JPH09142303A - Torque measuring device for switch - Google Patents

Abstract

PROBLEM TO BE SOLVED: To handily measure torque on the side face of a switch by providing a connecting rod having a connection end connected to a manual action end and a handle applying rotating force to a core shaft protrusively from a housing. SOLUTION: The connection end 62 of the connecting rod 60 of a torque measuring device 10 is inserted into a manual operation end provided on the side face of a switch. A handle 44 provided at the rear end section of the torque measuring device 10 is manually rotated. The rotating force applied from the handle 44 is transferred to the connecting rod 60 from the core shaft 40 via a torque transducer 30, and the manual action end of the switch is rotated. The rotating force is transferred to the drive motor shaft of the switch, and the drive motor shaft is rotated by small rotating force because it is not reduced. The torque transducer 30 detects the rotating dynamic load and outputs it as the electric signal during the process that the rotating force is transferred. A displacement detector 50 is provided on the core shaft 40 and outputs the rotational displacement as the electric signal.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a torque measuring device for a turning machine for measuring an operating load.

[0002]

2. Description of the Related Art A point machine is provided with a motor which is a driving source of the point machine with a horizontal drive shaft, and a conventional torque measuring device for the point machine is a point machine. A first type in which a bevel gear is used to reduce the speed by one step from a drive shaft of a motor to be connected to a manually operated connecting shaft which is turned so as to be operated from a top surface of the machine; There is a second type in which a torque gauge is directly read by being connected to a manual operation end provided to extend from the above.

[0003]

However, in the prior art, in the first type, the torque is increased by one step, and is connected to the manual handle connecting shaft which has changed its direction. However, there is a problem that the torque becomes large and the torque cannot be easily measured on the side of the point machine. Further, in the second type, since the torque gauge is directly read, there is a problem that data cannot be recorded electrically and it is difficult to use the data later.

[0004] The present invention has been made in view of such problems of the prior art, and it is possible to easily measure torque on the side of a point machine and to electrically transfer data. It is an object of the present invention to provide a device for measuring the torque of a point machine which can be recorded.

[0005]

SUMMARY OF THE INVENTION In order to achieve the above object, the gist of the present invention is to provide a torque measuring device for a turning machine for measuring an operating load, wherein a core (20) is provided in a housing (20). A torque transducer (30) for detecting and outputting a rotational operation load of a shaft (40) and a displacement detector (50) for outputting a rotational displacement are internally provided.
0) is provided with a manual operation end (82) extending from a drive shaft of a motor, which is a driving source of the switching force, to the side surface of the switch, and a connection end connected to the manual operation end (82). And a handle (44) for applying a rotational force to the core shaft (40) is provided so as to protrude from the housing (20). It resides in the measuring device (10).

The present invention operates as follows.

[0007] The connecting end (62) of the connecting rod (60) of the torque measuring device (10) is inserted into the manual operating end (82) provided on the side surface of the switch (80). The handle (44) provided at the other end (43) of the core shaft (40) of the torque measuring device is manually turned. The rotational force applied from the handle is transmitted from the core shaft through the torque reducer (30) to the connecting rod to rotate the manually operated end (82) of the rolling machine. The torque transducer can detect a rotational operation load and output the electric signal. In addition, a displacement detector (5
0) is provided, and the rotational displacement can be output as an electric signal.

The electric signal of the rotational operation load and the electric signal of the rotational displacement are input to a measuring unit (70), and are subjected to arithmetic processing to be converted into data, which can be displayed numerically or graphically on a display unit (74). It can be stored in a storage device and output to a computer.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to the drawings. Each drawing shows an embodiment of the present invention. As shown in FIGS. 1 to 3, the manual torque measuring device 10 for a turning machine includes a housing 20, a torque transducer 30, a core shaft 40, a displacement detector 50, a connecting rod 60, and a measuring unit 70.

[0010] A handle 21 is provided on the upper part of the housing 20,
The measuring unit 70 is attached to the side part, and the torque transducer 30, the core shaft 40, and the displacement detector 50 are arranged inside.

The torque transducer 30 is mounted on the front end plate 22 of the housing 20, and the output shaft 31 projects outside through a shaft hole provided in the front end plate 22. The input shaft 32 of the torque transducer 30 projects coaxially with the output shaft 31 at the rear end of the torque transducer.

The core shaft 40 is coaxial with the shaft of the torque transducer 30, and is pivotally supported by a rear end plate 23 and an intermediate partition 24 of the housing 20 via a bearing 25. Core shaft 4
The front end 41 is connected to the input shaft 32 of the torque transducer 30 via a coupling 42, and the rear end 43 projects through a shaft hole provided in the rear end plate 23 of the housing 20. The arm 45 is fastened with a lock nut 46. A handle knob 47 is pivotally supported at the distal end portion 46 of the arm 45.

The displacement detector 50 includes a detecting unit 51 and a rotating unit 52.
Consists of The detecting portion 51 has a U-shape having a narrow groove and is fixed to the intermediate partition wall 24 of the housing 20 with a stay 53. The rotating portion 52 has a shape in which a disk is fixed to a hub. The shaft is fixed at a position where the portion is narrow without contacting the groove of the detection portion 51.

The connecting rod 60 is a shaft member for transmitting a rotational force. The connecting rod 60 has a leading end 61 having a connecting end 62 which fits into a manual operating end 82 of the turning machine, and a rear end 63 having a torque transducer. There is an insertion hole 64 into which the 30 output shafts fit. Insertion hole 6
The output shaft is inserted in 4 and is fixed with a cotter screw 65.

The measuring section 70 includes a housing 71 mounted on the side of the housing 20 and a processing section (not shown), a storage device, and the like, and a power switch 72, a keyboard 73, a display section 74,
It comprises a data output port 75.

FIGS. 4 and 5 show a point machine 80 for which torque is to be measured. The point machine 80 has a drive motor, a reduction gear, a conversion device, and the like built in the main body. At one end, there is an operation rod 81 that outputs a reciprocating motion.

A manual operation end 82 is formed by penetrating a side surface of the main body at a position coinciding with the motor axis so that the shaft of the drive motor can be manually rotated by the connecting rod 60. The manual operating end 82 is a handwheel or a manual torque measuring instrument 1
The connection end 62 of the connection rod 60 of No. 0 can be fitted and connected.

Next, the operation will be described. The connection end 62 of the connection rod 60 of the torque measuring device 10 is inserted into the manual operation end 82 provided on the side surface of the switch 80. Manual operation end 8
When the connection end 62 is fitted to the connector 2, the power supply circuit of the drive motor of the point machine 80 is opened to prevent malfunction.

The handle 44 provided at the rear end of the torque measuring device 10 is manually turned. The rotational force applied from the handle 44 is transmitted from the core shaft 40 to the connecting rod 60 via the torque transducer 30, and the manual operation end 82 of the
To rotate. The rotational force at this time is connected to the drive motor shaft of the point machine 80, and the drive motor shaft is not decelerated, and can be rotated with a small rotational force.

In the process of transmitting the rotational force, the torque transducer 30 detects the rotational operation load and outputs an electric signal.
The torque transducer 30 detects, for example, a torsional displacement of a shaft by a resistance change of a strain gauge.

The core shaft 40 is provided with a displacement detector 50, which outputs the rotational displacement as an electric signal. The displacement detector 50 is, for example, a photo interrupter type encoder. The photo interrupter type has no mechanical contact,
There is no need for friction or lubrication, high accuracy, little deterioration over time, and high reliability.

The electric signal of the rotational operation load and the electric signal of the rotational displacement are input to the measuring section 70 and are subjected to arithmetic processing to be converted into data, which can be displayed on the display section 74 as numerical values or graphics and stored in the magnetic storage device. Then, the data can be output from the data output port 75 to the computer.

The operation of the measuring section 70 is performed by the power switch 72 and the keyboard 73, and the setting data can be input from the keyboard 73 and the data can be transferred to the computer.

In the above-described embodiment, the torsion displacement of the shaft is detected by the resistance change of the strain gauge as the torque transducer. However, a torque transducer of another structure may be combined. Further, although the photointerrupter type encoder is shown as the displacement detector, an encoder having another structure may be combined.

[0025]

According to the torque measuring device for a turning machine according to the present invention, the driving shaft of the motor which is connected to the side surface of the turning machine and is a driving source of the turning force is directly rotated. As a result, the required driving force is small, the size and weight of the device can be reduced, and the torque can be measured easily and easily. And transfer the data to an external computer, making the device easy to use.

[Brief description of the drawings]

FIG. 1 is a partially cutaway front view of a torque measuring device for a switching machine according to an embodiment of the present invention.

FIG. 2 is a plan view of a torque measuring device for a turning machine according to an embodiment of the present invention.

FIG. 3 is a view taken in the direction of the arrow III in FIG. 1, showing an outer shape of the torque measuring device for the switching machine according to one embodiment of the present invention;

FIG. 4 is a plan view of a turning machine which is an object of operation according to an embodiment of the present invention.

FIG. 5 is a view as seen from the arrow V of the turning machine to which the operation according to the embodiment of the present invention is applied.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Manual torque measuring device 20 ... Housing 21 ... Handle 22 ... Front end plate 23 ... Rear end plate 24 ... Intermediate partition wall 25 ... Bearing 30 ... Torqueducer 31 ... Output shaft 32 ... Input shaft 40 ... Core shaft 41 ... Front end 42 ... Coupling 43 ... Rear end 44 ... Handle 45 ... Arm 46 ... Lock nut 47 ... Handle knob 50 ... Displacement detector 51 ... Detector 52 ... Rotator 53 ... Stay 60 ... Connecting rod 61 ... Tip 62 ... Connecting end 63 ... Rear end part 64 ... Insertion hole 65 ... Cotta screw 70 ... Measurement part 71 ... Housing 72 ... Power switch 73 ... Keyboard 74 ... Display part 75 ... Data output port 80 ... Pointer 81 ... Operation rod 82 ... Manual operation end

Claims (1)

[Claims] 1. A torque measuring device for a turning machine for measuring an operating load, comprising: a torque transducer for detecting and outputting a rotational operating load of a core shaft in a housing; and a displacement detector for outputting a rotational displacement. And a manual operating end is provided on the point machine so as to extend from a drive shaft of a motor which is a driving source of the point force to a side surface of the point machine, and is connected to the manual operation end. A torque measuring device for a turning machine, wherein a connecting rod having a connecting end and a handle for applying a rotational force to the core shaft are provided so as to protrude from the housing.