CN-121976584-A - Longitudinal chain type thin-wall underground continuous wall slot milling machine capable of walking and synchronous slot milling

CN121976584ACN 121976584 ACN121976584 ACN 121976584ACN-121976584-A

Abstract

The invention relates to the technical field of underground continuous wall construction equipment, in particular to a longitudinal chain type thin-wall underground continuous wall slot milling machine which comprises a crawler type lower chassis, an upper chassis capable of horizontally rotating, a pure electric power system, a hinged mast, a propelling base/sliding frame, a tower lifting oil cylinder, a longitudinal chain type cutting system and a pair of pressurizing oil cylinders. The cutting system fixing frame is slidably arranged on the mast, the driving motor, the driving gear and the driven gear form a vertical closed cutting ring, and the pressurizing oil cylinder provides lifting and descending pressure for the fixing frame. The whole vehicle controller cooperates with the crawler belt walking, the rotation, the chain cutting, the pushing oil cylinder and the pressurizing oil cylinder to realize two modes of walking while milling grooves or static pushing milling grooves, and is suitable for construction of thin-wall underground continuous walls in narrow spaces of cities and environment-friendly sensitive areas.

Inventors

WANG TAO
GAN WEIPING
ZHANG FENG
DONG HONG

Assignees

浙江金祖环境治理设备股份有限公司

Dates

Publication Date: 20260505
Application Date: 20251009

Claims (11)

1. A longitudinal chain type thin-wall underground continuous wall slot milling machine is characterized by comprising: A crawler-type lower chassis; an upper chassis horizontally rotatable relative to the lower chassis; A pure electric power system; a mast hinged to the upper chassis; a propulsion base/carriage driven by the propulsion cylinder and movable back and forth on the upper chassis rail; The tower lifting oil cylinder is hinged between the propulsion base and the mast and is used for driving the mast to rise or fall down; the longitudinal chain type cutting system comprises a chain saw body, a driving motor, a driving gear, a driven gear and a fixing frame, wherein the fixing frame is slidably arranged on a mast and carries the driving motor and the driving gear; the cylinder body is hinged to the mast, the piston rod is hinged to the fixing frame, and the cylinder body is used for driving the fixing frame to lift along the mast and providing downward pressure for the chain saw body; The whole vehicle controller is used for cooperatively controlling crawler travel, upper chassis rotation, chain cutting, pushing oil cylinders and pressurizing oil cylinders, and realizing two modes of groove milling while traveling or groove milling by static pushing.
2. The longitudinal chained thin-wall underground diaphragm wall slot milling machine of claim 1, wherein the pressurizing oil cylinder is connected with the VCU through a proportional valve, and the down force can be adjusted in real time in the lifting process to match the cutting resistance of different strata.
3. The longitudinal chain type thin-wall underground continuous wall grooving machine according to claim 1 or 2, wherein the fixing frame slides along the mast guide rail under the drive of the pressurizing oil cylinder, so that the chain saw body continuously lifts and lowers in the cutting process to complete full-depth once wall forming.
4. The longitudinal chain type thin-wall underground continuous wall slot milling machine of claim 1, wherein the pushing base/carriage is independently pushed by the pushing oil cylinder when the crawler belt stops to realize small-amplitude slot milling feeding, and is synchronously pushed with the crawler belt speed when the crawler belt walks to realize continuous walking slot milling.
5. The longitudinal chain type thin-wall underground diaphragm wall slot milling machine of claim 1, wherein the lifting cylinder drives the mast to rotate within the range of 0-90 degrees, so that the whole machine is rapidly switched between a transportation state and an operation state.
6. The longitudinal chain type thin-wall underground continuous wall grooving machine according to claim 1, wherein the upper chassis realizes 360-degree continuous rotation through a horizontal slewing bearing, so that the grooving machine can finish adjacent grooving section cutting without moving a crawler belt.
7. The longitudinal chain type thin-wall underground continuous wall slot milling machine of claim 1, wherein the pure electric power system is an energy source of the whole machine, and drives the crawler to walk, rotate, cut, push, lift and pressurize, thereby realizing zero-emission low-noise operation.
8. The longitudinal chain type thin-wall underground diaphragm wall slot milling machine of claim 1, wherein the longitudinal chain type cutting system forms a vertical closed cutting ring through a driving gear and a driven gear, the linear speed of a chain is linked with the advancing speed or the walking speed of a crawler belt to realize continuous cutting, the chain saw body comprises a plate type frame, a driven wheel and a driven wheel frame, the plate type frame is formed by splicing a plurality of sections of box bodies, adjacent sections are connected through a high-strength bolt and a coaxial quick-connection joint, a cable, a gas transmission pipeline and a slurry transmission pipeline are arranged in the adjacent sections, the joint is kept smooth after splicing, the center of the driven wheel frame is provided with a gas outlet/liquid outlet, an external air compressor or a slurry pump is connected through an internal pipeline of the frame and used for carrying out gas lifting slag discharge or high-pressure flushing at the slot bottom to form a cutting-guiding-flushing integrated cutter row, the plate type frame after the length splicing is inserted into a fixed frame, the front end of the plate type frame is connected with a driving motor of a power head part through a tensioning cylinder, and the rear end of the plate type frame is connected with the driven wheel through the wheel frame.
9. The longitudinal chain type thin-wall underground continuous wall slot milling machine according to claim 1 or 8, wherein guide keys and guide plates are arranged in front of and behind the chain saw body and are in sliding fit with the inner wall of the finished slot section to form a three-point guide structure for keeping the perpendicularity of the slot section, a displacement sensor is embedded in the guide keys and forms a perpendicularity detection unit together with an on-board IMU, and when the perpendicularity deviation is detected to exceed a set threshold value, the VCU automatically adjusts the differential speed of the propulsion cylinder to realize closed-loop correction.
10. The longitudinal chain type thin-wall underground continuous wall slot milling machine according to claim 9 is characterized in that the whole machine is in a modularized design, a mast can be laid down and a pushing base can be locked during transportation, the whole machine is loaded and transferred, and preparation for rising, aligning and cutting is completed before operation, so that quick construction of a narrow space in a city is realized.
11. A method of performing walk-while-milling or stationary push-through milling using the slot milling machine of any one of claims 1 to 10, comprising: S1, a whole Vehicle Controller (VCU) selects a working mode according to construction site conditions: S2, in a mode of simultaneously walking and milling grooves, VCU synchronously adjusts the walking speed of the crawler belt, the linear speed of a chain and the pushing speed of a pushing base/a sliding frame, so that a longitudinally arranged chain type cutting system of the crawler belt lower chassis completes groove section excavation in a continuous walking process, and one-time wall forming is realized; s3, stopping crawler travel by the VCU, driving the propelling base/carriage to advance only by the propelling oil cylinder, and simultaneously controlling the pressurizing oil cylinder to apply a downward pressure to the fixed frame, so that the longitudinal chain type cutting system finishes small-amplitude milling groove feeding in a static state; In the two modes, the VCU adjusts the horizontal rotation angle of the upper chassis, the cutting speed of the chain and the downward pressure of the pressurizing oil cylinder in real time so as to adapt to different stratum conditions and groove segment track requirements.

Description

Longitudinal chain type thin-wall underground continuous wall slot milling machine capable of walking and synchronous slot milling Technical Field The invention relates to the technical field of underground diaphragm wall construction equipment, in particular to longitudinal chain type underground diaphragm wall slot milling equipment, and specifically relates to a longitudinal chain type thin-wall underground diaphragm wall slot milling machine capable of walking to synchronously mill slots. Background The underground diaphragm wall is used as an important component of deep foundation pit support and underground structure, and the construction quality and efficiency of the underground diaphragm wall are directly related to the safety and economy of the whole underground engineering. Traditional underground diaphragm wall construction equipment, such as hydraulic grab bucket, double-wheel slot milling machine and TRD (blast furnace top-level device) construction equipment, is widely applied to projects such as deep foundation pits, subways, tunnels and the like, but has the following problems in the actual use process: 1. equipment is huge and difficult to transfer: The traditional TRD equipment has complex integral structure and huge size, needs a large trailer during transportation, has higher requirements on road width and bearing capacity of a construction site, and is difficult to adapt to the construction requirements of narrow sites or space-limited areas of cities. 2. The construction efficiency is limited, and the operation mode is single: most traditional equipment adopts a construction mode of 'sectional excavation and sectional wall forming', milling grooves and equipment running are independent, continuous operation cannot be realized, construction efficiency is low, and construction period is long. 3. Has great influence on the environment: the traditional equipment has large noise and strong vibration in the construction process, and needs a large amount of auxiliary equipment (such as an air compressor, a mud station and the like), so that the influence on the surrounding environment is large, and the construction of urban sensitive areas is not facilitated. 4. The structure is complex, and the maintenance cost is high: The traditional equipment has complex structure, numerous parts and high requirements for cooperation among systems, so that the equipment has higher failure rate, higher maintenance cost and higher technical level requirements for operators. 5. And the construction of the thin-wall continuous wall is not suitable: along with the continuous deep development of urban underground space, the thickness requirement on the underground continuous wall is thinner and thinner, and the traditional equipment is difficult to realize accurate excavation of the thin-wall groove section due to structural limitation, so that the construction quality is difficult to guarantee. In recent years, with the increasing demand for urban underground space development, the market demands for miniaturized, efficient and environment-friendly underground continuous wall construction equipment are increasing. Therefore, a novel underground diaphragm wall slot milling device with compact structure, flexible operation, high construction efficiency and strong adaptability is needed to meet the requirements of complex working conditions such as narrow space in a city, thin-wall slot sections, environment-friendly construction and the like. Disclosure of Invention The invention aims to provide a longitudinal chain type thin-wall underground continuous wall slot milling machine capable of walking and synchronous slot milling, which solves the problems of large volume, difficult transition, walking-slot milling separation, low precision of thin-wall slot sections and poor environmental protection of the conventional equipment. In order to achieve the above object, the present invention is achieved by: a longitudinally-arranged chain type thin-wall underground continuous wall slot milling machine, comprising: A crawler-type lower chassis; an upper chassis horizontally rotatable relative to the lower chassis; A pure electric power system; a mast hinged to the upper chassis; a propulsion base/carriage driven by the propulsion cylinder and movable back and forth on the upper chassis rail; The tower lifting oil cylinder is hinged between the propulsion base and the mast and is used for driving the mast to rise or fall down; the longitudinal chain type cutting system comprises a chain saw body, a driving motor, a driving gear, a driven gear and a fixing frame, wherein the fixing frame is slidably arranged on a mast and carries the driving motor and the driving gear; the cylinder body is hinged to the mast, the piston rod is hinged to the fixing frame, and the cylinder body is used for driving the fixing frame to lift along the mast and providing downward pressure for the chain saw body; The whole vehicle controller is