JP5142077B2 - Transport cart - Google Patents

Transport cart Download PDF

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Publication number
JP5142077B2
JP5142077B2 JP2008025440A JP2008025440A JP5142077B2 JP 5142077 B2 JP5142077 B2 JP 5142077B2 JP 2008025440 A JP2008025440 A JP 2008025440A JP 2008025440 A JP2008025440 A JP 2008025440A JP 5142077 B2 JP5142077 B2 JP 5142077B2
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Japan
Prior art keywords
horizontal
support
cart
tilt
tilting
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Expired - Fee Related
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JP2008025440A
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Japanese (ja)
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JP2009184775A (en
Inventor
正俊 吉崎
和樹 太田
茂 佐々木
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株式会社日立プラントテクノロジー
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Description

  The present invention relates to a transport cart, and more particularly to a transport cart for transporting large and heavy containers configured in a cylindrical shape from a building at an installation location via a low entrance.
  Patent Document 1 discloses a reversing transfer machine having a reversing function. This reverse transfer machine is a carriage that receives waste home appliances and transfers them to a transport conveyor of a recycling facility in order to disassemble and recycle waste home appliances such as refrigerators, washing machines, and air conditioners. .
  In this reversal transfer machine, an L-shaped load receiving base is supported by a bearing via a drive pin on a frame base as a main body so as to be tiltable. The waste home electric appliances loaded on the L-shaped cradle are changed in posture from the upright state to the horizontal state by tilting the L-shaped cradle, and then placed on the elevation part of the L-shaped cradle. When the conveyor is driven, the waste home appliances are transferred from the L-shaped cradle to the transport conveyor of the recycling facility.
On the other hand, the transport cart described in Patent Document 2 is placed at a predetermined position on a flat main surface of the cart main body including a front caster and a rear caster, and the vertical direction of the cart main body. And an L-shaped pedestal provided in a rotatable manner, and one end side pivotally supported on the trolley main body side, and an overturn prevention device provided so as to be grounded by performing the same operation as the L-shaped pedestal. . Moreover, the cart body includes a rotation shaft on the rear caster side on which the lower end side of the L-shaped cradle is pivotally supported. Further, the L-shaped cradle is placed on a flat surface of the cart body, and a flat horizontal cradle part whose rear caster side is supported by a rotating shaft and a substantially right angle from the rear caster side of the horizontal cradle part. And an upright stand that is provided upright. Furthermore, the fall prevention tool is provided with a coiled spring as a fall prevention tool stopper means so that the state where the other end side is grounded is maintained. Therefore, according to this transporting cart, it is possible to transport one transported object by a single transporting cart device in order to transport one transported product sideways. Moreover, at the time of standing work of the conveyed product at the conveyance destination, it is possible to prevent the fall due to the movement of the center of gravity to the rear of the entire conveying cart device due to the influence of the L-shaped cradle and the conveyed product weight.
JP 2001-335127 A JP 2006-335521 A
  However, since the conveyance cart of Patent Document 1 described above has a structure in which the L-shaped load receiving table is tilted from the outside of the frame base toward the upper position of the frame base, When the center of gravity position of the discarded home appliances placed on the load receiving table is outside the frame table, the frame table may fall down.
  Moreover, although the conveyance trolley | bogie of the patent document 2 mentioned above prevents the fall by the movement of the gravity center to the back of the whole conveyance trolley apparatus by the influence of a L-shaped cradle and a conveyance thing weight with a fall prevention tool, In addition to the tilting L-shaped cradle, a fall prevention tool has to be provided separately, and there is a drawback that the structure becomes complicated.
  The present invention has been made in view of such circumstances, and an object of the present invention is to provide a transport cart that can prevent the cart body from being overturned while the transported object is tilted with a simple configuration.
In order to achieve the above object, the present invention provides a main body having a front wheel and a rear wheel, an inclined base supported tiltably on the main body, and loaded with an object to be conveyed, and the inclined base including the main body. A drive unit that moves in a range between an upright position and an inclined position inclined by a predetermined angle, and the position of the center of gravity of the conveyed object loaded on the inclined table is a front wheel of the carriage main body while the inclined table is tilted The tilting table is tilted so as to move above a horizontal plane surrounded by the rear wheel, and the tilting table is configured in an L shape including a vertical support part and a horizontal support part. The carriage main body is supported by the carriage main body via an up / down / rotation support section so as to be movable up and down and rotatable. The horizontal support section can be horizontally moved and rotated through the horizontal / rotation support section. Supported, and the horizontal support part is horizontal by the drive part. The horizontal support portion is rotated in conjunction with the movement, and the vertical support portion is moved up and down and rotated to tilt the tilting table, and the horizontal support by the driving portion is performed. The horizontal movement speed of the part is controlled based on the vertical load received by the horizontal / rotation support part, and at a position where the vertical load becomes the maximum value, it is slower than the normal speed at a position other than the position. It is characterized by being controlled .
According to the present invention, the tilt table tilts so that the position of the center of gravity of the object loaded on the tilt table moves above the horizontal plane surrounded by the front wheel and the rear wheel of the cart body while the tilt table is tilted. Is done. For this reason, since the cart body does not fall while the tilting table is tilted, and the fall prevention tool is unnecessary, it is possible to prevent the cart body from falling while the conveyed object is tilted with a simple configuration. This transport cart is a large and heavy-weight container in which the object to be transported is formed in a cylindrical shape, and is suitable for a cart that is carried out and carried in from a building at an installation location via a low entrance.
Ramp of the onset Ming is configured in an L-shape comprising a vertical support portion and the horizontal support, the vertical support portion movable up and down freely and rotate the carriage body via a vertical / rotation support portion The horizontal support portion is supported by the carriage main body through the horizontal / rotation support portion so as to be horizontally movable and rotatable. When the horizontal support unit is moved in the horizontal direction by the drive unit, the horizontal support unit is rotated in conjunction with this movement, and the vertical support unit is rotated while moving up and down, whereby the tilting table is tilted. Is done. By supporting the vertical support portion and the horizontal support portion on the cart body in this way, the center of gravity position of the object to be transported loaded on the tilt table is surrounded by the front and rear wheels of the cart body while the tilt table is tilting. An inclined base that moves above a horizontal plane can be configured.
  As the tilting table on which the object to be transported is tilted, the position of the horizontal / rotation support portion changes with respect to the center of gravity position of the object to be transported. The vertical load to / from the support varies. When the tilting speed is increased at the position where the vertical load is at the maximum value and the vicinity thereof, that is, when the horizontal moving speed of the horizontal supporting part by the driving part is increased, the inertial force causes the horizontal / rotating supporting part to be overloaded. May cause failure, damage, or damage.
Therefore, according to the present invention, the horizontal movement speed of the horizontal support unit by the drive unit is controlled based on the vertical load received by the horizontal / rotation support unit , and at the position where the vertical load becomes the maximum value, Control at a lower speed than the normal speed at other positions. Thereby, it can prevent that an overload is applied to a horizontal / rotation support part, and can protect a horizontal / rotation support part from an overload.
  According to the transport cart according to the present invention, the position of the center of gravity of the object loaded on the tilt table moves above the horizontal plane surrounded by the front and rear wheels of the cart body while the tilt table is tilting. Because the tilting table is tilted, the cart body does not fall during tilting of the tilting table, and the tipping prevention tool is unnecessary, so the cart body can be prevented from tipping while the transported object is tilted. Can do.
  DESCRIPTION OF EMBODIMENTS Hereinafter, preferred embodiments of a transport carriage according to the present invention will be described in detail with reference to the accompanying drawings.
  FIG. 1 is an overall perspective view of a transport cart 10 according to the embodiment, FIG. 2 is a top view of the transport cart 10, FIG. 3 is a rear view of the transport cart 10, and FIG. It is the side view of the conveyance trolley | bogie 10 which showed the state by which the cylindrical container 12 is tilted.
  As shown in these drawings, the transport carriage 10 includes a carriage main body 18 having front wheels 14 and 14 and rear wheels 16 and 16, an inclined base 20 that is supported by the carriage main body 18 so as to be tiltable and on which the cylindrical container 12 is loaded. And a drive unit 22 for moving the tilting table 20 in a range between an upright position and a tilted position inclined by a predetermined angle (70 °) with respect to the cart body 18.
  The cart body 18 is firmly constructed by connecting a plurality of steel materials in a frame shape, and a corner of the front portion of the cart body 18 is provided with a rotatable transport roller that is the front wheels 14, 14. At the corners of the rear part of the carriage main body 18, the rotatable wheels 16, 16 that are rotatable are provided. Note that at least one of the front wheels 14 and 14 is a conveyance roller with a hydraulic drive, and similarly, at least one of the rear wheels 16 and 16 is a conveyance roller with a hydraulic drive. Therefore, the transport carriage 10 is configured to be self-propelled by these transport rollers with a hydraulic drive device.
  As shown in FIG. 1, the tilting table 20 includes a pair of support members 24, 24 that are made of steel and configured in an L shape, and the support members 24, 24 are separated by a vertical support portion 26 and a horizontal support portion 28. Are connected to each other. In addition, the inclined base 20 is firmly configured by connecting these support members 24, 24 using a plurality of steel materials 30, 30.
  Each vertical support portion 26 has a rail 32 constituting a linear motion guide fixed to the back side thereof along the axial direction of the vertical support portion 26. A slider 34 is slidably fitted to the rail 32, and the slider 34 is rotatably connected to an L-shaped column base 36 fixed to the carriage body 18 via a horizontal pin 38.
  On the other hand, one end portion of each horizontal support portion 28 is fixed to the lower end portion of the vertical support portion 26 via an L-shaped bracket 40. The bracket 40 is rotatably supported by a slider 44 via a horizontal pin 42, and the slider 44 is slidably fitted to a rail 46. As shown in FIG. 2, the rail 46 is fixed to the upper surface of a steel material 48 disposed from the front part to the rear part of the carriage body 18.
  According to the tilt base 20 having such a configuration, when the slider 44 is slid along the rail 46 in the left direction in FIG. 4 from the position shown by the solid line in FIG. 4, the slider 44 in FIGS. As shown in the figure, the entire tilting table 20 rotates (tilts) clockwise with the horizontal pin 42 as a rotation axis, and the slider 34 rotates (tilts) clockwise with the horizontal pin 38 as a rotation axis. To go. At the same time, the rail 32 slides obliquely downward while being guided by the slider 34. By this operation, when the slider 44 moves from the movement start end position in FIG. 5A to the movement end position in FIG. 5F, the tilting table 20 moves from the upright position shown in FIG. 5A to the position shown in FIG. It is tilted to an inclined position inclined by 70 ° as shown in FIG. Here, the rail 32, the slider 34, and the horizontal pin 38 constitute an up / down / rotation support portion, and the rail 46, the slider 44, and the horizontal pin 42 constitute a horizontal / rotation support portion. As shown in FIG. 1, blocks 50, 50 are fixed downward on the other end side of the horizontal support portion 28, and these blocks 50, 50 are used for the steel material 51 constituting the cart body 18. By being brought into contact with the upper surface, the tilting table 20 is held in the upright position of FIG.
  Next, the drive unit 22 that tilts the tilt base 20 will be described.
  As shown in FIGS. 1 and 2, the drive unit 22 includes a motor 52, a pair of ball screws 54 and 54, a pair of nuts 56 and 56, and the like.
  The motor 52 is fixed to the center of the rear side of the carriage body 18. Further, the front ends of the pair of ball screws 54, 54 are rotatably supported by the carriage body 18 via bearings 55, 55 so as to be parallel to the rails 46, 46, and the rear ends thereof will be described later. The gear box 64 is connected. Further, the nut 56 is fixed to a square tube 58 that connects the sliders 44, 44 of the tilt base 20, and a ball screw 54 is screwed into the nut 56. The ball screw 54 is disposed through the rectangular tube 58.
  The drive shaft of the motor 52 is connected to a bevel gear that is built in the gear box 60 and branches power to the left and right. Each coupling 62 extending from the gear box 60 to the left and right is connected to the ball screw 54 through a worm gear (not shown) built in the gear box 64 so that power can be transmitted. Therefore, when the motor 52 is driven, the power is transmitted to the gear boxes 64, 64 on both sides, and the ball screws 54, 54 rotate in the same direction. By the rotation of the ball screws 54, 54, the tilting table 20 is reciprocated along the rails 46, 46 via the square tube 58 to which the nuts 56, 56 are fixed. It is tilted from the upright position indicated by A) to the inclined position inclined by 70 ° as shown in FIG.
  As shown in FIGS. 2 to 4, the cart body 18 of the transport cart 10 has an operation panel 66 for turning on and off the motor 52, and the number of rotations of the motor 52 according to the tilt angle of the tilt table 20. And a control panel 68 in which a program to be controlled is stored. Further, the container 12 loaded on the tilting table 20 is stably loaded on the tilting table 20 by the fixing bands 70 as shown in FIG.
  Next, the characteristics of the transport carriage 10 configured as described above will be described.
  As shown in FIGS. 5A to 5F, the transport cart 10 is configured such that the position of the center of gravity G of the container 12 loaded on the tilt table 20 is the front wheel 14 of the cart body 18 while the tilt table 20 is tilted. The tilting table 20 is tilted so as to move above a horizontal plane surrounded by 14 and the rear wheels 16 and 16.
  For this reason, since the cart body 18 does not fall over while the tilting table 20 is tilted, and the tipping prevention tool is unnecessary, the cart body 18 can be prevented from tipping over while the container 12 is tilted. Therefore, this conveyance trolley 10 is suitable for the trolley | bogie which carries out and carries in the container 12 from the building of an installation place via a low entrance.
  In addition, the inclined platform 20 of the transport carriage 10 is configured in an L shape including a vertical support portion 26 and a horizontal support portion 28, and the vertical support portion 26 is interposed via the above-described up / down / rotation support portion. The horizontal support 28 is supported by the carriage main body 18 through the horizontal / rotation support part described above so as to be horizontally movable and rotatable. When the horizontal support portion 28 is moved in the horizontal direction by the nut 56, the horizontal support portion 28 is rotated in conjunction with this movement, and the vertical support portion 26 is rotated while being moved up and down to be inclined. The table 20 is tilted.
  Thus, by supporting the vertical support part 26 and the horizontal support part 28 on the cart body 18, the position of the center of gravity G of the container 12 loaded on the tilting table 20 can be adjusted while the tilting table 20 is tilted. An inclined base 20 that moves above a horizontal plane surrounded by the front wheel 14 and the rear wheel 16 can be configured.
  FIG. 6A is a graph showing the vertical load according to the tilt angle output from the load cell, which is provided with a load cell (not shown) as a load measuring device on the horizontal pin 42. FIG. 6B is a graph showing the horizontal load corresponding to the tilt angle output from the load cell similarly provided with a load cell (not shown) on the horizontal pin 42.
  As shown in FIG. 6 (A), in the upright position with an inclination angle of 0 °, the vertical load from the load cell shows 8000 kgf (8 t) which is the mass of the container 12, and from this angle, the inclination angle is about 17.5 °. The load increases and reaches a peak load (9060 kgf) at an inclination angle of about 17.5 °, decreases thereafter, increases slightly, but reaches 4090 kgf at an inclination angle of 70 °.
  Further, according to FIG. 6B, the horizontal load (the direction in which the ball screw 54 is sent (tilted) is set to +) is reversed from (+) to (−) at a position where the tilt angle is about 26 °. This is because the position of the horizontal pin 42 changes to the front side of the transport carriage 10 with respect to the vertical line of the center of gravity G of the container 12.
  By the way, as for this conveyance trolley | bogie 10, the horizontal moving speed of the horizontal support part 28 by the motor 52 is controlled based on the vertical load which a horizontal / rotation support part (horizontal pin 42) receives.
  That is, as the tilt table 20 on which the container 12 is loaded tilts, the position of the horizontal pin 42 changes with respect to the position of the center of gravity G of the container 12, so the horizontal pin 42 corresponds to the tilt angle of the tilt table 20. The vertical load that is received varies as shown in FIG. When the tilting speed is increased at the position where the vertical load is the maximum value and the vicinity thereof, that is, when the horizontal moving speed of the horizontal pin 42 (slider 44) by the drive unit 22 is increased, the inertial force causes the horizontal pin 42 to be excessive. A load is applied, which may cause failure or damage.
  Therefore, the horizontal moving speed of the slider 44 by the drive unit 22 is controlled based on the vertical load received by the horizontal pin 42.
  That is, as shown in the graph of FIG. 7, the slider 44 is moved at a speed lower than the normal speed at the position of 17.5 ° where the vertical load is the maximum value and its neighboring value, and is normal at the position other than the position. Move at a speed or slightly faster. Accordingly, it is possible to prevent the horizontal pin 42 from being overloaded and to protect the horizontal pin 42 and the slider 44 from overload.
Overall perspective view showing a transport carriage of an embodiment Top view of the transport cart shown in FIG. Rear view of the transport cart shown in FIG. The side view which showed the state in which a cylindrical container is tilted by the conveyance trolley shown in FIG. Explanatory drawing showing tilting movement of tilting table Graph showing the vertical load and horizontal load received by the horizontal pin with respect to the angle of the tilt table A graph showing slider movement speed control with respect to the tilt angle of the tilt table
Explanation of symbols
  DESCRIPTION OF SYMBOLS 10 ... Conveyance trolley, 12 ... Container, 14 ... Front wheel, 16 ... Rear wheel, 18 ... Carriage body, 20 ... Inclination stand, 22 ... Drive part, 24 ... Support member, 26 ... Vertical support part, 28 ... Horizontal support part, 30 ... Steel, 32 ... Rail, 34 ... Slider, 36 ... Column base, 38 ... Horizontal pin, 40 ... Bracket, 42 ... Horizontal pin, 44 ... Slider, 46 ... Rail, 48 ... Steel, 50 ... Block, 51 ... Steel , 52 ... Motor, 54 ... Ball screw, 56 ... Nut, 58 ... Square tube, 60 ... Gear box, 62 ... Coupling, 64 ... Gear box, 66 ... Control panel, 70 ... Control panel, 70 ... Fixing band

Claims (1)

  1. A bogie body having front and rear wheels;
    A tilting table that is tiltably supported by the cart body and on which a transported object is loaded;
    A drive unit that moves the tilt base in a range of an upright position and a tilt position inclined by a predetermined angle with respect to the cart body;
    The tilt table is tilted so that the position of the center of gravity of the transported object loaded on the tilt table moves above a horizontal plane surrounded by the front wheel and the rear wheel of the cart body during tilting of the tilt table ,
    The inclined base is configured in an L shape composed of a vertical support portion and a horizontal support portion,
    The vertical support part is supported by the cart body via an up / down / rotation support part so as to be vertically movable and rotatable,
    The horizontal support portion is supported by the cart body through the horizontal / rotation support portion so as to be horizontally movable and rotatable,
    When the horizontal support portion is moved in the horizontal direction by the driving portion, the horizontal support portion is rotated in conjunction with the movement, and the vertical support portion is moved up and down and rotated to rotate the tilt base. Tilted,
    The horizontal movement speed of the horizontal support unit by the drive unit is controlled based on the vertical load received by the horizontal / rotation support unit, and at a position other than the position at which the vertical load is the maximum value. The transport cart is controlled at a lower speed than the normal speed .
JP2008025440A 2008-02-05 2008-02-05 Transport cart Expired - Fee Related JP5142077B2 (en)

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JP5142077B2 true JP5142077B2 (en) 2013-02-13

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Cited By (2)

* Cited by examiner, † Cited by third party
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US6796185B2 (en) 2002-08-30 2004-09-28 Yokogawa Electric Corporation Differential pressure/pressure transmitter
CN109230160A (en) * 2018-07-25 2019-01-18 杨常志 A kind of rectangular flower-pot conveyer being lifted by the laborsaving mode of lever principle

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JP2012218941A (en) * 2011-04-14 2012-11-12 Hokuriku Electric Power Co Inc:The Device for erecting control panel
GB201304581D0 (en) * 2013-03-14 2013-05-01 Mechanical Installations & Maintenance N I Ltd Load transport apparatus
CN103723424A (en) * 2013-11-09 2014-04-16 胡新林 House moving device convenient to use
CN103612094B (en) * 2013-11-22 2016-01-20 北京卫星环境工程研究所 The upset unwheeling that spacecraft regulates with six degree of freedom
JP6178774B2 (en) * 2014-10-22 2017-08-09 信越半導体株式会社 Surface plate carriage
JP2017007762A (en) * 2015-06-17 2017-01-12 株式会社Ihi Erection device and erection method
CN107323939A (en) * 2017-06-26 2017-11-07 太仓市鼎宇货运有限公司 A kind of goods barrow
CN111267927B (en) * 2020-03-23 2020-09-22 淮南四灵科技服务有限公司 Efficient material quick transfer device

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JP3236509B2 (en) * 1996-06-11 2001-12-10 株式会社巴技研 A moving trolley that transports long workpieces with a rectangular cross section in the horizontal direction
JP2002321626A (en) * 2001-04-27 2002-11-05 Elna Co Ltd Truck

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6796185B2 (en) 2002-08-30 2004-09-28 Yokogawa Electric Corporation Differential pressure/pressure transmitter
CN109230160A (en) * 2018-07-25 2019-01-18 杨常志 A kind of rectangular flower-pot conveyer being lifted by the laborsaving mode of lever principle

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