CN115217480A - Connection structure of host machine and main jacking device of dual-mode tunneling machine and construction method of connection structure - Google Patents
Connection structure of host machine and main jacking device of dual-mode tunneling machine and construction method of connection structure Download PDFInfo
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- CN115217480A CN115217480A CN202210868982.0A CN202210868982A CN115217480A CN 115217480 A CN115217480 A CN 115217480A CN 202210868982 A CN202210868982 A CN 202210868982A CN 115217480 A CN115217480 A CN 115217480A
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- 230000005641 tunneling Effects 0.000 title claims abstract description 86
- 238000010276 construction Methods 0.000 title claims abstract description 28
- 239000007788 liquid Substances 0.000 claims description 21
- 238000009412 basement excavation Methods 0.000 claims description 6
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- 238000006243 chemical reaction Methods 0.000 abstract description 2
- 230000005540 biological transmission Effects 0.000 abstract 1
- 238000003466 welding Methods 0.000 description 9
- 238000005452 bending Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 3
- 239000002689 soil Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/08—Lining with building materials with preformed concrete slabs
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/10—Making by using boring or cutting machines
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/10—Making by using boring or cutting machines
- E21D9/1086—Drives or transmissions specially adapted therefor
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- Engineering & Computer Science (AREA)
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- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
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- Environmental & Geological Engineering (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention relates to a connection structure of a main engine and a main jacking device of a dual-mode tunneling machine and a construction method thereof, wherein the connection structure comprises the following steps: one end of the shell is fixed on a shell of the main machine of the tunneling machine, and an opening communicated with the accommodating space is formed at one end of the shell close to the main machine of the tunneling machine; the ring plate is arranged in a T shape with the shell and is welded and fixed with the shell; the telescopic rods are fixedly arranged at the tail end of the main machine of the tunneling machine at intervals and have adjustable lengths, and extend out of the opening and abut against the ring plate; by extending the telescopic rod, the telescopic rod is abutted between the ring plate and the tail end of the main machine of the heading machine. The invention solves the problem of jacking force transmission when the dual-mode heading machine carries out mode conversion from a shield mode to a pipe jacking mode, and the main jacking device and the heading machine main machine are connected through the connecting structure, so that the shield construction function and the pipe jacking construction function are integrated into a whole, the reliability of the connecting part is enhanced, the potential safety hazard is reduced, and the construction efficiency and the construction quality are improved.
Description
Technical Field
The invention relates to the field of tunnel construction, in particular to a connecting structure of a main engine and a main jacking device of a dual-mode tunneling machine and a construction method thereof.
Background
In urban tunnel construction, common heading machines are divided into a shield heading machine and a top pipe heading machine, the shield heading machine is suitable for long-distance and multi-curvature tunnel construction, has high manufacturing cost and complex functions, and is generally used for highway cross-river tunnels, subway interval tunnels and the like; the pipe pushing machine is used for short-distance (< 200 m) and linear tunnel construction, and has low manufacturing cost and relatively simple function.
In order to exert the advantages of the pipe jacking machine and the shield machine at the same time, a main machine of the shield pipe jacking dual-mode tunneling machine is developed. Considering that the propelling principle of the shield and the jacking pipe is different, the shield machine uses a propelling oil cylinder to prop against the front end of the duct piece to drive forwards. The push bench pushes the pipe joint forward by using a main pushing device. Therefore, when the double-mode heading machine is switched from the shield mode to the pipe jacking mode, a corresponding connecting structure is needed to bear the jacking force of the main jacking device and transmit the jacking force forwards.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a connecting structure of a main machine and a main jacking device of a dual-mode tunneling machine and a construction method thereof, which solve the problem that the jacking force is transmitted forwards when the dual-mode tunneling machine carries out mode conversion from a shield mode to a pipe jacking mode.
The technical scheme for realizing the purpose is as follows:
the invention provides a connecting structure of a main machine and a main jacking device of a dual-mode tunneling machine, wherein the main machine of the tunneling machine is opposite to an excavation surface, the main jacking device and the main machine of the tunneling machine are coaxially arranged and are positioned on one side of the main machine of the tunneling machine, which is far away from the excavation surface, a plurality of pipe joints are formed between the main jacking device and the main machine of the tunneling machine, and the connecting structure comprises:
one end of the shell is fixed on a shell of the main machine of the tunneling machine, an accommodating space is formed in the hollow part of the shell, and an opening communicated with the accommodating space is formed at one end of the shell close to the main machine of the tunneling machine;
the ring plate is arranged in a T shape with the shell and is welded and fixed with the shell, the inner diameter of the ring plate is the same as that of the pipe joint, and one end of the ring plate, far away from the shell, is attached to the pipe joint; and
the telescopic rods are fixedly arranged at the tail end of the main machine of the tunneling machine at intervals and are adjustable in length, the telescopic rods are arranged in the direction parallel to the axis direction of the main machine of the tunneling machine, and the telescopic rods extend out of the opening and abut against the ring plate;
by extending the telescopic rod, the telescopic rod is abutted between the ring plate and the tail end of the main tunneling machine, so that the jacking force of the main jacking device is transmitted to the main tunneling machine along the telescopic rod forwards, and the bending deformation of a connecting welding seam of the shell and the main tunneling machine is avoided.
The invention provides a connecting structure of a main machine and a main jacking device of a dual-mode tunneling machine, which is characterized in that a telescopic rod is used for abutting between a ring plate of the connecting structure and the corresponding end part of the main machine of the tunneling machine, so that stress caused at the connecting part of a shell of the connecting structure and the main machine of the tunneling machine when the main jacking device pushes a pipe is offset, the problem that the connecting part of the main machine of the tunneling machine and the main jacking device is easy to be unstable and break is solved, the main jacking device and the main machine of the tunneling machine are connected through the connecting structure, a shield construction function and a pipe jacking construction function are integrated, the reliability of the connecting part is enhanced, potential safety hazards are reduced, and the construction efficiency and the construction quality are improved.
The connecting structure of the main machine and the main jacking device of the dual-mode tunneling machine is further improved in that the connecting structure further comprises a through hole corresponding to the pipe joint and arranged on the shell, and a release rod corresponding to the through hole and arranged in the accommodating space, the length of the release rod is adjustable, and the release rod extends outwards from the through hole and pushes against the pipe joint by extending the release rod, so that the ring plate and the pipe joint are separated.
The connecting structure of the main machine and the main jacking device of the dual-mode tunneling machine is further improved in that the connecting structure further comprises a groove formed at the end part of the pipe joint and a bearing plate which corresponds to the groove and is formed on the shell, and the shell is connected with the pipe joint by inserting the bearing plate into the groove.
The connecting structure of the main engine and the main jacking device of the dual-mode tunneling machine is further improved in that the groove is formed in the outer side wall of the pipe section, and the surface of the bearing plate is flush with the outer side wall of the shell and the outer side wall of the pipe piece.
The connection structure of the host machine and the main jacking device of the dual-mode tunneling machine is further improved in that the connection structure further comprises a plurality of ribbed plates fixedly arranged in the accommodating space at intervals, and the ribbed plates and the telescopic rod are arranged in a staggered mode.
The connection structure of the host machine and the main jacking device of the dual-mode tunneling machine is further improved in that the telescopic rod is a hydraulic telescopic rod and comprises an oil cylinder, a piston arranged on the oil cylinder in a sliding mode and a piston rod fixed on one side of the piston and partially extending out of the oil cylinder;
the connecting structure further comprises an oil tank which is connected with the oil cylinder and contains liquid and a reversing valve which is connected between the oil tank and the oil cylinder, and the liquid in the oil tank is controlled to enter the oil cylinder from one side of the piston, which is far away from or close to the piston rod, through the reversing valve so as to push the piston and drive the piston rod to extend out of or retract into the oil cylinder.
The connecting structure of the main machine and the main jacking device of the double-mode tunneling machine is further improved in that the connecting structure further comprises a balance valve connected between the reversing valve and the oil cylinder.
The connection structure of the main machine and the main jacking device of the dual-mode tunneling machine is further improved in that the connection structure further comprises a hydraulic pump which is connected between the oil tank and the reversing valve and used for pressurizing liquid, and a proportional overflow valve which is connected between the hydraulic pump and the reversing valve, wherein the pressure of the pressurized liquid is controlled through the proportional overflow valve, so that the pressure of the liquid is smaller than or equal to a set threshold value.
The connection structure of the main machine and the main jacking device of the dual-mode tunneling machine is further improved in that a set threshold value is 2MPa.
The invention provides a construction method of a connection structure of a main machine and a main jacking device of a dual-mode tunneling machine, which comprises the following steps:
providing a shell and a plurality of telescopic rods, installing the telescopic rods in the shell, fixing one end of the shell to the main machine of the tunneling machine, and attaching the other end of the shell to a pipe joint, so that the plurality of telescopic rods are arranged in parallel to the axial direction of the main machine of the tunneling machine;
and extending the plurality of telescopic rods to enable the telescopic rods to abut against the space between the ring plate and the tail end of the main tunneling machine, and the jacking force of the main jacking device can be transmitted to the main tunneling machine along the telescopic rods, so that the bending deformation of a connecting welding seam of the shell and the main tunneling machine is avoided.
Drawings
Fig. 1 is a schematic usage state diagram of a connection structure of a main machine and a main jacking device of a dual-mode tunneling machine.
Fig. 2 is a perspective view of a portion a of fig. 1.
Fig. 3 is a side sectional view of a portion a of fig. 1, in which the telescopic bar is omitted.
Fig. 4 is a schematic diagram of a control assembly of a telescopic rod part in the connecting structure of the main frame and the main jacking device of the dual-mode tunneling machine.
Detailed Description
The invention is further described with reference to the following figures and specific examples.
Referring to fig. 1, the invention provides a connection structure of a main machine and a main jacking device of a dual-mode tunneling machine and a construction method thereof, stress caused at the connection part of a shell of the connection structure and the main machine of the tunneling machine when a main jacking device pushes a pipe is offset by using a telescopic rod to abut against between a ring plate of the connection structure and the corresponding end part of the main machine of the tunneling machine, the problem that the connection structure of the main machine of the tunneling machine and the main jacking device is easy to be unstable and break is solved, the main jacking device and the main machine of the tunneling machine are connected through the connection structure, a shield construction function and a pipe jacking construction function are integrated, the reliability of the connection part is enhanced, potential safety hazards are reduced, and the construction efficiency and the construction quality are improved. The following describes a connection structure of the main machine and the main jacking device of the dual-mode tunneling machine in combination with the accompanying drawings.
Referring to fig. 1, fig. 1 is a schematic usage state diagram of a connection structure of a main machine and a main jacking device of a dual-mode tunneling machine according to the present invention. The following describes a connection structure between the main machine and the main jacking device of the dual-mode heading machine in combination with fig. 1.
As shown in fig. 1, in the connection structure of the dual-mode main heading machine and the main jacking device of the invention, the main heading machine 21 is opposite to the excavation surface, the main jacking device 22 is coaxial with the main heading machine 21 and is positioned on one side of the main heading machine 21 far away from the excavation surface, and a plurality of pipe joints 23 are formed between the main jacking device 22 and the main heading machine 21, and the connection structure comprises:
one end of the shell is fixed on a shell 11 of the main tunneling machine 21, an accommodating space is formed in the shell 11 in a hollow mode, and an opening communicated with the accommodating space is formed at one end, close to the main tunneling machine 21, of the shell;
the ring plate 112 is arranged in a T shape with the shell 11 and is welded and fixed with the shell 11, the inner diameter of the ring plate 112 is the same as that of the pipe joint 23, and one end, far away from the shell 11, of the ring plate 112 is attached to the pipe joint 23; and
the telescopic rods 12 are fixedly arranged at the tail end of the main tunneling machine at intervals and have adjustable lengths, the telescopic rods 12 are arranged along the direction parallel to the axis of the main tunneling machine 21, and the telescopic rods 12 extend out of the opening and abut against the ring plate 112;
by extending the telescopic rod 12 so that the telescopic rod 12 abuts against the corresponding end part of the ring plate 112 and the main heading machine 21, the pushing force of the main pushing device 22 can be transmitted forward to the main heading machine 21 along the telescopic rod 12, thereby preventing the connecting weld of the shell 11 and the main heading machine 21 from bending and deforming.
Specifically, the telescopic rod further comprises a plurality of ribbed plates 13 fixedly arranged in the accommodating space at intervals, and the ribbed plates 13 and the telescopic rod 12 are arranged in a staggered mode so as to improve the connection strength of the shell 11 and the ring plate 112.
As a preferred embodiment of the present invention, the present invention further includes a through hole corresponding to the pipe joint 23 and opened in the ring plate 112, and a detachment rod corresponding to the through hole and installed in the accommodating space, wherein the detachment rod has an adjustable length, and the detachment rod extends out of the through hole and pushes against the pipe joint 23 by extending the detachment rod, thereby separating the ring plate 112 and the pipe joint 23.
Specifically, as shown in fig. 2 and 3, the pipe joint further includes a groove formed at an end of the pipe joint 23 and a receiving plate 111 corresponding to the groove and formed on the housing 11, and the receiving plate 111 is inserted into the groove, so that the housing 11 is connected to the pipe joint 23, and thereby, external soil and water are prevented from entering the pipe joint 23.
Preferably, the groove is opened on the outer side wall of the pipe section 23,the surface of the bearing plate and the outer side wall of the shell and the outer side walls of the segments are flush.
Further, the telescopic rod 12 is a hydraulic telescopic rod and comprises an oil cylinder, a piston slidably arranged on the oil cylinder, and a piston rod fixed on one side of the piston and partially extending out of the oil cylinder;
the connecting structure further comprises an oil tank 14 which is connected with the oil cylinder and contains liquid and a reversing valve 15 which is connected between the oil tank 14 and the oil cylinder, and the reversing valve 15 is used for controlling the liquid in the oil tank 14 to enter the oil cylinder from one side of the piston, which is far away from or close to the piston rod, so as to push the piston and drive the piston rod to extend out of or retract into the oil cylinder.
Preferably, a balance valve 16 is further included, connected between the direction valve 15 and the cylinder.
Specifically, the hydraulic control device further comprises a hydraulic pump 17 which is connected between the oil tank 14 and the reversing valve 15 and used for pressurizing liquid, and a proportional overflow valve 18 which is connected between the hydraulic pump 17 and the reversing valve 15, wherein the pressure of the pressurized liquid is controlled through the proportional overflow valve 18, so that the pressure of the liquid is smaller than or equal to a set threshold value, and the phenomenon that the connection between the shell 11 and the tunneling machine main body 21 is damaged due to overlarge ejection force of the telescopic rod 12 on the shell 11 and the tunneling machine main body 21 is avoided.
Preferably, the threshold is set to 2MPa.
The specific implementation method of the invention is as follows:
fixing the shell 11 to the end part of the main tunneling machine 21 close to the main jacking device 22 in a welding manner, and inserting the bearing plate 111 into the groove of the pipe joint 23 to prevent external water and soil from entering the pipe joint 23;
as shown in fig. 4, the hydraulic pump 17 is used for pressurizing the liquid in the oil tank 14, and then the liquid enters the oil cylinder at one side of the piston far away from the piston rod from the balance valve 16 at the left side through the reversing valve 15, so that the piston rod extends outwards, the length of the telescopic rod 12 is lengthened and abuts against the corresponding end parts of the ring plate 14 and the tunneling machine main body 21, at the moment, the liquid at one side of the piston near the piston rod in the oil cylinder flows back to the oil tank 14 through the balance valve 16 at the right side, the pressure of the proportional overflow valve 18 at the outlet of the hydraulic pump 17 can be set to be 2MPa at most, and the situation that the excessive jacking force of the telescopic rod 12 causes the tensile and bending deformation of the welding seam connecting the shell 11 and the tunneling machine main body 21 is prevented;
when the reversing valve 15 is in a neutral position after power failure, the port A and the port B of the outlet of the reversing valve 15 are communicated with the port T, the balance valve 16 cannot be opened without control pressure at this time, oil ways of two cavities of the oil cylinder are locked, the telescopic rod 12 is in a locking and pressure-removing state after pushing against the ring plate 112 and the tunneling machine main machine 21, at the moment, the main jacking device 22 exerts jacking force on the pipe joint 23 and the ring plate 112, and as the telescopic rod 12 is arranged between the ring plate 112 and the tunneling machine main machine 21 for supporting, the jacking force of the main jacking device 22 can be transmitted to the tunneling machine main machine 21 along the telescopic rod 12, so that the bending deformation of a connecting welding seam of the shell 11 and the tunneling machine main machine 21 is avoided. (ii) a
After the construction is completed, the release rod can be extended so that the release rod extends out of the through hole and pushes against the pipe joint 23, thereby separating the pipe joint 23 and the collar plate 112, so that the receiving plate 111 can be released from the groove, thereby separating the main excavator body 21 from the pipe joint 23.
The invention also provides a construction method of the connection structure of the main machine and the main jacking device of the dual-mode tunneling machine, which comprises the following steps:
providing a shell 11 and a plurality of telescopic rods 12, installing the telescopic rods 12 in the shell 11, fixing one end of the shell 11 to the main tunneling machine 21 and attaching the other end of the shell 11 to a pipe joint 23, so that the plurality of telescopic rods 12 are arranged in an axial direction parallel to the main tunneling machine 21;
extending a plurality of telescopic rods 12 to enable the telescopic rods 12 to be abutted between the ring plate 112 and the corresponding end parts of the main heading machine 21, wherein the jacking force of the main jacking device 22 can be transmitted to the main heading machine 21 forwards along the telescopic rods 12, so that the bending deformation of a connecting welding seam of the shell 11 and the main heading machine 21 is avoided.
The concrete operation mode of the construction method provided by the invention is as follows:
fixing the shell 11 on the end part of the main tunneling machine 21 close to the main jacking device 22 in a welding manner, and inserting the bearing plate 111 into the groove of the pipe joint 23 to prevent external water and soil from entering the pipe joint 23;
the hydraulic pump 17 is used for pressurizing liquid in the oil tank 14, and then the liquid enters the oil cylinder at one side of the piston far away from the piston rod from the balance valve 16 at the left side through the reversing valve 15 so as to enable the piston rod to extend outwards, so that the length of the telescopic rod 12 is lengthened and abuts against the corresponding end parts of the ring plate 14 and the tunneling machine main machine 21, at the moment, the liquid at one side of the piston near the piston rod in the oil cylinder flows back to the oil tank 14 through the balance valve 16 at the right side, the pressure of the proportional relief valve 18 at the outlet of the hydraulic pump 17 can be set to be 2MPa at most, and the situation that the welding seam connecting the shell 11 and the tunneling machine main machine 21 is pulled to cause bending deformation due to too large jacking force of the telescopic rod 12 is prevented;
when the reversing valve 15 is in the neutral position after power loss, the port A and the port B at the outlet of the reversing valve 15 are communicated with the port T, the balance valve 16 cannot be opened without control pressure at the moment, oil passages of two cavities of the oil cylinder are locked, the telescopic rod 12 is in a locking and pressure-releasing state after being propped against the shell 11 and the tunneling machine main machine 21, at the moment, the main jacking device 22 exerts jacking force on the pipe joint 23 and the ring plate 112, and because the telescopic rod 12 is arranged between the ring plate 112 and the tunneling machine main machine 21 for supporting, the jacking force of the main jacking device 22 can be transmitted to the tunneling machine main machine 21 along the telescopic rod 12, so that the bending deformation of a connecting welding seam of the shell 11 and the tunneling machine main machine 21 is avoided. (ii) a
After the construction is completed, the release rod can be extended so that the release rod extends out of the through hole and pushes against the pipe joint 23, thereby separating the pipe joint 23 and the collar plate 112, so that the receiving plate 111 can be released from the groove, thereby separating the main excavator 21 from the pipe joint 23.
While the present invention has been described in detail and with reference to the embodiments thereof as illustrated in the accompanying drawings, it will be apparent to one skilled in the art that various changes and modifications can be made therein. Therefore, certain details of the embodiments should not be construed as limitations of the invention, except insofar as the following claims are interpreted to cover the invention.
Claims (10)
1. The utility model provides a connection structure of double mode entry driving machine host computer and main advancing device, its characterized in that, the entry driving machine host computer is relative with the excavation face, main advancing device with the coaxial setting of entry driving machine host computer just is located the entry driving machine host computer is kept away from one side of excavation face, just main advancing device with be formed with a plurality of tube couplings between the entry driving machine host computer, connection structure includes:
one end of the shell is fixed on a shell of the main machine of the tunneling machine, an accommodating space is formed in the shell in a hollow mode, and an opening communicated with the accommodating space is formed at one end, close to the main machine of the tunneling machine, of the shell;
the ring plate is arranged in a T shape with the shell and is welded and fixed with the shell, the inner diameter of the ring plate is the same as that of the pipe joint, and one end, far away from the shell, of the ring plate is attached to the pipe joint; and
the telescopic rods are fixedly arranged at the tail end of the main machine of the tunneling machine at intervals and are adjustable in length, the telescopic rods are arranged along the direction parallel to the axis of the main machine of the tunneling machine, and the telescopic rods extend out of the tail end of the main machine and abut against the ring plate;
by extending the telescopic rod, the telescopic rod is abutted between the ring plate and the tail end of the main tunneling machine, so that the jacking force of the main jacking device is transmitted to the main tunneling machine along the telescopic rod forwards.
2. The connecting structure of a main machine and a main jacking device of a dual-mode tunneling machine according to claim 1, further comprising a through hole corresponding to the pipe joint and arranged on the ring plate, and a release rod corresponding to the through hole and arranged in the accommodating space, wherein the length of the release rod is adjustable, and the release rod extends outwards from the through hole and pushes against the pipe joint by extending the release rod, so that the ring plate is separated from the pipe joint.
3. The connecting structure of a main machine and a main jacking device of a dual-mode heading machine as claimed in claim 1, further comprising a groove formed at the end of the pipe joint and a bearing plate corresponding to the groove and formed on the shell, wherein the radial position of the shell and the pipe joint is kept fixed by inserting the bearing plate into the groove.
4. The connecting structure of the main machine and the main jacking device of the dual-mode tunneling machine according to claim 3, wherein the groove is formed in the outer side wall of the pipe section, and the surface of the bearing plate is flush with the outer side wall of the shell and the outer side wall of the pipe piece.
5. The connecting structure of the main machine and the main jacking device of the dual-mode heading machine according to claim 1, further comprising a plurality of ribbed plates fixedly arranged in the accommodating space at intervals, wherein the ribbed plates and the telescopic rod are arranged in a staggered manner.
6. The connecting structure of the main frame and the main jacking device of the dual-mode tunneling machine according to claim 1, wherein the telescopic rod is a hydraulic telescopic rod and comprises an oil cylinder, a piston arranged on the oil cylinder in a sliding manner, and a piston rod fixed on one side of the piston and partially extending out of the oil cylinder;
the connecting structure further comprises an oil tank which is connected with the oil cylinder and contains liquid and a reversing valve which is connected between the oil tank and the oil cylinder, wherein the reversing valve controls the liquid in the oil tank to enter the oil cylinder from one side of the piston, which is far away from or close to the piston rod, so as to push the piston and drive the piston rod to extend out or retract into the oil cylinder.
7. The connecting structure of the main machine and the main jacking device of the dual-mode tunneling machine according to claim 6, further comprising a balance valve connected between the reversing valve and the cylinder.
8. The connection structure of a main machine and a main jacking device of a dual-mode tunneling machine according to claim 6, further comprising a hydraulic pump connected between the oil tank and the reversing valve and used for pressurizing the liquid, and a proportional overflow valve connected between the hydraulic pump and the reversing valve, wherein the pressure of the pressurized liquid is controlled by the proportional overflow valve so that the pressure of the liquid is less than or equal to a set threshold value.
9. The connection structure of a main machine and a main jacking device of a dual-mode heading machine according to claim 8, wherein the set threshold is 2MPa.
10. A construction method of a connection structure of a main machine and a main jacking device of a dual-mode heading machine according to claim 1, which is characterized by comprising the following steps:
providing the shell and a plurality of telescopic rods, installing the telescopic rods in the shell, fixing one end of the shell to the shield tunneling machine and attaching the other end of the shell to the ring plate, so that the plurality of telescopic rods are arranged along the axial direction parallel to the shield tunneling machine;
and extending the plurality of telescopic rods to enable the telescopic rods to be abutted between the ring plate and the tail end of the main machine of the heading machine, so that the jacking force of the main jacking device is transmitted to the main machine of the heading machine along the telescopic rods in a forward direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210868982.0A CN115217480A (en) | 2022-07-22 | 2022-07-22 | Connection structure of host machine and main jacking device of dual-mode tunneling machine and construction method of connection structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210868982.0A CN115217480A (en) | 2022-07-22 | 2022-07-22 | Connection structure of host machine and main jacking device of dual-mode tunneling machine and construction method of connection structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115217480A true CN115217480A (en) | 2022-10-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210868982.0A Pending CN115217480A (en) | 2022-07-22 | 2022-07-22 | Connection structure of host machine and main jacking device of dual-mode tunneling machine and construction method of connection structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115217480A (en) |
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2022
- 2022-07-22 CN CN202210868982.0A patent/CN115217480A/en active Pending
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