CN-224228686-U - Tunnel lining trolley positioning device

CN224228686UCN 224228686 UCN224228686 UCN 224228686UCN-224228686-U

Abstract

The utility model discloses a tunnel lining trolley positioning device which is arranged on a bottom bearing structure of a lining trolley and comprises a mounting platform, clamping assemblies, a force amplifying mechanism and a driving module, wherein the mounting platform is arranged on the bottom bearing structure and is in a suspension state relative to a track, the two clamping assemblies are symmetrically arranged on two sides of the axis of the track, each clamping assembly comprises clamping jaws, the force amplifying mechanism can amplify and transmit clamping force, the driving module is arranged on the mounting platform and is connected with the two clamping jaws through the force amplifying mechanism, the driving module converts output torque into clamping force multiplication through the force amplifying mechanism and transmits the clamping force to the clamping jaws, and when a clamping working condition is executed, the two clamping jaws form double-side synchronous clamping constraint on a track web. The tunnel lining trolley positioning device can assist the trolley in positioning and locking, and prevent the trolley from moving randomly.

Inventors

CHEN YUANYUAN
HE MU
LI JUN
XIE ZHE

Assignees

广州市北二环交通科技有限公司

Dates

Publication Date: 20260512
Application Date: 20250515

Claims (7)

1. The utility model provides a tunnel lining platform truck positioner which characterized in that sets up on the bottom bearing structure of lining platform truck, includes: The mounting platform is arranged on the bottom bearing structure and is in a suspended state relative to the track; The clamping assemblies are arranged on two sides of the track axis in a bilateral symmetry manner, and each clamping assembly comprises clamping jaws; the force amplifying mechanism can amplify and transmit the clamping force; The driving module is arranged on the mounting platform and is connected with the two clamping jaws through the force amplifying mechanism; The driving module converts output torque into clamping force through the force amplifying mechanism to multiply and convey the clamping force to the clamping jaws, and when the clamping working condition is executed, the two clamping jaws form double-side synchronous clamping constraint on the track web.
2. The tunnel lining trolley positioning apparatus of claim 1, wherein the force amplifying mechanism comprises a vertical guide slide, a first transmission pair, a second transmission pair, and a pressurizing rod group; the driving module can drive the vertical guide sliding block to lift vertically to the ground; The first transmission pair comprises a left parallel four-bar linkage, each bar is hinged to form a plane motion chain through a pin shaft, the upper end of each bar is hinged to the vertical guide sliding block, and the lower end of each bar is connected with the left clamping jaw; the second transmission pair comprises right-side parallel four-bar sets, and the transmission paths are symmetrically arranged and mirror-symmetrical; The pressurizing rod group comprises a left swing arm component and a right swing arm component, the left swing arm component and the right swing arm component are respectively hinged with the mounting platform through rotating shafts, and the lower end of the pressurizing rod group and the four-bar linkage group on the corresponding side form a moment transmission node; The axial displacement of the vertical guide sliding block is converted into the horizontal clamping displacement of the clamping jaw through the compound transmission of the four-bar linkage and the swing arm component.
3. The tunnel lining trolley positioning device according to claim 2, wherein the driving module comprises a rotary power source and a screw rod, the axis of the screw rod is perpendicular to the ground and is in threaded connection with the vertical guide sliding block, and the rotary power source is used for driving the screw rod to rotate clockwise or anticlockwise.
4. A tunnel lining trolley locating apparatus as claimed in claim 3, further comprising an anti-reverse mechanism connected to the output shaft of the rotary power source to prevent the output shaft from rotating anticlockwise.
5. The tunnel lining trolley positioning device according to claim 4, wherein the anti-reversion mechanism comprises a ratchet plate, a pawl and a pneumatic unlocking unit, the ratchet plate is sleeved and fixed on the output shaft, the top end of the pawl is hinged to the mounting platform, when the bottom end of the pawl is inserted between two ratchets of the ratchet plate, the ratchet plate can be prevented from rotating anticlockwise, the pneumatic unlocking unit is connected with all the pawls, and can drive all the pawls to be separated from the corresponding ratchet plate simultaneously.
6. The tunnel lining trolley positioning device according to claim 5, wherein the pneumatic unlocking unit comprises an inflating device and a jacking air bag, the jacking air bag is arranged on the mounting platform and is close to the pawl, the inflating device is used for inflating the jacking air bag, and when the inflating device is in an inflating state, the pawl can be lifted to enable the pawl to be separated from the ratchet plate.
7. The tunnel lining trolley locating device of claim 1, wherein the working surface of the gripping jaw is provided with a non-slip mat.

Description

Tunnel lining trolley positioning device Technical Field The utility model relates to the technical field of tunnel construction, in particular to a positioning device for a tunnel lining trolley. Background The tunnel lining trolley is special equipment which is necessary to be used in secondary lining in the tunnel construction process and is used for the concrete lining construction of the inner wall of the tunnel. Mainly comprises a simple lining trolley, a full-hydraulic automatic walking lining trolley and a net frame type lining trolley. The construction process flow of the tunnel lining trolley comprises the following steps: 1. The track installation, namely determining an installation reference, paving a track, and ensuring that the height, center distance, elevation and the like of the track meet design requirements; 2. And (3) the trolley walks and is in place, namely detecting whether the structures of all parts are in place, checking whether the bolt connection is firm, performing preliminary debugging, then moving the trolley onto a track, and locking the walking wheels after the trolley is in place. 3. And (3) standing a mould: and operating the hydraulic station, adjusting the shape of the template to meet the construction requirement, and ensuring that the center line of the template coincides with the center line of the tunnel. In the prior art, the trolley positioning system has obvious technical bottleneck that a travelling mechanism is braked by a single mechanical hub locking device, and under the working condition that the longitudinal slope of a tunnel exceeds 5% of an inclined working surface, the axial sliding moment generated by gravity components of a trolley body (the dead weight is generally more than 50 t) breaks through the static friction threshold of a traditional braking structure, so that the trolley is at risk of moving randomly in construction engineering. Disclosure of utility model Aiming at the defects existing in the prior art, the technical problem to be solved by the utility model is to provide the tunnel lining trolley positioning device which can assist in positioning and locking the trolley and prevent the tunnel lining trolley positioning device from moving randomly. In order to achieve the purpose, the utility model is realized by the following technical scheme that the positioning device of the tunnel lining trolley is arranged on a bottom bearing structure of the lining trolley and comprises: The mounting platform is arranged on the bottom bearing structure and is in a suspended state relative to the track; The clamping assemblies are arranged on two sides of the track axis in a bilateral symmetry manner, and each clamping assembly comprises clamping jaws; the force amplifying mechanism can amplify and transmit the clamping force; The driving module is arranged on the mounting platform and is connected with the two clamping jaws through the force amplifying mechanism; The driving module converts output torque into clamping force through the force amplifying mechanism to multiply and convey the clamping force to the clamping jaws, and when the clamping working condition is executed, the two clamping jaws form double-side synchronous clamping constraint on the track web. Further, the force amplifying mechanism comprises a vertical guide sliding block, a first transmission pair, a second transmission pair and a pressurizing rod group; the driving module can drive the vertical guide sliding block to lift vertically to the ground; The first transmission pair comprises a left parallel four-bar linkage, each bar is hinged to form a plane motion chain through a pin shaft, the upper end of each bar is hinged to the vertical guide sliding block, and the lower end of each bar is connected with the left clamping jaw; the second transmission pair comprises right-side parallel four-bar sets, and the transmission paths are symmetrically arranged and mirror-symmetrical; The pressurizing rod group comprises a left swing arm component and a right swing arm component, the left swing arm component and the right swing arm component are respectively hinged with the mounting platform through rotating shafts, and the lower end of the pressurizing rod group and the four-bar linkage group on the corresponding side form a moment transmission node; The axial displacement of the vertical guide sliding block is converted into the horizontal clamping displacement of the clamping jaw through the compound transmission of the four-bar linkage and the swing arm component. Further, the driving module comprises a rotary power source and a screw rod, wherein the axis of the screw rod is perpendicular to the ground and is in threaded connection with the vertical guide sliding block, and the rotary power source is used for driving the screw rod to rotate clockwise or anticlockwise. Further, the anti-reversion mechanism is connected with the output shaft of the rotary power source and can prevent