WO2014179973A1 - 一种轻小型工业车辆 - Google Patents

一种轻小型工业车辆 Download PDF

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Publication number
WO2014179973A1
WO2014179973A1 PCT/CN2013/075429 CN2013075429W WO2014179973A1 WO 2014179973 A1 WO2014179973 A1 WO 2014179973A1 CN 2013075429 W CN2013075429 W CN 2013075429W WO 2014179973 A1 WO2014179973 A1 WO 2014179973A1
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WO
WIPO (PCT)
Prior art keywords
pawl
ratchet
light
industrial vehicle
handle
Prior art date
Application number
PCT/CN2013/075429
Other languages
English (en)
French (fr)
Inventor
修特塞⋅巴斯蒂安⋅亚历山大
叶唯伟
周学军
Original Assignee
浙江诺力机械股份有限公司
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 浙江诺力机械股份有限公司 filed Critical 浙江诺力机械股份有限公司
Priority to EP13884215.8A priority Critical patent/EP2910461B1/en
Priority to PCT/CN2013/075429 priority patent/WO2014179973A1/zh
Publication of WO2014179973A1 publication Critical patent/WO2014179973A1/zh

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
    • B62B5/00—Accessories or details specially adapted for hand carts
    • B62B5/0026—Propulsion aids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
    • B62B3/00—Hand carts having more than one axis carrying transport wheels; Steering devices therefor; Equipment therefor
    • B62B3/04—Hand carts having more than one axis carrying transport wheels; Steering devices therefor; Equipment therefor involving means for grappling or securing in place objects to be carried; Loading or unloading equipment
    • B62B3/06—Hand carts having more than one axis carrying transport wheels; Steering devices therefor; Equipment therefor involving means for grappling or securing in place objects to be carried; Loading or unloading equipment for simply clearing the load from the ground
    • B62B3/0606—Hand carts having more than one axis carrying transport wheels; Steering devices therefor; Equipment therefor involving means for grappling or securing in place objects to be carried; Loading or unloading equipment for simply clearing the load from the ground manually operated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
    • B62B5/00—Accessories or details specially adapted for hand carts
    • B62B5/0026—Propulsion aids
    • B62B5/0059—Propulsion aids facilitating hand propulsion when motor fails
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
    • B62B5/00—Accessories or details specially adapted for hand carts
    • B62B5/06—Hand moving equipment, e.g. handle bars
    • B62B5/063—Hand moving equipment, e.g. handle bars for low-lift hand trucks

Definitions

  • the present invention relates to industrial equipment, and more particularly to a light and small industrial vehicle.
  • a prior art light-small industrial vehicle such as a manual crane truck disclosed in the application patent publication No. CN1 03038121A, and a manual hydraulic cylinder disclosed in the utility model patent No. CN2161 599Y.
  • a hand-held hydraulic truck disclosed in the Utility Model Patent No. CN202499688U which can only be driven by an operator. Therefore, when the load is heavy, the obstacle is too high. When you go uphill, it is more difficult to drag.
  • the above-mentioned truck such as a rudder stick cart device disclosed in the invention patent No. CN174501 1 B, which is provided with a force transmission device and converts the rudder bar up and down into a steering wheel a coupling for driving motion, the coupling is arranged to have two control positions, a completely uncoupled coupling position and a transmission position in which the two driving forces are reversed, and in the absence of the transmission of the rudder stock, the rudder stock is along The movement in a direction opposite to the direction in which the driving force transmits the steering direction is free, and the wheel is freely rotatable in the driving force transmission direction, and the coupler includes an inner cylindrical member having an outwardly cylindrical surface, the periphery of the surface having a flat An axial cutting portion in which rollers are provided in the roller cage; further comprising an outer cylindrical member having an inwardly cylindrical surface, and the roller cage driven in the first direction retains the roller,
  • a light and small industrial vehicle including a driving wheel, a handle, and a driving mechanism capable of converting the rotating motion of the handle into the rotating motion of the driving wheel
  • the driving The mechanism includes a ratchet having teeth and capable of rotating the drive wheel, a pawl engageable with the tooth, a pawl for mounting the pawl and capable of becoming the ratchet when the pawl is engaged with the tooth a pull plate of the follower object, a press bar for converting the turning action of the handle into a rotating action of the pull plate, and a trigger mechanism for controlling the pawl to disengage or engage the ratchet.
  • the ratchet is engaged with the pawl to convert the turning motion of the handle into the driving motion of the driving wheel, so that the operator can drag or push the truck more labor-savingly.
  • the trigger mechanism includes a positioning plate that is rotatably coupled to the pull plate by a rotating shaft, a positioning rod that can fix the gear block at a current rotational position, and can convert the rotating motion of the rotating shaft into a pressure block that disengages or engages between the pawl and the ratchet, and a foot pedal that is fixed relative to the positioning disk.
  • the invention patent of CN1745011B is a driving motion for converting the up and down reciprocating motion of the rudder stock into a steering wheel by hand operation to control the rollers in different positions, due to the operation.
  • the hand of the person also needs to operate the rudder stock at the same time and implement the dragging action. Therefore, the flexibility of the operation of the hand is higher, that is, the operation difficulty of the device is increased; however, the above solution of the present invention can be realized by the foot motion.
  • the engagement or disengagement between the pawl and the ratchet reduces the overall difficulty of operation.
  • the pawl has a rotational connection portion rotatably coupled to the pull plate and an engagement portion acting on the ratchet; the clamp has a trigger portion acting on the engagement portion; A connector is connected between the portion and the meshing portion.
  • the engaging portion is different from the rotating connecting portion, and the engaging portion is rotatable about the axis of the rotating connecting portion, so that when the engaging portion is engaged with the ratchet, if the handle is rotated along the engaging portion to the rotating connecting portion
  • the rotation of the handle does not drive the driving wheel to rotate; when the handle rotates in the direction of the rotating connection portion to the engaging portion, the rotation of the handle drives the driving wheel to rotate; thus, when the operator engages through the foot pedal After meshing with the ratchet, the operator can drive the carriage to move by continuously reciprocating the handle.
  • the movement of the truck is driven by the one-position positioning of the positioning disc, that is, the reciprocating rotation of the handle can be driven, thereby further reducing the operation difficulty.
  • the pawl and the ratchet are always engaged, the truck will not go backwards and slip when it passes over the obstacle, especially when going uphill, which improves the safety and makes the operator more labor-saving.
  • the pawl has a rotational connection portion rotatably coupled to the pull plate and an engagement portion located on both sides of the rotational connection portion for engaging the ratchet.
  • the trigger mechanism includes a positioning plate that is rotatably coupled to the pull plate by a rotating shaft and has three bayonet ports, is disposed on the pull plate and can be clamped to the corresponding bayonet to fix the positioning plate.
  • a positioning rod in a rotating position
  • a pressing block fixed to the rotating shaft and having a corresponding engaging portion respectively capable of engaging the same pawl to engage the corresponding engaging portion with the trigger portion of the ratchet, and being fixed relative to the positioning plate
  • the pedals is provided.
  • a connecting member is connected between the corresponding triggering portion and the engaging portion corresponding to the triggering portion.
  • the connector is preferably an elastic member such as a spring.
  • the engaging portions of the same pawl are axially offset;
  • the ratchets corresponding to the same pawl have two, and the two ratchets are axially side by side, and the two ratchets, one of the ratchets
  • the orientation of the teeth is opposite the orientation of the teeth of the other ratchet.
  • each of the engaging portions is provided with a rotating end portion for rotatably connecting the engaging portion to the pull plate; the rotating connecting portion is rotated by two of the same pawl End composition.
  • both ends of the pressing rod are rotatably coupled to the handle and the pull plate, respectively.
  • the light and small industrial vehicle further includes a base, the base is provided with a cylinder and an oil pump; the handle is disposed opposite to the cylinder and the handle acts on the oil pump to control the oil plug
  • the upper end of the piston rod of the cylinder is provided with a top plate, the top plate is fixedly connected with a frame movably connected to the base; the lower part of the frame is provided with a support wheel; and the axle below the base is fixedly fixed to the cylinder,
  • the driving wheel is located at two sides of the axle, and a ball bearing is disposed between the driving wheel and the axle; two opposite sides of the driving wheel are fixed with two axially side by side distributions and tooth orientation
  • the ratchets are opposite to each other; the two ratchets are respectively a ratchet wheel and a ratchet wheel; the axle is also sleeved with two of the pull plates; and the two axle plates are rotatably connected with a rotating shaft, the rotating shaft A positioning plate having three
  • each of the pull plates is coaxially rotatably coupled with an upper pawl and a lower pawl respectively corresponding to the ratchet wheel 1 and the ratchet wheel; a rotary connecting portion rotatably coupled to the pull plate and an engaging portion for engaging with the corresponding ratchet; both ends of the rotating shaft are respectively fixed with upper pressing corresponding to the upper pawl or the lower pawl a block and a lower pressing block; each of the pressing blocks has a triggering portion acting on the corresponding pawl; a connecting member is disposed between the corresponding triggering portion and the corresponding engaging portion; and the positioning plate is further fixed for the operator to rotate the positioning plate
  • the two steps of the pressing rod are respectively rotatably connected to the handle and the pulling plate.
  • the present invention has the following beneficial effects:
  • the present invention has a simple structure, and the ratchet is engaged with the pawl to realize the rotation action of the handle to the rotation of the driving wheel, which is beneficial to reduce the power during the motion conversion process. Loss; and the present invention can be continuously passed through a positioning of the positioning disk
  • the handle rotates back and forth to realize the continuous rotation of the driving wheel in the forward direction, thereby reducing the operation difficulty, and the positioning of the positioning plate can be realized by the foot portion, thereby further improving the convenience of operation, and also eliminating the need for the operator.
  • the handling is more labor-saving; and the utility model has no obstacles when passing obstacles, especially when going uphill, which improves the safety of the handling process.
  • Figure 1 is a schematic view showing the structure of Embodiment 1;
  • Figure 2 is a schematic view of the driving mechanism of the embodiment 1;
  • Figure 3 is a side view of the driving mechanism of Embodiment 1;
  • FIG. 4 is a schematic structural view of a positioning disk in Embodiment 1;
  • Fig. 5 is a schematic view showing the structure of the pull plate in the first embodiment.
  • a light and small industrial vehicle includes a base 4, and a base 4 is provided with a cylinder 41 and an oil pump 42; a handle 2 is end-joined to the cylinder 41, and a handle 2 is applied to the oil pump 42. Therefore, the cylinder 41 can be moved by the reciprocating rotation of the handle 2; the oil pump 42 further has a fork, and when the fork is in the corresponding position, the rotation of the handle 2 can activate the oil pump 42 when the fork is in another position.
  • the rotation of the handle 2 does not activate the oil pump 42, the fork is not shown in the figure; the piston rod of the cylinder 41
  • the top end of 411 is provided with a top plate 81, and the top plate 81 is fixedly connected with a frame 8 movably connected to the base 4; the lower part of the frame 8 is provided with a support wheel 82.
  • an axle 11 fixed to the oil cylinder 41.
  • the two sides of the axle 11 are respectively provided with a driving wheel 1, and a ball bearing 12 is disposed between the driving wheel 1 and the axle 1; the opposite side of the two driving wheels 1
  • the pull plate 33, the two pull plates 33 are respectively adjacent to the corresponding innermost ratchets; the two pull plates 33 are rotatably connected with a rotating shaft 3511, and the rotating shaft 3511 is fixed with a positioning plate 351 having three bayonet 3512;
  • Each of the sliding plates 33 is provided with a notch 331; between the two notches 331 is inserted with a positioning rod 352 that can be engaged with the
  • the elastic member 3521 can be a spring that can be displaced in the axial direction perpendicular to the rotating shaft 3511 to be engaged with the positioning rod 352 by the corresponding bayonet 3512 due to the contact force of the positioning disc 351.
  • each pull plate 33 The upper and lower pawls 321 and 322 respectively corresponding to the ratchet wheel 311 and the ratchet wheel 312 are coaxially coupled to each other; the upper and lower pawls both have a rotational end rotatably coupled to the pull plate and engage with the corresponding ratchet wheel.
  • each of the rotating ends can be regarded as the rotating connecting portion 3211, but since the rotating ends of the upper and lower pawls on the same side are coaxial, the rotating connecting portion 3211 can also be regarded as including two rotating ends on the same side; the rotating shaft 3511 An upper pressing block 3531 and a lower pressing block 3532 respectively corresponding to the upper pawl 321 or the lower pawl 322 are fixed at both ends; each of the pressing blocks has an axial direction displacement perpendicular to the rotating shaft 3511 due to the rotation of the rotating shaft 3511.
  • a triggering portion 35311 is applied to the corresponding pawl; a connecting member 355 is disposed between the corresponding triggering portion 35311 and the corresponding engaging portion 3212, and the connecting member 355 is preferably a spring; and the positioning plate 351 is also fixed to facilitate the operator to rotate the positioning plate 351.
  • a pedal 354; two ends of the pressing rod 34 are respectively rotatably connected to the handle 2 and the pulling plate 33; the positioning plate 351, the positioning rod 352, the pressing block and the foot pedal 354 constitute a trigger mechanism; the trigger mechanism and the ratchet wheel Pawl pull plate 33, constituting the drive lever mechanism 34 converts rotation movement of the handle to the drive wheel of the rotation movement.
  • Embodiment 2 The difference from Embodiment 1 is that the opposite sides of the two driving wheels 1 are only solid A ratchet is provided, the teeth of the ratchet are coincident or parallel to the line connecting the apex of the tooth and the center of the ratchet; the upper and lower pawls 321 and 322 of each of the pull plates 33 are engageable with the ratchet.
  • Embodiment 3 The difference from Embodiment 1 is that only one ratchet is fixed on the opposite side of the two driving wheels 1; each of the pulling plates 33 has only one pawl engageable with the ratchet.
  • the up and down rotation of the handle 2 can respectively realize the rotation of the driving wheel 1 in two directions; in the embodiment, the positioning disk
  • the bayonet 3512 for positioning the positioning rod 352 on the 351 requires only two, one for disengaging the ratchet and one for engaging the pawl to the ratchet.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Handcart (AREA)
  • Transmission Devices (AREA)

Abstract

本发明涉及工业设备，特别涉及一种轻小型工业车辆。本发明是通过以下技术方案得以实现的：一种轻小型工业车辆，包括驱动轮、手柄及能够将所述手柄转动动作转换为所述驱动轮转动动作的驱动机构，所述驱动机构包括具有齿且能够带动所述驱动轮转动的棘轮、能够啮合于所述齿的棘爪、用于安装所述棘爪且能够在所述棘爪与所述齿啮合时成为所述棘轮的随动对象的拉板、用于将所述手柄的转动动作转换为所述拉板的转动动作的压杆及用于控制所述棘爪与所述棘轮脱开或啮合的触发机构。本发明釆用棘轮与棘爪配合的方式，以实现将手柄的转动动作转换为驱动轮的转动动作，从而使操作者可以较为省力地拖动或推动搬运车。

Description

一种轻小型工业车辆
技术领域
本发明涉及工业设备， 特别涉及一种轻小型工业车辆。
背景技术
现有技术中轻小型工业车辆， 如申请公布号为 CN1 03038121A 的发明专利 申请所公开的一种手动起重搬运车， 又如授权公告号为 CN2161 599Y 的实用新 型专利所公开的一种手动液压搬运车， 又如授权公告号为 CN202499688U 的实 用新型专利所公开的一种手动液压搬运车， 上述搬运车只能靠操作者拖动搬运 车， 因此， 在载物较重的时候或是过障碍和上坡时， 拖动起来较为吃力。
为緩解上述不足， 针对上述搬运车提出了改进， 如授权公开号为 CN174501 1 B的发明专利所公开的一种舵杆手推车装置， 其设有力传送装置和将 舵杆上下往复运动转换为转向轮驱动运动的联结器， 联结器设置为具有二个控 制位置， 一个完全不受驱动的联结位置和两个驱动力反向的传送位置， 在没有 舵杆的力传送的情况下， 舵杆沿着与设定驱动力传送转向方向相反的方向的运 动是自由的， 并且车轮可沿着驱动力传送方向自由旋转， 联结器包括具有朝外 圓柱形表面的内圓柱形部件， 该表面的周边具有平的轴向切削处， 在这些切削 处、 滚柱保持架内设有滚柱； 还包括具有朝内圓柱形表面的外圓柱形部件， 而 且朝第一方向驱动的滚柱保持架保持滚柱， 使得当沿着一个方向运动时， 可使 这些滚柱楔进切削处和外圓柱形部件之间， 当朝相反的方向传送时， 滚柱保持 架沿相反的方向转动， 而当需要空档或空位位置时， 滚柱保持架则将滚柱保持 在不会发生楔进的中间位置。
然而， 此种舵杆手推车装置虽然能够起到通过舵杆的转动辅助车轮转动以 使车子启动较为省力的作用， 然而其结构复杂， 不易实施。
发明内容
本发明的目的是提供一种轻小型工业车辆， 釆用棘轮与棘爪配合的方式， 以买现将子抦的转动动作转换为驱动轮的转动动作， 从而使搮作者可以较为省 力地拖动或推动搬运车。
本发明的上述技术目的是通过以下技术方案得以实现的： 一种轻小型工业 车辆， 包括驱动轮、 手柄及能够将所述手柄转动动作转换为所述驱动轮转动动 作的驱动机构， 所述驱动机构包括具有齿且能够带动所述驱动轮转动的棘轮、 能够啮合于所述齿的棘爪、 用于安装所述棘爪且能够在所述棘爪与所述齿啮合 时成为所述棘轮的随动对象的拉板、 用于将所述手柄的转动动作转换为所述拉 板的转动动作的压杆及用于控制所述棘爪与所述棘轮脱开或啮合的触发机构。
釆用棘轮与棘爪配合的方式， 以实现将手柄的转动动作转换为驱动轮的转 动动作， 从而使操作者可以较为省力地拖动或推动搬运车。
作为本发明的优选， 所述触发机构包括通过转轴转动连接于所述拉板的定 位盘、 能够将所述挡位块固定于当前转动位置的定位杆、 能够将所述转轴的转 动动作转换为所述棘爪与棘轮之间的脱开或啮合动作的压块、 与所述定位盘相 对固定的脚踏板。
现有技术中， 如背景技术中所述的授权公开号为 CN1745011B 的发明专 利， 是通过手部操作以控制滚柱处于不同位置实现将舵杆上下往复运动转换为 转向轮的驱动运动， 由于操作者的手还要同时操作舵杆并要实施拖拉动作， 因 此， 此种方案对手部操作灵活度较高， 也即增加了装置操作难度； 然而， 本发 明的上述方案， 可以通过脚部动作实现棘爪与棘轮之间的啮合或脱开， 从而整 体上降低了操作难度。
作为本发明的优选， 所述棘爪具有转动连接于所述拉板的转动连接部及作 用于所述棘轮的啮合部； 所述压块具有作用于所述啮合部的触发部； 所述触发 部与所述啮合部之间连接有连接件。
上述设置， 啮合部与转动连接部不同轴， 且啮合部能绕转动连接部所在轴 线转动， 从而， 当啮合部与棘轮啮合后， 若手柄沿啮合部至转动连接部方向转 动， 则手柄的转动动作并不会带动驱动轮转动； 当手柄沿转动连接部至啮合部 方向转动时， 则手柄转动动作会带动驱动轮转动； 从而， 使得当操作者通过脚 踏板实现啮合与棘轮啮合后， 操作者可以通过连续的往复转动手柄以驱动搬运 车移动， 一方面由于通过对定位盘的一次定位， 即可持续往复转动手柄以驱动 搬运车移动， 因此， 进一步降低了操作难度， 另一方面由于棘爪与棘轮一直保 持在啮合状态， 使得搬运车在过障碍物， 特别是在上坡时， 不会倒退， 打滑， 提高了安全性， 同时使操作者能够更为省力。
作为本发明的优选， 所述棘爪具有转动连接于所述拉板的转动连接部及分 别位于所述转动连接部两侧用于啮合所述棘轮的啮合部。
上述设置， 在沿垂直于驱动轮轴线方向上， 通过不同啮合部与棘轮的啮 合， 实现两个方向上， 将手柄的转动动作转换为驱动轮的转动动作。
作为本发明的优选， 所述触发机构包括通过转轴转动连接于所述拉板且具 有三个卡口的定位盘、 设于所述拉板且能够卡于相应卡口而固定所述定位盘当 前转动位置的定位杆、 相对固定于所述转轴且具有分别能够作用于同一所述棘 爪相应啮合部以使相应啮合部啮合于所述棘轮的触发部的压块、 与所述定位盘 相对固定的脚踏板。
作为本发明的优选， 所述相应触发部与与该触发部对应的啮合部之间连接 有连接件。
连接件优选为弹性部件， 例如弹簧。
作为本发明的优选， 同一所述棘爪的啮合部沿轴向错开； 与同一所述棘爪 对应的棘轮具有两个， 且该两个棘轮轴向并排分布， 且该两棘轮， 其中一个棘 轮的齿的朝向与另一个棘轮的齿的朝向相背。
一方面更利于提高啮合部与相应棘轮之间的啮合度， 利于提高手柄转动所 做功转化为驱动轮转动动力的转化率； 另一方面使手柄沿啮合部至转动连接部 方向转动时， 更为省力， 尽可能减小棘爪与齿之间的摩损。 作为本发明的优选， 针对每个所述啮合部都设有一个使该啮合部转动连接 于所述拉板的转动端部； 所述转动连接部由同一所述棘爪的两个所述转动端部 构成。
作为本发明的优选， 所述压杆的两端分别转动连接于所述手柄与所述拉 板。
作为本发明的优选， 该种轻小型工业车辆还包括底座， 底座上设有油缸及 油泵； 所述手柄与所述油缸相对转动设置且所述手柄作用于所述油泵以控制所 述油缸油塞运动； 所述油缸的活塞杆上端设有顶板， 顶板固定连接有与所述底 座活动连接的车架； 车架下部设有支承轮； 所述底座下方设有相对固定于所述 油缸的轮轴， 所述驱动轮位于所述轮轴的两侧， 所述驱动轮与所述轮轴之间设 有滚珠轴承； 两个所述驱动轮相对的一侧都固设有两片轴向并排分布且齿朝向 相背的所述棘轮； 该两片棘轮分别是棘轮一与棘轮二； 所述轮轴上还套设有两 个所述拉板； 两个所述拉板之间转动连接有转轴， 所述转轴上固设有具有三个 卡口的定位盘； 两个所述拉板之间还设有能够卡于相应所述卡口的定位杆； 所 述拉板上开有用于安设所述定位杆的槽口； 所述定位杆与所述转轴之间设有用 于实现所述定位杆能够因受所述定位盘抵触力而在往返于不同卡口时能够沿垂 直于所述转轴轴向方向产生位移从而使所述定位杆卡于相应所述卡口的弹性 件； 每个所述拉板上都同轴转动连接有分别对应于所述棘轮一与所述棘轮二的 上棘爪与下棘爪； 上下棘爪都具有与所述拉板转动连接的转动连接部及用于与 相应所述棘轮啮合的啮合部； 所述转轴的两端都固设有分别与所述上棘爪或下 棘爪对应的上压块与下压块； 每个压块都具有作用于相应棘爪的触发部； 相应 触发部与相应啮合部之间设有连接件； 所述定位盘上还固设有便于操作者转动 定位盘的脚踏板； 所述压杆的两端分别转动连接于所述手柄与所述拉板。
综上所述， 本发明具有以下有益效果： 本发明结构简单， 釆用棘轮与棘爪 啮合的方式以实现将手柄的转动动作转换为驱动轮的转动动作， 有利于减少动 作转换过程中的功率损耗； 且本发明通过对定位盘的一次定位， 即可通过连续 的手柄往复转动以实现驱动轮沿前进方向上的不断转动， 从而降低了操作难 度， 更由于定位盘的定位可以通过脚部实现， 进一步提高了操作的便利性， 同 时也可以使操作者不必再拖动搬运车， 搬运更为省力； 且本实用新新型在过障 碍物， 特别是在上坡时， 不会打滑， 提高了搬运过程的安全性。
附图说明
图 1是实施例 1结构示意图；
图 2是实施例 1驱动机构示意图；
图 3是实施例 1驱动机构侧视图；
图 4是实施例 1中定位盘结构示意图；
图 5是实施例 1中拉板结构示意图。
图中， 4_底座， 41 -油缸， 42 -油泵， 2_手柄， 41 1 -活塞杆， 81-顶板， 8- 车架， 82 -支承轮， 1 1-轮轴， 1 -驱动轮， 12 -滚珠轴承， 31 1 1 -齿， 31 1 -棘轮 一， 312-棘轮二， 33-拉板， 34-压杆， 351 1-转轴， 351-定位盘， 3512-卡口， 331-槽口， 352 -定位杆， 3521 -弹性件， 321 -上棘爪， 322 -下棘爪， 3212 -啮合 部， 321 1-转动连接部， 3531 -上压块， 3532 -下压块， 3531 1 -触发部， 355 -连 接件， 354-脚踏板。
具体实施方式
以下结合附图对本发明作进一步详细说明。
本具体实施例仅仅是对本发明的解释， 其并不是对本发明的限制， 本领域 技术人员在阅读完本说明书后可以根据需要对本实施例做出没有创造性贡献的 修改， 但只要在本发明的权利要求范围内都受到专利法的保护。
实施例 1 : 如图 1-5所示， 一种轻小型工业车辆， 包括底座 4 , 底座 4上 设有油缸 41及油泵 42 ; 手柄 2—端铰接于油缸 41 , 手柄 2作用于油泵 42 , 从 而通过手柄 2的往复转动能够使油缸 41作活塞运动； 在油泵 42上还具有一拨 叉， 当拨叉在相应位置时， 手柄 2的转动能够启动油泵 42 , 当拨叉在另一位置 时， 手柄 2 的转动不会启动油泵 42 , 拨叉在图中未示出； 油缸 41 的活塞杆 411上端设有顶板 81 , 顶板 81 固定连接有与底座 4活动连接的车架 8 ; 车架 8 下部设有支承轮 82。
底座 4下方设有相对固定于油缸 41的轮轴 11 , 轮轴 11的两侧分别设有驱 动轮 1 , 驱动轮 1与轮轴 1 1之间设有滚珠轴承 12 ; 两个驱动轮 1相对的一侧 都固设有两片轴向并排分布且齿 3111 朝向相背的棘轮； 该两片棘轮分别是棘 轮一 311与棘轮二 312 ; 轮轴 11上位于最内侧的两个棘轮之间套设有两个拉板 33 , 两个拉板 33分别靠近相应所述的最内侧棘轮； 两个拉板 33之间转动连接 有转轴 3511 , 转轴 3511上固设有具有三个卡口 3512的定位盘 351 ; 两个拉板 33上都开有槽口 331 ; 两个槽口 331之间插设有能够卡于相应卡口 3512 的定 位杆 352 ; 定位杆 352与转轴 3511之间设有用于实现定位杆 352能够因受定位 盘 351抵触力而在往返于不同卡口 3512时能够沿垂直于转轴 3511轴向方向产 生位移从而使定位杆 352卡于相应卡口 3512的弹性件 3521 , 此弹性件 3521可 以为弹簧； 每个拉板 33 上都同轴转动连接有分别对应于棘轮一 311 与棘轮二 312 的上棘爪 321 与下棘爪 322 ; 上下棘爪都具有与拉板转动连接的转动端及 用于与相应棘轮啮合的啮合部 3212 ; 每个转动端都可视为转动连接部 3211 , 但由于同侧的上下棘爪的转动端同轴， 因此也可以视转动连接部 3211 包括同 侧的两个转动端； 转轴 3511 的两端都固设有分别与上棘爪 321 或下棘爪 322 对应的上压块 3531与下压块 3532 ; 每个压块都具有由于转轴 3511转动而产生 垂直于转轴 3511轴向方向位移从而作用于相应棘爪的触发部 35311 ; 相应触发 部 35311与相应啮合部 3212之间设有连接件 355 , 连接件 355优选为弹簧； 定 位盘 351上还固设有便于操作者转动定位盘 351的脚踏板 354 ; 压杆 34的两端 分别转动连接于手柄 2 与拉板 33 ; 定位盘 351 , 定位杆 352、 压块、 脚踏板 354 构成触发机构； 触发机构、 棘轮、 棘爪、 拉板 33、 压杆 34 构成将手柄 1 转动动作转换为所述驱动轮 1转动动作的驱动机构。
实施例 2 : 与实施例 1 的不同之处在于， 两个驱动轮 1相对的一侧都只固 设有一片棘轮， 棘轮上齿的朝向重合或平行于该齿的顶点与棘轮圓心的连线； 每个拉板 33上的上棘爪 321与下棘爪 322都能够啮合于该棘轮。
实施例 3: 与实施例 1 的不同之处在于， 两个驱动轮 1相对的一侧都只固 设有一片棘轮； 每个拉板 33上只具有一个能够啮合于该棘轮的棘爪。
同时， 通过适应性改变本实施例棘爪的结构或形状， 也可以使手柄 2 的上 下转动分别能够实现驱动轮 1 顺逆两个方向的转动； 而在本实施例中定位盘
351上用于定位定位杆 352的卡口 3512只需两个， 一个用于使棘爪脱开棘轮， 一个用于使棘爪啮合于棘轮。

Claims

权 利 要 求 书
1、 一种轻小型工业车辆， 包括驱动轮（1 )、 手柄 （2 )及能够将所述手柄（2 ) 转动动作转换为所述驱动轮（1 )转动动作的驱动机构， 其特征在于， 所述驱动 机构 ( 3 ) 包括具有齿（ 3111 )且能够带动所述驱动轮 ( 1 )转动的棘轮、 能够 啮合于所述齿 （3111 ) 的棘爪、 用于安装所述棘爪且能够在所述棘爪与所述齿 ( 31 11 )啮合时成为所述棘轮的随动对象的拉板（ 33 )、 用于将所述手柄 （ 2 ) 的转动动作转换为所述拉板（33 ) 的转动动作的压杆（34 )及用于控制所述棘 爪与所述棘轮脱开或啮合的触发机构。
2、 根据权利要求 1所述的一种轻小型工业车辆， 其特征在于， 所述触发机构包 括通过转轴 （ 3511 )转动连接于所述拉板（ 33 ) 的定位盘 （ 351 ), 能够将所述 挡位块（ 351 ) 固定于当前转动位置的定位杆（ 352 )、 能够将所述转轴（ 3511 ) 的转动动作转换为所述棘爪与棘轮之间的脱开或啮合动作的压块、 与所述定位 盘（ 351 )相对固定的脚踏板 ( 354 )。
3、 根据权利要求 2所述的一种轻小型工业车辆， 其特征在于， 所述棘爪具有转 动连接于所述拉板（ 33 ) 的转动连接部 （ 3211 ) 及作用于所述棘轮的啮合部
( 3212 ); 所述压块具有作用于所述啮合部（ 3212 ) 的触发部（ 3531 1 ); 所述触 发部 （ 35311 )与所述啮合部（ 3212 )之间连接有连接件 （ 355 )0
4、 根据权利要求 1所述的一种轻小型工业车辆， 其特征在于， 所述棘爪具有转 动连接于所述拉板（ 33 )的转动连接部（ 3211 )及分别位于所述转动连接部（ 3211 ) 两侧用于啮合所述棘轮的啮合部（ 3212 )。
5、 根据权利要求 4所述的一种轻小型工业车辆， 其特征在于， 所述触发机构包 括通过转轴 （ 3511 )转动连接于所述拉板（ 33 )且具有三个卡口 （ 3512 ) 的定 位盘（351 )、 设于所述拉板（33 )且能够卡于相应卡口 （3512 ) 而固定所述定 位盘（ 351 ) 当前转动位置的定位杆（ 352 )、 相对固定于所述转轴（ 3511 )且具 有分别能够作用于同一所述棘爪相应啮合部 （3212 ) 以使相应啮合部 （3212 ) 啮合于所述棘轮的触发部 （ 35311 ) 的压块、 与所述定位盘 （351 )相对固定的 脚踏板 ( 354 )。
6、 根据权利要求 5所述的一种轻小型工业车辆， 其特征在于， 所述相应触发部 ( 35311 )与与该触发部（ 35311 )对应的啮合部（ 3212 )之间连接有连接件（ 355 )0
7、 根据权利要求 4所述的一种轻小型工业车辆， 其特征在于， 同一所述棘爪的 啮合部 （ 3212 ) 沿轴向错开； 与同一所述棘爪对应的棘轮具有两个， 且该两个 棘轮轴向并排分布， 且该两棘轮， 其中一个棘轮的齿 （3111 ) 的朝向与另一个 棘轮的齿 （3111 ) 的朝向相背。
8、 根据权利要求 4所述的一种轻小型工业车辆， 其特征在于， 针对每个所述啮 合部 （ 3212 )都设有一个使该啮合部 （ 3212 )转动连接于所述拉板（ 33 ) 的转 动端部； 所述转动连接部 （321 1 ) 由同一所述棘爪的两个所述转动端部构成。
9、 根据权利要求 1所述的一种轻小型工业车辆， 其特征在于， 所述压杆（34 ) 的两端分别转动连接于所述手柄（2 ) 与所述拉板（33 )。
10、 根据权利要求 1 所述的一种轻小型工业车辆， 其特征在于， 该种轻小型工 业车辆还包括底座（ 4 ), 底座（ 4 )上设有油缸（ 41 )及油泵（ 42 ); 所述手柄
( 2 ) 与所述油缸（ 41 )相对转动设置且所述手柄 （ 2 )作用于所述油泵（ 42 ) 以控制所述油缸（ 41 )油塞运动； 所述油缸（ 41 ) 的活塞杆（ 411 )上端设有顶 板（ 81 ), 顶板（ 81 ) 固定连接有与所述底座（ 4 ) 活动连接的车架 （ 8 ); 车架
( 8 )下部设有支承轮 ( 82 ); 所述底座（ 4 )下方设有相对固定于所述油缸（ 41 ) 的轮轴（ 1 1 ), 所述驱动轮 ( 1 )位于所述轮轴（ 1 1 ) 的两侧， 所述驱动轮 ( 1 ) 与所述轮轴 ( 11 )之间设有滚珠轴承 ( 12 ); 两个所述驱动轮 ( 1 )相对的一侧 都固设有两片轴向并排分布且齿 （3111 )朝向相背的所述棘轮； 该两片棘轮分 别是棘轮一 ( 311 )与棘轮二（ 312 ); 所述轮轴（ 11 )上还套设有两个所述拉板 ( 33 ); 两个所述拉板 ( 33 )之间转动连接有转轴 （ 3511 )， 所述转轴 （ 3511 ) 上固设有具有三个卡口 （ 3512 ) 的定位盘 （ l ); 两个所述拉板（ 33 )之间还 设有能够卡于相应所述卡口 （3512 ) 的定位杆（ 352 ); 所述拉板（33)上开有 用于安设所述定位杆（ 352 )的槽口（ 331 );所述定位杆（ 352 )与所述转轴（ 3511 ) 之间设有用于实现所述定位杆（ 352 ) 能够因受所述定位盘（ 351 )抵触力而在 往返于不同卡口 （3512) 时能够沿垂直于所述转轴（3511 )轴向方向产生位移 从而使所述定位杆 （ 352 )卡于相应所述卡口 （3512) 的弹性件 （ 3521 ); 每个 所述拉板 ( 33)上都同轴转动连接有分别对应于所迷棘轮一（ 311 )与所述棘轮 二（ 312 ) 的上棘爪 ( 321 ) 与下棘爪 ( 322 ); 上下棘爪都具有与所述拉板转动 连接的转动连接部（3211 )及用于与相应所述棘轮啮合的啮合部 （3212 ); 所述 转轴（ 3511 ) 的两端都固设有分别与所述上棘爪（ 321 )或下棘爪（ 322 )对应 的上压块（ 3531 )与下压块 ( 3532 ); 每个压块都具有作用于相应棘爪的触发部 ( 35311 ); 相应触发部（ 35311 )与相应啮合部（ 3212 )之间设有连接件（ 355 ); 所述定位盘（ 351 )上还固设有便于操作者转动定位盘（ 351 )的脚踏板 ( 354 ); 所述压杆（34) 的两端分别转动连接于所述手柄 （2)与所述拉板（33)。
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CN103038121A (zh) 2010-04-16 2013-04-10 拉瓦斯欧洲有限责任公司 手动起重搬运车
CN201721574U (zh) * 2010-06-24 2011-01-26 张卫 手驱式滑板车
CN202499688U (zh) 2012-02-22 2012-10-24 浙江诺力机械股份有限公司 手动液压搬运车

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