ), the bottom of the vehicle group push cylinder (20) is fixed on the vehicle frame of the previous group of wheeled support trolleys (21) and the top of its oil cylinder piston rod is installed on the rear group of wheeled support trolleys (21) on the frame. 7. According to claim 1, 2 or 3, the movable wheeled trolley support system for long-distance and small-distance overlapping shield tunneling is characterized in that: the support pusher is a support cylinder (23) , the bottom of the support cylinder (23) is fixed on the vehicle frame and the top of the piston rod of the cylinder is installed on the bottom of the wheel support mechanism (5). 8. According to claim 1, 2 or 3, the movable wheeled trolley support system for long-distance and small-space overlapped shield tunnels is characterized in that: the wheeled support mechanism (5) includes rubber wheels ( 5-4) and the supporting wheel frame (5-5) for rubber wheels (5-4); the number of the plurality of running gears is four, and the four running structures are installed on the bottom of the vehicle frame respectively Four walking dollies (1) at the four corners. 9. According to claim 1, 2 or 3, the movable wheeled trolley support system for long-distance and small-distance overlapping shield tunneling, characterized in that: the number of the plurality of wheeled support mechanisms (5) There are three or five, and the five wheel support mechanisms (5) are respectively arranged at 9 o'clock, 11 o'clock, 12 o'clock, 1 o'clock and 3 o'clock inside the circular concrete segment (15) There are five directions of the clock, wherein the wheel support mechanism (5) arranged at the 12 o'clock position is the central axis wheel support mechanism (5-1), and the two wheel supports arranged at the 9 o'clock and 3 o'clock positions The mechanism (5) is a waistline wheel support mechanism (5-2), and the two wheel support mechanisms (5) arranged at 11 o'clock and 1 o'clock are 77° angle wheel support mechanisms (5- 3); the three wheeled support mechanisms (5) are respectively arranged at 9 o'clock, 12 o'clock and 3 o'clock inside the circular concrete segment (15), and the one arranged at 12 o'clock The wheel support mechanism (5) is a central axis wheel support mechanism (5-1), and the two wheel support mechanisms (5) arranged at the 9 o'clock and 3 o'clock positions are waistline wheel support mechanisms (5-1). -2). 10. According to claim 1, 2 or 3, the movable wheeled trolley support system for long-distance and small-distance overlapping shield tunnels is characterized in that: it also includes left-right symmetrical installation on the one or more groups A plurality of side parts on the left and right sides of the front part of the wheeled support trolley (21) with the same structure pushes forward with a push device.

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