CN-224228676-U - Electrohydraulic series driving support shoe and heading machine

CN224228676UCN 224228676 UCN224228676 UCN 224228676UCN-224228676-U

Abstract

The utility model discloses an electrohydraulic series driving supporting shoe and a heading machine, which solve the problems of complex hydraulic pipeline and low long-distance liquid supply efficiency caused by the fact that the supporting shoe is driven only by hydraulic pressure in the prior art. The utility model discloses an electrohydraulic series driving support shoe, which comprises a support shoe main body and a support outer shell, wherein a hydraulic cylinder is arranged between the support shoe main body and the support outer shell, a motor-driven lifting mechanism is arranged in the support outer shell, and a lifting piece of the lifting mechanism is connected with the hydraulic cylinder to form an electrohydraulic series mechanism. According to the utility model, the electric drive system with the self-locking function is adopted to control the extension and retraction of the supporting shoe, the hydraulic drive system only controls the application and removal of the pressure between the supporting shoe and the rock wall, the long-distance liquid supply quantity can be effectively reduced, and the problems of complicated hydraulic pipeline and low long-distance liquid supply efficiency caused by the fact that the traditional supporting shoe is only driven by hydraulic pressure are solved; the provided monitoring control system can also effectively avoid complex problems of supporting boot instability and the like caused by failure of a hydraulic system, and improves the construction efficiency.

Inventors

WEI YINGHAO
WANG SHUTAI
XING JUNBO
ZHANG YAHUI
YANG HERAN
FENG CHAOQIANG

Assignees

中铁工程装备集团有限公司

Dates

Publication Date: 20260512
Application Date: 20250708

Claims (10)

1. The electrohydraulic series driving support shoe comprises a support shoe main body (3-18) and a support outer shell (3-1) and is characterized in that a hydraulic cylinder (3-8) is arranged between the support shoe main body (3-18) and the support outer shell (3-1), a motor-driven lifting mechanism is arranged in the support outer shell (3-1), and lifting pieces of the lifting mechanism are connected with the hydraulic cylinder (3-8) to form the electrohydraulic series mechanism.
2. The electro-hydraulic series driving support shoe according to claim 1, wherein the lifting mechanism comprises a lifting piece and a transmission piece, the transmission piece is respectively in transmission connection with the motor (3-3) and the lifting piece, and the motor (3-3) drives the lifting piece to lift through the transmission piece.
3. The electrohydraulic series driving support shoe of claim 2 is characterized in that the lifting piece is a lifting sleeve (3-13), the lifting sleeve (3-13) is in sliding fit with a sliding groove formed in a supporting outer shell (3-1), the top of the lifting sleeve (3-13) is connected with a cylinder barrel (3-8-1) of a hydraulic cylinder (3-8), internal threads are formed in the lifting sleeve (3-13), the transmission piece comprises a screw rod (3-12), the screw rod (3-12) is in threaded fit with the lifting sleeve (3-13), and the screw rod (3-12) is in transmission connection with a motor (3-3).
4. The electrohydraulic series driving support shoe according to claim 3, wherein the bottom of the screw rod (3-12) is connected with a driven bevel gear (3-2), the motor (3-3) is arranged outside the supporting outer shell (3-1), the output shaft (3-4) of the motor (3-3) is provided with a coupler (3-5), one end of a transmission shaft (3-6) of the coupler (3-5) extending into the supporting outer shell (3-1) is provided with a driving bevel gear (3-7), and the driving bevel gear (3-7) is meshed with the driven bevel gear (3-2).
5. The electrohydraulic series driving support shoe of claim 4 wherein a support base (3-9) is arranged in the support outer shell (3-1), the bottom of the screw (3-12) is connected with the support base (3-9) through a rolling bearing (3-10), a mounting hole is arranged in the middle of the driven bevel gear (3-2), and the screw (3-12) passes through the mounting hole and is connected with the driven bevel gear (3-2) through a key.
6. The electrohydraulic series driving support shoe according to claim 3, wherein the motor (3-3) is arranged in the support outer shell (3-1), a coupler (3-5) is arranged on an output shaft (3-4) of the motor (3-3), and the coupler (3-5) is connected with the bottom of the screw (3-12).
7. The electro-hydraulic series driving support shoe according to any one of claims 3-6, wherein a top disc (3-15) is arranged at the top of the lifting sleeve (3-13), a connecting plate (3-16) is arranged at the bottom of a cylinder barrel (3-8-1) of the hydraulic cylinder (3-8), the connecting plate (3-16) is fixed on the top disc (3-15), a piston (3-8-2) of the hydraulic cylinder (3-8) is connected with a support shoe main body (3-18), and a pressure sensor (3-17) is arranged between the piston (3-8-2) and the support shoe main body (3-18).
8. The electrohydraulic series driving support shoe of claim 7 wherein the cross section of the lifting sleeve (3-13) is elliptical or rectangular or circular, the cross section of the sliding groove on the supporting outer shell (3-1) is correspondingly elliptical or rectangular or circular, when the cross section of the lifting sleeve (3-13) and the cross section of the sliding groove are circular, the outer wall of the lifting sleeve (3-13) is provided with a sliding block (3-14), and the sliding block (3-14) is matched with a vertical guide groove arranged on the inner wall of the sliding groove.
9. A heading machine characterized by comprising an electrohydraulic series drive support shoe (3) according to any one of claims 1 to 8.
10. The heading machine of claim 9, wherein the electrohydraulic series driving support shoes (3) are arranged on a heading machine main machine (1), and at least two electrohydraulic series driving support shoes (3) are symmetrically arranged on the heading machine main machine (1) left and right.

Description

Electrohydraulic series driving support shoe and heading machine Technical Field The utility model relates to the technical field of heading machines, in particular to a supporting shoe structure. Background In the construction process of the full-section hard rock tunnel boring machine, the traditional supporting shoe is driven by a hydraulic system only, so that the hydraulic pipeline arrangement is complicated and redundant. The extension of the pipeline not only faces the problems of high laying difficulty, limited space and the like, but also needs to cope with a series of serious challenges such as pressure loss, flow fluctuation, system response delay and the like in the aspect of long-distance liquid supply, and has great challenges for a development machine needing long-distance liquid supply. In the prior art, as the outer arc plate of the supporting shoe is replaced by the prior art with the publication number CN214997652U, the operation difficulty is reduced, the cost is saved, the publication number CN114593098B is provided with a secondary unfolding mode and a tertiary unfolding mode, the contact area of the supporting shoe and surrounding rock is changed according to the surrounding rock condition, the surrounding rock damage caused by overlarge local stress is avoided, and the publication number CN113606205B is provided with the structure that the pressure of a supporting shoe cylinder is uniformly loaded on the inner wall of the surrounding rock through a distributed active plunger, so that the stress concentration is effectively avoided. The aim of improving the shoe supporting effect is achieved by improving the shoe supporting structure, but the traditional hydraulic driving mode is not changed. The patent CN 114592873A discloses a full-circumference adjustable distributed TBM rear supporting device, which adopts a hydraulic cylinder and an electric mechanism, but the purpose is how to realize full support around the hydraulic cylinder. Therefore, the design of the electrohydraulic series driving support shoe reduces long-distance liquid supply on the premise of ensuring the travel of the support shoe, so that the development machine suitable for the long-distance liquid supply is necessary. Disclosure of utility model Aiming at the defects in the background technology, the utility model provides an electrohydraulic series driving supporting shoe and a heading machine, which solve the problems of complex hydraulic pipeline and low long-distance liquid supply efficiency caused by the fact that the supporting shoe is driven only by hydraulic pressure in the prior art. The technical scheme is that the electrohydraulic series driving support shoe comprises a support shoe main body and a support outer shell, wherein a hydraulic cylinder is arranged between the support shoe main body and the support outer shell, a motor-driven lifting mechanism is arranged in the support outer shell, and a lifting piece of the lifting mechanism is connected with the hydraulic cylinder to form the electrohydraulic series mechanism, so that long-distance liquid supply can be effectively reduced, and the problems of complex hydraulic pipeline, low long-distance liquid supply efficiency and the like caused by the fact that the traditional support shoe only depends on hydraulic driving are solved. Meanwhile, a series of complex problems caused by failure of a hydraulic system, such as instability of supporting shoes, stagnation of tunneling operation and the like, can be effectively avoided. Further preferably, the lifting mechanism comprises a lifting piece and a transmission piece, wherein the transmission piece is respectively in transmission connection with the motor and the lifting piece, and the motor drives the lifting piece to lift through the transmission piece. The transmission part converts the rotation of the motor into the up-and-down lifting motion of the lifting part. Further preferably, the lifting part is a lifting sleeve, the lifting sleeve is in sliding fit with a sliding groove formed in the supporting outer shell, the top of the lifting sleeve is connected with a cylinder barrel of the hydraulic oil cylinder, internal threads are arranged in the lifting sleeve, and the transmission part comprises a screw rod which is in threaded fit with the lifting sleeve and is in transmission connection with the motor. The motor drives the screw rod to rotate, and the screw rod rotates to drive the lifting sleeve to move up and down, so that the lifting action of the lifting sleeve is realized. As an implementation mode, the bottom of the screw is connected with a driven bevel gear, the motor is arranged outside the supporting outer shell, a coupler is arranged on an output shaft of the motor, a driving bevel gear is arranged at one end of a transmission shaft of the coupler, which extends into the supporting outer shell, and the driving bevel gear is meshed with the driven bevel gear. Further preferably, a