阅读说明：本技术 液压式履带张紧装置的张力补偿装置 (Tension compensation device of hydraulic track tensioning device ) 是由 倪安芝 于 2020-05-22 设计创作，主要内容包括：本发明公开了一种液压式履带张紧装置的张力补偿装置,涉及履带张紧装置技术领域,包括蓄能油缸,所述蓄能油缸与张紧装置的调节油缸连通,所述蓄能油缸内注有液压油,所述蓄能油缸内的液压油可选择地向调节油缸内单向流动,实现对调节油缸内液压油的补充和保压。本发明的张力补偿装置,可保持调节油缸的油量和油压,避免因补油不及时、漏补、补油不充分等原因造成的调节油缸缺油或意外导致突然缺油情况的发生,调节油缸油量充足的情况下,即可保证张紧装置对履带的张紧作用,从而使机器或设备恢复正常功能。(The invention discloses a tension compensation device of a hydraulic type track tensioning device, which relates to the technical field of track tensioning devices and comprises an energy storage oil cylinder, wherein the energy storage oil cylinder is communicated with an adjusting oil cylinder of the tensioning device, hydraulic oil is injected into the energy storage oil cylinder, and the hydraulic oil in the energy storage oil cylinder can selectively flow in a single direction into the adjusting oil cylinder, so that the supplement and pressure maintaining of the hydraulic oil in the adjusting oil cylinder are realized. The tension compensation device can keep the oil quantity and the oil pressure of the adjusting oil cylinder, avoid the occurrence of sudden oil shortage caused by oil shortage or accidents of the adjusting oil cylinder due to reasons of untimely oil supplement, missed oil supplement, insufficient oil supplement and the like, and can ensure the tensioning effect of the tensioning device on the track under the condition of sufficient oil quantity of the adjusting oil cylinder, thereby enabling the machine or equipment to recover the normal function.)

1. The utility model provides a tension compensation device of hydraulic pressure formula track overspeed device tensioner, its characterized in that, tension compensation device includes the energy storage hydro-cylinder, energy storage hydro-cylinder and overspeed device tensioner's regulation hydro-cylinder intercommunication, hydraulic oil has been annotated in the energy storage hydro-cylinder, hydraulic oil in the energy storage hydro-cylinder can be automatically to the unidirectional flow in the regulation hydro-cylinder, realizes the replenishment and the pressurize to hydraulic oil in the regulation hydro-cylinder.

2. The tension compensating apparatus of a hydraulic track tensioner as claimed in claim 1, wherein the accumulator cylinder is in communication with the adjustment cylinder through a check valve, the check valve having a function of allowing hydraulic oil of the accumulator cylinder to flow to the adjustment cylinder.

3. The tension compensating device of a hydraulic track tensioner as claimed in claim 2, wherein the energy storage cylinder comprises a cylinder body, a piston, a spring and an end cap, the cylinder body is a cylinder with an opening at one end, a piston cavity is arranged in the cylinder body, the piston and the piston cavity are slidably arranged and are in sealing fit, hydraulic oil exists in a closed space formed by the piston cavity and the piston, the end cap is fixed at the opening end of the cylinder body, and the spring is compressed and fixed between the piston and the end cap, so that the hydraulic oil in the closed space has a certain hydraulic pressure.

4. A tension compensating apparatus for a hydraulic track tensioner as claimed in claim 3, wherein a one-way oil fill port is provided in the cylinder block in communication with the enclosed space.

5. A tension compensating device for a hydraulic track tensioner as claimed in claim 3, wherein the end cap is threadedly connected to the cylinder.

6. A tension compensating device for a hydraulic track tensioner as claimed in claim 3, wherein the spring has a minimum preload between the piston and the end cap when there is no hydraulic oil in the enclosed space.

7. The tension compensating device of a hydraulic track tensioner as claimed in claim 3, wherein the energy-accumulating cylinder further comprises a piston rod, the end cap is provided with a through hole for passing through the piston rod, one end of the piston rod is fixed to the piston, and the other end of the piston rod passes through the through hole and is located outside the cylinder body.

8. A tension compensating device for a hydraulic track tensioner according to any of claims 1 to 7, in which the accumulator cylinder is fixed to the adjustment cylinder.

Technical Field

The invention relates to the technical field of crawler tensioning devices, in particular to a tension compensation device of a hydraulic crawler tensioning device.

Background

In order to overcome the severe outdoor working environment and the variable road conditions, especially the uneven road and the action site of the gravel ground, etc., the engineering machinery usually adopts a crawler type traveling mechanism, such as a crawler crane, a crawler type excavator, a crawler type bulldozer, etc. The track tensioning device is an indispensable part of a track walking mechanism, and the function of the track tensioning device is very important. Firstly, the track tensioning mechanism can enable the track to be tensioned all the time and be in a good working state, and secondly, the track tensioning mechanism can ensure that the track cannot be broken or derailed due to impact in the running process of the vehicle.

The tensioning devices are various, and a lead screw track tensioning device and a hydraulic track tensioning device are more commonly used. In the screw crawler tensioning device, after the crawler is tensioned at a certain position, the screw is locked by the nut. Hydraulic track tensioning devices often use hydraulic oil injected into a control cylinder to tension the track.

When the crawler belt runs under large resistance or wears after running for a period of time, the crawler belt is lengthened, if the length and the tension of the tensioning device cannot be found and adjusted in time, the tensioning device loses the action, so that the equipment jumps, the gear shakes, the wear is accelerated, the performance is deteriorated, parts are seriously damaged, and even accidents occur. The length and tension of the tensioner must therefore be checked and adjusted frequently. The relative position of the adjusting nut and the screw rod is the relative position of the screw rod and the track tensioning device, and the hydraulic track tensioning device is used for filling hydraulic oil into the adjusting oil cylinder. Accidents and early failure of the machinery due to failure of the tensioner to adjust in time occur due to unforeseen conditions and human negligence. The prior hydraulic track tensioning device generally needs to manually inject oil into an adjusting oil cylinder periodically or irregularly to maintain the normal use of the machine. The failure of the existing extensive equipment is related to the failure of timely finding and adjusting the tension device.

Disclosure of Invention

Therefore, the invention provides a tension compensation device of a hydraulic track tensioning device, which aims to solve the problem that the tensioning device loses function due to the fact that oil cannot be supplemented timely in the prior art.

In order to achieve the above object, the embodiments of the present invention provide the following technical solutions:

according to the first aspect of the invention, the tension compensation device of the hydraulic track tensioning device comprises an energy storage oil cylinder, wherein the energy storage oil cylinder is communicated with a regulating oil cylinder of the tensioning device, hydraulic oil is injected into the energy storage oil cylinder, and the hydraulic oil in the energy storage oil cylinder can automatically flow into the regulating oil cylinder in a one-way mode, so that the supplement and pressure maintaining of the hydraulic oil in the regulating oil cylinder are realized.

Furthermore, the energy storage oil cylinder is communicated with the adjusting oil cylinder through a one-way valve, and the one-way valve has the function of allowing hydraulic oil of the energy storage oil cylinder to flow to the adjusting oil cylinder.

Further, the energy storage oil cylinder comprises a cylinder body, a piston, a spring and an end cover, wherein the cylinder body is a cylinder body with an opening at one end, a piston cavity is formed in the cylinder body, the piston and the piston cavity can be slidably arranged and are in sealing fit, hydraulic oil exists in a closed space formed by the piston cavity and the piston, the end cover is fixed at the opening end of the cylinder body, and the spring is compressed and fixed between the piston and the end cover so that the hydraulic oil in the closed space has certain hydraulic pressure.

Furthermore, a one-way oil filling port communicated with the closed space is arranged on the cylinder body.

Further, the end cover is in threaded connection with the cylinder body.

Further, when there is no hydraulic oil in the enclosed space, the spring still has a minimum preload between the piston and the end cap.

Further, the energy storage oil cylinder further comprises a piston rod, the end cover is provided with a through hole used for penetrating through the piston rod, one end of the piston rod is fixed with the piston, and the other end of the piston rod penetrates through the through hole and is located outside the cylinder body.

Further, the energy storage oil cylinder is fixed to the adjusting oil cylinder.

The invention has the following advantages:

according to the tension compensation device of the hydraulic track tensioning device, hydraulic oil with certain pressure intensity is injected into the energy storage oil cylinder, and the energy storage oil cylinder is communicated with the adjusting oil cylinder, so that the hydraulic oil in the energy storage oil cylinder can selectively and unidirectionally flow into the adjusting oil cylinder, the oil quantity and the oil pressure of the adjusting oil cylinder are kept, the length of the tensioning device is adjusted, the track loosening condition caused by reasons of untimely oil supplement, missed oil supplement, insufficient oil supplement and the like when a machine track is elongated is avoided, and the tensioning effect of the tensioning device on the track can be guaranteed under the condition that the oil quantity of the adjusting oil cylinder is automatically supplemented, so that the machine or equipment can keep normal functions.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.

The structures, ratios, sizes, and the like shown in the present specification are only used for matching with the contents disclosed in the specification, so that those skilled in the art can understand and read the present invention, and do not limit the conditions for implementing the present invention, so that the present invention has no technical significance, and any structural modifications, changes in the ratio relationship, or adjustments of the sizes, without affecting the functions and purposes of the present invention, should still fall within the scope covered by the contents disclosed in the present invention.

Fig. 1 is a schematic structural diagram of a tension compensation device of a hydraulic track tensioning device according to embodiment 1 of the present invention.

In the figure: 1-energy storage oil cylinder, 2-adjusting oil cylinder, 3-oil supply nozzle, 4-one-way valve, 5-cylinder body, 6-piston, 7-spring, 8-end cover, 9-one-way oil injection port and 10-piston rod.

Detailed Description

The present invention is described in terms of particular embodiments, other advantages and features of the invention will become apparent to those skilled in the art from the following disclosure, and it is to be understood that the described embodiments are merely exemplary of the invention and that it is not intended to limit the invention to the particular embodiments disclosed. 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.

In the present specification, the terms "upper", "lower", "left", "right", "middle", and the like are used for clarity of description, and are not intended to limit the scope of the present invention, and changes or modifications in the relative relationship may be made without substantial changes in the technical content.