阅读说明：本技术 一种龙门机床用油压回路结构 (Oil pressure loop structure for gantry machine tool ) 是由 徐佳楠 于 2019-09-30 设计创作，主要内容包括：本发明公开了一种龙门机床用油压回路结构,第一吸油滤网与定量轮叶泵相连,第二吸油滤网与引导泵相连,第三吸油滤网与冷冻机相连,定量轮叶泵通过第一止回阀与高压过滤器相连,高压过滤器远离第一止回阀一端分别与电磁阀及高速比例阀相连,电磁阀通过节流止回阀及引导止回阀与工作台定位缸相连,高速比例阀与床台驱动液压缸相连,引导泵通过第二止回阀分别与两个配重阀相连,每个配重阀均与一个Z轴配重缸相连,该发明结构合理,冷冻机将油箱内的油进行循环冷却,较传统的风冷效果更好,避免油温过道导致机床停止工作,设置两个配重阀及Z轴配重缸,完全避免断电滑落的情况出现,避免不必要的损失,且安全系数更高。(The invention discloses an oil pressure loop structure for a gantry machine tool, wherein a first oil suction filter screen is connected with a quantitative impeller pump, a second oil suction filter screen is connected with a guide pump, a third oil suction filter screen is connected with a refrigerator, the quantitative impeller pump is connected with a high-pressure filter through a first check valve, one end of the high-pressure filter, far away from the first check valve, is respectively connected with an electromagnetic valve and a high-speed proportional valve, the electromagnetic valve is connected with a worktable positioning cylinder through a throttling check valve and a guide check valve, the high-speed proportional valve is connected with a bed table driving hydraulic cylinder, the guide pump is respectively connected with two counterweight valves through a second check valve, each counterweight valve is connected with a Z-axis counterweight cylinder, the structure of the invention is reasonable, the refrigerator carries out circulating cooling on oil in an oil tank, the effect is better than the traditional air cooling effect, the machine tool stop caused by an oil temperature passageway is avoided, the two counterweight valves and the Z-, avoid unnecessary loss, and factor of safety is higher.)

1. The utility model provides a gantry is oil pressure loop structure for lathe which characterized in that: comprises an oil tank respirator (1), an oil level meter (2), an oil tank (3), a first oil suction filter screen (4), a second oil suction filter screen (5), a third oil suction filter screen (6), a quantitative wheel vane pump (7), a guide pump (8), a refrigerating machine (9), a first check valve (10), a high-pressure filter (11), an electromagnetic valve (12), a high-speed proportional valve (13), a throttling check valve (14), a guide check valve (15), a workbench positioning cylinder (16), a bed driving hydraulic cylinder (17), a second check valve (18), a counterweight valve (19) and a Z-axis counterweight cylinder (20), wherein the oil tank respirator (1) and the oil level meter (2) are respectively connected with the oil tank (3), the oil tank (3) is internally provided with the first oil suction filter screen (4), the second oil suction filter screen (5) and the third oil suction filter screen (6), and the first oil suction filter screen (4) is connected with the quantitative wheel vane pump (7), second oil absorption filter screen (5) link to each other with guide pump (8), third oil absorption filter screen (6) link to each other with refrigerator (9), ration impeller pump (7) link to each other with high pressure filter (11) through first check valve (10), first check valve (10) one end is kept away from in high pressure filter (11) links to each other with solenoid valve (12) and high-speed proportional valve (13) respectively, solenoid valve (12) link to each other with workstation location jar (16) through throttle check valve (14) and guide check valve (15), high-speed proportional valve (13) link to each other with bed platform drive pneumatic cylinder (17), guide pump (8) link to each other with two counter weight valves (19) respectively through second check valve (18), every counter weight valve (19) all link to each other with a Z axle counter weight jar (20).

2. The oil pressure circuit structure for a gantry machine tool according to claim 1, characterized in that: still be provided with air-vent valve (21) and first manometer (22) in the middle of first check valve (10) and high pressure filter (11), air-vent valve (21) and first manometer (22) keep away from first check valve (10) one end and workstation positioning cylinder (16) and the oil return line of bed platform drive pneumatic cylinder (17) and link to each other, the oil return line of workstation positioning cylinder (16) and bed platform drive pneumatic cylinder (17) sets up in oil tank (3).

3. The oil pressure circuit structure for a gantry machine tool according to claim 1, characterized in that: and a pressure switch (23) and a second pressure gauge (24) are arranged between the second check valve (18) and the counterweight valve (19).

4. The oil pressure circuit structure for a gantry machine tool according to claim 1, characterized in that: a stop valve (25) is arranged between the third oil suction filter screen (6) and the refrigerator (9), and an oil return pipeline of the refrigerator (9) is arranged in the oil tank (3).

5. The oil pressure circuit structure for a gantry machine tool according to claim 1, characterized in that: and third pressure gauges (26) are arranged on the counterweight valves (19).

6. The oil pressure circuit structure for a gantry machine tool according to claim 1, characterized in that: the quantitative impeller pump (7), the guide pump (8) and the refrigerator (9) are all driven by a motor.

Technical Field

The invention relates to the technical field of gantry machine tool oil pressure loops, in particular to an oil pressure loop structure for a gantry machine tool.

Background

Machine tools are machines for manufacturing machines, also called machine tools or machine tools, which are conventionally referred to as machine tools for short. Generally, the machining method is divided into a metal cutting machine, a forging machine, a woodworking machine and the like. The methods for machining machine parts in modern machine manufacturing are numerous: in addition to cutting, casting, forging, welding, pressing, extruding, etc., however, in general, a part requiring high precision and fine surface roughness is finished by cutting on a machine tool. The machine tool plays an important role in the construction of national economy modernization.

The forced air cooling of the many adoption of oil pressure circuit that present longmen lathe adopted, and the forced air cooling need adopt a plurality of fans to dispel the heat, and the energy consumption increases greatly, and occupation space is great, and in the current oil pressure circuit Z counter weight jar adopts one mostly, and the outage condition that drops takes place occasionally, consequently, this kind of problem that exists among the prior art is solved to a quick-witted improved technique of treating urgently.

Disclosure of Invention

The invention aims to provide an oil pressure loop structure for a gantry machine tool, wherein a third oil suction filter screen is connected with a refrigerator, a stop valve is arranged between the third oil suction filter screen and the refrigerator, the refrigerator is used for circularly cooling oil in an oil tank, the effect is better than that of traditional air cooling, the machine tool is prevented from stopping working due to an oil temperature passageway, two counterweight valves and a Z-axis counterweight cylinder are arranged, the situation of power failure and slipping is completely avoided, unnecessary loss is avoided, the safety coefficient is higher, and the problems in the background art are solved.

In order to achieve the purpose, the invention provides the following technical scheme: an oil pressure loop structure for a gantry machine tool comprises an oil tank breather, an oil level meter, an oil tank, a first oil suction filter screen, a second oil suction filter screen, a third oil suction filter screen, a quantitative impeller pump, a guide pump, a refrigerator, a first check valve, a high-pressure filter, an electromagnetic valve, a high-speed proportional valve, a throttling check valve, a guide check valve, a workbench positioning cylinder, a bed driving hydraulic cylinder, a second check valve, a counterweight valve and a Z-axis counterweight cylinder, wherein the oil tank breather and the oil level meter are respectively connected with the oil tank, the oil tank is internally provided with the first oil suction filter screen, the second oil suction filter screen and the third oil suction filter screen, the first oil suction filter screen is connected with the quantitative impeller pump, the second oil suction filter screen is connected with the guide pump, the third oil suction filter screen is connected with the refrigerator, the quantitative impeller pump is connected with the high-pressure filter through the first check valve, one end of the high-pressure filter, which is far, the electromagnetic valve is connected with the workbench positioning cylinder through a throttling check valve and a guide check valve, the high-speed proportional valve is connected with the bed driving hydraulic cylinder, the guide pump is respectively connected with two counterweight valves through second check valves, and each counterweight valve is connected with a Z-axis counterweight cylinder.

Preferably, a pressure regulating valve and a first pressure gauge are further arranged between the first check valve and the high-pressure filter, one ends, far away from the first check valve, of the pressure regulating valve and the first pressure gauge are connected with oil return pipelines of the workbench positioning cylinder and the bed driving hydraulic cylinder, and the oil return pipelines of the workbench positioning cylinder and the bed driving hydraulic cylinder are arranged in the oil tank.

Preferably, a pressure switch and a second pressure gauge are arranged between the second check valve and the counterweight valve.

Preferably, a stop valve is arranged between the third oil suction filter screen and the refrigerator, and an oil return pipeline of the refrigerator is arranged in the oil tank.

Preferably, the counterweight valves are all provided with third pressure gauges.

Preferably, the fixed displacement vane pump, the guide pump, and the interior of the refrigerator are driven by a motor.

Compared with the prior art, the invention has the beneficial effects that:

(1) the third oil absorption filter screen links to each other with the refrigerator, is provided with the stop valve between third oil absorption filter screen and the refrigerator, and the refrigerator carries out circulative cooling with the oil in the oil tank, and is better than traditional forced air cooling effect, avoids oil temperature passageway to lead to lathe stop work.

(2) The second oil absorption filter screen links to each other with two counter weight valves through the guide pump, and two counter weight valves link to each other with two Z axle counter weight jars respectively, set up two counter weight valves and Z axle counter weight jars, avoid the circumstances of outage landing to appear completely, avoid the unnecessary loss, and factor of safety is higher.

Drawings

FIG. 1 is a schematic diagram of a gantry machine hydraulic system.

In the figure: the device comprises an oil tank breather 1, an oil level meter 2, an oil tank 3, a first oil suction filter screen 4, a second oil suction filter screen 5, a third oil suction filter screen 6, a quantitative impeller pump 7, a guide pump 8, a refrigerator 9, a first check valve 10, a high-pressure filter 11, an electromagnetic valve 12, a high-speed proportional valve 13, a throttling check valve 14, a guide check valve 15, a workbench positioning cylinder 16, a bed driving hydraulic cylinder 17, a second check valve 18, a counterweight valve 19, a Z-axis counterweight cylinder 20, a pressure regulating valve 21, a first pressure gauge 22, a pressure switch 23, a second pressure gauge 24, a stop valve 25 and a third pressure gauge 26.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1, the present invention provides a technical solution: an oil pressure loop structure for a gantry machine tool comprises an oil tank breather 1, an oil level meter 2, an oil tank 3, a first oil suction filter screen 4, a second oil suction filter screen 5, a third oil suction filter screen 6, a quantitative impeller pump 7, a guide pump 8, a refrigerating machine 9, a first check valve 10, a high-pressure filter 11, an electromagnetic valve 12, a high-speed proportional valve 13, a throttling check valve 14, a guide check valve 15, a workbench positioning cylinder 16, a bed driving hydraulic cylinder 17, a second check valve 18, a counterweight valve 19 and a Z-axis counterweight cylinder 20, wherein the oil tank breather 1 and the oil level meter 2 are respectively connected with the oil tank 3, the oil tank 3 is internally provided with the first oil suction filter screen 4, the second oil suction filter screen 5 and a third oil suction filter screen 6, the first oil suction filter screen 4 is connected with the quantitative impeller pump 7, the second oil suction filter screen 5 is connected with the guide pump 8, the third oil suction filter screen 6 is connected with the refrigerating machine 9, a stop valve 25 is arranged, an oil return pipeline of the refrigerating machine 9 is arranged in an oil tank 3, the quantitative impeller pump 7, the guide pump 8 and the interior of the refrigerating machine 9 are driven by a motor, the quantitative impeller pump 7 is connected with a high-pressure filter 11 through a first check valve 10, a pressure regulating valve 21 and a first pressure gauge 22 are further arranged between the first check valve 10 and the high-pressure filter 11, one end, far away from the first check valve 10, of the high-pressure filter 11 is respectively connected with an electromagnetic valve 12 and a high-speed proportional valve 13, the electromagnetic valve 12 is connected with a workbench positioning cylinder 16 through a throttling check valve 14 and a guide check valve 15, the high-speed proportional valve 13 is connected with a bed driving hydraulic cylinder 17, one end, far away from the first check valve 10, of the pressure regulating valve 21 and the first pressure gauge 22 is connected with the oil return pipelines of the workbench positioning cylinder 16 and the bed driving hydraulic cylinder 17, the oil return pipelines of the workbench positioning cylinder 16 and the bed driving hydraulic cylinder 17 are arranged in, a pressure switch 23 and a second pressure gauge 24 are arranged between the second check valve 18 and the counterweight valve 19, each counterweight valve 19 is connected with one Z-axis counterweight cylinder 20, and a third pressure gauge 26 is arranged on each counterweight valve 19.

The use method and the principle are as follows: a first oil suction filter screen 4, a second oil suction filter screen 5 and a third oil suction filter screen 6 are respectively arranged in an oil tank 3, the first oil suction filter screen 4 is respectively communicated with a workbench positioning cylinder 16 and a bed driving hydraulic cylinder 17 through a quantitative impeller pump 7, the workbench positioning cylinder 16 and the bed driving hydraulic cylinder 17 are supplied with oil by the quantitative impeller pump 7, the second oil suction filter screen 5 is connected with two counterweight valves 19 through a guide pump 8, the two counterweight valves 19 are respectively connected with two Z-axis counterweight cylinders 20, the two counterweight valves 19 and the Z-axis counterweight cylinders 20 are arranged, the occurrence of power failure slipping is completely avoided, and unnecessary loss is avoided, and factor of safety is higher, and third oil absorption filter screen 6 links to each other with refrigerator 9, is provided with stop valve 25 between third oil absorption filter screen 6 and the refrigerator 9, and refrigerator 9 carries out circulative cooling with the oil in the oil tank 3, and is better than traditional air-cooled effect, avoids the oil temperature passageway to lead to lathe stop work.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.