CN109467026A - A kind of Non-tail frame fork truck - Google Patents
A kind of Non-tail frame fork truck Download PDFInfo
- Publication number
- CN109467026A CN109467026A CN201811624929.6A CN201811624929A CN109467026A CN 109467026 A CN109467026 A CN 109467026A CN 201811624929 A CN201811624929 A CN 201811624929A CN 109467026 A CN109467026 A CN 109467026A
- Authority
- CN
- China
- Prior art keywords
- fitting surface
- bolt
- vehicle frame
- fork truck
- tail
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000407 epitaxy Methods 0.000 claims description 3
- 238000005457 optimization Methods 0.000 abstract description 4
- 238000005520 cutting process Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 2
- 238000009434 installation Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 230000002457 bidirectional effect Effects 0.000 description 1
- 235000008429 bread Nutrition 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000036316 preload Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, 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
- B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
- B66F9/06—Devices 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
- B66F9/075—Constructional features or details
- B66F9/07504—Accessories, e.g. for towing, charging, locking
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Forklifts And Lifting Vehicles (AREA)
Abstract
The invention discloses a kind of Non-tail frame fork trucks, balance weight including being fixedly connected on vehicle frame tail portion, and the side of balance weight is formed with the counterweight fitting surface for connecting vehicle frame, the counterweight fitting surface includes the first fitting surface, the second fitting surface and third fitting surface, second fitting surface is formed in the junction of the first fitting surface Yu third fitting surface, and second fitting surface it is horizontally disposed, the second bolt being fixedly connected for vertical direction with vehicle frame tail portion is provided on second fitting surface.The existing Non-tail frame fork truck counterweight structure design of re-optimization of the present invention, balance weight after the optimization is by changing the structure with vehicle frame joint face, it is made of the power that the first bolt provides the moment of couple of horizontal direction and the vertical direction of the second bolt offer, so that main power is all from the axial force of bolt, it is greatly reduced the demand to cutting to power, when especially reply rear axle falls or impacts operating condition, stablizing effect outstanding is produced, structure is relatively reliable.
Description
Technical field
The present invention relates to fork truck technical field, specially a kind of Non-tail frame fork truck.
Background technique
The most common combination of fork truck vehicle body is that vehicle frame and rear axle are completed after assembling at present, and balance weight is finally mounted on
The tail portion of vehicle frame, i.e., on " tailstock ".The structure causes tailstock space waste larger, is unfavorable for the demand of small size vehicle body, therefore
Slowly there are many fork trucks now using Non-tail frame structure, i.e., vehicle frame is no longer arranged tailstock structure but by rear axle and balance weight
It is connect after completing assembly with vehicle frame front and back.And in existing Non-tail frame fork truck, the interconnecting piece of vehicle frame and balance weight is disposed as erecting
Straight plane, and be bolted to connection, this kind, which is fixedly connected with mode, to be applied can be applicable in smaller tonnage fork car, but if directly
It scoops out to use on 6-10t fork truck and then there is biggish stress defect problem, be easy to cause body structure unstable, how to solve to put down
The installation question of weight has to be solved at related technical personnel.
Summary of the invention
The purpose of the present invention is to provide a kind of Non-tail frame fork trucks, to solve the problems mentioned in the above background technology.
To achieve the above object, the invention provides the following technical scheme: a kind of Non-tail frame fork truck, including it is fixedly connected on vehicle
The balance weight of frame tail portion, and the side of balance weight is formed with the counterweight fitting surface for connecting vehicle frame, the counterweight assembles bread
The first fitting surface, the second fitting surface and third fitting surface are included, second fitting surface is formed in the first fitting surface and third fills
Junction with face, and the second fitting surface is horizontally disposed, is provided on first fitting surface and third fitting surface for water
Square to the first bolt being fixedly connected with vehicle frame tail portion, it is provided on second fitting surface for vertical direction and vehicle frame tail
The second bolt that portion is fixedly connected.
First fitting surface and third fitting surface are vertically arranged, and the third fitting surface is located under the first fitting surface
Side, and the outside of the first fitting surface horizontal direction is arranged in along the second fitting surface epitaxy part for third fitting surface.
The tail portion of the vehicle frame is formed with the tailstock fitting surface for matching connection counterweight fitting surface, the tailstock fitting surface
On offer screw hole for being fixedly connected with the first bolt and the second bolt.
First bolt and the second bolt are provided with where it multiple respectively on transverse axis of plane.
Two are each provided on first fitting surface and third fitting surface, and about its, respectively fitting surface longitudinal axis is symmetrical
The first bolt being arranged, there are two about symmetrically arranged second spiral shell of its fitting surface longitudinal axis for setting on second fitting surface
Bolt.
As shown from the above technical solution, the existing Non-tail frame fork truck counterweight structure design of re-optimization of the present invention is different
In the balance weight for only having vertical fitting surface in the past, balance weight after the optimization is by changing the structure with vehicle frame joint face, by the
The power composition for the vertical direction that one bolt provides the moment of couple of horizontal direction and the second bolt provides, so that main power is all from spiral shell
The axial force of bolt is greatly reduced the demand to cutting to power, when especially reply rear axle falls or impacts operating condition, produces prominent
Stablizing effect out, structure are relatively reliable.
Detailed description of the invention
Fig. 1 is counterweight structure schematic diagram of the present invention；
Fig. 2 is balance weight scheme of installation of the present invention；
Fig. 3 is the local scheme of installation of the present invention；
Fig. 4 is balance weight side structure schematic diagram of the present invention；
Fig. 5 is the bolt strained analysis chart of fork truck zero load at the uniform velocity in the prior art；
Fig. 6 is the bolt strained analysis chart that fork truck is fully loaded at the uniform velocity in the prior art；
Fig. 7 is the bolt strained analysis chart that fork truck zero load in the prior art accelerates；
Fig. 8 is the bolt strained analysis chart that fork truck zero load in the prior art is slowed down；
Fig. 9 be in the prior art fork-truck steering when bolt strained analysis chart；
Figure 10 is the bolt strained analysis chart of fork truck in the prior art；
Figure 11 is the bolt strained analysis chart of fork truck of the present invention.
In figure: 1 balance weight, 2 vehicle frames, 3 tailstock fitting surfaces, 4 counterweight fitting surfaces, 41 first fitting surfaces, 42 second fitting surfaces,
43 third fitting surfaces, 5 first bolts, 6 second bolts, 7 steeraxles.
Specific embodiment
The present invention will be further described with reference to the accompanying drawing:
As shown in Figs 1-4, a kind of Non-tail frame fork truck, the balance weight 1 including being fixedly connected on 2 tail portion of vehicle frame, and balance weight 1
Side be formed with the counterweight fitting surface 4 for connecting vehicle frame 2, the tail portion of the vehicle frame 2 is formed with for matching connection counterweight
The tailstock fitting surface 3 of fitting surface 4 is offered for being fixedly connected with the first bolt 5 and the second bolt 6 on the tailstock fitting surface 3
Screw hole；The counterweight fitting surface 4 includes the first fitting surface 41, the second fitting surface 42 and third fitting surface 43, and described second
Fitting surface 42 is formed in the junction of the first fitting surface 41 and third fitting surface 43, and the second fitting surface 42 is horizontally disposed, described
The first bolt being fixedly connected for horizontal direction with 2 tail portion of vehicle frame is provided on first fitting surface 41 and third fitting surface 43
5, the second bolt 6 being fixedly connected for vertical direction with 2 tail portion of vehicle frame is provided on second fitting surface 42, passes through bolt
Balance weight 1 is fixedly connected with vehicle frame 2 across the screw hole being provided on tailstock fitting surface 3.
Further, two are each provided on first fitting surface 41 and third fitting surface 43 about its respective fitting surface
Symmetrically arranged first bolt 5 of longitudinal axis, there are two about its fitting surface longitudinal axis for setting on second fitting surface 42
Symmetrically arranged second bolt 6, the present embodiment does not limit the specific installation number of the first bolt 5 and the second bolt 6, preferably at it
Respective fitting surface can play the role of effectively being fixedly connected there are two being fixedly connected.
In the prior art, the tail portion of vehicle frame 2 is bolted to connection with balance weight 1, but contact surface is perpendicular,
The present embodiment is vertically arranged using first fitting surface 41 and third fitting surface 43, and the third fitting surface 43 is located at first
The lower section of fitting surface 41, and third fitting surface 43 is arranged along 42 epitaxy part of the second fitting surface in 41 horizontal direction of the first fitting surface
Outside, traditional connection type is as shown in Figure 10 and Figure 11, using balance weight in the prior art as research object from basic
Can be obtained in force analysis figure, wherein the direction of power does not represent actual loading direction, under different operating conditions, if it is reversed when, then for
Negative value, in which: G- gravity, FaInertia force, FNGround supports power, Ff- rolling resistance, F1x/F1Y/F1x/F2YRespectively two o'clock by
The bidirectional force arrived；F1X/F2XIf be negative, which bears pulling force to the left, then provides the axial force by bolt pretightening, remains
Remaining part point is then used for shearing resistance, i.e. guarantee F1Y/F2Y；And if F1X/F2XFor timing, bolt strained receiving pressure, i.e. vehicle frame 2 and balance
It weighs 1 mutually to press, and the power is superimposed with bolt pretightening and increases positive pressure, and generates bigger shearing resistance；According in figure by
Power analysis, can calculate the F under each operating condition1X、F2XAnd F1Y+F2YThese three amounts.
As viewed in figures 5-8, when car body travels in different operating conditions, main stress is F1XWith F2XResistance FaWith FfIt is remaining afterwards
Part forms a pair of of moment of couple, this contends with to the torque for the formation that misplaces between the moment of couple and vertical force.Therefore, in order to reduce
The power need to increase F to the preload force request of bolt1XWith F2XThe distance between.
As shown in figure 9, work as car body during the turn, F11(F11XAnd F11ZWith joint efforts, F11XAnd F11ZFor F11In X and Z two
Direction component) and F12(F12XAnd F12ZIt is with joint efforts) F in Fig. 5-81Two be arranged on the first fitting surface (41) are about its dress
Stress with symmetrically arranged first bolt (5) of face longitudinal axis.The force analysis shown from the figure is as it can be seen that F11Z and F12Z is used
In the Z axis component for resisting Fa, the part F11X is used to balance the X-direction component of Fa, remaining to form the moment of couple with F12X, with Fa's
The torque that Z-direction and F11Z, F12Z are formed contends with.Therefore, the distance between F11X and F12X are answered in arrangement in structure
It is big as far as possible.
As shown in Figure 10, which is the impact working condition chart that traditional car body structure is subject to when encountering bumpy road, when
When rear axle generation is fallen, steeraxle will receive enormous impact, and FN will appear moment maximum value, which causes simultaneously cuts to power F1Y
+F2YBecome larger, while causing F the reason of because of torque simultaneously1XWith F2YThe moment of couple of formation becomes larger.
The balance for obtaining fork truck in Fig. 5-10 can be arranged by the force analysis of above-mentioned fork truck balance weight in the prior art
Weight force analysis；
For original structure:
F1x=F2x
F1Y+F2Y+G=FN
F1xA+GD=FNC
It is derived from:
F1x=F2x=(FNC-GD)/A
F1Y+F2Y=FN-G
Wherein, both F1Y and F2Y exist as stiction, and the distribution of the two can not calculate, and reality is to connect when distributing
Light deformation when cut between from contacting surface to power, allocation proportion are that local stiffness compares, and the high component of rigidity then undertakes more.
As shown in figure 11, the second fitting surface 42 that horizontal end face is had used by the present embodiment, y to three power,
Wherein F1y and F2y cutting to power between contact surface, and F3y is the positive force of two face contacts, two kinds of contact properties are in limiting condition
When, it is believed that front face, rigidity is infinitely great, then F1y and F2y is negligible；And for the direction x, there is also above-mentioned by F3x
Situation, but F2x is pulling force, in equalising torque analysis, F3x and F3y are in middle position, force value be also it is smaller, under this operating condition, if
F3x disappears can then propose requirements at the higher level to remaining bolt, therefore can ignore F3x when calculating, force analysis are as follows:
F2x=F1x
F3y+G=FN
F1xA+GD+F3yG=FNC
It is derived from:
F1x=F2x=(FNC-GD- (FN-G) G)/A
F3y=FN-G
Wherein, F1X, F1Y, F2X, F2Y are the stress point of the first bolt 5, and F3X and F3Y are the stress of the second bolt 6
Point；So far, input known quantity obtains following data, wherein 10 times of 7 loads of unloaded steeraxle of ground supports power value:
By chart it is found that when original structure is used for 3.5t fork truck, impacting under operating condition is only 150kN to tools for bolts ' pretension force request,
And it is used to reach when 10t fork truck 407kN, but after structure updating, maximum power F3y is undertaken by horizontal plane normal pressure, not
The requirement to bolt is formed, and only needs 132kN in terms of pulling force.
By above structure analysis it can be concluded that, when balance weight 1 possesses counterweight fitting surface 4 used by the present embodiment, then
It can be greatly improved in the structural advantages of horizontal end face by the second set fitting surface 42.
Embodiment described above only describe the preferred embodiments of the invention, not to model of the invention
It encloses and is defined, without departing from the spirit of the design of the present invention, those of ordinary skill in the art are to technical side of the invention
The various changes and improvements that case is made should all be fallen into the protection scope that claims of the present invention determines.
Claims (5)
1. a kind of Non-tail frame fork truck, it is characterised in that: the balance weight (1) including being fixedly connected on vehicle frame (2) tail portion, and balance weight
(1) side is formed with the counterweight fitting surface (4) for connecting vehicle frame (2), and the counterweight fitting surface (4) includes the first assembly
Face (41), the second fitting surface (42) and third fitting surface (43), second fitting surface (42) are formed in the first fitting surface (41)
With the junction of third fitting surface (43), and the second fitting surface (42) is horizontally disposed, and first fitting surface (41) and third fill
With the first bolt (5) being fixedly connected for horizontal direction with vehicle frame (2) tail portion is provided on face (43), described second is assembled
The second bolt (6) being fixedly connected for vertical direction with vehicle frame (2) tail portion is provided on face (42).
2. a kind of Non-tail frame fork truck according to claim 1, it is characterised in that: first fitting surface (41) and third dress
It is vertically arranged with face (43), the third fitting surface (43) is located at the lower section of the first fitting surface (41), and third fitting surface
(43) it is arranged along the second fitting surface (42) epitaxy part in the outside of the first fitting surface (41) horizontal direction.
3. a kind of Non-tail frame fork truck according to claim 1, it is characterised in that: the tail portion of the vehicle frame (2) forms useful
It offers on the tailstock fitting surface (3) of pairing connection counterweight fitting surface (4), the tailstock fitting surface (3) for being fixedly connected
The screw hole of first bolt (5) and the second bolt (6).
4. a kind of Non-tail frame fork truck according to claim 1, it is characterised in that: first bolt (5) and the second bolt
(6) it is provided on transverse axis of plane where it respectively multiple.
5. a kind of Non-tail frame fork truck according to claim 4, it is characterised in that: first fitting surface (41) and third dress
With being each provided with two on face (43) about its respective symmetrically arranged first bolt (5) of fitting surface longitudinal axis, described second
There are two about symmetrically arranged second bolt (6) of its fitting surface longitudinal axis for setting on fitting surface (42).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811624929.6A CN109467026A (en) | 2018-12-28 | 2018-12-28 | A kind of Non-tail frame fork truck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811624929.6A CN109467026A (en) | 2018-12-28 | 2018-12-28 | A kind of Non-tail frame fork truck |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109467026A true CN109467026A (en) | 2019-03-15 |
Family
ID=65678121
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811624929.6A Pending CN109467026A (en) | 2018-12-28 | 2018-12-28 | A kind of Non-tail frame fork truck |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109467026A (en) |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04148797A (en) * | 1990-10-09 | 1992-05-21 | Nissan Motor Co Ltd | Supporting structure for balance weight of industrial vehicle |
| JPH08282414A (en) * | 1995-04-17 | 1996-10-29 | Toyota Autom Loom Works Ltd | Industrial vehicle |
| JPH1081495A (en) * | 1996-09-05 | 1998-03-31 | Toyota Autom Loom Works Ltd | Rear axle mounting structure for industrial vehicle |
| JPH10297890A (en) * | 1997-04-25 | 1998-11-10 | Toyota Autom Loom Works Ltd | Counter weight for forklift |
| JP2000063095A (en) * | 1998-08-25 | 2000-02-29 | Mitsubishi Heavy Ind Ltd | Body structure for battery forklift truck |
| JP2001151487A (en) * | 1999-12-01 | 2001-06-05 | Nippon Yusoki Co Ltd | Weight mounting structure in counter balance type forklift |
| KR200297461Y1 (en) * | 2002-06-19 | 2002-12-12 | 현대중공업 주식회사 | Adjustable Counterweight for fork lift truck |
| US20040216299A1 (en) * | 2003-03-27 | 2004-11-04 | Hiroshi Kobayashi | Structure of mounting weight in forklift truck |
| JP2011006192A (en) * | 2009-06-25 | 2011-01-13 | Nippon Yusoki Co Ltd | Counterweight structure in tricycle forklift |
| CN204846086U (en) * | 2015-08-05 | 2015-12-09 | 林德（中国）叉车有限公司 | Connection structure of fork truck frame, peaceful balance weight of overhead guard |
| CN207957661U (en) * | 2018-03-12 | 2018-10-12 | 浙江加力仓储设备股份有限公司 | A kind of body assembly of type storage-battery balancing weight fork truck |
| CN208071222U (en) * | 2018-03-26 | 2018-11-09 | 安徽合力股份有限公司 | A kind of balance weight being used for three pivot electric forklifts |
| CN209481120U (en) * | 2018-12-28 | 2019-10-11 | 安徽合力股份有限公司 | A kind of Non-tail frame fork truck |
-
2018
- 2018-12-28 CN CN201811624929.6A patent/CN109467026A/en active Pending
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04148797A (en) * | 1990-10-09 | 1992-05-21 | Nissan Motor Co Ltd | Supporting structure for balance weight of industrial vehicle |
| JPH08282414A (en) * | 1995-04-17 | 1996-10-29 | Toyota Autom Loom Works Ltd | Industrial vehicle |
| JPH1081495A (en) * | 1996-09-05 | 1998-03-31 | Toyota Autom Loom Works Ltd | Rear axle mounting structure for industrial vehicle |
| JPH10297890A (en) * | 1997-04-25 | 1998-11-10 | Toyota Autom Loom Works Ltd | Counter weight for forklift |
| JP2000063095A (en) * | 1998-08-25 | 2000-02-29 | Mitsubishi Heavy Ind Ltd | Body structure for battery forklift truck |
| JP2001151487A (en) * | 1999-12-01 | 2001-06-05 | Nippon Yusoki Co Ltd | Weight mounting structure in counter balance type forklift |
| KR200297461Y1 (en) * | 2002-06-19 | 2002-12-12 | 현대중공업 주식회사 | Adjustable Counterweight for fork lift truck |
| US20040216299A1 (en) * | 2003-03-27 | 2004-11-04 | Hiroshi Kobayashi | Structure of mounting weight in forklift truck |
| JP2011006192A (en) * | 2009-06-25 | 2011-01-13 | Nippon Yusoki Co Ltd | Counterweight structure in tricycle forklift |
| CN204846086U (en) * | 2015-08-05 | 2015-12-09 | 林德（中国）叉车有限公司 | Connection structure of fork truck frame, peaceful balance weight of overhead guard |
| CN207957661U (en) * | 2018-03-12 | 2018-10-12 | 浙江加力仓储设备股份有限公司 | A kind of body assembly of type storage-battery balancing weight fork truck |
| CN208071222U (en) * | 2018-03-26 | 2018-11-09 | 安徽合力股份有限公司 | A kind of balance weight being used for three pivot electric forklifts |
| CN209481120U (en) * | 2018-12-28 | 2019-10-11 | 安徽合力股份有限公司 | A kind of Non-tail frame fork truck |
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