JP3771461B2 - Vehicle maintenance lift - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a vehicle maintenance lift, and in particular, includes a table (board) that is moved up and down by a lifting drive means, and a plurality of swing arms that are attached to the table and swing in a horizontal direction along the upper surface of the table. It relates to a vehicle maintenance lift.
[0002]
[Prior art]
Conventionally, this type of vehicle maintenance lift is described in Japanese Patent No. 2664359. An example described in this publication (invention according to claim 3) is as follows: “An ordinary general recess capable of accommodating a pair of left and right tables is formed on the installation floor surface, and a pair of swings is formed in the recess. A slightly large storage recess that can store the arm is formed continuously, and when the swing arm is not used, each swing arm that stands by at the standby position is moved to the lower limit position, and the slightly larger storage recess is formed. It is characterized by storing each swing arm. "
[0003]
In this vehicle maintenance lift, when the table (board) is lowered to a position that is substantially the same level as the installation floor, and each swing arm is lowered to a slightly larger storage recess, the upper surface of each swing arm is also installed on the installation floor. Since the height is substantially the same as the surface, there are advantages in that it is easy to enter and work on the vehicle and to prevent the operator from tripping over each swing arm.
[0004]
However, in the above-mentioned lift for vehicle maintenance, since a slightly large storage recess capable of storing a pair of swing arms is formed continuously on the installation floor surface, the overall volume ratio of the recess with respect to the installation floor surface Since the pair of front and rear swing arms protrude to the outside of the left and right tables, the effective use of the work bay is affected to some extent in maintenance shops with few installation floors. There was also a problem that an uncomfortable feeling that the lift was large occurred. In addition, when mounting the arm lifting means, for example, the distal end of the operating rod of the air cylinder is connected to the arm bracket projecting on the outer wall surface of the table and between the pivot shafts, for example, the base end of each swing arm. Since the arm lifting / lowering means is attached so as to contact the lower surface, there is a problem that the table (board) becomes heavy accordingly. Furthermore, even if each swing arm is lowered to a slightly larger storage recess, there is a considerable gap between the outer peripheral wall of each swink arm and the inner peripheral wall of the slightly larger storage recess. There were still problems to be solved from the viewpoint.
[0005]
[Problems to be solved by the invention]
In view of the above-described problems of the vehicle maintenance lift described above, the first object of the present invention is to enter and operate a vehicle without forming a slightly large storage recess for storing each swing arm on the installation floor. It is providing the lift for vehicle maintenance which can achieve the advantage that it is easy to do. The second object is to prevent the weight from being added to the board when the swinging arm lifting means is attached. A third object is to prevent a substantially gap from being generated between the upper surface of the board and the upper surface of each swing arm when the pair of front and rear swing arms are housed in the opening of the board. A fourth object is to allow a single arm support provided for moving the pair of front and rear swing arms simultaneously with the third object to smoothly move up and down. The fifth object is to integrate and flatten the board and each swing arm by rational means, and the other object is not a specific requirement of the present invention.
[0006]
[Means for Solving the Problems]
The vehicle maintenance lift according to the present invention is for vehicle maintenance in which the board enters a recess formed in the installation floor surface at the lower limit position where the lift drive means of the lift contracts, and the upper surface of the board is substantially flush with the installation floor surface. In the lift, a horizontally long opening 22 for storing swing arms 3 and 3 that can swing in the horizontal direction is formed on the upper surface 21 of the board 1, and when these swing arms are used, the installation floor surface is used. The horizontally elongate opening is provided through an arm elevating means 6 installed in a recess B of A and below the board, and an arm support base 25 that is raised by the lifting force of the arm elevating means 6. When the swing arms 3 and 3 are completely protruded from the portion 22 and it is not necessary to use the swing arm, the installation floor surface A and the upper surface 21 of the board 1 are substantially flush with the lower limit position of the lift. Become Characterized in that the sea urchin swing arm 3,3 is lowered to the horizontal opening 22.
[0007]
In the above-described configuration, the board 1 is a long box type cradle having a lower end opening. The box type cradle is provided with a single arm support base 25, and an end of the arm support base 25 has a fitting support shaft. A pair of front and rear swing arms 3 and 3 are mounted via 31 .
[0008]
Further, the vehicle maintenance lift according to the present invention is a vehicle maintenance in which the board enters a recess formed in the installation floor surface at the lower limit position where the lift drive means contracts, and the upper surface of the board is substantially flush with the installation floor surface. In the lift for use, a horizontally long opening 22 for storing swing arms 3 and 3 that can swing in the horizontal direction is formed on the upper surface 21 of the board 1, and when these swing arms are used, the horizontally long When the swing arms 3 and 3 that move up and down simultaneously through a horizontally long arm support that moves up and down in the box-shaped board from the opening 22 are completely projected, on the other hand, when it is not necessary to use the swing arm The swing arms 3 and 3 are lowered to the horizontally long opening 22 so as to be substantially flush with the installation floor A and the upper surface 21 of the board 1 at the lower limit position of the lift.
[0009]
In the above configuration, the arm support base 25 extends to the inner wall surfaces 27a and 27a of the front and rear side walls 27 and 27 of the board 1 and is fixed to either the inner wall side of the board or / and the peripheral wall side of the arm support base. It is characterized by moving up and down via the plate 28. Further, a mounting hole 50 is formed in the arm support base 25A, and attachments having different height dimensions are detachably fitted into the mounting hole 50.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, components according to an embodiment of the present invention will be described with reference to the drawings.
[0011]
(1) Environment for carrying out the invention First, the environment for carrying out the invention will be described with reference to FIG. X is a lift for vehicle maintenance. As described in the prior art, the vehicle maintenance lift X of the present invention also includes a pair of left and right boards 1, 1, left and right lifting drive means 2 for moving these boards up and down, and a pair of left and right boards 1, 1. 1 and a pair of front and rear swing arms 3 and 3 that swing horizontally along the upper surface of the board (four in total). In FIG. 1, the other-side board raising / lowering driving means 2 and the pair of front and rear swing arms 3, 3 are the same as those on the front side, and are omitted for convenience of explanation. That is, the main parts of the present invention (the board 1, the pair of front and rear swing arms 3 and 3, the board elevating drive means 2, the arm elevating means 6 described later, etc.) are the same on the left and right.
[0012]
Next, in FIG. 2, reference symbol A is an installation floor surface of a work bay in a maintenance shop. B is a recess formed in the floor surface A, and the recess B is formed, for example, in an inverted U shape when viewed from a plane. C is a maintenance vehicle supported by the boards 1, 1 or the four swing arms 3, 3.
[0013]
Next, referring to FIG. 1 and FIG. 2, 4 is a fixed case as a base member housed in the recess B. The fixed case 4 has an upper surface opened, and an upper end surface 5 of the opening is an installation floor surface. The height dimension of the side wall is appropriately set so as not to protrude from A. Reference numeral 6 denotes arm lifting / lowering means housed and installed in a space portion 9 between the outer side wall 7 of the fixed case 4 and the inner wall surface 8 of the recess B. In this embodiment, the arm lifting / lowering means 6 is fixed in a horizontal state at the air cylinder 10 installed at the center of the recess B or at a position near the center, and the tip of the operating rod 11 of the air cylinder 10. The lifting plate 12 is located below the installation floor A when contracted.
[0014]
The board raising / lowering driving means 2 is engaged with a plurality of main swing support legs 13 and lower support legs 15 having ratchet teeth 14 combined in a crossing manner, and an upper part having a safety engagement device 16. A slide leg 17 and the like are provided, and the lower end portion of each slide support leg 13 is pivotally supported by front and rear horizontal shafts 18, 18 that are horizontally mounted on the fixed case 4.
[0015]
(2) Main part of the present invention The main part of the present invention is a board 1 used for lifting a maintenance vehicle having a monocoque structure such as an ordinary passenger car, and a frame structure such as an RV car or a one-box car. A pair of front and rear swing arms 3 and 3 is provided. The swing arms 3 and 3 are incorporated in the longitudinal openings 22 and 22 formed in the board 1 so as to be movable up and down. When the swing arm is not used, the upper surface of the board 1 and a pair of front and rear swings The upper surfaces of the arms 3 and 3 (the upper surfaces of the cover plates when the cover plates 36 and 36 are provided) are flattened. In addition, description is omitted about the part which is not related to the specific requirements of this invention.
[0016]
(3) Specific Configuration of Main Part First, the structure of the board 1 will be described. As shown in FIGS. 3 and 4, the board 1 is a long box having a lower end opening 20 that does not have a lower surface (bottom wall). As shown in FIG. 1, the upper surface (upper wall) 21 of the board 1 is formed with a pair of front and rear horizontal openings 22 and 22 for storing the swing arms 3 and 3. These horizontally long openings 22, 22 are formed in a long hole state along the outer side wall 1 a in a portion near the outer side wall 1 a of the upper wall 21 of the board 1, and communicate with the lower end opening 20. Yes.
[0017]
Reference numeral 23 denotes a partition wall which is fixedly provided in the board 1 and faces the outer side wall 1a with a predetermined interval. A plurality of cross-section or end face L-shaped support plates 24 are fixedly arranged at appropriate positions on the partition wall 23 and the inner wall surface of the outer side wall 1a. These support plates 24 function as a stopper for stopping the arm support 25 at a predetermined storage position when the swing arms 3 and 3 are lowered.
[0018]
(4) Arm support base In this embodiment, the arm support base 25 includes an inner wall surface 21a of the upper wall 21 of the board 1, an inner wall surface of the outer side wall 1a, one side surface of the partition wall 23, and a plurality of support plates 24. Are accommodated in the board internal space 26 with reference to each of them. The number and shape of the arm support bases 25 are not particularly limited. In this embodiment, in order to move the pair of front and rear swing arms 3 and 3 at the same time, the width is slightly wider than the width of the swing arm, and the board. A single thin long box extending to a position approaching the inner wall surfaces 27a, 27a of the front and rear side walls 27, 27 is adopted. Of course, depending on the design, a generally long plate shape may be used.
[0019]
Accordingly, a plurality of slips which are in sliding contact with the inner wall surface of the outer side wall 1a and the one side surface of the partition wall 23 are provided on the peripheral wall of the slightly elongated box-like arm support base 25 of this embodiment, for example, the left and right and front and rear side walls. A plate 28 is fixedly provided.
[0020]
(5) A pair of front and rear swing arms A pair of front and rear swing arms 3 and 3 is provided with front and rear end portions of the arm support base 25 via fitting support shafts 31 fixedly suspended on the lower surface of the base end portion 30 ( (Including a portion close to the end) so that it can swing along the upper surface 21 of the board 1. These swing arms 3 and 3 can be freely extracted from the upper and lower fitting holes 34 and 35 formed in the upper wall 32 and the lower wall 33 of the arm support base 25.
[0021]
Here, with reference to FIG. 3, the left side is the front swing arm 3, and the right side is the rear swing arm 3. The pair of front and rear swing arms 3 and 3 are respectively housed in the horizontally long openings 22 and 22 of the board 1 when the board 1 is lowered to a position where the board 1 is supported by each support plate 24 (see FIG. 5).
[0022]
In the present embodiment, long plate-like lid plates 36 and 36 that substantially close the horizontally long openings 22 and 22 are fixedly provided on the upper surfaces of the swing arms 3 and 3, respectively. As shown in FIG. 5, the lid plates 36 and 36 of the swing arms 3 and 3 are substantially the same as the installation floor surface A and the upper surface 21 of the board 1 when the arm support 25 is lowered to the place where the support plates 24 are supported. It becomes the same plane. Here, “substantially the same plane” does not mean that the plane is physically substantially the same plane, but is the same meaning (flattening) that makes it easy to enter and work on a vehicle based on social conventions or those skilled in the art. . Therefore, even if the long plate-like cover plates 36 and 36 slightly protrude (for example, about 3 mm) from the upper surface 21 or the installation floor surface A of the board 1, they are substantially the same plane.
[0023]
By the way, the swing arms 3 and 3 are composed of a sheath-like arm main body 37 and a telescopic arm 38 extending from the arm main body 37, and an attachment (exchangeable cradle) 39 is attached to the tip of the telescopic arm 38. Is attached. Reference numeral 40 denotes a slide board which is not a specific requirement of the present invention but is provided on the board 1 so as to be freely drawn out. The slide board 40 is extended and used when lifting a medium-sized or large-sized passenger car having a longer wheel base.
[0024]
3 and 4 show an example in which the operating rod 11 of the arm elevating means 6 is extended and the arm support base 25 is lifted to a required position by the lifting plate 12 in the above-described configuration. Here, the movement of the arm support base 25 and the swing arm 3 will be described in more detail, excluding the talk of getting into the maintenance vehicle C and the description of the operation mode of the lifting drive means 2.
[0025]
When an operation switch (not shown) is operated, the operating rod 11 of the air cylinder 10 extends about 100 mm. The one arm support base 25 naturally rises when its lower wall 33 is lifted by the lifting plate 12. In this case, the pair of front and rear swing arms 3 and 3 are also raised simultaneously via the arm support base 25.
[0026]
When the upper wall 32 of the arm support base 25 comes into contact with the inner wall surface 21 a of the upper surface 21 of the board 1, the extension of the operating rod 11 stops there. Projects completely from the upper surface 21. Therefore, the maintenance worker appropriately rotates the pair of front and rear swing arms 3 and 3 along the upper surface 21 of the board 1 and sets the length of the telescopic arm 38 as appropriate to set the maintenance vehicle C.
[0027]
On the other hand, FIGS. 5 and 6 are examples in which the cover plates 36 and 36 of the swing arms 3 and 3 are substantially flush with the installation floor surface A and the upper surface 21 of the board 1. When an operation switch (not shown) is operated, the operating rod 11 of the air cylinder 10 is contracted by about 100 mm. Since the lower wall 33 of one arm support base 25 is directly or indirectly supported by the lifting plate 12, when the lifting plate 12 is lowered, the pair of front and rear swing arms 3 and 3 are also moved to the arm support base 25. To descend simultaneously.
[0028]
Then, when the lower wall 33 of the arm support base 25 comes into contact with each support plate 24, the contraction of the operating rod 11 stops there. At this time, the pair of front and rear swing arms 3 and 3 are provided with the horizontally long openings 22 and The cover plates 36 and 36 are completely flush with the installation floor surface A and the upper surface 21 of the board 1.
[0029]
The arm support 25 moves up and down via a sliding plate 28 in a board internal space 26 communicating with the horizontally long openings 22 and 22. Further, when an operation switch (not shown) is operated, the board 1 is moved up and down by a hydraulic cylinder and through the lifting drive means 2.
[0030]
【Example】
First, in one embodiment of the present invention, the “arm lifting means 6” is installed in the recess to automatically move the front and rear swing arms up and down. However, the arm raising / lowering means 6 can be considered from the standpoint of a person skilled in the art whether it is automatic or manual. For example, this is an example in which a competitor raises and lowers the front and rear swing arms using another member (for example, a lever, a handle, etc.) instead of the automatic arm elevating / lowering means 6 aiming at cost reduction.
[0031]
Therefore, it is better from the viewpoint of work efficiency that the lift is provided with the automatic arm lifting means 6, but it is not a specific requirement of the present invention. In short, it is only necessary to form a horizontally long opening portion of the board 1 and raise and lower the front and rear swing arms.
[0032]
Next, in the present embodiment, a total of two horizontally long openings 22 for storing the pair of front and rear swing arms 3 and 3 are provided in the front and rear, but in order to avoid this, the design is changed to “one horizontally long design”. Of course, this is also conceivable, and it is not a specific requirement of the present invention to provide a plurality of horizontally long openings 22 in the front and rear.
[0033]
Next, the lower end portion of each sliding support leg 13 constituting the board raising / lowering driving means 2 is mounted on the horizontal shaft 18 of the fixed case 4, but the fixed case 4 may not be provided depending on the installation. good. In this embodiment, the box-shaped fixed case 4 with the upper end opening is slightly smaller than the box-shaped board 1 with the lower end opening, and the arm lifting / lowering means 6 is positioned outside the fixed case 4. Whether or not it is located is not a specific requirement of the present invention. In short, the arm elevating means 6 may be installed in the recess so that the lifting plate 12 is located below the arm support 25.
[0034]
Next, in the embodiment of the present invention, the sliding plate 28 is fixed to the peripheral wall side of the arm support base, but this sliding plate is fixed to either the inner wall side of the board and / or the peripheral wall side of the arm support base. Also good.
[0035]
Finally, the arm support base 25 of the present invention is a slightly elongated box. Therefore, as shown in FIG. 7 and FIG. 8, a utilization invention is proposed in which the main part of the specific invention (the invention described in claim 1) is included as it is and the other components are added to the arm support base 25A.
[0036]
The purpose of this utilization invention is to allow the maintenance worker to immediately replace the attachment 39 at hand, considering the situation where the height of the attachment 39 as a cradle does not match depending on the maintenance vehicle (for example, truck) C. Is to do.
[0037]
Accordingly, at least one or more mounting holes 50 are formed in the box-shaped arm support base 25A, in this embodiment in the upper wall 32 and the lower wall 33 of the arm support base 25A, and these mounting holes 50 are formed. , 50, a total of two attachments 39A, 39B having different height dimensions are detachably fitted.
[0038]
With such a configuration, there is an advantage that the storage space of the arm support 25A can be effectively used and the attachment 39 can be easily replaced with other preliminary attachments 39A and 39B.
[0039]
[Operation and effect of the invention]
As is clear from the above description, the present invention has the following effects.
(1) A pair of front and rear horizontal openings 22 and 22 for storing the swing arms 3 and 3 are formed on the upper surface 21 of the board 1, and when these swing arms are used, the horizontal openings 22 and 22 When the swing arms 3 and 3 are completely protruded, on the other hand, when it is not necessary to use the swing arm, the installation floor surface A and the upper surface 21 of the board 1 are substantially flush with the lower limit position of the lift. Since the swing arms 3 and 3 are lowered to the horizontally long openings 22 and 22, the vehicle can be entered without forming a slightly large storage recess for storing each swing arm on the installation floor as in the conventional embodiment. And the advantage of easy work can be achieved.
(2) Moreover, since the arm raising / lowering means is installed so as to be located in the recess of the installation floor surface and below the board , the weight can not be added to the board.
(3) In the case of the embodiment in which the pair of front and rear swing arms moves up and down via one arm support base 25 that moves up and down in the board internal space of the long box-like board (in the case of the invention according to claim 2) ) , A plurality of swing arms can be moved up and down simultaneously and easily.
(4) In the case of the embodiment in which long plate-like lid plates 36 and 36 that substantially close the horizontally long openings 22 and 22 are fixedly provided on the upper surfaces of the swing arms 3 and 3, respectively, When the swing arm is housed in the opening of the board, there is almost no gap between the upper surface of the board and the upper surface of each swing arm, so there is a practical advantage in terms of aesthetics, work, and cleaning. .
(5) Furthermore, the arm support base 25 mounted on the board 1 extends to the inner wall surfaces 27a and 27a of the front and rear side walls 27 and 27 of the board 1, and on the inner wall side of the board or / and the peripheral wall side of the arm support base. In the embodiment that moves up and down via the sliding plate 28 fixed to either, the arm support base moves up and down stably, smoothly, or smoothly.
(6) The board and each swing arm can be integrated and flattened by rational means.
[Brief description of the drawings]
1 to 6 are explanatory views showing one embodiment of the present invention. FIG.7 and FIG.8 is each explanatory drawing which shows an example of a utilization invention.
FIG. 1 is a perspective view of a main part (the other side is omitted).
FIG. 2 is an explanatory diagram from a plane.
FIG. 3 is a schematic explanatory view in which a swing arm protrudes from an installation floor surface and an upper surface of the board (partially cut away from the outer side surface of the board).
4 is an explanatory diagram viewed from the left side with reference to FIG. 3;
FIG. 5 is a schematic explanatory diagram when the swing arm is substantially flush with the installation floor and the top surface of the board.
6 is an explanatory diagram viewed from the left side with reference to FIG.
FIG. 7 is an explanatory view showing the main part of the utilization invention from a perspective view.
FIG. 8 is a schematic explanatory view similar to FIG.
[Explanation of symbols]
X ... Lift for vehicle maintenance, 1 ... Board, 1a ... Outer side wall, 2 ... Elevating drive means, 3 ... Swing arm, 4 ... Fixed case, 5 ... Opening upper end surface, 6 ... Arm elevating means, 8 ... Recessed Inner wall surface, 9: space, 10: air cylinder, 11: operating rod, 12: lifting plate, 20: lower end opening, 21: upper surface of the board, 22: horizontally long opening, 23: partition wall, 24: support plate, 25 , 25A ... arm support, 26 ... board internal space, 27 ... front and rear side walls, 28 ... sliding plate, 30 ... base end of swing arm, 31 ... fitting support shaft, 32 ... upper wall of arm support, 33 ... lower wall of arm support, 34, 35 ... fitting hole, 36 ... cover plate, 37 ... arm body, 38 ... telescopic arm, 39, 39A, 39B ... attachment, 50 ... mounting hole.

Claims (7)

In the vehicle maintenance lift in which the board enters the recess formed in the installation floor surface at the lower limit position where the lift drive means contracts, and the upper surface of the board is substantially flush with the installation floor surface. On the upper surface 21, a horizontally long opening 22 for storing swing arms 3 and 3 that can swing in the horizontal direction is formed. When these swing arms are used , The swing arms 3 and 3 are moved from the horizontally long opening 22 through the arm lifting means 6 installed so as to be positioned below the board and the arm support 25 that is lifted by the lifting force of the arm lifting means 6. If the swing arm is not required to be used, the swing arms 3 and 3 are arranged so as to be substantially flush with the installation floor A and the upper surface 21 of the board 1 at the lower limit position of the lift. Vehicle maintenance lift, characterized in that is lowered into the long opening 22. In Claim 1, the board 1 is a long box type cradle having a lower end opening, and a single arm support base 25 is built in the box type cradle, and a fitting support is fitted to an end of the arm support base 25. A lift for vehicle maintenance, wherein a pair of front and rear swing arms 3 and 3 are mounted via a shaft 31. The lift for vehicle maintenance according to claim 1 or 2 , wherein the arm support base (25) is an elongated box . The vehicle maintenance according to claim 1, characterized in that long plate-like cover plates (36, 36) for substantially closing the horizontally long openings (22, 22) are fixedly provided on the upper surfaces of the swing arms (3, 3). Lift.   In the vehicle maintenance lift in which the board enters the recess formed in the installation floor surface at the lower limit position where the lift drive means contracts, and the upper surface of the board is substantially flush with the installation floor surface. Formed on the upper surface 21 is a horizontally long opening 22 for storing the swing arms 3 and 3 that can swing in the horizontal direction. When these swing arms are used, the inside of the box-shaped board passes through the horizontally long opening 22. If swing arms 3 and 3 that move up and down at the same time through a vertically long horizontal arm support stand are fully projected, and if it is not necessary to use a swing arm, the floor is installed at the lower limit position of the lift A vehicle maintenance lift, wherein the swing arms 3 and 3 are lowered to the horizontally long opening 22 so as to be substantially flush with the upper surface 21 of A and the board 1.   In Claim 5, the arm support base 25 extends to the inner wall surfaces 27a, 27a of the front and rear side walls 27, 27 of the board 1, and is fixed to either the inner wall side of the board or / and the peripheral wall side of the arm support base. A vehicle maintenance lift that moves up and down via a sliding plate.   6. The vehicle maintenance lift according to claim 5, wherein a mounting hole 50 is formed in the arm support base 25A, and attachments having different height dimensions are detachably fitted in the mounting hole 50.

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