JPH0569074U - Adjusting mechanism for positioning hoist and heavy load balancer device using the adjusting mechanism - Google Patents

Abstract

(57) [Abstract] [Purpose] To facilitate the centering of alignment for various suspended objects, suspended equipment, etc. that are supported in a suspended state, and to be able to quickly set the height adjustment in the suspending direction. To do. An adjusting mechanism 11 for stopping and suspending a suspended object, a suspended device T, and the like, which are supported by a wire rope 7 that is wound around the wire drum 4 by rotation of a wire drum 4 in a hoisting machine. Set up. This adjusting mechanism 11 drives and rotates the wire drum 4 by the adjusting motor 12 via the transmitting means 15, and also controls means 18 for controlling the amount of pulling out the wire rope 7, and input means 19 for setting and inputting the pulling length position. Equipped with. In addition, the conical wire drum 4
The wire drum 4 balances the torque change of the balance spring 3 that accumulates the elastic force in synchronization with the rotation of the wire drum 4.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an adjusting mechanism for positioning a hoist that sets a supporting height position of a suspended object by a hoist or the like, and by utilizing this, it is supported in a suspended state. The present invention relates to a heavy load balancer device that facilitates centering for alignment of various types of equipment and enables quick setting of the working height position in the suspension direction.

[0002]

[Prior Art]

 Conventionally, for example, in welding guns used when welding automobile bodies, the positioning and centering of the welding gun itself is considerably bulky in weight, and therefore the balancer installed so that it can be run by an overhead traveling trolley. It is suspended and supported through a device.

This conventional balancer device has a spring balancer structure in which, for example, winding or unwinding of a spiral balance spring arranged inside is coordinated with a wire rope wound around a wire drum. There is. In other words, when the welding gun linked to the lower end of the wire rope is lowered, the balance spring is rolled up, and the balance with the return action of the balance spring itself that occurs correspondingly is balanced. The weight of the gun itself is reduced and the height in the suspension direction can be adjusted easily.

[0004]

[Problems to be solved by the device]

 However, in the case of this conventional spring balancer structure, when the suspended welding gun is extremely heavy, a considerable load is applied even if the balance is balanced, so adjustment in the height direction, especially Adjustment within that delicate range was extremely difficult.

This is because if the welding gun is bulky in weight, it is necessary to set the built-in balance spring to be stiff so that it can withstand the welding gun, and the movement adjustment within a small range is increasingly required. This is because it makes it difficult, and conversely, if the balance spring is set to be soft so as to allow a slight adjustment, a large weight cannot be sufficiently supported.

In addition, when the movement adjustment is repeated, if the balancer device itself does not remember the previous position when bringing it to a preset position again, it is necessary to arrange it at a predetermined position. However, it was necessary to reset the setting each time, and improvement in work efficiency could not be expected.

In particular, in the case of flow production using a conveyor device or the like, for example, when the centering position is always kept constant in the centering work at the welding location, the assembling fitting position, etc., such as a welding gun that is heavy in weight. The delicate alignment of various suspended devices was extremely troublesome and complicated, and hindered improvement of work efficiency. Not only that, but it also causes a stress on the worker for alignment, which in turn lowers the product yield and causes defective products.

On the other hand, when a hoist or other hoist is used to support various suspended objects, which are heavy objects, at a predetermined height position, there is a similar problem. Due to the bulky weight of the body, it was difficult to stop at a preset support height position.

Therefore, the present invention has been devised in view of various existing circumstances as described above, and when stopping various suspended objects that are bulky in weight at a predetermined supporting height position, An object of the present invention is to provide an adjusting mechanism for positioning the hoisting machine, which enables the suspension supporting height position of the hoisting machine to be set quickly and easily, and by utilizing this, a suspended mechanism such as a welding gun can be provided. Even with hanging equipment, height adjustment in the hanging direction is extremely easy, its alignment can be set quickly, and the height position can be memorized and automatically aligned to repeat. It is an object of the present invention to provide a heavy-weight balancer device that does not require position alignment work and that can dramatically increase work efficiency.

[0010]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the adjusting mechanism (11) for positioning the hoisting machine according to the present invention has a wire drum 4 to which a wire rope 7 for suspending and supporting a predetermined object T to be suspended is mounted. Then, in the hoisting machine for supporting the suspended object T at a predetermined height position by winding and unwinding the wire rope 7 accompanying the rotation of the wire drum 4, an adjusting motor 12 for rotating the wire drum 4 is used. A transmission means 15 for transmitting the rotation of the adjustment motor 12 to the wire drum 4, and a control means for controlling the amount of withdrawal of the wire rope 7 corresponding to the rotation of the wire drum 4 accompanying the rotation drive by the adjustment motor 12. 18, and input means 19 for setting and inputting the pull-out length position.

Further, the heavy object balancer device in the present invention utilizing the adjusting mechanism (11) for positioning has a conical shape for winding and mounting a wire rope 7 for suspending and supporting a predetermined suspended device T. The wire drum 4 and the balance spring 3 that accumulates the elastic force in synchronization with the rotation of the wire drum 4 when the wire rope 7 is wound and unwound is provided. In the balancer device that balances the torque change by the wire drum 4 and stops the suspended device T from moving to a predetermined height position, the adjustment motor 12 that rotates the wire drum 4 and the rotation of this adjustment motor 12 are rotated. The transmission means 13 for transmitting to the wire drum 4 and the withdrawal of the wire rope 7 corresponding to the rotation of the wire drum 4 accompanied by the rotation drive by the adjusting motor 12. It is characterized in that an adjusting mechanism 11 provided with a control means 18 for controlling the amount and an input means 19 for setting and inputting the pull-out length position is provided.

[0012]

[Action]

 In the adjusting mechanism 11 for positioning according to the present invention, the input means 19 corresponds to the work to be performed by various kinds of suspended objects and suspended equipment T, and the suspended equipment T and the like. The support height position, the working height position, etc. are input and set, and the setting contents are instructed to be output to the control means 18.

The control means 18 instructed the height position is configured to input the input means when winding or rewinding the wire rope 7 wound around the wire drum 4 which is rotated by the adjusting motor 12 driven in the forward and reverse directions. In response to an instruction from 19, the amount of pulling out the wire rope 7 suspending and supporting the suspended device T etc. is feedback-controlled.

At this time, the wire rope 7, the amount of which is adjusted and controlled, corresponds to the preset height position, and as a result, stops the suspended object T from moving to a predetermined supporting height position.

On the other hand, in the heavy load balancer device in which the positioning adjusting mechanism 11 is incorporated, the wire rope 7 whose amount of pull-out is adjusted and controlled has the same elastic force as the wire drum 4 rotates. The accumulated torque fluctuations in the balance sling 3 are balanced by the conical wire drum 4, and the suspended device T is stopped moving to a predetermined working height position.

[0016]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings in the case of being implemented in a heavy load balancer device. In the drawings, reference numeral 1 indicates a side surface in which a front portion is formed in a tapered narrowed shape. It is a housing case having a substantially conical shape, and a spindle shaft 2 is rotatably supported in the housing case 1 itself via bearings in the housing case 1, and a rear portion of the spindle shaft 2 is supported. A spiral balun spring 3 and a substantially conical wire drum 4 are mounted on the front part of the balun spring 3, respectively, and are incorporated in the housing case 1.

The balance spring 3 has an outermost end on an inner peripheral surface of a spring case 5 connected to a rear portion of the wire drum 4, and an innermost peripheral side of a bush 6 mounted on a rear portion of the spindle shaft 2. The ends are connected to each other.

The wire drum 4 has a spiral wire groove 8 formed on the outer peripheral surface thereof, into which the wire rope 7 to be wound or unwound is inserted. The rear end of the wire rope 7 is fixed to the rear end, which is the maximum diameter portion of the wire drum 4 itself, and the front end of the wire rope 7 itself, which is sequentially guided along the wire groove 8, is the maximum end of the wire drum 4. It extends to the outside of the housing case 1 through an outer outlet 9 which is open to the front part of the housing case 1 and reaches a front part which is a small diameter part, and a suspending tool 10 such as a predetermined hook is connected to the outside.

A predetermined suspended device T such as a welding gun is suspended and supported by the suspending tool 10. When the suspended device T itself is lifted, the wire rope 7 is moved to the wire drum 7. The wire lobe 7 is pulled out from the wire drum 4 when the wire lobe 7 is wound around the wire 4 and lowered.

Now, when the wire rope 7 is pulled out here, the wire drum 4 itself is rotated accordingly, and this rotation also rotates the spring case 5 to wind the balance spring 3 and the balance spring 3 The elastic force is accumulated and imparted to the wire 3, and the wire rope 7 itself is wound up when the accumulated elastic force is restored. Therefore, for example, when the suspended device T suspended and supported by the suspending device 10 is lowered and the wire rope 7 is pulled out, the restoring force against the elastic force accumulated in the balance spring 3 is applied. It acts so as to raise the hanging device T, maintains a balance with respect to the weight of the suspended device T 1, and reduces the weight of the suspended device T itself.

That is, while the wire drum 4 and the spring case 5 that rotate with the pulling out of the wire rope 7 cause the balance spring 3 to accumulate elastic force, the restoring force against it causes the wire rope 7 to wind. In addition, at this time, the elastic force torque that changes when accumulated in the balance spring 3 and the wire rope that changes in accordance with the pull-out length in the conical wire drum 4. In combination with the winding diameter of the loop 7 itself, the weight balance of the suspended device T itself that is suspended is always kept constant.

Further, an adjusting mechanism 11 for adjusting the amount of pulling out and winding the wire rope 7 to a constant amount is provided. The adjusting mechanism 11 includes an adjusting motor 12 for rotating the wire drum 4 and this adjusting mechanism 12. A transmission means 13 for transmitting the rotation of the adjustment motor 12 to the wire drum 4; and a control means 18 for controlling the amount of withdrawal of the wire rope 7 corresponding to the rotation of the wire drum 4 due to the rotation drive by the adjustment motor 12. The input means 19 for setting and inputting the pull-out length position is provided.

The adjustment motor 12 is of a DC type or a servo type, and is fixedly arranged on the rear wall itself of the housing case 1 as shown in the figure, and its rotation amount is constantly detected by the encoder 13. It is monitored and fed back to the control means 18. When the adjusting motor 12 itself is stopped, the brake 14 keeps the stopped state.

The transmission means 15 has a drive gear 16 fixed to the shaft of the adjusting motor 12 and an outer peripheral surface of a substantially donut-shaped driven gear 17 fixed to the rear surface of the wire drum 4 so as to surround the spring case 5. It is made by meshing.

The control means 18 is configured by incorporating a computer, and adjusts the adjusting motor 12 together with a feedback signal from the encoder 13 so as to adjust the position of the wire rope 7 pulled out by the input means 19. Controls the rotation of the forward and reverse directions.

The input means 19 is configured by incorporating a computer similarly to the control means 18, and sets the working height position of the suspended device T by, for example, a ten-key system, or by the control means 18. The work height position corresponding to the controlled amount of pulling out the wire rope 7 is fed back to directly input and set. In addition, these height positions are displayed and displayed, and these are stored as height data, and when necessary, each height data of each suspended device T is called, and, for example, the welding position and the centering The height of the position is instructed to be output to the control means 18 via a wired or wireless communication means. The work position can be set by the input means 19 by automatically creating a program to continuously change the work position, enabling the setting corresponding to the work situation. It

Next, an example of use of the heavy load balancer device of the present invention will be described. As shown in FIG. 2, for example, a supporting member F suspends the vehicle so that it travels along a traveling rail R laid on the ceiling. While being supported in a suspended state, a predetermined suspending device T such as a welding gun is suspended from a suspending tool 10 at the lower end of the wire rope 7 which is out of the housing case 1.

In this state, by directly bringing the suspended device T to the working position, or by instructing the height position at which the work should be performed, each suspended member T is adjusted by the input means 19 in the adjusting mechanism 11. The work height position of each hanging device T is input and set.

Therefore, when various work is performed by each suspended device T, when the work height position is instructed to be output to the control means 18 by the input means 19, the adjustment motor 12 is rotated in the forward and reverse directions. Then, the wire rope 7 wound around the wire drum 4 is wound or unwound. A predetermined elastic force is accumulated in the balance spring 3 in synchronization with the rotation of the wire drum 4, and the torque change of the elastic force of the balance spring 3 is changed to a conical wire. The drum 4 is balanced to easily move the suspended device T to a predetermined height position.

At this time, the control unit 18 detects the rotation amount of the adjustment motor 12 and rotates the adjustment motor 12 in the forward and reverse directions so as to reach the work height position preset by the input unit 19. The rotational direction is controlled and adjusted, and the suspended device T is stopped at a predetermined position.

The suspended device T that has been stopped is accurately centered there, and welding work, assembling work of predetermined parts to each device, processing work with various jigs and tools, etc. may be performed. ..

In the above embodiment, the description has been given of the case in which the adjusting mechanism 11 is incorporated for positioning of the heavy load balancer device. For example, a hoist or the like hoisting machine (not shown). It is also possible to implement it as the adjusting mechanism 11 for positioning in the hoisting machine that sets the supporting height position of the suspended object T according to. That is, this hoisting machine has a wire drum 4 around which a wire rope 7 for suspending and supporting a predetermined object T to be suspended is mounted, and the wire roll 4 accompanying the rotation of the wire drum 4 is provided. It is assumed that the suspended object T is supported at a predetermined height position by winding and unwinding the loop 7 and the amount of pulling out the wire rope 7 is controlled by controlling the rotation of the wire drum 4 by the adjusting mechanism 11 described above. It is to be adjusted appropriately.

[0033]

[Effect of the device]

 The present invention is configured as described above, and therefore, even for a device T to be suspended such as a welding gun that is heavy in weight, height adjustment in the suspension direction can be set very easily. The position can be quickly adjusted. Moreover, by storing the height position to be set, it is possible to perform automatic alignment, so even when moving forward and backward repeatedly to the same position, repetitive alignment work is unnecessary and work efficiency is improved. It can be dramatically increased.

Similarly, when the supporting height position of the suspended object T is adjusted and set by a hoist or other hoist, it can be quickly and easily controlled by the adjusting mechanism 11, and therefore, in terms of weight. Even if it is bulky, it can be handled very easily.

That is, this is the adjusting mechanism 11 in the present invention, which comprises the adjusting motor 12, the transmitting means 13, the controlling means 18 for controlling the pulling amount of the wire rope 7, and the input means 19 for setting and inputting the pulling length position. This is because the hoisting machine or the like incorporating this adjusting mechanism 11 facilitates arbitrary adjustment of the height position of the suspended object T to be supported. In addition, the torque change of the repulsion force of the balance spring 3 is balanced by the conical wire drum 4 around which the wire rope 7 is wound and mounted, and the suspended device T is placed at a predetermined height position. By incorporating the adjusting mechanism 11 into the heavy load balancer device that is stopped to move, even in the case of a suspended device T that is heavy in weight, the working height position to be suspended can be adjusted and set very easily to move quickly. It can be stopped.

Moreover, even when the movement adjustment is repeated, it can be brought to the position set in advance by the input means 19 any number of times, and it is not necessary to adjust the set position again again, and the wire rope is not necessary. Since the setting of the working height position by pulling out and housing 7 is obtained by driving the adjusting motor 12, accurate positioning can be performed.

Further, by being able to be accurately positioned, for example, in the case of flow production by a conveyor device or the like, even in the centering work such as a welding position or an assembly fitting position, the centering position is always stored in advance so as to be constant. This makes it easier for workers to perform positioning, reduces work mistakes, improves product yield, and prevents the occurrence of defective products.

[Brief description of drawings]

FIG. 1 is a schematic cross-sectional view of a weight balancer device incorporating an adjusting mechanism.

FIG. 2 is a schematic perspective view of an example of a usage state of the heavy load balancer device.

[Explanation of symbols]

F Support member R Traveling rail T Suspended device (suspended object) 1 Housing case 2 Spindle shaft 3 Balance spring 4 Wire drum 5 Spring case 6 Bushing 7 Wire rope 8 Wire groove 9 Outer outlet 10 Suspension tool 11 Adjustment mechanism 12 Adjustment Motor 13 Encoder 14 Brake 15 Transmission Means 16 Drive Gear 17 Driven Gear 18 Control Means 19 Input Means

Claims (2)

[Scope of utility model registration request] 1. A wire drum for winding and mounting a wire rope for suspending and supporting a predetermined object to be suspended, the wire rope being wound and unwound in accordance with the rotation of the wire drum. In a winding machine that supports an object at a predetermined height position, an adjustment motor that rotates a wire drum, a transmission unit that transmits the rotation of the adjustment motor to the wire drum, and a wire drum that is rotated by the adjustment motor. An adjusting mechanism for positioning a hoisting machine, comprising: a control means for controlling an amount of pulling out a wire rope corresponding to a rotation and an input means for setting and inputting a pulling length position thereof. 2. A conical wire drum on which a wire rope for suspending and supporting a predetermined suspended device is mounted, and a wire drum which is wound and unwound in synchronization with the rotation of the wire drum. A balance spring for accumulating repulsive force by a wire drum, and a wire drum balances torque changes of the repulsive force in the balance spring to stop the suspended device from moving to a predetermined height position. An adjusting motor for rotating the adjusting motor, and a transmitting means for transmitting the rotation of the adjusting motor to the wire drum,
It is provided with an adjusting mechanism including a control means for controlling the amount of pulling out of the wire rope corresponding to the rotation of the wire drum accompanying the rotation drive by the adjusting motor, and an input means for setting and inputting the pulling length position. Characteristic heavy load balancer device.