JP2000171355A - Wheel fixing mechanism for parked vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make the set, fixation and removal of a vehicle performable in a short time in a wheel fixing mechanism for parked vehicle used for a single- axis chassis dynamometer device. SOLUTION: Guide rails 7, 7 arranged on both lateral sides of a vehicle parking area S, a slide member 10 to be reciprocated by a first driving means with brake 13 is provided on each of the guide rails 7, 7, a guide body 19 having a driven wheel fixing stopper 20 is provided in such a manner as to be capable of reciprocating in the lateral direction of a parked vehicle 4 relative to the slide member 10, and a second driving means with brake 24 for reciprocating the guide body 19 to switch the stopper 20 to a wheel constraining position S and a constraint releasing position Y is provided to constitute a wheel fixing mechanism 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fixing mechanism for a driven vehicle on both left and right sides of a parked vehicle having driving wheels mounted on a rotating drum of a single-shaft chassis dynamometer device.

[0002]

2. Description of the Related Art The above-mentioned uniaxial chassis dynamometer device is for mounting a driving wheel of a vehicle on a rotating drum connected to a dynamo body and performing a dynamic running performance test of the vehicle. A wheel fixing mechanism for fixing driven wheels on both the left and right sides of the vehicle parking area is provided to restrain the parked vehicle entering the parking area from moving in the front-rear direction.

FIG. 7 shows a conventional wheel fixing mechanism for a single-axis chassis dynamometer device. This wheel fixing mechanism 51
A pair of guide rails 53, 53 are provided on both left and right sides of the vehicle parking area S along the side of the parked vehicle 52, and a pair of wheel fixing means 54, 54 are provided on each of the guide rails 53, 53. In addition, the wheel fixing means 54, 54 are configured as follows in a mutually different manner.

That is, a slide member 5 is provided on each of a pair of guide rails 53 provided on both left and right sides of the vehicle parking area S so as to be able to reciprocate along the guide rails 53.
5, a guide member 56 is provided on the slide member 55 so as to be able to reciprocate in the width direction of the parked vehicle 52, and a stopper 58 for fixing a driven wheel 57 to the guide member 56 is provided. With the movement of the body 56, the stopper 58 can be switched between a wheel restraint position and a restraint release position.

According to the wheel fixing mechanism 51 having the above-described structure, the stopper 58 is switched to the position for releasing the restraint of the driven wheel to eliminate a step on the floor surface of the vehicle parking area S. Also, the vehicle 52 can easily enter the parking area S.

Then, the vehicle 52 enters the parking area S, and the vehicle 52 is placed on a rotating drum 59 connected to the dynamo body.
After the drive wheels 60, 60 are mounted, the guide body 56
Is moved so as to enter the vehicle parking area S, the stopper 58 is switched to the restrained position X of the driven wheel 57, and the stopper 58 is moved along the guide rail 53 so as to abut the driven wheel 57. The sliding member 55 is moved to tighten the bolt a on the guide rail 53 while the guide member 56 is tightened.
To the slide member 55 to complete the installation and fixing of the vehicle 52 that has entered the vehicle parking area S, and the vehicle 52 is removed from the vehicle parking area S by the reverse operation. be able to.

[0007]

However, in the above-described conventional wheel fixing mechanism 51, the operation of moving the stopper 58 by the guide body 56 and the operation of moving the stopper 58 and the guide body 56 are described.
Since the operation of moving the slide member 55, which has become a heavy object with the above, is performed manually, extremely heavy labor is required, and in addition, a cumbersome operation of aligning the stopper 58 is required. was there.

Further, bolting work for the slide member 55 and the guide body 56 is necessary, and the longer the number of bolts, the longer the time required for fixing and releasing the fixing. Including the time for performing the above operations, it took a lot of time to install and remove the vehicle 52 in the vehicle parking area S.

[0009]

SUMMARY OF THE INVENTION The present invention has been made in view of such circumstances, and a wheel fixing mechanism for a single-shaft chassis dynamometer device has the following features.
A pair of guide rails are arranged on both left and right sides of the vehicle parking area along the side of the parked vehicle, and each of the guide rails is provided with a pair of wheel fixing means, and the wheel fixing means, A slide member capable of reciprocating along the guide rail, first drive means with a brake for reciprocating the slide member, and a guide capable of reciprocating in the width direction of the parked vehicle with respect to the slide member Body, a stopper provided for fixing the driven wheel provided on the guide body, and a second drive unit with a brake for reciprocating the guide body to switch the stopper between a wheel restraint position and a restraint release position. The feature is that it consists of.

According to the above-mentioned characteristic configuration, each of the guide member provided with the slide member and the stopper is provided with the first member.
And by the second brake-equipped drive means, when switching the stopper between the wheel restraint position and the restraint release position without any work fatigue,
In addition, since the driving means is equipped with a brake and has a position fixing function, no troublesome bolt fixing work is required at all, and the installation and fixing of the vehicle entering the parking area and the vehicle parking area Removal of the vehicle can be performed easily in a short time.

Preferably, a first sensor for detecting that the stopper has faced a predetermined position with respect to a driven wheel of a parked vehicle is provided in each of the wheel fixing means, A second sensor for detecting that the stopper abuts on the driven wheel, wherein the first and second driving units are configured to stop driving based on detection information from each sensor, According to such a configuration, the fixed installation of the vehicle that has entered the vehicle parking area can be automatically performed.

More preferably, a first fixing means for fixing the slide member to the guide rail and a second fixing means for fixing the guide body to the slide member are provided. The slide member and the guide body are configured to be fixed based on detection information of stopper contact from the second sensor.

[0013] That is, although the drive means for the slide member and the guide body are each provided with a brake and have a function of fixing the position, the drive means is erroneously operated to switch the stopper to the state of releasing the restraint. Then, since there is a concern that the vehicle may run away, it is desirable to separately provide the above-described first and second fixing means to prevent accidental switching of the stopper to release the restraint.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. FIGS. 1 and 2 show a wheel fixing mechanism 2 provided in a single-axis chassis dynamometer device 1. The single-axis chassis dynamometer device 1 is mounted on a rotating drum 3 connected to a dynamo body (not shown). Vehicle 4
Is mounted to perform a dynamic running performance test of the vehicle 4.

On the other hand, the wheel fixing mechanism 2 fixes the left and right driven wheels 6 of the vehicle 4 on which the driving wheels 5 are mounted on the rotary drum 3 separately, and restrains the vehicle 4 from moving in the front-rear direction. A pair of guide rails 7 and 7 are arranged on the left and right sides of the vehicle parking area S so as to face the left and right driven wheels 6, respectively, in the front-rear direction of the vehicle 4, and two sets are integrally formed. Wheel fixing means 8 for fixing left and right driven wheels 6
A and 8B are provided so as to be able to reciprocate along guide rails 7 and 7, respectively.

In this embodiment, the above-mentioned guide rails 7, 7 are provided with dovetail grooves 9 and are embedded in the floor F, so that the upper surface of the rail is flat with the floor F.

On the other hand, the wheel fixing means 8A and 8B are
Since the configuration is the same and the configuration is different, the specific structure of the right wheel fixing means 8A on the front side of the right driven wheel 6 will be described with reference to FIGS. Will be explained.

In these figures, reference numeral 10 in the figures denotes a slide member provided with four (in any number of) wheels 11 on both left and right sides, and two through holes 12 penetrating in the vertical direction.
The first drive means (for example, a pulse motor) 13 with a brake is provided on one of the wheels 11.
Are connected.

Two sets 14 (one set may be used) for fixing the slide member 10 to the guide rail 7 are provided.
Of the screw shaft 1 via the coupling 15
6 is connected to its screw shaft 1
6 is engaged with the dovetail groove 9 from the through hole 12,
The dovetail groove 9 is mounted on the slide member 10.
A slide block 18 slidable along the screw shaft 16 is screwed onto the screw shaft 16, and the slide block 18 is tightened by the motor 17 so that the slide member 10 is fixed to the guide rail 7. I have.

The slide member 10 is provided with the dovetail groove 9.
Is reciprocally movable along the guide rail 7 on the basis of the throttle block 18 engaged with the guide rail 7 and by the first driving means 13 with a brake.

Reference numeral 19 denotes a guide body provided with a wheel stopper 20 which is slightly wider than the wheel width of the driven wheel 6. A guide block 22 having a horizontal flange 21 provided on the upper side is parked with respect to the slide member 10. The guide body 19 is formed in a shape sandwiching the horizontal flange 21 while being provided in the width direction of the vehicle 4.
Is arranged so as to be able to reciprocate in the width direction of the parked vehicle 4 along the horizontal flange 21, and a caster for preventing the free end of the guide body 19 from hanging down at the free end of the guide body 19. Wheels 23 are provided.

Reference numeral 24 denotes a second driving means with a brake for switching the stopper 20 between the wheel restraining position X and the restraint releasing position Y, and a rack is mounted on the slide member 10 along the side of the horizontal flange 21. The guide body 19 is provided with, for example, a pulse motor 27 provided with a pinion gear 26 that meshes with the rack 25.

Reference numeral 28 denotes the slide member 1
0, a dovetail groove 29 is formed in the block 22 having the horizontal flange 21 in the direction along the moving direction of the guide body 19, and a screw is formed through the coupling 30. For example, a hydraulic motor 32 to which the shaft 31 is connected is mounted on the guide body 19 with its screw shaft 31 engaged with the dovetail groove 29.
A slide block 33 slidable along the dovetail groove 29 is screwed into the guide block 19 so that the guide body 19 is fixed to the slide member 10 as the slide block 33 is tightened by the motor 32. I have to.

Numeral 34 denotes a first sensor for detecting that the stopper 20 has faced a predetermined position with respect to the driven wheel 6 of the parked vehicle 4, more specifically, the first sensor 3
Reference numeral 4 denotes two area sensors S1 and S2. With the movement of the guide body 19 when the stopper 20 is switched to the wheel restraining position X, the sensor S1 on the tip side of the guide body 19 has passed the driven wheel 6. Is detected, and
Based on the detection information that the sensor S2 at the base of the guide body 19 does not detect the driven wheel 6, the stopper 20
Is detected to face a predetermined position with respect to the driven wheel 6 of the parked vehicle 4.

In other words, the first sensor 34 detects that the stopper 20 has been switched to the predetermined wheel restraining position X. Based on the detection, the first sensor 34 activates the second driving means 24 with a brake. While driving is stopped,
The guide 19 is fixed to the slide member 10 by operating the second fixing means 28.

Reference numeral 35 denotes a second sensor for detecting that the stopper 20 has contacted the driven wheel 6 based on detection of an excessive load applied to the first driving means 13 with a brake.
The first driving means 1 with a brake based on this detection information
The slide member 10 is fixed to the guide rail 7 by stopping the driving of the slide member 3 and operating the first fixing means 14, 14.

In the above configuration, when performing a dynamic running performance test of the vehicle 4, the wheel fixing means 8A and 8B are separated from each other, and the stopper 20 of the wheel fixing means 8A and 8B is moved to the restraint release position Y. With the switch to,
When the vehicle 4 to be tested enters the parking area S, the vehicle 4
Is mounted on the rotating drum 3 connected to the dynamo main body.

Next, the guide body 19 is moved by the second driving means 24 with a brake so that the stopper 20 is switched to the wheel restraining position X, and the brake is moved so that the driven wheel 6 is sandwiched by the respective stoppers 20. The first driving means 13 moves the wheel fixing means 8A and 8B closer to each other. Here, the first sensor 34 detects that the stopper 20 is relatively opposed to the driven wheel 6 of the parked vehicle 4 at a predetermined position. Is detected, the driving of the second drive means 24 is stopped based on this detection, and the guide body 19 is fixed to the slide member 10 by the second fixing means 28.

On the other hand, the stopper 20 comes into contact with the driven wheel 6 with the approaching movement of the wheel fixing means 8A, 8B, and based on the detection of the excessive load applied to the first driving means 13 with the brake at this time, When the second sensor 35 detects that the stopper 20 has contacted the driven wheel 6, the first driving means 13 with the brake is stopped based on this detection, and the slide member 10 is moved to the first fixing means 14 , 1
4, the guide rails 7 are fixed to the guide rails 7,7.

As described above, the fixing of the driven wheel 6 by the stopper 20 and the installation and fixing of the vehicle 4 that has entered the vehicle parking area S are automatically achieved.
The restraint of the stopper 20 with respect to the driven wheel 6 can be released by the operation reverse to the above, and the vehicle parking area S
The installation and fixing and removal of the vehicle 4 can be easily performed in a short time without relying on human power.

In addition, since the slide member 10 and the guide member 19 and thus the stopper 20 are fully automatically fixed, even if the first and second drive means 13 and 24 are erroneously operated, the stopper 20 is held by the wheel. As a result, the position X can be reliably held, and safety can be improved.

The structure of the first and second sensors 34 and 35 can be arbitrarily changed. That is, for example, the second sensor 35 is a touch-type sensor that detects that the second sensor 35 has contacted the driven wheel 6. It is possible to make a change such as replacing with.

[0033]

As described above, according to the first aspect of the present invention, as a wheel fixing mechanism for a parked vehicle used in a single-axis chassis dynamometer device, this can easily install and fix and remove a vehicle in a short time. To be provided.

In addition, according to the second aspect of the present invention, there is provided a wheel fixing mechanism capable of automatically setting and fixing a vehicle entering a vehicle parking area. According to the third aspect of the present invention, A highly secure wheel fixing mechanism that prevents accidental switching of the stopper to the restraint release position is provided.

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing a wheel fixing mechanism of a parked vehicle used for a single-axis chassis dynamometer device.

FIG. 2 is an arrangement plan view of a wheel fixing mechanism.

FIG. 3 is a plan view of the wheel fixing means.

FIG. 4 is a side view of the wheel fixing means with a part cut away.

FIG. 5 is a sectional view taken along line AA of FIG. 4;

FIG. 6 is a sectional view taken along line BB of FIG. 3;

FIG. 7 is an explanatory view showing a conventional wheel fixing mechanism.

[Explanation of symbols]

1 ... chassis dynamometer device, 3 ... rotating drum, 4 ...
Vehicle, 5: drive wheel, 6: driven wheel, 7: guide rail, 8A, 8B: wheel fixing means, 10: slide member,
13: first driving means with brake; 14: first fixing means; 19: guide body; 20: stopper; 24: second driving means with brake; 28: second fixing means; 34: first sensor; ... second sensor, S ... vehicle parking area, X
... wheel restraint position, Y ... restraint release position.

Claims (3)

[Claims] 1. A fixed mechanism for a driven wheel on both left and right sides of a parked vehicle having driving wheels mounted on a rotating drum of a single-shaft chassis dynamometer device, the mechanism being provided in a vehicle parking area along a side of the parked vehicle. A pair of guide rails are provided on both left and right sides, and each of the guide rails is provided with a pair of wheel fixing means, and the wheel fixing means,
A slide member capable of reciprocating along the guide rail, first drive means with a brake for reciprocating the slide member, and a guide capable of reciprocating in the width direction of the parked vehicle with respect to the slide member Body, a stopper provided for fixing the driven wheel provided on the guide body, and a second drive unit with a brake for reciprocating the guide body to switch the stopper between a wheel restraint position and a restraint release position. A wheel fixing mechanism for a parked vehicle, comprising: 2. A first sensor for detecting that the stopper has faced a predetermined position with respect to a driven wheel of a parked vehicle, and a first sensor for detecting that the stopper has contacted the driven wheel. 2. A wheel fixing mechanism for a parked vehicle according to claim 1, wherein a second sensor for detecting is provided, and the driving of the first and second driving means is stopped based on detection information from each sensor. . 3. A first fixing means for fixing the slide member to the guide rail, and a second fixing means for fixing the guide body to the slide member, wherein a stopper abuts from the second sensor. 3. The wheel fixing mechanism for a parked vehicle according to claim 2, wherein the slide member and the guide member are fixed based on the detection information of the parking member.