CN214464171U - Synchronous operation system of tunnel boring machine - Google Patents
Synchronous operation system of tunnel boring machine Download PDFInfo
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- CN214464171U CN214464171U CN202120647178.0U CN202120647178U CN214464171U CN 214464171 U CN214464171 U CN 214464171U CN 202120647178 U CN202120647178 U CN 202120647178U CN 214464171 U CN214464171 U CN 214464171U
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Abstract
The utility model discloses a tunnel boring machine's synchronous operation system, tunnel boring machine includes the girder, set up on the girder and can follow girder length direction gliding saddle around, set up on the girder and along girder length direction gliding jumbolter around, locate the saddle left and right sides and can be relative the saddle concertina movement prop boots, set up the thrust cylinder between propping boots and the girder, still be provided with synchronous operation system between jumbolter and the girder. The utility model discloses a synchronous operation system of tunnel boring machine, through add synchronous operation system between girder and roofbolter, at the tunneling of tunnel boring machine and shut down the in-process, roofbolter all can drill the operation, has improved work efficiency, simultaneously, still sets up hydraulic pressure lock and differential valve between the pole chamber and the rodless chamber of thrust cylinder, can be to the release of the relevant hydraulic pressure oil circuit of thrust cylinder, ensured the security of oil circuit.
Description
Technical Field
The utility model relates to a synchronous operation system of tunnel boring machine.
Background
The technology of the tunnel boring machine is mature day by day, but the tunnel boring machine has certain limitations in the practical use process and needs to be improved continuously in the design and manufacturing stage. On one hand, the tunnel boring machine is provided with an anchor rod drilling machine system, a hole can be drilled in an excavated tunnel for tunnel support, and due to the influence of geological conditions and construction efficiency, the drilling machine needs to be ensured to carry out drilling operation in the states of boring and stopping, but in the prior art, the drilling machine advances along with a main beam during boring, so that the drilling machine cannot be positioned and drilled, and adverse influence is caused to construction; on the other hand, the thrust cylinder and the supporting shoe are connected by a mechanical structure, so that the pressure building of a hydraulic system and the relative movement of a structural member can be caused in the actual mechanism movement, the potential safety hazard of the hydraulic system is caused, and the adverse effect on the site construction is caused.
Disclosure of Invention
The utility model aims at providing a tunnel boring machine synchronous operation system that can guarantee that the rig can both beat the brill under tunnelling and the shut down state.
In order to achieve the above purpose, the utility model adopts the technical scheme that:
a synchronous operation system of a tunnel boring machine comprises a main beam, a saddle which is arranged on the main beam and can slide back and forth along the length direction of the main beam, a jumbolter which is arranged on the main beam and can slide back and forth along the length direction of the main beam, supporting shoes which are arranged on the left side and the right side of the saddle and can move relative to the saddle in a telescopic way, and a propelling cylinder which is arranged between the supporting shoes and the main beam, wherein the propelling cylinder comprises a propelling cylinder body and a propelling cylinder telescopic rod which can extend and retract relative to the propelling cylinder body, one of the propelling cylinder body and the propelling cylinder telescopic rod is fixedly connected with the supporting shoes, and the other is fixedly connected with the main beam,
the roofbolter with still be provided with synchronous operation system between the girder, synchronous operation system includes:
the drilling machine compensation oil cylinder comprises a compensation oil cylinder body and a compensation oil cylinder telescopic rod capable of stretching relative to the compensation oil cylinder body, one of the compensation oil cylinder body and the compensation oil cylinder telescopic rod is fixedly connected with the main beam, the other one of the compensation oil cylinder body and the compensation oil cylinder telescopic rod is fixedly connected with the saddle, and the compensation oil cylinder telescopic rod stretches along the length direction of the main beam;
the drilling machine sliding oil cylinder comprises a sliding oil cylinder body and a sliding oil cylinder telescopic rod capable of extending relative to the sliding oil cylinder body, one of the sliding oil cylinder body and the sliding oil cylinder telescopic rod is fixedly connected with the main beam, the other one of the sliding oil cylinder body and the sliding oil cylinder telescopic rod is fixedly connected with the anchor rod drilling machine, the sliding oil cylinder telescopic rod extends and retracts along the length direction of the main beam,
a first oil way is connected between a rod cavity and a rodless cavity of the drilling machine compensation oil cylinder, a second oil way is connected between the drilling machine sliding oil cylinder and the drilling machine compensation oil cylinder, the second oil way comprises a first branch and a second branch, the first branch is connected between the rod cavity of the drilling machine compensation oil cylinder and the rod cavity of the drilling machine sliding oil cylinder, and the second branch is connected between the rodless cavity of the drilling machine compensation oil cylinder and the rodless cavity of the drilling machine sliding oil cylinder; or the first branch is connected between the rod cavity of the compensation oil cylinder of the drilling machine and the rodless cavity of the sliding oil cylinder of the drilling machine, and the second branch is connected between the rodless cavity of the compensation oil cylinder of the drilling machine and the rod cavity of the sliding oil cylinder of the drilling machine;
and the follow-up valve group comprises a first follow-up valve group capable of controlling the on-off of the first oil way and a second follow-up valve group capable of controlling the on-off of the second oil way.
Preferably, the first follower valve group comprises a first follower valve and a second follower valve which are mutually connected, the first follower valve and the second follower valve are respectively provided with a one-way valve, an oil inlet of the one-way valve in the first follower valve is communicated with an oil inlet of the one-way valve in the second follower valve, an oil outlet of the one-way valve in the first follower valve is communicated with a rod cavity of the drilling machine compensation oil cylinder, and an oil outlet of the one-way valve in the second follower valve is communicated with a rodless cavity of the drilling machine compensation oil cylinder.
Further, when the first follow-up valve group is electrified, a rod cavity and a rodless cavity of the compensation oil cylinder of the drilling machine are communicated; and when the first follow-up valve group is powered off, the rod cavity and the rodless cavity of the compensation oil cylinder of the drilling machine are disconnected.
Preferably, a first overflow valve is further connected between the first slave valve and the second slave valve.
Preferably, a pressure sensor is arranged between the rod cavity and the rodless cavity of the sliding oil cylinder of the drilling machine.
Preferably, the rod cavity/rodless cavity of the drilling machine sliding oil cylinder is also connected with a second overflow valve.
Preferably, the second follow-up valve group comprises a third follow-up valve and a fourth follow-up valve, the third follow-up valve and the fourth follow-up valve are respectively provided with two groups of one-way valves, liquid inlets of the two groups of one-way valves are communicated with each other, the third follow-up valve is connected in the first branch, an oil outlet of one group of one-way valves in the third follow-up valve is communicated with the rod cavity of the compensation oil cylinder of the drilling machine, and an oil outlet of the other group of one-way valves is communicated with the rod cavity of the sliding oil cylinder of the drilling machine; the oil outlets of one group of one-way valves in the fourth slave valve are communicated with the rodless cavity of the compensation oil cylinder of the drilling machine, and the oil outlets of the other group of one-way valves are communicated with the rodless cavity of the sliding oil cylinder of the drilling machine.
Further, when the second follow-up valve group is electrified, the first branch circuit and the second branch circuit are communicated; when the second follow-up valve group is powered off, the first branch circuit and the second branch circuit are both disconnected.
Further preferably, the synchronous operation system further comprises a third oil path, the third oil path is connected between the rod chamber and the rodless chamber of the thrust cylinder, and an oil return tank, a hydraulic lock for controlling the third oil path to be switched on and off, and a differential valve for controlling the hydraulic lock to be switched on and off are further arranged in the third oil path.
Further preferably, when the differential valve is powered on, the hydraulic lock is opened, and the rod cavity, the rodless cavity and the oil return tank of the propulsion oil cylinder are communicated with each other; when the differential valve is powered off, the rod cavity and the rodless cavity of the propulsion oil cylinder are disconnected, and the rod cavity and the rodless cavity of the propulsion oil cylinder are both disconnected with the oil return tank.
Because of above-mentioned technical scheme's application, compared with the prior art, the utility model have the following advantage: the utility model discloses a synchronous operation system of tunnel boring machine through set up synchronous operation system between girder and roofbolter, at the tunneling of tunnel boring machine and shut down the in-process, the roofbolter homoenergetic is beaten the drilling operation, has improved work efficiency.
Drawings
Fig. 1 is a schematic structural view of the tunnel boring machine of the present invention;
fig. 2 is a schematic view of a hydraulic system of a synchronous operating system of the tunnel boring machine of the present invention;
fig. 3 is a schematic view of hydraulic control of a third oil path in the synchronous operation system of the tunnel boring machine of the present invention;
fig. 4 is a logic control table of the servo valve set and the differential valve in the synchronous operation system of the tunnel boring machine of the present invention;
wherein: 1. a main beam;
2. a saddle;
3. a jumbolter;
4. supporting the boot;
5. a propulsion cylinder; 51. a propulsion cylinder body; 52. pushing an oil cylinder telescopic rod;
61. a compensation oil cylinder of the drilling machine; 611. a compensating oil cylinder body; 612. a telescopic rod of the compensation oil cylinder; 62. a drilling machine sliding oil cylinder; 621. a sliding cylinder body; 622. sliding the telescopic rod of the oil cylinder; 63. a first oil passage; 64. a second oil passage; 641. a first branch; 642. a second branch circuit; 65. a servo valve group; 651. a first follow-up valve group; 6511. a first spool valve; 6512. a second spool valve; 652. a second follow-up valve group; 6521. a third spool valve; 6522. a fourth spool valve; 66. a first overflow valve; 67. a pressure sensor; 68. a second overflow valve; 69. a third oil passage; 691. hydraulic locking; 692. a differential valve; 693. a pressure relief port.
Detailed Description
The technical solution of the present invention will be further explained with reference to the accompanying drawings and specific embodiments.
Referring to the synchronous operation system of the tunnel boring machine shown in the attached figure 1, the tunnel boring machine comprises a main beam 1, a saddle frame 2 which is arranged on the main beam 1 and can slide back and forth along the length direction of the main beam 1, a jumbolter 3 which is arranged on the main beam 1 and can slide back and forth along the length direction of the main beam 1, supporting shoes 4 which are arranged on the left and right sides of the saddle frame 2 and can move telescopically relative to the saddle frame 2, and a propulsion cylinder 5 which is arranged between the supporting shoes 4 and the main beam 1, wherein the propulsion cylinder 5 comprises a propulsion cylinder body 51 and a propulsion cylinder telescopic rod 52 which can stretch out and draw back relative to the propulsion cylinder body 51, one of the propulsion cylinder body 51 and the propulsion cylinder 5 telescopic rod is fixedly connected with the supporting shoes 4, and the other is fixedly connected with the main beam 1.
Referring to fig. 1 and 2, a synchronous operating system is also provided between the jumbolter 3 and the main beam 1, and comprises a rig compensation cylinder 61, a rig slide cylinder 62 and a follower valve bank 65.
Specifically, the compensation oil cylinder 61 of the drilling machine comprises a compensation oil cylinder body 611 and a compensation oil cylinder telescopic rod 612 which can stretch and contract relative to the compensation oil cylinder body 611, one of the compensation oil cylinder body 611 and the compensation oil cylinder telescopic rod 612 is fixedly connected with the main beam 1, the other is fixedly connected with the saddle 2, and the compensation oil cylinder telescopic rod 612 stretches and contracts along the length direction of the main beam 1; the drilling machine sliding oil cylinder 62 comprises a sliding oil cylinder body 621 and a sliding oil cylinder telescopic rod 622 capable of stretching relative to the sliding oil cylinder body 621, one of the sliding oil cylinder body 621 and the sliding oil cylinder telescopic rod 622 is fixedly connected with the main beam 1, the other one of the sliding oil cylinder body 621 and the sliding oil cylinder telescopic rod 622 is fixedly connected with the anchor drilling machine 3, and the sliding oil cylinder telescopic rod 622 stretches along the length direction of the main beam 1.
Referring to fig. 2, a first oil path 63 is connected between the rod chamber and the rodless chamber of the drilling machine compensation cylinder 61, a second oil path 64 is connected between the drilling machine sliding cylinder 62 and the drilling machine compensation cylinder 61, and the second oil path 64 comprises a first branch 641 and a second branch 642. In this embodiment, the first branch 641 is connected between the rod cavity of the rig compensation cylinder 61 and the rod cavity of the rig sliding cylinder 62, and the second branch 642 is connected between the rodless cavity of the rig compensation cylinder 61 and the rodless cavity of the rig sliding cylinder 62; in other embodiments, the first branch 641 is connected between the rodless cavity of the rig makeup cylinder 61 and the rodless cavity of the rig slip cylinder 62, and the second branch 642 is connected between the rodless cavity of the rig makeup cylinder 61 and the rodless cavity of the rig slip cylinder 62.
The servo valve group 65 includes a first servo valve group 651 capable of controlling the opening and closing of the first oil passage 63, and a second servo valve group 652 capable of controlling the opening and closing of the second oil passage 64. Specifically, the first follower valve group 651 comprises a first follower valve 6511 and a second follower valve 6512 which are connected with each other, the first follower valve 6511 and the second follower valve 6512 are respectively provided with a one-way valve, an oil inlet of the one-way valve in the first follower valve 6511 is communicated with an oil inlet of the one-way valve in the second follower valve 6512, an oil outlet of the one-way valve in the first follower valve 6511 is communicated with a rod cavity of the drilling machine compensation oil cylinder 61, an oil outlet of the one-way valve in the second follower valve 6512 is communicated with a rodless cavity of the drilling machine compensation oil cylinder 61, when the first follower valve group 651 is powered on, the rod cavity and the rodless cavity of the drilling machine compensation oil cylinder 61 are communicated, and when the first follower valve group 651 is powered off, the rod cavity and the rodless cavity of the drilling machine compensation oil cylinder 61 are disconnected.
The second slave valve set 652 comprises a third slave valve 6521 and a fourth slave valve 6522, the third slave valve 6521 and the fourth slave valve 6522 are respectively provided with two groups of one-way valves with liquid inlets communicated with each other, the third slave valve 6521 is connected in the first branch 641, the oil outlet of one group of one-way valves in the third slave valve 6521 is communicated with the rod cavity of the drilling machine compensation oil cylinder 61, and the oil outlet of the other group of one-way valves is communicated with the rod cavity of the drilling machine sliding oil cylinder 62; a fourth slave valve 6522 is connected in the second branch 642, the oil outlets of one group of one-way valves in the fourth slave valve 6522 are communicated with the rodless cavity of the rig compensation cylinder 61, the oil outlets of the other group of one-way valves are communicated with the rodless cavity of the rig sliding cylinder 62, and when the second slave valve group 652 is electrified, the first branch 641 is communicated with the second branch; when the second follower valve set 652 is de-energized, both the first branch 641 and the second branch are open.
In this embodiment, a first overflow valve 66 is further connected between the first spool valve 6511 and the second spool valve 6512, so as to protect the first oil path 63 to a certain extent, and the first oil path 63 is in a normal pressure range.
A pressure sensor 67 is arranged between the rod cavity and the rodless cavity of the drill sliding oil cylinder 62, and the rod cavity/rodless cavity of the drill sliding oil cylinder 62 is also connected with a second overflow valve 68, so that on one hand, the pressure of hydraulic oil in an oil path is detected by the pressure sensor 67; on the other hand, by setting the pressure value of second spill valve 68, the oil passage is ensured to be within the normal operating pressure range.
Referring to fig. 3, the synchronous operation system further includes a third oil path 69, the third oil path 69 is connected between the rod chamber and the rodless chamber of the thrust cylinder 5, the third oil path 69 is further provided with an oil return tank (not shown), a hydraulic lock 691 for controlling the on/off of the third oil path 69, and a differential valve 692 for controlling the opening/closing of the hydraulic lock 691, the third oil path 69 is further provided with a pressure relief port 693, and the oil return tank is connected to the pressure relief port 693. In this embodiment, the propulsion cylinders 5 are provided with four groups, and the supporting shoes 4 are provided with two groups, wherein two groups of propulsion cylinders 5 and one group of supporting shoes 4 are located on the left side of the main beam 1, and the other two groups of propulsion cylinders 5 and supporting shoes 4 are located on the right side of the main beam 1, and accordingly, the differential valve 692 is provided with four groups, which correspond to the four groups of propulsion cylinders 5 one-to-one.
Specifically, when the differential valve 692 is energized, the hydraulic lock 691 is opened, and the rod chamber, the rodless chamber and the oil return tank of the thrust cylinder 5 are communicated with each other; when the differential valve 692 is de-energized, the rod chamber and the rodless chamber of the thrust cylinder 5 are disconnected, and both the rod chamber and the rodless chamber of the thrust cylinder 5 are disconnected from the return tank.
The tunnel boring machine has a boring working state, a stepping working state, a supporting shoe stretching working state and a supporting shoe straightening working state, and the control method of the synchronous operation system comprises the following steps:
when the tunnel boring machine is in a boring operation state, the saddle 2 is stationary, the first follower valve block 651 is kept powered off, the second follower valve block 652 is powered on, the differential valve 692 is powered off, namely, the rod cavity and the rodless cavity of the compensation oil cylinder 61 of the drilling machine are disconnected, the second oil way 64 is communicated, the third oil way is disconnected, at the moment, the main beam 1 moves forwards along the length direction of the main beam, thereby driving the telescopic rod 612 of the compensation oil cylinder to extend/contract relative to the cylinder body 611 of the compensation oil cylinder, so that the hydraulic oil in the compensation oil cylinder 61 of the drilling machine is pressed into the sliding oil cylinder 62 of the drilling machine, driving the telescopic rod 622 of the sliding oil cylinder to extend/contract, thereby driving the jumbolter 3 to move relative to the main beam 1, the extension/contraction speed of the telescopic rod 612 of the compensation oil cylinder is the same as that of the telescopic rod 622 of the sliding oil cylinder, and the jumbolter 3 and the wall of the hole are kept static, so that the jumbolter 3 can still perform drilling operation in the tunneling process;
when the tunnel boring machine is in a step-changing working state, the main beam 1 is static, the first follow-up valve set 651 is kept powered on, the second follow-up valve set 652 is powered off, the differential valve 692 is powered off, the first oil path is communicated, the second oil path 64 is disconnected, the third oil path is disconnected, namely, the rod cavity and the rodless cavity of the drilling machine compensation oil cylinder 61 are communicated, no pressure difference exists between the rod cavity and the rodless cavity of the drilling machine compensation oil cylinder 61, the drilling machine compensation oil cylinder 61 and the drilling machine sliding oil cylinder 62 are not linked, at the moment, the saddle frame 2 moves forwards along the length direction of the main beam 1 to drive the drilling machine compensation oil cylinder 61 to contract/extend, and the drilling machine sliding oil cylinder 62 is static relative to the main beam;
when the tunnel boring machine is in a stretching working state of the supporting shoes 4, the saddle frame 2 and the main beam 1 are static, the first follow-up valve set 651 is powered off, the second follow-up valve set 652 is powered on, the differential valve 692 is powered on, namely the first oil path 63 is disconnected, the second oil path 64 is connected, the third oil path 69 is connected, and the drilling machine compensation oil cylinder 61 and the drilling machine sliding oil cylinder 62 can be linked, so that even if the supporting shoes 4 are stretched, the saddle frame 2 and the main beam are relatively displaced, the anchor rod drilling machine 3 can still be static relative to the hole wall, and the rod cavity, the rodless cavity and the oil return tank of the propulsion oil cylinder 5 are mutually communicated, so that the pressure of hydraulic oil in the oil paths can be relieved, the supporting shoes 4 drive the telescopic rods 52 of the propulsion oil cylinder to stretch/shrink, and in the process, the pressure building-out situation of the hydraulic system cannot occur.
When the tunnel boring machine is in a work state of straightening the supporting shoes 4, the supporting shoes 4 stop stretching and retracting, the first follow-up valve group 651 is electrified, the second follow-up valve group 652 is electrified, the differential valve 692 is powered off, namely the first oil path 63 is communicated, the second oil path 64 is communicated, the third oil path 69 is disconnected, the drill compensation oil cylinder 61 and the drill sliding oil cylinder 62 are not linked, and in the process, each group of the propulsion oil cylinders 5 is controlled through an external hydraulic control system (not shown in the figure) to straighten the supporting shoes 4.
In the control method, when the tunnel boring machine is in a tunneling working state, a stepping working state, a shoe supporting telescopic working state and a shoe supporting straightening working state, the jumbolter 3 is always in the same position, namely when the tunnel boring machine is in a tunneling/stopping state, the jumbolter 3 can carry out drilling operation, and the construction efficiency is improved.
In the above control method, the specific logic control of the slave valve set 65 and the differential valve 692 is shown in fig. 4.
To sum up, the utility model discloses a synchronous operation system of tunnel boring machine, through add synchronous operation system between girder 1 and roofbolter 3, at the tunneling machine tunnelling and shut down the in-process, roofbolter 3 homoenergetic is beaten the operation, the work efficiency has been improved, and simultaneously, still set up hydraulic pressure lock 691 and differential valve 692 between the pole chamber that has and the no pole chamber of thrust cylinder 5, can be to the release of the relevant hydraulic pressure oil circuit of thrust cylinder 5, ensure the security of oil circuit.
The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable people skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.
Claims (10)
1. The utility model provides a synchronous operation system of tunnel boring machine, tunnel boring machine include the girder, set up in on the girder and can follow girder length direction gliding saddle from beginning to end, set up on the girder and follow girder length direction gliding jumbolter from beginning to end, locate the saddle left and right sides and can be relative saddle concertina movement prop the boots, set up in prop the boots with thrust cylinder between the girder, thrust cylinder includes the thrust cylinder body and can be relative the flexible thrust cylinder telescopic link of thrust cylinder body, the thrust cylinder body with one of both of thrust cylinder telescopic link with prop boots fixed connection, another with girder fixed connection, its characterized in that:
the roofbolter with still be provided with synchronous operation system between the girder, synchronous operation system includes:
the drilling machine compensation oil cylinder comprises a compensation oil cylinder body and a compensation oil cylinder telescopic rod capable of stretching relative to the compensation oil cylinder body, one of the compensation oil cylinder body and the compensation oil cylinder telescopic rod is fixedly connected with the main beam, the other one of the compensation oil cylinder body and the compensation oil cylinder telescopic rod is fixedly connected with the saddle, and the compensation oil cylinder telescopic rod stretches along the length direction of the main beam;
the drilling machine sliding oil cylinder comprises a sliding oil cylinder body and a sliding oil cylinder telescopic rod capable of extending relative to the sliding oil cylinder body, one of the sliding oil cylinder body and the sliding oil cylinder telescopic rod is fixedly connected with the main beam, the other one of the sliding oil cylinder body and the sliding oil cylinder telescopic rod is fixedly connected with the anchor rod drilling machine, the sliding oil cylinder telescopic rod extends and retracts along the length direction of the main beam,
a first oil way is connected between a rod cavity and a rodless cavity of the drilling machine compensation oil cylinder, a second oil way is connected between the drilling machine sliding oil cylinder and the drilling machine compensation oil cylinder, the second oil way comprises a first branch and a second branch, the first branch is connected between the rod cavity of the drilling machine compensation oil cylinder and the rod cavity of the drilling machine sliding oil cylinder, and the second branch is connected between the rodless cavity of the drilling machine compensation oil cylinder and the rodless cavity of the drilling machine sliding oil cylinder; or the first branch is connected between the rod cavity of the compensation oil cylinder of the drilling machine and the rodless cavity of the sliding oil cylinder of the drilling machine, and the second branch is connected between the rodless cavity of the compensation oil cylinder of the drilling machine and the rod cavity of the sliding oil cylinder of the drilling machine;
and the follow-up valve group comprises a first follow-up valve group capable of controlling the on-off of the first oil way and a second follow-up valve group capable of controlling the on-off of the second oil way.
2. A synchronous operating system of a tunnel boring machine according to claim 1, wherein: the first follow-up valve group comprises a first follow-up valve and a second follow-up valve which are mutually connected, the first follow-up valve and the second follow-up valve are respectively provided with a one-way valve, an oil inlet of the one-way valve in the first follow-up valve is communicated with an oil inlet of the one-way valve in the second follow-up valve, an oil outlet of the one-way valve in the first follow-up valve is communicated with a rod cavity of the compensation oil cylinder of the drilling machine, and an oil outlet of the one-way valve in the second follow-up valve is communicated with a rodless cavity of the compensation oil cylinder of the drilling machine.
3. A synchronous operating system of a tunnel boring machine according to claim 2, wherein: when the first follow-up valve group is electrified, a rod cavity and a rodless cavity of the compensation oil cylinder of the drilling machine are communicated; and when the first follow-up valve group is powered off, the rod cavity and the rodless cavity of the compensation oil cylinder of the drilling machine are disconnected.
4. A synchronous operating system of a tunnel boring machine according to claim 2, wherein: and a first overflow valve is connected between the first slave valve and the second slave valve.
5. A synchronous operating system of a tunnel boring machine according to claim 1, wherein: and a pressure sensor is arranged between a rod cavity and a rodless cavity of the sliding oil cylinder of the drilling machine.
6. A synchronous operating system of a tunnel boring machine according to claim 5, wherein: and the rod cavity/rodless cavity of the sliding oil cylinder of the drilling machine is also connected with a second overflow valve.
7. A synchronous operating system of a tunnel boring machine according to claim 1, wherein: the second follow-up valve group comprises a third follow-up valve and a fourth follow-up valve, the third follow-up valve and the fourth follow-up valve are respectively provided with two groups of one-way valves with liquid inlets communicated with each other, the third follow-up valve is connected in the first branch, the oil outlets of one group of one-way valves in the third follow-up valve are communicated with the rod cavity of the compensation oil cylinder of the drilling machine, and the oil outlets of the other group of one-way valves are communicated with the rod cavity of the sliding oil cylinder of the drilling machine; the oil outlets of one group of one-way valves in the fourth slave valve are communicated with the rodless cavity of the compensation oil cylinder of the drilling machine, and the oil outlets of the other group of one-way valves are communicated with the rodless cavity of the sliding oil cylinder of the drilling machine.
8. A synchronous operating system of a tunnel boring machine according to claim 7, wherein: when the second follow-up valve group is electrified, the first branch circuit is communicated with the second branch circuit; when the second follow-up valve group is powered off, the first branch circuit and the second branch circuit are both disconnected.
9. A synchronous operating system of a tunnel boring machine according to any one of claims 1 to 8, wherein: the synchronous operation system further comprises a third oil path, the third oil path is connected between the rod cavity and the rodless cavity of the propulsion oil cylinder, and an oil return tank, a hydraulic lock for controlling the third oil path to be switched on and off and a differential valve for controlling the hydraulic lock to be switched on and off are further arranged in the third oil path.
10. A synchronous operating system of a tunnel boring machine according to claim 9, wherein: when the differential valve is electrified, the hydraulic lock is opened, and the rod cavity, the rodless cavity and the oil return tank of the propulsion oil cylinder are communicated with each other; when the differential valve is powered off, the rod cavity and the rodless cavity of the propulsion oil cylinder are disconnected, and the rod cavity and the rodless cavity of the propulsion oil cylinder are both disconnected with the oil return tank.
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| CN202120647178.0U CN214464171U (en) | 2021-03-30 | 2021-03-30 | Synchronous operation system of tunnel boring machine |
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| CN202120647178.0U CN214464171U (en) | 2021-03-30 | 2021-03-30 | Synchronous operation system of tunnel boring machine |
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