CN106915714B - Industrial vehicle - Google Patents

Industrial vehicle Download PDF

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Publication number
CN106915714B
CN106915714B CN201510991275.0A CN201510991275A CN106915714B CN 106915714 B CN106915714 B CN 106915714B CN 201510991275 A CN201510991275 A CN 201510991275A CN 106915714 B CN106915714 B CN 106915714B
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China
Prior art keywords
rear wheel
wheel assembly
double
vehicle body
vehicle
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Active
Application number
CN201510991275.0A
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Chinese (zh)
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CN106915714A (en
Inventor
李胜利
刘志刚
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BYD Co Ltd
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BYD Co Ltd
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66FHOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F9/00Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
    • B66F9/06Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
    • B66F9/07Floor-to-roof stacking devices, e.g. "stacker cranes", "retrievers"
    • B66F9/072Travelling gear therefor
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66FHOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F9/00Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
    • B66F9/06Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
    • B66F9/075Constructional features or details
    • B66F9/07513Details concerning the chassis

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  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Vehicle Body Suspensions (AREA)

Abstract

According to the industrial vehicle provided by the invention, the rear wheel assembly can be adjusted in the height direction, the trafficability of the whole vehicle is favorably improved when the road surface is fluctuated, particularly when the vehicle encounters an obstacle, and the carrying operation capacity of the industrial vehicle is improved.

Description

Industrial vehicle
Technical Field
The invention belongs to the technical field of engineering machinery, and particularly relates to an industrial vehicle.
Background
Industrial vehicles are commonly used transportation means in industrial production for handling, pushing, hauling, lifting, stacking or palletizing various goods. For example, the electric pallet stacker is an industrial vehicle, and in the prior art, a rear wheel assembly of the electric pallet stacker is fixedly connected with a vehicle body, and the vehicle body is not adjustable in the height direction, so that the rear wheel assembly is also not adjustable in the height direction, which affects the trafficability of the whole vehicle, especially the trafficability of the whole vehicle when encountering an obstacle.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. To this end, an object of the invention is to propose an industrial vehicle.
The industrial vehicle comprises a vehicle body and a rear wheel assembly, wherein a driving piece is connected between the rear wheel assembly and the vehicle body, and the driving piece is used for driving the rear wheel assembly to ascend or descend relative to the vehicle body.
According to the industrial vehicle provided by the invention, the adjustment of the rear wheel assembly in the height direction can be realized, the passing performance of the whole vehicle is favorably improved when the road surface is fluctuated, particularly when the industrial vehicle meets an obstacle, and the carrying operation capacity of the industrial vehicle is improved.
In addition, the industrial vehicle according to the above embodiment of the present invention may further have the following additional technical features:
optionally, the driving member is a double-acting cylinder, and two ends of the double-acting cylinder are respectively connected with the vehicle body and the rear wheel assembly so as to drive the rear wheel assembly to ascend or descend relative to the vehicle body.
Optionally, both ends of the double-acting oil cylinder are rotatably connected with the vehicle body and the rear wheel assembly respectively.
Optionally, a guide means for guiding the raising or lowering of the rear wheel assembly is further included.
Optionally, the guide device comprises a guide rail arranged on the vehicle body and a protruding part arranged on the rear wheel assembly, the protruding part is matched with the guide rail, and the protruding part can slide in the guide rail.
Optionally, the guide rails are located on the left side and the right side of the vehicle body and are arranged oppositely, and the protruding portions are located on the left side and the right side of the rear wheel assembly and are arranged oppositely.
Optionally, the double-acting cylinder includes a rod cavity and a rodless cavity, the rod cavity and the rodless cavity are respectively located on two sides of a piston of the double-acting cylinder, the rodless cavity is depressurized when the rod cavity is pressurized, so that the double-acting cylinder is shortened, and the rodless cavity is pressurized when the rod cavity is depressurized, so that the double-acting cylinder is extended.
Optionally, the system further comprises a control device, and the control device controls the extension and retraction of the double-acting oil cylinder.
Optionally, the rear wheel assembly comprises: the driving wheels and the balance wheels are respectively arranged on the left side and the right side of the vehicle body.
Optionally, the vehicle further comprises a power device, wherein the power device is fixedly connected with the rear wheel assembly, and the power device is used for ascending or descending the rear wheel assembly.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic view of a structure of an industrial vehicle in the related art.
Fig. 2 is a schematic structural diagram of an industrial vehicle according to an embodiment of the present invention.
FIG. 3 is a schematic structural view of a rear wheel assembly according to an embodiment of the present invention.
Fig. 4 is a schematic structural view of a vehicle body according to an embodiment of the present invention.
FIG. 5 is a schematic diagram of a double-acting cylinder according to an embodiment of the present invention.
FIG. 6 is a hydraulic schematic of a double acting cylinder according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In the description of the present invention, it is to be understood that the terms "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "inner," "outer," "axial," "radial," "circumferential," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings, which is used for convenience in describing the invention and to simplify the description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and is not to be construed as limiting the 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 specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; they may be mechanically coupled, directly coupled, indirectly coupled through intervening media, coupled between two elements, or coupled in any other manner that does not materially affect the operation of the device, unless otherwise specifically limited. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. 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.
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
The improved industrial vehicle is a common transportation tool, the electric pallet stacker is one of industrial vehicles, and as shown in fig. 1, the structure schematic diagram of the industrial vehicle in the prior art includes a vehicle body 1 and a rear wheel assembly 2, the vehicle body 1 is fixedly connected with the rear wheel assembly 2, the position of the vehicle body 1 in the whole vehicle is not adjustable, that is, the vehicle body 1 is not adjustable in the height direction, therefore, the rear wheel assembly 2 is also not adjustable in the height direction, which may affect the trafficability of the whole vehicle, especially affect the trafficability of the whole vehicle when encountering obstacles.
To this end, the present invention provides an industrial vehicle, which is shown in fig. 2, and the industrial vehicle comprises a vehicle body 1 and a rear wheel assembly 2, wherein a driving member 3 is connected between the rear wheel assembly 2 and the vehicle body 1, and the driving member 3 is used for driving the rear wheel assembly 2 to ascend or descend relative to the vehicle body 1.
According to the industrial vehicle provided by the invention, as shown in the structural schematic diagram of the rear wheel assembly shown in fig. 3, the rear wheel assembly 2 comprises the driving wheel 21, the balance wheel 22 and the mounting assembly 23 which are respectively arranged on the left side and the right side of the vehicle body, the driving wheel 21, the balance wheel 22 and the mounting assembly 23 for fixing the balance wheel 22 and the driving wheel 21 form the main part of the rear part of the whole vehicle, the main part of the rear part of the whole vehicle is lifted along with the adjustment of the rear wheel assembly 2 in the height direction, and the driving wheel 21 and the balance wheel 22 can form a certain gap with the ground, so that the passing performance of the whole vehicle is improved when the road surface is fluctuated, particularly when an obstacle is encountered.
In one embodiment of the present invention, as shown in fig. 2 and 5, the driving member 3 is a double-acting cylinder 30, and both ends of the double-acting cylinder 30 are respectively connected to the vehicle body 1 and the rear wheel assembly 2 to drive the rear wheel assembly 2 to ascend or descend relative to the vehicle body.
The double-acting cylinder 30 includes a piston 31 and a cylinder body 32, an extended end of the piston 31 is connected to one of the vehicle body 1 and the rear wheel assembly 2, and an end of the cylinder body 32 is connected to the other of the vehicle body 1 and the rear wheel assembly 2.
Both ends of the double-acting cylinder 30 are rotatably connected to the vehicle body 1 and the rear wheel assembly 2, respectively, that is, an extended end of the piston 31 is rotatably connected to one of the vehicle body 1 and the rear wheel assembly 2, and an end of the cylinder body 32 is rotatably connected to the other of the vehicle body 1 and the rear wheel assembly 2.
In one embodiment, the rear wheel assembly 2 is provided with a first lug 24, the first lug 24 may be provided on the mounting assembly 23 and extend upward, the first lug 24 may be provided with a through hole, one end of the double-acting cylinder 30 may be hinged at the through hole of the first lug 24, alternatively, the first lug 24 may be two, and one end of the double-acting cylinder 30 may be hinged between the two first lugs 24 through a pin.
As shown in fig. 4, the vehicle body 1 is provided with a second lug 11, the second lug 11 may be disposed on the vehicle body 1 and extend towards the rear of the whole vehicle, a through hole may be disposed on the second lug 11, one end of the double-acting cylinder 30 may be hinged at the through hole of the second lug 11, alternatively, the second lug 11 may be two, and one end of the double-acting cylinder 30 may be hinged between the two second lugs 11 through a pin.
The automobile body 1 backward forms and holds the cavity, it is used for holding rear wheel subassembly 2 to hold the cavity, rear wheel subassembly 2 can rise or descend in holding the cavity, and for this reason, holds the cavity and can set up to the open semi-closed cavity in lower part, holds the lower part of cavity and is equipped with the opening that is suitable for rear wheel subassembly 2 to pass. Of course, the upper part of the accommodating cavity can be selectively closed or opened as required.
The industrial vehicle further includes a guide device for guiding the ascent or descent of the rear wheel assembly 2. Since both ends of the double acting cylinder 30 are rotatably connected to the vehicle body 1 and the rear wheel assembly 2, respectively, it is necessary to guide the elevation of the rear wheel assembly 2 so that the rear wheel assembly 2 is height-adjusted on a predetermined trajectory.
In one embodiment, the guiding means comprise a guide rail 12 arranged on the body 1 and a projection 25 arranged on the rear wheel assembly 2, said projection 25 being adapted to the guide rail 12 and said projection 25 being slidable within the guide rail 12. The cooperation of said projections 25 with the guide rails 12 allows the rear wheel assembly 2 to be height-adjusted on a predetermined trajectory.
The guide rails 12 are located on the left and right sides of the vehicle body 1 and are oppositely arranged, specifically, the guide rails 12 are located on the left and right inner sides of the vehicle body 1, the protruding parts 25 are located on the left and right sides of the rear wheel assembly 2 and are oppositely arranged, specifically, the protruding parts 25 are located on the left and right outer sides of the rear wheel assembly 2, and the positions of the protruding parts 25 and the positions of the guide rails 12 located on the same side are in one-to-one correspondence.
Of course, other variations of the guide device are possible, but it should be understood that those skilled in the art may change, modify, replace and modify the above-described embodiments within the scope of the present invention. For example: the position of the guide rail 12 and the projection 25, or the engagement of the rail and the roller, etc.
As shown in fig. 5, the cylinder 32 of the double-acting cylinder 30 includes a rod chamber 321 and a rod-less chamber 322, the rod chamber 321 and the rod-less chamber 322 are respectively located at two sides of the piston 31 of the double-acting cylinder 30, when the rod chamber 321 is pressurized, the rod-less chamber 322 is depressurized, the extending end of the piston 31 is shortened, so that the double-acting cylinder 30 is shortened, when the rod chamber 321 is depressurized, the rod-less chamber 322 is pressurized, and the extending end of the piston 31 is extended, so that the double-acting cylinder 30 is extended.
As shown in fig. 6, the rod chamber 321 and the rod-less chamber 322 may communicate with the tank 302 through the selector valve 301, so that when one of the rod chamber 321 and the rod-less chamber 322 is supplied with high-pressure oil, the other of the rod chamber 321 and the rod-less chamber 322 is supplied with high-pressure oil, that is, the rod-less chamber 322 is depressurized when the rod chamber 321 is pressurized, and the rod-less chamber 322 is pressurized when the rod chamber 321 is depressurized.
Specifically, as shown in fig. 6, the direction valve 301 may be a three-position four-way electromagnetic direction valve, the direction valve 301 may include a first port 303, a second port 304, a third port 305, and a fourth port 306, and the direction valve 301 may be switched among a first position, a second position, and a third position. When the reversing valve 301 is in the first position, the oil path enters from the first port 303 to the fourth port 306, and simultaneously the oil path enters from the third port 305 to the second port 304; when the direction valve 301 is in the second position, the first port 303, the second port 304, the third port 305 and the fourth port 306 are not communicated; when the direction valve 301 is in the third position, the oil path from the first port 303 to the third port 305 and the oil path from the fourth port 306 to the second port 304.
As shown in fig. 6, the rod chamber 321 may be connected to the third port 305, the rod-less chamber 322 may be connected to the fourth port 306, the first port 303 and the second port 304 may both be connected to the tank 302, and a check valve 307 that feeds oil toward the first port 303 may be connected between the first port 303 and the tank 302.
When the reversing valve 301 is located at the first position, the rodless cavity 322 is filled with oil and pressurized, and the rod cavity 321 is filled with oil and depressurized, so that the double-acting oil cylinder 30 is extended; when the reversing valve 301 is in the third position, the rodless chamber 322 is drained and depressurized, and the rod chamber 321 is drained and pressurized, so that the double-acting cylinder 30 is shortened.
The industrial vehicle further includes: a control device that controls the extension and retraction of the double-acting cylinder 30. The control device can control the opening and closing of the valve port of the oil path and the switching of the direction of the oil path, thereby realizing the telescopic control of the double-acting oil cylinder 30. When the rear wheel assembly of the industrial vehicle encounters an obstacle, the control device controls the reversing valve 301 to be in the third position, the oil path enters the third valve port 305 from the first valve port 303 and then exits from the second valve port 304 from the fourth valve port 306, the oil in the rodless cavity 322 flows out and is reduced in pressure, the oil in the rod cavity 321 flows in and is pressurized, so that the double-acting oil cylinder 30 is shortened, at the moment, the rear wheel assembly 2 is lifted up because the length of the double-acting oil cylinder 30 is shortened, and the driving wheel 21 and the balance wheel 22 can form a certain gap with the ground, so that the whole vehicle can pass through smoothly; when the rear wheel assembly of the industrial vehicle passes through an obstacle, the control device controls the reversing valve 301 to be in the first position, the oil path enters from the first port 303 to the fourth port 306 and simultaneously enters from the third port 305 to the second port 304, the oil enters from the rodless cavity 322 to be pressurized, the oil exits from the rod cavity 321 to be depressurized, so that the double-acting oil cylinder 30 extends, the rear wheel assembly 2 is pressed down, and the driving wheel 21 and the balance wheel 22 return to the normal positions again.
The double-acting oil cylinder 30 is stable in stretching and retracting, can generate large moment and is suitable for lifting the rear wheel assembly 2.
The industrial vehicle provided by the invention further comprises: and the power device 4 is fixedly connected with the rear wheel assembly 2, and the power device 4 ascends or descends the rear wheel assembly 2. Thus, the rear structure of the industrial vehicle is completely lifted, and the trafficability of the whole vehicle is further improved. In one embodiment, the power unit 4 includes a drive motor (not shown) and a tiller 41.
The accommodating cavity can also accommodate a driving motor, the accommodating cavity plays a role in protecting the driving motor and the rear wheel assembly 2, and the accommodating cavity is favorable for the attractiveness of the whole vehicle.
The industrial vehicle further comprises a portal frame 5 and a pallet fork 6, wherein the portal frame 5 is fixedly connected with the vehicle body 1, and the portal frame 5 can enable the pallet fork 6 to be adjusted in the height direction, so that stacking of cargoes is achieved.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims (7)

1. The industrial vehicle comprises a vehicle body and a rear wheel assembly and is characterized by further comprising a double-acting oil cylinder and a guide device, wherein one end of the double-acting oil cylinder is rotatably connected with the rear wheel assembly, the other end of the double-acting oil cylinder is rotatably connected with the side wall of the vehicle body so as to drive the rear wheel assembly to ascend or descend relative to the vehicle body, and the guide device is used for guiding the ascending or descending of the rear wheel assembly.
2. The industrial vehicle of claim 1, wherein the guide means comprises a guide rail provided on the vehicle body and a projection provided on the rear wheel assembly, the projection fitting with the guide rail and being slidable within the guide rail.
3. The industrial vehicle as claimed in claim 2 wherein the rails are located on the left and right sides of the vehicle body and are opposed, and the projections are located on the left and right sides of the rear wheel assembly and are opposed.
4. The industrial vehicle of claim 3, wherein the double-acting cylinder includes a rod chamber and a rodless chamber, the rod chamber and the rodless chamber located on either side of a piston of the double-acting cylinder, respectively, the rodless chamber depressurizes when the rod chamber is pressurized to shorten the double-acting cylinder, and the rodless chamber pressurizes when the rod chamber is depressurized to lengthen the double-acting cylinder.
5. The industrial vehicle of claim 4, further comprising a control device that controls extension and retraction of the double-acting cylinder.
6. The industrial vehicle as claimed in claim 5 wherein the rear wheel assembly comprises: the driving wheel is arranged on the left side of the vehicle body, the balance wheel is arranged on the right side of the vehicle body, and the mounting assembly is used for fixing the balance wheel and the driving wheel.
7. The industrial vehicle as claimed in claim 6 further comprising a power plant fixedly connected to the rear wheel assembly, the power plant then raising or lowering the wheel assembly.
CN201510991275.0A 2015-12-25 2015-12-25 Industrial vehicle Active CN106915714B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510991275.0A CN106915714B (en) 2015-12-25 2015-12-25 Industrial vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510991275.0A CN106915714B (en) 2015-12-25 2015-12-25 Industrial vehicle

Publications (2)

Publication Number Publication Date
CN106915714A CN106915714A (en) 2017-07-04
CN106915714B true CN106915714B (en) 2019-12-20

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CN201510991275.0A Active CN106915714B (en) 2015-12-25 2015-12-25 Industrial vehicle

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Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7281736B2 (en) * 2004-01-06 2007-10-16 Jlg Industries, Inc. Pothole protection mechanism
HRP20060332A2 (en) * 2006-10-02 2008-04-30 Star�evi� Lazo Chair for disabled person specially adapter for stairs and bariers
EP2272478B1 (en) * 2007-02-08 2012-05-23 Invacare Corporation Wheelchair suspension
US8214970B2 (en) * 2009-12-15 2012-07-10 General Electric Company Wheel system with lifter apparatus
CN204184411U (en) * 2014-08-26 2015-03-04 上海宝冶集团有限公司 A kind of plate pusher of energy leaping over obstacles
CN204136700U (en) * 2014-08-28 2015-02-04 比亚迪股份有限公司 Balance wheel assembly and the fork truck with it

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