JPH0433922B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to drives, and more particularly, but not exclusively, to devices for opening and closing gates.

These devices are known for opening and closing gates, where a motor rotates the gate via a gear mechanism such as a worm gear.

However, difficulties have arisen in providing a satisfactory system for manually operating the gate when the need arises.

According to the present invention, a gate opening/closing device is provided,
The device includes an input mechanism driven by a motor, an output mechanism from the gate moving device, and a mechanism for transmitting motion from the input mechanism to the output mechanism. The mechanism includes a clutch mechanism for manual operation of the gate, and the clutch mechanism includes a clutch pressure plate, a bearing plate, and a spring mechanism that controls rotation of the output mechanism. When a predetermined moment is applied about the shaft, the predetermined force forces the pressure plate against the bearing plate and slides the clutch mechanism, thereby effecting manual operation of the gate.

The clutch mechanism is preferably enclosed within a clutch housing, and the housing is preferably filled with a lubricating liquid.

The transmission mechanism preferably comprises a gear mechanism and the bearing plate may be a gear wheel of the gear mechanism.

The output mechanism, gear wheel and clutch pressure plate are preferably mounted for rotation about a common axis.

Because the output mechanism and clutch pressure plate rotate,
Preferably it is fixedly fixed on a common shaft and the gear wheel is preferably mounted on the shaft to provide relative rotational movement between the gear wheel and the shaft.

The gear wheel can be rotatably mounted on a mounting element fixed for rotation with the shaft, which mounting element provides an axial stop against the axial movement of the gear wheel under the bias of said spring mechanism. It has an abutment mechanism to provide an axial stop.

Preferably, the spring mechanism comprises a number of spaced springs circumferentially surrounding the axis of rotation of the pressure plate. They have 4 to 10 springs,
For example, 7 pieces is sufficient.

The gear wheel may be driven by a worm gear.

In addition to the gate opening/closing device according to the invention, the invention further provides a motor for driving the device.

This motor is capable of driving a worm wheel, which in turn drives a worm gear, which in turn drives said gear wheel.

By way of example, one embodiment of the device according to the invention will be explained with reference to the accompanying drawings.

As shown in FIGS. 1 and 2, the drive device, generally designated 10, comprises a body 11, which is a plate 12 mounted at ground level and set, for example, in concrete, with four holes 13. Contains those that have been formed.

Below the plate 12 is a housing part 1 for accommodating a gear device and a clutch assembly.
4 is extended.

The description of the mechanism and its operation shall begin with the motor drive end and end with the output from the device.

The drive of the device as well as the gate through the device is conveniently carried out by a motor 15, in particular an electric motor. The motor drives a worm gear within the motor casing 16, which in turn drives a ring gear 17 which is fixed for rotation with an input shaft 18 supporting the worm gear 19.
The bolts 20 connect the housing 16 to the motor flange 2.
1 and bolts 22 also secure the motor flange 21 with the end cap 23 and the end cap 23 in the completed assembly.
is threadedly engaged with the housing portion 14. The oil seal 24 is fitted onto the shaft 18 and a bearing 25, in this case a ball bearing supporting the shaft 18.

The ring gear 17 is fixed by a wedge 26 for rotation with the shaft 18.

The end of the shaft 18 remote from the ring gear 17 is supported in a second bearing 27, which in turn is supported by an end cap 28 which screws into the housing part 14.

The worm gear 19 is fitted with a worm wheel 30 rotatably mounted on the boss 31. Boss 31 is in turn mounted on output shaft 32, and boss 31 is secured by a wedge 33 for rotation with output shaft 32.

The output shaft 32 is mounted for rotation within the housing portion 14 by upper and lower bearings 34 and 35, respectively, in this case using ball bearings. Lower bearing 35 is supported within housing cover 36.

Below the worm wheel 30 the clutch pressure plate 40 is wedged 41 for rotation with the boss 31.
Fixed by

Below the pressure plate 40, a spring base 42 is fixed to the boss 31 by a ring nut 43 threaded onto the lower end of the boss 31. a set of coil springs 4
4 engage recesses 45 in the pressure plate 40 and these springs 44 act on the spring base 42 and the pressure plate 40 to press the worm wheel 30 into frictional engagement with the boss 31. Spring base 42 also has a recess formed therein and is further engaged by spring 44 to prevent movement and sliding of the spring.

Two oil seals 50 and 51 seal a chamber surrounding the clutch and worm wheel mechanism, and a cap 52 is provided adjacent to the chamber for filling the chamber with lubricant, such as lubricating oil. .

The upper end of the shaft 32 supports an output arm 60 secured by a wedge 61 for rotation with the shaft 32. Bolts 62 serve to secure output arm 60 to shaft 32, and cap 63 is fitted over the free end of shaft 32.

The output arm 60 is secured to the gate in use.

Finally, the lower cover 70 is fixed to the plate 12 by bolts 71.

To explain the operation, the motor 15 is connected to the shaft 18.
and worm gear 19 on shaft 18 drives worm wheel 30 to rotate output shaft 32, thereby opening or closing the associated gate. If manual opening and closing of the associated gate is required, the clutch assembly applies once a predetermined moment about the axis of rotation of the gate by means of the boss 31 and the clutch pressure plate 40 sliding against the worm wheel 30. , which allows this kind of manual operation. Although the strength of the spring 44 determines the moment required to cause the clutch assembly to slide, the advantage of this assembly is that it allows reliable and trouble-free manual operation of the associated gates. Lubricating oil in the clutch and worm gear housing reduces friction and noise.

[Brief explanation of drawings]

FIG. 1 is a cutaway view of the device according to the invention, and FIG. 2 is an exploded view showing all parts constituting the device of FIG. 1 and its motor drive mechanism. Explanation of symbols, 10... Drive device, 14... Housing portion, 15... Motor, 18... Input shaft, 19... Worm gear, 24, 50, 51...
... Oil seal, 25 ... Bearing, 27 ... Second bearing, 30 ... Worm wheel, 32 ... Output shaft, 34 ... Upper bearing, 35 ... Lower bearing,
40...Clutch pressure plate, 42...Spring base,
44...Coil spring, 60...Output arm.

Claims (1)

[Scope of Claims] 1. An input mechanism driven by a motor, an output mechanism leading to a gate moving device, and a transmission mechanism that transmits motion from the input mechanism to the output mechanism and includes a clutch mechanism, The clutch mechanism comprises a clutch pressure plate and a gear wheel biased toward the clutch pressure plate by a spring mechanism, the output mechanism, the gear wheel, and the clutch pressure plate being mounted about a common axis of rotation. , the output mechanism and the clutch pressure plate are fixed on the shaft of rotation, and the spring mechanism has a spring strength that slides the clutch mechanism by applying a predetermined moment about the shaft of rotation to which the output mechanism is fixed. A gate opening/closing device characterized by having: 2. The device of claim 1, wherein the clutch mechanism is housed within a clutch housing. 3. The device of claim 2, wherein the housing is filled with a lubricating liquid. 4. The device according to claim 1, 2 or 3, wherein the gear wheel is driven by a worm. 5. Claims 1, 2, 3, or 4, wherein the spring mechanism includes a large number of spaced apart springs surrounding the rotation axis.
Apparatus according to any of paragraphs. 6. The device according to claim 5, wherein any number of springs from 4 to 10 are provided. 7 Claims 1 and 2 combined with a motor that drives the device for opening and closing the gate,
The apparatus according to any of paragraphs 3, 4, 5, or 6.