CN219571578U

CN219571578U - Centralized lubrication system

Info

Publication number: CN219571578U
Application number: CN202320122363.7U
Authority: CN
Inventors: 赵大平; 刘新功; 张超; 张同军
Original assignee: ZHENGZHOU AUTOL TECHNOLOGY CO LTD
Current assignee: ZHENGZHOU AUTOL TECHNOLOGY CO LTD
Priority date: 2023-02-06
Filing date: 2023-02-06
Publication date: 2023-08-22
Anticipated expiration: 2033-02-06

Abstract

The utility model relates to a centralized lubrication system which comprises a grease pump, two main oil ways, an overflow valve, an oil pressure detection module and an oil return pipe. One of the two main oil ways is provided with a bucket rod progressive distributor for supplying oil to the bucket rod area, the other one is provided with a movable arm progressive distributor for supplying oil to the movable arm area, the outlet of the maximum displacement piece of the movable arm progressive distributor is connected with a connecting rod progressive distributor for supplying oil to the connecting rod area, one end of an oil return pipe is communicated with an oil tank, and the other end of the oil return pipe can be connected with the outlet of the maximum displacement piece of the movable arm progressive distributor when the connecting rod progressive distributor and an accessory oil pipe thereof fail so that lubricating grease of the oil way flows back to the oil tank. The system has the advantages of simple structure and lower cost, and can still ensure the normal operation of the other system components when the distributor or the oil pipe at the bucket part fails.

Description

Centralized lubrication system

Technical Field

The utility model relates to a centralized lubrication system.

Background

The engineering machinery is an important component of equipment industry and is mainly used in the fields of national defense construction engineering, traffic and transportation construction, energy industry construction and production, raw material industry construction and production such as mines, agriculture, forestry, water conservancy construction, industrial and civil buildings, city construction, environmental protection and the like. The working condition is complex, the working object is changeable, the working is usually carried out under the condition of changing load, and the requirements on the reliability and the adaptability of the machine are high. In order to ensure that the friction pair positions of the bearing, the hinge shaft and the like can well run under the condition of high-strength construction operation for a long time, the shaft pin and the shaft sleeve are required to be effectively lubricated. In use, some parts of the engineering machinery need to frequently act, bear larger load and are easy to collide, the parts need larger oil and are easy to collide and damage when in lubrication, such as a bucket part of an excavator, when the traditional centralized lubrication system is used, the whole system cannot work continuously because the bucket part is easy to collide and damage to a pipeline and a distributor of the centralized lubrication system, so that the distributor, the pipeline and the like are not arranged at the bucket part generally, the lubrication points of the bucket part are not lubricated manually, the multi-line system is adopted in the prior art, the lubrication pump structure is complex, the cost is high, namely, the multi-line system adopted in the prior art is high in cost and is easy to stop due to the fault of the distributor or the oil pipe of the bucket part, a user often spends much money but cannot use the centralized lubrication system for a long time, and therefore, a plurality of clients cannot use the centralized lubrication system any more.

Disclosure of Invention

The utility model aims to provide a centralized lubrication system which has a simple structure and low cost and can still ensure the normal operation of the rest system components when a distributor or an oil pipe at a bucket part fails.

The technical scheme of the utility model is as follows: a centralized lubrication system comprising:

the grease pump is used for sucking grease from a grease storage tank and comprises two plunger sub-assemblies, wherein each plunger sub-assembly is provided with an oil inlet communicated with the oil tank and an oil outlet communicated with an external oil pipe;

the two main oil ways are respectively communicated with the two oil outlets;

at least one overflow valve, the inlet of which is communicated with the main oil way, and the outlet of which is communicated with the oil tank;

the oil pressure detection module is at least one and is arranged on the main oil path and used for monitoring the oil pressure of the main oil path and alarming when the oil pressure is set;

the set oil pressure of the oil pressure detection module is lower than the opening oil pressure of the relief valve;

one of the two main oil ways is provided with a bucket rod progressive distributor for supplying oil to a bucket rod area, the other one is provided with a movable arm progressive distributor for supplying oil to a movable arm area, and a connecting rod progressive distributor for supplying oil to a connecting rod area is connected to an outlet of a piece with the maximum displacement of the movable arm progressive distributor;

and one end of the oil return pipe is communicated with the oil tank, and the other end of the oil return pipe can be connected with the outlet of the maximum displacement assembly piece of the movable arm progressive distributor when the connecting rod progressive distributor and the auxiliary oil pipe thereof fail so as to enable lubricating grease of the oil path to flow back to the oil tank.

Further, the oil pressure detection module is an oil pressure switch.

Further, oil pressure switches are arranged on the two main oil paths.

Further, the oil pipe ends of the oil return pipe and the connecting rod progressive distributor are respectively in butt joint with the outlet of the maximum displacement sheet of the movable arm progressive distributor through an oil pipe quick connector.

Further, the grease pump drives the sliding block to slide back and forth through the motor, and further drives the plunger auxiliary assembly to suck lubricating grease.

Further, the capacity of the oil tank is 20-60L. The lubricating pump oil tank is small in size and needs frequent grease supplementing, the existing standard lubricating grease barrel is not completely placed after grease supplementing each time, impurities are easy to enter and pollute, the capacity of the oil tank is increased, the quantity of at least one standard lubricating grease barrel can be supplemented at a time, and the lubricating grease is convenient and is not easy to pollute.

Further, the overflow valve is provided with one, an inlet of the overflow valve is respectively communicated with two main oil ways through two connecting pipes, and one-way valves which are communicated with the overflow valve from the main oil ways in a one-way are arranged on the two connecting pipes. The structure enables two main oil ways to share one overflow valve, overflow can be carried out through the overflow valve when any main oil way is overpressured, the system structure is further simplified, the occupied volume is reduced, and the cost is further reduced.

The utility model has the beneficial effects that: when the lubricating grease centralized lubrication system is used, if the connecting rod progressive distributor on the bucket fails or the auxiliary oil pipe fails to work continuously, the oil pipe driven arm of the branch cannot be detached from the outlet of the maximum displacement piece of the progressive distributor, one end of the spare oil return pipe which is arranged on the equipment in advance is connected with the outlet of the maximum displacement piece obtained by the movable arm progressive distributor, so that lubricating grease coming out of the outlet is led back to the oil tank, the normal work of other progressive distributors of the system is not influenced, the lubrication point on the bucket is temporarily lubricated manually, and the lubricating system can be continuously used for lubrication after maintenance is completed. Meanwhile, the system can realize the function of lubrication at all positions through the double-plunger lubrication pump and the two main oil ways, and is simpler and lower in cost. The setting of overflow valve and oil pressure detection module is because the setting oil pressure of oil pressure detection module is less than the opening oil pressure of overflow valve for the overflow valve is as the last guarantee of protection system avoiding superpressure blasting tube, but oil pressure detection module then can real-time supervision system pressure, and control system shut down and fault alarm as far as possible before overflow valve overflows, in order to in time maintain.

Drawings

FIG. 1 is a schematic diagram of an embodiment of a centralized lubrication system according to the present utility model;

in the figure: the hydraulic system comprises a 1-monitor, a 2-motor, a 3-plunger pair, a 4-oil tank, a 5-one-way valve, a 6-overflow valve, a 7-oil pressure switch, an 8-bucket rod progressive distributor, a 9-movable arm progressive distributor, a 91-maximum displacement group piece, a 10-connecting rod progressive distributor, a main oil way A, B, a 12-branch oil way, a 13-oil return pipe, a 14-oil pipe quick connector, a 15-electric wire and a 16-oil way.

Detailed Description

The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the particular embodiments described herein are illustrative only and are not intended to limit the utility model, i.e., the embodiments described are merely some, but not all, of the embodiments of the utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by a person skilled in the art without making any inventive effort, are intended to be within the scope of the present utility model.

It is noted that relational terms such as "first" and "second", and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

The features and capabilities of the present utility model are described in further detail below in connection with the examples.

Specific embodiments of a centralized lubrication system of the present utility model: as shown in fig. 1, the system includes a grease pump, two main oil passages, a relief valve 6, a hydraulic pressure detection module, a boom progressive distributor 8, a boom progressive distributor 9, a link progressive distributor 10, an oil return pipe 13, an oil tank 4, a motor 2, and the like.

The grease pump is used for sucking grease from the oil tank 4 for storing the grease and comprises two plunger pair 3 assemblies, the plunger pair 3 assemblies are provided with an oil inlet communicated with the oil tank 4 and an oil outlet communicated with an external oil pipe, plungers of the plunger pair 3 assemblies are connected with two ends of the same sliding block, an output shaft of the motor 2 drives the sliding block to linearly reciprocate in the sliding groove in a mode of eccentric wheels, eccentric shafts, cams and the like, and further drives the plungers of the two plunger pairs 3 to sequentially circularly reciprocate, so that the grease in the oil tank 4 is sucked and pumped out.

The two main oil ways are respectively communicated with oil outlets of the two plunger pair 3 assemblies.

At least one overflow valve 6 is arranged, in this embodiment, an inlet of the overflow valve 6 is respectively communicated with two main oil ways, an outlet of the overflow valve 6 is communicated with the oil tank 4, and a one-way valve 5 is arranged on a passage where the inlet of the overflow valve 6 is connected with the two main oil ways, and the one-way valve 5 enables grease to be conducted unidirectionally from the main oil ways to the overflow valve 6.

At least one oil pressure detection module is arranged, and the two oil pressure detection modules are provided with oil pressure switches 7 which are respectively arranged on the two main oil paths and are used for monitoring the oil pressure of the main oil paths and giving an alarm when the oil pressure is set, wherein the set oil pressure of the oil pressure detection module is lower than the opening oil pressure of the relief valve 6; for example, the opening pressure of the oil pressure switch 7 may be set to 30MPa, and the opening pressure of the relief valve 6 may be set to 35MPa.

One of the two main oil passages is provided with an arm progressive distributor 8 for supplying oil to the arm region, the other is provided with a movable arm progressive distributor 9 for supplying oil to the movable arm region, the outlet of a set piece 91 with the maximum displacement of the movable arm progressive distributor 9 is connected with a connecting rod progressive distributor 10 for supplying oil to the connecting rod region, and the outlet of each progressive distributor is respectively connected to a lubrication point of each lubrication region through a lubrication oil pipe to lubricate friction pairs of the regions.

One end of the oil return pipe 13 is communicated with the oil tank 4, and the other end of the oil return pipe can be connected to the outlet of the maximum displacement assembly piece 91 of the movable arm progressive distributor 9 when the connecting rod progressive distributor 10 and the accessory oil pipe thereof fail so as to enable lubricating grease of the oil path to flow back to the oil tank 4, and the switching mode is generally manual, for example, the oil pipe quick connector 14 can be adopted for butt joint, and the oil path can be conveniently disassembled, assembled and replaced. Namely, the oil return pipe 13 and the oil pipe end of the connecting rod progressive distributor 10 are respectively in butt joint with the outlet of the maximum displacement group piece 91 of the movable arm progressive distributor 9 through the oil pipe quick connector 14.

The capacity of the oil tank 4 is 20-60L. Aiming at the problems that the oil tank 4 of the lubricating pump on the market is smaller and needs frequent grease supplementing and the existing standard lubricating grease barrel is polluted by impurities which are easy to enter after being placed after being used for supplementing grease each time, the capacity of the oil tank 4 is increased, so that the capacity of at least one standard lubricating grease barrel can be supplemented once, and the lubricating grease is convenient and difficult to pollute.

The overflow valve 6 is provided with one, the inlet of the overflow valve 6 is respectively communicated with two main oil ways through two connecting pipes, and the two connecting pipes are respectively provided with a one-way valve 5 which is communicated with the overflow valve 6 from an independent oil way in a one-way. The structure enables two main oil ways to share one overflow valve 6, and overflow can be carried out through the overflow valve 6 when any main oil way is overpressurized, so that the system structure is further simplified, the occupied volume is reduced, and the cost is further reduced.

When the lubricating grease centralized lubrication system is used, if the connecting rod progressive distributor 10 on the bucket fails or the auxiliary oil pipe fails to work continuously, the oil pipe driven arm of the branch cannot be detached from the outlet of the maximum displacement piece 91 of the progressive distributor 9, one end of the spare oil return pipe 13 which is arranged on the equipment in advance is connected with the outlet of the maximum displacement piece 91 of the movable arm progressive distributor 9, so that lubricating grease discharged from the outlet is led back to the oil tank 4, the normal work of other progressive distributors of the system is not influenced, the lubrication point on the bucket is temporarily lubricated manually, and the lubricating system can be continuously used for lubrication after maintenance is completed. Meanwhile, the system can realize the function of lubrication at all positions through the double-plunger lubrication pump and the two main oil ways, and is simpler and lower in cost. The setting of the overflow valve 6 and the oil pressure detection module, because the set oil pressure of the oil pressure detection module is lower than the opening oil pressure of the overflow valve 6, the overflow valve 6 is used as a protection system to avoid the final guarantee of overpressure pipe explosion, the oil pressure detection module can monitor the system pressure in real time, and the system is controlled to stop and alarm as much as possible before the overflow valve 6 overflows, so that the system can be maintained in time.

The above description is only a preferred embodiment of the present utility model, and the patent protection scope of the present utility model is defined by the claims, and all equivalent structural changes made by the specification and the drawings of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A centralized lubrication system, comprising:

characterized by further comprising:

the two main oil ways are respectively communicated with the two oil outlets;

2. The centralized lubrication system of claim 1, wherein the oil pressure detection module is an oil pressure switch.

3. A centralized lubrication system as claimed in claim 2, wherein oil pressure switches are provided on both main oil circuits.

4. A centralised lubrication system according to any of claims 1-3, wherein the oil return pipe and the oil pipe end of the link progressive distributor are each in butt joint with the outlet of the maximum displacement segment of the boom progressive distributor via an oil pipe quick connector.

5. A centralised lubrication system according to any of claims 1-3, wherein the grease pump is arranged to drive the slider to slide reciprocally by the motor, thereby driving the plunger sub-assembly to suck grease.

6. A centralised lubrication system according to any of claims 1-3, wherein the tank has a capacity of 20-60L.

7. A centralized lubrication system as claimed in any one of claims 1 to 3, wherein the overflow valve has one inlet, and the inlet of the overflow valve is respectively connected to the two main oil paths through two connecting pipes, and the two connecting pipes are provided with one-way valves for unidirectional conduction from the main oil path to the overflow valve.