RU1770672C - Gun for feeding grease - Google Patents

Abstract

Application: for lubricating friction parts of agricultural machines with grease at stations and service stations of agricultural machines. SUMMARY OF THE INVENTION The supply of a pipe, an additional valve and an intermediate element, the spool valve being used to blow the grease fittings of the grease fittings, i.e., the grease fittings are cleaned by blowing and air with the initial actuation of the pressure lever. 2 ill.

Description

The invention relates to the field of maintenance of various machines and mechanisms and can be used to lubricate them through a grease nipple, for example, to lubricate the friction parts of tractors, combines, and other agricultural machines with plastic greases at stations and machine-tractor service stations park, central repair shops of collective farms and state farms.

A grease supply gun is known, comprising a hollow body with an inlet valve for lubrication, a tip connected to the body and a rod connected to the pressure lever mounted in the body in cooperation with a valve closure member and spring-loaded to it.

During machine maintenance, dirt often gets into friction units along with grease due to contamination of the grease nipples and the tips of the dispensing guns, which reduces the reliability of friction units. therefore

Before applying grease, the grease nipple head must be cleaned of dirt.

The known gun does not allow to pre-clean the grease nipple head, therefore either dirt can get into the lubricated assembly or separate head cleaning operations are required, which increases the laboriousness of work, especially when the grease nipple is located in a hard-to-reach place

The purpose of the invention is to reduce the complexity of the work by pre-blowing the grease nipple head.

This goal is achieved in that the gun, comprising a hollow body with an inlet valve for lubrication, a tip connected to the body and a rod connected to the pressure lever, installed in the body in cooperation with the valve locking member and spring-loaded to it, is additionally provided with a pipe coaxially covering the tip , a sleeve with a spool-type valve installed in it, the spool of which is rigidly connected to the stem, as well as the intermediate link

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located between the rod and the locking element, spring-loaded to the latter and connected to the rod with the possibility of limited axial travel, moreover, in the housing there is a channel for connecting a compressed air source, and holes are made in the sleeve and the housing communicating the pipe cavity with the channel.

In FIG. 1 shows a diagram of a pistol, section; figure 2 is a section aa in figure 1.

The gun comprises a housing consisting of an outer cylinder 1 and an inner cylinder 2 fixed therein, between the walls of which an annular channel 3 is formed. An air hose 5 from a compressed air source (not shown) is connected to the inlet 4 of this channel. An inlet valve 6 is installed in the cylinder 2. A high pressure sleeve 8 is connected to the pre-laid cavity 7 to supply lubricant. In the cylinder 2 is also mounted an intermediate link 9 and the rod 10, made with a pusher 11 at the end. The link 9 is pressed against the locking element 12 of the valve 6 using the spring 14 located in the cavity 13 of the cylinder 2, and the rod 10 is pressed against the link 9 using the spring 15 located inside the spring 14.

The link 9 is connected with the rod 10 with the possibility of limited axial stroke, for which it has a shank 16, located between the grippers 17, made on the pusher 11.

A tip 18 is connected to the cylinder 2, half of which is in communication with the cavity 13. A pipe 19 is connected to the cylinder 1 and coaxially surrounds the tip 18.

In the upper part of the cylinder 2, there is a valve of the spool type, the valve 20 of which is made on the stem 10 in the form of two cylindrical strips 21, 22 located with a gap between themselves. The spool 20 is installed in a sleeve 23 mounted on the upper end of the cylinder 2. For communicating the cavity of the pipeline 19 with the channel 3 in the sleeve 23, there are through radial holes 24, and in the upper part of the cylinder 2 installed in the cylinder 1 without a gap - holes 25, 26.

In the area where the pipeline 19 is connected to the cylinder 1, a cylindrical cutout 27 is made in the cylinder 2 for receiving the inlet end of the pipe 19 therein with a gap relative to the end surface 28 of the cutout. Through this gap, the cavity of the pipe 19 is in communication with the hole 26.

The upper end of the rod 10 is connected to the pressure lever 29 by means of a hinge 30. With the cylinder 1 by means of a hinge 31

a bracket 32 is connected on which a pivot axis 33 of the lever 29 is mounted.

The device operates as follows. In the initial position of the lever 29 link

9 is pressed against the locking member 12 of the valve 6 by the spring 14, and the rod 10 is pressed against the link 9 by the spring 15, the valve 6 is closed. In this case, the upper juice 21 of the slide valve 20 overlaps the openings 24; therefore, the cavity of the pipeline 19 is isolated from the cavity of the channel 3 into which compressed air is supplied under a pressure of 6-8 kgf / cm2.

Before applying grease to

any friction unit (not shown) the outlet openings of the tip 18 and the pipe 19 are located in the immediate vicinity of the grease nipple head (not shown) of this assembly and begin to press the lever 29 with a hand, bringing its large shoulder closer to the cylinder 1.

As a result of pressing the lever 29, the rod moves up, the gap between the rails 21, 22 is located opposite the holes 24

and compressed air from the channel 3, passing sequentially through the holes 25, 24, 26, enters the cavity of the pipe 19, blowing pollution from the head of the grease nipple During the initial lifting of the rod

10 by an amount that ensures that the gap is located between the chords 21.22 opposite the holes 24, the pusher 11 moves with the rod 10 upward relative to the link 9, compressing the spring 15,

in this case, the grippers 17 are raised by an amount that is within the limited axial stroke of the rod 10 relative to the link 9. The action of the spring 14 on the link 9 prevents the valve 6 from opening during the flow of compressed air into the pipeline 19.

To add lubricant to the friction unit, the output of the tip 18 is connected to the head of the grease fitting and further pressing the lever 29. In this case, the rod 10 is further raised, the lower juice 22 closes the holes 24, disconnecting the channel 3 with the pipe cavity 19 and thereby blowing the grease fitting, and the grippers 17 by the shank 16 raise the link 9, as a result of which the valve 6 opens, and the grease from the high pressure sleeve 8 enters the cavity of the tip 18 through the cavity 13 of the cylinder 2. After filling the friction unit with grease echnik 18 is removed from interfacing with a grease fitting, the lever 29 is released, the rod

10, by the action of the spring 15, lowers down and takes its initial position.

The use of the proposed gun prevents the penetration of greases into the lubricated unit by pre-cleaning the grease nipple head by blowing with compressed air. Moreover, no special devices and devices are required for blowing.

For one operator’s reception - pressing the gun lever - a preliminary blowing of the grease nipple head and lubrication is carried out, which increases labor productivity,

Claims (1)

The claims A grease gun through a grease nipple, comprising a hollow body with a grease inlet valve, a tip connected to the body and a rod connected to the pressure lever, installed in the body in cooperation with the valve shut-off member and spring-loaded to it, characterized in that that, in order to reduce the complexity of work by pre-blowing the grease nipple head, the gun is equipped with a pipe coaxially covering the tip, a sleeve with a spool type valve installed in it, a spool it is tightly connected to the stem, an intermediate link located between the stem and a locking member, spring-loaded to the latter and connected to the stem with the possibility of limited axial travel, moreover, in the housing there is a channel for connecting a compressed air source, and in the spool valve sleeve and the housing there are holes communicating the cavity of the pipeline with the channel. FS. / Aa /8 FIG. 2