JPS63171794A - Two-step speed operation driving device for electric winder - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Field of Industrial Application] This invention provides a low-speed hoisting switch, a high-speed hoisting switch, and a low-speed hoisting switch in an electric hoisting device such as an electric chain lock or an electric hoist. This invention relates to a two-speed operation operating device that operates a high-speed lowering switch and a high-speed lowering switch.

[Prior art]

Conventionally, speed conversion operation control devices for electric hoisting devices include:
As published by Utility Model Application Publication No. 48-55070, ? The middle part of the inner cover is pivotally connected to the opening of the box housing a mechanical/electrical conversion control device such as a tension meter by a pivot fixed to the inner cover, and the arc-shaped gear fixed to the pivot is connected to the machine.・Mesh with a pinion fixed to the operation shaft of the electric conversion control device, connect both ends of the inner cover and the middle part of the box body via a neutral position holding spring, and connect one end of the inner cover or the other Press the end and use the inner cover to open the pivot 2
2. Description of the Related Art A speed conversion driving operation device is known in which an operating shaft of a mechanical/electrical conversion control device is rotated via an arcuate gear or a pinion.

[Problem that the invention seeks to solve]

However, in the case of the conventional speed conversion driving operation device,
Since one side or the other side of the inner cover must be pressed while holding the box in hand, there is a problem in that it is difficult to perform speed conversion operation with one hand.

[Purpose and structure of the invention]

An object of the present invention is to provide a two-speed operation operating device for an electric hoisting device that can advantageously solve the above-mentioned problems. A load hanging tool 5 is connected to the hanging end of the hanging load lifting strip 2 hanging from the support member 4 having a vertically extending holding cylinder, and the holding cylinder 5 is in a neutral position. Grip 7 held in neutral position by holding spring 6
A low speed hoisting switch LS-LU and a high speed hoisting switch LS-HU are fitted in the support member 4 so as to be able to be raised and lowered, and are operated via a resistor by the upward movement of the grip 7. The low-speed lowering switch LS- is operated sequentially via the striker as the Grino F7 moves downward.
A two-speed operation operating device for an electric hoisting device is characterized in that it is provided with an LD and a high-speed hoisting switch LS-HD.

〔Example〕

Next, the invention will be explained in detail using fully illustrated examples.

1 to 9 show a first embodiment of the present invention, in which a traveling drive device 8 comprising an electric motor with a reduction gear is shown.
The wheels 10 of the trolley 9 equipped with the above-mentioned electric hoist 9 are placed on the lower 7 langes of the running rail 11, and the electric hoist main body 1 consisting of an electric chain block main body is connected to the lower part of the frame 12 of the trolley 9, and The upper end of the control device box 1 is connected by a gel 14 to the hanging end of the load lifting strip 2 made of a load chain hanging from the load sheave of the hoisting device main body 1, and the control device box 15 A flange 15 at the upper end of the holding cylinder 5, which is perpendicular to the lower end, is fixed by a port 16, and the supporting member 4 is constituted by the holding cylinder holder and the control device index 1.

A cylindrical grip 7 having anti-slip irregularities on the outer periphery is slidably fitted on the outside of the middle part of the holding cylinder 5, and 1. A slit 17 extending in the vertical direction is provided, and an operating rod 18 disposed in the holding cylinder 5 and a bottle 19 extending in the diameter direction thereof are inserted across each slit 17 and the grips 7 and K.
Both ends of the gin 19 are locked to the grip 7.

A pressure ring 20 with an outer flange is fitted to the operating rod 18 on both upper and lower sides of the bottle 19, and a supporting protrusion 21 is provided inside the central part of the holding cylinder in the height direction. Snap rings 25 that support the spring bearing rings 22 are fitted into annular grooves provided at the upper and lower parts of the ring 3, and between the valley pressing ring 20 and each spring bearing ring 22, each is made of a helical spring. A neutral position holding spring 6 is interposed in a compressed state, and each suppression ring 20 is pressed by the neutral position holding spring 6 and the supporting protrusion 2
1, the valley suppression ring 20 holds the grip 7 and the operating rod 18 in a neutral position via the bottle 19.

A pair of semicircular sleeves 25 each having a locking flange on the outer periphery of the upper end are fitted into a small-diameter shaft portion 24 provided at the top of the load hanging device 5 consisting of a hook, and a rotation prevention groove extending in the vertical direction is formed. The pair of semicircular sleeves 25 are fitted into a support cylinder 27 which is provided with a male thread 26 and a male thread on the outside,
The support cylinder 27 is screwed into a female thread provided at the lower end of the holding cylinder 6, and the locking set screw 28 screwed into the lower end of the holding cylinder 6 is inserted into the locking groove 26. The upper end surface of the luggage hanger 5 and the snap ring 2
A stone 29 is interposed between the load hanger 5 and the load hanger 5 to prevent it from floating up.

A support frame 30 is fixed in the control device box 1 with screws, and a drive shaft 51 extending in the lateral direction is rotatably supported by the support frame 30.
A drive leaf spring 33 made of a thin metal strip spring is wound around a circular drive member 32 fitted and fixed to the drive member 52, and one end of the drive leaf spring 5 is fixed to the drive member 52. , further, the other end of the drive plate spring 65 is connected to the operating rod 1.
8 by screws 54.

A low speed hoisting switch LS-L is installed on the support frame roller 0.
U and low-speed hoisting switch LS-LD are fixed by screws 55 in a superimposed state, and high-speed hoisting switch L
The S-HU and the high-speed lowering switch LS-HD are fixed in a superimposed state by screws 56, and each switch is arranged so as to be aligned on a straight line parallel to the drive shaft filter 1, and further, on the drive shaft 51, A striker 58 for low speed hoisting that operates the switch lever 37 of the low speed hoisting switch LS-LU
and switch lever 5 of the low speed lowering switch LS-LD.
9, a striker 42 for high-speed hoisting that operates the switch lever 41 of the high-speed hoisting switch LS-HU, and a high-speed hoisting striker 42 that operates the switch lever 41 of the high-speed hoisting switch LS-HU.
A high-speed lowering striker 44 for operating the HD switch lever 45 is fixed.

Each of the switches is connected to the power supply control section of the electric hoisting device via a cable 45, and is connected to a low speed hoisting switch LS-
The phase around the drive shaft of the switch lever operating section of the low speed hoisting striker 68 and the switch operating section of the high speed hoisting striker 42 is adjusted so that the LU is operated first as well as the high speed hoisting switch LS-HU. is set, and the switch lever operating section of the low-speed lowering striker 40 and the high-speed lowering striker 44 are set so that the low-speed lowering switch LS-LD is operated before the high-speed lowering switch LS-HD. The phase around the drive shaft with the switch lever operating section is set. FIG. 7 shows the low-speed hoisting striker 38, the low-speed hoisting striker 40, the switch lever 57 of the low-speed hoisting switch LS-LU, and the low-speed hoisting switch LS-LU when the grip 7 and the operating rod 18 are in the neutral position. -LD
Fig. 8 shows the relationship between the high-speed hoisting striker 42, the high-speed hoisting striker 44, and the high-speed hoisting switch LS-HU when the grip 7 and the operating rod 18 are in the neutral position. The relationship between the switch lever 41 and the switch lever 4 of the high-speed lowering switch LS-HD is shown. Further, an operating rod 18 that is moved up and down by the grip 7 via a pin 19, and a drive shaft 51 that is rotated by the operating rod 18 via a driving plate spring roller and a driving member 52 are used for operating the striker. An interlocking mechanism is configured.

When a DC motor is used as the motor in the electric hoist main body 1, the hoisting and hoisting speeds are converted by changing the resistance value of the power source and converting the voltage of the power source.

Further, when using AC parent-child motors with different rotational speeds as electric motors in the electric hoist main body 1, switching operation of the motors is performed by controlling a changeover switch.

In the two-speed operation operating device for an electric hoisting device according to the first embodiment, a worker grasps the grip 7 with one hand and moves the grip 7 upward against the elasticity of the upper neutral position holding spring 6. As the operation is continued, the operating rod 18 is moved upward by the grip 7 via the pin 19, and the operating rod 18 rotates the driving member 52 in one direction via the driving plate spring 55. Drive shaft 51 by drive member 32
Each striker is also rotated in one direction via the switch L for low speed hoisting by the striker 58 for low speed hoisting.
The switch lever 37 of the S-LU is operated, and the low-speed hoisting operation of the electric hoisting device is started by a signal from the low-speed hoisting switch LS-LU.

When the grip 7 is further moved upward, the high speed hoisting switch LS-HU is activated by the high speed hoisting striker 42.
When the switch lever 41 is operated, the electric hoisting device is switched to high-speed hoisting operation by a signal from the high-speed hoisting switch LS-HU.

When the push-up blade of the grip 7 is loosened, the push ring 20 and pin 1 are moved by the force of the upper neutral position holding spring 6.
9, the grip 7 and the operating rod 18 are moved downward, and each striker is rotated in the other direction, and the high-speed hoisting switch LS is activated by the high-speed hoisting striker 42.
- When the operation of MU is released, the electric hoisting device is switched to low-speed hoisting operation, and then when the operation of the low-speed hoisting switch LS-LU by the low-speed hoisting striker 8 is released, the electric hoisting device is switched to low-speed hoisting operation. When the low-speed hoisting operation of the upper device is stopped and then the grip 7 is released, the grip 7 is held at the neutral position by the force of the neutral position holding spring 6.

Furthermore, when the grip 7 is held with one hand and moved downward against the elasticity of the lower neutral position holding spring 6, the grip 7 moves the operating rod 1 through the pin 19.
8 is moved downward, and the operating rod 18 rotates the drive member 32 in the other direction via the drive plate spring 33, and the drive member 32 also rotates each striker in the other direction via the drive shaft 51. First, the switch lever 69 of the low-speed lowering switch LS-LD is operated by the low-speed lowering striker 40, and the low-speed lowering switch of the electric hoisting device receives the signal from the low-speed lowering switch LS-LD. Downward operation is started.

When the grip 7 is further moved downward, the high-speed lowering switch LS-HD is activated by the high-speed lowering striker 44.
When the switch lever 43 is operated, the electric hoisting device is switched to high-speed lowering operation in response to a signal from the high-speed lowering switch LS-HD.

When the pressing blade of the grip 7 is loosened, the force of the lower neutral position holding spring 6 causes the suppression ring 20 and the pin 1 to be loosened.
9, the grip 7 and the operating rod 18 are moved upwardly, and each striker is rotated in one direction, and the high-speed lowering switch LS is activated by the high-speed lowering striker 44.
- When the HD operation is released, the electric hoisting device is switched to low-speed lowering operation, and then when the operation of the low-speed lowering switch LS-LD by the low-speed lowering striker 40 is released, the electric hoisting device is switched to low-speed lowering operation. When the low-speed lowering operation of the device is stopped and then the grip 7 is released, the grip 7 is held at the neutral position by the force of the neutral position holding spring 6.

Therefore, in the case of the above-mentioned embodiment, by performing a simple operation of simply holding the Grino f7 with one hand and moving it upward or downward, the electric hoisting device can be started and stopped, the hoisting speed can be changed, and the hoisting speed can be adjusted. speed switching.

10 to 14 show a second embodiment of the present invention, in which an upper hook 46 for hanging is connected to the upper part of an electric hoisting device main body 1 consisting of an electric chain block main body, and The upper part of the cable support member 47 is connected by the bolt 14 to the hanging end of the load lifting strip 2 made of a load chain hanging from the load sheave of the hoisting device main body 1, and the cable support member 47 The upper end of the vertical holding cylinder is threadedly connected to a vertical male threaded shaft 48 provided at the center of the lower part of the cylinder, and the holding cylinder 5 and the cable support member 47 connected thereto are connected to each other by the support member 4. It is configured.

A cylindrical grip 7 having anti-slip irregularities on the outer periphery is slidably fitted on the outside of the middle part of the holding cylinder 3, and a grip 7 in the vertical direction is provided on both sides of the middle part of the holding cylinder 3 in the diametrical direction. A slit 17 extending to
The flange 49 of the cylindrical striker 50 equipped with a cylindrical striker 50 is slidably fitted into the middle part of the holding barrel, and a vertical stopper front detent protrusion 58 is provided inside the holding barrel. It is provided integrally, and furthermore, the protrusion 58 has a
The connecting screws 51, which are fitted into the anti-rotation groove provided on the seventh flange 49 and extend low on both sides in the diametrical direction at the middle part of the grip 7, are inserted into the slit 17 and inserted into the striker 50. It is provided in the flange 49 and is screwed into a female threaded hole.

A switch holder 55 is constructed by connecting short, small-diameter cylinders 5 and 54 at both upper and lower ends of a cylinder 52 extending in the vertical direction, and the striker 5 is arranged outside the intermediate portion of the cylinder 52.
The small-diameter cylindrical body 53 at the top of the switch holder 55 is fitted into the upper support ring 56 which is slidably fitted into the upper part of the holding cylinder 5 and which is screwed and fixed to the upper part of the holding cylinder 5. Lower support ring 5 screwed and fixed to the lower part of 3
7, the small-diameter cylindrical body 54 at the bottom of the switch holder 55 is fitted, and the press ring 20 and the upper support ring 5 are in contact with the upper and lower parts of the flange 49 of the striker 50.
6 and the lower support ring 57, neutral position holding springs 6 each made of a helical spring are interposed in a compressed state.

A low-speed hoisting switch LS-LU and a high-speed hoisting switch LS-HU disposed above are fitted into the opening provided in the upper side wall of the cylinder 52 and fixed with an adhesive or the like. , and a low-speed lowering switch LS-LD and a high-speed lowering switch LS-HD arranged below are fitted into the opening provided in the lower side wall of the cylindrical body 52 using adhesive or the like. Furthermore, each switch is connected to the power supply control section of the electric hoisting device via a telescopic spiral cable 45, and the suspended load lifting strip 2 is inserted through the spiral portion of the cable 45. A cargo hanger 5 is threadedly connected to the lower end of the holding tube 3.

In the two-speed operation operating device of the second embodiment, the grip 7
When the striker 50 moves upward from the neutral position shown in FIG. 10 with one hand, the switch lever 57 of the low-speed hoisting switch LS-LU is operated, and A low-speed hoisting operation of the electric hoisting device is started by a signal from the switch LS-LU.

When the striker 50 is further moved upward by the grip 7, the switch lever 41 of the high-speed hoisting switch LS-HU is operated by the striker 50, and the electric hoisting is started by the signal of the high-speed hoisting switch LS-HU. The device is switched to high speed hoisting operation.

When the push-up blade of the grip 7 is loosened, the grip 7 and the striker 50 are first moved downward by the force of the upper neutral position holding spring 6, and the striker 50 operates the high-speed hoisting switch LS-HU. Since the electric hoisting device was released, the electric hoisting device was switched to low speed hoisting operation, and then the operation of the low speed hoisting switch LS-LU by the striker 50 was released, and the low speed hoisting operation of the electric hoisting device was stopped. Afterwards, the grip 7 returns to the neutral position.

Next, when the grip 7 is held with one hand and moved downward from the neutral position shown in FIG. 10, the switch lever 9 of the low speed lowering switch LS-LD is operated by the striker 50, and the Low-speed lowering operation of the stain movement hoisting device is started by a signal from the low-speed lowering switch LS-LD.

When the grip 7 is further moved downward, the switch collar 45 of the high-speed lowering switch LS-HD is operated by the striker 50, and the high-speed lowering switch LS-HD is operated by the striker 50.
-The electric hoisting device is switched to high-speed lowering operation by the HD signal.

When the pressing blade of the grip 7 is loosened, the grip 7 and the striker 50 are first moved upward by the force of the lower neutral position holding spring 6, and the striker 50 operates the high-speed lowering switch LS-HD. is released, the electric hoisting device is switched to low-speed lowering operation, and then the operation of the low-speed lowering switch LS-LD by the striker 50 is released, and the low-speed lowering operation of the electric hoisting device is stopped. Afterwards, the grip 7 returns to the neutral position.

In the case of an electric hoisting device equipped with a two-speed operating device configured as described above, during lifting and lowering transportation of empty boxes, lifting and lowering movement of the load hanging device 5 when there is no load, and during lifting and lowering transportation, etc. It can operate at high speeds, and also at the start of lifting the load and at the end of lifting the load.

It is possible to perform low-speed operation when seating the load to be lowered, and when lowering the suspended object to a predetermined position.
If the suspended load is deviated laterally, the load can be easily lowered to a predetermined position by pushing down the grip 7 while suppressing it laterally and performing low-speed lowering operation. Can be done.

When carrying out this invention, when the grip 7 is moved upward, the high-speed hoisting switch LS-HU is operated before the low-speed hoisting switch LS-LU, and when the grip 7 is moving downward, the low-speed hoisting switch LS-HU is operated earlier than the low-speed hoisting switch LS-LU. The high-speed lowering switch LS-HD may be operated earlier than the switch LS-LD. Further, a winding leaf spring is wound around a leaf spring winding ring fitted and fixed to the drive shaft 31, and the winding inner end of the winding leaf spring is fixed to the leaf spring winding ring, and The other end of the winding leaf spring is fixed to the support frame 0, and due to the elasticity of the winding leaf spring, the drive member 62 is connected to the drive member 62 via the leaf spring winding ring and the drive shaft 31. A rotational force in the direction of winding up the leaf spring 53 may be applied.

As the structure for attaching the load hanger 5 to the lower end of the holding cylinder 5, any structure other than those shown may be employed. Moreover, as the luggage hanging tool 5, any hanging metal fittings may be used instead of the hooks. Furthermore, the present invention can be implemented in a two-speed operating device for an electric hoist having a winding drum for raising and lowering a wire lobe.

〔Effect of the invention〕

According to this invention, by simply grasping the grip 7 with one hand and moving it upward from the neutral position, the hoisting operation of the electric hoisting device can be started, and the grip 7 can be moved up and down above the neutral position. By changing the directional position, it is possible to switch between low-speed hoisting and high-speed hoisting, and by simply holding the grip 7 with one hand and moving it downward from the neutral position, the hoisting operation of the electric hoisting device can be started. In addition, by changing the vertical position of the grip 7 below the neutral position, it is possible to switch between low-speed lowering and high-speed lowering. By simply performing a downward movement of the hoist, it is possible to easily carry out the two-speed hoisting operation and the two-speed hoisting operation of the electric hoisting device.

[Brief explanation of the drawing]

1 to 9 show a first embodiment of the present invention, in which FIG. 1 is a partially longitudinal front view showing a two-speed operation operating device for an electric hoisting device, and FIG. 1 is an enlarged longitudinal sectional front view showing the lower part of the lower part, FIG. 5 is a longitudinal sectional front view showing the upper part of the two-speed operation operating device for electric hoisting equipment, and FIG. 4 is A-A of Fig. 2. Line enlarged sectional view, Figure 5 is B-Bm in Figure 2.
6 is an enlarged sectional view taken along the line C-C in FIG. 2, and FIG. 7 is a low-speed hoisting striker, low-speed hoisting striker, low-speed hoisting switch switch lever, and low-speed hoisting switch. A side view showing the relationship between the lowering switch and the switch lever, Figure 8 shows the relationship between the high-speed hoisting striker, the high-speed lowering striker, the high-speed hoisting switch switch lever, and the high-speed lowering switch switch lever. FIG. 9 is a front view of a traveling electric hoisting device having a two-speed operation operating device according to the present invention. Figures 10 to 1
FIG. 4 shows a second embodiment of the present invention.
Fig. 0 is a longitudinal sectional front view showing a two-speed operation operating device for an electric hoisting device, Fig. 11 is a side view thereof, Fig. 12 is a longitudinal sectional front view showing an enlarged part of Fig. 10, and Fig. 13. is D in Figure 10.
-D line, 1 enlarged cross-sectional view, and FIG. 14 is a front view of the electric hoisting device having the two-speed operation operating device of the present invention. In the figure, 1 is the main body of the electric hoisting device, 2 is a strip for lifting and lowering a suspended load, 5 is a holding cylinder, 4 is a support member, 5 is a load hanging device, 6 is a spring for maintaining a neutral position, 7 is a grip, 15 1 is a control device box, 17 is a slit, 18 is an operating rod, 19 f'i pin, 20 is a press ring, 21 is a supporting protrusion, 22 is a spring bearing ring, 25 is a snap ring, 31 is a drive shaft, 5
2 is a drive member, 53 is a drive leaf spring, 57 is a switch lever, 38 is a striker for low speed hoisting, 59 is a switch lever, 40 is a striker for low speed hoisting, 41 is a switch lever, and 42 is a striker for high speed hoisting. 2 squid, 45 is a switch lever, 44 is a striker for high-speed lowering, 45 is a cable,
50 is a striker, 51 is a connecting screw, 55 is a switch holder, 5″6 is an upper support ring, 571″l is a lower support ring, LS-LU is a low-speed hoisting switch, LS-
HU is a switch for high-speed hoisting, LS-LD is a switch for low-speed hoisting, and LS-HD is a switch for high-speed hoisting.

Claims (1)

[Claims] A strip 2 for lifting and lowering a suspended load hanging from the electric hoisting device main body 1
A baggage hanger 5 is connected to the hanging end of the holding tube 3 via a support member 4 having a holding tube 3 extending in the vertical direction, and a grip is held in a neutral position by a neutral position holding spring 6 on the holding tube 3. 7 is fitted in the supporting member 4 so as to be freely raised and lowered, and a low-speed hoisting switch LS-LU and a high-speed hoisting switch LS-HU, which are sequentially operated via a striker by the upward movement of the grip 7, are installed in the support member 4, and a grip. Two-speed operation for an electric hoisting device, characterized in that a low-speed hoisting switch LS-LD and a high-speed hoisting switch LS-HD are sequentially operated via a striker by the downward movement of the electric hoisting device. Operating device.