CN218325190U

CN218325190U - Oil pump assembly, oil supply mechanism and electric forklift

Info

Publication number: CN218325190U
Application number: CN202222640294.7U
Authority: CN
Inventors: 李青云; 武长青; 刘振生
Original assignee: Aiqu Electric Technology Wuxi Co ltd
Current assignee: Aiqu Electric Technology Wuxi Co ltd
Priority date: 2022-10-09
Filing date: 2022-10-09
Publication date: 2023-01-17
Anticipated expiration: 2032-10-09

Abstract

The utility model discloses an oil pump assembly, include: the mounting seat is internally provided with a first mounting groove, a second mounting groove and a communicating hole; the oil pump is arranged on one side of the mounting seat; the oil tank is arranged on one side of the mounting seat and covers the oil pump so as to form an oil storage space between the oil tank and the mounting seat, an oil inlet of the oil pump is communicated with the oil storage space, and the second mounting groove is communicated with the oil storage space through an opening; one end of the check valve pipe joint is arranged in the first mounting groove and is connected with an oil outlet of the oil pump, and a through hole is radially formed in one end of the check valve pipe joint arranged in the first mounting groove; and one end of the electromagnetic valve is arranged in the second mounting groove and communicated with the communication hole. The utility model discloses a pipeline coupling assembling can realize oil pump assembly's oil supply and oil return to oil pump assembly's oil supply line can be simplified.

Description

Oil pump assembly, oil supply mechanism and electric forklift

Technical Field

The utility model relates to an electric fork-lift truck technical field especially relates to an oil pump assembly, fuel feeding mechanism and electric fork-lift truck.

Background

At present, the lifting of a gantry and a pallet fork arranged on the gantry is realized by the stretching of a piston rod of an oil cylinder of an electric forklift, and the stretching movement of the piston rod of the oil cylinder is realized by the oil supply of an oil pump assembly. The oil pump assembly in the prior art generally needs two pipelines of an oil conveying pipe and an oil return pipe to be connected with an oil cylinder to realize oil supply and oil return of the oil pump assembly, so that an oil supply pipeline of the oil pump assembly is complex.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an oil pump assembly, fuel feeding mechanism and electric fork-lift to solve the comparatively complicated problem of oil pump assembly's among the prior art oil supply pipe way.

Therefore, the utility model discloses a technical scheme provide an oil pump assembly, include:

the mounting seat is internally provided with a first mounting groove, a second mounting groove and a communicating hole, one end of the communicating hole is communicated with the first mounting groove, and the other end of the communicating hole is communicated with the second mounting groove;

the oil pump is arranged on one side of the mounting seat;

the oil tank is arranged on one side of the mounting seat and covers the oil pump so as to form an oil storage space between the oil tank and the mounting seat, an oil inlet of the oil pump is communicated with the oil storage space, and the second mounting groove is communicated with the oil storage space through an opening;

one end of the check valve pipe joint is arranged in the first mounting groove and is connected with an oil outlet of the oil pump, a through hole is radially arranged at one end of the check valve pipe joint arranged in the first mounting groove, one end of the through hole is communicated with an inner hole of the check valve pipe joint, and the other end of the through hole is communicated with the communicating hole;

and one end of the electromagnetic valve is arranged in the second mounting groove and communicated with the communication hole.

In an embodiment of the present invention, further comprising:

and the buffer valve is arranged in the second mounting groove and is positioned between the electromagnetic valve and the mounting seat.

In an embodiment of the present invention, the oil tank is provided with a vent valve.

The utility model discloses a another technical scheme provide an oil supply mechanism, including the oil pump assembly in above-mentioned arbitrary embodiment.

The utility model discloses a technical scheme still provide an electric fork-lift, including the fuel feeding mechanism in any embodiment of the aforesaid.

The utility model discloses an useful part lies in:

be different from prior art, use the technical scheme of the utility model, during the practical application, oil pump work is with oil from the oil storage space suction oil inlet, then supplies with the check valve coupling from the oil-out, carries to the cavity of hydro-cylinder through pipeline coupling assembling after that to the piston rod of drive cylinder stretches out. When the piston rod extends to a proper position, the oil pump stops working. When the piston rod of the oil cylinder needs to be driven to retract, the electromagnetic valve is opened, oil enters the communicating hole from the through hole of the one-way valve pipe joint, then enters the electromagnetic valve, flows into the second mounting groove from the joint of the electromagnetic valve, and finally flows back to the oil storage space through the opening hole. Therefore, oil supply and oil return of the oil pump assembly can be realized through one pipeline connecting assembly, and the oil supply pipeline of the oil pump assembly can be simplified.

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 embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following descriptions are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of an oil supply mechanism according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of an oil pump assembly of an oil supply mechanism according to an embodiment of the present invention;

fig. 3 is a second schematic structural view of an oil pump assembly of an oil supply mechanism according to an embodiment of the present invention;

FIG. 4 isbase:Sub>A schematic sectional view taken along line A-A of FIG. 3;

fig. 5 is a schematic sectional view taken along line B-B of fig. 3.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless explicitly defined otherwise.

In the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Referring to fig. 1 to 5, an oil supply mechanism according to an embodiment of the present invention includes an oil cylinder 10, an oil pump assembly 30, and a pipeline connection assembly 20 connected between the oil cylinder 10 and the oil pump assembly 30.

The oil pump assembly 30 includes a mount 31, an oil tank 32, an oil pump 34, a check valve pipe joint 35, and a solenoid valve 36. A first mounting groove, a second mounting groove and a communication hole 311 are arranged in the mounting seat 31, one end of the communication hole 311 is communicated with the first mounting groove, and the other end of the communication hole 311 is communicated with the second mounting groove. The oil pump 34 is disposed on one side of the mounting seat 31, and a rotating shaft of the oil pump 34 extends through the mounting seat 31 to the other side of the mounting seat 31. The oil tank 32 is arranged on one side of the mounting seat 31, and the cover is arranged outside the oil pump 34, so that an oil storage space is formed between the oil tank 32 and the mounting seat 31, an oil inlet of the oil pump 34 is communicated with the oil storage space, and the second mounting groove is communicated with the oil storage space through an opening hole. One end of the check valve pipe joint 35 is arranged in the first mounting groove and connected with an oil outlet of the oil pump 34, and the other end of the check valve pipe joint 35 extends out of the mounting seat 31 and can be connected with the oil cylinder 10 through the pipeline connecting assembly 20. One end of the check valve pipe joint 35 disposed in the first mounting groove is radially provided with a through hole 352, one end of the through hole 352 communicates with the inner hole 351 of the check valve pipe joint 35, and the other end of the through hole 352 communicates with the communication hole 311. One end of the solenoid valve 36 is disposed in the second mounting groove and communicates with the communication hole 311.

In practical application of the oil pump assembly 30, the oil pump 34 operates to suck oil from the oil storage space into the oil inlet, supply the oil from the oil outlet to the one-way valve pipe joint 35, and then convey the oil into the cavity of the oil cylinder 10 through the pipeline connecting assembly 20, so as to drive the piston rod of the oil cylinder 10 to extend out. When the piston rod is extended to the proper position, the oil pump 34 stops operating. When the piston rod of the driving oil cylinder 34 needs to be retracted, the electromagnetic valve 36 is opened, oil enters the communication hole 311 from the through hole 352 of the one-way valve pipe joint 35, then enters the electromagnetic valve 36, flows into the second mounting groove from the joint of the electromagnetic valve 36, and finally flows back to the oil storage space through the opening hole. In this way, oil supply and oil return of the oil pump assembly 30 can be achieved by one pipe connection assembly 20, so that the oil supply pipe of the oil pump assembly 30 can be simplified.

In the embodiment of the present invention, the oil pump assembly 30 further includes a buffer valve 37, the buffer valve 37 is disposed in the second mounting groove and is located between the electromagnetic valve 36 and the mounting seat 31. Thus, the oil returning from the joint of the solenoid valve 36 can be buffered by the buffer valve 37, avoiding hard impact and causing no damage to the oil pump assembly 30.

In the embodiment of the present invention, the oil tank 32 is provided with a vent valve 33.

The utility model discloses another embodiment provides an electric fork-lift truck, including the fuel feeding mechanism in above-mentioned arbitrary embodiment.

All possible combinations of the technical features of the above embodiments may not be described for the sake of brevity, but should be considered as within the scope of the present disclosure as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent several embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. An oil pump assembly, comprising:

the oil pump is arranged on one side of the mounting seat;

one end of the check valve pipe joint is arranged in the first mounting groove and is connected with an oil outlet of the oil pump, one end of the check valve pipe joint arranged in the first mounting groove is radially provided with a through hole, one end of the through hole is communicated with an inner hole of the check valve pipe joint, and the other end of the through hole is communicated with the communicating hole;

2. The oil pump assembly of claim 1, further comprising:

3. The oil pump assembly of claim 2 wherein a vent valve is provided on the oil tank.

4. An oil supply mechanism characterized by comprising the oil pump assembly according to any one of claims 1 to 3.

5. An electric forklift comprising the oil supply mechanism according to claim 4.