JPH0543036Y2 - - Google Patents
Info
- Publication number
- JPH0543036Y2 JPH0543036Y2 JP13618287U JP13618287U JPH0543036Y2 JP H0543036 Y2 JPH0543036 Y2 JP H0543036Y2 JP 13618287 U JP13618287 U JP 13618287U JP 13618287 U JP13618287 U JP 13618287U JP H0543036 Y2 JPH0543036 Y2 JP H0543036Y2
- Authority
- JP
- Japan
- Prior art keywords
- pallet
- fork
- cargo
- detecting
- vehicle body
- 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 - Lifetime
Links
- 210000000078 claw Anatomy 0.000 claims description 25
- 230000002265 prevention Effects 0.000 claims description 2
- 230000003287 optical effect Effects 0.000 description 5
- 238000001514 detection method Methods 0.000 description 4
- 230000005856 abnormality Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003028 elevating effect Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
Landscapes
- Forklifts And Lifting Vehicles (AREA)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
本考案は、荷役車両における荷物のくずれを防
止する装置に関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a device for preventing cargo from collapsing in a cargo handling vehicle.
車体に装着したマストに沿つてフオーク爪を上
下動自在に取付け、このフオーク爪をパレツトに
挿入して上昇することで荷物を持ち上げ運搬し、
フオーク爪を下降してパレツトを他の荷物の上に
載置した後に車体を後退してフオーク爪をパレツ
トより引き出して荷役作業する荷役車両が知られ
ている。
A fork claw is attached to the mast attached to the vehicle body so that it can move up and down, and the fork claw is inserted into the pallet and rises to lift and transport the cargo.
2. Description of the Related Art Cargo handling vehicles are known in which cargo handling operations are carried out by lowering fork claws to place a pallet on top of other cargo, then reversing the vehicle body and pulling out the fork claws from the pallet.
このような荷役車両においては、フオーク爪を
パレツトより引き抜く際にフオーク爪がパレツト
に接触してフオーク爪とともにパレツトが引き動
かされることで荷物がくずれたり、落下したりす
ることがある。 In such a cargo handling vehicle, when the fork claws are pulled out from the pallet, the fork claws come into contact with the pallet and the pallet is moved along with the fork claws, causing the cargo to collapse or fall.
そこで、従来は第６図に示すようにフオーク爪
ａの先端上部に接触式スイツチｂを取付け、この
接触式スイツチｂがパレツトｃと接触してONす
ることでフオーク爪ａとパレツトｃが接触したこ
とを感知し、それによつてフオーク爪ａを下降し
てパレツトｃと接触しないようにする荷くずれ防
止する装置が知られている。 Therefore, in the past, as shown in Fig. 6, a contact type switch b was attached to the top of the tip of the fork claw a, and when the contact type switch b came into contact with the pallet c and turned on, the fork claw a and the pallet c came into contact. There is a known device for preventing the load from collapsing by detecting this and thereby lowering the fork claw a to prevent it from coming into contact with the pallet c.
かかる荷くずれ防止装置であると、接触式スイ
ツチｂがパレツトｃと接触するために接触式スイ
ツチｂを破損したり、接触式スイツチｂの駆動部
にゴミ等が溜つて動作不能となつて誤動作するこ
とがある。
In such a device for preventing load collapse, the contact switch b comes into contact with the pallet c, which may damage the contact switch b, or the drive section of the contact switch b may become inoperable due to dust etc., resulting in malfunction. Sometimes.
そこで、本考案は前述の問題点を解決できるよ
うにした荷役車両の荷くずれ防止装置を提供する
ことを目的とする。 SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a cargo shifting prevention device for a cargo handling vehicle that can solve the above-mentioned problems.
車体の走行距離を検出する手段と、フオーク爪
のパレツトに対する移動量を検出する手段と、車
体の後退走行距離がフオーク爪のパレツトに対す
る移動量より大きい時に信号を出力する手段とを
設けて、その信号によつて荷くずれを防止する操
作を行なうことができるようにしたものである。
Means for detecting the travel distance of the vehicle body, means for detecting the amount of movement of the fork pawl relative to the pallet, and means for outputting a signal when the backward travel distance of the vehicle body is greater than the amount of movement of the fork pawl relative to the pallet are provided. It is designed so that operations to prevent the load from collapsing can be performed using signals.
第１図に示すように、車体１には走行輪２が取
付けてあると共に、前部にはマスト３が取付けて
あり、このマスト３に沿つて昇降体４が上下動自
在荷装着され、この昇降体４にはフオーク爪５が
前方に向けて取着してあると共に、フオーク爪５
の上部にはブラケツト６が前方に向けて取付けら
れ、このブラケツト６には光センサ７が前後方向
に向けて間隔を置いて複数設けてあり、この光セ
ンサ７はフオーク爪５に向けて下向きとなつてパ
レツト８上の荷物９と対向すると検知信号を出力
するようにしてあると共に、車体１には走行距離
検出器、例えば走行輪２の回転数を検出するパル
スエンコーダ１０が取付けられている。
As shown in Fig. 1, running wheels 2 are attached to a vehicle body 1, and a mast 3 is attached to the front part of the vehicle body 1.A lifting body 4 is attached with a vertically movable load along this mast 3. A fork claw 5 is attached to the elevating body 4 facing forward, and the fork claw 5
A bracket 6 is attached to the upper part of the fork claw 5 facing forward, and a plurality of optical sensors 7 are provided on the bracket 6 at intervals in the front-rear direction. A detection signal is output when the vehicle comes face to face with a load 9 on a pallet 8, and a travel distance detector, for example, a pulse encoder 10 for detecting the number of revolutions of the running wheels 2, is attached to the vehicle body 1.
そして、第２図に示すように光センサ７の検知
信号とパルスエンコーダ１０のパルス信号はコン
トローラ１１に出力され、光センサ７の検知信号
により第３図に示すようにフオーク爪５のパレツ
ト８に対する移動距離Al，Bl，Cl，Dlを検知す
ると共に、パルス信号により車体１の後退走行距
離Ｌを演算し、この後退走行距離Ｌが移動距離
Al，Bl，Cl，Dlより大きくなつた時に異常と判
断して車体停止信号Ｒを出力して、例えばエンジ
ン１２を停止して車体１を停止する。 Then, as shown in FIG. 2, the detection signal of the optical sensor 7 and the pulse signal of the pulse encoder 10 are output to the controller 11, and the detection signal of the optical sensor 7 causes the fork claw 5 to respond to the pallet 8 as shown in FIG. In addition to detecting the moving distances Al, Bl, Cl, and Dl, the backward moving distance L of the vehicle body 1 is calculated using pulse signals, and this backward moving distance L is the moving distance.
When it becomes larger than Al, Bl, Cl, and Dl, it is determined that there is an abnormality, and a vehicle body stop signal R is output to stop the engine 12 and the vehicle body 1, for example.
しかして、第４図に示すようパレツト８を他の
荷物９上に載置した後に車体１を後退させてフオ
ーク爪５をパレツト８より引き抜く際に、走行路
１３の凹凸やパレツトサイズのバラツキ又は昇降
体４の昇降制御上の誤差等の影響によりフオーク
爪５がパレツト８に接触すると、第５図に示すよ
うにパレツト８がフオーク爪５とともに引きずら
れて荷物９がずれて他の荷物がくずれることがあ
る。 As shown in FIG. 4, when the pallet 8 is placed on another load 9 and the vehicle body 1 is moved backwards to pull out the fork claw 5 from the pallet 8, unevenness of the traveling path 13, variations in the pallet size, or lifting/lowering may occur. If the fork claw 5 comes into contact with the pallet 8 due to an error in the lifting/lowering control of the body 4, the pallet 8 will be dragged along with the fork claw 5, causing the cargo 9 to shift and other cargo to crumble, as shown in FIG. There is.
この時、車体１の後退走行距離L1となつても
第２番目の光センサ７が荷物９と対向して検知信
号を出力するので、フオーク爪５のパレツト８に
対する移動距離はAlとなり、Al＜L1であるから
異常と判断しコントローラ１１より車体停止信号
Ｒをお出力して車体１を緊張停止して荷くずれを
未然に防止する。 At this time, even if the backward traveling distance of the vehicle body 1 reaches L 1 , the second optical sensor 7 faces the cargo 9 and outputs a detection signal, so the moving distance of the fork claw 5 with respect to the pallet 8 becomes Al, and Al Since <L 1 , it is determined that there is an abnormality, and the controller 11 outputs a car body stop signal R to bring the car body 1 to a tension stop and prevent the load from collapsing.
フオーク爪５とパレツト８が接触して車体１を
後退してフオーク爪５をパレツト８より抜き出す
際にフオーク爪５とともにパレツト８が移動する
と、車体後退距離がフオーク爪５のパレツト８に
対する移動量よりも大きくなつて信号を出力する
ので、その信号によつて荷くずれを防止する操作
を行なうことができる。
If the pallet 8 moves together with the fork claws 5 when the fork claws 5 and the pallet 8 come into contact and the vehicle body 1 is moved backward to extract the fork claws 5 from the pallet 8, the vehicle body retraction distance will be greater than the amount of movement of the fork claws 5 relative to the pallet 8. Since the load becomes larger and a signal is output, the signal can be used to perform an operation to prevent the load from collapsing.
したがつて、接触式スイツチを設けることなし
に荷くずれを防止できるから、誤操作することな
しに確実に荷くずれを防止できる。 Therefore, since it is possible to prevent the load from collapsing without providing a contact type switch, it is possible to reliably prevent the load from collapsing without erroneous operation.
第１図〜第５図は本考案の実施例を示し、第１
図は正面図、第２図は回路図、第３図は光センサ
の取付部説明図、第４図、第５図は動作説明図、
第６図は従来例の説明図である。
１は車体、３はマスト、５はフオーク爪、８は
パレツト。
1 to 5 show embodiments of the present invention.
The figure is a front view, Figure 2 is a circuit diagram, Figure 3 is an illustration of the mounting part of the optical sensor, Figures 4 and 5 are illustrations of operation,
FIG. 6 is an explanatory diagram of a conventional example. 1 is the car body, 3 is the mast, 5 is the fork claw, and 8 is the pallet.
Claims (1)
動自在に設けた荷役車両において、車体１の走行
距離を検出する手段と、フオーク爪５のパレツト
８に対する移動量を検出する手段と、車体１の後
退走行距離がフオーク爪５のパレツト８に対する
移動量よりも大きい時に信号を出力させる手段と
より構成したことを特徴とする荷役車両の荷くず
れ防止装置。 In a cargo handling vehicle in which a fork pawl 5 is provided vertically movably along a mast 3 of a car body 1, means for detecting the travel distance of the car body 1, means for detecting the amount of movement of the fork pawl 5 with respect to a pallet 8, and a means for detecting the travel distance of the car body 1, 1. A cargo shifting prevention device for a cargo handling vehicle, comprising means for outputting a signal when the backward traveling distance of the fork claw 5 is greater than the amount of movement of the fork claw 5 relative to the pallet 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13618287U JPH0543036Y2 (en) | 1987-09-08 | 1987-09-08 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13618287U JPH0543036Y2 (en) | 1987-09-08 | 1987-09-08 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6443098U JPS6443098U (en) | 1989-03-15 |
| JPH0543036Y2 true JPH0543036Y2 (en) | 1993-10-28 |
Family
ID=31396450
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13618287U Expired - Lifetime JPH0543036Y2 (en) | 1987-09-08 | 1987-09-08 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0543036Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6599810B2 (en) * | 2016-03-29 | 2019-10-30 | 住友ナコ フォ−クリフト株式会社 | Cargo work vehicle |
-
1987
- 1987-09-08 JP JP13618287U patent/JPH0543036Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6443098U (en) | 1989-03-15 |
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