JPH08216045A - Torque wrench operating condition recording device - Google Patents

Abstract

PURPOSE: To enable the operating conditions of a torque wrench to be surely grasped by providing the torque wrench with a transmitter which transmits an identification signal when a set torque value is reached, receiving the identification signal or the like by means of a portable receiver, storing the time of reception, etc., and collecting and processing the stored data using a personal computer. CONSTITUTION: A transmitter 2 which transmits identification signals is combined with a torque wrench 1 and is made to transmit an identification signal when a predetermined torque value is reached and a microswitch is turned on. The identification signal is received by a receiver 4 that is small and lightweight enough to be worn by the operator. An earphone 5 is attached to the receiver 4, and a reception signaling sound is sent to the earphone 5 on reception of the identification signal to inform the operator that the torque wrench 1 is operating. The identification signals are stored in a memory block together with the number of times of reception and reception time. The data stored is thereafter input to a personal computer 6, whereby the operating conditions of the torque wrench 1 (tightening torque value, time, number of times, etc.) can be grasped.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a torque wrench operation status recording device capable of managing tightening work of a screw or the like by a torque wrench.

[0002]

2. Description of the Related Art There are the following two conventional torque management systems for wrenches.

A. System using digital display type torque wrench This system records the torque value itself using a digital display type torque wrench with a memory function. The operator inputs the set torque value by pressing the key with his finger.

B. Tighten the bolt or nut and apply torque.

C. When the set torque is reached, an alarm sound and a light emitting diode blink, and at this time the worker stops the tightening work.

D. The torque value at this time is displayed and simultaneously stored in the memory section.

E. Stored torque value (eg 100 kg
f · cm or 9.8 Nm) is output to a dedicated printer or personal computer.

The contents are as follows.

B. System related to combination of single-purpose torque wrench + limit switch and counter This system is used to prevent forgetting to tighten bolts in the assembly line of an automobile factory. This is a system in which a contact piece is taken out, a limit switch is operated on the contact piece, and the number of tightened bolts is counted by wire or wirelessly. This system only "counts" the number of bolts tightened,
It does not confirm the tightening work time.

A torque wrench for tightening a screw with a predetermined torque was originally developed from an assembly line of the automobile industry, and its record is targeted at a torque value and its tightening accuracy.

On the other hand, there is no suitable system for recording the screw tightening in outdoor work such as construction, civil engineering, and piping.

[0012] Since the record is not recorded only by the report of the worker who has surely tightened it, the follow-up investigation cannot be performed even if there is an accident due to a construction error. Also, it cannot be used for work analysis.

Generally, the above torque wrench A is not suitable for tightening a screw with a specified torque value in the place where the administrator cannot see it. This is because the operator can correct the set torque value. Moreover, since the torque wrench body is equipped with all the functions, the unit price of the product must be expensive. In addition, since the current consumption is large, a rechargeable battery with a large capacity is stored in the grip portion (for example, Japanese Patent Laid-Open No. 63-28572), but increasing the capacity of the battery immediately increases the product weight. It is not preferable. It is desirable that it is inexpensive, robust, and has few electronic components.

For outdoor work, B is preferable to A mentioned above.

However, the counter used for B is used in factory equipment and is not a portable type that can be worn.

Since B cannot change the set torque value, when performing several kinds of screw tightening work with different tightening torque values, it is necessary to prepare in advance a single-function torque wrench with different set torque values. In addition, the operation of any one-purpose torque wrench is promptly recorded, and a means for informing the operator of the operation is required. In this case, the object to be stored is not the torque value but the operation time because the set value is known because the torque value is fixed. In addition, the clock function that serves as a memory standard must be correctable in order to maintain accuracy, but a system that does not allow the operator to correct the time is required.

The present invention provides a torque wrench operation status recording apparatus which solves the problems A and B described above.

[0018]

The gist of the present invention will be described with reference to the accompanying drawings.

When the set torque value is reached, the circuit of the contact switch is turned on and the torque wrench 1 provided with the transmitter 2 for transmitting the identification signal, and the torque wrench by receiving the identification signal transmitted from the transmitter 2. 1 and a portable receiver 4 for storing the time when the identification signal is received
And a personal computer 6 that collects the stored data of the receiver 4, and records the operating status of the torque wrench 1, and relates to a torque wrench operating status recording device.

When the set torque value is reached, the circuit of the contact switch is turned on and a plurality of torque wrenches 1 provided with transmitters 2 for transmitting identification signals, and by receiving the identification signals transmitted from the transmitters 2 are received. It comprises a portable receiver 4 for recording the operation of the torque wrench 1, the time when the identification signal is received and the number of times of reception for each identification signal, and a personal computer 6 for collecting the data stored in the receiver 4. The present invention relates to a torque wrench operation status recording device which records the operation status of a torque wrench 1.

In the torque wrench operating condition recording apparatus according to the second aspect, the transmitter 2 has a tone signal oscillating section, and is configured so that a plurality of tone signals can be obtained by setting, and one of the tone signals is obtained. The present invention relates to a torque wrench operation status confirmation device that employs a transmitter 2 configured to be capable of transmitting the identification signals of the torque wrench 1 having different set torque values by combining the torque wrench 1 as one identification signal. .

In the torque wrench operation status recording apparatus according to any one of claims 1 to 3, when the storage data is output from the receiver 4 to the personal computer 6, the time of a timer built in the personal computer 6 is used. The present invention relates to a torque wrench operation status recording device, characterized in that a program for correcting the time of the timer of the receiver 4 is incorporated so that an operator carrying the receiver 4 can disable the time correction. .

In the torque wrench operation status recording apparatus according to any one of claims 1 to 4, the receiver 4 directly notifies the operator's ear that the identification signal from the transmitter 2 has been received as a confirmation signal. Receiver 4 with earphone 5
The present invention relates to a torque wrench operation status recording device characterized by adopting

[0024]

The identification signal transmitted from the transmitter 2 of the torque wrench 1 is received and stored by the receiver 4 carried by the operator, and the stored data is collected by the personal computer 6.

[0025]

EXAMPLE FIG. 1 shows the overall structure of this example.

The torque wrench 1a is combined with the transmitter 2a for transmitting the identification signal a, and when the predetermined torque value is reached, the micro switch 16 (contact switch) is turned on and the identification signal a is transmitted. Similarly, the torque wrench 1b transmits the identification signal b.

In this way, each of the plurality of torque wrenches 1
(1a, 1b, ..., 1p) to the transmitter (2a, 2b,
..., 2p) identification signal (a, b, ..., p)
Identify by.

FIG. 2 shows an operation block diagram of the receiver 4 which receives the identification signal from the transmitter 2 for each identification signal.

The receiver 4 which receives the identification signal transmitted from the transmitter 2 is not of the installation type, but is small and light enough to be worn by an operator, and the power source uses a rechargeable battery. .

Earphone 5 is attached to receiver 4 and transmitter 2
Upon receiving the identification signal from, the micro computer in the receiver 4 sends a reception confirmation signal sound to the earphone 5, and directly informs the ear of the operator that the torque wrench 1 has been operated. The identification signals received at the same time are sent to the memory block by the micro computer together with the number of times of reception and the time of reception, and stored therein.

The cord 5a of the earphone 5 is an antenna.

The stored data is collected by connecting the receiver 4 and the personal computer 6 with, for example, an RS232C cable. At this time, at the same time, the timer of the receiver 4 is corrected by the timer of the personal computer 6. As a result, the clock function of the receiver 4 always maintains the same time accuracy as that of the personal computer 6, and excludes the means for the operator to arbitrarily change the timer of the receiver 4.

In the present embodiment, the earphone 5 is connected to the receiver 4
The power of the receiver 4 circuit is turned on when plugged in, and turned off when unplugged
It is configured so that

3 and 4 show a torque wrench 1 to which a transmitter 2 is attached. This is disclosed in Japanese Patent Application Laid-Open No. 1-2-2
It is a wrench (torque wrench) that incorporates the torque sensitive mechanism 3 disclosed in No. 52368.

The tool 10 at the tip is a replaceable type, and is a system to be replaced according to the object.

It consists of a main body 7 which swings around the pin 14 as a fulcrum, and a movable part 17 which is integral with the handle 11. When the handle 11 is gripped with a hand and turned in the tightening direction of the screw, the torque approaches the set value. Then, a force in the direction of the arrow (shown in FIG. 4) acts on the meshing portion 15 on the main body 7 side and the meshing portion 15 on the movable portion 17 side, causing the movable portion 17 to swing (downward in FIG. 4) The return arm 8 moves in the direction of the arrow (shown in FIG. 4) against the anti-shrinkage line 9 with the pin 12 as a fulcrum, and the micro switch 16 attached to the end of the transmitter 2
The return arm 8 pushes, and an identification signal is transmitted. 13 is a transmitter battery.

FIG. 5 is a block diagram of the transmitter 2.
[A] is a tone signal oscillator, [B] is a high-frequency oscillator,
[C] is a transmitting antenna.

The identification signal is specified as follows.

Since 16 kinds of tone signals can be obtained by appropriately shorting a plurality of terminals [d] on the circuit in the transmitter 2 and changing the combination, one of these tone signals is used as one identification signal. Used as one torque wrench 1
The operation of the torque wrench 1 (for example, tool number 01) can be known by allocating and assembling it to.

Therefore, even if one worker (that is, one receiver 4) uses the torque wrench 1 having a maximum of 16 different torque setting values, the usage status can be grasped.

Incidentally, as an office work for the administrator side to collect the operation information, the torque set value of each torque wrench 1 is set in advance,
It is natural to record the tool number, and in order to use it at different work sites at the same time, there are a plurality of workers and each must carry the receiver 4, so It is also necessary to register the number 4 in advance in the personal computer 6 and to record the number of the receiver 4 given to whom.

The operation information collected by the personal computer 6 is output to the printer. A method of directly outputting from the receiver to a dedicated printer without using the personal computer 6 may be used.

Since this embodiment is constructed as described above, it has the following operational effects.

The transmitter 2 only emits a tone signal, and does not require battery-consuming elements such as a strain gauge, an amplifier circuit, a digital display LED light emission, a buzzer sound, etc. as in the conventional example. Since the reachable distance can be extremely short up to the earphone cord (antenna) of the worker, the transmission output can be weak, and it is possible to suppress the battery consumption as a whole as much as possible. By the way, the battery used in this example is (4LR44, DC6V, battery for camera exposure device) can transmit 1,000 times or more. Since the transmitter 2 is naturally small and inexpensive, it is possible to arrange the torque wrench 1 for each set value and combine the transmitter 2 with each of them.

In the receiver 4 which receives the identification signal as the operation confirmation of the torque wrench 1, the reception confirmation signal is sent to the earphones 5.
Therefore, it is possible to confirm without making a signal sound at the work site where it is not disturbed by the surrounding noise, and conversely, it is required to be quiet. The operation data is collected by the personal computer 6 and the receiver number, tool number (that is, tightening torque value), time, and number of times of work for one day are recorded.

Since the timer of the receiver 4 is corrected by the personal computer 6 at the time of data collection, the accurate time is always maintained, and the operator cannot change the time without permission, so a highly reliable numerical value can be obtained. To be By using these figures together with the drawings of the construction site, it is possible to infer the worker's behavior route.

From the above, it is possible to make a document as a quality guarantee of the work, and it can be used as a measure for improving the PL method and construction management. Screw tightening work without an administrator,
It is possible to manage and record as if it were tachograph management in the automobile transportation industry.

In this embodiment, the torque wrench 1 and the transmitter 2 are combined, but if there is a movable part and it can be moved once to a fixed position, it can be operated once.
This system can be used not only for work tools. If the micro switch is applied to a hydraulic circuit instead of a pressure switch, it can be used for hydraulic equipment.

[0049]

As described above, the present invention provides a torque wrench operation status recording device capable of accurately grasping the operation status of the torque wrench.

[Brief description of drawings]

FIG. 1 is an overall configuration diagram of a present embodiment.

FIG. 2 is an operation block diagram of a receiver according to the present embodiment.

FIG. 3 is a front view of a torque wrench according to the present embodiment.

FIG. 4 is a front view of a main part of the torque wrench according to the present embodiment.

FIG. 5 is a block diagram of a transmitter according to the present embodiment.

[Explanation of symbols]

 1 torque wrench 2 transmitter 4 receiver 5 earphones 6 personal computer

Claims (5)

[Claims] 1. A torque wrench provided with a transmitter for transmitting an identification signal by turning on a circuit of a contact switch when a set torque value is reached, and a torque wrench of the torque wrench by receiving the identification signal transmitted from the transmitter. A torque wrench, comprising a portable receiver that stores the operation and the time when the identification signal is received, and a personal computer that collects the stored data of the receiver, and records the operating status of the torque wrench. Operation status recording device. 2. When a set torque value is reached, the circuit of the contact switch is turned on to provide a plurality of torque wrenches provided with a transmitter for transmitting an identification signal, and by receiving the identification signal transmitted from the transmitter, The operating status of the torque wrench is composed of a portable receiver that records the operation of the torque wrench, the time when the identification signal is received, and the number of times of reception for each identification signal, and a personal computer that collects the stored data of the receiver. A torque wrench operation status recording device, which records 3. The torque wrench operation status recording apparatus according to claim 2, wherein the transmitter has a tone signal oscillating unit, and is configured to obtain a plurality of tone signals by setting, and one of the tone signals. A torque wrench operating status confirmation device that employs a transmitter configured to be capable of transmitting the identification signals of the torque wrenches having different set torque values by combining the above with one of the torque wrenches as one identification signal. 4. The torque wrench operation status recording device according to claim 1, wherein when the storage data is output from the receiver to the personal computer, the time is stored at a timer built in the personal computer. A torque wrench operation status recording device, characterized in that a program for correcting the time of a timer of a receiver is incorporated so that an operator carrying the receiver can disable the time correction. 5. The torque wrench operation status recording device according to claim 1, wherein the operator directly notifies the ear of the operator that the identification signal from the transmitter has been received as a receiver. A torque wrench operation status recording device characterized by adopting a receiver equipped with earphones.