CN108167630B

CN108167630B - Vacuum type hydraulically controlled felling machine lubricating oil injection device

Info

Publication number: CN108167630B
Application number: CN201810042976.3A
Authority: CN
Inventors: 卢青; 莫国强; 文竹; 吕伟
Original assignee: Guangxi Yuchai Heavy Industry Co Ltd
Current assignee: Guangxi Yuchai Heavy Industry Co Ltd
Priority date: 2018-01-17
Filing date: 2018-01-17
Publication date: 2024-04-05
Anticipated expiration: 2038-01-17
Also published as: CN108167630A

Abstract

A vacuum type hydraulically controlled felling machine lubricating oil injection device is characterized in that a P port of the injection device is connected with a control oil port, a T port of the injection device is connected with a lubricating oil tank, a K port of the injection device is connected with a lubricating oil injection nozzle through a hydraulic hose, oil is controlled to enter a valve body from a throttle joint P port, a piston is driven to move from bottom to top to the end, and lubricating oil in the valve body is injected from a one-way valve body; after the injection is finished, the P port of the throttling joint controls pressure relief, the piston moves downwards under the action of a powerful return spring, and meanwhile, the one-way throttling valve core is closed, and the inner cavity of the valve body is in a vacuum state; when the tail end of the piston moves to the position of the oil inlet T, lubricating oil enters the inner cavity of the valve body under the action of atmospheric pressure, so that a working cycle is formed. The invention adopts the hydraulic control and vacuum type design and has the characteristics of simple structure, strong inhalability and high reliability.

Description

Vacuum type hydraulically controlled felling machine lubricating oil injection device

Technical Field

The invention relates to a spraying device, in particular to a lubricating oil spraying device of a vacuum type hydraulic control felling machine.

Background

At present, a power device of a felling machine master machine is generally adopted for hydraulic oil injection lubrication, so that the hydraulic oil in a hydraulic oil tank of the master machine is reduced, the master machine is possibly damaged due to oil shortage if the hydraulic oil is not added in time, and the special lubricating oil can only be adopted instead of the hydraulic oil, so that the lubrication effect is not ideal; in addition, a single plunger pump is adopted, and one check valve is respectively arranged at the oil outlet end and the oil suction end to control the flow direction of the lubricating oil.

Disclosure of Invention

The invention aims to provide a vacuum type hydraulically controlled felling machine injection device which adopts a hydraulically controlled and pump body internal vacuum type suction design and has the characteristics of simple structure, strong lubricating oil suction and high reliability.

The invention achieves the aim through the following technical scheme: the utility model provides a vacuum type hydraulically controlled felling machine lubricating oil injection apparatus, includes elasticity clamp, retaining ring, spring, check valve body, one-way case, O shape sealing washer, spring holder, valve body, powerful reset spring, piston, throttle joint, fan-shaped orifice, and specific structure and relation of connection are:

the elastic clamp is clamped in an inner hole groove above the check valve body, the check ring is fixed on the check valve body, the upper side of the spring is tightly attached to the check ring, the lower side of the spring is connected with the check valve core, the conical surface of the check valve core is provided with an O-shaped sealing ring, the conical surface of the check valve core is tightly attached to the check valve body, the spring seat is fixed above the valve body, one end of the powerful return spring is fixed on the spring seat, the other end of the powerful return spring is tightly pressed against the inner hole wall of the piston, the piston is arranged between the powerful return spring and the throttle joint, the piston can realize up-and-down reciprocating motion in the valve body, the throttle joint is arranged below the valve body, and the upper end of the throttle joint limits the piston.

The throttle joint is provided with a fan-shaped throttle hole.

The injection device P mouth is connected with the control oil port, the T mouth is connected with the lubricating oil tank, the T mouth is a lubricating oil feeding port, the K mouth is a lubricating oil output port, and the K mouth is connected with the lubricating oil injection nozzle through a hydraulic hose.

The invention has the outstanding advantages that:

1. due to the adoption of the vacuum type design, vacuum is generated in the airtight cavity between the piston and the spring seat in the descending process of the piston, and when the piston moves down to the inner cavity of the valve body to be communicated with the lubricating oil inlet, powerful suction of lubricating oil can be realized, and the external power device is not required to feed the lubricating oil.

2. The throttle joint is provided with a fan-shaped throttle hole, so that the piston can stably run.

3. Only one check valve is arranged, so that the failure rate of the injection device is greatly reduced, the conical surface O-shaped ring is designed, and the sealing performance is better.

Drawings

Fig. 1 is a schematic structural diagram of a lubricating oil injection device of a vacuum type hydraulic controlled felling machine.

Fig. 2 is an enlarged view of a check valve structure of the lubricating oil injection device of the vacuum type hydraulic controlled felling machine.

Fig. 3 is a cross-sectional view A-A of fig. 2.

Marked in the figure as: the device comprises an elastic clamp 1, a retainer ring 2, a spring 3, a one-way valve body 4, a one-way valve core 5, an O-shaped sealing ring 6, a spring seat 7, a valve body 8, a powerful return spring 9, a piston 10, a throttle joint 11 and a fan-shaped throttle hole 12.

Detailed Description

The technical scheme of the invention is further described below through the attached drawings and the embodiments.

As shown in fig. 1 to 3, the lubricating oil injection device of a vacuum type hydraulic controlled feller comprises an elastic clamp 1, a retainer ring 2, a spring 3, a one-way valve body 4, a one-way valve core 5, an O-shaped sealing ring 6, a spring seat 7, a valve body 8, a powerful return spring 9, a piston 10 and a throttle joint 11, wherein the specific structure and the connection relation are as follows:

the elastic clamp 1 is clamped in an inner hole groove above the one-way valve body 4, and the check ring 2 is fixed on the one-way valve body 4; the upper part of the spring 3 is tightly attached to the retainer ring 2, and the lower part is connected with the one-way valve core 5; the conical surface of the unidirectional valve core 5 is provided with an O-shaped sealing ring 6, the conical surface of the unidirectional valve core 5 is tightly attached to the unidirectional valve body 4, a spring seat 7 is fixed above a valve body 8, one end of a powerful return spring 9 is fixed on the spring seat 7, and the other end of the powerful return spring is tightly pressed against the inner hole wall of the piston; the piston 10 is arranged between the powerful return spring 9 and the throttle joint 11, and the piston 10 can reciprocate up and down in the valve body 8; the throttle joint 11 is installed in the control oil port P department of the below of valve body 8, and throttle joint 11 upper end is to piston 10 precompaction and spacing.

The throttle nipple 11 is provided with a fan-shaped throttle orifice 12.

The one-way valve is composed of an elastic clamp 1, a retainer ring 2, a spring 3, a one-way valve body 4, a one-way valve core 5 and an O-shaped sealing ring 6, and is arranged at a lubricating oil output port K at the top end of the injection device and above a spring seat 7.

Working principle and process:

the control oil enters the throttling joint 11 from the port P, then reaches the bottom of the piston 10 through a sector orifice 12 of the throttling joint 11, the piston 10 moves upwards at a constant speed against the pressure of the strong return spring 9 under the action of oil pressure, and at the moment, the lubricating oil between the piston 10 and the spring seat 7 is extruded to flow towards the port K; the unidirectional valve core 5 moves upwards against the pressure of the spring 3 under the action of lubricating oil pressure, so that a gap is formed between the valve core 5 and the unidirectional valve body 4, and at the moment, the lubricating oil flows upwards from the unidirectional valve body 4 to the K port to finish the spraying operation. Then, the P port is used for controlling oil pressure release, controlling oil to flow out of the P port through a fan-shaped orifice of the throttling joint 11, and the piston 10 moves downwards under the action of the powerful return spring 9; meanwhile, the unidirectional valve core 5 moves downwards to reset and close the K oil outlet under the action of the spring 3, so that a closed cavity is formed between the piston 10 and the spring seat 7, the piston 10 continues to move downwards, vacuum is generated in the closed cavity between the piston 10 and the spring seat 7, when the upper port of the piston 10 moves downwards to the position of the T port, the inner cavity of the valve body 8 is communicated with the T port, and lubricating oil enters the vacuum cavity inside the valve body 8 from the T port under the action of atmospheric pressure, so that a complete working cycle is formed.

Claims

1. The utility model provides a vacuum type hydraulically controlled felling machine lubricating oil injection apparatus, includes elasticity clamp, retaining ring, spring, check valve body, check valve core, O shape sealing washer, spring holder, valve body, powerful reset spring, piston and throttle joint, its characterized in that, concrete structure and relation of connection are:

the elastic clamp is clamped in an inner hole groove above the check valve body, the retainer ring is fixed on the check valve body, the upper side of the spring is tightly attached to the retainer ring, the lower side of the spring is connected with the check valve core, the conical surface of the check valve core is provided with an O-shaped sealing ring, the conical surface of the check valve core is tightly attached to the check valve body, the elastic clamp, the retainer ring, the spring, the check valve body, the check valve core and the O-shaped sealing ring form a check valve, the check valve is arranged at a lubricating oil outlet K at the top end of the injection device and above the spring seat, the spring seat is fixed above the valve body, one end of the powerful return spring is fixed on the spring seat, the other end of the powerful return spring is tightly pressed against a bottom hole of the piston, the piston is arranged between the powerful return spring and the throttle connector, the piston can realize up and down reciprocating motion in the valve body, the piston moves downwards under the action of the powerful return spring, a closed cavity between the piston and the spring seat can automatically suck lubricating oil when the piston moves downwards, the upper end of the throttle connector faces the piston to limit, the control oil enters the throttle connector, the piston overcomes the pressure of the powerful return spring under the effect, the action of the control oil pressure of the powerful return spring moves upwards at a uniform speed, the lubricating oil pressure between the piston and the valve core is pressed by the output K under the action of the control oil pressure, and the force of the control oil reaches the check valve body, and the one-way valve core is overcome, and the upward, and the operation is accomplished by the upward by the action of the force of the thrust of the valve, and the valve.

2. The vacuum controlled felling machine lubricating oil spraying device as claimed in claim 1, wherein the throttle joint is provided with a fan-shaped throttle hole.