JP2015039909A - Vehicle moving device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily move a vehicle which cannot travel autonomously by one worker.SOLUTION: A moving device main body 12 which is supported to one rear wheel 3 via an attachment 11 is supported so as to be oscillatory in a rotation center of the rear wheel 3, fore-and-aft casters 15, 16 are adjusted into floated states from a road face R by prescribed heights h by adjusters 17a, 17b in a state that the rear wheel 3 is grounded. When forwarding a vehicle 2 by rotating the rear wheel 3 by the drive of an electric motor 20, the front caster 15 of the moving device main body 12 is firstly grounded on the road face R, and the rear caster 16 is relatively floated. After that, when the rear wheel 3 starts to rotate, and its reaction force is supported by the caster 15, the rear wheel 3 is rotated, and the vehicle 2 is moved. A salient object d of the road face R is easily straddled by the ride-on of the front caster 15.

Description

  The present invention relates to a vehicle moving device that can be mounted on at least one tire of a vehicle to move the vehicle.

  As is well known, in a vehicle manufacturing factory, a maintenance shop, etc., when moving the premises with the vehicle assembled, the vehicle is moved without driving a drive source (engine, electric motor, etc.) mounted on the vehicle. A vehicle moving device is often used as a means for making this happen.

  As this type of vehicle moving device, a device that is interposed between the front two wheels or the rear two wheels and the road surface and operates the handle provided on the vehicle moving device to move the vehicle manually, or An electric motor is mounted, and an electric motor is known that is moved by the electric motor.

  For example, Japanese Patent Application Laid-Open No. 2000-327300 discloses a vehicle moving device that moves a vehicle to a test place where a collision test is performed. In the vehicle moving device disclosed in this document, an electric motor is mounted on a carriage, and a chuck member is connected to a rotating shaft that is connected to the electric motor via a chain.

  According to the technique disclosed in this document, the work vehicle connects the chuck member to the wheel of the rear tire of the driver's seat, drives the wheel with an electric motor, and operates the handle of the driver's seat. Thus, the vehicle can be moved alone to the test site.

JP 2000-327300 A

  In the technique disclosed in the above-described document, when the rear wheel tire is rotated by the electric motor and the vehicle is moved, the reaction force when rotating the rear wheel tire is two caster wheels provided before and after the carriage. Received at.

  However, the road surface of the caster wheel is not always flat even when the movement is limited to the premises, and there may be a raised step formed by laying a wiring protection cover or the like on the floor surface. . In the technique disclosed in the above-described document, the rear wheel on the driver's seat and the four front and rear caster wheels that move together with the rear wheel are both grounded on the road surface. There is an inconvenience that it is impossible to get over and it becomes impossible to move.

  In view of the above circumstances, the present invention can easily move a vehicle that cannot be self-propelled even by a single worker, and can easily get over even if a raised step is formed on the moving road surface. An object of the present invention is to provide an easy-to-use vehicle moving device.

  A vehicle moving device according to the present invention includes an attachment attached to a rotation center of a wheel, a moving device main body having a fixed plate connected to the attachment, and an electric motor fixed to the fixed plate and transmitting driving force to the wheel. And a caster provided in front of and behind the moving device main body, and an adjuster for adjusting the height of the caster, the moving device main body being swingable in the front-rear direction about the fixed plate, The casters are adjusted in height so as to float with respect to the wheels installed on the road surface via the adjusters.

  According to the present invention, the main body of the moving device is swingable in the front-rear direction around the fixed plate, and the height of the caster provided at the front and rear is adjusted to be in a floating state with respect to the wheels installed on the road surface. Therefore, even if a raised step is formed on the moving road surface, the moving device body can be easily overcome by swinging, so even a single worker can easily make a vehicle that is not self-propelled. It is possible to move to, and it is easy to use.

The schematic side view which shows the state which shows 1st Embodiment and attaches a vehicle moving apparatus to a rear wheel, and is moving the vehicle Same as above, front view with attachment attached to rear wheel Same as above, front view with vehicle moving device attached to rear wheel IV-IV sectional view of Fig. 3 The top view of the state which attached the vehicle moving device to the rear wheel Functional block diagram showing the configuration of the control box The front view of the state which showed 2nd Embodiment and attached the attachment to the wheel of a rear wheel Same as above, enlarged sectional view of the main part of the hook part

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

[First Embodiment]
1 to 6 show a first embodiment of the present invention. Reference numeral 1 in FIG. 1 denotes a vehicle moving device, which is attached to one of the rear wheels 3 of the vehicle 2 (left rear wheel in the figure). This vehicle 2 is a vehicle that is not equipped with a driving source such as an engine or an electric motor, or is not self-propelled for performing a collision test or the like, in which oil or fuel is not injected even if the driving source is installed. is there. Therefore, the worker A sits on the driver's seat, operates the handle 4, remotely operates the vehicle moving device 1 by the control box 5, and moves the vehicle 2 to the target location.

  As shown in FIGS. 2 and 3, the vehicle moving device 1 includes an attachment 11 attached to the rotation center of the tire wheel 3 a of the rear wheel 3, and a moving device main body 12 coupled to the attachment 11. As shown in FIG. 4, the rear wheel hub 6 to which the tire wheel 3a of the rear wheel 3 is attached has a hub wheel 6b fixed to the shaft end of the hub shaft 6a, and a hub bolt 6c is erected on the hub wheel 6b. Yes. The tire wheel 3a of the rear wheel 3 is attached to the hub bolt 6c, and the tire wheel 3a is fastened to the hub wheel 6b via a wheel nut (not shown).

  The attachment 11 has an attachment nut 11a that is screwed into the hub bolt 6c. The attachment nut 11a is rotatably supported with respect to the attachment plate 11b while being prevented from coming off. Since the attachment nut 11a is to be removed from the wheel nut and screwed into the hub bolt 6c, the attachment nut 11a is disposed on the same circumferential pitch as the hub bolt 6c as shown in FIG. In the present embodiment, the attachment nut 11a is set to be screwed to all the hub bolts 6c, but the attachment nut 11a is set to be fastened to two or three hub bolts 6c. May be. Therefore, in this case, two or three attachment nuts 11a are supported by the attachment plate 11b, and the hub bolt 6c that is not fastened by the attachment nut 11a is fastened by a wheel nut as usual.

  A boss 11c is projected from the center of the circumference of the attachment plate 11b where each attachment nut 11a is disposed, and a motor input shaft 11d is projected from the shaft end side axis of the boss 11c. Further, a support plate 11e is rotatably supported on the motor input shaft 11d via a bearing 11f. A motor fixing plate 13 is bolted to the support plate 11e. The motor fixing plate 13 is provided on the moving device body 12.

  As shown in FIGS. 3 to 5, the moving device main body 12 has a base frame 14, and casters 15 and 16 are supported on the front and rear of the base frame 14 via adjusters 17 a and 17 b. The front and rear casters 15 and 16 have a pair of left and right wheels 15a and 16a, respectively, and the pair of wheels 15a and 16a are rotatably supported by support shafts 15b and 16b via bearings (not shown). Further, the support shafts 15b and 16b are supported by the base frame 14 so as to be movable up and down via the adjusters 17a and 17b described above.

  Further, a battery box 14a is formed at the center of the base frame 14 in the front-rear direction, and a battery 18 is mounted on the battery box 14a. Further, the lower ends of the beam frames 19a and 19b are fixed to the front and rear portions of the base frame 14 by welding or the like, and the upper ends of the beam frames 19a and 19b are extended in directions close to each other to fix the motor described above. It is fixed to the plate 13 by welding or the like. An electric motor with a speed reducer (hereinafter simply referred to as “electric motor”) 20 is fixed to the motor fixing plate 13, and the motor input shaft 11 d described above is connected to the electric motor 20.

  The electric motor 20 is controlled by operating the control box 5 described above. The control box 5 has portable portability and is installed in the vicinity of the driver's seat, so that the operator A can operate while sitting on the driver's seat. As shown in FIG. 6, a motor controller 21 is built in the control box 5. On the other hand, the mobile device body 12 is provided with a motor drive circuit 22 (see FIG. 4). The motor drive circuit 22 is a drive signal corresponding to a PWM signal output from the motor controller 21 using the battery 18 as a drive source. Is applied to the electric motor 20.

  Further, a main switch 23, a speed control switch 24, and a forward / reverse switching switch 25 are arranged on the operation surface of the control box 5, and the motor controller 21 is activated by turning on the main switch 23. The speed control switch 24 varies the duty ratio of the PWM signal, whereby the voltage supplied to the electric motor 20 is varied and a desired traveling speed can be obtained. The forward / reverse selector switch 25 is a selector switch for instructing the motor controller 21 in the direction of rotation of the electric motor 20 (normal rotation, reverse rotation). In addition, a foot switch 26 can be connected to the control box 5. By connecting the foot switch 26, the ON / OFF of the electric motor 20 can be operated by stepping, and good operability can be obtained. I can do it.

  The motor controller 21 transmits a control signal to the electric motor 20 by wire or wirelessly, and the operator A can remotely control the operation of the electric motor 20 while sitting on the driver's seat.

  Next, the operation of the present embodiment having such a configuration will be described. When moving the vehicle 2 that is not self-propelled to a place where a collision test or the like is performed, first, as shown in FIG. 2, the attachment 11 is provided on one of the rear wheels 3 (the left rear wheel in this embodiment). Attach attachment plate 11b.

  A plurality of attachment nuts 11a are rotatably supported on the same circumference on the attachment plate 11b, and the existing wheel nuts that fasten the rear wheel 3 are removed from the attachment nuts 11a. Install. As a result, as shown in FIG. 4, the tire wheel 3a of the rear wheel 3 is fastened to the hub wheel 6b by the attachment nut 11a, and the attachment plate 11b is integrated with the hub wheel 6b via the attachment nut 11a.

  A motor input shaft 11d protrudes from the attachment plate 11b via a boss 11c, and a support plate 11e is rotatably supported by the motor input shaft 11d via a bearing 11f. A motor fixing plate 13 provided in the moving device main body 12 is bolted and fixed to the support plate 11e (see FIG. 4). Then, as shown in FIG. 4, the electric motor 20 fixed to the motor fixing plate 13 is fitted to the motor input shaft 11d, and the driving force can be transmitted.

  Next, the adjusters 15 and 16 adjust the heights of the front and rear casters 15 and 16 supported by the base frame 14 that supports the motor fixing plate 13 via the beam frames 19a and 19b. As shown in FIG. 3, in the present embodiment, the front and rear casters 15 and 16 are adjusted to a position where the front wheels 3 are lifted from the road surface R by a predetermined height h in a state where the rear wheels 3 are in contact with the road surface R.

  Then, the worker A sits in the driver's seat, releases the parking brake, etc. to make the vehicle 2 movable, and then turns on the main switch 23 of the control box 5 that he owns to incorporate the motor The controller 21 is activated. In this case, since the operator A can operate the control box 5 at hand, the rear wheel to which the vehicle moving device 1 is attached and the handle 4 do not have to be on the same side. Therefore, as shown in FIG. 1, even if the vehicle 2 having the vehicle moving device 1 attached to the left rear wheel 3 is a right-hand drive vehicle, there is no problem in the operation of moving the vehicle 2 of the worker A.

  Next, the speed control switch 24 is operated, a predetermined PWM signal is output from the motor controller 21 to the motor drive circuit 22, and a corresponding drive signal is output to the electric motor 20, thereby driving the electric motor 20 in a predetermined manner. Then, the electric motor 20 rotates the rear wheel hub 6 via the attachment 11.

  When the forward / reverse selector switch 25 is set to forward, the electric motor 20 rotates forward and the left rear wheel 3 tries to rotate in the forward direction (counterclockwise direction in FIG. 1). At this time, as shown in FIG. 3, since the front and rear casters 15 and 16 are set in a state of being lifted from the road surface R by a predetermined height h, the mobile device body 12 is within the range where the front and rear casters 15 and 16 are grounded. Can be swung freely. As a result, when the left rear wheel 3 tries to rotate in the forward direction, the moving device body 12 swings counterclockwise in FIG. 1, the front caster 15 is grounded to the road surface R, and the rear caster 16 is lifted. It becomes a state.

  Then, the left rear wheel 3 rotates in a state where the front caster 15 is pressed against the road surface R, and the vehicle 2 moves forward by the rotational force. The operator A operates the handle 4 to move the vehicle 2 to a desired position. At that time, as shown in FIG. 1, the rear caster 16 is in a floating state even when the wiring protection cover bulge d is present on the road surface R, and the front caster 15 is moved by the height of the caster 15 after that. Since it is swingable, the raised object d can be easily climbed over. Even if there is a slight level difference on the road surface R, the front caster 15 is only in contact with the road surface R, so that the followability to the road surface R is good. As a result, the worker A can move the vehicle 2 without detouring the protuberance d on the road surface R or worrying about a certain level difference, and the work efficiency can be improved.

  In this case, as shown in FIG. 6, if a foot switch 26 is connected to the motor controller 21, the operator A can step on / off the electric motor 20 and release his hand from the handle 4. Therefore, the movement and stop of the vehicle 2 can be operated, and good driving operability can be obtained.

  When the forward / reverse selector switch 25 is set to the reverse side, the electric motor 20 is reversely rotated, the rear caster 16 is grounded to the road surface R, the front caster 15 is lifted, and the left rear wheel 3 is rotated clockwise in FIG. The vehicle 2 moves backward by the rotation of the direction. At this time, if the electric motor 20 is turned on / off with the foot switch 26, better reverse driving operability can be obtained.

  When the vehicle 2 is moved to a place where a collision test or the like is performed, the moving device main body 12 is detached from the attachment 11 in the reverse order of the above-described procedure, and the attachment nut 11a provided on the attachment 11 is further removed. The existing wheel nut is fastened to the removed hub bolt 6c, and the moving operation is completed.

  As described above, in the present embodiment, the vehicle moving device 1 is attached to one of the rear wheels, and the worker A is seated in the driver's seat, and the vehicle 3 is operated by remotely operating the electric motor 20 with the control box 5 at hand. The vehicle 3 can be easily moved by one worker A. Further, since the vehicle moving device 1 is attached to the rear wheel hub 6 with the front and rear casters 15 and 16 being lifted from the road surface R by a predetermined height h, the rear caster 16 is lifted and the front casters 15 are moved forward. Since only the rear caster 16 is lifted and only the front caster 15 is grounded at the time of reverse traveling, even if there is a raised object d or some level difference on the road surface R, it can be easily overcome and good driving operability is achieved. Can be obtained.

[Second Embodiment]
7 and 8 show a second embodiment of the present invention. In the first embodiment described above, the attachment 11 is attached to the rear wheel hub 6, but in this embodiment, the attachment 31 is engaged with the rim 3b of the tire wheel 3a, and the driving force of the electric motor 20 is applied to the tire wheel. This is transmitted from 3a to the rear wheel 3. Since the mobile device body 12 has the same configuration as that of the first embodiment, description thereof is omitted. Further, the same components as those in the first embodiment are denoted by the same reference numerals, and the description is simplified.

  In the attachment 31 according to the present embodiment, holder support plates 32 are provided above and below the attachment plate 11b, and each holder support plate 32 moves in a vertical direction to a pair of guide rods 33 projecting from the upper and lower surfaces of the attachment plate 11b. It is supported freely.

  In addition, a tightening bolt 34 whose tip is rotatably supported on the upper and lower surfaces of the attachment plate 11b is screwed into the center of the holder support plate 32 in the width direction, and the tightening bolt 34 is rotated. Thus, the holder support plate 32 is supported by the pair of guide rods 33 and moves up and down. Further, a wheel fixing holder 35 is fixed on both sides of the holder support plate 32, and a hook 35a to be engaged with the rim 3b is formed at the tip of the wheel fixing holder 35.

  When connecting the attachment plate 11b to the tire wheel 3a, first, the motor input shaft 11d protruding from the rotation center of the attachment plate 11b is aligned with the center of the tire wheel 3a. Next, the hook 35a formed at the tip of each wheel fixing holder 35 is hooked on the rim 3b of the tire wheel 3a.

  Then, when the fastening bolts 34 are rotated and the holder support plate 32 is moved to the attachment plate 11b while being supported by the pair of guide rods 33, wheels fixed to both ends of the holder support plate 32 are provided. A fixing holder 35 is engaged with the rim 3b, and the rim 3b is clamped by four hooks 35b to fix the attachment plate 11b to the tire wheel 3a.

  Thereafter, similarly to the first embodiment, the motor fixing plate 13 provided in the moving device main body 12 is bolted and fixed to the attachment plate 11b. Then, the motor input shaft 11d projecting from the rotation center of the attachment plate 11b is fitted into the electric motor 20 fixed to the motor fixing plate 13, so that power can be transmitted. The subsequent position adjustments of the front and rear casters 15 and 16 by the adjusters 17a and 17b provided in the moving device main body 12 are the same as those in the first embodiment, and thus the description thereof is omitted.

  As described above, in this embodiment, the attachment plate 11b is fixed by being clamped to the rim 3b of the tire wheel 3a by the four hooks 35b. Therefore, the wheel nut of the rear wheel 3 is removed one by one and the hub bolt It is not necessary to fix the attachment plate 11b to 6c, and workability is good. In this case, the hook 35b may be hooked and fixed to the wheel spoke portion of the tire wheel 3a.

  The present invention is not limited to the above-described embodiment. For example, an in-vehicle battery may be used as a power source for the electric motor 20. In this case, since the battery 18 mounted on the mobile device body 12 can be omitted, the weight can be reduced.

1 ... vehicle moving device,
2 ... Vehicle,
3 ... Rear wheel,
3a ... tire wheel,
3b ... Rim,
5 ... Control box,
6 ... Rear wheel hub,
11, 31 ... Attachment,
11a ... Attachment nut,
11b ... Attachment plate,
11d: Motor input shaft,
11e ... support plate,
11f ... bearing,
12 ... the mobile device body,
13 ... Motor fixing plate,
15, 16 ... front and rear casters,
17a, 17b ... adjusters,
20: Electric motor,
21 ... Motor controller,
22 ... Motor drive circuit,
26 ... Foot switch,
32 ... Holder support plate,
35 ... Wheel fixing holder,
35a, 35b ... hooks,
A ... Worker,
d ... Uplift,
R ... road surface

Claims (5)

With an attachment mounted on the center of rotation of the wheel,
A mobile device body having a fixed plate coupled to the attachment;
An electric motor fixed to the fixed plate and transmitting driving force to the wheels;
Casters provided before and after the mobile device body;
An adjuster for adjusting the height of the caster,
The moving device body is swingable in the front-rear direction around the fixed plate,
The vehicle moving device according to claim 1, wherein the height of the caster is adjusted to be in a floating state with respect to a wheel installed on a road surface via the adjuster. The attachment is connected to a hub bolt;
2. The vehicle moving apparatus according to claim 1, wherein the fixing plate is provided at a rotation center of the attachment and supported by a motor input shaft connected to the electric motor via a bearing. The attachment is fixed by sandwiching the rim of the tire wheel,
2. The vehicle moving apparatus according to claim 1, wherein the fixing plate is provided at a rotation center of the attachment and supported by a motor input shaft connected to the electric motor via a bearing. The vehicle moving device according to any one of claims 1 to 3, wherein the control box for operating the electric motor has portability and can be operated by being disposed in the vicinity of the driver's seat. The vehicle moving device according to claim 4, wherein a foot switch for turning on / off an electric motor can be connected to the control box.

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