JP3235296U - Vehicle maintenance lift - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicle maintenance lift capable of effectively preventing the occurrence of an inward fall of a drive-on plate while suppressing an increase in the weight of the entire apparatus. A drive in a vehicle maintenance lift 1 including a pair of left and right drive-on plates 10, an X-link mechanism 30 for raising and lowering them, and a jack beam 40 erected between the pair of drive-on plates 10. The on-plate 10 includes an upper surface portion 11 extending in the front-rear direction and a pair of side surface portions 12 hanging along both left and right sides of the upper surface portion 11, and the drive-on plate 10 is an X-link. A reinforcing plate erected between a pair of side surface portions 12 below the upper surface portion 11 is provided on the rear side of the central portion 10c corresponding to the front-rear movement range of the intersection portion 30c in the mechanism 30, and the upper surface portion 11 and a pair. A box-shaped structure is formed by the side surface portion 12 and the reinforcing plate. [Selection diagram] Fig. 1

Description

The present invention relates to a vehicle maintenance lift.

Conventionally, in a pit dug in the ground, a pair of left and right drive-on plates on which a vehicle can get in are supported by an elevating device consisting of an X-type link mechanism and a hydraulic cylinder, and the upper surface of the drive-on plates is the ground. A drive-on type vehicle maintenance lift has been proposed that lifts up the drive-on plate from the same lower limit position by operating the lifting device to enable inspection of the underside of the vehicle, oil change, and the like (for example, Patent Documents). See 1st and 2nd grade).

Such a vehicle maintenance lift is provided with a jack beam that is erected between a pair of drive-on plates so that the pedestal can be raised and lowered, and the vehicle is lifted up with the wheels free for work. It is also possible to do.

Jitsufuku No. 7-30632 Gazette Japanese Patent No. 6539232

In recent years, various types of large vehicles have been operated, and there is an increasing need for vehicle maintenance lifts that can handle heavier vehicles. When a particularly heavy vehicle is placed on the cradle of the jacking beam in the vehicle maintenance lift, the inside of each of the pair of drive-on plates on which the jacking beam is erected receives a large load, and the inside of the drive-on plate is subjected to a large load. Is more likely to fall down from the outside and incline in an inverted C shape, so-called inward collapse, and it is necessary to prevent this. On the other hand, if the thickness of the drive-on plate or the link of the X-link mechanism is increased, there is a problem that the weight of the entire device is increased.

An object of the present invention is to provide a vehicle maintenance lift capable of effectively preventing the occurrence of an inward fall of a drive-on plate while suppressing an increase in the weight of the entire device.

(1) The vehicle maintenance lift according to the present invention is rotatably pivotally attached to a pair of left and right drive-on plates on which the wheels of the vehicle are placed and a pair of link members crossing each other at the center in the longitudinal direction. The front end portions thereof are pivotally fixed and the rear end portion can be slidable, and a cylinder is arranged on the front side with respect to the intersection of the pair of link members, and the pair of links is driven by the driving force thereof. It is provided with an X-link mechanism that raises and lowers each drive-on plate by opening and closing a member, and a jack beam that is installed between the pair of drive-on plates and raises and lowers a pedestal on which the bottom of a vehicle is placed.

The vehicle maintenance lift includes an upper surface portion extending in the front-rear direction and a pair of side surface portions hanging along both left and right sides of the upper surface portion. The drive-on plate includes a reinforcing plate erected between the pair of side surface portions below the upper surface portion on the rear side of the central portion corresponding to the front-rear movement range of the intersection in the X-link mechanism. A box-shaped structure is formed by the upper surface portion, the pair of side surface portions, and the reinforcing plate.

According to this configuration, the upper surface portion is provided with a reinforcing plate erected between the pair of side surface portions below the upper surface portion on the rear side where the torsional rigidity is lower than that on the front side where the cylinder is provided in the drive-on plate. Since the box-shaped structure is formed by the pair of side parts and the reinforcing plate, the torsional rigidity of the drive-on plate is improved, and the drive-on plate when the bottom of the vehicle is placed on the pedestal of the jacking beam Inward fall is prevented. That is, it is possible to provide a vehicle maintenance lift that can effectively prevent the drive-on-plate from falling inward while suppressing the weight increase of the entire device.

(2) The drive-on plate further includes a plurality of cross beam members erected between the pair of side surface portions at intervals in the front-rear direction, and the reinforcing plate is provided in the front-rear direction with respect to the plurality of cross beam members. It is arranged so as to straddle and is fixed to the lower end of each of the cross beam members.

According to this configuration, since the reinforcing plate is arranged so as to straddle the plurality of cross beam members provided in the drive-on plate in the front-rear direction, a plurality of box-shaped structures are formed, so that the drive-on plate is further further formed. The torsional rigidity of the is improved.

(3) The drive-on plate has a guide rail having a predetermined length in the front-rear direction on the rear side of the central portion, and one of the pair of link members is attached to a pivot portion provided on an installation surface. The front end is pivotally fixed and the rear end is slidably connected to the guide rail, and the reinforcing plate is at least partially overlapped with the guide rail in the front-rear direction. It is arranged like this.

According to this configuration, the reinforcing plate is arranged so as to overlap at least a part of the guide rail of the drive-on plate in the front-rear direction, and the deformation of the drive-on plate in the portion is prevented. By applying a uniform load to one side via the guide rail, the drive-on plate is effectively prevented from falling inward.

(4) The reinforcing plate is arranged so as to overlap the guide rail by more than half in the front-rear direction.

According to this configuration, inward tilting of the drive-on plate is further effectively prevented.

(5) The upper surface of the drive-on plate is provided with an opening in a predetermined range in the front-rear direction including the central portion, and the opening includes a board on which the bottom of the vehicle is placed and the board. A small lift having an elevating mechanism for elevating and lowering is arranged, and the reinforcing plate is arranged on the rear side of the opening.

According to this configuration, in a configuration in which an opening is provided on the upper surface of the drive-on plate and a small lift is arranged, the torsional rigidity of the drive-on plate is improved on the rear side of the opening to improve the drive-on plate. It is possible to effectively prevent the occurrence of internal collapse. Further, since the elevating mechanism of the small lift does not interfere with the reinforcing plate when descending, the height when descending can be kept low.

(6) On at least one of the pair of the side surface portions, a high-rigidity portion having a higher rigidity than the other portions of the side surface portions is provided so as to overlap with the entire opening in the front-rear direction, and the reinforcing plate and the said At least a part of the high-rigidity portion is superimposed in the front-rear direction.

According to this configuration, since at least a part of the reinforcing plate and the high-rigidity portion are overlapped in the front-rear direction, it is possible to prevent a portion having low rigidity from being partially generated from the opening to the rear side.

It is a perspective view which shows the whole structure of the vehicle maintenance lift which concerns on embodiment of this invention in the small lift ascending state. It is a side view which shows the whole composition of the lift for vehicle maintenance in the small lift ascending state. It is a side view which shows the whole structure of the lift for vehicle maintenance in the jacking beam rising state. FIG. 3 is a rear view of the vehicle maintenance lift shown in FIG. 3 as viewed from the rear side. It is a partially enlarged view which shows the V-line arrow view part of FIG. 4 enlarged. It is a perspective view which saw the drive-on-plate from the bottom side. It is a bottom view of the drive-on-plate. It is sectional drawing which shows the VIII-VIII line cross section of the drive-on-plate of FIG. It is an end view which shows the end face which cut the drive-on-plate of FIG. 7 by IX-IX line. It is an end view which shows the end face which cut the drive-on-plate of FIG. 7 by X-ray. It is an end view which shows the end face which cut the drive-on-plate of FIG. 7 by the XI-XI line.

Hereinafter, an embodiment of a vehicle maintenance lift to which the present invention is applied will be described with reference to the drawings.

<Overall configuration of vehicle maintenance lift 1>
First, the overall configuration of the vehicle maintenance lift 1 according to the present embodiment will be described with reference to FIGS. 1 to 5. FIG. 1 is a perspective view showing the overall configuration of the vehicle maintenance lift 1 in an elevated state of the small lift 20, and FIG. 2 is a side view thereof. FIG. 3 is a side view showing the entire configuration of the vehicle maintenance lift 1 in an elevated state of the jacking beam 40, FIG. 4 is a rear view seen from the rear side, and FIG. 5 is an enlarged view of the V-line arrow portion of FIG. It is a partially enlarged view which shows.

The vehicle maintenance lift 1 includes a pair of left and right drive-on plates 10 and 10 on which the left and right wheels of the vehicle are placed, each X-link mechanism 30 and 30 for raising and lowering each drive-on plate 10 and 10, and a pair of drives. It is configured to include a pair of front and rear jacking beams 40, 40 erected between the on-plates 10 and 10, and is installed in a pit P dug in the floor F.

The drive-on plate 10 is a rectangular plate-shaped member in a plan view having a dimension longer than that between the front and rear wheels of the vehicle. The drive-on plate 10 includes a small lift 20 mounted in an opening 10k at the center in the longitudinal direction (front-back direction). Further, wheel chocks 10s are provided in the vicinity of the front end and the vicinity of the rear end of the drive-on plate 10 so as to freely appear and disappear. The specific configuration of the drive-on plate 10 will be described later.

The X-link mechanism 30 includes a pair of left and right outer links 31, an inner link 32 arranged inside each outer link 31 in the left-right direction, and a cylinder 33.

The front end of the outer link 31 is rotatably pivotally fixed to the base pivot 51 in the pit P, and the roller provided at the rear end is slid back and forth to the guide rail 10r of the drive-on plate 10. It is movably connected.

On the other hand, the inner link 32 intersects with the outer link 31 at the intersection 30c at the center in the longitudinal direction and pivotally attaches to each other so as to be rotatable. Further, the inner link 32 is pivotally fixed to the drive-on plate 10 at the front end, and the roller 32r provided at the rear end is slidably connected to the base guide rail 52 in the pit P in the front-rear direction. is doing.

By providing the above configuration, the X-link mechanisms 30 and 30 can be opened and closed by synchronizing the left and right cylinders 33 and 33 to expand and contract, and the drive-on plates 10 and 10 can be moved up and down in a horizontal posture. ..

The jacking beam 40 is a kind of so-called freewheel lift for freewheeling the wheels and raising the vehicle, and is a lift device installed between a pair of drive-on plates 10 and 10 and movable in the front-rear direction. Is. The jacking beam 40 includes a pedestal 41, a base 42, and an elevating mechanism 43.

The pedestal 41 is a member on which the bottom of the vehicle is placed, and its length in the left-right direction is about ten to several tens of mm shorter than the distance between the pair of drive-on plates 10 and 10, and its length in the front-rear direction. It is a plate-shaped member having a rectangular shape in a plan view having a length of, for example, about 300 mm.

As shown in FIG. 5, the base 42 is provided with rollers 42a and 42a projecting from both left and right ends so as to be rotatable. The rollers 42a and 42a on both the left and right sides are slidably connected to each inner rail 10t provided on the inner side surface portion 12 of each drive-on plate 10 in the front-rear direction. As a result, the jacking beam 40 is erected between the pair of drive-on plates 10 and 10 and can move in the front-rear direction. In order to support the vehicle in the front-rear direction, each jack beam 40 is moved to an appropriate position in the front-rear direction between the pair of drive-on plates 10 and 10 to move the vehicle up and down. Note that FIG. 1 shows a state in which the jacking beams 40 and 40 are moved toward the front ends of the drive-on plates 10 and 10, and FIG. 3 shows a state in which the jacking beams 40 and 40 are moved to appropriate positions in the front-rear direction. When the pedestal 41 of the jacking beam 40 mounts the bottom of the vehicle, a load is applied to the position indicated by the arrow in FIG. 5 via the roller 42a and the inner rail 10t. That is, in the drive-on plate 10, the load is biased toward the inner end portion, and a state in which the inner side of the drive-on plate 10 is inclined downward (so-called inward tilting) is likely to occur. In the embodiment, as will be described later, the torsional rigidity is improved by forming a box-shaped structure to prevent the occurrence of inward tilting.

The elevating mechanism 43 is installed on the base 42. The elevating mechanism 43 includes an X-link mechanism in which a pair of link members intersect in an X-shape at the center in the left-right direction, and is opened and closed by the driving force of a cylinder arranged on the left or right side of the intersection to open and close the pedestal. Move 41 up and down in a horizontal position.

<Structure of drive-on plate 10>
Next, the details of the configuration of the drive-on plate 10 will be described with reference to FIGS. 7 to 11. FIG. 7 is a bottom view of the drive-on plate 10. 8 is a cross-sectional view showing a cross section of the drive-on plate of FIG. 7 along line VIII-VIII, FIG. 9 is an end face view showing an end face cut by line IX-IX, and FIG. 10 is an end face cut by line X-X. FIG. 11 is an end view showing an end face cut along the XI-XI line. The drive-on plate 10 includes an upper surface portion 11 extending in the front-rear direction and a pair of side surface portions 12 and 12 hanging along both left and right sides of the upper surface portion 11. Hereinafter, in the drive-on plate 10, the region corresponding to the front-back movement range of the intersection portion 30c in the X-link mechanisms 30 and 30 is referred to as a central portion 10c. Since the crossing portion 30c moves back and forth as the X-link mechanism 30 opens and closes, the central portion 10c has a width in the front-back direction. That is, the central portion 10c refers to a region corresponding to the rearmost position (at the lower limit of the drive-on plate 10) and the frontmost position (at the upper limit of the drive-on plate 10) of the intersection 30c.

Further, the drive-on plate 10 includes cross beam members 14, 14, 14 which are a plurality (three) plate members erected between the pair of side surface portions 12, 12 at intervals in the front-rear direction. Further, the drive-on plate 10 has a guide rail 10r having a predetermined length in the front-rear direction on the rear side of the central portion 10c, and the rear end portion of the outer link 31 is slidably connected to the guide rail 10r. ing.

The drive-on plate 10 includes a reinforcing plate 13 erected between a pair of side surface portions 12, 12 below the upper surface portion 11 on the rear side of the central portion 10c, and the upper surface portion 11, the pair of side surface portions 12, A box-shaped structure is formed by the 12 and the reinforcing plate 13. More specifically, the reinforcing plate 13 is arranged so as to straddle the plurality (three) cross beam members 14, 14, 14 in the front-rear direction and is fixed to the lower end of each cross beam member 14. The reinforcing plate 13 is arranged so that at least a part thereof overlaps with the guide rail 10r in the front-rear direction. The reinforcing plate 13 is arranged so that at least a part thereof overlaps with the guide rail 10r in the front-rear direction. The reinforcing plate 13 is preferably arranged so as to overlap the guide rail 10r by more than half in the front-rear direction. With the above structure, the torsional rigidity of the drive-on plate 10 is improved.

The upper surface portion 11 of the drive-on plate 10 is provided with an opening 10k having a rectangular shape in a plan view in a predetermined range in the front-rear direction including the central portion 10c (a range shorter than the dimension between the front and rear wheels of the vehicle). A small lift 20 is arranged at 10k. Therefore, the reinforcing plate 13 is arranged on the rear side of the opening 10k. Of the pair of side surface portions 12, 12, the inner side surface portion 12 is provided with a high-rigidity portion 12g having a higher rigidity than the outer side surface portion 12 so as to be superimposed on the entire opening 10k in the front-rear direction, and is provided as a reinforcing plate. At least a part of 13 and the high-rigidity portion 12g are overlapped with each other in the front-rear direction. The high-rigidity portion 12g is formed by using a steel plate thicker than the other portion for a part of the members constituting the side surface portion 12. With the above structure, the torsional rigidity of the drive-on plate 10 can be further improved.

The small lift 20 is a kind of so-called freewheel lift for raising a vehicle by freewheeling the wheels, and includes a board 21 and an elevating mechanism 22. The board 21 is a rectangular plate-shaped member in a plan view having a dimension shorter than that between the front and rear wheels of the vehicle, and mounts the bottom of the vehicle. As shown in FIG. 2, the elevating mechanism 22 includes a small X-link mechanism 22a in which a pair of link members intersect in an X-shape at the center in the front-rear direction, and drives a small cylinder 22b arranged behind the intersection. By opening and closing by force, the board 21 is moved up and down in a horizontal position.

<Vehicle maintenance lift 1 Action of each part>
Next, the operation of each part when raising and lowering the vehicle in the vehicle maintenance lift 1 will be described. First, the heights of the drive-on plates 10 and 10 are lowered to the lower limit position so that the upper surface is flush with the floor F. At this time, the wheel chock 10s is entirely housed in the drive-on plate 10 and does not project to the upper surface. In this state, the vehicle to be maintained is run on the floor F, each wheel is placed on the drive-on plates 10 and 10, and the vehicle is stopped so as to be placed in an appropriate position on the drive-on plates 10 and 10. ..

Next, the drive-on plates 10 and 10 are raised by extending the cylinders 33 and 33 and gradually reducing the opening of the X-link mechanisms 30 and 30. When the drive-on plates 10 and 10 start to rise, the wheel chocks 10s at both front and rear ends project to the upper surface, so that the front-rear movement of the vehicle is reliably prevented. Then, when the height of the vehicle reaches an appropriate height for easy maintenance work, the ascending of the drive-on plates 10 and 10 is stopped. In this state, the worker can perform maintenance on the vehicle. With each wheel mounted on the drive-on plates 10 and 10, the load of the vehicle is applied almost evenly in the width direction of each drive-on plate 10.

On the other hand, when performing maintenance around the wheels, it is necessary to raise and lower the wheels in a free state. In such cases, a small lift 20 or a jacking beam 40 is used. Either the small lift 20 or the jacking beam 40 may be selected according to the structure and dimensions of the vehicle. When the small lift 20 is used, the board 21 is raised via the elevating mechanism 22 so as to come into contact with an appropriate position on the bottom surface of the vehicle, and the board 21 is further raised and placed so that the wheels are in a free state. The vehicle rises while being held at (see Figures 1 and 2). In this state, the worker can perform maintenance around the wheels. When the bottom surface of the vehicle is placed on the small lifts 20 and 20, the load of the vehicle is applied almost evenly in the width direction of each drive-on plate 10.

Further, when the jacking beams 40 and 40 are used, as shown in FIG. 3, the pedestals 41 are arranged in advance on the drive-on plates 10 and 10 at two locations separated in the front-rear direction via the elevating mechanism 43. Is raised, aligned with an appropriate position on the bottom surface of the vehicle, and the pedestal 41 is raised and placed, so that the vehicle is lifted with the wheels free. In this state, the worker can perform maintenance around the wheels. With the bottom surface of the vehicle mounted on the jacking beams 40, 40, the load of the vehicle is applied to the vicinity of the inner end in the width direction of each drive-on plate 10 via the roller 42a and the inner rail 10t. .. That is, the load is biased inward in the width direction of the drive-on plate 10.

Here, since the cylinder 33 is arranged on the front side of the intersection 30c in the X-link mechanism 30, the drive-on plates 10 and 10 are configured to have strong torsional rigidity on the front side of the central portion 10c. .. On the other hand, on the rear side where the cylinder 33 does not exist in the X-link mechanism 30, the drive-on plates 10 and 10 are on the rear side from the central portion 10c, and the upper surface portion 11, the pair of side surface portions 12, 12 and the reinforcing plate 13 form a box. The shape structure is formed, and the torsional rigidity of the drive-on plate 10 is improved. Therefore, even if the load is biased inward in the width direction of the drive-on plate 10, the drive-on plates 10 and 10 are prevented from falling inward, and the vehicle can be safely moved up and down by the jacking beams 40 and 40. Can be done.

<Summary>
As is clear from the above details, the vehicle maintenance lift 1 of the present embodiment includes a pair of left and right drive-on plates 10 and 10 on which the wheels of the vehicle are mounted, and an outer link 31 as a pair of link members. The inner links 32 are rotatably pivotally attached to each other at the center in the longitudinal direction, and their front side ends are pivotally fixed and the rear side ends are slidable, so that the outer link 31 and the inner link can be slidable. With the X-link mechanism 30 and 30 that raises and lowers the drive-on plates 10 and 10 by arranging the cylinder 33 on the front side with respect to the intersection 30c of 32 and opening and closing the outer link 31 and the inner link 32 by the driving force thereof. , A jacking beam 40, 40 that is erected between the pair of drive-on plates 10, 10 and raises and lowers a pedestal 41 on which the bottom of the vehicle is placed.

In the vehicle maintenance lift 1, the drive-on plate 10 includes an upper surface portion 11 extending in the front-rear direction and a pair of side surface portions 12 and 12 hanging along both left and right sides of the upper surface portion 11. The drive-on plate 10 is located between the pair of side surface portions 12 and 12 below the upper surface portion 11 on the rear side of the central portion 10c corresponding to the front-back movement range of the intersection portion 30c in the X-link mechanism 30. A reinforcing plate 13 to be erected is provided, and a box-shaped structure is formed by the upper surface portion 11, the pair of side surface portions 12, 12 and the reinforcing plate 13.

According to this configuration, the drive-on plate 10 is erected between the pair of side surface portions 12 and 12 below the upper surface portion 11 on the rear side where the torsional rigidity tends to be lower than that on the front side where the cylinder 33 is provided. By providing the plate 13, a box-shaped structure is formed by the upper surface portion 11, the pair of side surface portions 12, 12 and the reinforcing plate 13, so that the torsional rigidity of the drive-on plate 10 is improved and the jacking beam 40 is provided. The drive-on plates 10 and 10 are prevented from falling inward when the bottom of the vehicle is placed on the cradle 41. That is, it is possible to provide a vehicle maintenance lift 1 that can effectively prevent the drive-on plates 10 and 10 from falling inward while suppressing an increase in the weight of the entire device.

The drive-on plate 10 is further provided with a plurality of cross beam members 14 erected between the pair of side surface portions 12 and 12 at intervals in the front-rear direction, and the reinforcing plate 13 is provided with respect to the plurality of cross beam members 14 in the front-rear direction. It is arranged so as to straddle and is fixed to the lower end of each cross beam member 14.

According to this configuration, the reinforcing plate 13 is further arranged in the front-rear direction with respect to the plurality of cross beam members 14 provided on the drive-on plate 10 to form a plurality of box-shaped structures. The torsional rigidity of the drive-on plate 10 is improved.

The drive-on plate 10 has a guide rail 10r having a predetermined length in the front-rear direction on the rear side of the central portion 10c, and the outer link 31 has a front end portion on the base pivot portion 51 provided on the installation surface. The rear end is slidably connected to the guide rail 10r while being pivotally fixed, and the reinforcing plate 13 is arranged so that at least a part thereof overlaps with the guide rail 10r in the front-rear direction. ..

According to this configuration, the reinforcing plate 13 is arranged so as to overlap at least a part of the guide rail 10r of the drive-on plate 10 in the front-rear direction, and the rigidity of the drive-on plate 10 of the portion is improved. By constantly applying a vertical load to the outer link 31 via the guide rail 10r, the drive-on plate 10 is effectively prevented from falling inward.

The reinforcing plate 13 is arranged so as to overlap the guide rail 10r by more than half in the front-rear direction.

According to this configuration, the drive-on plate 10 is further effectively prevented from falling inward.

The upper surface portion 11 of the drive-on plate 10 is provided with an opening 10k in a predetermined range in the front-rear direction including the central portion 10c. A small lift 20 having an elevating mechanism 22 is arranged, and the reinforcing plate 13 is arranged on the rear side of the opening 10k.

According to this configuration, in a configuration in which an opening 10k is provided on the upper surface portion 11 of the drive-on plate 10 and a small lift 20 is arranged, the torsional rigidity of the drive-on plate 10 is improved behind the opening 10k. This makes it possible to effectively prevent the drive-on plate 10 from falling inward. Further, since the elevating mechanism 22 of the small lift 20 does not interfere with the reinforcing plate 13 when descending, the height when descending can be kept low.

Of the pair of side surface portions 12, 12, the inner side surface portion 12 is provided with a high-rigidity portion 12g having a higher rigidity than the outer side surface portion 12 so as to be superimposed on the entire opening 10k in the front-rear direction, and the reinforcing plate 13 is provided. And the high-rigidity portion 12g overlap at least a part in the front-rear direction.

According to this configuration, since at least a part of the reinforcing plate 13 and the high-rigidity portion 12g are overlapped in the front-rear direction, it is possible to prevent a portion having low rigidity from being partially generated from the opening 10k to the rear side. ..

<Modification example>
The present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the gist of the present invention. For example, in the above embodiment, the example in which the small lift 20 is provided on the drive-on plate 10 is shown, but the present invention may be applied to a configuration in which the small lift 20 is not provided.

1 Vehicle maintenance lift 10 Drive-on plate 10c Central part 10r Guide rail 10k Opening part 11 Top surface part 12 Side part 12g High rigidity part 13 Reinforcing plate 14 Cross beam material 20 Small lift 21 Board 22 Lifting mechanism 30 X Link mechanism 30c Crossing part 31 Outer link 32 Inner link 33 Cylinder 40 Jacking beam 41 Cradle 43 Elevating mechanism 51 Base pivot

Claims (6)

A pair of left and right drive-on plates on which the wheels of the vehicle are placed and a pair of link members cross each other at the center in the longitudinal direction and are pivotally mounted rotatably, and their front side ends are pivotally fixed and rearward. The side ends can be slidable, and the drive-on plates can be raised and lowered by arranging a cylinder on the front side with respect to the intersection of the pair of link members and opening and closing the pair of link members by the driving force thereof. In a vehicle maintenance lift provided with an X-link mechanism for causing the vehicle to move, and a jack beam which is installed between the pair of drive-on plates and raises and lowers a pedestal on which the bottom of the vehicle is placed.
The drive-on plate includes an upper surface portion extending in the front-rear direction and a pair of side surface portions hanging along both left and right sides of the upper surface portion.
The drive-on plate includes a reinforcing plate erected between the pair of side surface portions below the upper surface portion on the rear side of the central portion corresponding to the front-back movement range of the intersection in the X-link mechanism. A vehicle maintenance lift in which a box-shaped structure is formed by the upper surface portion, the pair of side surface portions, and the reinforcing plate. The drive-on plate further includes a plurality of cross beam members erected between the pair of side surface portions at intervals in the front-rear direction.
The vehicle maintenance lift according to claim 1, wherein the reinforcing plate is arranged so as to straddle the plurality of cross beam members in the front-rear direction and is fixed to the lower end of each of the cross beam members. The drive-on plate has a guide rail having a predetermined length in the front-rear direction on the rear side of the central portion.
One of the pair of link members has the front end portion pivotally fixed to the pivot portion provided on the installation surface and the rear end portion slidably connected to the guide rail. ,
The vehicle maintenance lift according to claim 1 or 2, wherein the reinforcing plate is arranged so as to overlap at least a part of the guide rail in the front-rear direction. The vehicle maintenance lift according to claim 3, wherein the reinforcing plate is arranged so as to overlap the guide rail by more than half in the front-rear direction. The upper surface portion of the drive-on plate is provided with an opening in a predetermined range in the front-rear direction including the central portion.
A small lift having a board on which the bottom of the vehicle is placed and an elevating mechanism for raising and lowering the board is arranged in the opening.
The vehicle maintenance lift according to any one of claims 1 to 4, wherein the reinforcing plate is arranged on the rear side of the opening. On at least one of the pair of the side surface portions, a high-rigidity portion having a higher rigidity than the other portions of the side surface portions is provided so as to overlap with the entire opening in the front-rear direction.
The vehicle maintenance lift according to claim 5, wherein at least a part of the reinforcing plate and the high-rigidity portion are overlapped in the front-rear direction.

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