CN218894651U - Shield machine and shield body hinged oil cylinder protection device - Google Patents

Abstract

The utility model relates to a shield machine and a shield body hinged oil cylinder protection device, wherein the shield body hinged oil cylinder protection device comprises a front support, a rear support and a plurality of support components, wherein the front support and the rear support are respectively fixed on a front shield part and a rear shield part; the support assembly is used for propping up between the front support and the rear support. According to the utility model, when the shield machine needs to increase the propelling force to release the blocking machine, the supporting component can be very conveniently inserted into the sockets preset on the front shield component and the rear shield component to form a plurality of groups of supports distributed in the circumferential direction, and then the actual spacing of the front shield component and the rear shield component in the current working condition can be quickly adapted by adjusting the spacing of the two ends of the telescopic rod according to the current relative positions and angles of the front shield component and the rear shield component, so that the ultra-normal propelling force applied to the shield body by the propelling oil cylinder can be completely replaced by the hinging oil cylinder under the current working condition, and the hinging oil cylinder is prevented from being directly stressed to protect the hinging oil cylinder.

Description

Shield machine and shield body hinged oil cylinder protection device

Technical Field

The utility model relates to a shield machine part and a related technology of a structure for tunnel excavation construction, in particular to a shield body hinged oil cylinder protection device in a shield machine.

Background

The active articulated cylinder is arranged between the shield components, so that the steering flexibility of the shield machine in the turning construction can be improved, the wider turning radius range can be adapted, and the shield machine can be used for an active articulated system of the shield machine disclosed in the patent document of publication No. CN201554465U and the shield machine disclosed in the patent document of publication No. CN 111188623A. The hinged oil cylinders of the shield machine are arranged between a front shield part and a rear shield part which can swing relatively, the two shield parts can be a front shield and a middle shield, or a front part and a rear part of the middle shield, or can be arranged between the middle shield and a shield tail, or between the rear part of the middle shield and the shield tail, the hinged oil cylinders have different structural forms or naming modes, but the functions of the hinged oil cylinders are the same, and the hinged oil cylinders are used for enabling the front shield part and the rear shield part on the shield machine to swing relatively, so the hinged oil cylinders can be used for steering the shield parts functionally, the main purpose of the hinged oil cylinders is to steer a cutter disc at the front end of the shield machine to obtain a required turning radius so as to avoid damage to a segment by controlling steering by using a propulsion oil cylinder, and other parts behind the cutter disc, such as the middle shield and the shield tail, can also be steered (see the shield machine disclosed in patent document of publication No. CN 111188623A) so as to adapt to turning better.

However, in the construction of the shield machine using the above-mentioned "articulated cylinder" for steering, the following problems are present: when the shield machine digs into a hard rock stratum, the digging diameter is reduced due to abrasion of the cutter head gauge knife, so that the shield body is easy to be blocked. In order to get rid of the problem in time, the pushing force of a pushing cylinder (the rear end of a piston rod of the pushing cylinder is propped against a segment, a cylinder body of the pushing cylinder is fixed on a shield component, the shield component can be a middle shield or a shield tail) is often increased on site to try to get rid of the problem, the pushing force at the moment can be applied to an articulated cylinder between the shield components, and the pushing force at the moment can exceed the limit born by the articulated cylinder, so that the force born by the articulated cylinder between the two shield components is larger and damage phenomenon occurs, such as the articulated cylinder positioned between a front shell of the middle shield and a rear shell of the middle shield, or the cylinder between the front shield and the middle shield, or between the shield tail and the middle shield.

In order to protect the articulated cylinder, the current practice in the field is to support two shield components on the articulated cylinder: for example, a metal round bar is welded between the front shell of the middle shield and the rear shell of the middle shield so as to avoid that the thrust of the thrust cylinder is directly applied to the hinged cylinder. Although the method can play a role in protection, welding and planing operations are needed, so that the operation process is complex and the efficiency is low.

Disclosure of Invention

The utility model aims to provide a shield body articulated oil cylinder protection device which can more conveniently protect an articulated oil cylinder when a shield machine increases propulsion for getting rid of poverty. The utility model also provides a shield machine using the shield body articulated oil cylinder protection device, which can more conveniently protect the articulated oil cylinder between the front shield part and the rear shield part when the shield machine increases the propelling force of the propelling oil cylinder for releasing the blocking machine.

The shield tunneling machine comprises a propulsion oil cylinder, a hinged oil cylinder, a front shield component and a rear shield component which are connected through the hinged oil cylinder, and also comprises a shield body hinged oil cylinder protection device, wherein the shield body hinged oil cylinder protection device comprises a front support, a rear support and a plurality of support components, and the front support and the rear support are respectively fixed on the front shield component and the rear shield component; the front support comprises a front support and a plurality of front sockets which are fixed on the front support and distributed along the circumference, and the front support is in a circular shape or is a plurality of support bodies distributed along the circumference at intervals; the rear support comprises a rear support and a plurality of rear sockets which are fixed on the rear support and distributed along the circumference, and the rear support is a ring or a plurality of supporting bodies distributed along the circumference; the front socket and the rear socket are two groups of front and rear corresponding; the front socket and the rear socket are used for installing a supporting component; the support assembly is used for propping up between front support and back support, every support assembly includes the telescopic link and fixes two plugs at the telescopic link both ends, the telescopic link is used for adjusting the interval of two plugs, two plugs are preceding plug, back plug, correspond on preceding plug and the preceding socket and be provided with clearance fit's grafting structure, back plug and back socket correspond and are provided with clearance fit's grafting structure, preceding plug is used for inserting preceding socket, back plug is used for inserting back socket, grafting structure is used for restricting the plug in the direction of perpendicular to grafting direction's range of movement.

The utility model has the beneficial effects that: due to the fact that the shield body hinged oil cylinder protection device is arranged, when the shield machine needs to increase the propelling force to relieve the blocking machine, the supporting component can be very conveniently inserted into the sockets preset on the front shield component and the rear shield component to form a plurality of groups of supports distributed in the circumferential direction, then according to the current relative positions and angles of the front shield component and the rear shield component, the actual distance between the two ends of the front shield component and the rear shield component can be quickly adapted through the adjustment of the distance between the two ends of the telescopic rod and the actual distance between the front shield component and the rear shield component under the current working condition, and therefore the ultra-normal propelling force applied to the shield body by the propelling oil cylinder can be completely replaced by the hinged oil cylinder under the current working condition, the hinged oil cylinder is prevented from being directly stressed to protect the hinged oil cylinder, and the preset steering angle of the shield machine body is not influenced when the hinged oil cylinder is well protected. Therefore, the utility model perfectly solves the problem that the arrangement of the protection ejector rod in the existing protection mode is inconvenient when the tunnel boring machine increases the thrust of the thrust cylinder to release the blocking machine.

Preferably, the telescopic rod of the supporting component comprises a front nut, a bidirectional screw rod and a rear nut, the front plug is fixedly connected with the front nut, the rear plug is fixedly connected with the rear nut, the front end part and the rear end part of the bidirectional screw rod are provided with threads with opposite screwing directions, the front nut is in threaded connection with the front end part of the bidirectional screw rod to form a screw rod nut mechanism, and the rear nut is in threaded connection with the rear end part of the bidirectional screw rod to form the screw rod nut mechanism; the middle part of the bidirectional screw is provided with a torsion structure, and the torsion structure is used for inputting torque to the bidirectional screw so as to drive the bidirectional screw to rotate and drive the front nut and the rear nut to move relatively or move oppositely. The telescopic rod with the self-locking thread transmission mechanism serving as the protection device can be continuously adjusted in length to adapt to the length of the hinged oil cylinder, and is of a pure mechanical structure, more reliable in stress and safer to use.

Preferably, the torsion structure is a step shaft convexly arranged in the middle of the bidirectional screw rod, a through hole perpendicular to the axial direction of the bidirectional screw rod is formed in the middle of the step shaft, and a handle is inserted into the through hole to apply torque to the bidirectional screw rod.

Preferably, the insertion structure is a groove and a convex block, and the groove wall of the groove is in clearance fit with the convex block so as to adapt to the steering angles of the front shield part and the rear shield part of the shield machine.

Preferably, the front support and the rear support are a plurality of support plates distributed at intervals along the circumference, and the support plates and the hinged oil cylinders are uniformly distributed at intervals along the circumference.

The utility model provides a shield body articulated oil cylinder protection device which comprises a front support, a rear support and a plurality of support components, wherein the front support and the rear support are respectively fixed on a front shield part and a rear shield part of a shield machine, and an articulated oil cylinder is connected between the front shield part and the rear shield part; the front support comprises a front support and a plurality of front sockets which are fixed on the front support and distributed along the circumference, and the front support is in a circular shape or is a plurality of support bodies distributed along the circumference at intervals; the rear support comprises a rear support and a plurality of rear sockets which are fixed on the rear support and distributed along the circumference, and the rear support is a ring or a plurality of supporting bodies distributed along the circumference; the front socket and the rear socket are two groups of front and rear corresponding; the front socket and the rear socket are used for installing a supporting component; the support assembly is used for propping up between front support and back support, every support assembly includes the telescopic link and fixes two plugs at the telescopic link both ends, the telescopic link is used for adjusting the interval of two plugs, two plugs are preceding plug, back plug, correspond on preceding plug and the preceding socket and be provided with clearance fit's grafting structure, back plug and back socket correspond and are provided with clearance fit's grafting structure, preceding plug is used for inserting preceding socket, back plug is used for inserting back socket, grafting structure is used for restricting the plug in the direction of perpendicular to grafting direction's range of movement.

Preferably, the telescopic rod of the supporting component comprises a front nut, a bidirectional screw rod and a rear nut, the front plug is fixedly connected with the front nut, the rear plug is fixedly connected with the rear nut, the front end part and the rear end part of the bidirectional screw rod are provided with threads with opposite screwing directions, the front nut is in threaded connection with the front end part of the bidirectional screw rod to form a screw rod nut mechanism, and the rear nut is in threaded connection with the rear end part of the bidirectional screw rod to form the screw rod nut mechanism; the middle part of the bidirectional screw is provided with a torsion structure, and the torsion structure is used for inputting torque to the bidirectional screw so as to drive the bidirectional screw to rotate and drive the front nut and the rear nut to move relatively or move oppositely.

Preferably, the torsion structure is a step shaft convexly arranged in the middle of the bidirectional screw rod, a through hole perpendicular to the axial direction of the bidirectional screw rod is formed in the middle of the step shaft, and a handle is inserted into the through hole to apply torque to the bidirectional screw rod.

Preferably, the insertion structure is a groove and a convex block, and the groove wall of the groove is in clearance fit with the convex block so as to adapt to the steering angles of the front shield part and the rear shield part of the shield machine.

Preferably, the front support and the rear support are a plurality of support plates distributed at intervals along the circumference, and the support plates and the hinged oil cylinders are uniformly distributed at intervals in the circumferential direction of the shield component.

Drawings

FIG. 1 is a schematic diagram of a shield machine embodiment of the present utility model;

FIG. 2 isbase:Sub>A sectional view A-A of FIG. 1;

FIG. 3 is a sectional view B-B of FIG. 1;

FIG. 4 is a cross-sectional view of C-C of FIG. 3;

in the figure:

1. a middle shield front shell; 2. the oil cylinder is hinged; 3. a front support; 4. a rear support; 5. a support assembly; 5-1, front nut; 5-2, a rear nut; 5-3, a bidirectional screw rod; 5-4, a handle; 6. a thrust cylinder; 7. a segment; 8. middle shield rear shell.

Detailed Description

The shield machine embodiment of the utility model, as shown in fig. 1-4, comprises a thrust cylinder, a hinged cylinder 2, two front and rear shield components connected by the hinged cylinder 2, and a shield body hinged cylinder 2 protection device. The front and rear shield parts in this embodiment specifically refer to the middle shield front housing 1 and the middle shield rear housing 8. Of course, the front shell 1 and the rear shell 8 of the middle shield are specific examples, as described in the background art, in other types of shield machines, the front and rear shield components may also be a pair of corresponding front and rear shield components connected by the hinge cylinder 2, and it should be understood by those skilled in the art that, in other cases, the protection device for the shield body hinge cylinder 2 provided by the present utility model may also be installed on the pair of shield components connected by the hinge cylinder 2 to protect the hinge cylinder 2. In normal construction of the shield tunneling machine, the pushing oil cylinder can support the segment 7 to push the middle shield rear shell 8 to move forward, and the middle shield rear shell 8 can push the middle shield front shell 1 to move forward through the hinged oil cylinder 2.

The shield body articulated cylinder 2 protection device is arranged between the middle shield front shell 1 and the middle shield rear shell 8, and comprises a front support 3, a rear support 4 and a plurality of support components 5. The front support 3 and the rear support 4 are respectively fixed on the middle shield front shell 1 and the middle shield rear shell 8; the front support 3 comprises a front support, a plurality of front sockets fixed on the front support and distributed along the circumference, the front support is a plurality of front support plates fixed on the middle shield front shell 1 along the circumference at intervals, the rear support 4 comprises a rear support, a plurality of rear sockets fixed on the rear support and distributed along the circumference, and the rear support is a plurality of rear support plates fixed on the middle shield rear shell 8 along the circumference. In the circumferential direction, the front support plate, the rear support plate and the hinge cylinder 2 are uniformly arranged at intervals. The front socket and the rear socket are two groups of front and rear corresponding; a front and rear corresponding set of front and rear sockets are provided for mounting a support assembly 5.

The support component 5 is used for propping up between the front support 3 and the rear support 4, each support component 5 comprises a telescopic rod and two plugs fixed at two ends of the telescopic rod, the telescopic rod is used for adjusting the distance between the two plugs, and the two plugs are a front plug and a rear plug. The adaptive plug and socket (refer to a front plug and a front socket, and a rear plug and a rear socket) are respectively provided with a convex block and a groove, and the groove wall of the groove is in clearance fit with the convex block so as to adapt to the steering angles of the front shield part and the rear shield part of the shield machine, but the groove also limits the radial movement of the convex block, thereby limiting the movable range of the plug in the direction perpendicular to the plugging direction.

The telescopic rod of the support assembly 5 comprises a front nut 5-1, a bidirectional screw rod 5-3 and a rear nut 5-2, wherein a front plug is fixedly connected with the front nut 5-1, a rear plug is fixedly connected with the rear nut 5-2 (as shown in fig. 3 and 4, the rear plug is integrally fixed at the rear end of the rear nut 5-2), the front end and the rear end of the bidirectional screw rod 5-3 are provided with threads with opposite rotation directions, the front end of the front nut 5-1 is in threaded connection with the front end of the bidirectional screw rod 5-3 to form a screw rod nut mechanism, and the rear end of the rear nut 5-2 is in threaded connection with the rear end of the bidirectional screw rod 5-3 to form the screw rod nut mechanism. The middle part of the bidirectional screw rod 5-3 is convexly provided with a step shaft, the middle part of the step shaft is provided with a perforation which is perpendicular to the axial direction of the bidirectional screw rod 5-3, and the perforation is used for penetrating the handle 5-4 so as to apply torque to the bidirectional screw rod 5-3, and the bidirectional screw rod 5-3 is driven to rotate so as to drive the front nut 5-1 and the rear nut 5-2 to move relatively or move oppositely. The function of the screw threads with opposite screwing directions arranged at the two ends of the bidirectional screw rod 5-3 is that when the bidirectional screw rod 5-3 rotates clockwise (seen from right to left), the front nut 5-1 and the rear nut 5-2 are close to each other; when the bidirectional screw 5-3 rotates counterclockwise (seen from right to left), the front nut 5-1 and the rear nut 5-2 are away from each other.

When the shield tunneling machine is used, as shown in fig. 3 and 4, in case of abnormal conditions such as machine blocking and the like, the pushing force of the pushing oil cylinder needs to be increased to push the middle shield rear shell 8 to move forwards, the middle shield rear shell 8 pushes the middle shield front shell 1 to move forwards through the hinged oil cylinder 2, the hinged oil cylinder 2 may be damaged due to large pushing force, the support assemblies 5 can be installed for protecting the hinged oil cylinder 2, two ends of each support assembly 5 are respectively inserted into the grooves of the front support 3 and the corresponding grooves of the rear support 4, namely, the plug and the socket are in inserted fit, after the shield tunneling machine is put into a proper position, the handles 5-4 are used for driving the bidirectional screw rods 5-3 to rotate, so that all telescopic rods are stretched to a certain length and matched with the distance and angle required by the middle shield rear shell 8 and the middle shield front shell 1 under the current working condition, and the effect of protecting the hinged oil cylinder 2 can be achieved. And after the blocking machine is released, the handle 5-4 is used for reversely rotating the bidirectional screw rod 5-3, so that the supporting component 5 can be detached, and the normal construction of the shield machine is restored.

The shield body hinged oil cylinder protection device in the shield machine embodiment is adopted in the shield body hinged oil cylinder protection device.

In addition, in other embodiments of the present utility model, the front bracket and the rear bracket may also be circular plates, where the sockets are fixed on the circular plates and uniformly distributed along the circumference. In addition, the telescopic rod can also adopt a conventional linear reciprocating mechanism such as an electric push rod. In addition, the concave-convex structures of the plug and the socket can be exchanged, namely, the female end with holes is arranged on the plug, and the male end matched with the holes is arranged on the socket. In addition, the telescopic rod can also be in a structure of an intermediate screw sleeve and screws at two ends, a step shaft with a perforation in the middle of the telescopic rod forms a torsion structure, and the telescopic rod can also be changed into other conventional torque input structures, such as a hexagonal structure, and is matched with a spanner.

Claims (10)

1. The shield machine comprises a propulsion oil cylinder, a hinged oil cylinder (2) and a front shield component and a rear shield component which are connected through the hinged oil cylinder (2), and is characterized by further comprising a shield body hinged oil cylinder (2) protection device, wherein the shield body hinged oil cylinder (2) protection device comprises a front support (3), a rear support (4) and a plurality of support assemblies (5), and the front support (3) and the rear support (4) are respectively fixed on the front shield component and the rear shield component; the front support (3) comprises a front support and a plurality of front sockets which are fixed on the front support and distributed along the circumference, and the front support is in a circular shape or is a plurality of supporting bodies distributed along the circumference at intervals; the rear support (4) comprises a rear support and a plurality of rear sockets which are fixed on the rear support and distributed along the circumference, and the rear support is a ring or a plurality of supporting bodies distributed along the circumference; the front socket and the rear socket are two groups of front and rear corresponding; the front socket and the rear socket are used for installing a supporting component (5); the support assembly (5) is used for propping up between the front support (3) and the rear support (4), each support assembly (5) comprises a telescopic rod and two plugs fixed at two ends of the telescopic rod, the telescopic rod is used for adjusting the distance between the two plugs, the two plugs are a front plug and a rear plug, a clearance fit plug-in structure is correspondingly arranged on the front plug and the front socket, a clearance fit plug-in structure is correspondingly arranged on the rear plug and the rear socket, the front plug is used for being inserted into the front socket, the rear plug is used for being inserted into the rear socket, and the plug-in structure is used for limiting the movable range of the plug in the direction perpendicular to the plug-in direction.

2. The shield tunneling machine according to claim 1, wherein the telescopic rod of the supporting component (5) comprises a front nut (5-1), a bidirectional screw rod (5-3) and a rear nut (5-2), the front plug is fixedly connected with the front nut (5-1), the rear plug is fixedly connected with the rear nut (5-2), the front end and the rear end of the bidirectional screw rod (5-3) are provided with threads with opposite rotation directions, the front nut (5-1) is in threaded connection with the front end of the bidirectional screw rod (5-3) to form a screw rod nut mechanism, and the rear nut (5-2) is in threaded connection with the rear end of the bidirectional screw rod (5-3) to form the screw rod nut mechanism; the middle part of the bidirectional screw rod (5-3) is provided with a torsion structure, and the torsion structure is used for inputting torque to the bidirectional screw rod (5-3) so as to drive the bidirectional screw rod (5-3) to rotate and drive the front nut (5-1) and the rear nut (5-2) to move relatively or oppositely.

3. The shield tunneling machine according to claim 2, wherein the torsion structure is a step shaft protruding from the middle of the bidirectional screw (5-3), and a hole perpendicular to the axial direction of the bidirectional screw (5-3) is formed in the middle of the step shaft, and is used for inserting a handle (5-4) in the hole so as to apply torque to the bidirectional screw (5-3).

4. A shield machine according to claim 1, 2 or 3, wherein the insertion structure is a groove and a projection, and the groove wall of the groove is in clearance fit with the projection so as to adapt to the steering angles of the front shield component and the rear shield component of the shield machine.

5. A shield machine according to claim 1, 2 or 3, wherein the front support and the rear support are a plurality of support plates distributed at intervals along the circumference, and the support plates are uniformly distributed at intervals with the articulated cylinder (2) in the circumferential direction.

6. The shield body articulated cylinder (2) protection device is characterized by comprising a front support (3), a rear support (4) and a plurality of support assemblies (5), wherein the front support (3) and the rear support (4) are respectively fixed on a front shield part and a rear shield part of a shield machine, and the articulated cylinder (2) is connected between the front shield part and the rear shield part; the front support (3) comprises a front support and a plurality of front sockets which are fixed on the front support and distributed along the circumference, and the front support is in a circular shape or is a plurality of supporting bodies distributed along the circumference at intervals; the rear support (4) comprises a rear support and a plurality of rear sockets which are fixed on the rear support and distributed along the circumference, and the rear support is a ring or a plurality of supporting bodies distributed along the circumference; the front socket and the rear socket are two groups of front and rear corresponding; the front socket and the rear socket are used for installing a supporting component (5); the support assembly (5) is used for propping up between the front support (3) and the rear support (4), each support assembly (5) comprises a telescopic rod and two plugs fixed at two ends of the telescopic rod, the telescopic rod is used for adjusting the distance between the two plugs, the two plugs are a front plug and a rear plug, a clearance fit plug-in structure is correspondingly arranged on the front plug and the front socket, a clearance fit plug-in structure is correspondingly arranged on the rear plug and the rear socket, the front plug is used for being inserted into the front socket, the rear plug is used for being inserted into the rear socket, and the plug-in structure is used for limiting the movable range of the plug in the direction perpendicular to the plug-in direction.

7. The shield body articulated cylinder (2) protection device according to claim 6, wherein the telescopic rod of the supporting component (5) comprises a front nut (5-1), a bidirectional screw rod (5-3) and a rear nut (5-2), the front plug is fixedly connected with the front nut (5-1), the rear plug is fixedly connected with the rear nut (5-2), the front end and the rear end of the bidirectional screw rod (5-3) are provided with threads with opposite rotation directions, the front nut (5-1) is in threaded connection with the front end of the bidirectional screw rod (5-3) to form a screw rod nut mechanism, and the rear nut (5-2) is in threaded connection with the rear end of the bidirectional screw rod (5-3) to form the screw rod nut mechanism; the middle part of the bidirectional screw rod (5-3) is provided with a torsion structure, and the torsion structure is used for inputting torque to the bidirectional screw rod (5-3) so as to drive the bidirectional screw rod (5-3) to rotate and drive the front nut (5-1) and the rear nut (5-2) to move relatively or oppositely.

8. The shield body articulated cylinder (2) protection device according to claim 7, wherein the torsion structure is a step shaft convexly arranged in the middle of the bidirectional screw rod (5-3), a through hole perpendicular to the axial direction of the bidirectional screw rod (5-3) is formed in the middle of the step shaft, and the through hole is used for inserting a handle (5-4) so as to apply torque to the bidirectional screw rod (5-3).

9. The shield body articulated cylinder (2) protection device according to claim 6, 7 or 8, wherein the insertion structure is a groove and a bump, and the groove wall of the groove is in clearance fit with the bump so as to adapt to the steering angles of the front shield part and the rear shield part of the shield machine.

10. The shield body articulated cylinder (2) protection device according to claim 6, 7 or 8, wherein the front bracket and the rear bracket are a plurality of support plates distributed at intervals along the circumference, and the support plates and the articulated cylinder (2) are uniformly distributed at intervals along the circumference of the shield component.

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