WO2019085717A1 - 输送系统货物挂架驱动装置 - Google Patents

输送系统货物挂架驱动装置 Download PDF

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Publication number
WO2019085717A1
WO2019085717A1 PCT/CN2018/109790 CN2018109790W WO2019085717A1 WO 2019085717 A1 WO2019085717 A1 WO 2019085717A1 CN 2018109790 W CN2018109790 W CN 2018109790W WO 2019085717 A1 WO2019085717 A1 WO 2019085717A1
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Prior art keywords
section
main beam
driving
drive
guide rail
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PCT/CN2018/109790
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English (en)
French (fr)
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翁端文
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浙江衣拿智能科技有限公司
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Publication of WO2019085717A1 publication Critical patent/WO2019085717A1/zh

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G17/00—Conveyors having an endless traction element, e.g. a chain, transmitting movement to a continuous or substantially-continuous load-carrying surface or to a series of individual load-carriers; Endless-chain conveyors in which the chains form the load-carrying surface
    • B65G17/20—Conveyors having an endless traction element, e.g. a chain, transmitting movement to a continuous or substantially-continuous load-carrying surface or to a series of individual load-carriers; Endless-chain conveyors in which the chains form the load-carrying surface comprising load-carriers suspended from overhead traction chains
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G23/00—Driving gear for endless conveyors; Belt- or chain-tensioning arrangements
    • B65G23/44—Belt or chain tensioning arrangements

Definitions

  • the present invention relates to a conveyor system, and more particularly to a drive device on a conveyor system for driving a cargo pylon on a rail.
  • the main structure of the conveying system generally comprises a main beam, and the main beam is arranged, and some movable pushing mechanisms are arranged on the main beam to realize the movement of the cargo pylon along the main beam.
  • the push mechanism is generally a drive chain, and the drive chain is overlapped on the separated sprocket.
  • the drive chain is fixed with a plurality of push rods, and the push rods are vertically disposed with the drive chain.
  • a guide rail is arranged on the main beam along the main dyeing direction, the hook on the cargo hanger is hooked on the guide rail, the push rod is extended to the guide rail, and the push rod is used to push the hook, so that the cargo hanger is pushed by the push rod on the guide rail Go on. Since the length of the main beam is generally long and the main beam is arranged in a non-linear manner, if a driving chain is arranged along the direction of the main beam, it is necessary to provide a plurality of supporting wheels at the central position of the driving chain to accommodate the main beam. The curve goes.
  • the technical problem to be solved by the present invention is to provide a cargo rack driving device for a conveying system, which has good working stability and is convenient for driving the cargo hanger to stably travel on the guide rail.
  • a conveying system cargo pylon driving device comprising a main beam and a driving chain, the main beam is provided with a guide rail, and the driving chain is vertically provided with a plurality of spaced apart push rods The push rod is used for pushing the cargo hanger to travel on the guide rail, wherein the main beam is arranged in sections, and the ends of the adjacent two main beams are spaced apart from each other, and both ends of each main beam are rotated.
  • a sprocket is arranged, a driving motor is arranged on a main beam, the driving motor is coupled with a sprocket, and a closed driving chain is overlapped on two sprocket wheels on a main beam;
  • the guide rail is a monolithic structure The rails are connected to the main beams of each section.
  • the driving device adopts a segmented driving mode for the cargo pylon, and each segment of the driving segment works independently, and the transition of the cargo pylon can be realized by the structural setting of the end of the driving segment; or the cargo pylon can be used for traveling.
  • the inertia of the speed is to achieve a transitional connection between the adjacent drive segments of the cargo pylon, which requires a relatively small spacing between adjacent drive segments.
  • each of the main beam and the attachment thereon form an upstream driving section and a downstream driving section, and adjacent ends of the adjacent upstream driving section and the downstream driving section are respectively Upturned, the guide rail passes through the interval between the upstream drive section and the downstream drive section; the guide rail is arranged in a curved shape at an end position close to both the upstream drive section and the downstream drive section to accommodate their upturn, thereby being on the guide rail
  • a lifting section and a sliding section are formed on the upper driving section, and the push rod on the driving chain extends into the end position of the lifting section, and the starting end of the sliding section is connected with the end of the lifting section, and the connection position of the two is high.
  • the high point is located within the interval between the upstream drive segment and the downstream drive segment.
  • the upstream and downstream are in accordance with the direction of travel of the cargo pylon in the state of use of the conveyor system.
  • the cargo pylon travels on the guide rail from the upstream drive section to the downstream drive section.
  • the high point refers to the highest position of the lifting section and the sliding section in the vertical direction.
  • Upturning means that in the installed state, the ends of the upstream driving section and the downstream driving section are both raised upwards.
  • the cargo pylon travels on the lifting section of the guide rail, the height is raised, and when the cargo pylon travels on the sliding section on the guide rail, the height drops and eventually falls to the horizontal portion of the guide rail.
  • the sprocket and the downstream drive section on the upstream drive section adjacent to the downstream drive section are located on the same side of the high point on the rail.
  • the corresponding end of the upstream drive section passes over the high point and is biased to one side of the downstream drive section, thereby facilitating the push rod on the upstream drive section to push the cargo pylon to a high point, facilitating the cargo pylon to fall over the high point and naturally slide down to a lower point.
  • the push rod on the chain in the downstream drive section extends between the beginning and the end of the sliding section. This makes the cargo pylon slide during the sliding process of the sliding section, facilitating the push rod on the downstream driving section to push the hook on the cargo pylon, so that the cargo pylon travels stably on the sliding section.
  • the rail lifting section is parallel to the main beam at the inner end of the upstream driving section, and the sliding section is inclined. This allows the rail lift section to be adapted to the main beam run in the upstream drive section, facilitating the pusher on the upstream drive section to stably propel the cargo rack.
  • a mounting seat is fixed at one end of the main beam, and the driving motor is coupled to the mounting seat, and the mounting seat is provided with a tensioning device for tensioning the driving chain.
  • the structure of the tensioning device comprises a tensioning wheel, the driving chain is lapped on the tensioning wheel, and the sliding plate is provided on the back side of the mounting seat, and the axle of the tensioning wheel is connected to the sliding plate through the long hole in the mounting seat
  • the guide rod coupled with the sliding plate is inserted into the limiting plate fixed on the mounting seat, and the two ends of the spring sleeved on the guiding rod act on the guiding rod and the limiting plate respectively, and the spring passes through the guide
  • the rod urges the tensioning wheel to move in the direction of tensioning the drive chain.
  • the tensioning device has a simple structure and facilitates movement of the tensioning wheel position.
  • the tensioning wheel can maintain the tension of the driving chain, and the position of the tensioning wheel itself has a certain elastic change, which can well adapt to the tensioning requirement of the driving chain, and is convenient for the working of the driving chain to be stable. .
  • the guide rod is screwed to the adjusting nut, and one end of the spring is pressed against the adjusting nut.
  • a pair of limiting strips are respectively disposed on the opposite sides of the tensioning wheel on the mounting seat, and an arc limiting passage is formed between the two limiting strips of the pair, and the two limiting passages are “ The eight-shaped shape is distributed on opposite sides of the tensioning wheel.
  • the present invention has the beneficial effects that the cargo pylon driving device adopts a segmented structure to drive the traveling of the cargo pylon on the guide rail, and the conveying system corresponds to each segment of the main beam.
  • a closed drive chain is provided, which facilitates the drive chain to adapt well to the orientation of the main beam, and facilitates the stable pushing of the cargo hanger on the guide rail; on the other hand, the cargo hanger on the guide rail drives
  • the reaction force of the chain will not be concentrated on one integral drive chain, but will be distributed to multiple drive chains.
  • the drive chain will not be stretched seriously due to the large force, and will not even occur.
  • the phenomenon of fracture which can well guarantee the working stability of the conveying system.
  • Figure 1 is a plan view of the adjacent upstream drive section and downstream drive section of the cargo rack drive unit when they are placed together.
  • Figure 2 is a perspective view of the adjacent upstream drive section and downstream drive section of the cargo rack drive unit when they are placed together.
  • Figure 3 is a front elevational view of the adjacent upstream drive section and downstream drive section of the cargo rack drive.
  • Fig. 4 is an enlarged view of a portion A in Fig. 3;
  • Fig. 5 is an enlarged plan view showing the assembly of the tensioning device of one embodiment.
  • Fig. 6 is an enlarged plan view showing the assembly of the tensioning device of one embodiment.
  • Fig. 7 is an enlarged structural view of a tensioning device of another embodiment.
  • the conveyor system cargo pylon drive is used to drive the cargo pylon on the guide rail 5, the structure comprising the main beam 6 and the drive chain 9.
  • the main beam 6 is an aluminum alloy integrally formed piece, and the main beam 6 is provided with an elongated rail 5, and the driving chain 9 is vertically provided with a plurality of spaced apart push rods 7 for pushing the cargo rack on the guide rails 5 travels.
  • the main beam 6 adopts a segmented arrangement, and the ends of the adjacent two main beams 6 are spaced apart from each other.
  • a chain drive mechanism is disposed on each of the main beams 6, specifically, a sprocket is rotatably disposed at each end of each of the main beams 6, and a pair of sprocket wheels correspond to a drive motor 2
  • the drive motor 2 is disposed at the end of the main beam 6, the drive motor 2 is coupled to a sprocket, and a closed drive chain 9 is overlapped on the two sprockets on the main beam 6.
  • the guide rail 5 has a flat elongated shape, and the guide rail 5 is laterally disposed on the main beam 6.
  • the guide rail 5 is generally of a unitary structure, the guide rail 5 is adapted to the direction of the main beam 6, and the main sections 6 of each section are coupled together by the guide rail 5.
  • the cargo pylon is in the traveling direction of the guide rail 5, and the adjacent two sets of chain drive mechanisms are the upstream drive section 1 and the downstream drive section 3, respectively, and the cargo pylon travels on the guide rail 5 from the upstream drive section 1 to the downstream drive section 3 .
  • the adjacent ends of the adjacent upstream drive section 1 and downstream drive section 3 are both upturned, and the guide rail 5 passes through the space between the upstream drive section 1 and the downstream drive section 3.
  • the guide rail 5 is arranged in a curved shape at an end position where the upstream drive section 1 and the downstream drive section 3 are close to each other, that is, the cargo pylon travels to the upstream drive section 1 and the downstream drive section 3
  • the push rod 7 on the drive chain 9 can drive the hook on the cargo hanger, so that the cargo hanger can smoothly pass through the upstream drive section 1 and the downstream drive section 3 on the guide rail 5.
  • the sprocket and the downstream drive section 3 on the upstream drive section 1 adjacent to the downstream drive section 3 are located on the same side of the high point 8 on the guide rail 5, and the push rod 7 on the drive chain 9 in the downstream drive section 3 extends into the slide section 31. Between the beginning and the end.
  • the rail 5 lifting section 11 is parallel to the main beam 6 at the inner end of the upstream driving section 1, and the sliding section 31 is arranged obliquely.
  • the cargo pylon When the cargo pylon is pushed by the push rod 7 on the upstream driving section 1 to the end position of the lifting section 11, that is, when the aforementioned high point 8 is located, the cargo pylon will exert its own gravity and speed inertia. Down, it slides down diagonally along the sliding section 31.
  • One end of the main beam 6 is fixed with a plate-shaped mounting seat 4, and the driving motor 2 is coupled and fixed to the mounting base 4.
  • a tensioning device is movably mounted on the mounting base 4, and the drive chain 9 is lapped on the tensioning device for tensioning the drive chain 9 such that the drive chain 9 is in a moderately tensioned state.
  • the structure of the tensioning device includes a tensioning pulley 20 that is lapped over the tensioning pulley 20.
  • a pair of limit bars 17 are fixed on the back surface of the mount 4, and the slide plates 16 are inserted into the sliding grooves formed between the limit bars 17.
  • the axle 10 of the tensioning pulley 20 is coupled to the slider 16 through an elongated hole 21 in the mounting seat 4, and the axle 10 follows the slider 16 to slide within the elongated hole 21.
  • a limiting plate 13 is vertically fixed on the back surface of the mounting seat 4, and the guiding rod 12 coupled to the sliding plate 16 is intermittently inserted into the insertion hole formed in the limiting plate 13.
  • Both ends of the spring 14 that is sleeved on the guide rod 12 act on the guide rod 12 and the limit plate 13, respectively, and the spring 14 urges the tension pulley 20 to move in the direction in which the drive chain 9 is tensioned by the guide rod 12.
  • the guide rod 12 is screwed to the adjusting nut 18, and one end of the spring 14 is pressed against the adjusting nut 18, and the other end is pressed against the limiting plate 13.
  • the operator can adjust the pre-compacting of the spring 14 from the back side of the mounting seat 4 by means of a wrench, and the spring force of the spring 14 directly reflects the tension of the tensioning pulley 20 to the driving chain 9.
  • the operator can adjust the adjustment nut 18 according to the tension of the drive chain 9.
  • a tightening nut 15 is also screwed on the outer side of the adjusting nut 18. After adjusting the adjusting nut 18, the nut 15 is adjusted and tightened so that the tightening nut 15 abuts the adjusting nut 18, so that the adjustment is made.
  • the adjustment position of the nut 18 on the guide rod 12 is in a stable state.
  • the adjusting nut 18 can also be screwed on the limiting rod 17 on the other side of the limiting plate 13, and the relative positional relationship between the guiding rod 12 and the limiting plate 13 can be changed by rotating the adjusting nut 18, so that the tension is tightened.
  • the wheel 20 pulls the drive chain 9 in tension.
  • a spring 14 may also be disposed between the adjusting nut 18 and the limiting plate 13 to effect flexible tensioning of the drive chain 9 by the tensioning wheel 20.
  • a pair of limiting strips 22 are respectively arranged on the opposite sides of the tensioning pulley 20 on the mounting seat 4, and two of the pair of limiting strips 22 are formed.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
  • Chain Conveyers (AREA)
  • Warehouses Or Storage Devices (AREA)

Abstract

一种输送系统货物挂架驱动装置，包括主梁（6）和驱动链条（9），主梁（6）上设有导轨（5），驱动链条（9）上垂直设置有若干分隔开的推杆（7），推杆（7）用于推动货物挂架在导轨（5）上行进，所述主梁（6）分段式设置，相邻两段主梁（6）端部之间彼此间隔设置，每段主梁（6）的两端均转动地设置一链轮，一段主梁上设置一驱动电机（2），该驱动电机（2）与一链轮传动联接，一段主梁（6）上的两个链轮上搭接一根闭合式的驱动链条（9）；导轨（5）为整体式结构，导轨（5）联接各段主梁（6）。对货物挂架采取分段式的驱动方式，能够减轻货物挂架对单根驱动链条的压力，便于适应主梁的曲状走向设置，也使得驱动链条的工作稳定性好。

Description

输送系统货物挂架驱动装置 技术领域
本发明涉及一种输送系统，特别是涉及输送系统上的用于对货物挂架在导轨上行进进行驱动的驱动装置。
背景技术
由于货物种类的繁杂，为节省人力，现代仓储或超市内的货物转运，一般需要应用到物流输送系统来实现货物的远距离输送和分类。为便于实现货物的无障碍输送，货物需要实现架空输送。输送系统的主体结构一般包括主梁，依托主梁，在主梁上设置一些可动作的推送机构，来实现货物挂架沿主梁的走向移动。这种推送机构一般是驱动链条，驱动链条搭接在分隔开的链轮上，驱动链条上固定有若干推杆，这些推杆与驱动链条垂直设置。在主梁上沿主染的走向设置有导轨，货物挂架上的挂钩钩接在导轨，推杆伸向导轨，推杆用于对挂钩进行推动，而使得货物挂架在推杆的推动下在导轨上行进。由于主梁的长度一般较长，而且主梁采用非直线式布置，若沿主梁的走向设置一根驱动链条，则需要在驱动链条的中部位置处设置多个支撑轮，以适应主梁的曲线走向。另外，若是采用一整根驱动链条，导轨上所有的货物挂架对推杆的反作用力均作用在该整根式的驱动链条上，这对驱动链条的强度要求高，驱动链条易因高负荷工作而出现拉伸严重，甚至断裂，从而使得输送系统的工作稳定性差。
发明内容
本发明需要解决的技术问题：提供一种输送系统货物挂架驱动装置，该驱动装置的工作稳定性好，便于驱动货物挂架在导轨上稳定行进。
为解决所述技术问题，本发明的技术方案：一种输送系统货物挂架驱动装 置，包括主梁和驱动链条，主梁上设有导轨，驱动链条上垂直设置有若干分隔开的推杆，推杆用于推动货物挂架在导轨上行进，其特征在于，所述主梁分段式设置，相邻两段主梁端部之间彼此间隔设置，每段主梁的两端均转动地设置一链轮，一段主梁上设置一驱动电机，该驱动电机与一链轮传动联接，一段主梁上的两个链轮上搭接一根闭合式的驱动链条；导轨为整体式结构，导轨联接各段主梁。
本驱动装置对货物挂架采取分段式的驱动方式，各段驱动段独立工作，彼此之间可通过对驱动段端部的结构设置来实现货物挂架的过渡；也可以利用货物挂架行进速度的惯性，来实现货物挂架在各相邻驱动段之间实现过渡衔接，这就要求相邻驱动段之间的间隔相对较小。
进一步地，在货物挂架的行进方向上，各段主梁及其上的附件形成上游驱动段和下游驱动段，相邻的上游驱动段和下游驱动段两者的相靠近的端部均上翘，导轨穿过上游驱动段和下游驱动段之间的间隔；导轨在上游驱动段和下游驱动段两者相靠近的端部位置处为适应它们的上翘而呈曲状布置，从而在导轨上形成抬升段和下滑段，上游驱动段中驱动链条上的推杆伸入到抬升段的末端位置处，下滑段的起始端与抬升段的末端相连接，两者相连接的位置为高点，该高点位于上游驱动段和下游驱动段之间的间隔内。
所述的上游和下游是按照输送系统的使用状态下货物挂架的行进方向而言的，在使用状态上，货物挂架在导轨上自上游驱动段向下游驱动段方向行进。所述的高点，是指在竖直方向上，抬升段和下滑段的最高位置处。上翘是指在安装状态下，上游驱动段和下游驱动段两者相靠近的端部均向着上方抬高。货物挂架在导轨上的抬升段行进时，高度抬升，货物挂架在导轨上的下滑段上行进时，高度下降并最终下降到导轨的水平部分上。通过设置相应结构的上游驱动段和下游驱动段，货物挂架能够较为顺畅地越过相邻两驱动段之间的间隔，货物挂架在导轨上的行进稳定性能够得到保证。
进一步地，上游驱动段上靠近下游驱动段的链轮和下游驱动段位于导轨上高点的同一侧。上游驱动段的相应端部越过高点而偏向于下游驱动段的一侧，从而便于上游驱动段上的推杆把货物挂架推向高点，便于货物挂架越过高点而自然滑落到下滑段上。
进一步地，下游驱动段中链条上的推杆伸入到下滑段的起始段和末端之间。这使得货物挂架在下滑段滑动过程中，便于下游驱动段上的推杆对货物挂架上的挂钩进行推动，使得货物挂架在下滑段上行进稳定。
进一步地，导轨抬升段与上游驱动段内端处的主梁相平行，下滑段倾斜设置。这使得导轨抬升段能够与上游驱动段中的主梁走向相适应，便于上游驱动段上的推杆对货物挂架进行稳定推动。
进一步地，在一段主梁的一端固定有安装座，驱动电机联接在安装座上，在安装座上设有用于对驱动链条进行张紧的张紧装置。通过设置安装座以及在安装座上设置张紧装置，方便对驱动电机的设置，便于使驱动链条处于合适张紧的工作状态上。
进一步地，张紧装置的结构包括张紧轮，驱动链条搭接在张紧轮上，安装座的背面上设有滑板，张紧轮的轮轴穿过安装座上的长孔而联接固定在滑板上，与滑板相联接的导杆间隙地插接在固定在安装座上的限位板内，套接在导杆上的弹簧的两端分别作用在导杆和限位板上，弹簧通过导杆促使张紧轮向着对驱动链条张紧的方向移动。该张紧装置的结构简单，便于实现对张紧轮位置的移动。在弹簧的作用下，张紧轮能够保持对驱动链条的张紧，且张紧轮本身的位置具有一定的弹性变化，能够很好地适应对驱动链条的张紧要求，便于驱动链条的工作稳定。
进一步地，导杆上螺纹连接有调节螺母，弹簧的一端顶压在调节螺母上。通过调节螺母的设置，可以对弹簧的预弹力进行调整，能够有效保证张紧轮对驱动链条的张紧力基本恒定。
进一步地，在安装座上于张紧轮的相对两侧分别设置有一对限位条，一对中的两个限位条之间形成有弧形的限位通道，两个限位通道呈“八”字形分布在张紧轮的相对两侧。通过成对设置的限位条，可以很好地适应张紧轮的设置，便于对驱动链条的张紧。
与现有技术相比，本发明具有的有益效果：本货物挂架驱动装置采用了分段式结构来实现对货物挂架在导轨上的行进进行驱动，输送系统中对应于各段主梁而设置一根闭合式的驱动链条，这一方面便于驱动链条能够很好地适应主梁的设置走向，方便对导轨上的货物挂架进行稳定推动；另一方面，导轨上的货物挂架对驱动链条的反作用力不会集中在一根整体式的驱动链条上，而是被分摊到多根驱动链条上，驱动链条不会因受力较大而发生拉伸严重的现象，不会甚至于发生断裂的现象，从而能够很好地保证了输送系统的工作稳定性。
附图说明
图1是本货物挂架驱动装置中相邻的上游驱动段和下游驱动段布置在一起时的俯视图。
图2是本货物挂架驱动装置中相邻的上游驱动段和下游驱动段布置在一起时的立体图。
图3是本货物挂架驱动装置中相邻的上游驱动段和下游驱动段布置在一起时的主视图。
图4是图3中的A部放大图。
图5是一种实施方式的张紧装置的装配俯视放大结构图。
图6是一种实施方式的张紧装置的装配仰视放大结构图。
图7是另一种实施方式的张紧装置的放大结构图。
具体实施方式
见图中，本输送系统货物挂架驱动装置是用于驱动货物挂架在导轨5上行进，结构包括主梁6和驱动链条9。主梁6为铝合金一体成型件，主梁6上设有长条状的导轨5，驱动链条9上垂直设置有若干分隔开的推杆7，推杆7用于推动货物挂架在导轨5上行进。
为减轻货物挂架对单根驱动链条9的反作用力，主梁6采取了分段式的设置方式，相邻两段主梁6端部之间彼此间隔设置。与此相对应，在每段主梁6上均设置一套链式驱动机构，具体是，在每段主梁6的两端均转动地设置一链轮，一对链轮对应一驱动电机2，驱动电机2设置在主梁6的端部，该驱动电机2与一链轮传动联接，一段主梁6上的两个链轮上搭接一根闭合式的驱动链条9。导轨5为扁平的长条状，导轨5在主梁6上侧立设置。导轨5一般为整体式结构，导轨5适应主梁6的走向布置，各段主梁6均被导轨5联接在一起。货物挂架在导轨5的行进方向上，相邻两套链式驱动机构分别为上游驱动段1和下游驱动段3，货物挂架在导轨5上自上游驱动段1行进到下游驱动段3上。
相邻的上游驱动段1和下游驱动段3两者相靠近的端部均上翘，导轨5穿过上游驱动段1和下游驱动段3之间的间隔。导轨5在上游驱动段1和下游驱动段3两者相靠近的端部位置处为适应它们的上翘而呈曲状布置，也即是货物挂架行进到上游驱动段1和下游驱动段3两者相靠近的端部时，驱动链条9上的推杆7能够对货物挂架上的挂钩进行驱动，而使得货物挂架在导轨5上能够顺利通过上游驱动段1和下游驱动段3两者的间隔。这导致在导轨5上形成抬升段11和下滑段31，抬升段11处于上游驱动段1的相应位置处，下滑段31处于下游驱动段3的相应位置处。上游驱动段1中驱动链条9上的推杆7伸入到抬升段11的末端位置处，上游驱动段1上的推杆7能够把货物挂架推动到抬升段11的末端位置，也即是下述的高点8位置。下滑段31的起始端与抬升段11的末端相连接，两者相连接的位置为高点8，该高点8位于上游驱动段1和下游驱动段3之间的间隔内。所述的起始端和末端也是按照货物挂架的行进方 向而言的，在一功能部上，货物挂架自起始端向末端前进。
上游驱动段1上靠近下游驱动段3的链轮和下游驱动段3位于导轨5上高点8的同一侧，下游驱动段3中驱动链条9上的推杆7伸入到下滑段31的起始段和末端之间。
导轨5抬升段11与上游驱动段1内端处的主梁6相平行，下滑段31呈倾斜布置。货物挂架被上游驱动段1上的推杆7推动到抬升段11的末端位置处时，也即是前述的高点8位置处时，货物挂架会在自身所受到的重力及速度惯性作用下而沿下滑段31斜向下滑落。
一段主梁6的一端固定有板状的安装座4，驱动电机2联接固定在安装座4上。在安装座4上活动地设有张紧装置，驱动链条9搭接在张紧装置上，张紧装置用于对驱动链条9进行张紧，而使得驱动链条9处于适度的张紧状态上。
见图5、6，张紧装置的结构包括张紧轮20，驱动链条9搭接在张紧轮20上。在安装座4的背面上固定一对限位杆17，滑板16插接在限位杆17之间所形成的滑动槽中。张紧轮20的轮轴10穿过安装座4上的长孔21而联接固定在滑板16上，该轮轴10跟随滑板16而在该长孔21内滑动。在安装座4的背面上竖直地固定有一限位板13，与滑板16相联接的导杆12间隙地插接在限位板13上所加工的插孔内。套接在导杆12上的弹簧14的两端分别作用在导杆12和限位板13上，弹簧14通过导杆12促使张紧轮20向着对驱动链条9张紧的方向移动。
导杆12上螺纹连接有调节螺母18，弹簧14的一端顶压在调节螺母18上，另一端顶压在限位板13上。操作工可以自安装座4的背侧利用扳手扳动调节螺母18，而对弹簧14的预压紧进行调整，弹簧14的弹力直接反应张紧轮20对驱动链条9的张紧力。操作工可根据驱动链条9的拉伸情况，而对调节螺母18进行调整。在导杆12上，于调节螺母18的外侧还螺纹连接有并紧螺母15，在对调节螺母18调节完毕后，调节并紧螺母15，使并紧螺母15紧贴调节螺母18， 而使调节螺母18在导杆12上的调节位置处于稳定的状态上。当然，也可以在限位杆17上于限位板13的另一侧螺纹连接调节螺母18，通过转动调节螺母18而改变导杆12与限位板13之间的相对位置关系，使得张紧轮20对驱动链条9进行拉动式的张紧。也可以在该调节螺母18与限位板13之间设置弹簧14，来实现张紧轮20对驱动链条9进行柔性张紧。
为适应张紧轮20在安装座4上的设置，在安装座4上于张紧轮20的相对两侧分别设置有一对限位条22，一对中的两个限位条22之间形成有弧形的限位通道19，两个限位通道19呈“八”字形分布在张紧轮20的相对两侧，张紧轮20两侧的驱动链条9分别穿过两个限位通道19，并可在限位通道19内滑动。

Claims (9)

  1. 一种输送系统货物挂架驱动装置，包括主梁和驱动链条，主梁上设有导轨，驱动链条上垂直设置有若干分隔开的推杆，推杆用于推动货物挂架在导轨上行进，其特征在于，所述主梁分段式设置，相邻两段主梁端部之间彼此间隔设置，每段主梁的两端均转动地设置一链轮，一段主梁上设置一驱动电机，该驱动电机与一链轮传动联接，一段主梁上的两个链轮上搭接一根闭合式的驱动链条；导轨为整体式结构，导轨联接各段主梁。
  2. 根据权利要求1所述的货物挂架驱动装置，其特征在于，在货物挂架的行进方向上，各段主梁及其上的附件形成上游驱动段和下游驱动段，相邻的上游驱动段和下游驱动段两者的相靠近的端部均上翘，导轨穿过上游驱动段和下游驱动段之间的间隔；导轨在上游驱动段和下游驱动段两者相靠近的端部位置处为适应它们的上翘而呈曲状布置，从而在导轨上形成抬升段和下滑段，上游驱动段中驱动链条上的推杆伸入到抬升段的末端位置处，下滑段的起始端与抬升段的末端相连接，两者相连接的位置为高点，该高点位于上游驱动段和下游驱动段之间的间隔内。
  3. 根据权利要求2所述的货物挂架驱动装置，其特征在于，上游驱动段上靠近下游驱动段的链轮和下游驱动段位于导轨上高点的同一侧。
  4. 根据权利要求2所述的货物挂架驱动装置，其特征在于，下游驱动段中链条上的推杆伸入到下滑段的起始段和末端之间。
  5. 根据权利要求2所述的货物挂架驱动装置，其特征在于，导轨抬升段与上游驱动段相应端部处的主梁相平行，下滑段呈倾斜设置。
  6. 根据权利要求1至5任一所述的货物挂架驱动装置，其特征在于，在一 段主梁的一端固定有安装座，驱动电机联接在安装座上，在安装座上设有用于对驱动链条进行张紧的张紧装置。
  7. 根据权利要求6所述的货物挂架驱动装置，其特征在于，张紧装置的结构包括张紧轮，驱动链条搭接在张紧轮上，安装座的背面上设有滑板，张紧轮的轮轴穿过安装座上的长孔而联接固定在滑板上，与滑板相联接的导杆间隙地插接在固定在安装座上的限位板内，套接在导杆上的弹簧的两端分别作用在导杆和限位板上，弹簧通过导杆促使张紧轮向着对驱动链条张紧的方向移动。
  8. 根据权利要求7所述的货物挂架驱动装置，其特征在于，导杆上螺纹连接有调节螺母，弹簧的一端顶压在调节螺母上。
  9. 根据权利要求7所述的货物挂架驱动装置，其特征在于，在安装座上于张紧轮的相对两侧分别设置有一对限位条，一对中的两个限位条之间形成有弧形的限位通道，两个限位通道呈“八”字形分布在张紧轮的相对两侧。
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