JPH0662131U - Standing elevator - Google Patents

Abstract

(57) [Abstract] [Purpose] Achieving cost reduction, weight reduction, and space saving by reducing the number of parts in a standing elevator. In a stand-and-lift elevator of a type in which a carriage 116 is horizontally suspended by chains 114A to 114D at its four apexes, only one servo motor 102 is provided, and the servo motor 102 is used as a speed reducer 108.
First output shaft 13 for decelerating and extracting the rotation of the output shaft of
1 and the second output shaft 1 for taking out rotations having the same rotational speed as the first output shaft 131 but different rotational directions by interposing an idler with respect to the first output shaft 1.
32 is provided. As a result, the chains can be wound and unwound by rotating both ends of each of the first and second output shafts 131 and 132, and two motors 102, two couplings 104, and one electromagnetic motor, which are conventionally required for each two, can be obtained. Brake 106 and speed reducer 10
It becomes possible to have only one 8 each.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a so-called standing elevator.

[0002]

[Prior art]

 Conventionally, a carriage having a rectangular plane for mounting a vehicle is horizontally hung by ropes or chains at its four vertexes, and the effective length of the ropes or chains is changed using an electric motor and a speed reducer. As a result, a standing elevator for raising and lowering the vehicle has been widely put into practical use.

FIG. 4 and FIG. 5 show this typical configuration.

The outputs of the servomotors (electric motors) 2A, 2B are transmitted to the speed reducers 8A, 8B via the couplings 4A, 4B and the electromagnetic brakes 6A, 6B, and the decelerated rotations are taken out to their shafts 10A, 10B. To be done. Sprockets 12A to 12D are provided at both ends of the shafts 10A and 10B, respectively, and four chains 14A to 14D respectively engaged with the sprockets are connected to four apexes of the carriage 16, and the sprockets 12A to 12D are connected to each other. The effective length of the chains 14A to 14D is changed by the rotation of ~ 12D, and the carriage 16 is moved up and down (moved up and down). In the figure, reference numeral 18 indicates a counter weight, 20 indicates a vehicle to be moved up and down, and 21 indicates a ceiling base.

[0005]

[Problems to be solved by the device]

 However, since such a conventional standing elevator has a structure in which two drive units are symmetrically arranged and four outputs are obtained by this, the servomotors 2A and 2B, the couplings 4A and 4B, and the electromagnetic brake 6A are provided. , 6B, reduction gears 8A, 8B, etc. were required for each two.

The present invention has been made in view of such a conventional problem, and by improving the speed reducer, four sprockets are synchronized by one electric motor and then rotated / rotated. It is an object of the present invention to provide a standing elevator which has a simple structure that can be controlled, is lower in cost, is lighter in weight, and saves space.

[0007]

[Means for Solving the Problems]

 According to the present invention, a carriage having a rectangular plane for mounting a vehicle is horizontally suspended by ropes or chains at its four apexes, and the effective length of the ropes or chains is determined by using a motor and a speed reducer. By changing the vertical elevating elevator for elevating and lowering the vehicle, the number of the electric motors is reduced to one, and the speed reducer is used to reduce the rotation of the output shaft of the electric motors and extract the output shafts. A 1: 1 output shaft is provided with a 1: 1 idler gear to provide a second output shaft for taking out rotation whose rotation speed is equal to that of the first output shaft and whose direction is opposite to that of the first output shaft. The above problem is solved by winding and unwinding the rope or chain by rotating both ends of the first and second output shafts. .

[0008]

[Action]

 In the present invention, the speed reducer having the two output shafts rotating at the same rotation speed and in the opposite directions by using the idler gear is used. Therefore, each of the electric motor, the coupling, the electromagnetic brake, and the speed reducer is used. Since it can be done individually, cost reduction, weight reduction, space saving, and control simplification of the drive unit can be realized.

[0009]

【Example】

 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 and FIG. 2 show an embodiment of a standing elevator according to the present invention.

The standing elevator includes a carriage 116 on which a vehicle 120 is placed and which has a substantially rectangular plane. The ends of the chains 114A to 114D are connected at four vertexes of the carriage 116, and the carriage 116 is configured to be horizontally suspended by the four chains 114A to 114D. The effective length (suspension length) of the chains 114A to 114D is changed, so that the vehicle 120 is moved up and down. This basic configuration is almost the same as the conventional one.

However, the standing and elevating machine according to this embodiment is greatly different from the conventional one in that only one servo motor 102 and one speed reducer 108 are provided in order to change the effective length.

As shown in FIG. 3, the speed reducer 108 receives the rotation of the output shaft 130 of the servo motor 102 from the input shaft 135, decelerates the first output shaft 131, and takes it out. A bevel gear reduction unit 142 including gears 140 and 141 and a spur gear reduction unit 152 including spur gears 150 and 151 are provided.

Further, the speed reducer 108 has the same rotation speed and a different rotation direction as the first output shaft 131 via an idler gear 161 having the same number of teeth as the spur gear 151 with respect to the first output shaft 131. It comprises a second output shaft 132 from which the rotation is taken out.

The first and second output shafts 131 and 132 have sprockets 112A to 112D similar to the conventional ones at both ends thereof, and the chains 114A to 114D meshing with the sprockets 112A to 112D are driven by the sprockets 112A to 112D. It has become so. As described above, one end of the chain is connected to the four apexes of the rectangular carriage 116, as described above, and the other ends are connected to the counterweights 118A to 118D, respectively.

In the figure, reference numeral 104 indicates a coupling, and 106 indicates an electromagnetic brake. As is clear from the figure, only one of the coupling 104 and the electromagnetic brake 106 is provided because the servo motor 102 and the speed reducer 108 are only one. Reference numeral 120 is a ceiling base.

Next, the operation will be described.

When the output shaft 130 of the servo motor 102 is rotated, this rotation causes the input shaft 135 of the speed reducer 108 to rotate via the coupling 104 and the electromagnetic brake 106. The rotation of the input shaft 135 is reduced in two stages via the bevel gear reduction unit 142 and the spur gear reduction unit 152, and the reduced rotation is extracted from the first output shaft 131.

On the other hand, at the same time, the rotation speed of the first output shaft 131 and the rotation speed of the second output shaft 132 is increased by the idler gear 161 having the same number of teeth as the spur gear 151 provided on the first output shaft 131. Rotations that are equal but opposite in direction are picked up.

As a result, the sprockets 112A to 112D provided at both ends of the output shafts 131 and 132 rotate exactly like the conventional sprockets 12A to 12D, so that the sprockets 112A to 112D are rotated. The chains 114A to 114D, which are meshed with each other as in the conventional case, are driven, and the carriage 116 is moved up and down.

According to this embodiment, the two output shafts 131 and 132 are driven by the single servo motor 102, so that the four chains 114A to 114D are sure to move at the same speed and by the same amount. Therefore, the horizontal position of the carriage 116 can always be kept good.

Further, since only one servo motor, one coupling, one electromagnetic brake, and one speed reducer are required, cost reduction, weight reduction, and space saving of the drive unit can be realized. Further, it becomes possible to simplify the control and reduce the cost.

[0023]

[Effect of device]

 As described above, according to the present invention, the rope or chain for raising and lowering the carriage can be simultaneously driven by the single electric motor and the speed reducer in the elevating elevator, thus reducing the cost and weight. Also, an excellent effect that space can be saved can be obtained.

Also, the effect of simplifying the control can be obtained.

[Brief description of drawings]

FIG. 1 is a side view of a main part of a standing elevator which is applied with the present invention.

FIG. 2 is a schematic plan view of the same.

FIG. 3 is a skeleton diagram showing a main part of the speed reducer used in the above embodiment.

FIG. 4 is a side view of a main part corresponding to FIG. 1 showing a conventional standing elevator.

FIG. 5 is a schematic plan view of the conventional standing and elevating machine corresponding to FIG.

[Explanation of symbols]

 102 ... Servo motor 104 ... Coupling 106 ... Electromagnetic brake 108 ... Speed reducer 112A-112D ... Sprocket 114A-114D ... Chain 116 ... Carriage 118 ... Counter weight 131 ... First output shaft 132 ... Second output shaft 161 ... Idler gear

Claims (1)

[Scope of utility model registration request] 1. A carriage having a rectangular plane for mounting a vehicle is horizontally suspended by ropes or chains at its four apexes, and the effective length of the ropes or chains is determined by using a motor and a speed reducer. In the standing and elevating elevator for elevating and lowering the vehicle by changing, only one electric motor is provided, and the speed reducer reduces the rotation of the output shaft of the electric motor and extracts the first output shaft; By providing a 1: 1 idler gear with respect to the output shaft, there is provided a second output shaft which takes out rotation whose rotation speed is equal to that of the first output shaft and whose direction is opposite to that of the first output shaft. A standing elevator comprising: hoisting and unwinding the rope or chain by rotating both ends of the second output shaft.