WO2023035365A1

WO2023035365A1 - Hydraulic system of wire saw machine and wire saw machine

Info

Publication number: WO2023035365A1
Application number: PCT/CN2021/124679
Authority: WO
Inventors: 徐丽宁; 张海波; 卓旺旺; 王体躲
Original assignee: 烟台杰瑞石油装备技术有限公司
Priority date: 2021-09-13
Filing date: 2021-10-19
Publication date: 2023-03-16
Also published as: CN113638924A

Abstract

A hydraulic system of a wire saw machine and a wire saw machine are disclosed. The hydraulic system of a wire saw machine comprises a hydraulic pump (2), a priority flow distribution valve (6), a first hydraulic motor (9), a second hydraulic motor (10), and an oil drain port (D). The priority flow distribution valve comprises a first oil inlet (61), a first oil outlet (62), and a second oil outlet (63), the first oil outlet is configured to output a constant flow, the second oil outlet is configured to output the remaining flow, the first oil inlet is connected to the hydraulic pump, the first oil outlet is connected to the second hydraulic motor, and the second oil outlet is connected to the first hydraulic motor. According to the hydraulic system of a wire saw machine, the flow distributed to the first hydraulic motor, the second hydraulic motor, and other actuators is more stable by providing the priority flow distribution valve, so that the rotating speed of the wire saw is stable. Compared with existing single-pump driven hydraulic systems, the cutting efficiency and operation safety of the wire saw machine are improved.

Description

Hydraulic system of wire saw machine and wire saw machine

Cross References to Related Applications

For all purposes, this application claims the priority of Chinese Patent Application No. 202111068523.6 filed on September 13, 2021, and the content disclosed in the above Chinese Patent Application is hereby cited in its entirety as a part of this application.

technical field

Embodiments of the present disclosure relate to a hydraulic system of a wire saw machine and the wire saw machine.

Background technique

The wire saw machine is a kind of equipment that strings high-hardness particles (such as diamond) into a wire saw, and the wire saw moves at high speed to cut the object to be cut. Using a wire saw machine for flexible mechanical cutting is an efficient and precise cutting method that can cut different materials such as rocks, concrete and steel in the same cutting process, and the operation is less affected by environmental factors. It has unique advantages in crushing and cutting, stone mining, block processing, demolition of reinforced concrete structures, and maintenance of marine structures. The wire saw machine has the advantages of simple operation, low environmental requirements, high cutting efficiency and good incision quality, which greatly reduces the transformation cost of the enterprise.

According to the driving mode, the wire saw machine can be divided into electric type and hydraulic type. Compared with the hydraulic type, under the same power, the mass and volume of the saw head of the electric wire saw machine are larger, which causes the saw head to sag and makes the wire saw more likely to shake during cutting, and is not suitable for underwater cutting conditions. Most of the existing hydraulic wire saw machines are hydraulic systems driven by a single pump, which cannot guarantee the stability of the flow rate of each actuator (such as cutting motor and feed motor). The flow rate becomes smaller, and the speed of the wire saw becomes slower, which reduces the cutting efficiency. The existing hydraulic wire saw machine also has a hydraulic system driven by two pumps. Although it can ensure that the cutting motor speed is not affected by the action of other actuators, it requires two hydraulic pumps to work at the same time, which will increase the cost of the hydraulic system and the cost of equipment and piping. Road layout is difficult.

Contents of the invention

Embodiments of the present disclosure provide a hydraulic system of a wire saw machine and the wire saw machine. The hydraulic system of the wire saw machine includes a hydraulic pump, a priority flow distribution valve, a first hydraulic motor, a second hydraulic motor and an oil drain port. The priority flow distribution valve includes a first oil inlet, a first oil outlet and a second oil outlet, the first oil outlet is configured to output a constant flow, the second oil outlet is configured to output a remaining flow, and the first oil outlet is configured to output a remaining flow. The oil inlet is connected to the hydraulic pump, the first oil outlet is connected to the second hydraulic motor, and the second oil outlet is connected to the first hydraulic motor. The hydraulic system of the wire saw machine makes the flow distributed to the first hydraulic motor, the second hydraulic motor and other actuators more stable by setting the priority flow distribution valve, so that the speed of the wire saw is stable. Compared with the existing single pump The driving hydraulic system improves the cutting efficiency and operation safety of the wire saw machine. In addition, the hydraulic system of the wire saw machine is a single-pump driven hydraulic system, which reduces the cost of the hydraulic system and the difficulty of arranging equipment and pipelines compared with the existing double-pump driven hydraulic system.

An embodiment of the present disclosure provides a hydraulic system of a wire saw machine, including a hydraulic pump, a priority flow distribution valve, a first hydraulic motor, a second hydraulic motor and an oil drain port, the first hydraulic motor is configured to drive a wire saw The cutting device of the wire saw machine moves, and the second hydraulic motor is configured to drive the feed device of the wire saw machine to move. The priority flow distribution valve includes a first oil inlet, a first oil outlet and a second oil outlet, the first oil outlet is configured to output a constant flow, and the second oil outlet is configured to output For the remaining flow, the first oil inlet is connected to the hydraulic pump, the first oil outlet is connected to the second hydraulic motor, and the second oil outlet is connected to the first hydraulic motor.

In some examples, the hydraulic system further includes a flow regulating valve, the flow regulating valve includes a second oil inlet and a third oil outlet, the first oil outlet is connected to the second oil inlet, The third oil outlet is connected to the second hydraulic motor.

In some examples, the flow regulating valve further includes a fourth oil outlet connected to the oil drain port.

In some examples, the hydraulic system further includes a first reversing valve, the first reversing valve includes a third oil inlet, a fifth oil outlet, a first working port and a second working port, the first A hydraulic motor includes a first port and a second port, the third oil inlet is connected to the second oil outlet, the first working port is connected to the first port, and the second working port is connected to to the second port, the fifth oil outlet is connected to the drain port.

In some examples, the first reversing valve includes a first passage and a second passage, and in the first passage, the flow direction of hydraulic oil is sequentially passing through the third oil inlet, the first working interface, the first interface, the second interface, the second working interface, and the fifth oil outlet; in the second passage, the hydraulic oil flows through the third inlet in sequence. oil port, the second working port, the second port, the first port, the first working port, and the fifth oil outlet.

In some examples, the hydraulic system further includes a first relief valve, the first end of the first relief valve is connected between the second oil outlet and the third oil inlet, the A second end of the first relief valve is connected to the drain port.

In some examples, the hydraulic system further includes a second reversing valve, the second reversing valve includes a fourth oil inlet, a sixth oil outlet, a third working interface and a fourth working interface, the first The second hydraulic motor includes a third port and a fourth port, the fourth oil inlet is connected to the third oil outlet, the third working port is connected to the third port, and the fourth working port is connected to to the fourth port, and the sixth oil outlet is connected to the drain port.

In some examples, the second reversing valve includes a third passage and a fourth passage, and in the third passage, the hydraulic oil flows through the fourth oil inlet, the third working interface, the third interface, the fourth interface, the fourth working interface, and the sixth oil outlet; in the fourth passage, the hydraulic oil flows through the fourth inlet in sequence. oil port, the fourth working port, the fourth port, the third port, the third working port, and the sixth oil outlet.

In some examples, the hydraulic system further includes a second relief valve and a shuttle valve, the shuttle valve includes a fifth oil inlet, a sixth oil inlet and a seventh oil outlet, the fifth oil inlet connected between the third working port and the third port, the sixth oil inlet is connected between the fourth working port and the fourth port, and the seventh oil outlet is connected to The first end of the second relief valve, the second end of the second relief valve is connected to the drain port, and the shuttle valve is configured to compare the fifth oil inlet port with the first The pressure of the six oil inlets is connected, and the oil inlet with higher pressure among the two is communicated with the seventh oil outlet, so that the hydraulic oil with higher pressure enters the second relief valve.

In some examples, the hydraulic system further includes a third hydraulic motor connected to the third oil outlet of the flow regulating valve and arranged in parallel with the second hydraulic motor.

In some examples, the hydraulic system further includes a third reversing valve, the third reversing valve includes a seventh oil inlet, an eighth oil outlet, a fifth working port and a sixth working port, the first Three hydraulic motors include a fifth port and a sixth port, the seventh oil inlet is connected to the third oil outlet, the fifth working port is connected to the fifth port, and the sixth working port is connected to To the sixth port, the eighth oil outlet is connected to the drain port.

In some examples, the hydraulic system further includes a first hydraulic cylinder connected to the third oil outlet of the flow regulating valve and arranged in parallel with the second hydraulic motor.

In some examples, the hydraulic system further includes a fourth reversing valve, the fourth reversing valve includes an eighth oil inlet, a ninth oil outlet, a seventh working port and an eighth working port, the first A hydraulic cylinder includes a seventh port and an eighth port, the eighth oil inlet is connected to the third oil outlet, the seventh working port is connected to the seventh port, and the eighth working port is connected to to the eighth port, and the ninth oil outlet is connected to the oil drain port.

In some examples, the hydraulic system further includes a second hydraulic cylinder arranged in parallel with the first hydraulic cylinder, the second hydraulic cylinder includes a ninth port and a tenth port, and the seventh working port is connected to the The ninth interface, the eighth working interface is connected to the tenth interface.

In some examples, the hydraulic system further includes a diverter valve, the diverter valve includes a first end, a second end and a third end, the first end of the diverter valve is connected to the eighth working interface, the The second end of the diverter valve is connected to the tenth port of the second hydraulic cylinder, the third end of the diverter valve is connected to the eighth port of the first hydraulic cylinder, and the diverter valve is configured In order to make the ratio of the flow rate of the first hydraulic cylinder and the flow rate of the second hydraulic cylinder fixed.

In some examples, the hydraulic system further includes a balance valve, the first end of which is connected to the seventh working port and the seventh port of the first hydraulic cylinder or the second hydraulic cylinder Between the ninth port, the second end of the balance valve is connected between the eighth working port and the first end of the diverter valve, the balance valve is configured to balance the first hydraulic pressure cylinder flow and the flow of the second hydraulic cylinder.

In some examples, the hydraulic system further includes: a hydraulic oil tank; a filter connected between the inlet of the hydraulic pump and the hydraulic oil tank; and a third relief valve, the third relief valve of the third relief valve One end is connected between the outlet of the hydraulic pump and the priority flow distribution valve, and the second end of the third overflow valve is connected to the hydraulic oil tank.

In some examples, the hydraulic system further includes a thermostat and a radiator, the inlet of the radiator is connected to the oil drain port, the outlet of the radiator is connected to the hydraulic oil tank, and the thermostat includes a second an inlet, a first outlet and a second outlet, the first inlet is connected to the drain port, the first outlet is connected to the hydraulic oil tank, the second outlet is connected to the inlet of the radiator, The radiator is configured to cool hydraulic oil; the thermostat has a set temperature, and when the temperature of the hydraulic oil is lower than the set temperature, the second outlet is closed and the first outlet is opened; When the temperature of the hydraulic oil is greater than or equal to the set temperature, the first outlet is closed and the second outlet is opened.

An embodiment of the present disclosure provides a wire saw machine, including a cutting device, a feeding device, and the hydraulic system provided in any one of the above embodiments, the cutting device includes a wire saw, and the wire saw is configured to cut an object to be cut, The feeding device is configured to adjust the position of the wire saw, the first hydraulic motor is connected with the cutting device; the second hydraulic motor is connected with the feeding device.

In some examples, the wire saw machine further includes a bracket and a cutting angle adjusting device, the cutting angle adjusting device is respectively connected to the bracket and the cutting device, and the cutting angle adjusting device is configured to adjust the Angle with the bracket.

Description of drawings

In order to illustrate the technical solutions of the embodiments of the present disclosure more clearly, the accompanying drawings of the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description only relate to some embodiments of the present disclosure, rather than limiting the present disclosure .

1 is a schematic plan view of a wire saw machine according to an embodiment of the present disclosure;

Fig. 2 is a three-dimensional structural schematic diagram of a wire saw machine according to an embodiment of the present disclosure;

3 is a schematic plan view of another wire saw machine according to an embodiment of the present disclosure;

4 is a schematic diagram of the principle and structure of a hydraulic system according to an embodiment of the present disclosure; and

FIG. 5 is an enlarged view of the dotted frame in FIG. 4 .

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the present disclosure clearer, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present disclosure. Apparently, the described embodiments are some of the embodiments of the present disclosure, not all of them. Based on the described embodiments of the present disclosure, all other embodiments obtained by persons of ordinary skill in the art without creative effort fall within the protection scope of the present disclosure.

Unless otherwise defined, the technical terms or scientific terms used in the present disclosure shall have the usual meanings understood by those skilled in the art to which the present disclosure belongs. "First", "second" and similar words used in the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. "Comprising" or "comprising" and similar words mean that the elements or items appearing before the word include the elements or items listed after the word and their equivalents, without excluding other elements or items. Words such as "connected" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

Embodiments of the present disclosure provide a hydraulic system of a wire saw machine and the wire saw machine. The hydraulic system of the wire saw machine includes a hydraulic pump, a priority flow distribution valve, a first hydraulic motor, a second hydraulic motor and an oil drain port, the first hydraulic motor is configured to drive the cutting device of the wire saw machine to move, and the second hydraulic motor A feed device configured to drive movement of a wire saw machine. The priority flow distribution valve includes a first oil inlet, a first oil outlet and a second oil outlet, the first oil outlet is configured to output a constant flow, the second oil outlet is configured to output a remaining flow, and the first oil outlet is configured to output a remaining flow. The oil inlet is connected to the hydraulic pump, the first oil outlet is connected to the second hydraulic motor, and the second oil outlet is connected to the first hydraulic motor.

The hydraulic system of the wire saw machine makes the flow distributed to the first hydraulic motor, the second hydraulic motor and other actuators more stable by setting the priority flow distribution valve, so that the speed of the wire saw is stable. Compared with the existing single pump The driving hydraulic system improves the cutting efficiency and operation safety of the wire saw machine. In addition, the hydraulic system of the wire saw machine is a single-pump driven hydraulic system, which reduces the cost of the hydraulic system and the difficulty of arranging equipment and pipelines compared with the existing double-pump driven hydraulic system.

The hydraulic system of the wire saw machine and the wire saw machine provided by the embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings.

An embodiment of the present disclosure provides a wire saw machine. FIG. 1 is a schematic plan view of the wire saw machine, and FIG. 2 is a three-dimensional schematic view of the wire saw machine. As shown in Figures 1 and 2, the wire saw machine includes a cutting device CD, a feeding device FD, and a hydraulic system for controlling the cutting device CD and the feeding device FD. The cutting device CD includes a wire saw CD1, the wire saw CD1 is configured to cut the object to be cut, and the wire saw CD1 can be a diamond wire saw; the feeding device FD is configured to adjust the relative position between the wire saw CD1 and the object to be cut, namely cutting position. The hydraulic system includes feed control system and cutting control system. The feed control system includes a feed motor, which is connected to the feed device FD to drive the feed device FD to move, thereby adjusting the cutting position of the wire saw CD1; the cutting control system includes a cutting motor, which is connected to the cutting device CD , to drive the cutting device CD to move, thereby driving the wire saw CD1 to cut. For example, both the feed motor and the cutting motor are hydraulic motors. For example, the wire saw machine may be a diamond wire saw machine.

The wire saw machine provided by the embodiment of the present disclosure can cut the object to be cut by the wire saw.

In some examples, as shown in Figure 1, the cutting device CD of the wire saw machine can include a driving wheel CD2 and a plurality of driven wheels CD3, the wire saw CD1 is wound on the driving wheel CD2 and the driven wheel CD3, and the driving wheel CD2 and the cutting motor connected (the cutting motor is not shown in Fig. 1 and Fig. 2, which may be located under the driving wheel CD2 in Fig. Turn clockwise. For example, in the normal cutting work of the wire saw machine, the wire saw CD1 rotates clockwise in Figure 1; in some special cases, such as when the wire saw is stuck during cutting, the wire saw CD1 can rotate along Turn it counterclockwise to release it from being stuck.

In some examples, as shown in FIG. 2 , the position of the dotted frame F is the installation position of the feed motor, and the feed motor is connected to the gear transmission mechanism to drive the wire saw forward or backward.

As shown in FIG. 2 , the wire saw machine may further include a support S and a cutting angle adjusting device AD, and the cutting angle adjusting device AD is configured to adjust the angle between the cutting device CD and the support S. For example, the cutting angle adjusting device AD is respectively connected to the support S and the cutting device CD, and by adjusting the angle between the support S and the cutting device CD, the angle between the cutting device CD and the object to be cut can be adjusted. For example, the cutting angle adjusting device AD can adjust the cutting angle by expanding and contracting the hydraulic cylinder.

Fig. 3 is a schematic plan view of another wire saw machine. As shown in Fig. 3, the wire saw machine may further include a clamping device HD. For example, the clamping device HD may include two hydraulic cylinders HD1 and two claws HD2, and the two hydraulic cylinders can be stretched to make the two claws approach or move away, thereby clamping or loosening the object to be cut. Of course, other numbers of hydraulic cylinders and claws may also be used, and the embodiments of the present disclosure do not limit the specific numbers of hydraulic cylinders and claws.

In the wire saw machine provided by the embodiments of the present disclosure, each component of the hydraulic system is a hydraulic component and does not contain electrical components, so it is more suitable for long-term underwater operations, such as underwater pipeline cutting operations. By setting the clamping device, the cutting precision and cutting stability can be improved, and by setting the cutting angle adjustment device, the cutting range and cutting flexibility can be improved.

An embodiment of the present disclosure provides a hydraulic system for driving the above-mentioned wire saw machine, and FIG. 4 is a schematic diagram of the principle and structure of the hydraulic system. As shown in FIG. 4 , the hydraulic system includes a hydraulic pump 2 , a priority flow distribution valve 6 , a first hydraulic motor 9 , a second hydraulic motor 10 and an oil drain port D. The first hydraulic motor 9 is configured to drive the cutting device CD of the wire saw machine to move, and the second hydraulic motor 10 is configured to drive the feed device FD of the wire saw machine to move. The priority flow distribution valve 6 includes a first oil inlet 61, a first oil outlet 62 and a second oil outlet 63, the first oil outlet 62 is configured to output a constant flow, and the second oil outlet 63 is configured to output remaining traffic. The first oil inlet 61 of the priority flow distribution valve 6 is connected to the hydraulic pump 2, the first oil outlet 62 of the priority flow distribution valve 6 is connected to the second hydraulic motor 10, and the second oil outlet 63 of the priority flow distribution valve 6 Connected to the first hydraulic motor 9.

For example, the hydraulic pump 2 can be a variable displacement plunger pump, or a fixed displacement pump, a pressure cutoff pump, a load sensing pump, etc., and its output flow can be adjusted by adjusting the engine speed.

For example, the first hydraulic motor 9 is the above-mentioned cutting motor configured to drive the wire saw to rotate; the second hydraulic motor 10 is the above-mentioned feed motor configured to drive the wire saw to approach or move away from the object to be cut.

For example, the working pressure of the first hydraulic motor 9 is higher than the working pressure of the second hydraulic motor 10 . Embodiments of the present disclosure include, but are not limited to.

When the first hydraulic motor 9 and the second hydraulic motor 10 work at the same time, the priority flow distribution valve 6 can divide the flow delivered by the hydraulic pump 2 into a specified flow and flow out from the first oil outlet 62 (also called the priority port). , and then enters the second hydraulic motor 10 to drive the movement of the feeding device FD; the remaining flow flows out from the second oil outlet 63 and then enters the first hydraulic motor 9 to drive the movement of the cutting device CD. In this way, the flow rate of the second hydraulic motor 10 is stable, and the flow rate entering the first hydraulic motor 9 is the flow rate at the outlet of the hydraulic pump 2 minus the flow rate from the first oil outlet 62, which can be adjusted by adjusting the output flow rate of the hydraulic pump 2 In this way, both the first hydraulic motor 9 and the second hydraulic motor 10 can obtain the required, continuous, and stable pressure flow.

In the hydraulic system provided by the embodiments of the present disclosure, by setting the priority flow distribution valve, the flow distributed to the first hydraulic motor, the second hydraulic motor and other actuators is more stable, so that the rotation speed of the wire saw is stable. Some single pump drives the hydraulic system, which improves the cutting efficiency, cutting accuracy and operation safety of the wire saw machine. In addition, the hydraulic system of the wire saw machine is a single-pump driven hydraulic system, which reduces the cost of the hydraulic system and the difficulty of arranging equipment and pipelines compared with the existing double-pump driven hydraulic system.

In some examples, as shown in FIG. 4 , the hydraulic system provided by the embodiments of the present disclosure further includes a flow regulating valve 18 . The flow regulating valve 18 includes a second oil inlet 181 and a third oil outlet 182 . The first oil outlet 62 of the priority flow distribution valve 6 is connected to the second oil inlet 181 of the flow regulating valve 18 , and the third oil outlet 182 of the flow regulating valve 18 is connected to the second hydraulic motor 10 . The flow regulating valve 18 also includes a fourth oil outlet 183 connected to the oil drain D.

The third oil outlet 182 of the flow regulating valve 18 can also be connected to other hydraulic components, such as a third hydraulic motor, a hydraulic cylinder, etc. These hydraulic components can be arranged in parallel with the second hydraulic motor 10 , which will be described in detail later.

By setting the flow regulating valve 18, the flow of hydraulic oil flowing from the first oil outlet 62 of the priority flow distribution valve 6 to the second hydraulic motor 10 or other hydraulic components can be reduced according to actual needs. By setting the priority flow distribution valve 6 and the flow regulating valve 18, the flow distributed to the first hydraulic motor, the second hydraulic motor and other actuators can be made more stable, thereby making the rotation and feeding of the wire saw more stable and improving the performance of the wire saw. The cutting efficiency, cutting precision and operation safety of the machine.

In some examples, as shown in FIG. 4 , the hydraulic system provided by the embodiment of the present disclosure further includes a first reversing valve 8 , and the first hydraulic motor 9 is connected to the priority flow distribution valve 6 through the first reversing valve 8 . The first reversing valve 8 includes a third oil inlet 81 , a fifth oil outlet 82 , a first working port 83 and a second working port 84 . The first hydraulic motor 9 includes a first interface 91 and a second interface 92 . The third oil inlet 81 of the first reversing valve 8 is connected to the second oil outlet 63 of the priority flow distribution valve 6, and the first working port 83 of the first reversing valve 8 is connected to the first hydraulic motor 9. The port 91 , the second working port 84 of the first reversing valve 8 is connected to the second port 92 of the first hydraulic motor 9 , and the fifth oil outlet 82 of the first reversing valve 8 is connected to the drain port D.

For example, the first selector valve 8 includes a first passage and a second passage. In the first passage, the hydraulic oil flows through the third oil inlet 81, the first working port 83, the first port 91, the second port 92, the second working port 84, and the fifth oil outlet 82; In the second passage, the hydraulic oil flows through the third oil inlet 81 , the second working port 84 , the second port 92 , the first port 91 , the first working port 83 and the fifth oil outlet 82 in sequence.

For example, the first reversing valve 8 may be a manual reversing valve, which also includes an off position. When the reversing valve is in the off position, the reversing valve is closed, and each passage cannot be communicated. The operator can push the handle of the first reversing valve 8 to reversing, so that the first reversing valve 8 can be switched between the first passage, the second passage or the off position. Of course, the first reversing valve 8 may also include more passages, which is not limited in this embodiment of the present disclosure. For example, the first reversing valve 8 may also be a hydraulic reversing valve.

The first reversing valve 8 is used to control the reversing of the first hydraulic motor 9. When the first passage is opened and when the second passage is opened, the rotation directions of the first hydraulic motor 9 are opposite to each other. For example, when the first passage is opened, the first hydraulic motor 9 rotates clockwise in the figure to drive the wire saw to rotate clockwise; when the second passage is opened, the first hydraulic motor 9 rotates counterclockwise in the figure. Rotate to drive the wire saw to rotate counterclockwise; when both the first passage and the second passage are closed, the first hydraulic motor 9 stops rotating. For example, during normal cutting operation, the first channel is connected, and the wire saw rotates clockwise; under special circumstances such as excessive resistance, the second channel is connected, and the wire saw rotates counterclockwise. In this way, the wire saw can be cut normally or reversed when encountering an obstacle. Of course, it can also be that when the first passage is opened, the first hydraulic motor 9 rotates counterclockwise in the figure; when the second passage is opened, the first hydraulic motor 9 rotates clockwise in the figure; When both the passage and the second passage are closed, the first hydraulic motor 9 stops rotating.

In some examples, as shown in FIG. 4 , the hydraulic system provided by the embodiment of the present disclosure further includes a first overflow valve 7 . The first end 71 of the first overflow valve 7 is connected between the second oil outlet 63 of the priority flow distribution valve 6 and the third oil inlet 81 of the first reversing valve 8, the first end of the first overflow valve 7 Two ends 72 are connected to oil drain port D. The first overflow valve 7 is configured to discharge the hydraulic oil to the oil discharge port D when the pressure or the flow output from the second oil outlet 63 of the priority flow distribution valve 6 is too high, so that the first reversing valve 8 and the first hydraulic motor 9 provide overpressure protection. For example, the first overflow valve 7 has a pressure critical value, the first overflow valve opens when the pressure at both ends is greater than the pressure critical value, thereby reducing the pressure at both ends; when the pressure is less than or equal to the pressure critical value, the first overflow valve The flow valve is closed, and the pressure threshold can be set according to actual needs.

In some examples, as shown in FIG. 4 , the hydraulic system provided by the embodiment of the present disclosure further includes a second reversing valve 17 , and the second hydraulic motor 10 is connected to the flow distribution valve 18 through the second reversing valve 17 . The second reversing valve 17 includes a fourth oil inlet 171 , a sixth oil outlet 172 , a third working port 173 and a fourth working port 174 ; the second hydraulic motor 10 includes a third port 101 and a fourth port 102 . The fourth oil inlet 171 of the second reversing valve 17 is connected to the third oil outlet 182 of the flow regulating valve 18, and the third working port 173 of the second reversing valve 17 is connected to the third port of the second hydraulic motor 10 101 , the fourth working port 174 of the second reversing valve 17 is connected to the fourth port 102 of the second hydraulic motor 10 , and the sixth oil outlet 172 of the second reversing valve 17 is connected to the drain port D.

For example, the second switching valve 17 includes a third passage and a fourth passage. In the third passage, the hydraulic oil flows through the fourth oil inlet 171, the third working interface 173, the third interface 101, the fourth interface 102, the fourth working interface 174, and the sixth oil outlet 172; In the fourth passage, the hydraulic oil flows through the fourth oil inlet 171 , the fourth working port 174 , the fourth port 102 , the third port 101 , the third working port 173 and the sixth oil outlet 172 in sequence.

For example, the second reversing valve 17 may be a manual reversing valve, which also includes an off position. When the reversing valve is in the off position, the reversing valve is closed, and each passage cannot be communicated. The operator can push the handle of the second reversing valve 17 to reversing, so that the second reversing valve 17 can be switched between the third passage, the fourth passage or the off position. Of course, the second reversing valve 17 may also include more passages, which is not limited in this embodiment of the present disclosure. For example, the second reversing valve 17 may also be a hydraulic reversing valve.

The second reversing valve 17 is used to control the reversing of the second hydraulic motor 10 , and the rotation directions of the second hydraulic motor 10 are opposite to each other when the third passage is opened and when the fourth passage is opened. For example, when the third passage is opened, the second hydraulic motor 10 rotates clockwise in the figure to drive the wire saw close to the object to be cut; when the fourth passage is opened, the second hydraulic motor 10 rotates counterclockwise in the figure. direction to drive the wire saw away from the object to be cut; when both the third passage and the fourth passage are closed, the second hydraulic motor 10 stops rotating. Of course, it can also be that when the third passage is opened, the second hydraulic motor 10 rotates counterclockwise in the figure to drive the wire saw close to the object to be cut; when the fourth passage is opened, the second hydraulic motor 10 rotates along the Rotate clockwise in order to drive the wire saw away from the object to be cut; when both the third passage and the fourth passage are closed, the second hydraulic motor 10 stops rotating. In this way, the wire saw can be moved forward, backward or stopped.

In some examples, as shown in FIG. 4 , the hydraulic system provided by the embodiment of the present disclosure further includes a second relief valve 15 and a shuttle valve 16 . The shuttle valve 16 includes a fifth oil inlet 161 , a sixth oil inlet 162 and a seventh oil outlet 163 . The fifth oil inlet 161 of the shuttle valve 16 is connected between the third working interface 173 of the second reversing valve 17 and the third interface 101 of the second hydraulic motor 10, and the sixth oil inlet 162 of the shuttle valve 16 is connected to Between the fourth working port 174 of the second reversing valve 17 and the fourth port 102 of the second hydraulic motor 10, the seventh oil outlet 163 of the shuttle valve 16 is connected to the first end 151 of the second overflow valve 15, The second end 152 of the second overflow valve 15 is connected to the oil drain port D. As shown in FIG.

The shuttle valve 16 is configured to compare the pressures of the fifth oil inlet 161 and the sixth oil inlet 162, and communicate the oil inlet with the higher pressure with the seventh oil outlet 163, so that the pressure of the higher pressure oil The oil enters the second relief valve 15, and after the hydraulic oil is pressure-regulated by the second relief valve 15, it enters the second hydraulic motor 10 to control the wire saw to move forward or backward. The second relief valve 15 is configured to discharge the hydraulic oil to the oil discharge port D when the output pressure or flow rate of the seventh oil outlet 163 of the shuttle valve 16 is too high, so as to provide an excess pressure for the second hydraulic motor 10 . pressure protection.

In some examples, as shown in FIG. 4 , the hydraulic system provided by the embodiment of the present disclosure further includes a third hydraulic motor 13 . The third hydraulic motor 13 is connected to the third oil outlet 182 of the flow regulating valve 18 and arranged in parallel with the second hydraulic motor 10 . The third hydraulic motor 13 is arranged in parallel with the second hydraulic motor 10, which means that the hydraulic oil of the third hydraulic motor 13 and the second hydraulic motor 10 all come from the flow regulating valve 18, and return to the oil discharge port D, the third hydraulic motor 13 The hydraulic oil circuit of the second hydraulic motor 10 is independent from each other.

In some examples, as shown in FIG. 4 , the hydraulic system provided by the embodiment of the present disclosure further includes a third reversing valve 20 , and the third hydraulic motor 13 can be connected to the third port of the flow regulating valve 18 through the third reversing valve 20 . Oil outlet 182. The third reversing valve 20 includes a seventh oil inlet 201 , an eighth oil outlet 202 , a fifth working port 203 and a sixth working port 204 ; the third hydraulic motor 13 includes a fifth port 131 and a sixth port 132 . The seventh oil inlet 201 of the third reversing valve 20 is connected to the third oil outlet 182 of the flow distribution valve 18, and the fifth working port 203 of the third reversing valve 20 is connected to the fifth port of the third hydraulic motor 13 131 , the sixth working port 204 of the third reversing valve 20 is connected to the sixth port 132 of the third hydraulic motor 13 , and the eighth oil outlet 202 of the third reversing valve 20 is connected to the drain port D.

For example, the third switching valve 20 includes a fifth passage and a sixth passage. In the fifth passage, the hydraulic oil flows through the seventh oil inlet 201, the fifth working interface 203, the fifth interface 131, the sixth working interface 204, the sixth interface 132, and the eighth oil outlet 202; In the sixth passage, the hydraulic oil flows through the seventh oil inlet 201 , the sixth working port 204 , the sixth port 132 , the fifth port 131 , the fifth working port 203 and the eighth oil outlet 202 in sequence.

For example, the third reversing valve 20 may be a manual reversing valve, which also includes an open position. When the reversing valve is in the off position, the reversing valve is closed, and each passage cannot be communicated. The operator can push the handle of the third reversing valve 20 to reversing, so that the third reversing valve 20 can be switched between the fifth passage, the sixth passage or the disconnection position. Of course, the third reversing valve 20 may also include more passages, which is not limited in this embodiment of the present disclosure. For example, the third reversing valve 20 may also be a hydraulic reversing valve.

For example, the hydraulic components of the hydraulic system provided by the embodiments of the present disclosure are connected through hydraulic pipelines. For example, wire saw machines also include drums, which are used to wind hydraulic lines of hydraulic systems. The third hydraulic motor 13 is used to drive the drum to rotate to wind the hydraulic pipeline. Of course, the third hydraulic motor 13 can also be used to drive other functional elements, and embodiments of the present disclosure include but are not limited thereto.

The third reversing valve 20 is used to control the reversing of the third hydraulic motor 13 so as to drive the drum to rotate to retract or release the hydraulic pipeline. In the case where the fifth passage is opened and in the case where the sixth passage is opened, the rotation directions of the third hydraulic motor 13 are opposite to each other. For example, when the fifth passage is opened, the third hydraulic motor 13 rotates clockwise in the figure to tighten the hydraulic pipeline; when the sixth passage is opened, the third hydraulic motor 13 rotates counterclockwise in the figure, to release the hydraulic pipeline; when both the fifth passage and the sixth passage are closed, the third hydraulic motor 13 stops rotating. Of course, it can also be that when the fifth passage is opened, the third hydraulic motor 13 rotates counterclockwise in the figure to tighten the hydraulic pipeline; when the sixth passage is opened, the third hydraulic motor 13 rotates in the clockwise direction in the figure Turn clockwise to release hydraulic lines.

For example, the hydraulic pipeline of the third hydraulic motor 13 may also be provided with a connected second shuttle valve 23 and a fourth relief valve 24 . The connection mode of the second shuttle valve 23 and the fourth relief valve 24 on the hydraulic pipeline of the third hydraulic motor 13 is similar to that of the shuttle valve 16 and the second relief valve 15 on the hydraulic pipeline of the second hydraulic motor 10 , which will not be described in detail here.

The second shuttle valve 23 is configured to compare the pressures of the fifth working port 203 and the sixth working port 204, and communicate the working port with the higher pressure among the two with the fourth relief valve 24, and the hydraulic oil passes through the fourth relief valve. After the pressure of the valve 24 is adjusted, it enters the third hydraulic motor 13 again. The fourth relief valve 24 is configured to discharge the hydraulic oil to the oil discharge port D when the output pressure or flow rate of the fifth working port 203 or the sixth working port 204 is too high, so as to provide the third hydraulic motor 13 with Overpressure protection.

For example, the third hydraulic motor 13 and the second hydraulic motor 10 do not work at the same time, which can be realized by controlling the second reversing valve 17 and the third reversing valve 20 to not communicate at the same time.

In some examples, as shown in FIG. 4 , the hydraulic system provided by the embodiment of the present disclosure further includes a first hydraulic cylinder 11 a connected to the third oil outlet 182 of the flow regulating valve 18 and arranged in parallel with the second hydraulic motor 10 .

In some examples, as shown in FIG. 4 , the hydraulic system provided by the embodiment of the present disclosure further includes a fourth reversing valve 21 . Figure 5 is an enlarged view of the dotted frame position in Figure 4, to more clearly show each interface of the second reversing valve 17, the third reversing valve 20 and the fourth reversing valve 21.

As shown in FIG. 4 and FIG. 5 , the fourth reversing valve 21 includes an eighth oil inlet 211 , a ninth oil outlet 212 , a seventh working interface 213 and an eighth working interface 214 . The first hydraulic cylinder 11a includes a seventh port 11a1 and an eighth port 11a2. The eighth oil inlet 211 of the fourth reversing valve 21 is connected to the third oil outlet 182 of the flow regulating valve 18, and the seventh working port 213 of the fourth reversing valve 21 is connected to the seventh port of the first hydraulic cylinder 11a 11a1, the eighth working port 214 of the fourth reversing valve 21 is connected to the eighth port 11a2 of the first hydraulic cylinder 11a, and the ninth oil outlet 212 of the fourth reversing valve 21 is connected to the drain port D.

For example, the fourth switching valve 21 includes a seventh passage and an eighth passage. In the seventh passage, the hydraulic oil flows through the eighth oil inlet 211, the seventh working port 213, the seventh port 11a1, the eighth working port 214, the eighth port 11a2, and the ninth oil outlet 212; In the eighth passage, the hydraulic oil flows through the eighth oil inlet 211 , the eighth working port 214 , the eighth port 11a2 , the seventh port 11a1 , the seventh working port 213 , and the ninth oil outlet 212 .

For example, the fourth reversing valve 21 may be a manual reversing valve, which also includes a disconnection position. When the reversing valve is in the off position, the reversing valve is closed, and each passage cannot be communicated. The operator can push the handle of the fourth reversing valve 21 to reversing, so that the fourth reversing valve 21 can be switched between the seventh passage, the eighth passage or the off position. Of course, the fourth reversing valve 21 may also include more passages, which is not limited in this embodiment of the present disclosure. For example, the fourth reversing valve 21 may also be a hydraulic reversing valve.

For example, as shown in FIG. 3 , the first hydraulic cylinder 11a may be one of the hydraulic cylinders HD1 driving the clamping device HD, and used to drive the movement of the claw HD2. For another example, as shown in FIG. 2 , the first hydraulic cylinder 11 a can also be used to drive the cutting angle adjusting device AD. Alternatively, the first hydraulic cylinder 11a can also be used to drive other functional elements.

The fourth reversing valve 21 is used to control the expansion and contraction of the first hydraulic cylinder 11a. For example, when the seventh passage is opened, the first hydraulic cylinder 11a is extended; when the eighth passage is opened, the first hydraulic cylinder 11a is shortened; when both the seventh and eighth passages are closed, the first hydraulic cylinder 11a is stopped. Of course, it is also possible that when the seventh passage is opened, the first hydraulic cylinder 11a is shortened; when the eighth passage is opened, the first hydraulic cylinder 11a is extended.

For example, the hydraulic pipeline of the first hydraulic cylinder 11a may also be provided with a third shuttle valve 25 and a fifth relief valve 26 connected thereto. The connection mode of the third shuttle valve 25 and the fifth relief valve 26 on the hydraulic line of the first hydraulic cylinder 11a is similar to that of the shuttle valve 16 and the second relief valve 15 on the hydraulic line of the second hydraulic motor 10 , which will not be described in detail here.

The third shuttle valve 25 is configured to compare the pressures of the seventh working port 213 and the eighth working port 214, and communicate the working port with the higher pressure among the two with the fifth relief valve 26, and the hydraulic oil flows through the fifth relief valve. After the pressure is adjusted by the valve 26, it enters the first hydraulic cylinder 11a. The fifth overflow valve 26 is configured to discharge the hydraulic oil to the oil discharge port D when the output pressure or flow rate of the seventh working port 213 or the eighth working port 214 is too high, so as to provide the first hydraulic cylinder 11a with Overpressure protection.

For example, at most one of the first hydraulic cylinder 11a, the third hydraulic motor 13 and the second hydraulic motor 10 is in the working state at the same time, which can be controlled by controlling the second reversing valve 17, the third reversing valve 20 and the fourth reversing valve. Reversing valve 21 is not simultaneously connected to realize.

In some examples, as shown in FIG. 4 and FIG. 5 , the hydraulic system provided by the embodiment of the present disclosure further includes a second hydraulic cylinder 11 b arranged in parallel with the first hydraulic cylinder 11 a. The second hydraulic cylinder 11b includes a ninth port 11b1 and a tenth port 11b2, the seventh working port 213 of the fourth reversing valve 21 is connected to the ninth port 11b1 of the second hydraulic cylinder 11b, the eighth working port 213 of the fourth reversing valve 21 The working port 214 is connected to the tenth port 11b2 of the second hydraulic cylinder 11b.

The second hydraulic cylinder 11b and the first hydraulic cylinder 11a both use the fourth reversing valve 21 as a reversing switch, and both can work simultaneously.

For example, as shown in FIG. 3 , the second hydraulic cylinder 11 b can also be one of the hydraulic cylinders HD1 driving the clamping device HD, and is used to drive the claw HD2 to move. For another example, as shown in FIG. 2 , the second hydraulic cylinder 11 b can also be used to drive the cutting angle adjusting device AD. Alternatively, the second hydraulic cylinder 11b can also be used to drive other functional elements.

In some examples, as shown in FIG. 4 , the hydraulic system provided by the embodiments of the present disclosure further includes a diverter valve 12 . As shown in FIGS. 4 and 5 , the diverter valve 12 includes a first end 121 , a second end 122 and a third end 123 , and the first end 121 of the diverter valve 12 is connected to the eighth working interface 214 of the fourth reversing valve 21 , the second end 122 of the diverter valve 12 is connected to the tenth port 11b2 of the second hydraulic cylinder 11b, and the third end 123 of the diverter valve 12 is connected to the eighth port 11a2 of the first hydraulic cylinder 11a.

The diverter valve 12 is connected to the hydraulic lines of the first hydraulic cylinder 11a and the second hydraulic cylinder 11b, and is configured to make the ratio of the flow rate of the first hydraulic cylinder 11a and the flow rate of the second hydraulic cylinder 11b fixed, for example, make the first hydraulic cylinder 11a The flow rate of the cylinder 11a is the same as that of the second hydraulic cylinder 11b. By setting the diverter valve 12, it is possible to ensure that the actions of the first hydraulic cylinder 11a and the second hydraulic cylinder 11b move synchronously or in proportion to improve the action accuracy of the actuator. For example, when the first hydraulic cylinder 11a and the second hydraulic cylinder 11b are respectively used as two hydraulic cylinders HD1 to drive the claw HD2 of the clamping device HD, the synchronous movement of the two can make the two claws approach or move away from each other at the same time, Improve clamping effect. For another example, when the first hydraulic cylinder 11a and the second hydraulic cylinder 11b are respectively used to drive the cutting angle adjusting device AD, the synchronous movement of the two can improve the cutting angle adjustment accuracy.

For example, the hydraulic system provided by the embodiment of the present disclosure can also be provided with a larger number of hydraulic cylinders, which are arranged in parallel with the first hydraulic cylinder 11a and the second hydraulic cylinder 11b, and jointly use the fourth reversing valve 21 as a reversing switch. Hydraulic cylinders can work simultaneously.

In some examples, as shown in FIG. 4 , the hydraulic system provided by the embodiments of the present disclosure further includes a balance valve 14 . The first end 141 of the balance valve 14 is connected between the seventh working port 213 of the fourth reversing valve 21 and the seventh port 11a1 of the first hydraulic cylinder 11a or the ninth port 11b1 of the second hydraulic cylinder 11b. The balance valve 14 The second end 142 of the second reversing valve 21 is connected between the eighth working interface 214 of the fourth reversing valve 21 and the first end 121 of the diverter valve 12 .

The balance valve 14 is configured to balance the flow of the first hydraulic cylinder 11a and the flow of the second hydraulic cylinder 11b. The first hydraulic cylinder 11a and the second hydraulic cylinder 11b will be affected by the load during operation, so that pressure changes will occur, and such pressure changes may cause the hydraulic cylinders to malfunction. The balance valve 14 can reduce or remove the pressure change caused by the load, so as to prevent the first hydraulic cylinder 11a and the second hydraulic cylinder 11b from malfunctioning.

For example, the hydraulic system provided by the embodiment of the present disclosure can also be provided with other functional elements, and other functional elements can be connected with the hydraulic pipeline of the second hydraulic motor 10, the hydraulic pipeline of the third hydraulic motor 13, the first hydraulic cylinder 11a and The hydraulic lines of the second hydraulic cylinder 11b are arranged in parallel to realize other functions.

In some examples, as shown in FIG. 4 , the hydraulic system provided by the embodiment of the present disclosure further includes a hydraulic oil tank 22 , a filter 1 and a third relief valve 3 . The filter 1 is connected between the inlet of the hydraulic pump 2 and the hydraulic oil tank 22; the first end 31 of the third overflow valve 3 is connected between the outlet of the hydraulic pump and the priority flow distribution valve 6, and the third overflow valve 3 The second end 32 is connected to the hydraulic tank 22 . Filter 1 is used to filter out impurities in the hydraulic oil. The third relief valve 3 is configured to discharge the hydraulic oil to the oil discharge port D when the output pressure or flow rate of the hydraulic pump 2 is too high, thereby providing Overpressure protection.

In some examples, as shown in FIG. 4 , the hydraulic system further includes a pressure gauge 4 connected to the outlet of the hydraulic pump 2 for measuring the output pressure of the hydraulic pump 2 .

In some examples, as shown in FIG. 4 , the hydraulic system provided by the embodiment of the present disclosure further includes a thermostat 5 and a radiator 19 . The inlet of the radiator 19 is connected to the drain port D, and the outlet of the radiator is connected to the hydraulic oil tank 22 . The thermostat 5 includes a first inlet A, a first outlet B and a second outlet C. The first inlet A of the thermostat 5 is connected to the drain port D, the first outlet B of the thermostat 5 is connected to the hydraulic oil tank 22 , and the second outlet C of the thermostat 5 is connected to the inlet of the radiator 19 . The radiator 19 is configured to cool hydraulic oil. The thermostat 5 has a set temperature. When the temperature of the hydraulic oil is lower than the set temperature, the second outlet C is closed and the first outlet B is opened. At this time, the hydraulic oil coming in from the drain port D can directly enter the hydraulic oil tank 22 When the temperature of the hydraulic oil is greater than or equal to the set temperature, the first outlet B is closed, and the second outlet C is opened. At this time, the hydraulic oil coming in from the drain port D is first cooled by the radiator 19, and then enters the hydraulic oil tank 22. By setting the thermostat and radiator, it can ensure that the temperature of the hydraulic oil returning to the hydraulic oil tank will not be too high.

The following points need to be explained:

(1) In the drawings of the embodiments of the present disclosure, only the structures related to the embodiments of the present disclosure are involved, and other structures may refer to general designs.

(2) In the case of no conflict, features in the same embodiment and different embodiments of the present disclosure can be combined with each other.

The above is only a specific embodiment of the present disclosure, but the scope of protection of the present disclosure is not limited thereto. Anyone skilled in the art can easily think of changes or substitutions within the technical scope of the present disclosure, and should cover all within the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be determined by the protection scope of the claims.

Claims

A hydraulic system of a wire saw machine, comprising a hydraulic pump, a priority flow distribution valve, a first hydraulic motor, a second hydraulic motor and an oil drain port, the first hydraulic motor is configured to drive a cutting device of the wire saw machine to move, The second hydraulic motor is configured to drive the feed device of the wire saw machine to move,

Wherein, the priority flow distribution valve includes a first oil inlet, a first oil outlet and a second oil outlet, the first oil outlet is configured to output a constant flow, and the second oil outlet is configured To output the remaining flow, the first oil inlet is connected to the hydraulic pump, the first oil outlet is connected to the second hydraulic motor, and the second oil outlet is connected to the first hydraulic pump. motor.
The hydraulic system according to claim 1, further comprising a flow regulating valve, wherein the flow regulating valve comprises a second oil inlet and a third oil outlet, the first oil outlet is connected to the second oil inlet oil port, the third oil outlet is connected to the second hydraulic motor.
The hydraulic system according to claim 2, wherein the flow regulating valve further comprises a fourth oil outlet connected to the oil drain port.
The hydraulic system according to any one of claims 1-3, further comprising a first reversing valve, wherein the first reversing valve includes a third oil inlet, a fifth oil outlet, a first working interface and a second working interface, the first hydraulic motor includes a first interface and a second interface, the third oil inlet is connected to the second oil outlet, and the first working interface is connected to the first An interface, the second working interface is connected to the second interface, and the fifth oil outlet is connected to the oil drain port.
The hydraulic system according to claim 4, wherein the first reversing valve includes a first passage and a second passage, and in the first passage, the flow direction of the hydraulic oil is to sequentially pass through the third oil inlet port, the first working interface, the first interface, the second interface, the second working interface, and the fifth oil outlet; in the second passage, the flow direction of hydraulic oil is Pass through the third oil inlet, the second working interface, the second interface, the first interface, the first working interface, and the fifth oil outlet in sequence.
The hydraulic system according to claim 4 or 5, further comprising a first relief valve, wherein a first end of the first relief valve is connected to the second oil outlet and the third oil inlet Between, the second end of the first overflow valve is connected to the oil drain port.
The hydraulic system according to claim 2 or 3, further comprising a second reversing valve, wherein the second reversing valve includes a fourth oil inlet, a sixth oil outlet, a third working interface and a fourth working interface. interface, the second hydraulic motor includes a third interface and a fourth interface, the fourth oil inlet is connected to the third oil outlet, the third working interface is connected to the third interface, the The fourth working port is connected to the fourth port, and the sixth oil outlet is connected to the oil drain port.
The hydraulic system according to claim 7, wherein the second reversing valve includes a third passage and a fourth passage, and in the third passage, the flow direction of the hydraulic oil is to sequentially pass through the fourth oil inlet port, the third working port, the third port, the fourth port, the fourth working port, and the sixth oil outlet; in the fourth channel, the flow direction of the hydraulic oil is Pass through the fourth oil inlet, the fourth working interface, the fourth interface, the third interface, the third working interface, and the sixth oil outlet in sequence.
The hydraulic system according to claim 7 or 8, further comprising a second relief valve and a shuttle valve, wherein the shuttle valve comprises a fifth oil inlet, a sixth oil inlet and a seventh oil outlet, the The fifth oil inlet is connected between the third working interface and the third interface, the sixth oil inlet is connected between the fourth working interface and the fourth interface, and the seventh The oil outlet is connected to the first end of the second relief valve, the second end of the second relief valve is connected to the oil discharge port, and the shuttle valve is configured to compare the fifth oil inlet port and the sixth oil inlet, and connect the oil inlet with higher pressure to the seventh oil outlet, so that the hydraulic oil with higher pressure enters the second relief valve.
The hydraulic system according to claim 2 or 3, further comprising a third hydraulic motor connected to the third oil outlet of the flow regulating valve and arranged in parallel with the second hydraulic motor.
The hydraulic system according to claim 10, further comprising a third reversing valve, wherein the third reversing valve comprises a seventh oil inlet, an eighth oil outlet, a fifth working port and a sixth working port, The third hydraulic motor includes a fifth port and a sixth port, the seventh oil inlet is connected to the third oil outlet, the fifth working port is connected to the fifth port, and the sixth The working interface is connected to the sixth interface, and the eighth oil outlet is connected to the oil drain port.
The hydraulic system according to claim 2 or 3, further comprising a first hydraulic cylinder connected to the third oil outlet of the flow regulating valve and arranged in parallel with the second hydraulic motor.
The hydraulic system according to claim 12, further comprising a fourth reversing valve, wherein the fourth reversing valve comprises an eighth oil inlet, a ninth oil outlet, a seventh working port and an eighth working port, The first hydraulic cylinder includes a seventh port and an eighth port, the eighth oil inlet is connected to the third oil outlet, the seventh working port is connected to the seventh port, and the eighth The working port is connected to the eighth port, and the ninth oil outlet is connected to the oil drain port.
The hydraulic system according to claim 13, further comprising a second hydraulic cylinder arranged in parallel with the first hydraulic cylinder, wherein the second hydraulic cylinder comprises a ninth port and a tenth port, and the seventh working port connected to the ninth interface, and the eighth working interface is connected to the tenth interface.
The hydraulic system according to claim 14, further comprising a diverter valve, wherein the diverter valve includes a first end, a second end and a third end, and the first end of the diverter valve is connected to the eighth working interface , the second end of the diverter valve is connected to the tenth port of the second hydraulic cylinder, the third end of the diverter valve is connected to the eighth port of the first hydraulic cylinder, the diverter A valve is configured to fix a ratio of the flow of the first hydraulic cylinder to the flow of the second hydraulic cylinder.
The hydraulic system according to claim 15, further comprising a balance valve, wherein a first end of the balance valve is connected to the seventh working port and the seventh port of the first hydraulic cylinder or the first Between the ninth ports of the two hydraulic cylinders, the second end of the balance valve is connected between the eighth working port and the first end of the diverter valve, and the balance valve is configured to balance the The flow rate of the first hydraulic cylinder and the flow rate of the second hydraulic cylinder.
The hydraulic system according to any one of claims 1-16, further comprising:

Hydraulic tank;

a filter connected between the inlet of the hydraulic pump and the hydraulic tank; and

The third relief valve, the first end of the third relief valve is connected between the outlet of the hydraulic pump and the priority flow distribution valve, the second end of the third relief valve is connected to the Hydraulic tank.
The hydraulic system according to claim 17, further comprising a thermostat and a radiator, wherein the inlet of the radiator is connected to the oil drain port, the outlet of the radiator is connected to the hydraulic oil tank, and the thermostat The device includes a first inlet, a first outlet and a second outlet, the first inlet is connected to the drain port, the first outlet is connected to the hydraulic oil tank, and the second outlet is connected to the radiator The radiator is configured to cool the hydraulic oil; the thermostat has a set temperature, when the temperature of the hydraulic oil is lower than the set temperature, the second outlet is closed, and the first outlet open; when the temperature of the hydraulic oil is greater than or equal to the set temperature, the first outlet is closed and the second outlet is opened.
A wire saw machine comprising a cutting device, a feeding device and a hydraulic system according to any one of claims 1-18, wherein the cutting device comprises a wire saw configured to cut cutting objects, the feeding device is configured to adjust the position of the wire saw, the first hydraulic motor is connected to the cutting device; the second hydraulic motor is connected to the feeding device.
The wire saw machine according to claim 19, further comprising a bracket and a cutting angle adjusting device, wherein the cutting angle adjusting device is respectively connected to the bracket and the cutting device, and the cutting angle adjusting device is configured to adjust the The included angle between the cutting device and the support.