JP3263358B2 - Position adjustment device for cage of rope type elevator - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a position adjusting device, and more particularly to a position adjusting device for a cage of a rope type elevator.

[0002]

2. Description of the Related Art Conventionally, a rope type elevator is provided with a position adjusting device for adjusting a height position of a cage.

FIG. 4 is a diagram showing an example of the configuration of a rope type elevator 1. As shown in FIG. 4, shaft PS is provided in the building, the machine chamber M S is provided in the upper portion of the hoistway PS. The machine chamber M S, hoist 11, rope fixing device 12, the position correction device 13, and a control panel 14 is provided. In the hoistway PS, a cage 16 suspended by a rope 15 and a counterweight 17 are provided. Rope 15
Has one end fixed to the rope fixing device 12 and the pulley 17
a, the other end is connected to the position correcting device 13 via the sheave 11a and the pulleys 16a and 16b.

When the sheave 11a rotates by driving the hoist 11, the rope 15 travels and the cage 16 moves up or down. The counterweight 17 moves in a direction opposite to that of the cage 16. The position correcting device 13 operates when the driving of the hoist 11 is stopped, and moves the rope 15 up and down within a range of several tens of centimeters. Thereby, the height position of the cage 16 is finely adjusted.

The necessity of fine adjustment of the height position of the cage 16 is that when the cage 16 is stopped at a floor, a large amount of luggage is loaded into the cage 16 and the weight increases, and as a result, the rope 15 When the cage 16 is extended and sinks, and a step is formed between the cage 16 and the floor, or conversely, a large amount of luggage is unloaded from the cage 16 and the weight is reduced.
This is the case where the cage 16 is lifted due to shrinkage and a step is formed between the cage 16 and the floor surface. Further, when the forklift enters the cage 16 for loading and unloading the load, the change in the weight is further increased. As a result, the forklift that has entered the cage 16 cannot be taken out due to the step and cannot enter the cage 16. In the case of people getting on and off, it is not easy to get in and out of the wheelchair.

FIGS. 5 and 6 show a conventional position correcting device 13.
It is a figure showing j and 13k. In FIG. 5, a position correcting device 13j includes a guide rod 82 erected on a base 81,
82, a beam 83 that can move up and down along the guide rods 82, 82, a hydraulic cylinder 84 that drives the beam 83 up and down,
84 and a hydraulic unit 85. The rope 15
After passing through a hole provided in the base 81, the locking spring device 15a
Is locked on the upper surface of the beam 83.

When the hydraulic cylinders 84, 84 are driven upward, the beam 83 is driven upward, the rope 15 is pulled up, and the cage 16 is raised. Hydraulic cylinders 84, 84
Is lowered, the beam 83 is lowered, the rope 15 is lowered, and the cage 16 is lowered.

[0008] In FIG. 6, the position correction device 13k, the frame 9 1 provided on the base 81, the guide member 9 3, 9 4 housing 92 is movable up and down by the frame 9 in 1, the housing 92 Hydraulic cylinder 9 for driving up and down
5 and a hydraulic unit 96. The rope 15 passes through a hole provided in the base 81 and is locked to the housing 92 by the locking spring device 15a.

When the hydraulic cylinder 95 is driven upward, the casing 92 is driven upward, the rope 15 is pulled up, and the cage 16 is raised. When the hydraulic cylinder 95 is lowered, the housing 92 is lowered, the rope 15 is lowered, and the cage 16 is lowered.

[0010]

The position correcting device 13j shown in FIG. 5 uses two hydraulic cylinders 84, 84. In general, when the rod of the hydraulic cylinder is extended, the rod is supported. The distance between the bearings, that is, the distance between the gland provided on the rod cover and the piston is shortened, so that it becomes weak to lateral load, so-called "Kose"
Tends to occur. Therefore, two guide rods 82 are indispensable in order to smoothly move the beam 83 up and down, and the number of parts is increased, the structure is complicated, the weight is increased, and the size is increased. In addition, the number of assembling steps increases and the cost increases.

[0011] In the position correction apparatus 13k illustrated in FIG. 6, it is possible to drive a single hydraulic cylinder 95 of the guide member 9 3 for housing 92 to prevent rotation,
9 4 is required. Further, since the hydraulic cylinder 95 is mounted on the frame 9 1, there is a disadvantage that the higher the total height of the device. If overall height is increased, it must be correspondingly increasing the height of the machine room M S. The higher the height of the machine room M S, along with the cost is applied to the building, there is also can cause problems of building regulations.

The present invention has been made in view of the above-mentioned problems, and eliminates the drawbacks of the conventional hydraulic cylinder, enables smooth lifting and lowering drive without a guide rod, and has a simple structure and an overall height. It is an object of the present invention to provide a position adjusting device for a cage of a rope type elevator which does not become large.

An object of the present invention is to provide a position adjusting device and a cylinder device applicable to devices other than the rope type elevator.

[0014]

According to a first aspect of the present invention, there is provided a position adjusting device for adjusting a height position of an elevator car by driving a rope hanging the elevator car up and down. A base, a rod is fixed to the base in a state parallel to each other, a plurality of cylinder devices of a double rod type in which the rod penetrates a cylinder tube, and each cylinder tube of the plurality of cylinder devices A beam for moving the rope up and down by moving the rod integrally with the cylinder tube as a guide, and a fluid pressure source for supplying a pressure fluid to the cylinder device. .

According to a second aspect of the present invention, in the cylinder device, the rod has a large-diameter portion and a small-diameter portion at positions spaced apart in the axial direction, and the cylinder tube has the large-diameter portion and the large-diameter portion. Sliding members are provided so as to cover the peripheral surfaces between the small portions, and sliding members for sliding closely to the large-diameter portion or the small-diameter portion are attached to both ends of the cylinder tube. Become.

[0016]

According to a third aspect of the present invention, there is provided a rod having a large-diameter portion and a small-diameter portion at positions separated from each other in the axial direction and adjacent to each other; A cylinder tube provided so as to cover the peripheral surfaces thereof and not to contact the rod, and attached to both ends of the cylinder tube so as to be tight against the large diameter portion or the small diameter portion. A sliding member that slides on the small diameter portion;
Stopper for preventing the cylinder tube from falling out
And the cylinder tube is opposed to the rod.
And sliding members at both ends between slidable strokes
Supported by bearing distances separated by a certain distance between
I get it.

As the sliding member, a sliding material, a sealing material, a scraper or the like is used. As the cylinder device, a hydraulic cylinder is generally used, but a cylinder device using another pressure fluid may be used.

[0019]

FIG. 1 is a front view of a position correcting device 13 according to the present invention. FIG. 2 is a hydraulic circuit diagram of the position correcting device 13.
FIG. 3 is a diagram schematically showing the hydraulic cylinders 23 and 24.

In FIG. 1, a position correcting device 13 includes a base 21, poles 22a and 22b, and hydraulic cylinders 23 and 2.
4. Beam 25, hydraulic unit 26, and control device 27
Consists of

The base 21 is made of, for example, a steel material such as an H-shaped steel, an I-shaped steel, another type steel, a steel pipe, or the like. The poles 22a and 22b are vertically fixed to the upper surface of the base 21. Hydraulic cylinders 23, 24 are mounted in parallel to the poles 22a, 22b at positions closer to the inside of the poles 22a, 22b.

The hydraulic cylinders 23 and 24 are of a double rod type, and are fixed to the base 21 at one end of the rods 41 and 41, respectively, at the other end.
It is fixed to the bracket 221 provided in 2a, 22b. The beam 25 is fixed to the cylinder tubes 42, 42 of the hydraulic cylinders 23, 24, respectively. Rope 1
5 passes through a hole provided in the base 21 and is locked on the upper surface of the beam 25 by the locking spring device 15a. The locking spring device 15a has a built-in compression coil spring to reduce the impact applied to the rope 15.

As shown in FIG. 2, the hydraulic unit 26
Oil tank T, hydraulic pump P1, electric motor M1, switching valve V
1, V2, etc., for supplying and discharging hydraulic oil to and from the hydraulic cylinders 23, 24. Since the hydraulic cylinders 23 and 24 have the same structure, only one of them will be described below.

[0024] Returning to FIG. 1, the rod 41 of the hydraulic cylinder 23 has a large diameter portion 41 b and a small diameter portion 41 a in the axial direction of the remote location, they are formed integrally, or separately After being formed, they are integrated by screw connection or the like. The large diameter portion 41 b oil flow passage 46 is formed in the center in the axial direction, opening into the cylinder chamber 4 8 in the boundary portion between the large diameter portion 41 b and a small diameter portion 41 a. Oil flow passage 46 is communicated with the port 4 7 provided at the end of the large diameter portion 41 b.

It should be noted, it is possible to provide a port 4 7 to the small diameter portion 41 a, it is also possible to provide the cylinder tube 42. Cylinder tube 4 of hydraulic cylinder 23
A cover 43 is attached to one end of 2. Cover 43
The slide member 45 to tightly slide relative to the small diameter portion 41 a is provided. A sliding member 44 is provided at the other end of the cylinder tube 42. These sliding members 44, 45
Is a sliding material for smoothly sliding on the surface of the rod 41,
It is composed of a packing for sealing, a dust wiper, a scraper or the like.

The poles 22b are provided with sensors S1, 2, 3 for detecting the height position of the beam 25.
Based on the signals from the sensors S1, S2, S3, the controller 27
Controls the hydraulic unit 26 to adjust the height position of the beam 25. For example, while the cage 16 is running, the beam 25
Is stopped at an intermediate position. At an intermediate position of the beam 25, for example, the sensor S2 outputs a detection signal.

[0027] In the position correction apparatus 13, the pressure oil port 4 7 of the hydraulic cylinders 23 and 24 is supplied, the pressure oil flows into the cylinder chamber 4 8 through the oil flow passage 46, the cylinder tube 42 above Drive to When the pressure oil from the port 4 7 is discharged, the cylinder tube 42 moves downward. Incidentally, the cylinder tube 42 abuts stop the bracket 221 when it is driven upward, contact with stops on the end face of the large diameter portion 41 b when driven downward. That is, the bracket 221 functions as a stopper for the cylinder tube 42 on the extension side.

The beam 25 is provided with cylindrical portions 51, 51 on both sides. After fitting into the outer peripheral surface of each cylinder tube 42, the beam 25 is fixed to a flange provided on the outer peripheral surface of the cylinder tube 42 by bolts. .

Therefore, when pressure oil is supplied to the hydraulic cylinders 23 and 24 and the cylinder tube 42 moves up and down, the beam 25 also moves up and down accordingly. The movement of the beam 25 raises or lowers the rope 15. Thereby, the position of the cage 16 shown in FIG. 4 is adjusted.

According to the position correction device 13 of the present embodiment,
The beam 25 is supported by two hydraulic cylinders 23 and 24, and is driven up and down. That is, the hydraulic cylinders 23 and 24 serve both as a drive for raising and lowering the beam 25 and as a guide. Therefore, the structure is simple, the number of parts is reduced, the weight is reduced, and the cost is reduced.

In the hydraulic cylinders 23 and 24, the cylinder tube 42 is always supported by the sliding members 44 and 45 with respect to the rod 41. In other words, the cylinder tube 42 is supported by a bearing distance separated by a fixed distance between the sliding members 44 and 45 at any stroke position. Therefore, it is resistant to a lateral load, and a smooth sliding operation can be performed without generating a so-called “kaze”.

The rod 41 is a cylinder tube 42
Instead of sliding on the inner peripheral surface of the cylinder tube 4, the inner peripheral surfaces of the sliding members 44 and 45 slide.
There is no need to finish the inner peripheral surface of the second part with high precision, and the processing is correspondingly easy. Although it is necessary to finish the outer peripheral surface of the rod 41 with high precision, the outer peripheral surface is easily processed.

Further, since the overall height of the position correcting device 13 does not increase as in the conventional position correcting device 13k,
There is no need to increase the height of the machine room M S. Since the poles 22a and 22b are only for supporting the hydraulic cylinders 23 and 24, they need not be finished with high precision.
Its presence does not add much cost.

In the above-described embodiment, an example is shown in which the position correcting device 13 shown in FIG. 1 is applied to correct the position of the cage 16 of the rope type elevator. It can be applied to machine tools and the like.

The hydraulic cylinders 23 and 24 can be applied to devices other than the position correction device 13.
The position correction device 13 according to the present invention is suitably used particularly for an elevator for luggage, but is also applied to an elevator for people. In this case, the cage 16 is used for stopping so that there is no step between the floor and the floor of each floor, and for performing fine adjustment so that there is no step between the cage 16 and the floor during the stop. . When the cage 16 is in the stopped state or in the low-speed moving state, the torque of the hoist 11 is weak.
By using the position correction device 13 in an auxiliary manner, it is possible to maintain a highly accurate stop position. In addition, by using the position correction device 13, it becomes possible to use an electric motor having a small torque at the time of low speed as the hoist 11, so that the cost of the hoist 11 can be reduced.

In the above embodiment, the position correction device 1
3, or the configuration, structure, shape, size, material, number, etc. of each part or the whole of the elevator can be appropriately changed in accordance with the gist of the present invention.

[0037]

According to the present invention, there is provided a position adjusting device which eliminates the drawbacks of the conventional hydraulic cylinder, enables smooth lifting / lowering drive without a guide rod, has a simple structure, and does not increase the overall height. can do.

According to the fourth aspect of the present invention, it is possible to provide a cylinder device suitably used for a position adjusting device.

[Brief description of the drawings]

FIG. 1 is a front view of a position correction device according to the present invention.

FIG. 2 is a hydraulic circuit diagram of the position correction device.

FIG. 3 is a view schematically showing a hydraulic cylinder.

FIG. 4 is a diagram illustrating an example of a configuration of a rope type elevator.

FIG. 5 is a diagram showing a conventional position correction device.

FIG. 6 is a diagram showing a conventional position correction device.

[Explanation of symbols]

13 the position correction apparatus (positioning apparatus) 15 rope 16 cage 21 base plate 23 and 24 a hydraulic cylinder (cylinder device) 25 beam 26 hydraulic unit (fluid pressure source) 41 Rod 41a diameter small portion 41b diameter size portion 42 the cylinder tube 44, 45 Sliding member

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int. Cl. ⁷ , DB name) B66B 1/00-1/52

Claims (3)

(57) [Claims] 1. A position adjusting device for adjusting a height position of an elevator car by driving a rope suspended from an elevator car, wherein the height position of the car is adjusted with respect to the base. And the rod is fixed, and a plurality of cylinder devices of a double rod type in which the rod penetrates the inside of the cylinder tube, is bridged between the cylinder tubes of the plurality of cylinder devices, and is integrated with the cylinder tube. A beam adjusting device for a rope-type elevator, comprising: a beam that moves the rod as a guide to drive the rope up and down, and a fluid pressure source that supplies a pressure fluid to the cylinder device. . 2. The cylinder device, wherein the rod has a large-diameter portion and a small-diameter portion at positions separated in the axial direction, and the cylinder tube extends between the large-diameter portion and the small-diameter portion. The sliding member is provided so as to cover the peripheral surface of the cylinder tube, and sliding members for sliding closely with the large-diameter portion or the small-diameter portion are attached to both ends of the cylinder tube, respectively. Rope elevator cage position adjustment device. 3. A rod having a large-diameter portion and a small-diameter portion at positions separated from each other in the axial direction and adjacent to each other , and a peripheral surface extending between the large-diameter portion and the small-diameter portion. A cylinder tube provided so as to cover and not contact with the rod; and a sliding member attached to both ends of the cylinder tube and sliding tightly against the large-diameter portion or the small-diameter portion. , Provided in the small diameter portion to prevent the cylinder tube from coming off.
The cylinder tube is slidable with respect to the rod.
Between the sliding members at both ends between
A guide cylinder device supported by a bearing distance apart by a distance .