CN214396939U

CN214396939U - Heat dissipation device of hydraulic system of mining dump truck and hydraulic system of mining dump truck

Info

Publication number: CN214396939U
Application number: CN202022558026.1U
Authority: CN
Inventors: 张梓农; 连冬; 熊炳榕
Original assignee: Zoomlion Heavy Industry Science and Technology Co Ltd
Current assignee: Zoomlion Heavy Industry Science and Technology Co Ltd
Priority date: 2020-11-06
Filing date: 2020-11-06
Publication date: 2021-10-15
Anticipated expiration: 2030-11-06

Abstract

The utility model provides a mining dump truck hydraulic system's heat abstractor and mining dump truck hydraulic system, this heat abstractor set up and keep away from one side of engine water tank at the water tank fan and fix to the frame on, heat abstractor includes: the protection plate is bent to form a vertical plate and a horizontal plate, the bent radiating pipe is located in the containing space formed by the vertical plate and the horizontal plate in a surrounding mode, the bent radiating pipe comprises a plurality of bending portions, and the radiating fins are spirally wound on the outer surface of the bent radiating pipe. The utility model discloses a fix heat abstractor in one side that engine water tank was kept away from to the water tank fan and fix to the frame to make heat abstractor's the shape cooling tube that returns include a plurality of kink, not only can adjust heat abstractor's shape and size in a flexible way, more be fit for narrow and small or special-shaped installation space, can also utilize current water tank fan, can not increase tipper hydraulic system's electric load.

Description

Heat dissipation device of hydraulic system of mining dump truck and hydraulic system of mining dump truck

Technical Field

The utility model relates to a mining dump truck hydraulic system puts, and especially relates to a mining dump truck hydraulic system's heat abstractor and mining dump truck hydraulic system.

Background

The mining dump truck is generally provided with a full hydraulic steering system and a lifting system, and hydraulic oil passes through various components and pipe fittings to generate pressure loss in the steering and lifting processes, so that a large amount of heat is generated, and the temperature of the hydraulic oil is increased. The oil temperature is increased, so that the viscosity of the oil is reduced, the leakage amount of the oil in elements and a system is increased, and the volumetric efficiency of the pump is reduced; when the oil temperature rises and the viscosity is reduced, a lubricating oil film between the surfaces of the parts which move relatively becomes thin, so that the mechanical abrasion is increased; the oil temperature is increased, so that the oxidation of the hydraulic oil is accelerated, the hydraulic oil is deteriorated, and the service life of the oil is shortened; the sealing device can be rapidly aged and deteriorated due to the overhigh oil temperature, and the sealing function is lost. The steering system of the mining dump truck continuously works for a long time, the heat productivity of the steering system is large, and in order to avoid the adverse effect of high oil temperature on the hydraulic system, a heat dissipation device is necessary to be additionally arranged on the hydraulic system of the dump truck.

The current mining dump truck belongs to mobile equipment, which is not smaller than fixed equipment, and the installation space of components of the mining dump truck is narrow and unqualified. Fig. 1 is a schematic structural diagram of a heat dissipation device of a hydraulic system of a mining dump truck in the prior art. Referring to fig. 1, a radiator 51 and a motor fan 52 are generally required to be separately arranged in a heat dissipation device of a hydraulic system of a conventional mining dump truck, and the working principle of the heat dissipation device is that the radiator 51 is installed in front of the fan, the motor fan 52 rotates to form air flow, and hydraulic oil flows through the radiator 51 to dissipate heat.

Although the heat dissipation effect is good, the design needs a larger space to accommodate the newly added motor fan 52 and the heat sink 51 of the heat dissipation device, and the shapes of the motor fan 52 and the heat sink 51 are fixed, which is not beneficial to installation in a special-shaped or narrow space; in addition, the mining dump truck adopts a 24V control system, and the additional installation of the motor can increase the electrical load of the system and easily cause storage battery feed.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a mining dump truck hydraulic system's heat abstractor and mining dump truck hydraulic system to solve among the prior art mining dump truck hydraulic system's heat abstractor volume too big, the fixed technical problem that just can increase mining dump truck hydraulic system's electric load of shape.

The technical problem of the utility model is solved and the following technical scheme is adopted to realize.

The utility model provides a mining dump truck hydraulic system's heat abstractor, heat abstractor set up and keep away from one side of engine water tank at the water tank fan and fix to the frame on, mining dump truck hydraulic system heat abstractor includes:

the protection plate is bent to form a vertical plate and a horizontal plate, the vertical plate and the horizontal plate enclose to form an accommodating space, and the vertical plate is fixed to the frame;

the square radiating pipe is positioned in an accommodating space formed by enclosing the vertical plate and the horizontal plate, and comprises a first connecting part, a second connecting part and a plurality of bending parts connected between the first connecting part and the second connecting part, and the first connecting part and the second connecting part are respectively fixed on the frame; the plurality of bending parts are fixed above the horizontal plate;

the radiating fins are spirally wound on the outer surface of the square radiating pipe;

the frame is arranged on the back of the vertical plate and is exposed out of two ends of the vertical plate; hydraulic oil of the hydraulic system of the mining dump truck flows in through one of the first connecting part and the second connecting part of the square-shaped radiating pipe and flows out through the other of the first connecting part and the second connecting part, and the water tank fan and the radiating fins are used for cooling the hydraulic oil.

In an embodiment of the present invention, the plurality of bent portions of the square-shaped heat dissipation pipe are all in a "U" shape or a "V" shape.

In one embodiment of the present invention, the cross section of the protection plate is "L" shaped along the extending direction of the first connecting portion like the second connecting portion.

In an embodiment of the present invention, the zigzag radiating pipe has a hollow structure, and the material of the zigzag radiating pipe is selected from at least one of steel, aluminum and iron.

In an embodiment of the present invention, the first connecting portion and the second connecting portion of the square-shaped heat dissipation pipe are fixed on the vertical plate through the pipe clamp, and the mounting points of the first connecting portion and the second connecting portion on the vertical plate are located on the same horizontal line.

In an embodiment of the present invention, one of the bent portions of the square-shaped radiating pipe close to the horizontal plate is fixed on the upper surface of the horizontal plate by the mounting bracket.

In one embodiment of the present invention, the mounting bracket is connected between the horizontal plate and the clip-shaped heat dissipation pipe through a fastener.

The utility model also provides a mining dump truck hydraulic system, include as above heat abstractor.

The utility model discloses an in one embodiment, mining dump truck hydraulic system still includes: the hydraulic steering system comprises a steering pump, a steering gear, a first oil return pipe, a right steering oil pipe, a left steering oil pipe, a steering oil cylinder and a hydraulic oil tank, wherein the steering pump provides power for the hydraulic system of the mining dump truck, the hydraulic oil tank, the steering gear, the left steering oil pipe, the steering oil cylinder and the right steering oil pipe are sequentially connected, the right steering oil pipe is connected with the steering gear, one end of the first oil return pipe is connected to the steering gear, and the other end of the first oil return pipe is respectively connected with the hydraulic oil tank and a heat dissipation device through an oil return tee joint.

In an embodiment of the utility model, mining dump truck hydraulic system still includes the second and returns oil pipe, and the second returns oil union coupling between oil return tee bend and heat abstractor

The utility model provides a mining dump truck hydraulic system's heat abstractor and mining dump truck hydraulic system, this heat abstractor set up and keep away from one side of engine water tank at the water tank fan and fix to the frame on, heat abstractor includes: the protection plate is bent to form a vertical plate and a horizontal plate, the bent vertical plate and the horizontal plate are located in the containing space formed by enclosing the vertical plate and the horizontal plate, the bent radiating pipe comprises a first connecting portion, a second connecting portion and a plurality of bending portions connected between the first connecting portion and the second connecting portion, and the radiating fins are spirally wound on the outer surface of the bent radiating pipe. The utility model discloses a fix heat abstractor in one side that engine water tank was kept away from to the water tank fan and fix to the frame to make heat abstractor's the shape cooling tube that returns include a plurality of kink, not only can adjust heat abstractor's shape and size in a flexible way, more be fit for narrow and small or special-shaped installation space, can also utilize current water tank fan, can not increase tipper hydraulic system's electric load.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application. In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

Fig. 1 is a schematic structural diagram of a heat dissipation device of a hydraulic system of a mining dump truck in the prior art.

Fig. 2 is a front view of the heat dissipation device in the embodiment of the present invention.

Fig. 3 is a side view of a heat dissipation device according to an embodiment of the present invention.

Fig. 4 is a schematic perspective view of a heat dissipation device according to an embodiment of the present invention.

Fig. 5 is the embodiment of the utility model provides an in the heat abstractor install to mining dump truck hydraulic system's schematic structure view.

The implementation, functional features and advantages of the objectives of the present application will be further explained with reference to the accompanying drawings. With the above figures, there are shown specific embodiments of the present application, which will be described in more detail below. These drawings and written description are not intended to limit the scope of the inventive concepts in any manner, but rather to illustrate the inventive concepts to those skilled in the art by reference to specific embodiments.

Detailed Description

The following description of the embodiments of the present application is provided for illustrative purposes, and other advantages and capabilities of the present application will become apparent to those skilled in the art from the present disclosure.

In the following description, reference is made to the accompanying drawings that describe several embodiments of the application. It is to be understood that other embodiments may be utilized and mechanical composition, construction, and operational changes may be made without departing from the spirit and scope of the present invention. The following detailed description is not to be taken in a limiting sense, and the scope of various embodiments of the present invention is defined only by the claims of the issued patent. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

Although the terms first, second, etc. may be used herein to describe various elements in some embodiments, these elements should not be limited by these terms. These terms are only used to distinguish one element from another.

Fig. 2 is a front view of the heat dissipation device in the embodiment of the present invention, fig. 3 is a side view of the heat dissipation device in the embodiment of the present invention, and fig. 4 is a schematic view of a three-dimensional structure of the heat dissipation device in the embodiment of the present invention. Referring to fig. 2 to 4, an embodiment of the present invention provides a heat dissipation device for a hydraulic system of a mining dump truck, the heat dissipation device is disposed on one side of a water tank fan 10 (fig. 5) away from an engine water tank 20 (fig. 5) and fixed to a frame 32, and the heat dissipation device specifically includes:

the protection plate 31 is bent to form a vertical plate 311 and a horizontal plate 312, the vertical plate 311 and the horizontal plate 312 enclose to form a containing space, and the top end of the vertical plate 311 is fixed on the frame 32;

the square radiating pipe 33 is positioned in the accommodating space formed by the enclosing of the vertical plate 311 and the horizontal plate 312, the square radiating pipe 33 comprises a first connecting part 331, a second connecting part 332 and a plurality of bending parts 333 connected between the first connecting part 331 and the second connecting part 332, and the first connecting part 331 and the second connecting part 332 are respectively fixed on the frame 32; a plurality of bending parts 333 are fixed above the horizontal plate 312;

and a radiating fin 34 spirally wound around the outer surface of the zigzag-shaped radiating pipe 33.

The frame 32 is arranged on the back surface of the vertical plate 311 and is exposed from two ends of the vertical plate 311, and hydraulic oil of the hydraulic system of the mining dump truck flows in through one of the first connecting portion 331 and the second connecting portion 332 of the zigzag radiating pipe 33 and flows out through the other one of the first connecting portion 331 and the second connecting portion 332.

Referring to fig. 2, the bent portions 333 of the square-shaped heat pipe 33 are all "U" shaped, and the bent portions 333 are parallel to each other and disposed in the middle of the square-shaped heat pipe 33. In other embodiments, the bending portions 333 may not be parallel to each other, and the shape thereof may be adjusted according to the actual installation space, for example, the bending portions 33 may be adjusted to be "V" shaped, so that the heat dissipation device has a smaller volume and a more variable shape, and is more suitable for a narrow or irregular installation space.

Referring to fig. 3, the cross section of the protection plate 31 is L-shaped, and the specific bending shape and deformation size of the protection plate can be changed according to the installation position of the heat dissipation device. In this embodiment, the square-shaped radiating pipe 33 is a hollow structure, hydraulic oil of the hydraulic system of the mining dump truck can be contained in the square-shaped radiating pipe 33, and in order to take account of the rigidity and the heat transfer capability of the square-shaped radiating pipe 33, the material of the square-shaped radiating pipe 33 is preferably steel, and in other embodiments, the material of the square-shaped radiating pipe 33 may be selected from at least one of steel, aluminum and iron.

Referring to fig. 2 to 4, the first connection portion 331 and the second connection portion 332 of the square-shaped radiating pipe 33 are fixed on the vertical plate 311 by the pipe clamp 36, and the mounting points of the first connection portion 331 and the second connection portion 332 on the vertical plate 311 are located on the same horizontal line. One bent portion 333 of the plurality of bent portions 333 of the bent pipe 33 close to the horizontal plate 312 is fixed to the upper surface of the horizontal plate 312 by the mounting bracket 35. Specifically, the mounting bracket 35 is coupled between the horizontal plate 312 and the bent radiating pipe 33 by the fastening member.

Fig. 5 is the embodiment of the utility model provides an in the heat abstractor install to mining dump truck hydraulic system's schematic structure view. Please refer to fig. 5, an embodiment of the present invention further provides a mining dump truck hydraulic system including the above heat dissipation device, and the mining dump truck hydraulic system specifically further includes: the hydraulic system comprises a steering pump 101, a steering gear 103, a first oil return pipe 104, a second oil return pipe 106, a right steering oil pipe 110, a left steering oil pipe 111, a steering oil cylinder 112 and a hydraulic oil tank 114, wherein the steering pump 101 provides power for the hydraulic system of the mining dump truck.

The hydraulic oil tank 114, the steering gear 103, the left steering oil pipe 111, the steering oil cylinder 112 and the right steering oil pipe 110 are sequentially connected, the right steering oil pipe 110 and the steering gear 103 are connected with each other, one end of the first oil return pipe 104 is connected to the steering gear 103, and the other end of the first oil return pipe 104 is respectively connected with the hydraulic oil tank 114 and the heat dissipation device through an oil return tee 105. Specifically, a priority valve (not shown) is connected between the return tee and the hydraulic oil tank 114.

Wherein, the second oil return pipe 106 is connected between the oil return tee 105 and the heat sink. The hydraulic oil in the second oil return pipe 106 flows in through one of the first connection portion 331 (fig. 2) and the second connection portion 332 (fig. 2) of the zigzag-shaped heat pipe 33 and flows out through the other of the first connection portion 331 and the second connection portion 332.

The flow path of the hydraulic oil in the hydraulic system of the mining dump truck is described below with reference to different working conditions of the steering gear 103.

The steering pump 101 powers the hydraulic system of the mining dump truck and transfers hydraulic oil from the hydraulic oil tank 114 to a priority valve (not shown). When the steering gear 103 is not rotating, the hydraulic oil reaches the heat sink directly through the priority valve via the return three-way 105 and the second return line 106. At this time, the radiator fan 10 rotates to form an air flow, so that the heat sink and the engine radiator 20 dissipate heat synchronously, and the cooled hydraulic oil returns to the hydraulic oil tank 114 through the third oil return pipe 113. Because the steering system and the lifting system share the hydraulic oil tank, the heat dissipation device can dissipate heat of the whole hydraulic system.

When the steering gear 103 rotates to the left, the hydraulic oil reaches the steering gear 103 through the priority valve, then reaches the steering cylinder 112 through the left steering oil pipe 111, pushes the steering cylinder 112 to move, and the hydraulic oil in the steering cylinder 112 returns to the steering gear 103 through the right steering oil pipe 110, and then reaches the heat sink through the first oil return pipe 104, the oil return tee joint 105 and the second oil return pipe 106.

When the steering gear 103 rotates to the right, the hydraulic oil reaches the steering gear 103 through the priority valve, then reaches the steering cylinder 112 through the right steering oil pipe 110, pushes the steering cylinder 112 to move, and the hydraulic oil in the steering cylinder 112 returns to the steering gear 103 through the left steering oil pipe 111, and then reaches the heat sink through the first oil return pipe 104, the oil return tee joint 105 and the second oil return pipe 106.

The utility model provides a mining dump truck hydraulic system's heat abstractor and mining dump truck hydraulic system, this heat abstractor set up and keep away from one side of engine water tank 20 and fix to frame 32 at water tank fan 10 on, heat abstractor includes: the heat radiating pipe comprises a protection plate 31, a square radiating pipe 33 and a heat radiating fin 34, wherein the protection plate 31 is bent to form a vertical plate 311 and a horizontal plate 312, the square radiating pipe 33 is positioned in an accommodating space formed by the vertical plate 311 and the horizontal plate 312 in a surrounding mode, the square radiating pipe 33 comprises a first connecting portion 331, a second connecting portion 332 and a plurality of bending portions 333 connected between the first connecting portion 331 and the second connecting portion 332, and the heat radiating fin 34 is spirally wound on the outer surface of the square radiating pipe 33. The utility model discloses a fix heat abstractor in one side that engine water tank 20 was kept away from to water tank fan 10 and fix to frame 32 to make heat abstractor's the shape cooling tube 33 that returns include a plurality of kink 332, not only can adjust heat abstractor's shape and size in a flexible way, more be fit for narrow and small or special-shaped installation space, can also utilize current water tank fan 10, can not increase tipper hydraulic system's electric load.

As used herein, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, including not only those elements listed, but also other elements not expressly listed.

In this document, the terms front, back, upper and lower are used to define the components in the drawings and the positions of the components relative to each other, and are used for clarity and convenience of the technical solution. It is to be understood that the use of the directional terms should not be taken to limit the scope of the claims.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims

1. The heat dissipation device for the hydraulic system of the mining dump truck is characterized in that the heat dissipation device is arranged on one side, away from an engine water tank (20), of a water tank fan (10) and is fixed to a frame (32), and comprises:

the protective plate (31) is bent to form a vertical plate (311) and a horizontal plate (312), the vertical plate (311) and the horizontal plate (312) enclose to form a containing space, and the vertical plate (311) is fixed to the frame (32);

the square radiating pipe (33) is positioned in the accommodating space formed by enclosing the vertical plate (311) and the horizontal plate (312), the square radiating pipe (33) comprises a first connecting part (331), a second connecting part (332) and a plurality of bending parts (333) connected between the first connecting part (331) and the second connecting part (332), and the first connecting part (331) and the second connecting part (332) are respectively fixed on the frame (32); the bending parts (333) are fixed above the horizontal plate (312);

and a radiating fin (34) spirally wound on the outer surface of the zigzag radiating pipe (33);

the frame (32) is arranged on the back of the vertical plate (311) and is exposed out of two ends of the vertical plate (311); the hydraulic oil of the hydraulic system of the mining dump truck flows in through one of the first connecting portion (331) and the second connecting portion (332) of the zigzag radiating pipe (33) and flows out through the other one of the first connecting portion (331) and the second connecting portion (332), and the water tank fan (10) and the radiating fins (34) are used for cooling the hydraulic oil.

2. The heat dissipating device as claimed in claim 1, wherein the bent portions (333) of the bent pipe (33) are formed in a "U" shape or a "V" shape.

3. The heat dissipating device according to claim 1, wherein the shielding plate (31) has an "L" shape in cross section along a direction in which the first connecting portion (331) extends toward the second connecting portion (332).

4. The heat dissipating device as claimed in claim 1, wherein the zigzag-shaped heat dissipating pipe (33) has a hollow structure, and the material of the zigzag-shaped heat dissipating pipe (33) is selected from one of steel, aluminum and iron.

5. The heat radiating device as claimed in claim 1, wherein the first connecting portion (331) and the second connecting portion (332) of the zigzag radiating pipe (33) are fixed to the vertical plate (311) by means of pipe clamps (36), and the mounting points of the first connecting portion (331) and the second connecting portion (332) on the vertical plate (311) are located on the same horizontal line.

6. The heat dissipating device as claimed in claim 1, wherein one of the bent portions (333) of the bent pipe (33) adjacent to the horizontal plate (312) is fixed to the upper surface of the horizontal plate (312) by a mounting bracket (35).

7. The heat dissipating device of claim 6, wherein the mounting bracket (35) is connected between the horizontal plate (312) and the pipe (33) by a fastener.

8. A mining dump truck hydraulic system characterized by comprising the heat dissipating device according to any one of claims 1 to 7.

9. The mining dump truck hydraulic system of claim 8, further comprising: the mining dump truck comprises a steering pump (101), a steering gear (103), a first oil return pipe (104), a right steering oil pipe (110), a left steering oil pipe (111), a steering oil cylinder (112) and a hydraulic oil tank (114), wherein the steering pump (101) provides power for a hydraulic system of the mining dump truck, the hydraulic oil tank (114), the steering gear (103), the left steering oil pipe (111), the steering oil cylinder (112) and the right steering oil pipe (110) are sequentially connected, the right steering oil pipe (110) is connected with the steering gear (103), one end of the first oil return pipe (104) is connected to the steering gear (103), and the other end of the first oil return pipe (104) is respectively connected with the hydraulic oil tank (114) and the heat dissipation device through an oil return tee joint (105).

10. The mining dump truck hydraulic system according to claim 8, characterized in that the mining dump truck hydraulic system further comprises a second oil return pipe (106), and the second oil return pipe (106) is connected between the oil return tee (105) and the heat sink.