JP2010100376A - Vehicle lifting device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve safety by restraining the occurrence of looseness without causing hindrance when a vehicle enters and a driver gets on and off. <P>SOLUTION: This vehicle lifting device has a table 2 for placing the vehicle and a lifting mechanism 3 for liftably operating the table in a state of a horizontal attitude. This lifting mechanism is constituted of a set of arms 31 and 32 for rotatably connecting one ends 31a and 32a to an under surface of the table in a separate state in the longitudinal direction of the table, and a horizontally moving means 30 rotatably connecting the respective other ends 31b and 32b of the set of arms and horizontally moving the respective other ends in the longitudinal direction of the table for approaching the respective other ends with the respective one ends as the rotational center when lifting the table and separating the respective other ends with the respective one ends as the rotational center when lowering the table. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a vehicle lift device, and more particularly to a vehicle lift device provided with a lifting mechanism that lifts and lowers a table on which a vehicle is placed in a horizontal posture.

  Conventionally, a vehicle lift has been installed on the floor of a maintenance place in order to inspect and maintain the vehicle. As this vehicle lift, for example, as shown in FIG. 5 (A), a pair of left and right columns 501, 502 provided in a standing state on the floor, and a pair of left and right columns 501, 502 were assembled to be freely movable up and down. A vehicle maintenance lift is known that includes carriages 503 and 504 and vehicle support arms 505 and 506 that are assembled to the carriages 503 and 504 to support the vehicle (see, for example, Patent Document 1 and Patent Document 2). .) This vehicle maintenance lift is supported by vehicle support arms 505 and 506 by chain transmission by a winding transmission device (not shown) that drives carriages 503 and 504 by a hydraulic cylinder provided in one column 501. The vehicle can be raised and lowered.

  Further, as shown in FIG. 5B, chain transmission by a winding transmission device (not shown) that drives a carriage 602 assembled to one column 601 with a hydraulic cylinder provided in the column 601 is performed. A vehicle maintenance lift that raises and lowers a vehicle supported by a vehicle support arm 603 is known (see, for example, Patent Document 3).

  As a vehicle lift, as shown in FIG. 6A, an X-type link mechanism 702 that connects a table 701 on which a vehicle is placed and a floor, and a hydraulic cylinder 703 that moves the X-type link mechanism 702 up and down. A floor-type lift provided in a pair of left and right is known (see, for example, Patent Document 4). In this floor type lift, when the hydraulic cylinder 703 is expanded and contracted, the X-type link mechanism 702 moves up and down, so that the table 701 can be moved up and down in a horizontal posture.

  Further, as shown in FIG. 6B, a drive-on plate 801 on which the vehicle is placed and an X-type link mechanism 802 for connecting the floor and a hydraulic cylinder 803 for raising and lowering the X-type link mechanism 802 are provided. 1 elevating device 800A, a board 804 provided on a drive-on plate 801 of the first elevating device 800A and having a shorter dimension than the front and rear tires of the vehicle, an X-type link mechanism 805, and a hydraulic cylinder 806. A lift for vehicle maintenance composed of the second lifting device 800B is known (see, for example, Patent Document 5 and Patent Document 6). This vehicle maintenance lift lifts the drive-on plate 801 with the first lifting device 800A to inspect the lower part of the vehicle, changes oil, etc., and lifts the board 804 to the extent that the second lifting device 800B can remove the tire. You can perform maintenance work around the tire.

  Further, as a vehicle lift, as shown in FIG. 7, a table 901 on which a vehicle is placed, and a long arm 902 in which one end 902a is rotatably connected to the table 901 and the other end 902b is slidably disposed on the floor. A short arm 903 in which the central portion of the long arm 902 and one end 903a are rotatably connected, and the other end 903b is rotatably connected to the floor, a lower surface of the table 901, and one end 903a of the short arm 903. A push rod 904 that is rotatably connected, a hydraulic cylinder 905 that rotatably connects the other end 902b of the long arm 902 and one end 903a of the short arm 903, and a sliding track of the other end 902b of the long arm 902. A vehicle maintenance lift is known that includes a rail 906 that adjusts so that the table 901 moves horizontally (for example, , See Patent Document 7.). In this vehicle maintenance lift, when the hydraulic cylinder 905 is expanded and contracted, one end 903a of the short arm 903 rotates around the other end 903b of the short arm 903, so that the long arm 902 and the push are moved according to the movement. The rod 904 can be interlocked to move the table 901 up and down in a horizontal posture.

JP 2001-106498 A JP 2001-130878 A JP-A-10-316378 JP-A-8-40697 JP 2000-272891 A Japanese Patent Laid-Open No. 2004-203602 JP 7-309598 A

  However, in the vehicle lifts of Patent Document 1, Patent Document 2 and Patent Document 3 described in the background art, since the support column stands from the floor, it may become an obstacle when the vehicle is advanced to the vehicle mounting position of the vehicle lift. After stopping the vehicle at the mounting position, there is a problem that when the driver gets in and out of the vehicle, the support becomes obstructed and the entrance door cannot be fully opened. In addition, in the vehicle lifts such as Patent Document 1 and Patent Document 2, in order to adapt two struts to the floor and adapt to heavy vehicles, the embedding depth of the struts must be about 3 m. However, there was a problem that the installation work period was long. In addition, since construction cost will become high when an installation construction period becomes long, an inexpensive vehicle lift apparatus cannot be provided.

  In addition, in the vehicle lifts of Patent Document 4, Patent Document 5, Patent Document 6, and Patent Document 7, there are a large number of links and arms that serve as elevating members. There is a possibility that rattling is likely to occur due to wear due to use. In addition, in the vehicle lifts of Patent Document 4, Patent Document 5, Patent Document 6, and Patent Document 7, there is a risk that limbs may be caught between members approaching at a link or arm connection point when the table is moved up and down. There was sex.

  Furthermore, when installing a vehicle lift in a multi-storey building with floors formed at regular intervals in the vertical direction, it must be installed between the space between the floor of the installation floor and the ceiling of the lower floor. However, since only a vehicle lift having a shallow underfloor depth that is inappropriate for heavy vehicles can be used, there is a difficulty in limiting the number of vehicles for inspection and maintenance.

  The present invention has been made in order to solve such a conventional problem, and it is possible to suppress the occurrence of metaphors without disturbing when a vehicle enters or a driver gets on and off. An object of the present invention is to provide a vehicle lift device capable of improving safety.

  Further, the present invention provides a vehicle lift device that can be installed in a multi-storey building without limiting the vehicle for inspecting and maintaining the vehicle even if the depth of the recessed portion in which the lifting mechanism is embedded is shallow. The purpose is to provide.

  A vehicle lift device that is a first aspect that achieves the above-described object is a vehicle lift device that includes a table on which a vehicle is placed and a lifting mechanism that moves the table up and down in a horizontal posture. A pair of arms whose one end is rotatably connected to the lower surface of the table in a state of being separated in the longitudinal direction of the table, and each other end of the pair of arms are rotatably connected, and the table is raised. If the table is lowered, each other end is moved closer to the center of rotation. It is comprised from the horizontal movement means to horizontally move in the longitudinal direction of a table. In this specification, “rotation” means circular movement in the forward and reverse directions.

  According to the vehicle lift device of the first aspect as described above, the table is in a horizontal posture state by simply horizontally moving the other ends of the pair of arms by the horizontal moving means of the lifting mechanism provided below the table. Since the vehicle can be moved up and down, it does not get in the way when the vehicle enters or the driver gets on and off. In addition, since the table can be moved up and down simply by horizontally moving each other end of the pair of arms, vehicles that perform inspection and maintenance of the vehicle are limited even if the embedding depth of the lifting mechanism is reduced. It can be installed in a multi-storey building. Further, since only the both ends of the pair of arms are worn portions, generation of rattle due to long-term use can be suppressed. Furthermore, since only the other ends of the pair of arms are moved horizontally, there is no place where the arms intersect, and safety can be improved.

  According to a second aspect of the present invention, in the vehicle lift device according to the first aspect, the horizontal movement means is disposed below the table and is pivotally connected to the other end of the one arm. The first screw shaft that is screwed into the first nut and has the axial direction disposed in the longitudinal direction of the table is disposed below the table, and is rotatably connected to the other end of the other arm. A second nut that is screwed into the second nut and is axially disposed in the longitudinal direction of the table, and the screw thread is reversely wound from the first screw shaft; The worm gear rotates the shaft ends facing each other of the first screw shaft and the second screw shaft, and the motor drives the worm gear.

  When the first screw shaft and the second screw shaft are rotated by driving the worm gear with a motor, the vehicle lift device according to the second aspect is configured so that the first screw shaft and the second screw shaft are Since the method of winding the screw is reversed, the first nut screwed to the first screw shaft and the second nut screwed to the second screw shaft move in opposite directions. Accordingly, the other end of the one arm connected to the first nut and the other end of the other arm connected to the second nut can be brought close to and separated from each other. When the table is ascending, the arm is moved toward the other end with each end as the center of rotation, and when the table is lowered, the other end is separated from each other with the one end as the center of rotation. Will be able to.

  According to a third aspect of the present invention, in the vehicle lift device according to the second aspect, each of the first nut and the second nut is provided with a guide roller that travels on the floor surface while supporting the nut. It is what.

  According to the vehicle lift device according to the third aspect, the first nut and the second nut to which the arm is connected can be supported by the guide roller. The load applied to the screw shaft can be reduced.

In the vehicle lift device according to a fourth aspect of the present invention, the horizontal movement means includes:
A first chain having one end pivotably connected to the other end of one arm;
The other end side of the first chain is wound around and meshed with the first chain so that the first chain can be arranged in the longitudinal direction of the table below the table, and the other end of one arm is in the horizontal direction. A first drive sprocket that reciprocates with
A second chain whose one end is pivotally connected to the other end of the other arm, and the second chain so that the second chain can be arranged in the longitudinal direction of the table below the table. A second drive sprocket wound around the end side and meshing with the second chain to reciprocate the other end of the other arm in the horizontal direction;
A drive unit that is driven by a motor so that the rotation directions of the first drive sprocket and the second drive sprocket are opposite to each other;
A guide roller is provided at each connection point between the other end of the arm and the chain and travels on the floor surface while supporting the connection point.

  In the vehicle lift device according to the fourth aspect, when the drive unit is driven by the motor, the first drive sprocket and the second drive sprocket rotate so that the rotation directions are opposite to each other. The first chain wound around one drive sprocket and the second chain wound around the second drive sprocket move in opposite directions. Accordingly, the other end of one arm connected to one end of the first chain and the other end of the other arm connected to one end of the second chain are brought close to each other while being supported by the guide roller. Therefore, when the table is raised, the pair of arms makes each other end close to the center of rotation, and when the table is lowered, each arm is turned. Each other end can be separated from the center.

  According to a fifth aspect of the present invention, in the vehicle lift device according to the first aspect, the horizontal movement means is disposed below the table, the cylinder body is rotatably connected to the other end of one arm, and the rod tip The telescopic cylinder is rotatably connected to the other end of the other arm, the other end of the arm, the cylinder body and the rod tip, and the floor in a state of supporting the connection point. It is comprised from the guide roller which drive | works a surface.

  According to the vehicle lifting apparatus of the fifth aspect, when the cylinder operation is performed so that the telescopic cylinder projects the rod tip, the other end of one arm connected to the cylinder body and the rod tip One arm connected to the cylinder body when the telescopic cylinder is moved away from the other end of the other arm connected to the part while being supported by the guide roller and the telescopic cylinder is retracted. The other end of the arm and the other end of the other arm connected to the tip of the rod can be approached while being supported by the guide roller. Each end can be approached with one end as the center of rotation, and when the table is descending, the other end can be spaced apart with each end as the center of rotation. So as to.

  According to a sixth aspect of the present invention, in the vehicle lift device according to any one of the first to fifth aspects, the pair of arms and the horizontal movement means are a pair of left and right in the width direction of the table. It is provided. According to a seventh aspect of the present invention, in the vehicle lift device according to the sixth aspect, the table is provided in each of the pair of arms provided in the pair of left and right. According to the vehicle lift device of the sixth aspect and the seventh aspect as described above, it is easy to provide a predetermined space between a pair of lifting mechanisms constituted by a pair of arms and horizontal moving means. This makes it easier to perform inspections and maintenance from below the vehicle.

  According to an eighth aspect of the present invention, in the vehicle lift device according to any one of the first to seventh aspects, a guide rail for running the guide roller is provided on the floor surface. . According to the vehicle lift device of the eighth aspect as described above, the traveling direction of the guide roller can be guided by the guide rail, so that the pair of arms can be operated in a stable state.

  According to a ninth aspect of the present invention, in the vehicle lift device according to any one of the first to eighth aspects, when the table is lowered, the vehicle placement surface of the table is flush with the floor surface. As is the case, an elevating mechanism is stored in a recess dug into the floor. According to the vehicle lift device according to the ninth aspect as described above, even if the lifting mechanism is stored under the floor, the lifting mechanism can be operated without any trouble even if the depth of the recessed portion in which the lifting mechanism is embedded is shallow. Therefore, it is possible to install the vehicle in a multi-storey building without limiting the vehicle for inspecting and maintaining the vehicle.

  According to the vehicle lift device of the present invention, it is possible to suppress the occurrence of metamorphosis and improve safety without disturbing when the vehicle enters or the driver gets on and off. Moreover, according to the vehicle lift device of the present invention, even if the depth of the recessed portion in which the lifting mechanism is embedded is shallow, the vehicle for inspecting and maintaining the vehicle is not limited and can be installed in a multi-storey building. become.

  The best mode for carrying out the vehicle lift device of the present invention will be described below with reference to the drawings.

  As shown in FIGS. 1A and 1B, the vehicle lift device according to the present invention includes a table 2 on which a vehicle is placed, and a lifting mechanism 3 that lifts and lowers the table 2 in a horizontal posture. The elevating mechanism 3 includes a pair of arms 31 and 32 whose one ends 31 a and 32 a are rotatably connected to the lower surface of the table 2 in a state of being separated in the longitudinal direction LD of the table 2, and a pair of arms 31. 32, the other ends 31b, 32b of the table 2 are pivotably connected, and when the table 2 is lifted, the other ends 31b, 32b are brought close to each other with the one ends 31a, 32a as the rotation center. Is moved horizontally in the longitudinal direction LD of the table 2 in order to separate the other ends 31b, 32b with the one ends 31a, 32a as the rotation center. And means 30. The longitudinal direction LD of the table 2 is the same direction as the front-rear direction of the vehicle when the vehicle is placed. Further, the pair of arms 31 and 32 is formed in a ladder shape that can increase the strength of the structural member, for example.

  The horizontal moving means 30 is disposed below the table 2 and is screwed into the first nut 33 and the first nut 33 rotatably connected to the other end 31b of the one arm 31. A first screw shaft 34 whose axial direction is disposed in the longitudinal direction LD thereof, and a second nut 35 disposed below the table 2 and rotatably connected to the other end 32b of the other arm 32. The second screw shaft 36 is screwed into the second nut 35 and the axial direction is arranged in the longitudinal direction LD of the table 2 and the first screw shaft 34 is reversely wound up with the screw. The first screw shaft 34 and the second screw shaft 36 are constituted by a worm gear 37 that rotates opposite shaft ends and a motor M1 that drives the worm gear 37.

  The combination of the first nut 33 and the first screw shaft 34 and the second nut 35 and the second screw shaft 36 has less friction loss due to the rolling contact between the screw and the ball, and has good transmission efficiency. Although the obtained ball screw is preferably used, the present invention is not limited to this, and a trapezoidal screw or a square screw suitable for transmitting force may be used.

  The first nut 33 and the second nut 35 are provided with guide rollers 38 that run on the floor surface while supporting the nuts 33 and 35, respectively. The guide roller 38 is provided at each end of the first nut 33 and the second nut 35. If the guide rail 39 for running the guide roller 38 is installed on the floor surface, the running direction of the guide roller 38 can be guided by the guide rail 39, so that the pair of arms 31, 32 can be operated in a stable state. Can do. The shape of the guide rail 39 is, for example, a U-shape, and the guide roller 38 runs in the recess. Thus, since the first nut 33 and the second nut 35 to which the arm is connected can be supported by the guide roller 38, the load applied to the first screw shaft 34 and the second screw shaft 36 is reduced. Can be reduced.

  In the worm gear 37, the worm 37a is fixed to the rotation shaft of the motor M1, and the worm wheel 37b that meshes with the worm 37a is fixed to the opposing shaft ends of the first screw shaft 34 and the second screw shaft 36. . In addition, in order to make the connecting point of the pair of arms 31 and 32 rotatable, by using a joint using a bush or the like for the sliding portion, one end 31a and 32a is connected to the lower surface of the table 2, The other ends 31 b and 32 b are connected to the first nut 33 and the second nut 35.

  A pair of arms 31 and 32 and the horizontal moving means 30 of such an elevating mechanism 3 are provided in a pair of left and right in the width direction WD of the table 2 as shown in FIG. The table 2 is provided on each of a pair of arms 31 and 32 provided as a pair of left and right. By providing a pair of left and right arms 31, 32, horizontal moving means 30, and table 2 in this way, it becomes easy to provide a predetermined space between the pair of lifting mechanisms 3, 3, so that the lower part of the vehicle It is easy to perform inspection and maintenance from the start. The table 2 may be connected to a pair of arms 31 and 32 provided in a pair of left and right as long as the table 2 can be easily inspected and maintained from below the vehicle.

  Further, when the table 2 is lowered, the elevating mechanism 3 is stored in the concave portion CP dug into the floor so that the vehicle placement surface of the table 2 is flush with the floor surface. Even if the mechanism 3 is stored under the floor, the lifting mechanism 3 can be operated without any problems even if the depth of the concave portion CP in which the lifting mechanism 3 is embedded is shallow, so that vehicles for inspecting and maintaining the vehicle are limited. Installation in a multi-story building is possible without being done. In this case, the guide roller 38 runs on the bottom of the recess CP. However, when the guide rail 39 is used, the guide rail 39 is installed on the bottom of the recess CP.

  The operation of the vehicle lift device 1 configured as described above will be described. In FIG. 1A, the movement change of the table 2, the pair of arms 31, 32, the first nut 33, the second nut 35, and the guide roller 38 is a dotted line when the table 2 is at the top dead center. The bottom dead center is indicated by a thin solid line, and the three stages from the top dead center to the bottom dead center are indicated by a one-dot chain line from the top, a solid solid line, and a two-dot chain line. FIG. 1 (B) is a diagram when the table 2 in FIG. 1 (A) is stopped at the position of the bold line by the solid line.

  When the worm gear 37 is driven by the motor M1 so as to move to the top dead center in a state where the table 2 is located at the bottom dead center, the first screw shaft 34 and the second screw shaft 36 rotate. The first nut 33 that is screwed to the first screw shaft 34 and the second nut 35 that is screwed to the second screw shaft 36 start moving. The first screw shaft 34 and the second screw 35 Since the shaft 36 is reversely wound, the first nut 33 and the second nut 35 move in opposite directions. Accordingly, the other end 31b of one arm 31 connected to the first nut 33 and the other end 32b of the other arm 32 connected to the second nut 35 move so as to approach each other. Therefore, the pair of arms 31 and 32 can raise the table 2. When the worm gear 37 is driven by the motor M1 so that the table 2 moved to the top dead center is moved to the bottom dead center, the first screw shaft 34 and the second screw shaft 36 are moved to the first nut 33 and Since the second nut 35 is moved apart, the table 2 can be lowered by the pair of arms 31 and 32.

  As described above, the table 2 is moved up and down in a horizontal posture only by horizontally moving the other ends 31 b and 32 b of the pair of arms 31 and 32 by the horizontal moving means 30 of the lifting mechanism 3 provided below the table 2. Therefore, the vehicle does not get in the way when the vehicle enters or the driver gets on and off. Further, since the table 2 can be lifted and lowered simply by horizontally moving the other ends 31b and 32b of the pair of arms 31 and 32, the vehicle is inspected and maintained even if the embedding depth of the lifting mechanism 3 is reduced. It is possible to install in a multi-storey building without limiting the vehicle that performs. Further, since only the both ends 31b and 32b of the pair of arms 31 and 32 are worn portions, occurrence of rattling due to long-term use can be suppressed. Furthermore, since only the other ends 31b and 32b of the pair of arms 31 and 32 are moved horizontally, there is no place where the arms intersect, and safety can be improved.

  In addition, the pair of left and right horizontal moving means 30 and 30 described above are driven by one motor M1, but the present invention is not limited to this, and as shown in FIG. You may make it drive with the motors M2 and M3. In this case, the control circuit 4 performs control so that the motors M2 and M3 rotate synchronously, whereby the pair of left and right horizontal moving units 30 and 30 can perform the same operation. Therefore, the table 2 can be moved up and down in a horizontal posture. 2 are denoted by the same reference numerals as those in FIGS. 1A and 1B, and description thereof is omitted.

  In addition, as shown in FIG. 3, the pair of arms 31 and 32 of the horizontal moving means 30 is bent at the other end 31b and 32b in the outward direction so that the table 2 is at bottom dead center. When the table 2 is raised from the top dead center to the top dead center, the load applied to the pair of arms 31 and 32 is dispersed because the table 2 becomes the top dead center in a state where the distance between the first nut 33 and the second nut 35 is wide to some extent. Thus, the pair of arms 31 and 32 can be strung. Note that the pair of left and right horizontal moving means 30 and 30 shown in FIG. 3 are given the same reference numerals to the same elements as the horizontal moving means 30 shown in FIG.

  Further, the horizontal moving means of the elevating mechanism 3 is not limited to the horizontal moving means 30 described above, but may be a horizontal moving means 300 shown in FIG. 4 (A) or a horizontal moving means 350 shown in FIG. 4 (B).

  In the vehicle lift device 10 to which the horizontal moving means 300 shown in FIG. 4A is applied, one arm 31 is driven by a chain transmission device 303 by a first chain 301 and a first drive sprocket 302, and the second chain 31 is driven. The other arm 32 can be driven by the chain transmission device 306 by the chain 304 and the second drive sprocket 305. In the drawing, the first drive sprocket 302 is located on the right side, and the second drive sprocket 305 is located on the left side.

  The first chain 301 has one end 301 a rotatably connected to the other end 31 b of one arm 31, and the second chain 304 has one end 304 a rotatably connected to the other end 32 b of the other arm 32. Has been. In addition, the first drive sprocket 302 is wound around the other end 301b of the first chain 301 so that the first chain 301 can be arranged in the longitudinal direction LD of the table 2 below the table 2. It is provided so that it can mesh with the first chain 301 and reciprocate the other end 31b of one arm 31 in the horizontal direction. The second drive sprocket 305 is wound around the other end 304b side of the second chain 304 so that the second chain 304 can be arranged in the longitudinal direction LD of the table 2 below the table 2. The other end 32b of the other arm 32 is provided so as to reciprocate in the horizontal direction.

  Further, the horizontal movement means 300 includes a drive unit (not shown) that is driven by a motor so that the rotation directions of the first drive sprocket 302 and the second drive sprocket 305 are opposite to each other. As the drive unit, when the first drive sprocket 302 and the second drive sprocket 305 are driven by one motor, the first drive sprocket 302 and the second drive sprocket 305 are synchronously rotated by a gear device. . Further, when the first drive sprocket 302 and the second drive sprocket 305 are driven by two motors, respectively, the control circuit controls the two motors so as to rotate synchronously.

  Furthermore, it is provided at the connection point of the other end 31b of the one arm 31 and the first chain 301 and the connection point of the other end 32b of the other arm 32 and the second chain 304, and supports the connection point. And a guide roller 307 traveling on the floor surface. By installing the guide rail 308 for running the guide roller 307 on the floor, the same operation and effect as the horizontal moving means 30 described above can be obtained.

  Note that the connecting points at the other ends 31b and 32b of the pair of arms 31 and 32 of the horizontal moving means 300 are similar to the horizontal moving means 30 described above in order to be able to rotate, such as bearings on the sliding portion. The other end 31b is connected to the first chain 301, and the other end 32b is connected to the second chain 304.

  The operation of the vehicle lift device 10 configured as described above will be described. With the table 2 positioned at the bottom dead center, the drive unit drives the first drive sprocket 302 and the second drive sprocket 305 so that the rotational directions are opposite to each other so as to move to the top dead center. The first drive sprocket 302 rotates clockwise in the figure to move the first chain 301 to the right, and the second drive sprocket 305 rotates counterclockwise in the figure to the second chain 304. The other end 31b of one arm 31 connected to the first chain 301 and the other end 32b of the other arm 32 connected to the second chain 304 are respectively one end 31a, The pair of arms 31 and 32 can raise the table 2 because it moves while being supported by the guide roller 307 so as to approach the rotation center 32a.

  Further, when the driving unit drives the first drive sprocket 302 and the second drive sprocket 305 so that the rotation directions are opposite to each other so that the table 2 moved to the top dead center is moved to the bottom dead center, The first drive sprocket 302 rotates counterclockwise in the figure to move the first chain 301 to the left, and the second drive sprocket 305 rotates in the clockwise direction in the figure to move the second chain 304 to the right. The other end 31b of one arm 31 connected to the first chain 301 and the other end 32b of the other arm 32 connected to the second chain 304 are The pair of arms 31 and 32 moves the table 2 because the weights move while being supported by the guide roller 307 so as to be separated from each other with the one ends 31 a and 32 a as the rotation center. It is possible to make later.

  Therefore, the vehicle lift device 10 can obtain the same effect as the vehicle lift device 1 described above.

  Also, the vehicle lift device 100 to which the horizontal moving means 350 shown in FIG. 4B is applied is disposed below the table 2, and the cylinder body 351 a is rotatably connected to the other end 31 b of one arm 31. The rod tip 351b is provided with a telescopic cylinder 351 rotatably connected to the other end 32b of the other arm 32. In this telescopic cylinder 351, the rod expands and contracts with a two-stage stroke, and the axial mounting space can be reduced. The horizontal moving means 350 is provided at a connection point between the other end 31b of one arm 31 and the cylinder body 351a, and a connection point between the other end 32b of the other arm 32 and the rod tip 351b. A guide roller 352 that travels on the floor surface in a supported state is provided. By installing the guide rail 353 for running the guide roller 352 on the floor, the same operation and effect as the above-described horizontal moving means 30 can be obtained.

  Note that the connecting points at the other ends 31b and 32b of the pair of arms 31 and 32 of the horizontal moving means 350 are similar to the horizontal moving means 30 described above in order to be able to rotate, such as bearings on the sliding portion. The other end 31b is connected to the cylinder body 351a, and the other end 32b is connected to the rod tip 351b.

  The operation of the vehicle lift device 100 configured as described above will be described. When the telescopic cylinder 351 is driven so as to move to the top dead center while the table 2 is located at the bottom dead center, the cylinder operation starts so as to retract the rod tip 351b. The other end 31b of the connected arm 31 and the other end 32b of the other arm 32 connected to the rod tip 351b are brought close to each other while being supported by the guide roller 352. By this cylinder operation, the pair of arms 31 and 32 can raise the table 2.

  Further, when the cylinder operation is performed so that the telescopic cylinder 351 protrudes from the rod front end portion 351b, the other end 31b of one arm 31 connected to the cylinder body 351a and the other end connected to the rod front end portion 351b. The other end 32 b of the arm 32 is separated while being supported by the guide roller 352. By this cylinder operation, the pair of arms 31 and 32 can lower the table 2.

  Therefore, the vehicle lift device 100 can obtain the same effects as the vehicle lift device 1 described above.

  Similar to the above-described vehicle lift device 1, the vehicle lift devices 10, 100 obtain the same operation and effect as the vehicle lift device 1 by providing the lifting mechanism 3 as a pair on the left and right sides in the width direction WD of the table 2. Can do. Also, the vehicle lift devices 10 and 100 are dug into the floor so that the vehicle mounting surface of the table 2 is flush with the floor surface when the table 2 is lowered, as in the vehicle lift device 1 described above. By configuring so that the elevating mechanism 3 can be stored in the recessed portion CP, the same operations and effects as the vehicle lift device 1 can be obtained.

  Although the present invention has been described with the specific embodiments shown in the drawings, the present invention is not limited to the embodiments shown in the drawings, and is known so far as long as the effects of the present invention are achieved. It goes without saying that any configuration can be adopted.

In the preferred embodiment of the vehicle lift device of the present invention, (A) is a front view and (B) is a top view. It is a top view which shows the other example of preferable embodiment by the vehicle lift apparatus of this invention. It is a top view which shows the other example of preferable embodiment by the vehicle lift apparatus of this invention. (A), (B) is a figure which shows the other preferable embodiment of the vehicle lift apparatus of this invention. (A), (B) is explanatory drawing which shows the conventional vehicle lift. (A), (B) is explanatory drawing which shows the conventional vehicle lift. It is explanatory drawing which shows the conventional vehicle lift.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1, 10, 100 ... Vehicle lift device 2 ... Table 3 ... Elevating mechanism 31, 32 ... One set of arms 31a, 32a ... One end 31b, 32b ... The other end 30 ... Horizontal moving means 33 ... First nut 34 …… First screw shaft 35 …… Second nut 36 …… Second screw shaft 37 …… Worm gear 38 …… Guide roller 39 …… Guide rail M1, M2, M3 …… Motor 300 …… Horizontal movement means 301 …… First chain 302 …… First drive sprocket 304 …… Second chain 305 …… Second drive sprocket 306 …… Guide roller 307 …… Guide rail 350 …… Horizontal movement Means 351 …… Telescopic cylinder 351a …… Cylinder body 351b …… Rod end 352 …… Guide roller 353 …… Guide rail CP ...... Concavity in the floor

Claims (9)

In a vehicle lift device comprising a table for placing a vehicle, and an elevating mechanism for elevating and lowering the table in a horizontal posture state,
The lifting mechanism is
A pair of arms, one end of which is rotatably connected to the lower surface of the table in a state of being separated in the longitudinal direction of the table;
When the other ends of the pair of arms are rotatably connected and the table is raised, the other ends are brought close to each other with the one end as a rotation center, and the table is lowered. And a horizontal movement means for horizontally moving the other ends in the longitudinal direction of the table in order to separate the other ends from each other with the one end as a rotation center. Vehicle lift device. The horizontal moving means includes
A first nut disposed below the table and pivotally connected to the other end of one of the arms;
A first screw shaft screwed into the first nut and having an axial direction disposed in a longitudinal direction of the table;
A second nut disposed below the table and rotatably connected to the other end of the other arm;
A second screw shaft that is screwed into the second nut, the axial direction of the table being arranged in the longitudinal direction of the table, and the winding direction of the screw is opposite to that of the first screw shaft;
A worm gear that pivots opposite shaft ends of the first screw shaft and the second screw shaft;
2. The vehicle lift device according to claim 1, wherein the vehicle lift device comprises a motor for driving the worm gear.   The vehicle lift device according to claim 2, wherein each of the first nut and the second nut is provided with a guide roller that travels on a floor surface while the nut is supported. The horizontal moving means includes
A first chain having one end pivotably coupled to the other end of one of the arms;
The other end of one of the arms is wound around the other end of the first chain and meshed with the first chain so that the first chain can be arranged in the longitudinal direction of the table below the table. A first drive sprocket that reciprocates the end in a horizontal direction;
A second chain having one end pivotably coupled to the other end of the other arm;
The other end of the second chain is wound around and engaged with the second chain so that the second chain can be arranged in the longitudinal direction of the table below the table. A second drive sprocket that reciprocates the end in a horizontal direction;
A drive unit that is driven by a motor so that the rotation directions of the first drive sprocket and the second drive sprocket are opposite directions;
The vehicle lift according to claim 1, further comprising a guide roller that is provided at each connection point between the other end of the arm and the chain and that travels on the floor surface while supporting the connection point. apparatus. The horizontal moving means includes
A telescopic cylinder disposed below the table, wherein a cylinder body is rotatably connected to the other end of one of the arms, and a rod tip is rotatably connected to the other end of the other arm. When,
A guide roller is provided at each connection point between the other end of the arm and the cylinder body and the rod tip, and travels on the floor surface while supporting the connection point. The vehicle lift device according to claim 1.   The vehicle lift device according to any one of claims 1 to 5, wherein the pair of arms and the horizontal moving means are provided in a pair of left and right in the width direction of the table.   The vehicle lift device according to claim 6, wherein the table is provided on each of the pair of arms provided in the pair of left and right.   The vehicle lift device according to any one of claims 1 to 7, wherein a guide rail for running the guide roller is installed on a floor surface.   2. The lifting mechanism is housed in a recess dug into the floor so that the vehicle placement surface of the table is flush with the floor when the table is lowered. The vehicle lift device according to any one of claims 8 to 8.

Images