CN107415059B

CN107415059B - Knife rest hoisting device and double round slot milling machine

Info

Publication number: CN107415059B
Application number: CN201710855967.1A
Authority: CN
Inventors: 郑文; 倪坤
Original assignee: Jiangsu XCMG Construction Machinery Institute Co Ltd
Current assignee: Jiangsu XCMG Construction Machinery Institute Co Ltd
Priority date: 2017-09-21
Filing date: 2017-09-21
Publication date: 2023-10-03
Anticipated expiration: 2037-09-21
Also published as: CN107415059A

Abstract

The application relates to a tool rest lifting device and a double-wheel slot milling machine, wherein the tool rest lifting device comprises a balance frame (1), a lifting mechanism and first and second fluid pipes used for providing working fluid for an actuating mechanism on a tool rest (4), the lifting mechanism is used for driving the tool rest (4) to move up and down, the balance frame (1) is rotatably connected with the lifting mechanism through a first axis (21), one ends of the first and second fluid pipes are respectively connected to the balance frame (1), and the balance frame (1) can rotate around the first axis (21) independently when unbalanced force is applied. In the process that the lifting mechanism drives the tool rest to vertically move, unbalanced acting force applied by the first fluid pipe and the second fluid pipe to the balance frame can not drive the lifting mechanism to horizontally deflect, and the tool rest deflection caused by different tension of the first fluid pipe and the second fluid pipe to the tool rest can be avoided, so that the tool rest can vertically move downwards to cut in the construction process, and the construction quality is improved.

Description

Knife rest hoisting device and double round slot milling machine

Technical Field

The application relates to the technical field of engineering machinery, in particular to a tool rest lifting device and a double-wheel slot milling machine.

Background

The double-wheel slot milling machine is applied to the rock-entering slot forming construction of the underground diaphragm wall, when the double-wheel slot milling machine is used for slot milling operation, the engine drives the oil pump to supply oil, firstly, the cutter rest is adjusted to be aligned to the slot forming position, and then, the steel wire rope is released to lower the cutter rest; the main machine is connected with the tool rest through a hydraulic oil pipe, so as to supply oil to the milling wheel motor to drive the milling wheel to rotationally cut rock and soil; meanwhile, the hydraulic oil pipe supplies oil to the other motor to drive the slurry pump to rotate, and slurry mixtures such as broken stone, dregs and the like milled by the milling wheel are discharged to the ground through the slurry oil pipe.

Along with the lowering of the cutter frame, the rock and soil are stripped by the milling wheel, a hollow area is formed below the cutter frame, at the moment, a steel wire rope is required to be released, and the cutter frame is lowered to continue milling the rock and soil; in the process of lowering the tool rest, in order to ensure that the milling wheel driving motor and the slurry pump motor on the tool rest work normally and smooth slurry discharge, the hydraulic hose connecting the tool rest and the main machine and the slurry hose are required to be kept in a tight state at all times.

For the present double-wheel slot milling machine, a steel wire rope which is put down by a lifting tool rest is suspended at the middle position above the tool rest through a pulley assembly, a hydraulic hose for providing a power source for a motor on the tool rest and a mud hose for conveying rock-soil mud mixed liquid are respectively and independently arranged at the left side and the right side above the tool rest. Because the hydraulic hoses and the slurry hoses on the left side and the right side have different pulling forces on the tool rest in the construction process, the tool rest is often inclined, and the slotted hole is inclined.

Disclosure of Invention

The application aims to provide a tool rest lifting device and a double-wheel groove milling machine, which can prevent the tool rest from tilting when moving up and down in the construction process.

In order to achieve the above object, a first aspect of the present application provides a tool rest lifting device, which includes a balancing stand, a lifting mechanism, and a first fluid pipe and a second fluid pipe for providing working fluid to an actuator on the tool rest, wherein the lifting mechanism is used for driving the tool rest to move up and down, the balancing stand is rotatably connected with the lifting mechanism by a first axis, and one end of each of the first fluid pipe and the second fluid pipe is respectively connected to the balancing stand, so that the balancing stand can be driven to rotate around the first axis independently when unbalanced force is applied.

Further, the lifting mechanism is a pulley assembly, the pulley assembly comprises a pulley, the pulley is rotatably connected with the balancing stand through a first axis, and the tool rest is connected with the pulley.

Further, the pulley assembly further comprises a force transmission piece, the pulley is arranged inside the balance frame, the top of the balance frame is provided with a through groove, and the force transmission piece can pass through the through groove and then bypass the pulley to be connected.

Further, the blade carrier lifting device further includes a blade carrier suspension member having a first end rotatably coupled to the counter balance with a second axis, the second end coupled to the blade carrier, the second axis being parallel to the first axis.

Further, the first axis coincides with the second axis.

Further, the balance frame, the tool rest suspension member and the elevating mechanism are sequentially arranged from outside to inside along the first axis.

Further, the tool holder is rotatably coupled to the second end of the tool holder suspension member with a third axis that is perpendicular to the first axis.

Further, one end of each of the first fluid pipe and the second fluid pipe is connected to the top of the balance frame.

Further, an on-off valve is arranged at the position where the first fluid pipe and/or the second fluid pipe are/is connected with the balance frame and is used for switching on or switching off the flow of fluid in the first hydraulic oil pipe.

Further, the first fluid pipe and the second fluid pipe are respectively positioned at the left side and the right side of the first axis.

Further, the tool rest lifting device further comprises a traction piece, one end of the traction piece is connected with the balance frame, and the traction piece is used for transferring the tension of the balance frame acting on the fluid pipe to the traction piece.

In order to achieve the above object, a second aspect of the present application provides a dual-wheel slot milling machine, which includes the tool rest lifting device described in the above embodiment.

Further, the first fluid pipe is a first hydraulic oil pipe for providing hydraulic oil of the host machine to the milling wheel motor and the slurry pump motor on the tool rest, and the second fluid pipe is a slurry pipe for discharging the constructed slurry mixture to the host machine.

Further, a hydraulic oil pipe and a slag discharging pipe are connected between the balance frame and the tool rest, the hydraulic oil pipe is communicated with the first hydraulic oil pipe, the slag discharging pipe is communicated with the slurry pipe, and the length allowance of the hydraulic oil pipe and the slag discharging pipe exceeds the inclination amount of the balance frame.

Based on the technical scheme, the tool rest lifting device comprises the balance frame and the lifting structure, wherein the lifting mechanism is used for driving the tool rest to move up and down, the balance frame is rotatably connected with the lifting mechanism, which is equivalent to transitional connection of the first fluid pipe and the second fluid pipe to the tool rest, in the process that the lifting mechanism drives the tool rest to move vertically, if the first fluid pipe and the second fluid pipe apply unbalanced acting force to the balance frame, the balance frame can rotate around the first axis independently and can not drive the lifting mechanism to deflect, and the tool rest deflection caused by different tension of the first fluid pipe and the second fluid pipe to the tool rest can be avoided, so that the tool rest can move vertically downwards in the construction process to cut, and the construction quality is improved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute a limitation on the application. In the drawings:

FIG. 1 is a schematic view of the structure of one embodiment of the tool holder lift device of the present application;

FIG. 2 is a cross-sectional view of one embodiment of the tool holder lift device of the present application;

fig. 3 is a schematic view of the structure of the tool rest lifting device connected with the tool rest.

Description of the reference numerals

1. A balancing stand; 2. a pulley assembly; 3. a tool holder suspension member; 4. a tool holder; 5. a slurry pipe; 6. a force transmitting member; 7. a first hydraulic oil line; 11. installing a joint; 12. a through groove; 13. a support; 14. an on-off valve; 21. a first axis; 21', a first axis; 22. a connecting piece; 31. a third axis; 32. a rotating shaft; 41. the second hydraulic oil pipe; 42. a slag discharge pipe; 71. a pulling member.

Detailed Description

The present application is described in detail below. In the following paragraphs, the different aspects of the embodiments are defined in more detail. Aspects so defined may be combined with any other aspect or aspects unless explicitly stated to be non-combinable. In particular, any feature or features may be combined with one or more other features may be desired and advantageous.

The terms "first," "second," and the like in the present application are merely for convenience of description to distinguish between different constituent components having the same name, and do not denote a sequential or primary or secondary relationship.

In the description of the present application, it should be understood that the terms "length," "width," "height," "upper," "lower," "left," and "right," etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present application, and do not indicate or imply that the device in question must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the scope of the present application.

Referring to fig. 1 to 3, the present application provides a tool rest lifting device for lifting a tool rest 4, comprising a balance frame 1, a lifting mechanism, a first fluid pipe and a second fluid pipe, wherein the first fluid pipe and the second fluid pipe are used for providing working fluid for an actuating mechanism (such as a pump or a motor) on the tool rest 4. Preferably, the first fluid tube and the second fluid tube are hoses, facilitating follow-up when the carriage 4 is lifted. For example, in a two-wheel slot milling machine, the first fluid pipe is the first hydraulic oil pipe 7 and the second fluid pipe is the mud pipe 5.

The lifting mechanism is connected with the tool rest 4 and is used for driving the tool rest 4 to move up and down in a linear mode, and the balance frame 1 is rotatably connected with the lifting mechanism by taking the first axis 21 as the center. One end of each of the first fluid pipe and the second fluid pipe is connected to the balance frame 1, and the other end of each of the first fluid pipe and the second fluid pipe is connected to the host machine, so as to supply working fluid in the host machine to the actuating mechanism on the tool rest 4.

During the cutting operation of the tool holder 4 being lowered, the first fluid pipe and the second fluid pipe also move downwards together with the balancing stand 1, during which the tension forces of the first fluid pipe and the second fluid pipe on the balancing stand 1 may not be exactly the same, the balancing stand 1 can be rotated solely around the first axis 21 when being subjected to unbalanced forces, and the lifting mechanism and the tool holder 4 will not be deflected accordingly.

The structure is equivalent to that the first fluid pipe and the second fluid pipe are connected to the tool rest 4 in a transitional manner through the balance frame 1, so that unbalanced force of the first fluid pipe and the second fluid pipe in the working process is not transmitted to the tool rest 4, and the tool rest can vertically move downwards to cut in the construction process, so that the construction quality is improved.

Preferably, as shown in fig. 3, the first fluid tube and the second fluid tube are located on the left and right sides of the first axis 21, respectively. This makes it possible to balance the forces on both sides of the first axis 21 and to minimize the amount of tilting of the gimbal 1.

In addition, one end of each of the first fluid pipe and the second fluid pipe is respectively connected to the top of the balance frame 1, so that the fluid pipes can be ensured to be kept in a vertical state as much as possible, the resistance of the fluid in the flowing process is reduced, and the working fluid is stably supplied to the actuating mechanism on the tool rest 4. Alternatively, the fluid pipe may be connected to the side of the balance frame 1.

Further, the first fluid pipe and/or the second fluid pipe is/are provided with an on-off valve 14, such as a ball valve or a solenoid valve, etc., at a position where the first fluid pipe and/or the second fluid pipe is/are connected to the balance frame 1, for switching on or switching off the flow of fluid in the fluid pipe. When the transportation is needed, the on-off valve 14 can be closed first, and then the first fluid pipe and the second fluid pipe are removed, so that the leakage of the fluid in the fluid pipe can be prevented, and meanwhile, the pollution of the fluid in the transportation process can be prevented.

Further, the tool rest lifting device can further comprise a pulling piece 71, one end of the pulling piece 71 is connected with the balance frame 1, the other end of the pulling piece is connected with the host machine, and the pulling piece is used for transferring the pulling force of the balance frame 1 on the fluid pipe to the pulling piece 71, and the pulling piece 71 plays a main bearing role and prevents the fluid pipe from being damaged in the operation process.

The lifting mechanism in the tool rest lifting device can take various forms. Preferably, as shown in fig. 1, the lifting mechanism may be a pulley assembly 2, the pulley assembly 2 comprising a pulley and a force-transmitting member 6, the pulley being rotatably connected, e.g. pivotally connected, to the balancing stand 1 with a first axis 21, the blade carrier 4 being connected to the pulley. The force transmission piece 6 can select a steel wire rope, the first end of the steel wire rope is hung on the host machine, the second end of the steel wire rope extends upwards after bypassing the pulley, and the second end of the steel wire rope can be driven to move through the driving mechanism so as to realize the lifting movement of the tool rest 4.

The pulley assembly 2 can be used for increasing the movement stroke of the tool rest 4 by arranging a longer steel wire rope, and can be suitable for occasions with deeper operation positions or occasions with longer effective operation stroke, and has simple structure, and when the steel wire rope needs to be transported or stored, the steel wire rope can be retracted to occupy smaller space. In addition, the lifting mechanism can also be a linear guide rail mechanism or the like.

Preferably, as shown in fig. 1, the pulley is arranged inside the balance frame 1, the top of the balance frame 1 is provided with a through groove 12, and the force transmission piece 6 can pass through the through groove 12, pass through the through groove 12 after passing around the pulley to change the direction, and return to the host machine.

On the basis of this, as shown in fig. 1, the tool rest lifting device of the present application may further comprise a tool rest suspension member 3, a first end of the tool rest suspension member 3 being rotatably connected to the counter balance 1 with a second axis 21', the second end being connected to the tool rest 4, the second axis 21' being parallel to the first axis 21. The holder 4 is connected with the pulley through the holder suspension member 3, and the holder suspension member 3 can facilitate the installation of the holder 4. The upper and lower ends of the pulley are connected to the balance frame 1 and the holder suspension member 3 through the connecting members 22, respectively.

Preferably, the first axis 21 coincides with the second axis 21'. This way, the structural form can be simplified, and the axes of rotation of the balance frame 1, the pulley assembly 2, and the holder suspension member 3 are made coincident. Moreover, when the double-wheel slot milling machine provided with the tool rest lifting device is used for underwater operation, the rotating part is required to be sealed, and only one sealing structure is required to be arranged.

As shown in fig. 2, the balance frame 1, the blade holder suspension member 3, and the elevating mechanism are disposed in this order from the outside to the inside along the direction of the first axis 21. Specifically, the upper portion of balance frame 1 is equipped with the mounting panel, and the one end of fluid pipe is connected on the mounting panel, and the intermediate zone of mounting panel lower part is equipped with two curb plates, is connected through a plurality of member that buckle between mounting panel and the curb plate, is equipped with the mounting hole along first axis 21 on the curb plate, and the both ends of pivot 32 are installed in the mounting hole of two curb plates through the bearing. The first end of the holder suspension member 3 is sleeved on the spindle 32, the pulley is also sleeved on the spindle 32, and the pulley and the holder suspension member 3 are rotatable relative to the spindle 32, the pulley being located along the first axis 21 inside the first end of the holder suspension member 3. This embodiment enables a more compact construction of the tool holder lifting device and is easy to seal.

As can be seen from fig. 1 and 3, the holder 4 is rotatably connected to the second end of the holder suspension member 3 with a third axis 31, the third axis 31 being perpendicular to the first axis 21. Therefore, the tool rest 4 can be adjusted in position in two directions perpendicular to each other, so that the tool rest 4 can be more flexibly adapted to a cutting working surface in the construction process, and damage to the tool due to unbalanced stress is reduced. In order to realize the hinge connection of the tool rest suspension part 3 and the tool rest 4, the upper part of the tool rest suspension part 3 is of a box-shaped structure with a hollow cavity, the pulley is positioned in the hollow cavity, two side wall parts are arranged at intervals along a third axis 31 at the lower part of the box-shaped structure, reinforcing ribs can be arranged on each side wall part, and a hinge hole is arranged at the lower end of each side wall part so as to be hinged with the tool rest 4.

In the working process, the force transmission piece 6 is released, the pulley assembly 2 is lowered, and the cutter rest suspension part 3 and the balance frame 1 are driven to be lowered simultaneously through the rotating shaft 32, so that the cutter rest suspension part 3 drives the cutter rest 4 to be lowered through a pin shaft at the third axis 31 for working.

The tool rest lifting device can be used in a double-wheel slot milling machine and used for underground or underwater infrastructure. In addition, the hydraulic grab bucket can also be used in engineering machinery such as hydraulic grab bucket, milling deep stirring and the like. The following is a detailed description of an example of a tool holder lift device used in a two-wheel slot milling machine.

The first fluid pipe in the above embodiment is a first hydraulic oil pipe 7 for supplying hydraulic oil of a host machine to the cutterhead motor and the mud pump motor on the cutterhead 4, and the second fluid pipe is a mud pipe 5 for discharging a slurry mixture after construction to the host machine. The first hydraulic oil pipe 7 and the mud pipe 5 are located on the left and right sides of the first axis 21, respectively. The cutterhead motor and the mud pump motor are located in a lower position of the tool holder 4 in fig. 3, not shown in the drawing.

Further, a second hydraulic oil pipe 41 and a slag discharging pipe 42 are connected between the balance frame 1 and the tool rest 4, the second hydraulic oil pipe 41 is communicated with the first hydraulic oil pipe 7, the slag discharging pipe 42 is communicated with the slurry pipe 5, and a plurality of second hydraulic oil pipes 41 and first hydraulic oil pipes 7 can be arranged. The length allowance of the second hydraulic oil pipe 41 and the slag discharging pipe 42 exceeds the inclination amount of the balance frame 1, and is always in a loose state during operation.

Specifically, as shown in fig. 3, the top of the balance frame 1 is provided with an on-off valve 14 on one side of the first axis 21, the upper part of the on-off valve 14 is connected with the first hydraulic oil pipe 7, and the lower part is connected with the second hydraulic oil pipe 41. The first hydraulic oil pipe 7 is provided with a pulling member 71 of adjustable length, such as a drag chain or rope, on both sides thereof, to prevent the first hydraulic oil pipe 7 from being broken in tension during construction. The pulling member 71 is connected with a support 13 (such as a lifting lug) arranged close to the on-off valve 14 in a bolt or pin manner, so that the pulling force of the first hydraulic oil pipe 7 can be transferred to the hose balance frame 1. In addition, a mounting joint 11 is arranged on the other side of the top of the balance frame 1, which is positioned on the first axis 21, the upper part of the mounting joint 11 is connected with a mud pipe 5 leading to a main machine, and the lower part of the mounting joint is connected with a slag discharging pipe 42 on the tool rest 4.

In the transportation process, the on-off valve 14 can be closed firstly, then the first hydraulic oil pipe 7 is removed, the hydraulic oil in the first hydraulic oil pipe 7 can be prevented from leaking, and meanwhile, the hydraulic oil can be prevented from being polluted in the transportation process.

When the double-wheel slot milling machine is used for milling slots, the engine drives the oil pump to supply oil, firstly, the tool rest 4 is adjusted to be aligned to a slot position, and then, the wire rope is released to lower the tool rest 4. Hydraulic oil of the main machine is supplied to the milling wheel motor through the first hydraulic oil pipe 7 and the second hydraulic oil pipe 41 in sequence to drive the milling wheel to rotationally cut rock and soil. Meanwhile, the second hydraulic oil pipe 41 also supplies oil to a slurry pump, and slurry mixtures such as broken stone, dregs and the like milled by the milling wheel are discharged to the ground through the slag discharging pipe 42, the mounting joint 11 and the slurry pipe 5 in sequence.

With the tool rest 4 being lowered, the rock and soil is stripped by the milling wheel, a hollow area is formed below the tool rest 4, and at the moment, the wire rope needs to be released continuously, and the tool rest 4 is lowered to mill the rock and soil continuously. In the process of lowering the tool holder 4, in order to ensure the normal operation of the milling wheel motor and the slurry pump motor and the smooth discharge of the slurry, the first hydraulic oil pipe 7 and the slurry pipe 5 need to be kept in a tight state all the time.

When the tensile force F1 born on the first hydraulic oil pipe 7 is different from the tensile force F2 born on the mud pipe 5, the balance frame 1 deflects around the rotating shaft 32 under the action of the tensile force on two sides because the second hydraulic oil pipe 41 and the slag discharging pipe 42 are in a loose state, and when the balance frame 1 deflects a certain angle, the moment of the first hydraulic oil pipe 7 acting on the balance frame 1 is equal to the moment of the mud pipe 5 acting on the balance frame 1, at the moment, the balance frame 1 keeps balance, and the balance frame 1 always carries out angle adjustment along with the first hydraulic oil pipe 7 and the mud pipe 5 in the whole process. However, during the deflection of the balance frame 1 relative to the rotating shaft 32, the tensile force of the first hydraulic oil pipe 7 and the slurry pipe 5 does not act on the tool rest 4, so that the tool rest 4 can be balanced all the time, the tool rest 4 can perform slot milling operation in a vertical state during the construction process, the verticality of a slot hole is ensured, and the construction quality of a continuous wall is ensured.

The tool rest lifting device and the double-wheel slot milling machine provided by the application are described in detail. The principles and embodiments of the present application have been described herein with reference to specific examples, which are intended to be merely illustrative of the methods of the present application and their core ideas. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the application can be made without departing from the principles of the application and these modifications and adaptations are intended to be within the scope of the application as defined in the following claims.

Claims

1. The utility model provides a knife rest hoisting device, its characterized in that includes balance frame (1), and elevating system, is used for providing the first fluid pipe and the second fluid pipe of working fluid for actuating mechanism on knife rest (4), elevating system is used for driving knife rest (4) up-and-down motion, balance frame (1) with elevating system is rotationally connected with first axis (21), the one end of each is connected respectively on balance frame (1) first fluid pipe and second fluid pipe, can drive when receiving unbalanced force balance frame (1) alone around first axis (21) rotation, first fluid pipe and second fluid pipe are located respectively the left and right sides of first axis (21).

2. Tool holder lifting device according to claim 1, characterized in that the lifting mechanism is a pulley assembly (2), the pulley assembly (2) comprising a pulley rotatably connected with the balancing stand (1) with a first axis (21), the tool holder (4) being connected with the pulley.

3. The tool rest lifting device according to claim 2, characterized in that the pulley assembly (2) further comprises a force transmission member (6), the pulley is arranged inside the balancing frame (1), a through groove (12) is formed in the top of the balancing frame (1), and the force transmission member (6) can pass through the through groove (12) and then bypass the pulley to be connected.

4. A tool holder lifting device according to claim 1, further comprising a tool holder suspension member (3), a first end of the tool holder suspension member (3) being rotatably connected to the balancing stand (1) with a second axis (21 '), a second end being connected to the tool holder (4), the second axis (21') being parallel to the first axis (21).

5. The tool holder lifting device according to claim 4, wherein the first axis (21) coincides with the second axis (21').

6. Tool rest lifting device according to claim 4, characterized in that the balancing stand (1), the tool rest suspension part (3) and the lifting mechanism are arranged in sequence from outside to inside along the first axis (21).

7. A tool holder lifting device according to claim 4, characterized in that the tool holder (4) is rotatably connected with the second end of the tool holder suspension part (3) with a third axis (31), the third axis (31) being perpendicular to the first axis (21).

8. Tool holder lifting device according to claim 1, characterized in that one end of each of the first and second fluid pipes is connected to the top of the balancing frame (1), respectively.

9. Tool rest lifting device according to claim 1, characterized in that the position where the first and/or second fluid pipe is connected to the balancing stand (1) is provided with an on-off valve (14) for switching on or off the flow of fluid in the first hydraulic oil pipe.

10. Tool holder lifting device according to claim 1, further comprising a pulling member (71), one end of the pulling member (71) being connected to the balancing frame (1) for transferring the pulling force of the balancing frame (1) on the fluid pipe to the pulling member (71).

11. A two-wheel slot milling machine comprising a tool holder lifting device according to any one of claims 1 to 10.

12. The two-wheel slot milling machine according to claim 11, characterized in that the first fluid pipe is a first hydraulic oil pipe (7) for supplying hydraulic oil of a main machine to a milling wheel motor and a mud pump motor on a tool holder (4), and the second fluid pipe is a mud pipe (5) for discharging a slurry mixture after construction to the main machine.

13. The two-wheel slot milling machine according to claim 12, characterized in that a second hydraulic oil pipe (41) and a slag discharging pipe (42) are connected between the balancing stand (1) and the tool rest (4), the second hydraulic oil pipe (41) is communicated with the first hydraulic oil pipe (7), the slag discharging pipe (42) is communicated with the slurry pipe (5), and the length allowance of the second hydraulic oil pipe (41) and the slag discharging pipe (42) exceeds the inclination amount of the balancing stand (1).