JP2010070285A - Lift device and heavy load moving system with the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lift device to be used for a heavy load moving system capable of solving the problem wherein it is necessary to locate two of a lift device dedicated to go up and a lift device dedicated to go down in two positions and, as a result, it is necessary to secure a location and it costs. <P>SOLUTION: This lift device L includes a support frame 1 provided in the vertical direction, and the support frame 1 is provided with an upper sprocket 2 and a lower sprocket 3. A lift member 4 is stretched between the upper sprocket 2 and the lower sprocket 3 freely to reciprocate, and the lift member 4 is driven to lift by a driving motor 5. Two horizontal decks 6 possible to be loaded with a heavy load B are fixed to the lift member 4, and the two horizontal decks 6 are provided in two positions symmetrical around an intermediate point of an interval between two lift members 4 lifting in opposite directions to each other, and the decks 6 have lift devices L moving in the opposite directions to each other at the same time. A heavy load moving system has this lift device. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention includes a lift device that moves a heavy object such as a vehicle body vertically up and down from a first or second floor to a second or first floor in a manufacturing plant such as an automobile manufacturing plant, and the lifting device. The present invention relates to a heavy goods movement system.

  In a production line of a manufacturing plant such as an automobile, a heavy object B such as a vehicle body is moved up from the first floor 1F to the second floor 2F by the lifting lift device LU, and one I on the second floor 2F. There is known a heavy goods moving system in which a work is carried out while moving on a moving line of a shape, a work is carried out by moving a certain distance, and then moved down to the original first floor 1F by a lowering lift device LD again. (See FIG. 4).

  In a conventional heavy goods movement system, a heavy object B such as a vehicle body is moved up vertically from the first floor 1F to the second floor 2F or vertically from the second floor 2F to the first floor 1F. The conventional lift device that moves downward is provided with two separate lift devices LU dedicated to ascending as shown in FIG. 5 and the lift device LD dedicated to descending as shown in FIG. 6. Was in place.

  As shown in FIG. 5, the lift device LU dedicated to ascent is provided with a support frame 11 fixed in the vertical direction, an upper sprocket 12 and a lower sprocket 13 provided on the support frame 11, and an upper sprocket 12 and a lower sprocket 13. A lifting / lowering member 14 composed of a drive chain is placed between them, and the lifting / lowering member 14 is provided so as to be movable up and down by a drive motor 15, and a horizontal lifting platform 16a on which a heavy load B can be placed on the lifting / lowering member 14a. The counter balance weight 17 is fixedly provided on the descending / lowering member 14b that moves in the opposite direction at the same time.

  Further, as shown in FIG. 6, the lift device LD dedicated to lowering includes a support frame 11 fixed in the vertical direction, an upper sprocket 12 and a lower sprocket 13 provided on the support frame 11, and an upper sprocket 12 and a lower sprocket 13. A lifting / lowering member 14 comprising a drive chain 14 is bridged between them, and the lifting / lowering member 14 is provided so as to be movable up and down by a drive motor 15 and is capable of placing a heavy object B on the lowering / lowering lifting / lowering member 14b. One loading platform 16b is fixed, and the counterbalance weight 17 is fixed to the ascending / descending member 14a that moves in the opposite direction at the same time.

  However, in the case of a conventional heavy goods movement system, the lift device used for this requires two lift devices, a lift device LU dedicated to ascending and a lift device LD dedicated to descending, each of which requires a large capacity drive motor 15. In addition, since it is necessary to install at two points on the moving line I, there is a problem related to securing the installation location and costs.

  In addition, since each lift device is exclusively for ascent and descent, a counterbalance weight is provided on the lifting member in the opposite direction to balance the weight, but the balance weight balances the weight of heavy objects such as the vehicle body. First, in order to raise or lower a heavy object such as a vehicle body placed on the loading platform of the lifting member on one side, it is necessary to rotate the lifting member with a large-capacity drive motor.

In order to solve the above-mentioned problem, a lift device that lifts and lowers a heavy object such as a vehicle body in a vertical direction,
A support frame fixed in the vertical direction, an upper sprocket and a lower sprocket are provided on the support frame, and an elevating member is circulated between the upper sprocket and the lower sprocket so as to be able to circulate and reciprocate. While being driven up and down,
Two horizontal loading platforms capable of placing heavy objects on the lifting member are fixed and provided.
The two horizontal loading platforms are two points symmetrical with respect to each other at an intermediate position between the upper and lower ends of the elevating member and an intermediate point between the two elevating members moving up and down in opposite directions. In place,
A lift device is proposed in which each cargo bed moves simultaneously in a direction opposite to each other.

In addition, in the assembly process of a manufacturing factory or the like, it has a lift device that lifts and lowers heavy objects such as vehicle bodies in the vertical direction, and is a heavy goods movement system that moves the heavy goods up and down from one floor to a floor of a different height,
A vertical support frame, an upper sprocket and a lower sprocket are provided on the support frame, and an elevating member is circulated between the upper sprocket and the lower sprocket so as to be able to circulate and reciprocate. And
Two horizontal loading platforms capable of placing heavy objects on the lifting member are fixed and provided.
The two horizontal loading platforms are two points symmetrical with respect to each other at an intermediate position between the upper and lower ends of the elevating member and an intermediate point between the two elevating members moving up and down in opposite directions. A lift device that is provided at a position, and each loading platform moves simultaneously in directions opposite to each other;
U-shaped movement that is placed on the floor where the heavy load is lowered by being lifted or lowered on one loading platform by the lifting device, and can be placed on the other loading platform of the lifting device by making a U-turn Lane and
One loading platform of the lifting device moves up when a heavy load is placed, and the other loading platform moves down when a heavy load is placed, and one loading platform has a heavy load lowered. A heavy load moving system having a lift device is proposed, which moves downward in the empty state and moves upward in the empty state where the heavy load is lowered.

  According to the present invention, in a heavy goods moving system that vertically lifts and lowers heavy objects such as a vehicle body in an assembly process such as a manufacturing factory, two lift devices that are conventionally lift-only and descend-only lift devices in one movement line. Although a single lift device was required, it was possible to move up and down with a single lift device. Therefore, there is an effect that a place for installing one lift device is vacant and the purchase cost can be saved.

  Furthermore, in the lift device according to the present invention, the two horizontal loading platforms are symmetrical between the upper end and the lower end of the elevating member and the point of symmetry between the two elevating members that move up and down. Since each loading platform is moved in the direction opposite to the lifting and lowering position, the lifting member can be lifted and lowered by a drive motor with a very small capacity and output compared to the conventional even when a heavy object such as a car body is placed on the loading platform. As a result, it has become possible to reduce the running cost of the production line by reducing power consumption.

  1 is an explanatory front view showing a lift device L according to an embodiment of the present invention, FIG. 2 is an explanatory side view, and FIG. 3 is a plan view showing a heavy goods moving system having the lift device L. FIG. To do.

  The lift device L includes a support frame 1 fixed in the vertical direction, an upper sprocket 2 provided at the upper end of the support frame 1, and a lower sprocket 3 provided at the lower end of the support frame 1. An elevating member 4 made of a drive chain is looped between the lower sprocket 3 and the lower sprocket 3 in an endless manner so as to be reciprocally movable. In this embodiment, the elevating member 4 is constituted by a drive chain, but may be constituted by a wire or a belt other than the drive chain.

  In this embodiment, the support frame 1 is provided with a plurality of plate-like bodies erected from the floor surface in the length direction of a heavy object such as a vehicle body. In this embodiment, two support frames 1 are provided, and an upper sprocket 2 is provided at the upper part of each support frame 1 and a lower sprocket 3 is provided at the lower part. 3, a lifting member 4 composed of the same number of drive chains is wound in an endless manner so as to be able to go around and reciprocate.

  Each lifting member 4 is connected to the drive shaft 5a of the drive motor 5 and moves up and down by the driving force of the lower sprocket 3 driven by the rotation of the drive motor 5. In the form, the two lower sprockets 3 are driven synchronously. The upper sprocket 2 is a driven sprocket.

  When the two lower sprockets 3 are rotated in the forward and reverse directions by the drive motor 5, the raising / lowering member 4 is synchronized and rotated halfway between the lower sprocket 3 and the upper sprocket 2, thereby raising and lowering one of the raising / lowering members 4. It is assumed that the member 4a is a lowering / lowering member 4b that moves the other lifting member 4 downward.

  The elevating member 4 is provided with two horizontal loading platforms 6a and 6b on which a heavy object B such as a vehicle body can be placed. In this embodiment, each horizontal cargo bed 6 is formed as a fork body by providing two lifting members 4 and 4 with plate-like bodies protruding in the horizontal direction at the same height. The lifting platform 6a is fixedly provided to the ascending / descending member 4a, and the descending platform 6b is provided to be fixed to the descending / lowering member 4b. The horizontal cargo beds 6a and 6b may be formed of a single plate-like body.

  The lifting platform 6a and the descending platform 6b are respectively point-symmetric with respect to an intermediate position between the upper and lower ends of the elevating member 4 and an intermediate point between the two elevating members 4a and 4b. The two positions are respectively provided. The lifting platform 6a and the descending platform 6b are simultaneously moved in the direction opposite to the ascending / descending direction in association with the ascending / descending movement of the ascending / descending member 4a and the descending / lowering member 4b.

  The lifting operation of the ascending / descending member 4a is performed by placing a heavy object B such as a vehicle body on the lifting platform 6a, and the lowering operation of the descending / lowering member 4b is performed by the heavy object B such as a vehicle body being placed on the descending loading platform 6b. It is an ascent and a descent in the mounted state. On the other hand, when the heavy object B such as the vehicle body is unloaded from the respective loading platforms 6a and 6b to become empty, the ascending / descending member 4a and the ascending loading platform 6a are rotated in order to rotate the drive motor 5 in the reverse direction and rotate the elevating member 4 in the reverse direction. Moves downward to return to the original first floor, and the lowering member 4b and the lower loading platform 6b rise to return to the original second floor.

  Next, a heavy article moving system having a lift device L according to an embodiment of the present invention will be described based on a plan explanatory view shown in FIG.

  A heavy goods movement system having a lift device L according to an embodiment of the present invention has a lift device L that lifts and lowers a heavy object B such as a vehicle body in a vertical direction, and the heavy object B is moved from one floor to floors having different heights. For example, it is a heavy goods moving system that moves up and down between the first floor and the second floor.

  In the heavy goods moving system having the lift device L according to the embodiment of the present invention, the heavy goods B such as the vehicle body carried by the moving line is placed on the lifting platform 6a from the floor 1F on the first floor by the lift device L. A U-shaped moving line U, which is provided on the second floor 2F, which is the height floor where the heavy object B is lowered, and is capable of making a U-turn and placing the heavy object on the other loading platform of the lift device; have.

  A lift device L according to an embodiment of the present invention is the lift device described in paragraphs 0013 to 0019, and includes a support frame 1 that is fixed in the vertical direction and an upper sprocket 2 that is provided at the upper end of the support frame 1. And a lower sprocket 3 provided at the lower end of the support frame 1, and a lifting member 4 made of a drive chain is spanned between the upper sprocket 2 and the lower sprocket 3 in an endless manner so as to be able to circulate and reciprocate. It is driven by a drive motor 5 provided in the lower sprocket 3.

  The elevating member 4 is provided with two horizontal loading platforms 6a and 6b on which a heavy object B such as a vehicle body can be placed. In this embodiment, each horizontal cargo bed 6 is formed as a fork body by providing two lifting members 4 and 4 with plate-like bodies protruding in the horizontal direction at the same height. The lifting platform 6a is fixedly provided to the ascending / descending member 4a, and the descending platform 6b is provided to be fixed to the descending / lowering member 4b.

  The lifting platform 6a and the descending platform 6b are respectively point-symmetric with respect to an intermediate position between the upper and lower ends of the elevating member 4 and an intermediate point between the two elevating members 4a and 4b. The two positions are respectively provided. The lifting platform 6a and the descending platform 6b are simultaneously moved in the direction opposite to the ascending / descending direction in association with the ascending / descending movement of the ascending / descending member 4a and the descending / lowering member 4b.

  The lifting operation of the ascending / descending member 4a is performed by placing a heavy object B such as a vehicle body on the lifting platform 6a, and the lowering operation of the descending / lowering member 4b is performed by the heavy object B such as a vehicle body being placed on the descending loading platform 6b. It is an ascent and a descent in the mounted state. On the other hand, when the heavy object B such as the vehicle body is unloaded from the respective loading platforms 6a and 6b to become empty, the ascending / descending member 4a and the ascending loading platform 6a are rotated in order to rotate the drive motor 5 in the reverse direction and rotate the elevating member 4 in the reverse direction. Moves downward to return to the original first floor, and the lowering member 4b and the lower loading platform 6b rise to return to the original second floor.

  Therefore, the lifting platform 6a, which is one loading platform of the lift device L, is used only for the upward movement when the heavy load B is placed on the loading platform 6, and the lowering loading platform 6b, which is the other loading platform, In the state where B is placed, it is used only for the downward movement. Further, the lifting platform 6a moves downward in an empty state where the heavy load B is lowered, and the lower loading platform 6b moves upward in an empty state where the heavy load B is lowered.

  The heavy load B moved to the floor 2F on the second floor by the lifting platform 6a and moved back by the U-shaped moving line U is placed on the loading platform 6b. A new heavy object B is placed on the loading platform 6a. In this state, the drive motor 5 is driven, the lifting platform 6a moves up, the descending platform 6b moves down, and a good weight balance is achieved by the simultaneous operation of the lifting member 4 in the opposite direction. Can be done by.

  The present invention relates to a heavy article moving system for moving a heavy article such as a vehicle body vertically moved from a first or second floor to a second or first floor in a manufacturing factory such as an automobile manufacturing factory and the like. Used as a lift device.

Front explanatory view showing a lift device according to an embodiment of the present invention Side explanatory drawing which shows the lift apparatus which is embodiment of this invention The top view which shows the heavy article movement system which has a lift apparatus which is embodiment of this invention The top view which shows the heavy article movement system which has a lift apparatus which is a prior art example Front explanatory view showing a lifting device as a conventional example Front explanatory view showing a descent lift device which is a conventional example

Explanation of symbols

L Lift device 1 Support frame 2 Upper sprocket (driven sprocket)
3 Lower sprocket (drive sprocket)
4 Lifting member (drive chain)
4a Ascending / descending member 4b Lowering / raising / lowering member 5 Drive motor 5a Drive shaft 6 Loading platform 6a Lifting platform (fork)
6b Loading platform (fork)
U U-shaped moving line 1F 1st floor 2F 2nd floor B Heavy goods (car body)

Claims (2)

A lifting device that lifts and lowers heavy objects such as a vehicle body in the vertical direction,
A support frame fixed in the vertical direction, an upper sprocket and a lower sprocket are provided on the support frame, and an elevating member is circulated between the upper sprocket and the lower sprocket so as to be able to circulate and reciprocate. While being driven up and down,
Two horizontal loading platforms capable of placing heavy objects on the lifting member are fixed and provided.
The two horizontal loading platforms are two points symmetrical with respect to each other at an intermediate position between the upper and lower ends of the elevating member and an intermediate point between the two elevating members moving up and down in opposite directions. In place,
Each lift is simultaneously moved in a direction opposite to the up and down directions. A lifting system that lifts and lowers a heavy object such as a vehicle body in a vertical direction in an assembly process such as a manufacturing factory, and moves a heavy object up and down from one floor to a floor of a different height,
A vertical support frame, an upper sprocket and a lower sprocket are provided on the support frame, and an elevating member is circulated between the upper sprocket and the lower sprocket so as to be able to circulate and reciprocate. And
Two horizontal loading platforms capable of placing heavy objects on the lifting member are fixed and provided.
The two horizontal loading platforms are two points symmetrical with respect to each other at an intermediate position between the upper and lower ends of the elevating member and an intermediate point between the two elevating members moving up and down in opposite directions. A lift device that is provided at a position, and each loading platform moves simultaneously in directions opposite to each other;
U-shaped movement that is placed on the floor where the heavy load is lowered by being lifted or lowered on one loading platform by the lifting device, and can be placed on the other loading platform of the lifting device by making a U-turn Lane and
One loading platform of the lifting device moves up when a heavy load is placed, and the other loading platform moves down when a heavy load is placed, and one loading platform has a heavy load lowered. A heavy load moving system having a lift device, wherein the load carrier moves downward in an empty state, and the other loading platform moves upward in an empty state where a heavy load is lowered.

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