JPH0699865A - Hand lift truck - Google Patents

Hand lift truck

Info

Publication number
JPH0699865A
JPH0699865A JP4275500A JP27550092A JPH0699865A JP H0699865 A JPH0699865 A JP H0699865A JP 4275500 A JP4275500 A JP 4275500A JP 27550092 A JP27550092 A JP 27550092A JP H0699865 A JPH0699865 A JP H0699865A
Authority
JP
Japan
Prior art keywords
unit frame
ram cylinder
rear wheel
hydraulic base
wheel
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.)
Granted
Application number
JP4275500A
Other languages
Japanese (ja)
Other versions
JPH089332B2 (en
Inventor
Kenichi Nakade
出 健 市 中
Kikuo Nitta
田 喜 久 男 新
Tomomasa Hirao
尾 友 正 平
Shoichi Nakagawa
川 正 一 中
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Okudaya Giken KK
Original Assignee
Okudaya Giken KK
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Okudaya Giken KK filed Critical Okudaya Giken KK
Priority to JP4275500A priority Critical patent/JPH089332B2/en
Publication of JPH0699865A publication Critical patent/JPH0699865A/en
Publication of JPH089332B2 publication Critical patent/JPH089332B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Handcart (AREA)
  • Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)

Abstract

PURPOSE:To provide a hand lift truck of such structure that driving wheels can be mounted thereto by simple machining such as welding, the fitting height of a ram cylinder can be lowered, and the driving rear wheel are kept grounded being elevated following the inclination or unevenness of the road surface so as to be prevented from slipping while being reduced in the manufacturing cost and the like by the combined use of manual propulsion structure and also by four-wheel structure. CONSTITUTION:In this hand lift truck, a unit frame 15 is provided with a driving rear wheel 19 rotated by an electric motor 18 and a rotatable idling rear wheel 17. An axle frame 20 is journalled to the unit frame 15 in such a way as to be rotatable around a vertical axis, and the axle frame 20 is connected to a hydraulic base 5 through a steering link 25. The unit frame 15 is fitted in the rollable state to the table 10 through a fulcrum shaft 10b.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は荷物を載せるパレットな
どを持上げて搬送するハンドリフトトラックに関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hand lift truck that lifts and conveys a pallet or the like on which luggage is placed.

【0002】[0002]

【従来の技術】従来、電動モータによって回転させる駆
動後輪を備えた自走構造のものがあった。
2. Description of the Related Art Conventionally, there has been a self-propelled structure having driving rear wheels rotated by an electric motor.

【0003】[0003]

【発明が解決しようとする課題】前記従来技術は、荷物
載せ台を支えるラムシリンダの下側に駆動後輪を配設さ
せていたから、ラムシリンダ下部両側に一対の後輪を回
転自在に設ける手動推進構造のものに比べ、ラムシリン
ダの取付け位置が高くなり、左右転倒を防ぐ一対の補助
輪を備えた5輪構造にする必要があり、また手動推進構
造のラムシリンダなどを容易に兼用し得ず、ラムシリン
ダ部の小型化並びに製造コストの低減などを容易に図り
得ない等の問題があった。
In the above-mentioned prior art, since the drive rear wheels are arranged below the ram cylinder that supports the luggage carrier, a pair of rear wheels are rotatably provided on both lower sides of the ram cylinder for manual propulsion. Compared to the structure, the mounting position of the ram cylinder is higher and it is necessary to have a five-wheel structure with a pair of auxiliary wheels that prevent tipping over from side to side, and a ram cylinder with a manual propulsion structure cannot be used easily. However, there is a problem in that it is not possible to easily reduce the size of the ram cylinder portion and reduce the manufacturing cost.

【0004】[0004]

【課題を解決するための手段】然るに、本発明は、荷物
載せ台を支えるラムシリンダを立設させ、該ラムシリン
ダ中間部に油圧ベースを一体固定させ、油圧ベース上側
にプランジャポンプ及び操作ハンドル及び油タンクを設
けると共に、前記油圧ベース下面側のラムシリンダにテ
ーブルを水平回転自在に設け、荷物載せ台前部の前輪を
下方に出入させるアームを前記テーブルに連結させるハ
ンドリフトトラックにおいて、電動モータによって回転
させる駆動後輪並びに回転自在な遊転後輪を設ける走行
ユニットフレームを備え、前記駆動後輪を取付ける車軸
フレームを垂直軸芯回りに回転自在にユニットフレーム
に軸支させ、前記車軸フレームを油圧ベースに操向リン
クを介して連結させると共に、前記テーブルに支点軸を
介して前記ユニットフレームをローリング自在に取付け
たもので、従来の手動推進構造のラムシリンダ及び油圧
ベースなどを兼用し、ユニットフレームの熔接など簡単
な加工で駆動車輪を装設し得、従来の電動推進構造に比
べてラムシリンダ取付け高さを低くし得ると共に、手動
推進構造の兼用並びに4輪構造によって製造コストの低
減などを容易に図り得ると共に、前記ユニットフレーム
が支点軸を中心にローリングするから、路面の傾斜また
は凹凸に追従して駆動後輪を昇降させ得、駆動後輪を接
地維持して該後輪の空転(スリップ)を容易に防止し得
るものである。
SUMMARY OF THE INVENTION However, according to the present invention, a ram cylinder for supporting a luggage platform is erected, a hydraulic base is integrally fixed to an intermediate portion of the ram cylinder, and a plunger pump, an operating handle, and an upper side of the hydraulic base are provided. In a hand lift truck in which an oil tank is provided, a table is horizontally rotatably provided on the ram cylinder on the lower surface side of the hydraulic base, and an arm for moving the front wheel of the front of the luggage platform downward is connected to the table by an electric motor. A driving unit frame provided with a driving rear wheel to be rotated and a freely rotating rear wheel is provided, and an axle frame on which the driving rear wheel is mounted is rotatably supported on the unit frame about a vertical axis, and the axle frame is hydraulically operated. It is connected to the base via a steering link and is connected to the table via a fulcrum shaft. The frame is mounted so that it can be rolled freely, and it also serves as the ram cylinder and hydraulic base of the conventional manual propulsion structure, and drive wheels can be installed by simple processing such as welding of the unit frame, compared to the conventional electric propulsion structure. The mounting height of the ram cylinder can be reduced, and the manual propulsion structure can be combined with the four-wheel structure to easily reduce the manufacturing cost. Further, since the unit frame rolls around the fulcrum shaft, the inclination of the road surface can be reduced. Alternatively, the driven rear wheel can be moved up and down by following the unevenness, and the driven rear wheel can be kept on the ground to easily prevent the rear wheel from slipping (slip).

【0005】[0005]

【実施例】以下、本発明の実施例を図面に基づいて詳述
する。図1はラムシリンダ部の側面図、図2は全体の斜
視図、図3は同平面図であり、パレットなどを載せるフ
ォーク形の荷物載せ台(1)を備え、下方に出入自在な
前輪(2)(2)を前記台(1)前端部に取付けると共
に、前記台(1)後側の山形部(3)を支えるラムシリ
ンダ(4)を立設させ、該ラムシリンダ(4)中間に油
圧ベース(5)を略水平に一体固定させ、前記ラムシリ
ンダ(4)を駆動するプランジャポンプ(6)と、油タ
ンク(7)と、ポンピング及び操向用の操作ハンドル
(8)を、前記油圧ベース(5)上側に設けるもので、
前記油圧ベース(5)下面側のラムシリンダ(4)にベ
アリング(9)を介してテーブル(10)を水平回転自
在に設け、荷物載せ台(1)下方に前輪(2)を出入さ
せるL形アーム(11)の一端を前記テーブル(10)
に連結させ、前記ハンドル(8)のポンピングによって
プランジャポンプ(6)を作動させ、タンク(7)の油
をラムシリンダ(4)に送給し、ラムピストン(12)
を上昇させて山形部(3)を持上げ、また前記アーム
(11)及びロッド(13)を介して前輪(2)を下方
に突出させ、荷物載せ台(1)を上昇させる一方、前記
ハンドル(8)の圧抜レバー(14)操作によってラム
シリンダ(4)の油をタンク(7)に戻し、荷物載せ台
(1)を下降させるように構成している。
Embodiments of the present invention will now be described in detail with reference to the drawings. FIG. 1 is a side view of the ram cylinder part, FIG. 2 is a perspective view of the whole, and FIG. 3 is a plan view of the ram cylinder part. 2) The (2) (2) is attached to the front end of the platform (1), and a ram cylinder (4) that supports the chevron (3) on the rear side of the platform (1) is erected upright in the middle of the ram cylinder (4). The hydraulic base (5) is integrally fixed substantially horizontally, and the plunger pump (6) for driving the ram cylinder (4), the oil tank (7), and the operation handle (8) for pumping and steering are provided as described above. It is provided on the upper side of the hydraulic base (5),
A table (10) is horizontally rotatably mounted on a ram cylinder (4) on the lower surface side of the hydraulic base (5) through a bearing (9) to allow the front wheel (2) to move in and out below the luggage carrier (1). One end of the arm (11) is attached to the table (10).
, The plunger pump (6) is operated by pumping the handle (8), and the oil in the tank (7) is fed to the ram cylinder (4), and the ram piston (12).
To lift up the chevron (3), and the front wheel (2) is projected downward via the arm (11) and the rod (13) to raise the luggage carrier (1) while the handle ( By operating the pressure release lever (14) of 8), the oil of the ram cylinder (4) is returned to the tank (7), and the luggage carrier (1) is lowered.

【0006】また、図4にも示す如く、前記テーブル
(10)に取付ける走行ユニットフレーム(15)を備
えるもので、ラムシリンダ(4)下端部を挿通させて軸
(4a)によって係止する筒体(10a)上端側をテー
ブル(10)下面に熔接固定させ、前記筒体(10a)
に支点軸(10b)を突設させると共に、支点軸(10
b)を回転自在に挿通させる受筒(15a)を前記ユニ
ットフレーム(15)に一体固定させ、テーブル(1
0)に支点軸(10b)を介してユニットフレーム(1
5)をストッパ(10c)(10c)で規制する範囲内
でローリング自在に取付けている。そして、ブレーキペ
ダル(16)を備えた方向転換自在な遊転後輪(17)
を前記ユニットフレーム(15)一側に取付けると共
に、電動モータ(18)によって回転させる駆動後輪
(19)を、ユニットフレーム(15)他側に垂直軸芯
回りに回転自在な車軸フレーム(20)を介して方向転
換自在に取付け、前記油圧ベース(5)のブラケット
(21)と車軸フレーム(20)のブラケット(22)
にピン(23)(24)を介して操向リンク(25)両
端を連結させ、車軸フレーム(20)を油圧ベース
(5)に操向リンク(25)を介して連結させるもの
で、車軸フレーム(20)に設けた後輪(19)の操向
軸芯回りのストッパ(26a)、またはブラケット(2
1)の水平回転を規制するストッパ(26b)(26
b)の範囲内で、前記ハンドル(8)の操向操作によ
り、油圧ベース(5)、ブラケット(21)、操向リン
ク(25)、ブラケット(22)、車軸フレーム(2
0)を介して駆動後輪(19)を方向転換させるように
構成している。
Further, as shown in FIG. 4, a traveling unit frame (15) attached to the table (10) is provided, and a cylinder which allows the lower end of the ram cylinder (4) to be inserted and which is locked by the shaft (4a). The upper end of the body (10a) is welded and fixed to the lower surface of the table (10), and the tubular body (10a)
A fulcrum shaft (10b) is projected on the
The receiving cylinder (15a) through which the b) is rotatably inserted is integrally fixed to the unit frame (15), and the table (1
0) through the fulcrum shaft (10b) to the unit frame (1
5) is mounted so that it can be rolled freely within the range restricted by the stoppers (10c) (10c). Then, the direction-changing idle rear wheel (17) provided with the brake pedal (16)
Is attached to one side of the unit frame (15), and a drive rear wheel (19) rotated by an electric motor (18) is rotatable around a vertical axis center on the other side of the unit frame (15). A bracket (21) of the hydraulic base (5) and a bracket (22) of the axle frame (20) are mounted so that the direction can be freely changed.
The steering shaft (25) is connected to the hydraulic base (5) via the steering link (25) by connecting both ends of the steering link (25) to the shaft via the pins (23) and (24). A stopper (26a) around the steering axis of the rear wheel (19) provided on (20) or a bracket (2
Stoppers (26b) (26) that restrict the horizontal rotation of 1)
Within the range of b), the hydraulic base (5), the bracket (21), the steering link (25), the bracket (22), the axle frame (2) are operated by the steering operation of the handle (8).
It is configured to change the direction of the rear drive wheel (19) via 0).

【0007】さらに、図5にも示す如く、前記荷物載せ
台(1)の山形部(3)に電装品ケース(27)をビス
止め固定させ、着脱自在な後面板(28)と開閉自在な
上蓋(29)によってケース(27)を密閉四角箱形に
構成し、バッテリ(30)及び充電器(31)をケース
(27)内部の棚(32)に収納させると共に、バッテ
リメータ(33)、キースイッチ(34)、及び電気制
御回路基板(35)をユニットパネル(36)に固設さ
せ、後面板(28)に取付孔(37)を介して前記パネ
ル(36)を着脱自在に固定させている。
Further, as shown in FIG. 5, the electrical equipment case (27) is fixed by screws to the chevron portion (3) of the luggage carrier (1), and the detachable rear face plate (28) can be opened and closed. The case (27) is formed in a closed rectangular box shape by the upper lid (29), the battery (30) and the charger (31) are housed in the shelf (32) inside the case (27), and the battery meter (33), The key switch (34) and the electric control circuit board (35) are fixed to the unit panel (36), and the panel (36) is detachably fixed to the rear face plate (28) through the mounting hole (37). ing.

【0008】さらに、図6に示す如く、前記操作ハンド
ル(8)に取付ける前進及び後進及びホーンの各スイッ
チ(38)(39)(40)を備え、前進スイッチ(3
8)に前進リレー(41)を、後進スイッチ(39)に
後進リレー(42)を、ホーンスイッチ(40)にホー
ン(43)を夫々接続させ、前進リレー(41)の常開
スイッチ(44)と後進リレー(42)の常閉スイッチ
(45)を介して前記電動モータ(18)を前進回転さ
せる一方、後進リレー(42)の常開スイッチ(46)
と前進リレー(41)の常閉スイッチ(47)を介して
前記電動モータ(18)を後進回転させるもので、前後
進スイッチ(38)(39)に速度切換スイッチ(4
8)を介して速度切換タイマリレー(49)を接続さ
せ、前記電動モータ(18)の一極側に設ける低速回転
用抵抗(50)に前記タイマリレー(49)のタイマス
イッチ(51)を並列接続させ、前後進スイッチ(3
8)(39)操作時、タイマスイッチ(51)がオンに
なるまでの所定時間だけ抵抗(50)を介して電動モー
タ(18)を低速回転させ、所定時間が経過したときに
タイマスイッチ(51)がオンになって電動モータ(1
8)を高速で定速回転させ、走行開始時に一定時間だけ
低速走行させて駆動後輪(19)のダッシュによる蛇行
を防ぐと共に、前後進スイッチ(38)(39)のオフ
によって各常閉スイッチ(45)(47)を介して電動
モータ(18)両極を短絡させ、該モータ(18)が慣
性回転時に発電してブレーキ力となって制動するように
構成している。
Further, as shown in FIG. 6, there are provided forward and reverse and horn switches (38) (39) (40) attached to the operation handle (8), and the forward switch (3)
The forward relay (41) is connected to 8), the reverse switch (39) is connected to the reverse relay (42), and the horn switch (40) is connected to the horn (43). The electric motor (18) is rotated forward through the normally closed switch (45) of the reverse relay (42), while the normally open switch (46) of the reverse relay (42) is rotated.
And the forward relay (41) normally closed switch (47) to rotate the electric motor (18) in the reverse direction. The forward and backward switches (38) (39) are connected to the speed changeover switch (4).
8), a speed switching timer relay (49) is connected, and a timer switch (51) of the timer relay (49) is connected in parallel to a low speed rotation resistor (50) provided on one pole side of the electric motor (18). Connect the forward / reverse switch (3
8) During operation of (39), the electric motor (18) is rotated at a low speed through the resistor (50) for a predetermined time until the timer switch (51) is turned on, and when the predetermined time has elapsed, the timer switch (51) ) Is turned on and the electric motor (1
8) Rotate at a high speed at a constant speed and run at a low speed for a fixed time at the start of running to prevent meandering due to the dash of the driving rear wheel (19), and turn off the forward / reverse switches (38) (39) to switch each normally closed switch. Both poles of the electric motor (18) are short-circuited via (45) and (47) so that the motor (18) generates electric power during inertial rotation to provide braking force for braking.

【0009】而して、図1乃至図4から明らかなよう
に、手動推進構造の荷物載せ台(1)及びラムシリンダ
(4)及び油圧ベース(5)及びテーブル(10)など
を利用し、荷物載せ台(1)の山形部(3)に電装品ケ
ース(27)を取付け、また前記各スイッチ(38)
(39)(40)を有する操作ハンドル(8)を取付け
ると共に、テーブル(10)の支点軸(10b)に走行
ユニットフレーム(15)をローリング自在に取付け、
油圧ベース(5)にブラケット(21)を熔接固定さ
せ、各後輪(17)(19)を前記ユニットフレーム
(15)に取付け、左右の前輪(2)(2)と左右の後
輪(17)(19)の4輪によって荷物載せ台(1)を
支持するもので、ハンドル(8)の前後揺動によるプラ
ンジャポンプ(6)のポンピング操作並びに圧抜レバー
(14)操作によって荷物載せ台(1)を昇降させると
共に、ハンドル(8)の左右揺動によって操向リンク
(25)を介して駆動後輪(19)を方向転換させ、電
動モータ(18)によって後輪(19)を正逆転させて
前後進走行させ、路面が傾斜しているとき、または路面
に凹凸があるとき、支点軸(10b)を中心に前記ユニ
ットフレーム(15)をローリングさせ、駆動後輪(1
9)を昇降させて路面の傾斜または凹凸に追従させるも
のである。
As can be seen from FIGS. 1 to 4, the load platform (1) of manual propelling structure, the ram cylinder (4), the hydraulic base (5), the table (10), etc. are utilized. The electrical equipment case (27) is attached to the chevron portion (3) of the luggage carrier (1), and the switches (38) are also provided.
The operation handle (8) having (39) and (40) is mounted, and the traveling unit frame (15) is mounted on the fulcrum shaft (10b) of the table (10) so that it can be freely rolled.
The bracket (21) is welded and fixed to the hydraulic base (5), the rear wheels (17) and (19) are attached to the unit frame (15), the left and right front wheels (2) and (2) and the left and right rear wheels (17). ) (19) supports the luggage carrier (1) by four wheels, and the luggage carrier (1) is pumped by swinging the handle (8) back and forth and the luggage carrier (1) is operated by the pressure release lever (14). 1) Ascending / descending and swinging the handle (8) left and right to change the direction of the driving rear wheel (19) through the steering link (25), and the electric motor (18) reverses the rear wheel (19) in the forward and reverse directions. When the road surface is inclined or the road surface is uneven, the unit frame (15) is rolled around the fulcrum shaft (10b) to drive the rear wheels (1).
9) is moved up and down to follow the slope or unevenness of the road surface.

【0010】さらに、図7、図8は後輪をローリング自
在に設ける他の実施例を示すもので、図7は運搬車の斜
視図、図8は同背面図であり、前端部に一対の前輪(5
2)(52)を設けて後端部に手押ハンドル(53)を
立設させる手動推進構造の平板状の荷物載せ台(54)
を備え、上記実施例と同様のバッテリ(55)及び充電
器(56)及びユニットパネル(56a)を設ける電装
品ケース(57)を前記荷物載せ台(54)後側上面に
載置させる。また、上記実施例と同様に、荷物載せ台
(54)後面に支点軸(58)を突設させ、支点軸(5
8)を回転自在に挿通させる受筒(59)を走行ユニッ
トフレーム(60)に一体固定させ、荷物載せ台(5
4)に支点軸(58)を介してユニットフレーム(6
0)をストッパ(61)(61)で規制する範囲内でロ
ーリング自在に取付けると共に、方向転換自在な遊転後
輪(62)を前記ユニットフレーム(60)一側に取付
けると共に、電動モータ(63)によって回転させる駆
動後輪(64)を、ユニットフレーム(60)他側に垂
直軸芯回りに回転自在な車軸フレーム(65)を介して
方向転換自在に取付け、また前記車軸フレーム(65)
に手押ハンドル(66)を立設させ、前記モータ(6
3)を正逆転させる前後進スイッチ(67)(68)及
びホーンスイッチ(69)などをハンドル(66)に取
付けている。そして、ハンドル(66)の左右揺動によ
って駆動後輪(64)を方向転換させ、各スイッチ(6
7)(68)操作によって電動モータ(63)を作動さ
せ、後輪(64)を正逆転させて前後進走行させ、路面
が傾斜しているとき、または路面に凹凸があるとき、支
点軸(58)を中心に前記ユニットフレーム(60)を
ローリングさせ、駆動後輪(64)を昇降させて路面の
傾斜または凹凸に追従させるものである。
Further, FIGS. 7 and 8 show another embodiment in which the rear wheels are provided so that they can be freely rolled. FIG. 7 is a perspective view of the carrier, and FIG. 8 is a rear view of the same. Front wheel (5
2) A flat load carrying platform (54) of manual propulsion structure in which (52) is provided and a hand handle (53) is erected at the rear end.
An electric component case (57) having a battery (55), a charger (56), and a unit panel (56a) similar to those in the above-described embodiment is placed on the rear upper surface of the luggage mount (54). Further, similarly to the above-mentioned embodiment, a fulcrum shaft (58) is provided on the rear surface of the luggage carrier (54) so that the fulcrum shaft (5
8) is rotatably inserted into the receiving unit (59), which is integrally fixed to the traveling unit frame (60).
4) via the fulcrum shaft (58) to the unit frame (6
0) is mounted so that it can be rolled freely within the range regulated by the stoppers (61) (61), and a free-rotating rear wheel (62) which can be turned around is mounted on one side of the unit frame (60) and an electric motor (63). ), The drive rear wheel (64) is rotatably attached to the other side of the unit frame (60) through an axle frame (65) rotatable around a vertical axis, and the axle frame (65) is also provided.
The hand handle (66) is erected on the
Forward / reverse switches (67) (68) and horn switch (69) for reversing 3) are attached to the handle (66). Then, the drive rear wheel (64) is turned by swinging the handle (66) left and right, and the switches (6
7) When the electric motor (63) is operated by the operation (68) and the rear wheel (64) is rotated forward and backward to travel forward and backward, when the road surface is inclined or the road surface is uneven, the fulcrum shaft ( The unit frame (60) is rolled around 58) and the driving rear wheel (64) is moved up and down to follow the inclination or unevenness of the road surface.

【0011】さらに、図9は図7の変形例を示すもの
で、手押ハンドル(66)に前後進スイッチ(68)
(69)を取付け、また方向転換自在な左右一対の遊転
後輪(70)を荷物載せ台(54)後側下面に取付ける
と共に、荷物載せ台(54)下面のブラケット(71)
にピッチング支点軸(72)を介して受筒(73)を設
け、ストッパ(74)(75)によって規制する範囲内
で回転自在にローリング支点軸(76)を受筒(73)
に挿通させ、電動モータ(63)及び駆動輪(77)を
有する車軸フレーム(65)をローリング支点軸(7
6)に固定させ、荷物載せ台(54)の下面略中央で駆
動輪(77)を接地させるもので、車軸フレーム(6
5)にアーム(78)を介してウエイト(79)を固設
させ、ピッチング支点軸(72)と駆動輪(77)接地
位置との間隔(A)よりも距離(B)だけさらに離して
ウエイト(79)を配設し、テコ作用によってウエイト
(79)重量を増幅させた圧力で駆動輪(77)を接地
させ、また各支点軸(72)(76)を中心に駆動輪
(77)をピッチング及びローリングさせて路面に追従
させるものである。
Further, FIG. 9 shows a modification of FIG. 7, in which the forward / reverse switch (68) is attached to the hand handle (66).
(69) is attached, and a pair of left and right free-moving rear wheels (70) which can change direction are attached to the lower surface of the rear side of the luggage carrier (54) and the bracket (71) on the lower surface of the luggage carrier (54).
Is provided with a receiving cylinder (73) via a pitching fulcrum shaft (72), and the rolling fulcrum shaft (76) is rotatably received within a range regulated by stoppers (74) (75).
The axle frame (65) having the electric motor (63) and the drive wheel (77), and the rolling fulcrum shaft (7).
6), and the drive wheel (77) is grounded at approximately the center of the lower surface of the luggage carrier (54).
The weight (79) is fixed to the arm (5) via the arm (78), and the weight (B) is further separated from the distance (A) between the pitching fulcrum shaft (72) and the drive wheel (77) ground contact position. (79) is provided, the weight of the weight (79) is amplified by the lever action, and the drive wheel (77) is grounded by the pressure, and the drive wheel (77) is centered around each fulcrum shaft (72) (76). Pitching and rolling are made to follow the road surface.

【0012】さらに、図10は図9のウエイト(79)
に代えてガススプリング(80)を設けるもので、荷物
載せ台(54)下面側に略平行にガススプリング(8
0)を横架させ、荷物載せ台(54)下面のブラケット
(81)にガススプリング(80)の一端を連結させ、
車軸フレーム(65)のアーム(78)にリンク(8
2)を介してガススプリング(80)の他端を連結さ
せ、テコ作用によって増幅させたガススプリング(8
0)のバネ力により駆動輪(77)を接地させるもので
ある。なお、前記リンク(82)の軸支、並びにアーム
(78)とリンク(82)の連結は、支点軸(76)を
中心に駆動輪(77)がローリングするように、球関継
手などを用いて構成している。
Further, FIG. 10 shows the weight (79) of FIG.
Instead of the gas spring (80), the gas spring (8) is provided substantially parallel to the lower surface side of the luggage carrier (54).
0) is laid horizontally, and one end of the gas spring (80) is connected to the bracket (81) on the lower surface of the luggage carrier (54),
Link (8) to the arm (78) of the axle frame (65)
The other end of the gas spring (80) is connected via (2), and the gas spring (8) amplified by lever action is used.
The drive wheel (77) is grounded by the spring force of (0). In addition, the shaft support of the link (82) and the connection between the arm (78) and the link (82) use a ball bearing joint or the like so that the drive wheel (77) rolls around the fulcrum shaft (76). Are configured.

【0013】[0013]

【発明の効果】以上実施例から明らかなように本発明
は、荷物載せ台(1)を支えるラムシリンダ(4)を立
設させ、該ラムシリンダ(4)中間部に油圧ベース
(5)を一体固定させ、油圧ベース(5)上側にプラン
ジャポンプ(6)及び操作ハンドル(8)及び油タンク
(7)を設けると共に、前記油圧ベース(5)下面側の
ラムシリンダ(4)にテーブル(10)を水平回転自在
に設け、荷物載せ台(1)前部の前輪(2)を下方に出
入させるアーム(11)を前記テーブル(10)に連結
させるハンドリフトトラックにおいて、電動モータ(1
8)によって回転させる駆動後輪(19)並びに回転自
在な遊転後輪(17)を設ける走行ユニットフレーム
(15)を備え、前記駆動後輪(19)を取付ける車軸
フレーム(20)を垂直軸芯回りに回転自在にユニット
フレーム(15)に軸支させ、前記車軸フレーム(2
0)を油圧ベース(5)に操向リンク(25)を介して
連結させると共に、前記テーブル(10)に支点軸(1
0b)を介して前記ユニットフレーム(15)をローリ
ング自在に取付けたもので、従来の手動推進構造のラム
シリンダ(4)及び油圧ベース(5)などを兼用し、ユ
ニットフレーム(15)の熔接など簡単な加工で駆動車
輪(19)を装設でき、従来の電動推進構造に比べてラ
ムシリンダ(4)取付け高さを低くすることができると
共に、手動推進構造の兼用並びに4輪構造によって製造
コストの低減などを容易に図ることができると共に、前
記ユニットフレーム(15)が支点軸(10b)を中心
にローリングするから、路面の傾斜または凹凸に追従し
て駆動後輪(19)を昇降させることができ、駆動後輪
(19)を接地維持して該後輪(19)の空転(スリッ
プ)を容易に防止できるものである。
As is apparent from the above embodiments, according to the present invention, the ram cylinder (4) for supporting the luggage carrier (1) is erected, and the hydraulic base (5) is provided in the middle portion of the ram cylinder (4). It is integrally fixed, and a plunger pump (6), an operating handle (8) and an oil tank (7) are provided on the upper side of the hydraulic base (5), and the table (10) is attached to the ram cylinder (4) on the lower surface side of the hydraulic base (5). ) Is rotatably rotatable, and an arm (11) for connecting the front wheel (2) at the front of the luggage carrier (1) downwards is connected to the table (10).
8) A drive unit wheel (15) provided with a drive rear wheel (19) rotated by means of 8) and a freely rotatable rear wheel (17) is provided, and an axle frame (20) for mounting the drive rear wheel (19) is attached to a vertical shaft. The unit frame (15) is rotatably supported around the core to support the axle frame (2).
0) is connected to the hydraulic base (5) via a steering link (25), and the fulcrum shaft (1) is attached to the table (10).
0b), the unit frame (15) is mounted so that it can be freely rolled, and also serves as the ram cylinder (4) and hydraulic base (5) of the conventional manual propulsion structure, for welding the unit frame (15), etc. The drive wheel (19) can be installed by simple processing, the mounting height of the ram cylinder (4) can be made lower than that of the conventional electric propulsion structure, and the manufacturing cost can be reduced by the combined use of the manual propulsion structure and the four-wheel structure. The unit frame (15) rolls around the fulcrum shaft (10b), so that the rear drive wheel (19) can be moved up and down by following the inclination or unevenness of the road surface. Therefore, the driven rear wheel (19) can be maintained on the ground and the slipping of the rear wheel (19) can be easily prevented.

【図面の簡単な説明】[Brief description of drawings]

【図1】ラムシリンダ部の側面図。FIG. 1 is a side view of a ram cylinder section.

【図2】全体の斜視図。FIG. 2 is an overall perspective view.

【図3】同平面図。FIG. 3 is a plan view of the same.

【図4】図1の背面図。FIG. 4 is a rear view of FIG.

【図5】電装品ケース部の分解図。FIG. 5 is an exploded view of an electric component case portion.

【図6】電動モータの制御回路図。FIG. 6 is a control circuit diagram of the electric motor.

【図7】他の実施例を示す運搬車の斜視図。FIG. 7 is a perspective view of a carrier showing another embodiment.

【図8】同背面図。FIG. 8 is a rear view of the same.

【図9】図7の変形例を示す側面図。9 is a side view showing a modified example of FIG. 7. FIG.

【図10】図9の変形例を示す側面図。FIG. 10 is a side view showing a modified example of FIG.

【符号の説明】[Explanation of symbols]

(1) 荷物載せ台 (2) 前輪 (4) ラムシリンダ (5) 油圧ベース (6) プランジャポンプ (7) 油タンク (8) 操作ハンドル (10) テーブル (10b)支点軸 (11) アーム (15) 走行ユニットフレーム (17) 遊転後輪 (18) 電動モータ (19) 駆動後輪 (20) 車軸フレーム (25) 操向リンク (1) Luggage stand (2) Front wheel (4) Ram cylinder (5) Hydraulic base (6) Plunger pump (7) Oil tank (8) Operation handle (10) Table (10b) Support shaft (11) Arm (15) ) Travel unit frame (17) Idling rear wheel (18) Electric motor (19) Drive rear wheel (20) Axle frame (25) Steering link

───────────────────────────────────────────────────── フロントページの続き (72)発明者 中 川 正 一 大阪府南河内郡美原町丹上263番地 株式 会社をくだ屋技研内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Shoichi Nakagawa 263, Tanue, Mihara Town, Minamikawachi District, Osaka Prefecture

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 荷物載せ台を支えるラムシリンダを立設
させ、該ラムシリンダ中間部に油圧ベースを一体固定さ
せ、油圧ベース上側にプランジャポンプ及び操作ハンド
ル及び油タンクを設けると共に、前記油圧ベース下面側
のラムシリンダにテーブルを水平回転自在に設け、荷物
載せ台前部の前輪を下方に出入させるアームを前記テー
ブルに連結させるハンドリフトトラックにおいて、電動
モータによって回転させる駆動後輪並びに回転自在な遊
転後輪を設ける走行ユニットフレームを備え、前記駆動
後輪を取付ける車軸フレームを垂直軸芯回りに回転自在
にユニットフレームに軸支させ、前記車軸フレームを油
圧ベースに操向リンクを介して連結させると共に、前記
テーブルに支点軸を介して前記ユニットフレームをロー
リング自在に取付けたことを特徴とするハンドリフトト
ラック。
1. A ram cylinder for supporting a luggage platform is erected, a hydraulic base is integrally fixed to an intermediate portion of the ram cylinder, a plunger pump, an operation handle and an oil tank are provided on an upper side of the hydraulic base, and a lower surface of the hydraulic base is provided. In a hand lift truck in which a table is horizontally rotatably mounted on the side ram cylinder, and an arm for moving the front wheel of the front part of the luggage platform downward is connected to the table, a drive rear wheel rotated by an electric motor and a rotatable idle wheel are used. The vehicle includes a traveling unit frame provided with rear wheels, and an axle frame to which the drive rear wheels are attached is rotatably supported on the unit frame about a vertical axis, and the axle frame is connected to a hydraulic base via a steering link. At the same time, the unit frame is mounted on the table via a fulcrum shaft so that it can be rolled freely. A hand lift truck characterized by that.
JP4275500A 1992-09-17 1992-09-17 Hand lift truck Expired - Fee Related JPH089332B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4275500A JPH089332B2 (en) 1992-09-17 1992-09-17 Hand lift truck

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4275500A JPH089332B2 (en) 1992-09-17 1992-09-17 Hand lift truck

Publications (2)

Publication Number Publication Date
JPH0699865A true JPH0699865A (en) 1994-04-12
JPH089332B2 JPH089332B2 (en) 1996-01-31

Family

ID=17556361

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4275500A Expired - Fee Related JPH089332B2 (en) 1992-09-17 1992-09-17 Hand lift truck

Country Status (1)

Country Link
JP (1) JPH089332B2 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09207784A (en) * 1996-02-01 1997-08-12 Okudaya Giken:Kk Cargo handling dolly
JP2009029418A (en) * 2007-07-27 2009-02-12 Linde Material Handling Gmbh Storage vehicle, in particular, pallet truck
CN108726445A (en) * 2018-07-17 2018-11-02 杭叉集团股份有限公司 A kind of easy electric pallet truck
CN110028023A (en) * 2019-05-17 2019-07-19 谢瑞同 A kind of electrocar and its working method
CN112373549A (en) * 2020-11-27 2021-02-19 象山永久电力设备机具有限公司 Transfer trolley convenient for production of energy-saving and environment-friendly electrical cabinets
CN114394557A (en) * 2021-12-31 2022-04-26 浙江西车智能物流装备有限责任公司 Electric carrying forklift

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6313060U (en) * 1986-07-14 1988-01-28

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6313060U (en) * 1986-07-14 1988-01-28

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09207784A (en) * 1996-02-01 1997-08-12 Okudaya Giken:Kk Cargo handling dolly
JP2009029418A (en) * 2007-07-27 2009-02-12 Linde Material Handling Gmbh Storage vehicle, in particular, pallet truck
CN108726445A (en) * 2018-07-17 2018-11-02 杭叉集团股份有限公司 A kind of easy electric pallet truck
CN108726445B (en) * 2018-07-17 2023-07-21 杭叉集团股份有限公司 Simple electric pallet truck
CN110028023A (en) * 2019-05-17 2019-07-19 谢瑞同 A kind of electrocar and its working method
CN112373549A (en) * 2020-11-27 2021-02-19 象山永久电力设备机具有限公司 Transfer trolley convenient for production of energy-saving and environment-friendly electrical cabinets
CN112373549B (en) * 2020-11-27 2021-12-14 象山永久电力设备机具有限公司 Transfer trolley convenient for production of energy-saving and environment-friendly electrical cabinets
CN114394557A (en) * 2021-12-31 2022-04-26 浙江西车智能物流装备有限责任公司 Electric carrying forklift

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