JPH10197370A - Dynamometer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a dynamometer which can be made compact by a method wherein a torque arm, a load cell, a cooling fan and a hydraulic power unit are installed on the same side with reference to a rocking part. SOLUTION: A torque arm 4 is attached to one side in the width direction of a rocking part 2 at one end in the axial direction of the rocking part 2, a load cell 5 is installed on a bed 1 at the lower end part of the torque arm 4, and a cooling fan 6 and a hydraulic power unit 7 are installed on the bed 1 on the same side as the load cell 5 with reference to the rocking part 2. As a result, nothing exists on the bed 1 on the other side, and a part which protrudes from the end part in the width direction of the rocking part 2 is excluded. In this manner, the torque arm 4, the load cell 5, the cooling fan 6 and the hydraulic power unit 7 are installed on the same side with reference to the rocking part 2, a bed 1 on the other side can be omitted, and the bed 1 can be made small, and a dynamometer 16 can be made compact.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a dynamometer.

[0002]

2. Description of the Related Art FIG. 3 is a plan view of a conventional dynamometer, wherein 1 is a bed, 2 is a swinging part which is swingably supported on a bed 1 via a hydraulic levitation part 8, and 3 is a swinging part. A rotating shaft integral with the rotating unit rotatably supported by the unit 2;
5 is a load cell (load meter) mounted on the bed 1 below the torque arm 4, and 6 is a bed opposite to the load cell 5 with respect to the oscillating unit 2. A cooling fan for supplying cooling air into the oscillating portion 2 through a hole provided in the oscillating portion 2; a cooling fan 7 provided on the bed 1 on the same side as the cooling fan 6; This is a hydraulic unit that supplies oil for hydraulic levitation to the floating unit 8 and supplies oil for lubrication with the rotating unit in the swing unit 2.

In the above configuration, when the rotating shaft 3 is rotated, a torque is generated in the swing part 2, and a load is applied from the torque arm 4 to the load cell 5 by the torque, and the torque is measured.

FIG. 4 is a plan view showing the configuration of a power train test apparatus using the dynamometer 15 having the above configuration as an absorption dynamometer. Reference numeral 9 denotes a FF transmission mounted on a mounting base 10. A drive unit 13 is connected to an input side of the transmission 9 via an input shaft torque meter 11 and an offset gear 12, and the drive unit 13 is configured by a motor or a dynamometer. An output shaft 14 is provided on the output side of the transmission 9.
Is connected to the rotating shaft 3 of the dynamometer 15.

In the above configuration, when the drive unit 13 drives the input side of the transmission 9 via the gear 12 and the torque meter 11, the output side is also driven, and the driving power is absorbed by the dynamometer 15.

[0006]

In the above-mentioned conventional dynamometer, the swing arm 2 and the torque arm 4
Since the load cell 5 and the cooling fan 6 and the hydraulic unit 7 are provided on the opposite sides, the size of the bed 1 becomes large. The distance between the shafts became large, and a compact configuration became difficult. Also, the gear 12
The size of the gear 12 becomes large, the inertia on the driving side becomes large, and the control becomes difficult. In addition, the number of teeth of the gear 12 increases, and the influence of backlash increases.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and provides a dynamometer having a compact configuration and a compact configuration when combined with other equipment. With the goal.

[0008]

A dynamometer according to the present invention supports a swinging portion on a bed so as to be swingable, and a torque arm is provided on one side in the width direction of the swinging portion. A load cell for receiving the load from the torque arm is provided on the bed, and a cooling fan that sends cooling air to the rocking section on the bed on the same side as the load cell with respect to the rocking section, and at least oil is supplied to the rocking section. A supply hydraulic unit is provided so that the bed does not protrude from the swing unit on the side opposite to the load cell.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a plan view of a dynamometer according to this embodiment. A torque arm 4 is attached to one end in the width direction of the swinging portion 2 at one axial end of the swinging portion 2, and is mounted on the bed 1 below the torque arm 4. The load cell 5 is provided on the
The cooling fan 6 and the hydraulic unit 7 are provided on the bed 1 on the same side as that of FIG. As a result, the other bed 1
Since nothing is left above, the portion protruding from the widthwise end of the swinging portion 2 when viewed from above is deleted.

FIG. 2 is a plan view showing the configuration of a power train test apparatus incorporating the dynamometer 16 having the above configuration. Since the size of the bed 1 is reduced as described above, the dynamometer 16 and the driving section 13 The distance between the shafts is reduced, and a compact configuration can be achieved. Also, the gear 12 can be made smaller.

According to the above embodiment, the torque arm 4,
Since the load cell 5, the cooling fan 6, and the hydraulic unit 7 are provided on the same side with respect to the swing unit 2, the bed 1 on the other side is provided.
Can be omitted and the bed 1 can be made smaller, so that the dynamometer 16 can be made compact. In addition, when the dynamometer 16 is incorporated in a power train test apparatus, the distance between the adjacent driving units 13 can be reduced.
2 can also be reduced, so that the entire apparatus can be made compact. Further, the smaller the gear 12, the smaller the inertia, which is advantageous for control, and the smaller the number of teeth, the smaller the effect of backlash.

[0012]

As described above, according to the present invention, the torque arm, the load meter, the cooling fan and the hydraulic unit are provided on the same side with respect to the oscillating portion, so that the bed can be made smaller and the dynamometer can be reduced. Can be made compact. Further, when this dynamometer is combined with other devices, a compact configuration can be achieved by reducing the distance between the shafts.

[Brief description of the drawings]

FIG. 1 is a plan view of a dynamometer according to the present invention.

FIG. 2 is a plan view showing a configuration of a power train test apparatus using a dynamometer according to the present invention.

FIG. 3 is a plan view of a conventional dynamometer.

FIG. 4 is a plan view showing a configuration of a power train test apparatus using a conventional dynamometer.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Bed 2 ... Swing part 3 ... Rotating axis 4 ... Torque meter 5 ... Load cell 6 ... Cooling fan 7 ... Hydraulic unit 8 ... Hydraulic levitation part 16 ... Dynamometer

Claims (1)

[Claims] 1. A load cell that supports a swinging part on a bed so as to be swingable, a torque arm is provided on one side in the width direction of the swinging part, and receives a load from the torque arm on the bed below the torque arm. And a cooling fan that sends cooling air to the oscillating unit and a hydraulic unit that supplies oil to at least the oscillating unit on the bed on the same side as the load cell with respect to the oscillating unit. A dynamometer characterized in that the bed does not protrude from the swinging part.