JP3234926U - Car maintenance trolley - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a trolley for automobile maintenance which is compact, has excellent maneuverability, and has good maintainability. SOLUTION: An automobile maintenance trolley 1 is composed of a tire lifter 3, a work table 4, a frame 2, an air circuit 6, and a waste liquid tray 5. The tire lifter 3 is composed of a pair of left and right tire lifter arms 32 and a tire lifter frame 31 that connects the rear end sides of the tire lifter arms 32 to each other. The frame 2 is composed of a pair of left and right leg portions 21 and a connecting portion 22 for connecting the leg portions 21 to each other, and each of the leg portions 21 is on the front and rear end sides. A caster 24, a stopper 25, a frame support portion 23, a frame side plate portion 29 made of a plate-shaped member connecting the frame support portion 23 and the rear end side of the leg portion 21, and a waste liquid tray mounting portion 21a. The tire lifter 3 and the stopper 25 of the frame 2 are driven by using compressed air. [Selection diagram] Fig. 1

Description

The present invention relates to an automobile maintenance trolley used when performing maintenance such as inspection of an automobile.

Conventionally, a tire lifter called a wheel dolly as shown in Patent Document 1, for example, has been used when servicing around a tire of an automobile or the like. This wheel dolly is provided with struts on both left and right sides of the rear end of the frame provided with wheels, the struts support a pair of arms on which tires are placed so as to be able to move up and down, and the pair of arms are raised and lowered by a hydraulic cylinder. Is.

For example, when removing a tire, first, the car to be maintained is lifted to a predetermined height, and the arm of the wheel dolly moved below the tire to be attached / detached is raised to just below the tire. Next, loosen the wheel nuts, remove the tire from the car body, and place it on the arm. Then, after retracting the wheel dolly, the arm and the removed tire are lowered.

Similarly, when servicing an automobile, a work trolley as shown in Patent Document 2, for example, is used. This dolly houses various tools, but is equipped for tools that use compressed air, such as impact wrenches and brake fluid exchangers.

The above tire lifter and work trolley are often used together when servicing an automobile. For example, in the above-mentioned tire removing work, since it is common to use an impact wrench for the work of loosening the wheel nut, the work efficiency can be improved by using the work trolley together.

However, when the maintenance space is limited, it may not be possible to move the tire lifter and the work trolley to a desired position. In addition, since both devices must be moved separately, a troublesome situation may occur for the operator.

Furthermore, when both the tire lifter and the work trolley are used, maintenance of each device itself must be performed. Since the power of one is a hydraulic system and the other is a pneumatic system, the tools and methods used for maintenance are different, which has been a cause of trouble.

Japanese Unexamined Patent Publication No. 2006-347316 Japanese Unexamined Patent Publication No. 11-216688

Focusing on the above-mentioned situation, the present invention aims to provide a trolley for automobile maintenance that is compact, has excellent maneuverability, and is easy to maintain.

The configuration of the present invention made for the purpose of solving the above problems is to supply a tire lifter for raising and lowering a tire, a work table provided behind the tire lifter, a frame for installing the tire lifter and the work table, and compressed air. The tire lifter is a tire lifter frame for connecting a pair of left and right tire lifter arms extending in the front-rear direction and the rear end side of the tire lifter arms. The work table is composed of a pair of left and right work table columns extending upward from the rear end side of the frame, a work table tray mounted on the upper end of the pair of work table columns, and the work table tray. The frame is composed of an air gauge holder provided on the side surface side, and the frame is composed of a pair of left and right legs extending in the front-rear direction and a connecting portion connecting the legs, and each of the pair of legs is a front end. The front caster provided on the side, the rear caster provided on the rear end side, the stopper provided behind the front caster, the frame strut portion extending upward from the contact position between the leg and the connecting portion, and the said. The tire lifter frame has a frame side plate portion made of a plate-shaped member connecting the frame strut portion and the rear end side of the leg portion, and a waste liquid tray mounting portion on which the waste liquid tray is placed. The tire lifter and the stopper of the frame are held so as to be movable up and down using the frame strut portion as a guide, and the tire lifter and the stopper of the frame are driven by using compressed air supplied from the pneumatic circuit. Is.

In the automobile maintenance trolley of the present invention, it is desirable to provide rollers having a rotation axis parallel to the tire lifter arms on each of the upper surfaces of the pair of tire lifter arms.

In the automobile maintenance trolley of the present invention, rollers having a rotation axis parallel to the tire lifter arms may be provided on the side surfaces of the pair of tire lifter arms and on the surfaces where the pair of tire lifter arms oppose each other. desirable.

The automobile maintenance trolley of the present invention includes an air hydroconverter in which the tire lifter generates a hydraulic pressure from compressed air supplied via the pneumatic circuit, and an air hydro cylinder driven by the hydraulic pressure. It is preferable to go up and down by.

The automobile maintenance trolley of the present invention includes a tire dropout prevention stay for fixing the tire on the arm, and the tire dropout prevention stay may be detachably connected to the outer side surface of each of the arms.

In the automobile maintenance trolley of the present invention, the workbench has a shaft receiver for mounting a shaft-shaped component on the upper surface of the workbench, and the shaft receiver has a plurality of side surfaces provided on the upper surface of the workbench. It may be composed of a visual U-shaped member.

The automobile maintenance trolley of the present invention is compact and has excellent maneuverability by providing the functions of both the tire lifter and the work table as one unit, and the efficiency of maintenance work can be improved. Further, by driving the tire lifter and the work tools with a single system of compressed air, the maintainability of the automobile maintenance trolley itself can be improved.

It is a perspective view which showed an example of an automobile maintenance trolley. It is a front view of the same embodiment. It is a right side view of the same embodiment. It is a top view of the same Example. It is a rear view of the same Example. It is a pneumatic circuit diagram of the same embodiment.

Hereinafter, an example of the embodiment of the present invention will be described with reference to the drawings.
As shown in FIGS. 1 to 5, the automobile maintenance cart 1 according to an example of the embodiment of the present invention includes a frame 2, a tire lifter 3, a workbench 4, and a waste liquid tray 5.

The frame 2 has a main structure consisting of a pair of left and right frame legs 21 extending in the front-rear direction, a pair of frame connecting portions 22 connecting the respective frame legs 21, and a support column 23 extending upward from the frame legs 21. It is a member.

The frame leg 21 is a prismatic member, and casters 24 are provided on the lower surfaces of the front end and the rear end so that the automobile maintenance trolley 1 can be moved. Further, a stopper 25 is provided behind the caster 24 at the front end to stop the movement of the automobile maintenance trolley 1. The stopper 25 is composed of an air cylinder and operates by compressed air described later. Further, as shown in FIG. 2, the left and right frame legs 21 are connected to each other by a pair of frame connecting portions 22 made of prismatic members. A leg-operated stopper 26 is provided in the middle of the frame connecting portion 22. Further, the frame leg portion 21 includes a waste liquid tray mounting portion 21a on which the waste liquid tray 5 described later is placed. The shape and material of the waste liquid tray mounting portion 21a may be arbitrarily selected, but in this embodiment, a substantially U-shaped member in front view covering the upper side and left and right of the prismatic frame leg portion 21 and the U-shaped member. It is composed of ribs extending from the end of the member toward the center. Two waste liquid tray mounting portions 21a are provided in the front-rear direction of each of the pair of left and right frame leg portions 21, and the waste liquid tray 5 is placed on the rib of the waste liquid tray mounting portion 21a.

A frame strut portion 23 extending upward from a position between the pair of frame connecting portions 22 is attached to each of the frame leg portions 21. As shown in FIG. 4, the frame support portion 23 is a member having a substantially U-shape in a plan view, and the left and right frame support portions 23 are arranged so that their opening surfaces face each other. When the cam follower 35, which will be described later, rolls inside the opening surface, the tire lifter 3 can move up and down along the frame strut portion 23. Further, the frame support portions 23 are connected to each other by using reinforcing plates 27a, 27b, 27c.

A side cover 29 is attached to the lower part of the frame support portion 23 so as to connect the frame support portion 23 to the rear side of the frame leg portion 21. As a result, the pipes for compressed air, which will be described later, are hidden, and rigidity is added so as to prevent the frame support portion 23 from falling back and forth. In a wheel dolly which is a normal tire lifter, it is common to provide a support column near the rear end of the frame. Due to the weight of the arm and tire, a force is applied to the strut in the direction of tilting the strut forward, but since there is an arm on which the tire is placed in front of the strut, the rigidity in the front-rear direction of the strut is between the strut and the frame. Must be maintained by the joint only. On the other hand, in the present invention, the frame strut portion 23 and the rear portion of the frame leg portion 21 can be connected by the side cover 29 to maintain the rigidity, so that the maintenance trolley 1 for automobiles 1 can be made compact and lightweight. can.

The tire lifter 3 includes a front view square-shaped tire lifter frame 31, a pair of left and right arms 32 extending forward from the upper end of the tire lifter frame 31, an air hydro cylinder 33 for raising and lowering the tire lifter 3, and an air hydroconverter 34. Have.

The tire lifter frame 31 includes a pair of upper and lower horizontal frame portions 31a and 31b extending to the left and right, and a vertical frame portion 31c connecting both ends of the horizontal frame portions 31a and 31b, respectively. The horizontal frame portion 31a is a prismatic member, and brackets 31d for connecting the rods at the upper ends of the air hydrocylinder 33 are attached to the vicinity of both ends thereof. The vertical frame portion 31c is a plate-shaped member extending in the vertical direction, and a cam follower 35 is attached to the outside thereof. When the cam follower 35 rolls on the inner wall surface of the frame strut portion 23, the tire lifter 3 moves up and down along the frame strut portion 23. The lower ends of the vertical frames 31c are connected to each other by the horizontal frames 31b, which are plate-shaped members.

The pair of left and right arms 32 are prismatic members, and are attached so that the upper surface of the rear end abuts the horizontal frame portion 31a of the tire lifter frame 31 and the side surface of the rear end abuts the vertical frame 31c. Further, the arm 32 and the horizontal frame 31a are configured so that the load of the tire or the like can be supported by the reinforcing plate 36.

A pair of front and rear rollers 32a are coaxially attached to the upper surfaces of the pair of left and right arms 32, and a pair of front and rear rollers 32b are coaxially attached to the inner side surfaces. When raising and lowering the tire with the tire lifter 3, the tire is placed on the rollers 32a or 32b, and the rotation of the rollers 32a and 32b makes it easy to hold the tire at the center of the pair of arms 32. Further, since the distance between the rollers 32a and 32b is different, the roller to be used can be selected according to the outer diameter of the tire, and the width of the outer diameter of the tire on which the tire lifter 3 can move up and down is widened. Further, a bracket 32c for attaching the tire dropout prevention stay 7 is attached to the outer side surface. Since the tire can be fixed by a wire or the like (not shown) via the tire dropout prevention stay 7, this can be safely performed even when the tire is raised or lowered or transported.

The rod portion 33a of the air hydrocylinder 33 is connected to each of the brackets 31d provided on the lateral frame portion 31a of the tire lifter frame 31. The cylinder portion 33b of the air hydro cylinder 33 is connected to the bracket 28 provided on the frame connecting portion 22a described above, and the air hydro cylinder 33 expands and contracts to raise and lower the tire lifter 3. Further, an air hydroconverter 34 is installed behind each of the air hydro cylinders 33. In this embodiment, the hydraulic air hydrocylinder 33 is used for raising and lowering the tire lifter 3 in order to withstand the load of the tire for a large vehicle, but a tire of a general vehicle or the like that is not heavy is placed. In this case, an air cylinder may be used instead of the air hydro cylinder 33 and the air hydro converter 34. Since the air cylinder has a cushioning effect due to the compression of air, when removing the tire from the vehicle, raise the arm 32 until it comes into contact with the tire, remove the wheel nut, and push down the tire while pushing it down. Since it can be pulled out from the vehicle, it is possible to minimize the risk of the tire falling from the work vehicle 1 for automobiles.

The work table 4 includes a pair of left and right work table columns 41 extending upward from the rear end side of the frame legs 21, a work table tray 42 laid horizontally on the upper ends of the pair of work table columns 41, and a work table tray 42. It has an air gauge holder 47 provided on the side surface side.

The pair of left and right workbench columns 41 are prismatic members, and the lower ends thereof are attached to the upper surface on the rear end side of the frame leg 21 via a bracket 43 having a substantially rectangular shape in a plan view. As shown in FIG. 5, the bracket 43 includes a tool holder 43a for accommodating tools such as a large impact wrench and a tank accommodating portion 43b for accommodating tools having a columnar lower portion such as a tank for a brake bleeder. Is provided. Further, as shown in FIG. 5, a substantially rectangular back cover 44 is attached to the back side of the workbench support column to hide the piping for compressed air and connect the pair of workbench support columns 41 to each other. To give rigidity.

A workbench tray 42 is provided at the upper end of the workbench support column 41. A shaft receiver 42a, a tool holder 42b, a parts tray 42c, and a handle 42d are installed on the upper surface of the workbench tray 42. The shaft receiver 42a is a member in which a member having a substantially arc-shaped side view is attached to the workbench tray 42 via a bracket. In this embodiment, this member is provided on the left, right, center, and left and right of the upper surface of the workbench tray 42, and parts such as a drive shaft removed from the vehicle can be placed on the member. The tool holder 42b is attached to the workbench tray 42 by inclining a substantially cylindrical member rearward. A medium-sized impact wrench or the like can be inserted into this to fix it. The parts tray 42c is a small tray-shaped member installed on the upper surface of the workbench tray 42. It is possible to organize small items such as bolts and nuts removed from the vehicle, or small tools. The handle 42d is a pipe-shaped member formed in a substantially U-shape in front view, and the automobile maintenance trolley 1 can be moved with the handle 42d.

As shown in FIG. 5, a pair of tire lifter raising / lowering switches 45 are attached to the left and right below the workbench tray 42. By operating this switch, the air hydro cylinder 33 can be operated via the air hydro converter 34 to raise and lower the tire lifter 3. Further, a stopper operating lever 46 is attached at a position near the middle of the tire lifter elevating switch 45, and the stopper 25 can be operated by using this. By arranging the tire lifter elevating switch 45 and the stopper operating lever 46 centrally below the workbench tray 42, the operator grasps the handle 42d and moves the automobile work cart 1 to a desired position without moving from the place. The tire lift 3 can be raised and lowered.

An air gauge holder 47 for accommodating an air gauge for measuring and / or adjusting the tire pressure is provided on the side surface side of the workbench tray 42. The air gauge holder 47 of this embodiment is a member formed by forming a metal plate into a substantially cylindrical shape, and is arranged on the left side of the work table tray 42 in a front view. It should be noted that whether the air gauge holder 47 is arranged on the left or right side of the workbench tray 42 may be arbitrarily selected.

The waste liquid tray 5 is a tray placed between a pair of left and right frame legs 21. In this embodiment, each of the pair of left and right frame legs 21 is provided with a waste liquid tray mounting portion 21a, and the waste liquid tray 5 is mounted on the waste liquid tray mounting portion 21a. Since the automobile maintenance trolley 1 in this embodiment is configured so that the tire lifter 3 is located above the pair of left and right frame legs 21, the tire and / or the wheel can be mounted on the tire lifter 3. When cleaning, cleaning, etc., the cleaning liquid used for the cleaning, tire deposits, and the like are received by the waste liquid tray 5, so that the floor surface and the like can be effectively prevented from becoming dirty.

The automobile maintenance trolley 1 of this embodiment includes the air circuit 6 shown in FIG. The air circuit 6 includes an air suction coupler C1, a plurality of air supply couplers C2, a filter regulator R1, a valve V1 connected to a stopper operating lever 46, and valves V2, V3, and V4 connected to a tire lifter lifting switch 45. It is connected to the air cylinder of the air hydroconverter 34, the air hydro cylinder 33, and the stopper 25. Compressed air supplied by connecting an air hose (not shown) to the air supply coupler is used not only for work tools but also as a power source for raising and lowering the tire lifter 3 and the stopper 25. The air circuit 6 of this embodiment has an air suction coupler C1 and receives compressed air from equipment such as a maintenance shop and distributes it to each tool, etc., but further, a cylinder that stores compressed air. Etc. may be added. This makes it possible to perform maintenance work even when there is no equipment capable of supplying compressed air, or when the work is performed in a place where the air piping does not reach.

Since the automobile maintenance trolley 1 of the present embodiment includes the tire lifter 3 and the workbench 4, not only the workability can be improved, but also a plurality of functions can be provided by a compact device. Further, the driving of the tools and the driving of the tire lifter 3 and the stopper 25 are powered by the compressed air supplied by the air circuit 6. By using a single power system, not only can the automobile maintenance trolley 1 be made more compact, but it is not necessary to maintain each of the plurality of power systems, and the maintainability of the automobile maintenance trolley 1 is not required. Can also be improved.

The configuration of the present invention is not limited to the above embodiment.
For example, in the present embodiment, the frame 2 and the tire lifter 3 are mainly made of prismatic members, but may be cylindrical. Further, a plurality of workbench trays 4 may be provided depending on the object to be maintained, or the number of tool holders may be increased or decreased. The other specific configurations are not limited to the above-described embodiment, and various changes can be made without departing from the spirit of the present invention.

1 dolly 2 frame 3 tire lifter 4 workbench 5 waste liquid tray 6 air circuit 7 tire dropout prevention stay

Claims (6)

It is an automobile maintenance trolley that has a tire lifter for raising and lowering tires, a workbench provided behind the tire lifter, a frame for installing the tire lifter and the workbench, an air circuit for supplying compressed air, and a waste liquid tray. hand,
The tire lifter is composed of a pair of left and right tire lifter arms extending in the front-rear direction and a tire lifter frame connecting the rear end sides of the tire lifter arms.
The work table includes a pair of left and right work table columns extending upward from the rear end side of the frame, a work table tray mounted on the upper end of the pair of work table columns, and an air gauge provided on the side surface side of the work table tray. Consists of a holder and
The frame is composed of a pair of left and right legs extending in the front-rear direction and a connecting portion connecting the legs.
Each of the pair of legs is in contact with the front caster provided on the front end side, the rear caster provided on the rear end side, the stopper provided behind the front caster, and the leg portion and the connecting portion. It has a frame strut portion extending upward from the frame, a frame side plate portion composed of a plate-shaped member connecting the frame strut portion and the rear end side of the leg portion, and a waste liquid tray mounting portion on which the waste liquid tray is placed.
The tire lifter frame is held on the frame strut portion so as to be vertically movable by using the frame strut portion as a guide.
An automobile maintenance trolley, characterized in that the tire lifter and the stopper of the frame are driven by using compressed air supplied from the pneumatic circuit. The trolley for automobile maintenance according to claim 1, wherein a roller having a rotation axis parallel to the tire lifter arm is provided on each of the upper surfaces of the pair of tire lifter arms. 1. Car maintenance trolley described in 2. The tire lifter includes an air hydroconverter that generates a hydraulic pressure from compressed air supplied via the pneumatic circuit and an air hydro cylinder driven by the hydraulic pressure, and is characterized by being moved up and down by the air hydro cylinder. The automobile maintenance trolley according to any one of claims 1 to 3. The automobile maintenance trolley is provided with a tire dropout prevention stay for fixing the tire on the arm.
The automobile maintenance trolley according to any one of claims 1 to 4, wherein the tire fall-off prevention stay is detachably connected to the outer side surface of each of the arms. The workbench has a shaft receiver for mounting a shaft-shaped component on the upper surface of the workbench, and the shaft receiver is composed of a plurality of side view U-shaped members provided on the upper surface of the workbench. The trolley for automobile maintenance according to any one of claims 1 to 5, characterized in that.

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