JP2698781B2 - Tug of war training machine - Google Patents

Description

Description: Object of the Invention (Industrial application field) The present invention relates to a tug-of-war training machine, and more particularly to a tug-of-war training machine capable of practicing tug-of-war practice with a virtual opponent team. (Prior Art) In recent years, tug of war as a national sport has been revived, and various local and national tournaments have been held. In this case, in order to compete, the two teams must of course gather at the same spot, for example, each team must gather at two separate spots, such as Tokyo and Osaka, and conduct the competition Is impossible. Even if the opponent team is not present, as a device that can virtually practice tug-of-war with only the own team, this applicant outputs a pattern signal that fluctuates the traction force and traction speed at a set cycle from the pattern generator. Based on this pattern signal, the motor control unit controls the rotational force and rotational speed of the drive motor at a set cycle, thereby applying a tug-of-war tutoring machine that changes the pulling force and the pulling speed of the rope for tug-of-war via the rotating body. (Japanese Patent Application No. 61-271195). (Problems to be Solved by the Invention) The above invention directly controls the rotational force and the rotational speed of the motor, but has a drawback that the device becomes complicated,
It is an object of the present application to provide a tug-of-war tutor having a simpler structure using a torque adjuster in connection with this improvement. [Structure of the Invention] (Means for Solving the Problems) The tug-of-war training machine of the present invention is connected to a rotating body for pulling a rope for tug-of-war and a rotating shaft of the rotating body via a torque adjuster. An electric motor and a control device for controlling the torque of the torque regulator are provided. An electromagnetic clutch brake is used as the torque regulator,
It is also possible to use a mechanical slip clutch brake or a fluid torque converter. The control of the torque regulator can be performed by a preset pattern signal. In this case, a pattern generator is connected to the control device. (Operation) In the present invention, a torque regulator, for example, an electromagnetic clutch brake is disposed between the rotating body and the motor, and the exciting current of the brake is controlled instead of directly controlling the rotating force and the rotating speed of the motor. This makes it possible to practice tug-of-war by applying a pulling force to the tug-of-war rope connected to the rotating body. Example An example of the present invention will be described below. FIG. 1 shows a tug-of-war training machine 1 according to the present invention, wherein 2 is an induction motor, 3 is an electromagnetic clutch brake, 4 is a speed reducer, and 5 is a capstan drum. An electromagnetic clutch brake 3 is coupled to the output side of the induction motor 2, and a speed reducer 4 is coupled via the brake. A capstan drum 5 is connected to the output side of the speed reducer 4, and this drum is rotatably supported by support members 6, 6 '. As shown in FIG. 2, one end of a wire rope 7 is fixed to the drum, and a terminal of a tug-of-war rope 8 is connected to the other end of the rope via a connector 9. Practice of tug-of-war is performed by pulling the tug-of-war rope in the direction of the arrow. The control of the braking force of the electromagnetic clutch brake 3 is a controller
The controller 10 simultaneously controls the electromagnetic brake 11 coupled to the rotation shaft of the induction motor 2 as a safety measure in the event of a power failure. This electromagnetic brake
Reference numeral 11 denotes a non-excitation type. The torque of the capstan drum, that is, the torque, is detected by the torque meter 12, the torque is displayed on the display 13, and a detection signal is output to the controller 10. Instead of a torque meter, a load cell or the like may be used to directly detect a tensile force. The control of the electromagnetic clutch 3 is performed by arbitrarily changing the set value K to the controller 10 or controlling the braking force according to the output signal of the torque meter 12. Further, it can be controlled by the pattern generator 14 using a pattern signal corresponding to the tug-of-war pattern. Each of the above-described components is fixed on a gantry 15, and the gantry is fixed to the floor surface with anchor bolts or the like. Next, the operation of the tug-of-war training machine 1 will be described. First, the braking force of the electromagnetic clutch
10 is set, and the induction motor 2 is rotated in one direction (the direction in which the rope is pulled in). In this state, the tug-of-war rope 8 is pulled in the direction of the arrow. When the set torque of the electromagnetic clutch brake exceeds human power, the rope 8 is entangled,
In the opposite case, the output side of the electromagnetic clutch brake 3 rotates in the direction opposite to that of the motor 2, and the tug-of-war rope 8 is pulled out in a state where torque is generated. When the electromagnetic clutch brake 3 is controlled by the detection signal of the torque meter 12, this detection value is compared with a set value, and the set value is corrected according to the difference signal. When controlling with a pattern signal,
For example, a pattern signal for changing the exciting current of the electromagnetic clutch brake 3 as shown in FIG. 4 in response to a change in the pulling force of the tug-of-war team as shown in FIG. 3 is output from the pattern generator 14 to the controller 10. [Effects of the Invention] As described above, according to the tug-of-war training machine of the present invention,
A tug of war is practiced by a single team by placing a torque regulator between the rotating body to which one end of the tug-of-war rope is connected and the electric motor, and adjusting the torque of this torque regulator with a control device. And its configuration is simple. When the torque adjustment is controlled by the output signal of the pattern generator, the practice can be performed in a state closer to the actual tug-of-war state.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view showing an embodiment of a tug-of-war tutor according to the present invention, FIG. 2 is a view showing a connected state of a tug-of-war rope, FIG.
FIG. 4 is a graph showing an example of a change in tensile force during tug of war.
The figure is a graph showing the pattern signal of the exciting current of the electromagnetic clutch brake according to FIG. DESCRIPTION OF SYMBOLS 1 ... Tug of war training machine 2 ... Induction motor 3 ... Electromagnetic clutch brake 4 ... Reducer 5 ... Capstan drum 8 ... Tug of war rope 10 ... Controller 12 ... Torque meter 13 ... Display 14 …… Pattern generator

   ────────────────────────────────────────────────── ─── Continuation of front page    (72) Inventor Seiichiro Sano               2-1-1 Oda Sakae, Kawasaki-ku, Kawasaki-shi, Kanagawa Prefecture               No. 1 Showa Electric Wire & Cable Co., Ltd.                    Examiner Zentaro Hasebe

Claims (1)

(57) [Claims] A rotator for pulling a tug-of-war rope, an electric motor coupled to a rotating shaft of the rotator via a torque adjuster, and a control device for controlling the torque of the torque adjuster are provided. Tug of war training machine. 2. 2. The tug-of-war training machine according to claim 1, wherein the torque regulator is an electromagnetic clutch brake, a mechanical slip clutch brake or a fluid torque converter. 3. 2. The tug-of-war tutor according to claim 1, wherein the torque of the torque adjuster is controlled by a preset pattern signal.