CN115723249A

CN115723249A - Disc cutting machine

Info

Publication number: CN115723249A
Application number: CN202211417811.2A
Authority: CN
Inventors: 张红智; 王晓清; 薛耀; 郑庆栋; 周坤彬
Original assignee: Xiamen Sime Darby Cel Machinery Co ltd
Current assignee: Xiamen Sime Darby Cel Machinery Co ltd
Priority date: 2022-11-14
Filing date: 2022-11-14
Publication date: 2023-03-03

Abstract

The invention belongs to the technical field of rock cutting, and particularly relates to a disc cutting machine. The disc cutting machine comprises a connecting frame, a rack and a saw blade assembly, wherein the connecting frame is used for connecting the rack with the front end of the forearm of the excavator, the saw blade assembly is fixed on the rack, the saw blade assembly is provided with a disc saw blade capable of rotating around a rotating shaft, first supporting hydraulic cylinders are arranged at two ends of the rack, a second supporting hydraulic cylinder fixedly connected with the connecting frame is arranged on the side face of the rack, and the second supporting hydraulic cylinder is located under the front end of the forearm of the excavator. According to the invention, the disc cutting machine is combined with the excavator, and before cutting begins, the support hydraulic cylinders arranged at the two ends and the side surfaces of the frame stretch to support the frame and the excavator on the ground as a support for cutting operation, so that the large arm and the small arm of the excavator and the bucket cylinder do not need to be operated in the cutting process, the disc saw blade is fixed on the frame, only the disc saw blade needs to be controlled in the cutting process, the control process is simpler and more direct, and the control difficulty is reduced.

Description

Disc cutting machine

Technical Field

The invention belongs to the technical field of rock cutting, and particularly relates to a disc cutting machine.

Background

In outdoor quarrying places such as large-scale mines, adopt disc cutter will large-scale stone cut into the fritter mostly, the disc cutter that the mine used has two kinds of forms: one is to lay a track on the ground, and walk along the track on a trolley fixed with a disc saw blade to enable the disc saw blade to cut rocks along the track, and the way needs to lay the track on a cutting route in advance, and the large mine has complex terrain and is inconvenient to lay the track. The other type is an excavator type disc cutting machine, a disc saw blade is fixedly connected with an excavator, the excavator is used for driving the disc saw blade to move, a track does not need to be laid in advance, the track cost is saved, a walking route is not limited by the track, the maneuverability is better, and the defect that the track is laid in advance is overcome to a certain extent. However, when the disc cutting machine of the type cuts, because the hydraulic cylinders of the large arm, the small arm and the bucket are operated manually, an operator needs to continuously adjust the hydraulic cylinder in a cab of the excavator in the operation process, a certain distance exists between the cab and the cutting position, the operator controls the hydraulic cylinder while observing the cutting position, the difficulty is high, and the whole cutting process is unsmooth, uncoordinated, unsafe and unbalanced in cutting speed. And because the cutting speed and the depth are manually controlled, the state of the saw blade cannot be sensed in time, for example, when the hardness of the rock is high, the rotating speed of the disc saw blade is reduced, and at the moment, if the feeding speed is not changed, safety accidents such as cutting of a clamping saw, even jumping of the saw, breaking of the saw, breakage of a tool bit and the like are caused, even casualties are caused, and therefore the rock cannot be cut safely and effectively.

Disclosure of Invention

The invention aims to provide a disc cutting machine, which solves the problem that the existing excavator type disc cutting machine cannot cut rocks normally and safely.

In order to achieve the purpose, the technical scheme of the invention is as follows: the utility model provides a disc cutting machine, including the link, frame and saw bit subassembly, the link is used for being connected the forearm front end of frame and excavator, use frame length direction as the X axle, be the Y axle with X axle vertically direction of height, the saw bit subassembly is fixed in the frame, and the saw bit subassembly can translate respectively along X axle and Y axle direction, the saw bit subassembly has the disc saw bit that can revolute the rotation of axes, the disc saw bit is on a parallel with the plane that X axle and Y axle formed, disc saw bit pivot perpendicular to X axle and Y axle, the frame both ends all are equipped with first support hydraulic cylinder, the frame side is equipped with the second support hydraulic cylinder with link fixed connection, and the second support hydraulic cylinder is located the forearm front end of excavator under, the piston rod of second support hydraulic cylinder can stretch out ground and be used for carrying out the location support to the excavator, the piston rod of first support hydraulic cylinder can stretch out ground and support disc cutting machine subaerial, when cutting operation, as cutting operation support.

According to the invention, the disc cutting machine is combined with the excavator, before cutting begins, the support hydraulic cylinders arranged at the two ends and the side surfaces of the frame stretch out and draw back to support the frame and the excavator on the ground as a support for cutting operation, so that the large arm, the small arm and the bucket cylinder of the excavator do not need to be operated in the cutting process, and the disc saw blade is fixed on the frame, therefore, only the disc saw blade needs to be controlled in the cutting process, the control process is simpler and more direct, the control difficulty is reduced, and the cutting operation is stable, safe and efficient. In addition, the circular saw blade can move in the directions of the X axis and the Y axis respectively, so that the circular saw blade can move along the cutting track to cut a certain depth for a small number of times.

In one embodiment, the disc cutting machine further comprises a directional hydraulic motor for driving the disc saw blade to move on an X axis, a feeding hydraulic cylinder for driving the disc saw blade to move on a Y axis, a driving hydraulic motor for driving the disc saw blade to rotate, a displacement sensor for detecting the moving distance of the disc saw blade in the Y axis direction, a pressure sensor for detecting the pressure of a hydraulic pump and a rotating speed sensor for detecting the rotating speed of the disc saw blade, wherein the controller controls the directional hydraulic motor, the driving hydraulic motor and the feeding hydraulic cylinder to move according to data collected by the displacement sensor and the rotating speed sensor so as to adjust the feeding amount of the disc saw blade in the X axis direction and the Y axis direction, and the controller can also control the output power of a hydraulic pump of the excavator according to data collected by the pressure sensor so that the output power of the hydraulic pump matches the maximum power of the driving hydraulic motor and the directional hydraulic motor.

The rotating speed of the disc saw blade is timely obtained through the controller and the sensors, so that the cutting feed amount of the disc saw blade is controlled, safety accidents such as cutting of a clamping saw, jumping of the saw, breaking of the saw, breakage of a tool bit and the like are avoided, rocks can be safely and effectively cut, in addition, the output power of the hydraulic pump is controlled to be matched with the maximum power of the two hydraulic motors, and the hydraulic motors can be protected.

In one embodiment, the machine frame comprises an upper cross beam and a lower cross beam, a feeding hydraulic cylinder is arranged between the upper cross beam and the lower cross beam and used for driving the lower cross beam to lift relative to the upper cross beam along the Y-axis direction, a saw blade assembly is arranged on the lower cross beam and comprises a driving hydraulic motor, a reduction gearbox and a disc saw blade, the driving hydraulic motor and the reduction gearbox are connected and fixed on the lower cross beam, the power output end of the driving hydraulic motor is connected with the input shaft of the reduction gearbox, and the disc saw blade is fixedly connected with the output shaft of the reduction gearbox.

The feeding hydraulic cylinder can make the lower beam move up and down relative to the upper beam, so that the disc saw blade moves up and down, the disc saw blade can longitudinally cut along rocks from the top of the rocks, and the cutting is safer, smoother and faster.

In one embodiment, the upper cross beam is designed with two guide holes, the two guide holes are symmetrical to the two ends of the upper cross beam, two guide posts are fixed above the lower cross beam, and the guide posts penetrate through the lower ends of the guide holes and are fixedly connected with the lower cross beam.

The upper cross beam and the lower cross beam are assembled and connected through the two guide posts and the feeding hydraulic cylinder to form a vertical cutting movement mechanism, the guide posts ensure the movement direction and stability of the lower cross beam, the lower cross beam is prevented from inclining, the disc saw blade is kept in the Y-axis direction all the time, and the cutting accuracy is ensured.

In one embodiment, the lower beam is provided with a slide rail and a slide block, the slide block can slide on the slide rail, and the slide block is fixedly connected with the saw blade assembly and used for driving the saw blade assembly to move along the slide rail in the X-axis direction.

Through slide rail and slider, the saw bit subassembly can slide in X axle direction along the bottom end rail to make the disc saw bit can cut and need not to remove the excavator along bottom end rail full stroke on X axle direction, make the cutting high-efficient, safe.

In one embodiment, the slide rail is fixed on the lower cross beam, the sliding surface of the slide rail faces upwards along the Y axis, the slide block is bent at two sides of the slide rail and extends downwards along the Y axis, and the lower end of the slide block is fixedly connected with the saw blade assembly.

Through the slider with the assembly of saw bit subassembly in the slide rail below, disc saw bit can be closer to ground, consequently can reduce the height that saw bit subassembly descends in cutting machine working process, indirectly makes slide rail and frame keep away from ground, makes disc saw bit have bigger decline stroke, can cut more deeply.

In one embodiment, the lower beam is provided with a movement mechanism for driving the sliding block to move along the sliding rail.

The moving mechanism can make the sliding block reciprocate along the sliding rail at the lower cross beam, and the disc saw blade can cut rocks in a reciprocating manner along the sliding block between the two ends of the lower cross beam along the X-axis direction and can also cut in a one-way manner.

In one embodiment, the moving mechanism comprises a directional hydraulic motor, two chain wheels arranged at two ends of the lower cross beam and a chain wound on the chain wheels, an output shaft of the directional hydraulic motor is fixedly connected with the chain wheels, two ends of the chain are fixedly connected with the saw blade assembly, and the chain is used for driving the saw blade assembly and the sliding block to move along the sliding rail in the X-axis direction.

The direction hydraulic motor drives the chain wheel to rotate to drive the chain to move, so that the saw blade assembly is driven to move along the length direction of the lower cross beam, power is conveniently acquired from a hydraulic system of the excavator by adopting a direction hydraulic motor driving mode, parts of the disc cutting machine are reduced, and the overall structure is simplified.

In one embodiment, the connecting frame comprises a first connecting frame and a second connecting frame, the first connecting frame is fixedly connected with the front end of the small arm, the second connecting frame is arranged above the upper cross beam and fixedly connected with the upper cross beam, a hydraulic swing mechanism is arranged between the first connecting frame and the second connecting frame, and the second supporting hydraulic cylinder is arranged inside the second connecting frame and fixedly connected with the second connecting frame.

The hydraulic swing mechanism is arranged to enable the rack and the disc saw blade to rotate relative to the small arm, so that the cutting direction of the disc saw blade can be adjusted conveniently, the second supporting hydraulic cylinder extends out to support the large arm and the small arm of the excavator and the rack on the ground after the rack moves in place, the excavator directly acts force on the second supporting hydraulic cylinder through the small arm, and therefore the upper cross beam and the lower cross beam assembly are prevented from bearing the supporting force of the excavator, and the rack is effectively prevented from being deformed and damaged.

In one embodiment, the periphery of the circular saw blade is provided with a protective cover, the protective cover is arc-shaped, and the protective cover is arranged at the upper part of the circular saw blade and has a gap with the circular saw blade; the frame is provided with a water pipe, and the water outlet of the water pipe faces the disc saw blade.

The protective cover can effectively prevent cutting dust, sand and stone from splashing and prevent the cutter head from flying off; the water pipe can be towards disc saw bit water spray, can reduce near the dust that raises near disc saw bit of cutting machine during operation and play the effect that the workplace removed dust, can also reduce the temperature of disc saw bit, avoids disc saw bit long time work back high temperature and damage.

The invention has the following beneficial effects:

1. the disc cutting machine is provided with the supporting hydraulic cylinder, the disc cutting machine is supported on the ground through the frame and the supporting hydraulic cylinder before cutting, and the disc saw blade can move relative to the frame, so that the disc cutting machine only needs to be controlled independently in the cutting process, the disc saw blade does not need to be indirectly controlled through a large arm and a small arm of an excavator and the bucket hydraulic cylinder, the control is more direct and simpler, the cutting is smoother, and the cutting smoothness is improved.

2. A feed oil cylinder displacement sensor of the disc cutting machine and a rotating speed sensor of a hydraulic motor are connected to a controller, and a corresponding hydraulic cylinder or the hydraulic motor is controlled according to the rotating speed of a disc saw blade, so that the feed speed or the feed amount of the disc saw blade is adjusted, and safety accidents such as cutting and clamping of the saw, jumping of the saw, breaking of the saw, breakage of a tool bit and the like caused by over-high feed are avoided, and even casualties are avoided; when the rock is easier to cut, the feeding speed or the feeding amount can be increased, and the cutting efficiency is improved.

3. The disc cutter is arranged on the excavator, and the disc cutter is matched with the rack and the supporting hydraulic cylinder, so that the disc cutter can be stabilized on the ground when the disc cutter works, the shaking of the excavator and the cutter rack during cutting operation is avoided, and the disc cutter can be used for cutting all rocks such as granite and the like.

4. The disc cutting machine is installed on the excavator, the field mine terrain is complex, the excavator is flexible and small, and the disc saw blade can be conveyed to a working position by adapting to the complex terrain of a mine.

5. The controller can also control the output power of the hydraulic pump of the excavator according to the data collected by the pressure sensor, so that the output power of the hydraulic pump is matched with the maximum power of the driving hydraulic motor and the direction hydraulic motor, and the hydraulic motor can be protected.

Drawings

FIG. 1 is a schematic view of the present invention assembled with an excavator;

FIG. 2 is a perspective view of the present invention;

FIG. 3 is a perspective view of another aspect of the present invention;

FIG. 4 is a perspective view of the present invention without the circular saw blade;

FIG. 5 is a use state diagram of the present invention;

FIG. 6 is a use state diagram (two) of the present invention;

FIG. 7 is a comparison of two states of use of the present invention;

wherein: the device comprises a connecting frame 1, a first connecting frame 11, a lug 111, a second connecting frame 12, a swing mechanism 13, a frame 2, an upper beam 21, a guide hole 211, a lower beam 22, a feed hydraulic cylinder 23, a guide post 24, a first supporting hydraulic cylinder 25, a first cylinder 251, a first piston rod 252, a guide sleeve 26, a guide post 27, a saw blade assembly 3, a disc saw blade 31, a reduction gearbox 32, a sliding rail 4, a sliding block 5, a movement mechanism 6, a chain wheel 61, a chain 62, a second supporting hydraulic cylinder 7, a second piston rod 71 and a W-shaped excavator.

Detailed Description

To further illustrate the various embodiments, the invention provides the accompanying drawings. The accompanying drawings, which are incorporated in and constitute a part of this disclosure, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the embodiments. Those skilled in the art will appreciate still other possible embodiments and advantages of the present invention with reference to these figures. The components in the drawings are not necessarily to scale, and similar reference numerals are generally used to identify similar components.

Referring to fig. 1, as an embodiment of the present invention, a circular disc cutting machine is provided, which includes a connecting frame 1, a frame 2, and a saw blade assembly 3, wherein the connecting frame 1 is used to fixedly connect the frame 2 to a front end of a forearm of an excavator W, and the saw blade assembly 3 is fixed to the frame 2, so that the circular disc cutting machine is integrally disposed on the forearm of the excavator W, and the excavator W drives the circular disc cutting machine to move and provides power required by the operation of the circular disc cutting machine.

Referring to fig. 2 to 4, the length direction of the frame 2 is an X axis, and the height direction perpendicular to the X axis is a Y axis. The frame 2 comprises an upper beam 21 and a lower beam 22, two feeding hydraulic cylinders 23 are arranged between the upper beam 21 and the lower beam 22, the two feeding hydraulic cylinders 23 are respectively arranged at two ends of the upper beam 21, and the feeding hydraulic cylinders 23 can extend and contract to adjust the distance between the upper beam 21 and the lower beam 22. Two guide posts 24 are further arranged between the upper cross beam 21 and the lower cross beam 22, two guide holes 211 are arranged at positions, close to the end portions, of two ends of the upper cross beam 21, the lower ends of the two guide posts 24 are fixed on the lower cross beam 22, and the upper ends of the two guide posts extend out of the upper portion of the upper cross beam 21 after penetrating through the guide holes 211. Both the feed cylinder 23 and the guide post 24 are arranged along the Y-axis so that the lower beam 22 can translate along the Y-axis.

Referring to fig. 2-4, the lower beam 22 is provided with a first supporting hydraulic cylinder 25 at each end, a cylinder 251 of the first supporting hydraulic cylinder 25 is fixed on the lower beam 22, and a telescopic piston rod 252 is disposed below the lower beam 22. The guide sleeves 26 and the guide posts 27 are arranged at two ends of the lower cross beam 22, the guide sleeves 26 are fixed at two ends of the lower cross beam 22, the guide sleeves 26 at two ends are respectively arranged at one side of the first supporting hydraulic cylinders 25 at two ends and close to the first supporting hydraulic cylinders 25, and the guide posts 27 are fixed in the guide sleeves 26 and can slide along the guide sleeves 26. The lower end of the guide post 27 is fixedly connected with the lower end of the piston rod 252, the piston rod 252 can drive the guide post 27 to slide up and down by stretching, and the guide post 27 plays a role in limiting the movement direction of the piston rod 252 and simultaneously plays a role in supporting the rack 2 when the cutting machine works under the combined action of the support hydraulic cylinder 25. The first supporting hydraulic cylinder 25, the guide sleeve 26 and the guide post 27 are respectively provided at least one at each end of the two ends of the lower cross beam 22, and a plurality of hydraulic cylinders can be provided according to actual needs as long as the first supporting hydraulic cylinder 25 can support the frame 2, and the design of the guide sleeve 26 and the guide post 27 can limit the moving direction of the piston rod 252.

Referring to fig. 2-4, a slide rail 4, a slide block 5 and a motion mechanism 6 for moving the blade assembly 3 along the X-axis are provided between the frame 2 and the blade assembly 3.

The saw blade component 3 comprises a disc saw blade 31, a driving hydraulic motor (not shown in the figure) for driving the disc saw blade to rotate and a reduction box 32, the disc saw blade 31 is parallel to a plane formed by an X axis and a Y axis, a rotating shaft of the disc saw blade 31 is vertical to the plane formed by the X axis and the Y axis, an output shaft of the driving hydraulic motor is fixedly connected with an input end of the reduction box 32, an output end of the reduction box 32 is fixedly connected with the disc saw blade 31, and therefore the driving hydraulic motor can drive the disc saw blade 31 to rotate through the reduction box.

The slide rail 4 is fixedly arranged on the lower cross beam 22, extends along the X-axis direction, and the sliding surface faces the upper part of the Y-axis, and a slide block 5 which is matched with the sliding surface of the slide rail 4 and can slide on the slide rail 4 along the X-axis direction is arranged on the slide rail 4. The sliding block 5 is bent at two sides of the sliding rail 4 and extends downwards along the Y-axis direction, and the lower end of the sliding block 5 is fixedly connected with the reduction gearbox 32, so that the reduction gearbox 32 and the disc saw blade 31 are hung below the sliding rail 4. Referring to fig. 5 and 6, since the circular saw blade 31 needs to lower the whole saw blade assembly during the cutting process, in this case, the saw blade assembly 3 is suspended on the frame 2 by the slider 5, so that the saw blade assembly 3 is in a downward position, and no other parts are located below the saw blade assembly 3, so that the saw blade assembly 3 can be lowered lower to cut deeper. The sliding blocks 5 are bent and extended downwards from two sides of the sliding rail 4, so that at least two connecting points of the sliding blocks 5 and the reduction gearbox 32 exist, a certain distance exists between the two connecting points, the reduction gearbox 32 is kept stable, the shaking is reduced, and the disc saw blade 31 is cut more accurately.

Referring to fig. 2-4, the moving mechanism 6 is fixed on a chain wheel 61 at two ends of the lower beam 22 and a chain 62 wound around the chain wheel 61, two ends of the chain 62 are fixed on two sides of the reduction gearbox 32, when the chain wheel 61 rotates, the chain 62 drives the reduction gearbox 32 to move along the X-axis direction, and the direction of the reduction gearbox 32 can be switched by switching the rotating direction of the chain wheel 61. A worm gear speed reducer driven by a directional hydraulic motor is further arranged at the rotating shaft of one of the chain wheels 61, and an output shaft of the worm gear speed reducer is connected with the rotating shaft of the chain wheel 61 and used for controlling the steering and rotating speed of the chain wheel 61. In other embodiments, the movement mechanism 6 may also be another transmission mechanism, such as a rack and pinion mechanism, a multi-link mechanism, or a hydraulic cylinder.

Because the rotating speed of the disc saw blade 31 is large and the disc saw blade 31 is heavy when the disc cutting machine works, if a fault occurs, the disc saw blade 31 partially or completely falls off or even flies far away, and the damage to a working place and nearby personnel is easily caused. In order to avoid the above-mentioned damage, a protecting cover (not shown) is disposed above the circular saw blade 31, the protecting cover is capable of covering at least the saw teeth of the upper half of the circular saw blade 31, and a certain gap is formed between the protecting cover and the circular saw blade to enable the circular saw blade 31 to rotate normally.

When the cutting machine works, a large amount of dust can be generated at the cutting position after the rock is cut, so that the water pipe is arranged, the water outlet of the water pipe is aligned to the disc saw blade, water is sprayed at the source of the generated dust, and air pollution caused by dust is avoided. In addition, the temperature that can make disc saw bit rises with a large amount of frictions of rock when disc saw bit 31 cuts, therefore disc saw bit needs the water spray cooling, the water pipe that can remove dust jointly, also can set up the water pipe alone and aim at disc saw bit with the delivery port. When the temperature-adjustable water spraying device is independently arranged, the temperature sensor and the electronic valve can be additionally arranged, the valve is opened to spray water when the temperature reaches a set value, and the water consumption can be reduced.

Referring to fig. 2 to 4, the link 1 includes a first link 11, a second link 12, and a swing mechanism 13 disposed between the first link 11 and the second link 12. The first connecting frame 11 is used for being fixedly connected with the tail end of the small arm of the excavator, four lugs 111 are arranged on the first connecting frame 11, and the lugs 111 are connected with the small arm through bolts. The upper part of the upper beam 21 is provided with a second connecting frame 12 fixedly connected with the upper beam 21, the swing mechanism 13 is respectively connected with the first connecting frame 11 and the second connecting frame 12, so that the first connecting frame 11 and the second connecting frame 12 can relatively rotate, the swing mechanism 13 is a worm and gear hydraulic swing driving device and the like in the prior art, and the swing mechanism 13 is driven by hydraulic pressure, so that a hydraulic system of the excavator can be used for providing swing power for the swing mechanism to rotate the frame according to the cutting position and direction. The second support hydraulic cylinder 7 is fixedly arranged below the second connecting frame 12, the second cylinder body 71 of the second support hydraulic cylinder 7 is fixed below the second connecting frame 12, the second piston rod 72 faces downwards, the telescopic second piston rod 72 can provide support for the excavator, the weight of the mechanical arm of the excavator is prevented from being completely pressed on the second connecting frame 5 and the rack 2 during operation, the stress of the second connecting frame 5 and the rack 2 is reduced, and the disc saw blade is prevented from being influenced by deformation of the second connecting frame and the rack.

It should be noted that the hydraulic cylinders and hydraulic motors according to the present invention include the feeding hydraulic cylinder 23, the first support hydraulic cylinder 25, the second support hydraulic cylinder 7, and hydraulic oil for driving the hydraulic motor and the directional hydraulic motor, which are all derived from hydraulic pumps of the excavator.

The invention also comprises a controller, a displacement sensor arranged on the lower beam and used for detecting the descending depth of the disc saw blade, and a sensor arranged in the reduction box 32 and used for acquiring the rotating speed of the disc saw blade, wherein the controller controls the feeding hydraulic cylinder 23, the first supporting hydraulic cylinder 25 and the direction hydraulic motor according to the rotating speed of the disc saw blade acquired by the rotating speed sensor in the cutting process, so that the stability of the frame is maintained, the feeding speed of the disc saw blade in the X-axis direction and the cutting feeding amount of the disc saw blade in the Y-axis direction are adjusted, when the cutting difficulty is higher, the feeding speed and the feeding amount are reduced to protect the disc saw blade, and when the cutting difficulty is lower, the feeding speed and the feeding amount are increased to improve the cutting efficiency. Compared with manual control, the speed change of the disc saw blade can be sensed by the sensor in time, and the feeding amount and the feeding speed can be adjusted in time, so that the cutting process is smoother. The hydraulic pump of the excavator is also provided with a pressure sensor for detecting the output power of the hydraulic pump, so that the output power is lower than the maximum power of the two hydraulic motors, and the hydraulic motors are prevented from being damaged due to overlarge power, thereby protecting the hydraulic motors.

The workflow of this embodiment is as follows: referring to fig. 5, the excavator travels to the work site, adjusts the position and orientation of the frame 2 to be located above the rock to be cut, and extends the first support cylinder 25 and the second support cylinder 7 to fix the frame and the excavator on the ground. The hydraulic motor in the opening direction enables the chain wheel to rotate, the reduction gearbox 32 and the sliding block 5 are driven to move, the sliding block 5 is enabled to move to one end of the sliding rail 4, and the disc saw blade 31 is located on one side of the rack 2 at the moment. Referring to fig. 6, the hydraulic motor is driven to rotate the circular saw blade 31, and the two feeding hydraulic cylinders 23 are extended to move the lower beam 22, the saw blade assembly 3, the slide rail 4, the slider 5 and the moving mechanism 6 downward along the Y-axis at the same time until the circular saw blade 31 contacts the rock to start cutting. The hydraulic control system controls the distance of extension of the feeding hydraulic cylinder 23 until the disc saw blade 31 reaches the depth of single-layer cutting and then stops the feeding hydraulic cylinder, and the directional hydraulic motor is started to move the disc saw blade along the X-axis at a rated speed and cut rocks until the slide block 33 reaches the other end of the slide rail 221. Referring to fig. 7, during the descending process of the feeding hydraulic cylinder 23, the first supporting hydraulic cylinder 25 ascends synchronously, and the descending height of the feeding hydraulic cylinder 23 is equal to the ascending height of the first supporting hydraulic cylinder 25, so as to keep the first supporting hydraulic cylinder 25 and the second supporting hydraulic cylinder 7 always supported on the ground. The feeding hydraulic cylinder 23 is controlled to extend to enable the disc saw blade 31 to descend to a single-layer cutting depth, and the directional hydraulic motor rotates reversely to drive the disc saw blade to move reversely along the X axis until the sliding block 5 reaches one end of the sliding rail 4. The above steps of extending the feed cylinder 23 and turning the hydraulic motor are repeated until the predetermined maximum depth of cut is achieved.

And driving the hydraulic motor and the directional hydraulic motor to stop, retracting the feeding hydraulic cylinder 23 to an initial state, retracting the first supporting hydraulic cylinder 25 to an initial position, retracting the second supporting hydraulic cylinder 7 to the initial position, adjusting the excavator to move the rack to a next working position, repeating the steps of extending the hydraulic cylinders, driving the hydraulic motor and the directional hydraulic motor and the like, and continuing to cut the rock along the cutting line until the cutting operation is finished.

According to the working process, the large arm and the small arm of the excavator only need to be moved in the process of moving the rack, after the rack is moved to the preset position, the large arm and the small arm of the excavator do not need to be operated in the fixing and cutting processes before cutting, so that the fixing and cutting processes of the rack can be independently set, operators do not need to operate in a cab of the excavator to control cutting, and the defect of visual operation due to the fact that the cutting position and the cab are far away is overcome. Furthermore, a sensor is arranged to acquire the rotating speed of the disc saw blade, each hydraulic mechanism of the disc cutting machine and a hydraulic pump of the excavator are connected to the hydraulic control system, the hydraulic control system can control the feeding amount and the feeding speed of the disc saw blade according to the rotating speed of the disc saw blade acquired by the sensor, the disc saw blade can be protected, and the working efficiency can be improved.

While the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. The disc cutting machine is characterized by comprising a connecting frame, a rack and a saw blade assembly, wherein the connecting frame is used for connecting the rack with the front end of a small arm of an excavator, the length direction of the rack is used as an X axis, the height direction perpendicular to the X axis is used as a Y axis, the saw blade assembly is fixed on the rack and can respectively translate along the X axis and the Y axis, the saw blade assembly is provided with a disc saw blade capable of rotating around a rotating shaft, the disc saw blade is parallel to a plane formed by the X axis and the Y axis, a disc saw blade rotating shaft is perpendicular to the X axis and the Y axis, two ends of the rack are respectively provided with a first supporting hydraulic cylinder, a side surface of the rack is provided with a second supporting hydraulic cylinder fixedly connected with the connecting frame, the second supporting hydraulic cylinder is located under the front end of the small arm of the excavator, a piston rod of the second supporting hydraulic cylinder can extend to the ground for carrying out whole machine positioning support on the excavator, a piston rod of the first supporting hydraulic cylinder can extend to the ground to support the disc cutting machine on the ground, and can serve as a cutting operation support during cutting operation.

2. The disc cutting machine according to claim 1, wherein the disc cutting machine further comprises a directional hydraulic motor for driving the disc saw blade to move in the X-axis direction, a feed hydraulic cylinder for driving the disc saw blade to move in the Y-axis direction, a drive hydraulic motor for driving the disc saw blade to rotate, a displacement sensor for detecting a moving distance of the disc saw blade in the Y-axis direction, a pressure sensor for detecting a pressure of the hydraulic pump, and a rotation speed sensor for detecting a rotation speed of the disc saw blade, the controller controls the directional hydraulic motor, the drive hydraulic motor, and the feed hydraulic cylinder to move according to data collected by the displacement sensor and the rotation speed sensor, so as to adjust feeding amounts of the disc saw blade in the X-axis direction and the Y-axis direction, and the controller controls output power of the hydraulic pump of the excavator according to data collected by the pressure sensor, so that the output power of the hydraulic pump matches maximum power of the drive hydraulic motor and the directional hydraulic motor.

3. The disc cutting machine according to claim 1, wherein the frame comprises an upper cross beam and a lower cross beam, a lifting hydraulic cylinder is arranged between the upper cross beam and the lower cross beam, a feeding hydraulic cylinder is used for driving the lower cross beam to lift relative to the upper cross beam along the Y-axis direction, the lower cross beam is provided with a saw blade assembly, the saw blade assembly comprises a driving hydraulic motor, a reduction box and a disc saw blade, the driving hydraulic motor and the reduction box are connected and fixed on the lower cross beam, the power output end of the driving hydraulic motor is connected with the input shaft of the reduction box, and the disc saw blade is fixedly connected with the output shaft of the reduction box.

4. The disc cutting machine according to claim 3, wherein the upper beam is provided with two guiding holes, the two guiding holes are respectively symmetrical to two ends of the upper beam, two guiding posts are fixedly arranged above the lower beam, and the guiding posts penetrate through the lower ends of the guiding holes and are fixedly connected with the lower beam.

5. The disc cutting machine according to claim 3, wherein the lower beam is provided with a slide rail and a slide block, the slide block can slide on the slide rail, and the slide block is fixedly connected with the saw blade assembly and is used for driving the saw blade assembly to move along the slide rail in the X-axis direction.

6. The disc cutting machine according to claim 5, wherein the slide rail is fixed to the lower beam with the slide surface facing upward along the Y-axis, the slide block is bent at both sides of the slide rail to extend downward along the Y-axis, and the lower end of the slide block is fixedly connected to the saw blade assembly.

7. Disc cutter according to claim 5, characterized in that the lower cross-member is provided with a kinematic mechanism for driving the slide along the slide.

8. The disc cutting machine according to claim 7, wherein the moving mechanism includes a directional hydraulic motor, two chain wheels disposed at two ends of the lower beam, and a chain wound around the chain wheels, an output shaft of the directional hydraulic motor is fixedly connected to the chain wheels, two ends of the chain are fixedly connected to the saw blade assembly, and the chain is used for driving the saw blade assembly and the slide block to move along the slide rail in the X-axis direction.

9. The disc cutting machine according to claim 1, wherein the connecting frame comprises a first connecting frame and a second connecting frame, the first connecting frame is fixedly connected with the front end of the small arm, the second connecting frame is arranged above the upper cross beam and is fixedly connected with the upper cross beam, a hydraulic swing mechanism is arranged between the first connecting frame and the second connecting frame, and the second supporting hydraulic cylinder is arranged inside the second connecting frame and is fixedly connected with the second connecting frame.

10. The disc cutting machine according to claim 1, wherein a protective cover is provided on the outer periphery of the disc saw blade, the protective cover is in the shape of a circular arc, and the protective cover is provided on the upper portion of the disc saw blade and has a gap with the disc saw blade; the frame is provided with a water pipe, and the water outlet of the water pipe faces the disc saw blade.