JPS6242840B2 - - Google Patents
Info
- Publication number
- JPS6242840B2 JPS6242840B2 JP56200864A JP20086481A JPS6242840B2 JP S6242840 B2 JPS6242840 B2 JP S6242840B2 JP 56200864 A JP56200864 A JP 56200864A JP 20086481 A JP20086481 A JP 20086481A JP S6242840 B2 JPS6242840 B2 JP S6242840B2
- Authority
- JP
- Japan
- Prior art keywords
- counterweight
- upper wall
- wall portion
- vehicle body
- vertical wall
- 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.)
- Expired
Links
Landscapes
- Jib Cranes (AREA)
- Forklifts And Lifting Vehicles (AREA)
Description
【発明の詳細な説明】
この発明は、三輪式フオークリフトに最適な産
業車両のカウンタウエイト取付け装置に関するも
のである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a counterweight mounting device for an industrial vehicle that is most suitable for a three-wheeled forklift.
従来、三輪式フオークリフトにおけるカウンタ
ウエイトの取付け装置としては、例えば第１図に
示すように２つの前輪１と１つの後輪３とを備え
た三輪式フオークリフトの車体フレーム５の後部
に、上方に向つて延設した縦壁部９を設けるとと
もに、この縦壁部９の上下部から車体の長手方向
後方に向つて上壁部１１ａと下壁部１１ｂとを延
設し、この上壁部１１ａと下壁部１１ｂとの間に
カウンタウエイト１３を挿入するとともに、縦壁
部９と下壁部１１ｂとによつてカウンタウエイト
１３をボルト等（図示せず）により固定し、上壁
部１１ａにより後輪３を支持するようにしてい
た。 Conventionally, as a counterweight mounting device for a three-wheeled forklift, for example, as shown in FIG. A vertical wall portion 9 is provided extending toward the vehicle body, and an upper wall portion 11a and a lower wall portion 11b are provided extending from the upper and lower portions of the vertical wall portion 9 toward the rear in the longitudinal direction of the vehicle body. The counterweight 13 is inserted between the vertical wall part 9 and the lower wall part 11b, and the counterweight 13 is fixed with bolts or the like (not shown) between the vertical wall part 9 and the lower wall part 11b. The rear wheel 3 was supported by this.
しかしながらこのような従来のカウンタウエイ
ト取付け装置にあつては、カウンタウエイト１３
の重量Ｗ（重心はＧで示す）の一部ＷAが縦壁部
９のＡ点（ボルト止め位置）に下向きに作用し、
残部ＷBが下壁部１１ｂのＢ点に下向きに作用す
るとともに、後輪３を支承した上壁部１１ａには
後輪３からの荷重反力Ｒが上向きに作用する構成
となつていたため、上壁部１１ａと下壁部１１ｂ
とには非常に大きな曲げモーメントと剪断力とが
働くものであつた。 However, in such a conventional counterweight mounting device, the counterweight 13
A part of the weight W (the center of gravity is indicated by G) acts downward on the point A (the bolted position) of the vertical wall part 9,
Since the remaining portion W B acts downwardly on point B of the lower wall portion 11b, and the load reaction force R from the rear wheel 3 acts upwardly on the upper wall portion 11a supporting the rear wheel 3, Upper wall portion 11a and lower wall portion 11b
A very large bending moment and shearing force were applied to this process.
このため、上壁部１１ａと下壁部１１ｂとにリ
ブ等をもうけて大がかりに補強する必要があるば
かりでなく、カウンタウエイト１３の取付けに際
して上壁部１１ａと下壁部１１ｂの間に大重量物
であるカウンタウエイト１３を差し込まなければ
ならず組付け作業性が極めて悪いという問題があ
つた。 For this reason, it is not only necessary to provide ribs or the like on the upper wall part 11a and the lower wall part 11b to provide large-scale reinforcement, but also to install a large amount of weight between the upper wall part 11a and the lower wall part 11b when installing the counterweight 13. There was a problem in that the counterweight 13, which is a physical object, had to be inserted, and the assembly workability was extremely poor.
この発明は、かかる従来の問題点に着目して案
出されたもので、上壁部と下壁部とに作用する曲
げモーメント及び剪断力に対して大がかりな補強
をせずに十分に対応できるように構成するととも
に、組付け作業性を良好にした産業車両のカウン
タウエイト取付け装置を提供するものである。 This invention was devised by focusing on such conventional problems, and can sufficiently cope with the bending moment and shearing force acting on the upper wall and the lower wall without requiring large-scale reinforcement. It is an object of the present invention to provide a counterweight mounting device for an industrial vehicle which is configured as follows and has good assembly workability.
この発明は上記目的を達成させるため、２個の
前輪と１個の後輪を備えた産業車両において、車
体後部に車体の上方に向つて延設した縦壁部を設
けると共に、この縦壁部の上部から車体長手方向
後方に向つて延設した上壁部を設け、前記縦壁部
と上壁部にてそれぞれカウンタウエイトを支持さ
せ、かつ、後輪をカウンタウエイトの左右中間の
空所に位置させると共に上壁部にて支持させるよ
うにし、上壁部に支持されるカウンタウエイトの
支持点と、後輪からの荷重反力の作用中心と、カ
ウンタウエイトの重心とが車体側方よりみて、ほ
ぼ同一の鉛直線上にあるようにしたことを要旨と
するものである。 In order to achieve the above object, the present invention provides an industrial vehicle having two front wheels and one rear wheel with a vertical wall section extending upwardly from the rear of the vehicle body. An upper wall extending from the top of the vehicle body toward the rear in the longitudinal direction of the vehicle is provided, a counterweight is supported by each of the vertical wall and the upper wall, and the rear wheel is placed in a space between the left and right of the counterweight. The support point of the counterweight supported on the upper wall, the center of action of the load reaction force from the rear wheels, and the center of gravity of the counterweight are aligned when viewed from the side of the vehicle. , are arranged on almost the same vertical line.
以下この発明の実施例を第２図〜第６図に基づ
いて説明する。 Embodiments of the present invention will be described below with reference to FIGS. 2 to 6.
なお、以下の説明で従来例と同一構成要素は同
一符号を附して説明は省略する。 In the following description, the same components as those in the conventional example are given the same reference numerals, and the description thereof will be omitted.
第２図は２つの前輪１と１つの後輪３とを持つ
三輪式フオークリフトの車体７の全体側面図を示
し、５は車体フレーム、９は車体フレーム５の後
方に車体上下方向に向つて延設された縦壁部であ
る。１１は、縦壁部９の上部から車体長手方向後
方に向つて延設された上壁部、１３はカウンタウ
エイトである。前記縦壁部９には、第３図に示す
ように２個の取付けブラケツト１５が溶接等によ
り固着され、またこの取付けブラケツト１５に
は、カウンタウエイト１３の前面部分１３ａに鋳
込まれた取付けボルト１７がナツト１９を介して
固定支持されるようになつている。 FIG. 2 shows an overall side view of a vehicle body 7 of a three-wheeled forklift having two front wheels 1 and one rear wheel 3, with reference numeral 5 indicating a vehicle body frame, and reference numeral 9 indicating a vehicle body behind the vehicle body frame 5 in the vertical direction of the vehicle body. This is an extended vertical wall. Reference numeral 11 indicates an upper wall portion extending rearward in the longitudinal direction of the vehicle body from the upper portion of the vertical wall portion 9, and 13 indicates a counterweight. Two mounting brackets 15 are fixed to the vertical wall portion 9 by welding or the like, as shown in FIG. 17 is fixedly supported via a nut 19.
また、前記フレーム５の後部上方に設けられた
上壁部１１の中央部には、後輪３の車軸２１を挿
通させて支持するための取付けボス２３が形成さ
れている。 Further, a mounting boss 23 is formed in the center of the upper wall portion 11 provided above the rear portion of the frame 5, through which the axle 21 of the rear wheel 3 is inserted and supported.
またフレーム５の縦壁部９と上壁部１１とに取
付けられるカウンタウエイト１３は、断面Ｌ字状
に形成され、このカウンタウエイト１３の前面部
分には前述のように２本の取付けボルト１７が配
設され、また上部には上壁部１１に載置させる凸
状の座面２５が形成されている。この座面２５を
支持する上壁部１１上の支持点Ｂは、車体側方よ
りみて（第２図、第４図の状態で）後輪３からの
荷重反力Ｒの作用中心とカウンタウエイト１３の
重量Ｗの重心Ｇとを結ぶ直線上に位置させる構成
となつている。なお２７は、カウンタウエイト１
３の上面に鋳造等により埋設されたフツクであつ
て、フレーム５の上壁部１１上に、カウンタウエ
イト１３を例えばクレーン等により吊り上げワイ
ヤ２９を介して吊り上げた状態で載置させる場合
に有効なものである。 Further, the counterweight 13 attached to the vertical wall portion 9 and the upper wall portion 11 of the frame 5 has an L-shaped cross section, and the two mounting bolts 17 are attached to the front portion of the counterweight 13 as described above. A convex seat surface 25 to be placed on the upper wall portion 11 is formed on the upper portion. A support point B on the upper wall portion 11 that supports the seat surface 25 is located between the center of action of the load reaction force R from the rear wheel 3 and the counterweight when viewed from the side of the vehicle body (in the state shown in FIGS. 2 and 4). It is configured to be positioned on a straight line connecting the center of gravity G of the weight W of No. 13. Note that 27 is counterweight 1
3 is a hook embedded by casting or the like on the upper surface of the frame 5, and is effective when the counterweight 13 is placed on the upper wall portion 11 of the frame 5 while being lifted by a crane or the like via a lifting wire 29. It is something.
次に上記のような構成から成るこの実施例の作
用について説明する。 Next, the operation of this embodiment constructed as described above will be explained.
先ず第５図に示すように、図示しないクレーン
等により、吊り上げワイヤ２９並びにフツク２７
を介してカウンタウエイト１３を吊り上げ、この
ような状態で縦壁部９と上壁部１１とに取付ける
わけであるが第４図に示すように、カウンタウエ
イト１３が取付けられた状態では、カウンタウエ
イト１３の重量Ｗの分力ＷAが縦壁部９との取付
部Ａ点（ボルト止め位置）に下向きに作用し、ま
たカウンタウエイト１３の上部における分力ＷB
が上壁部１１の載置部Ｂ点に下向きに作用する。
尚、一般に載置部Ｂ点の方が取付部Ａ点よりカウ
ンタウエイト１３の重心Ｇに近いため、分力ＷB
とＷAは、ＷB≫ＷAの関係となる。 First, as shown in FIG. 5, the lifting wire 29 and hook 27 are lifted by a crane or the like (not shown).
The counterweight 13 is lifted up through the holder and attached to the vertical wall section 9 and the upper wall section 11 in this state.As shown in Fig. 4, when the counterweight 13 is attached, A component force W A of the weight W of the counterweight 13 acts downward on the attachment point A (bolt fixing position) with the vertical wall part 9, and a component force W B at the upper part of the counterweight 13
acts downward on point B of the mounting portion of the upper wall portion 11.
In addition, since point B of the mounting part is generally closer to the center of gravity G of the counterweight 13 than point A of the mounting part, the component force W B
and W A have the relationship W B ≫ W A .
また一方、後輪３の車軸２１からの荷重反力Ｒ
が上壁部１１の載置部Ｂ点の下方から上向きに作
用するため、上壁部１１の上下面には相反する上
下の荷重ＷB、Ｒが作用することとなり、上壁部
１１に作用する曲げモーメント及び剪断力は著し
く小さくなる。従つて、上壁部１１と縦壁部９と
の間には、従来のような大がかりなリブ等の補強
部材を介設する必要がないか、また補強部材を設
けるとしても小型のもので良い。 On the other hand, the load reaction force R from the axle 21 of the rear wheel 3
acts upward from below the point B of the placement part of the upper wall part 11, so that contradictory upper and lower loads W B and R act on the upper and lower surfaces of the upper wall part 11, which act on the upper wall part 11. The bending moments and shear forces generated are significantly smaller. Therefore, between the upper wall portion 11 and the vertical wall portion 9, there is no need to provide a reinforcing member such as a large-scale rib as in the conventional case, or even if a reinforcing member is provided, it may be small. .
また、第６図はカウンタウエイト１３の上部
が、上壁部１１の載置部Ｂ点からずれ落ちたり、
移動したりするのを有効に防止するため、載置部
Ｂ点の外側に突起状のストツパ３１を溶接等によ
り固設したものである。 In addition, FIG. 6 shows that the upper part of the counterweight 13 has slipped from the point B of the mounting part of the upper wall part 11,
In order to effectively prevent movement, a protruding stopper 31 is fixed by welding or the like on the outside of point B of the placing portion.
これによつてカウンタウエイト１３の座面２５
を上壁部１１の載置部Ｂ点に載置した際に、座面
２５がストツパ３１に引掛かつて、車体振動等に
よりカウンタウエイト１３の上部が脱落したり移
動したりすることがない。 As a result, the seat surface 25 of the counterweight 13
When the counterweight 13 is placed on the placing part B point of the upper wall part 11, the seat surface 25 is caught on the stopper 31, and the upper part of the counterweight 13 will not fall off or move due to vehicle body vibration or the like.
この発明は上記のように、２個の前輪と１個の
後輪を備えた産業車両において、車体後部に車体
の上方に向つて延設した縦壁部を設けると共に、
この縦壁部の上部から車体長手方向後方に向つて
延設した上壁部を設け、前記縦壁部と上壁部にて
それぞれカウンタウエイトを支持させ、かつ、後
輪をカウンタウエイトの左右中間の空所に位置さ
せると共に上壁部にて支持させるようにし、上壁
部に支持されるカウンタウエイトの支持点と、後
輪からの荷重反力の作用中心と、カウンタウエイ
トの重心とが車体側方よりみて、ほぼ同一の鉛直
線上にあるようにしたため、フレームの縦壁部と
上壁部とに作用する曲げモーメント及び剪断力に
よる荷重と後輪からの荷重反力とが荷重相殺さ
れ、従つて上壁部の補強部材が少なくて済むとと
もに、カウンタウエイトの組付け作業を容易に行
なうことができる効果がある。 As described above, the present invention provides an industrial vehicle having two front wheels and one rear wheel, in which a vertical wall portion extending upwardly from the vehicle body is provided at the rear of the vehicle body, and
An upper wall section is provided that extends rearward in the longitudinal direction of the vehicle body from the upper part of the vertical wall section, and the counterweight is supported by the vertical wall section and the upper wall section, respectively, and the rear wheel is placed between the left and right of the counterweight. The support point of the counterweight supported on the upper wall, the center of action of the load reaction force from the rear wheels, and the center of gravity of the counterweight are aligned with the vehicle body. When viewed from the side, they are placed on almost the same vertical line, so that the load due to the bending moment and shearing force acting on the vertical wall and the upper wall of the frame and the load reaction force from the rear wheels cancel each other out. Therefore, the number of reinforcing members for the upper wall portion can be reduced, and the work of assembling the counterweight can be easily performed.
第１図は従来の三輪式フオークリフトのカウン
タウエイトの取付け状態を示す模式図、第２図は
この発明のカウンタウエイトを取付けた状態を示
す三輪式フオークリフトの側面図、第３図は車体
後部とカウンタウエイトとの分解斜視図、第４図
はこの発明のカウンタウエイトの取付け状態を示
すフオークリフトの模式図、第５図は第４図の
―線に沿う断面図、第６図は他の実施例を示す
模式図である。
（図面に表わされた主要な符号の説明） １…
前輪、３…後輪、５…フレーム、７…車体、９…
縦壁部、１１…上壁部、１３…カウンタウエイ
ト、Ｒ…荷重反力、Ｇ…重心。
Figure 1 is a schematic diagram showing how the counterweight of a conventional three-wheeled forklift is installed, Figure 2 is a side view of the three-wheeled forklift with the counterweight of the present invention installed, and Figure 3 is a rear view of the vehicle body. FIG. 4 is a schematic diagram of a forklift showing the installation state of the counterweight of the present invention, FIG. 5 is a sectional view taken along line - in FIG. 4, and FIG. It is a schematic diagram showing an example. (Explanation of main symbols shown in the drawings) 1...
Front wheel, 3... Rear wheel, 5... Frame, 7... Vehicle body, 9...
Vertical wall portion, 11... Upper wall portion, 13... Counterweight, R... Load reaction force, G... Center of gravity.
Claims (1)
おいて、車体後部に車体の上方に向つて延設した
縦壁部を設けると共に、この縦壁部の上部から車
体長手方向後方に向つて延設した上壁部を設け、
前記縦壁部と上壁部にてそれぞれカウンタウエイ
トを支持させ、かつ、後輪をカウンタウエイトの
左右中間の空所に位置させると共に上壁部にて支
持させるようにし、上壁部に支持されるカウンタ
ウエイトの支持点と、後輪からの荷重反力の作用
中心と、カウンタウエイトの重心とが車体側方よ
りみて、ほぼ同一の鉛直線上にあるようにしたこ
とを特徴とする産業車両のカウンタウエイト取付
け装置。1. In an industrial vehicle equipped with two front wheels and one rear wheel, a vertical wall extending upward from the vehicle body is provided at the rear of the vehicle body, and a vertical wall extending from the top of the vertical wall toward the rear in the longitudinal direction of the vehicle body is provided. An upper wall section extending from the top is provided.
A counterweight is supported by the vertical wall portion and the upper wall portion, respectively, and the rear wheel is positioned in a space between the left and right of the counterweight and supported by the upper wall portion, and the rear wheel is supported by the upper wall portion. An industrial vehicle characterized in that the support point of the counterweight, the center of action of the load reaction force from the rear wheels, and the center of gravity of the counterweight are located on almost the same vertical line when viewed from the side of the vehicle body. Counterweight attachment device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20086481A JPS58104900A (en) | 1981-12-15 | 1981-12-15 | Device for mounting counterweight of industrial car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20086481A JPS58104900A (en) | 1981-12-15 | 1981-12-15 | Device for mounting counterweight of industrial car |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58104900A JPS58104900A (en) | 1983-06-22 |
| JPS6242840B2 true JPS6242840B2 (en) | 1987-09-10 |
Family
ID=16431488
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20086481A Granted JPS58104900A (en) | 1981-12-15 | 1981-12-15 | Device for mounting counterweight of industrial car |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58104900A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2797790B2 (en) * | 1991-11-20 | 1998-09-17 | 日産自動車株式会社 | Mounting structure of counterweight for industrial vehicles |
| DE102017003730B4 (en) * | 2017-04-18 | 2020-08-20 | Liebherr-Werk Ehingen Gmbh | Vehicle frame for a mobile crane and mobile crane |
-
1981
- 1981-12-15 JP JP20086481A patent/JPS58104900A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58104900A (en) | 1983-06-22 |
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