JP2014034314A - Wheel dolly of low level support type for vehicle maintenance - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a new wheel dolly for vehicle maintenance, capable of supporting a wheel even if the position of the wheel is in a height close to a floor level, and furthermore, enabling such an operation as lowering and placing thereof on a floor.SOLUTION: A wheel dolly C of a low level support type for vehicle maintenance of the present invention is equipped with a base frame 1 and a wheel rack 2, and is a device for placing a wheel W detached/attached from/to a vehicle V on the wheel rack 2 and making a good environment for maintenance work to the vehicle V. A base frame 1 has a work access space S with a back surface opened fully. Alternatively, the wheel rack 2 has a lifting range ranged from the position close to a floor level to a lifting-up operation position. Furthermore, a lifting device 5 for lifting and driving the wheel rack 2 is provided at a position out of the work access space S.

Description

  The present invention provides a low position for vehicle maintenance, for example, to smoothly support a wheel that has been removed during an inspection around a wheel and maintain a vehicle such as a truck so as to reduce the burden on the operator. This is related to the support type wheel dolly.

  For example, in regular inspections of large trucks and the like, all wheels are removed in a lift-up state where the vehicle is lifted, and inspections around the axle including the drive system, braking system, and rolling support system are performed. At this time, in large trucks and the like, wheels including tires and wheels have a considerable weight, and a support device called a wheel dolly is used to support the detaching operation. This can be broadly classified into a floor moving cart type and a hanging type in which a support member is suspended from above a work pit. Of these, the suspension type should be said to be a factory facility that exceeds the scope of maintenance support devices or tools, and therefore, a floor surface type wheel dolly is generally popular. However, even in this type, inconveniences have been pointed out from the actual work at the site in the following points.

In other words, the floor-moving type has a wheel rack that supports the wheel directly above the floor surface, and with the vehicle to be serviced slightly lifted up so that the wheel is lifted off the floor surface, the wheel rack is placed below the wheel. The wheel, with the necessary bolts and nuts removed, is received in the wheel rack and moved out of the work space.
With this method, the vehicle is lifted down each time the wheel is attached / detached, while the vehicle is lifted up so that the worker can take a natural working posture during other inspections. As a result, depending on the work content, the vehicle is repeatedly lifted up and down, and in addition to this, when transferring the wheel to the wheel rack, the operator is forced to take a crouching posture. Is done.
Focusing on such inconveniences of the conventional method, the present applicant has developed a new wheel dolly capable of receiving the wheel and loosely tightening the bolt and nut related to the wheel mounting while the vehicle is lifted up. Already a patent application (prior patent application; Japanese Patent Application No. 2011-134421), and its actual product has been well received by the market.
By the way, the wheel dolly according to this prior art is mainly intended to work on a vehicle in a lifted-up state while maintaining the height as it is, so that the wheel support position is also sufficiently high from the floor. Yes.

However, as an actual working state, for example, when the vehicle is not lifted up completely and the wheel is slightly lifted from the floor surface, or when the wheel is detached or removed, the brake drum is further removed from the removed wheel, In the case of performing the polishing or the like, there is a case where it is necessary to realize a usage method in which the wheel is supported near the floor surface and further lowered on the floor surface.
When such a method of use is required, the technology of the prior patent application developed by the present applicant cannot lower the supported wheel to the floor surface. Needed a separate auxiliary wheel dolly that can be supported by.
In addition, in the case of the conventional method, whether it is a wheel dolly or an auxiliary wheel dolly, the vehicle inspection is completed with the wheels on, and auxiliary wheel dollies for the number of removed wheels must be prepared. .

Japanese Patent Application No. 2011-134421 (published patent application unpublished)

  The present invention has been made in consideration of these various backgrounds, and even when the wheel position is at a height close to the floor surface, it can be supported and further operated to be lowered on the floor surface. The aim is to provide a new vehicle maintenance wheel dolly that has been made possible.

A low position support type wheel dolly for vehicle maintenance according to claim 1 includes a base frame that is movable on a floor surface, and a wheel rack that is provided on the base frame so as to be movable up and down by driving of a lifting device. A device for placing a wheel to be attached to and detached from a vehicle on a wheel rack to reveal a good environment for maintenance and maintenance work on the vehicle, wherein the base frame is a pair of left and right base frames And a pair of left and right post frames supported on the lower side of the base frame, and a cross member connecting the upper and lower sides of each post frame, and the base frame has a work access whose back is sufficiently open. The wheel rack, on the other hand, has its lifting range as the range of the lift-up work position from the floor close position,
Further, the elevating device for driving the wheel rack to be raised and lowered is provided at a position outside the work access space.

  The vehicle maintenance low position support type wheel dolly according to claim 2 is provided with a pair of right and left along the post frame with respect to the jack body constituting the lifting device in addition to the requirements of claim 1. Is a feature.

  According to a third aspect of the present invention, in addition to the requirements of the first or second aspect, the wheel rack includes a fork-shaped rack arm that projects in parallel to a pair of left and right fronts. A wheel support member is used, and the wheel support surface is an inclined surface adapted to the outer peripheral shape of the wheel.

  According to a fourth aspect of the present invention, in addition to the requirements of the first, second, and third aspects, the wheel rack is provided with a tire guard that protrudes to the tire side above the wheel rack. It is characterized by being.

  According to a fifth aspect of the present invention, in addition to the requirements of the first, second, third or fourth aspect, the base frame is provided with a drive shaft removed from the vehicle to be maintained. A shaft storage holder having a lower holder cup for storage and an upper holder hook is provided, and the drive shaft is held in an upright state.

  The vehicle maintenance low position support type wheel dolly according to claim 6, in addition to the requirements of claim 1, 2, 3, 4 or 5, a tool used at the base of the wheel rack at the time of maintenance work A utility rack for holding the removed parts and the like is provided, and a grip portion is provided behind the utility rack.

According to the first aspect of the present invention, since the range in which the wheel rack can be lowered is set to the position close to the floor surface, the wheel removed from the vehicle can be lowered on the floor surface. As a result, the work forms can be diversified, and the empty wheel dollies can be reused, and the number of necessary wheel dollies can be reduced.
Of course, since the wheel rack can be raised to the lift-up work position, maintenance work can be performed in a natural work posture with no burden on the operator.

  According to the second aspect of the present invention, a work access space that is an opening in the front-rear direction of the base frame of the wheel dolly can be sufficiently secured, and maintenance work can be performed smoothly. In addition, there is a wheel rack that is supported by the left and right sides to move up and down, so that the overall balance of the device is good.

  Further, according to the invention described in claim 3, the pair of rack arms that directly support the wheels have inclined surfaces on the inside, so that the wheels can be supported stably and the wheels can be floored. It can be supported even when slightly lifted from the surface.

  According to the invention described in claim 4, since the tire guard is provided above the wheel rack, and the tire guard first comes into contact with the tire during the operation, a part of the wheel dolly is directly maintained. A safe operation can be performed without contacting the vehicle that is receiving the operation. Further, when the tire guard is used to support a narrow single tire or the like, it can be leaned and handled in a stable state.

  According to the invention described in claim 5, the base frame of the wheel dolly includes the shaft holder member and holds the drive shaft in an upright state, and the drive shaft that is pulled out particularly in a low position operation is provided. Natural storage work is realized when storing during maintenance work.

  According to the invention described in claim 6, since the utility rack is provided at the center of the base portion of the wheel rack and the grip portion is provided by using the utility rack, for example, the front wheel which tends to become unstable on the wheel rack. While holding the (single wheel) with one hand, the wheel dolly center can be pulled and its smooth movement can be achieved.

It is explanatory drawing which shows the use condition of the low position support type wheel dolly for vehicle maintenance of this invention. It is a side view of an apparatus same as the above. It is the side view and partial perspective view which decomposes | disassembles and shows the main members of an apparatus same as the above. (A) is a top view of the same apparatus, (b) is a rear view of the same apparatus. It is a rear view which decomposes | disassembles and shows the main members of an apparatus same as the above, (a) shows a base frame, (b) shows a wheel rack, (c) shows a rack arm. The wheel rack of this apparatus is shown in one use state, (a) is a plan view and (b) is a side view. It is a skeletal back view of the Example which performs the raising / lowering shift of a wheel rack with one cylinder.

  The mode for carrying out the present invention includes an embodiment described below as well as various improved embodiments based on this technical idea.

Hereinafter, a low position support type wheel dolly C for vehicle maintenance according to the present invention will be described in detail based on the illustrated embodiment.
First, the outline of the state of use of this product will be described. The wheel dolly C is used for maintenance around the wheels of the vehicle V that has entered the vehicle maintenance factory, for example, as shown in FIG. When the wheel W to be supported is supported, and when the maintenance around the axle is performed, the removed wheel W is moved so as not to support the work.

The general maintenance of the wheel W will be outlined. First, the wheel W is supported in a fully floating state with respect to a housing H that houses a driving member such as a differential gear and a drive shaft D of the vehicle V in the case of a middle or large freight vehicle, for example. Often tires. About such a rear wheel, the drive shaft D is pulled out from the center in the state of a double tire, and then is supported by the wheel dolly C with the double tire. Further, the work is continued while the drive shaft D is held by the wheel dolly C in consideration of maintainability.
In the case of such a large vehicle, the wheel W is in a fully floating state with respect to the wheel support member including the housing H as described above. That is, the wheel W is directly supported on the outer periphery of the end portion of the housing H through a bearing so as to support the load in the vertical direction on the housing H, while the drive shaft D carries the load of the vehicle V. The wheel W is driven by receiving only the rotational load purely without receiving it.

Hereinafter, the wheel dolly C of the present invention will be described.
This is broadly divided into a base frame 1, a wheel rack 2 attached to the base frame 1 so as to be movable up and down, and a base frame 1 for making the wheel dolly C movable. The main components are the rolling wheel device 3 and the lifting device 5 that lifts and lowers the wheel rack 2.

First, the base frame 1 will be described. This is an L-shaped frame in a side view, and is formed so that a post frame 11 stands upright at the rear end of a pair of left and right base frames 10 that are horizontally arranged near the floor surface. Specifically, the base frame 10 and the post frame 11 are integrally combined with a rear wheel bracket 10A formed as a part of the base frame 10 and projecting rearward as an auxiliary gusset. Further, a reinforcing pipe 10B having an inverted L shape in side view is also provided between the rear wheel bracket 10A and the post frame 11 from above the rear end.
A handle pipe 12 is disposed on the post frame 11 so as to be substantially parallel to the post frame 11 on the rear side in consideration of convenience of operation.
The handle pipe 12 is not symmetrical in terms of mounting a drive system member of the lifting device 5 described later on the base frame 1. As an example, when viewed from the rear of the wheel dolly C, the left side has a shape extending from the upper side to the rear wheel bracket 10A, but the right side handle pipe 12 is formed at a position lowered from the upper side to the middle. As a result, the right handle pipe 12 has a certain space between the lower end thereof and the reinforcing pipe 10B, and the drive system member of the lifting device 5 is mounted thereon.

In addition, before and after the wheel dolly C, the side on which the wheel W is supported is defined as the front side, and the side where the worker M is located via the base frame 1 is defined as the rear side.
The pair of left and right base frames 10 and post frames 11 are integrally assembled in a frame shape by a cross member 13, and the cross member 13 is a main member of an upper cross member 13A and a lower cross member 13B. And
As a result of such a configuration, the base frame 1 is formed in a vertically long rectangular frame shape by the pair of post frames 11 and the upper and lower cross members 13 (13A, 13B) when viewed from the front-rear direction. A space that is largely open in the frame is defined as a work access space S. In other words, in the work access space S, the worker M inspects various equipment around the wheel W located in front of the wheel dolly C from the rear.

Further, a shaft storage holder 15 is provided on one side of the post frame 11 in the machine frame 1 as an example, on the left side when viewed from the rear.
The shaft storage holder 15 includes a holder cup 15A disposed below and a holder hook 15B disposed above the shaft storage holder 15, and stores the drive shaft D removed for maintenance in a leaning state.
In addition, a perforated plate is stretched between the post frame 11 and the handle pipe 12 or the reinforcing pipe 10B. Accordingly, the tool panel 16 is used to hook appropriate hooks, bucket-shaped storage containers, mounting shelves and the like (collectively referred to as a utility rack 161), and various tools required by the worker M are used here. For example, an impact wrench, socket wrench, measuring device, grease gun, oil container, etc. are accommodated. Of course, the utility rack 161 may be fixedly provided on the base frame 1.

Next, the wheel rack 2 that is supported by the base frame 1 so as to be movable up and down will be described. The wheel rack 2 includes an elevating frame 20 as shown in FIG. 2, and the elevating frame 20 is a horizontal U-shaped member that is open from the front or rear view, Specifically, a pair of left and right vertical frames 201 constitutes a strength member in the vertical direction and is connected by a lower horizontal frame 202.
The elevating frame 20 is provided with a total of four guide wheels 21 arranged in a pair of upper and lower left and right, which roll in the post frame 11 of the base frame 1 to provide vertical operation guidance. doing. A center tray 161 </ b> A that is a form of the utility rack 161 is fixed to the upper surface of the lower horizontal frame 202. This is used to place bolts and nuts removed during maintenance around the wheel W, or to temporarily place tools.
The center tray 161A, which is the utility rack 161, forms a gripping portion 161B by cutting out the rear frame face plate into a hole shape at the center in the width direction. Of course, the shape of the grip portion is not limited to such a notch-shaped shape, and various shapes such as a handle having a rod-like material bent into a U shape and fixed to the center tray 161A can be used.
A pair of left and right fork-shaped rack arms 25 that directly support the wheels W with respect to the lifting frame 20 are attached. The rack arm 25 is constituted by a pipe having a triangular cross section on which the wheel W is directly mounted, and has an inclined surface 25A in which the inner sides facing each other in a pair of left and right are substantially matched to the shape of the tire outer periphery. Yes.

  Next, the tire guard 28 provided on the left and right vertical frames 201 will be described. The purpose of providing the tire guard 28 is to prevent the wheel dolly C from excessively moving forward during work and damaging the side panel of the vehicle V being inspected. Due to the presence of this, the wheel dolly C always comes into contact with the side surface of the tire first. That is, the tire guard 28 is provided with an abutting portion 281 protruding in a vertically long U shape in a side view, and has a slide portion 282 above and below it. This slide portion 282 is fitted into the guide sleeve 203 in the left and right vertical frame 201 so that the left and right approach widths can be adjusted, and has an operation portion 283 on the outside thereof. Still another object of the tire guard 28 is that the wheel W may become unstable on the rack arm 25 when, for example, a single tire type wheel W is removed when the wheel W to be described later is removed. This is because W is leaned against the tire guard 28.

Next, the rolling wheel device 3 for making the wheel dolly C movable will be described. The rolling wheel device 3 is attached to the base frame 10 in the base frame 1, and includes a front rolling wheel 31 as a fixed wheel and a rear rolling wheel 32 to which a so-called universal caster is applied. The rear rolling wheel 32 is used so that the wheel dolly C can be used in a state where a brake is applied to the rear rolling wheel 32 by providing a stopper pedal 32A so as not to cause inadvertent movement.
It should be noted that the front rolling wheel 31 may be configured as a free caster or a mechanism having a stopper (brake) function.

Next, the lifting device 5 for shifting the wheel rack 2 so as to be movable up and down with respect to the base frame 1 will be described. The lifting device 5 is for lifting and lowering the wheel rack 2 by shifting the chain up and down by extending the jack body 51.
First, a pair of jack main bodies 51 are provided in a raised state at the rear of the base frame 10 so as to follow each post frame 11 in the base frame 1, and further at a rear intermediate height position of the pair of post frames 11. A pump 52 is provided. In the pump 52, hydraulic oil is appropriately sent to the jack body 51 by the operation of the hand lever 521, and the pump 52 is extended. Further, the pump 52 is provided with a release lever 522.
The jack body 51 is provided with a sprocket 54 at the upper end of a movable rod 53 that is a cylinder rod, and a link chain 55 is wound around the sprocket 54. Specifically, the link chain 55 has one end attached to the post frame 11 of the base frame 1 as a frame fixing portion 551 and the other end fixed to the wheel rack 2 as a movable length fixing portion 552. Yes. As a result of such a configuration, the wheel rack 2 is moved up and down with a stroke twice that of the movable rod 53. In addition, the raising / lowering stroke of the wheel rack 2 was about 930 mm as an example in the actual machine of this invention. In consideration of the height difference for each worker M and the diameter difference for each wheel W, an appropriate set height of the rack arm 25 can be obtained. Basically, the worker M corresponds to the case where the vehicle V is almost lifted up, and the worker M works while maintaining a natural standing posture. For example, the floor height at the point is 16 mm at the lower edge of the support arm 251 and the floor height at the top dead center is 950 mm.

The wheel dolly C of the present invention has the above-described configuration and is used as follows.
First, the vehicle V to be maintained is lifted up to a higher position by a lift L as appropriate, in addition to a state where the wheel W is slightly lifted from the floor surface. This lift-up is performed so that the maintenance work can be performed in a so-called standing posture so that the inspection of the underside of the vehicle V does not take an unnatural posture for the worker M. Accordingly, in the inspection itself, in addition to various inspections around the wheel W, inspections and maintenance around the engine and the like may be performed simultaneously by a plurality of workers M. As an operation related to the wheel W, first, the wheel dolly C of the present invention is brought close to the wheel V in the vehicle V in which the wheel W is lifted.
At this time, the height of the wheel rack 2 in the wheel dolly C is set according to the height of the lifted wheel W. In the present embodiment, the set height of the rack arm 25 in the wheel rack 2 is 16 mm to 950 mm from the floor surface, and the lift-up work is performed from substantially the entire range of the wheel height during maintenance, that is, the position close to the floor surface. It can correspond to the range up to the position.
Here, the lift-up work position is also described in the claims, but it means a high work position when the vehicle V is lifted up sufficiently, and is limited by specific numerical values. It is not something.
Then, as already outlined, in order to remove the drive shaft D fixed to the end of the wheel W by a plurality of bolts, those screws are loosened as appropriate with an impact wrench or the like. At this time, the base frame 1 is provided with a tool panel 16, and an appropriate utility rack 161 can be installed here to prepare tools necessary for the work. Is possible. In addition, in this work, the base frame 1 is in a state in which the work access space S is sufficiently open, so that the position where the worker M can face from the front of the wheel W is secured, and the worker M cannot be forced. Does not require a special working posture.

In addition, after removing the fixing bolts and the like of the drive shaft D in this way, the drive shaft D is pulled out from the housing H. The removed drive shaft D is stored in a shaft storage holder 15 provided on the base frame 1.
Specifically, one end of the drive shaft D is inserted into the lower holder cup 15A, and the drive shaft D is stored in a state where the drive shaft D stands above the holder cup 15B so as to lean against the holder hook 15B.
In addition, small parts such as bolts and nuts removed at this time are preferably placed on a tray-shaped center tray 161 </ b> A provided on the lower horizontal frame 202.

In this state, the wheel W is pulled out from the housing H. At this time, the wheel rack 2 supported by the post frame 11 is supported by the height of the rack arm 25 under the operation of the lifting device 5. The arm portion 251 is set to a position that supports the lower side of the wheel W. That is, the height of the wheel rack 2 is set by moving the link rack 55 wound around the sprocket 54 attached to the movable rod 53 and moving the wheel rack 2 up and down by operating the lifting device 5. The
At this time, in the present embodiment, the wheel rack 2 can be lifted and lowered in a balanced manner by the pair of left and right jack bodies 51.

In this manner, the wheel W is pulled out from the housing H by using an appropriate pulling tool while the wheel W is supported on the wheel rack 2. The state at this time is due to the full floating structure of the wheel W, and in the case of a large truck that usually employs double tires, it is possible to remove the wheels with the double tires fixed to the brake drum. Made. On the other hand, on the housing H side, the brake shoe related member that performs the braking action remains in the brake drum. After removing the wheel W from the vehicle V and placing it on the wheel dolly C in such a state, the wheel W is moved to a position that does not hinder the inspection work of the axle-related members, shock absorbers, etc. Therefore, a good environment is revealed.
Particularly in the present invention, since the set height of the wheel rack 2 can be lowered to the position close to the floor surface, the wheel W is moved to the wheel rack 2 at the lift-up work position when handling the vehicle V that has been lifted up. Even if it is received, the wheel W can be lowered to the floor. As a result, the remaining wheel can be removed again with the free wheel dolly C.
When the wheel dolly C is moved, the rolling wheel device 3 attached to the base frame 10 of the base frame 1 can act and can be freely transported to an appropriate position.

In attaching the wheel W, the wheel W is attached to the housing H by an operation almost opposite to the removed state. Further, in these operations, the tire guard 28 is arranged in a state of protruding forward, and even when the support arm portion 251 of the rack arm 25 is inserted under the wheel W, the tire guard 28 is first attached to the tire side surface. It will be in the state which contacts. As a result, the wheel dolly C does not come into direct contact with the vehicle body and the side surface of the vehicle body is not damaged. Further, when the tire guard 28 is used and a wheel W of a single tire having poor stability is set as a maintenance object, the wheel W is used to lean against the tire guard 28.
In particular, when removing the wheel W of the single tire, when the wheel dolly C is moved away from the vehicle V while supporting the unstable wheel W on the rack arm 25 with one hand, as shown in FIG. The wheel dolly C can be moved by grasping the grip portion 161B of the fixed center tray 161A with the other hand. At this time, the gripping portion 161B is provided in the center, and there is no situation in which the wheel dolly C moves with its direction bent.

  Since the wheel dolly C can lower the received wheel W to the floor in this way, for example, depending on the scale of the maintenance shop, for example, at least two units per vehicle V can be prepared. Therefore, the workability can be sufficiently improved.

[Other embodiments]
The present invention is based on the embodiment described above as one basic technical idea, but the following modifications can be considered.
First, as the lifting device 5, a jack type device is used, but a lifting shift cylinder using an electric motor or an air-operated air cylinder can be used as appropriate.
In the embodiment described above, the operation of the pump 52 is manual, but this may be a pump operation using compressed air. In this case, the compressed air is guided to the wheel dolly C from the air pipe provided in the maintenance shop, and the pump operation is performed. Further, the connection socket can be branched to operate the air impact wrench or the like.

  Further, with respect to the cylinder-type jack body 51 in the lifting device 5, it is possible to shift the wheel rack 2 with only this one. That is, as shown in FIG. 7 in terms of the skeleton, a cable or chain 550 having an appropriate strength is used, both ends thereof are fixed to the frame fixing portion 551, and a pair of left and right turn pres P1 and P2 are arranged above the base frame 1. Then, this is wound, and the idle pulleys P3 and P4 provided on the wheel rack 2 are suspended on the left and right loops below. Further, a shift pulley P5 of the jack body 51 arranged vertically on one side is arranged so as to push up the cable or chain 550, and when the shift pulley P5 is lifted, the idle pulleys P3, P4 are moved with a stroke corresponding thereto. Rises and the wheel rack 2 is shifted upward.

C wheel dolly D drive shaft H housing L lift S work access space P1 turn pulley P2 turn pulley P3 idle pulley P4 idle pulley P5 shift pulley

V vehicle W wheel M worker

DESCRIPTION OF SYMBOLS 1 Base frame 2 Wheel rack 3 Rolling wheel apparatus 5 Lifting apparatus

1 Base frame 10 Base frame 10A Rear wheel bracket 10B Reinforcement pipe 11 Post frame 12 Handle pipe 13 Cross member 13A Upper cross member 13B Lower cross member

15 Shaft storage holder 15A Holder cup 15B Holder hook

16 Tool panel 161 Utility rack 161A Center tray 161B Grip part

2 Wheel rack 20 Elevating frame 201 Left and right vertical frame 202 Lower horizontal frame 203 Guide sleeve 21 Guide wheel 25 Rack arm 25A Inclined surface

28 Tire guard 281 Contact part 282 Slide part 283 Operation part

3 Rolling wheel device 31 Front rolling wheel 32 Rear rolling wheel 32A Stopper pedal

5 Lifting Device 51 Jack Body 52 Pump 521 Hand Lever 522 Release Lever 53 Movable Rod 54 Sprocket 55 Link Chain 550 Chain (or Cable)
551 Frame fixing part 552 Movable length fixing part

Claims (6)

A base frame that is movable on the floor surface and a wheel rack that is provided on the base frame so as to be able to move up and down under the drive of the lifting device. A wheel that is attached to and detached from the vehicle is placed on the wheel rack, and the vehicle is moved to the vehicle. Is a device for presenting a good environment for maintenance and maintenance work of
The base frame comprises a pair of left and right base frames, a pair of left and right post frames supported by the base frame below, and a cross member connecting the two above and below each post frame,
The base frame has a work access space whose back is sufficiently open, while the wheel rack has its lifting range from the position close to the floor surface to the range of the lift-up work position,
Furthermore, the lifting device for raising and lowering the wheel rack is provided at a position out of the work access space, and is a low position support type wheel dolly for vehicle maintenance.
The low position support type wheel dolly for vehicle maintenance according to claim 1, wherein a pair of right and left jack bodies constituting the lifting device is provided along the post frame.
2. The wheel rack according to claim 1, wherein a fork-shaped rack arm projecting in parallel with a pair of left and right fronts is used as a wheel support member, and a wheel support surface is an inclined surface adapted to a wheel outer peripheral shape. Or the low position support type wheel dolly for vehicle maintenance described in 2.
4. A low position support type wheel dolly for vehicle maintenance according to claim 1, wherein the wheel rack is provided with a tire guard projecting toward the tire side above the wheel rack.
The base frame is provided with a shaft storage holder having a lower holder cup for storing the drive shaft removed from the vehicle to be maintained and an upper holder hook, and holds the drive shaft in an upright state. 5. The low position support type wheel dolly for vehicle maintenance according to claim 1, 2, 3 or 4.
  A utility rack is provided in the center of the base of the wheel rack to hold tools used during maintenance work, removed parts, etc., and a grip is provided behind the utility rack. The vehicle maintenance low position support type wheel dolly according to claim 1, 2, 3, 4 or 5.

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