阅读说明：本技术 一种涨紧装置用注油阀 (Oil injection valve for tensioning device ) 是由 魏佑超 廉庆慧 于 2019-10-09 设计创作，主要内容包括：一种涨紧装置用注油阀,包括阀体、注油嘴、溢流阀Ⅰ、溢流阀Ⅱ、单向阀和阀体接头,其特征是所述的阀体设置有进油通道和出油通道,所述的单向阀设置在进油通道和出油通道之间,保证黄油只能从进油通道流向出油通道,所述的注油嘴与进油通道相连接,所述的阀体接头与出油通道相连接,所述的溢流阀Ⅰ与进油通道相连接,所述的溢流阀Ⅱ与出油通道相连接；注油阀上设置溢流阀,解决了注油时履带涨紧程度不精确的问题,同时履带工作时能及时降低黄油缸压力,延长了黄油缸和履带的使用寿命,通过测压接头可以检测黄油缸的压力,及时监控黄油缸的压力情况。(An oil filling valve for a tensioning device comprises a valve body, an oil filling nozzle, an overflow valve I, an overflow valve II, a one-way valve and a valve body joint, and is characterized in that the valve body is provided with an oil inlet channel and an oil outlet channel, the one-way valve is arranged between the oil inlet channel and the oil outlet channel to ensure that butter can only flow from the oil inlet channel to the oil outlet channel, the oil filling nozzle is connected with the oil inlet channel, the valve body joint is connected with the oil outlet channel, the overflow valve I is connected with the oil inlet channel, and the overflow valve II is connected with the oil outlet channel; the overflow valve is arranged on the oil injection valve, the problem that the tensioning degree of the track is not accurate during oil injection is solved, the pressure of the grease cylinder can be timely reduced during the operation of the track, the service lives of the grease cylinder and the track are prolonged, the pressure of the grease cylinder can be detected through the pressure measuring joint, and the pressure condition of the grease cylinder can be timely monitored.)

1. The utility model provides a tight oiling valve for device that rises, includes valve body (1), oil nipple (2), overflow valve I (3), overflow valve II (4), check valve (5) and valve body joint (6), characterized by valve body (1) be provided with oil feed passageway and the passageway of producing oil, check valve (5) set up between oil feed passageway and the passageway of producing oil, oil nipple (2) be connected with the oil feed passageway, valve body joint (6) be connected with the passageway of producing oil, overflow valve I (3) be connected with the oil feed passageway, overflow valve II (4) be connected with the passageway of producing oil.

2. The oil filling valve for a tensioning device according to claim 1, characterized in that the valve body (1) is provided with a pressure measuring joint (7) in the radial direction.

3. The oil filling valve for the tensioning device as claimed in claim 1, wherein a combined sealing gasket is arranged between the oil filling nozzle (2) and the valve body (1).

4. The oil injection valve for the tensioning device according to claim 1, wherein the overflow valve I (3) comprises a valve sleeve (31), a steel ball (32), a steel ball seat (33), a spring (34), a spring seat (35), a screw (36) and a nut (37), the valve sleeve (31) is connected with a threaded hole of the valve body (1), the steel ball (32) is arranged on the steel ball seat (33), the steel ball (32) is in contact connection with an overflow port of the valve body (1), the spring (34) is arranged in the spring seat (35), the spring (34) is in contact connection with the steel ball seat (33), the screw (36) is connected with the spring seat (35), and the nut (37) is connected with the screw (36).

5. The oil filling valve for the tensioning device as claimed in claim 4, wherein a combined sealing gasket is arranged between the valve sleeve (31) and the valve body (1).

6. The oil filling valve for the tensioning device as claimed in claim 1, wherein the overflow pressure value of the overflow valve I (3) is set to be 5 MPa.

7. The oil filling valve for the tensioning device as claimed in claim 1, wherein the overflow pressure value of the overflow valve II (4) is set to be 20 MPa.

Technical Field

The invention relates to the technical field of machine manufacturing, in particular to an oil injection valve for a tensioning device.

Background

On the tensioning device of crawler-type engineering machinery, an oil filling valve needs to be used, and the principle of the oil filling valve is as follows: the two one-way valves are overlapped and the device of an oil filling opening is additionally arranged, and the butter can only be filled into the butter cylinder and cannot reversely flow out. However, the prior art has the following disadvantages: grease is injected into a grease cylinder of the tensioning device to enable the crawler belt to be tensioned, the degree of the crawler belt tensioning is judged visually, the crawler belt tensioning is too loose or too tight due to the existence of visual errors, the phenomenon of tooth jumping occurs after the crawler belt is loose, the crawler belt is tight, the abrasion of parts is aggravated, and the service life is shortened; after the crawler belt is tensioned, in the working process of the crawler belt type machinery, due to overload, the pressure in the yellow oil cylinder can be increased rapidly, the service life of a sealing element can be influenced, leakage is possibly caused, the crawler belt is in a tensioned state, the service life of the crawler belt is shortened, and the crawler belt can be tensioned and broken in severe cases.

Disclosure of Invention

In order to solve the problems, the invention provides an oil injection valve for a tensioning device, and provides the oil injection valve for the tensioning device with an overflow function. In order to achieve the purpose, the invention adopts the technical scheme that: the utility model provides a tight oiling valve for device that rises, includes valve body, oil nozzle, overflow valve I, overflow valve II, check valve and valve body joint, the valve body be provided with oil feed passageway and the passageway of producing oil, the check valve setting between oil feed passageway and the passageway of producing oil, guarantee that the butter can only follow oil feed passageway flow direction passageway of producing oil, oil nozzle be connected with the oil feed passageway, the valve body joint be connected with the passageway of producing oil, overflow valve I be connected with the oil feed passageway, overflow valve II be connected with the passageway of producing oil.

Furthermore, a pressure measuring joint is arranged on the valve body in the radial direction and can be connected with a pressure gauge or other pressure sensors to monitor the pressure in the yellow oil cylinder.

Further, a combined sealing gasket is arranged between the oil injection nozzle and the valve body.

Furthermore, the overflow valve I comprises a valve sleeve, a steel ball seat, a spring seat, a screw and a nut, wherein the valve sleeve is connected with a threaded hole of the valve body, the steel ball is arranged on the steel ball seat and is in contact connection with an overflow port of the valve body, the spring is arranged in the spring seat and is in contact connection with the steel ball seat, the screw is connected with the spring seat, and the nut is connected with the screw and locks the screw.

Further, a combined sealing gasket is arranged between the valve sleeve and the valve body.

Furthermore, the structure of the overflow valve II is the same as that of the overflow valve I.

Further, the overflow pressure value of the overflow valve I is set to be 5 MPa.

Further, the overflow pressure value of the overflow valve II is set to be 35 MPa.

Compared with the prior art, the invention has the following beneficial effects: the overflow valve is arranged on the oil injection valve, the problem that the tensioning degree of the track is not accurate during oil injection is solved, the pressure of the grease cylinder can be timely reduced during the operation of the track, the service lives of the grease cylinder and the track are prolonged, the pressure of the grease cylinder can be detected through the pressure measuring joint, and the pressure condition of the grease cylinder can be timely monitored.

Drawings

The present invention is described in further detail below with reference to the attached drawings.

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic top view of a pressure tap;

FIG. 3 is a schematic diagram of the oiling technique of the present invention;

in the drawings: 1. the oil injection valve comprises a valve body, 2, an oil injection nozzle, 3, overflow valves I and 31, a valve sleeve, 32, a steel ball, 33, a steel ball seat, 34, a spring, 35, a spring seat, 36, a screw, 37, a nut, 4, overflow valves II and 5, a one-way valve, 6, a valve body joint, 7 and a pressure measuring joint.

Detailed Description

In order to make the technical solutions of the present invention better understood by those skilled in the art, the present invention will be further described with reference to fig. 1, fig. 2, and fig. 3, and specific embodiments.

As shown in attached drawings 1 and 2, the oil filling valve for the tensioning device comprises a valve body 1, an oil filling nozzle 2, an overflow valve I3, an overflow valve II 4, a one-way valve 5 and a valve body connector 6, wherein the valve body 1 is provided with an oil inlet channel and an oil outlet channel, the one-way valve 5 is arranged between the oil inlet channel and the oil outlet channel, and is used for ensuring that butter can only flow to the oil outlet channel from the oil inlet channel, the oil filling nozzle 2 is connected with the oil inlet channel, the valve body connector 6 is connected with the oil outlet channel, the overflow valve I3 is connected with the oil inlet channel, and the overflow valve II 4 is connected with the oil outlet channel.

Furthermore, a pressure measuring joint 7 is arranged on the valve body 1 in the radial direction and can be connected with a pressure gauge or other pressure sensors to monitor the pressure in the yellow oil cylinder.

Further, a combined sealing gasket is arranged between the oil injection nozzle 2 and the valve body 1.

Further, the overflow valve I3 comprises a valve sleeve 31, a steel ball 32, a steel ball seat 33, a spring 34, a spring seat 35, a screw 36 and a nut 37, the valve sleeve 31 is connected with a threaded hole of the valve body 1, the steel ball 32 is arranged on the steel ball seat 33, the steel ball 32 is in contact connection with an overflow port of the valve body 1, the spring 34 is arranged in the spring seat 35, the spring 34 is in contact connection with the steel ball seat 33, the screw 36 is connected with the spring seat 35, the nut 37 is connected with the screw 36, and the screw 36 is locked.

Further, a combined sealing gasket is arranged between the valve sleeve 31 and the valve body 1.

Furthermore, overflow valve II 4 is the same with overflow valve I3's structure.

Further, the relief pressure value of the relief valve I3 is set to 5 MPa.

Further, the relief pressure value of the relief valve II 4 is set to 35 MPa.

The working principle and the working process of the invention are as follows: as shown in fig. 3, in the oil injection process, when the track is tensioned, the pressure in the yellow oil cylinder increases to a certain value P1, the overflow valve i 3 is opened, the re-injected butter overflows from the hole of the screw 36, the butter injected into the yellow oil cylinder cannot flow out due to the reverse stop action of the check valve 5, the overflow pressure of the overflow valve i 3 can be changed by adjusting the screw 36, and the tensioning degree of the track is controlled, so that the previous condition that the tensioning degree of the track is judged by visual observation is avoided, and the existence of a large error is avoided; in the working process of the crawler-type machine, due to overload, the pressure in the grease cylinder can be increased rapidly, when the pressure is increased to a certain pressure P2, the overflow valve II 4 is opened, and high-pressure grease in the grease cylinder can overflow from the screw hole of the overflow valve II 4, so that the grease pressure value in the grease cylinder can not exceed P2, the sealing element of the grease cylinder is protected, the long-time tightening of a crawler is avoided, and the service life of parts is prolonged;

the working principle of the overflow valve I3 is as follows: when the force of the grease acting on the lower end of the steel ball 32 is larger than the force of the spring 34, the grease pushes the steel ball 32 to move upwards, and the grease overflows from the hole of the screw 36 through the gap between the valve sleeve 31 and the steel ball seat 33.

Compared with the prior art, the invention has the following beneficial effects: the overflow valve is arranged on the oil injection valve, the problem that the tensioning degree of the track is not accurate during oil injection is solved, the pressure of the grease cylinder can be timely reduced during the operation of the track, the service lives of the grease cylinder and the track are prolonged, the pressure of the grease cylinder can be detected through the pressure measuring joint, and the pressure condition of the grease cylinder can be timely monitored.

The technical solutions of the present invention or similar technical solutions designed by those skilled in the art based on the teachings of the technical solutions of the present invention are all within the scope of the present invention.