JPH0867463A - Plunger guide device of hydraulic elevator - Google Patents

Abstract

PURPOSE: To provide a plural guide device capable of flexible response to various installation demands of a hydraulic elevator and requiring less installation mandays. CONSTITUTION: A guide rail 51 is vertically set in parallel with a plunger in a hydraulic elevator elevating a cage by the plunger of a jack. The guide rail 51 is made of H-type steel, and a first guide surface 60, a pair of second guide surfaces 61, 62 and a pair of third guide surfaces 63, 64 are provided on one of a pair of flunges 55, 56. A guide shoe 52 is provided on a sheave frame 35 provided on an upper end of the plunger. The guide shoe 52 is furnished with a first shoe material 71 and a second shoe material 72 facing against each other. The first shoe material 71 makes contact with the first guide surface 60, the second guide surface 61 and the third guide surface 63. The second shoe material 72 makes contact with the first guide surface 60, the other second guide surface 62 and the other third guide surface 64.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plunger guide device for guiding up and down movements of a plunger of a hydraulic elevator.

[0002]

2. Description of the Related Art Generally, as shown in FIG. 9, a hydraulic elevator is provided with a jack 3 having a cylinder 1 and a plunger 2, and a hydraulic power unit 4 for taking pressure oil in and out of the cylinder 1, and a hydraulic power unit 4 is provided.
By this, the plunger 2 is stroked in the vertical direction. A sheave 6 is rotatably provided on a sheave frame 5 attached to the upper end of the plunger 2.
One end of the suspension rope 7 wound around the sheave 6 is connected to the car 8, and the other end of the suspension rope 7 is connected to a fixed side member such as the cylinder 1. Then, the cage 8 is moved up and down inside the elevator hoistway 9 by expanding and contracting the plunger 2.

In such a conventional hydraulic elevator, T-shaped guide rails 11 and 12 for guiding the plunger are set up on both sides of the plunger 2 as a plunger guide device 10 for guiding the lifting and lowering operation of the plunger 2. Sheave frame 5 provided on the upper end of the plunger 2.
It is known that guide shoes 13, 14 are attached to both sides in the longitudinal direction. Then, as shown in FIG. 10, both guide shoes 13 and 14 are fitted to the guide rails 11 and 12 to guide the vertical movement of the plunger 2.

[0004]

In the conventional plunger guide device 10 described above, since the guide rails 11 and 12 for guiding the plunger must be stood on both sides of the plunger 2, the sheave frame 5 has a longitudinal direction (see FIG. 9). In the horizontal direction), the size of the plunger 2 in the hoistway 9 is large, and the installation position of the plunger 2 is largely restricted. Further, since it is necessary to erect two guide rails 11 and 12, it takes a lot of man-hours to construct a conventional hydraulic elevator.

Therefore, an object of the present invention is to solve the above-mentioned problems and to have a high degree of freedom with respect to the installation position of the plunger,
It is an object of the present invention to provide a plunger guide device for a hydraulic elevator that can flexibly meet various installation requirements for the hydraulic elevator and that requires less installation man-hours.

[0006]

SUMMARY OF THE INVENTION The present invention, which was developed to achieve the above object, includes a hydraulic pressure unit including a jack provided with a cylinder and a plunger that stroke in the vertical direction, and a hydraulic power unit for moving pressure oil into and out of the cylinder. In a hydraulic elevator that elevates and lowers a car by a device, the jack is arranged beside or on the back side of the car, and one plunger guide guide rail is provided vertically in parallel with the jack, and the plunger guide guide is provided. The rail is provided with a plurality of guide surfaces that come into contact with the guide shoe provided on the plunger side to restrict the movement of the plunger in the front-rear direction and the left-right direction and allow the vertical movement. It is designed to guide the lifting movement of the plunger.

The plunger guide guide rail is made of, for example, an H-section steel or an I-section steel having a pair of flanges and a web connecting the center portions of these flanges. On one side, a first guide surface located on the outer surface side, a pair of second guide surfaces located on both end sides of the first guide surface, and a pair of third guide surfaces located on the inner surface side of the flange are provided. Provided,
By bringing the guide shoes into contact with these five guide surfaces in total, it is preferable to prevent the plunger from swinging in the front-back direction and the swing in the left-right direction and guide the plunger only in the vertical direction.

Further, the guide shoe is the first of the shaped steel.
A first shoe member contacting the guide surface and one second guide surface and one third guide surface; a first shoe member contacting the first guide surface of the shaped steel and the other second guide surface and the other third guide surface; 2 shoe materials, and the pair of shoe materials may be arranged to face each other.

[0009]

Since the plunger guide device for the hydraulic elevator according to the present invention is configured as described above, it is possible to smoothly move the plunger in the up-and-down direction while restraining the front-rear and left-right swings of the plunger, even though one guide rail is used. Will be able to guide you. For this reason, the space in the hoistway required to install the guide rails is smaller than that of the conventional device, and therefore the degree of freedom in the installation position of each member of the plunger guide device including the plunger is high, and various hydraulic elevators can be installed. It can meet installation requirements and reduce installation man-hours.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described below with reference to FIGS.
Will be described with reference to. Hydraulic elevator 2 shown in FIG.
0 is a jack 2 for raising and lowering a car 23 inside an elevator hoistway 22 provided in a building 21 such as a building.
It is equipped with 4. The jack 24 includes a cylinder 25 fixed to the body 21, and a plunger 26 that vertically strokes with respect to the cylinder 25. The jack 24 is arranged next to or behind the car 23.

Further, a hydraulic power unit 30 for taking in and out pressure oil is provided in the cylinder 25, and the hydraulic pressure generated in the hydraulic power unit 30 is supplied to the oil feed pipe 31.
The plunger 26 is raised by feeding it into the cylinder 25 via the. That is, the jack 24 and the hydraulic power unit 30 constitute a hydraulic device 33 for moving the car 23 up and down. As shown in FIG. 4, inside the hoistway 22, a guide rail 32 is provided for guiding the hoisting operation of the car 23.

A sheave frame 35 is attached to the upper end of the plunger 26, and a sheave (plunger sheave) 36 is provided on the sheave frame 35. The sheave 36 has a shaft 3
It can rotate around 7. One end of the suspension rope 40 wound around the sheave 36 is connected to the car 23. The other end of the hanging rope 40 is connected to a fixed side member 41 such as the cylinder 25. Therefore, by expanding and contracting the plunger 26, the car 23 can be moved up and down with a stroke that is twice the expansion and contraction length of the plunger 26.

A plunger guide device 50 is provided to guide the lifting and lowering operation of the plunger 26.
The plunger guide device 50 includes a single plunger guide guide rail 51 provided parallel to and perpendicular to the jack 24, and a guide shoe 5 provided on the sheave frame 35.
2 and.

As shown in FIG. 2, a guide rail 51 is provided.
Is a pair of flanges 55 and 56 and these flanges 5.
It is made of a steel material having an H-shaped cross section (H-shaped steel) having a web 57 connecting the central portions of the members 5, 56. However, for the guide rail 51, a steel material having an I-shaped cross section (I-shaped steel) in which the ratio of the flanges 55 and 56 is shorter than that of the H-shaped steel may be used.

One of the pair of flanges 55, 56 of the guide rail 51 made of the above shaped steel is attached to one of the flanges 55, 56.
The first guide surface 60 located on the outer surface side and the first guide surface 6
A pair of second guide surfaces 61, 62 located on both end sides of 0
And a pair of third guide surfaces 63, 64 located on the inner surface side of the flange 55. The angle formed by the first guide surface 60 and the second guide surfaces 61, 62 is substantially 90 °.
And the third guide surfaces 63, 64 and the first guide surface 60 are parallel to each other. These five guide surfaces 60 to 64 in total are each finished flat by machining or the like.

As shown in FIG. 1, the guide shoe 52
Includes a first shoe material 71 and a second shoe material 72. The first shoe material 71 is the first guide surface 6 described above.
0, one second guide surface 61, and one third guide surface 63 are in contact with each other. Second shoe material 72
Is a first guide surface 60 and the other second guide surface 62,
It comes into contact with the other third guide surface 64.
The pair of shoe members 71, 72 are arranged so as to face each other.

The guide shoe 52 of this embodiment is one side surface 76 of the left and right side surfaces 75, 76 of the sheave frame 35.
It is provided in. More specifically, this guide shoe 5
2 is a substrate 81 fixed to one side surface 76 of the sheave frame 35 by an appropriate fixing means 80 such as bolts or welding;
A U-shaped frame 83 fixed to the substrate 81 by appropriate fixing means 82 such as bolts or welding, and a pair of holders 84 and 85 fixed to the inner surface side of the frame 83 at positions facing each other with screws or the like. Is equipped with. The shoe members 71 and 72 are provided on the holders 84 and 85. The substrate 81 is a fixing means 82 such as a bolt.
Has an arch-shaped convex portion 86 when viewed from the upper side so that the sheave frame 35 does not hit the side surface 76 of the sheave frame 35.
The substrate 81 can be directly attached to the.

According to the plunger guide device 50 of the above embodiment, although the single guide rail 51 is used, the pair of shoe members 71 and 72 suppress the swinging of the plunger 26 in the front-back direction and the swinging in the left-right direction. In addition, the plunger 26 can be smoothly guided only in the vertical direction.

Next, another embodiment of the present invention will be described with reference to FIGS. The same parts as those in the above-mentioned embodiment are designated by the same reference numerals and the description thereof will be omitted.
The plunger guide device 90 of this embodiment includes a sheave frame 35.
A guide shoe 93 is provided on one end face 91 side of the front and rear end faces 91, 92 in the longitudinal direction. This guide shoe 93 is used for the first shoe member 7 as in the above embodiment.
The first shoe member 72 and the second shoe member 72 are provided. The first shoe member 71 is configured to contact the first guide surface 60 of the guide rail 51, the one second guide surface 61, and the one third guide surface 63. The second shoe material 72 is the first
The guide surface 60, the second guide surface 62 on the other side, and the third guide surface 64 on the other side are in contact with each other. The pair of shoe members 71, 72 are arranged to face each other.

The guide shoe 93 of this embodiment has the sheave frame 3 by means of appropriate fixing means 95 such as bolts or welding.
5, a U-shaped frame 98 fixed to the substrate 96 by appropriate fixing means 97 such as bolts or welding, and fixed to the inner surface of the frame 98 at positions facing each other with screws or the like. A pair of holders 8
4, 85 and. And this holder 84,85
Shoe materials 71 and 72 are provided. The substrate 96 is
It has an arm portion 99 bent in a U shape when viewed from the upper surface side, and the board 96 is directly attached to the side surfaces 75 and 76 of the sheave frame 35 such that the sheave frame 35 is sandwiched by the arm portions 99. .

The plunger guide device 9 of such an embodiment
No. 0, even though one guide rail 51 is used, the swinging of the plunger 26 in the front-back direction and the swinging in the left-right direction can be suppressed by the pair of shoe members 71, 72, and the plunger 26 can be smoothly moved only in the vertical direction. You can have them guide you.

[0022]

According to the present invention, since the installation area of the plunger guide device in the elevator hoistway can be reduced, the degree of freedom in the installation position of the plunger and the like can be greatly expanded as compared with the prior art, and the hydraulic elevator can be installed in the same manner. Since it can flexibly cope with various hoistways, and since only one guide rail for the plunger guide is required, the number of installation steps of the plunger guide device can be reduced as compared with the conventional case.

[Brief description of drawings]

FIG. 1 is a plan view showing a cross section of a part of a plunger guide device according to an embodiment of the present invention.

FIG. 2 is a sectional view of a guide rail used in the plunger guide device shown in FIG.

3 is a side view schematically showing the entire hydraulic elevator equipped with the plunger guide device shown in FIG. 1. FIG.

4 is a cross-sectional view schematically showing the hydraulic elevator shown in FIG.

5 is a rear view of a portion of a guide rail for the plunger guide device shown in FIG.

FIG. 6 is a side view schematically showing the entire hydraulic elevator showing another embodiment of the present invention.

7 is a cross-sectional view schematically showing the hydraulic elevator shown in FIG.

8 is a plan view showing a part of the plunger guide device of the hydraulic elevator shown in FIG. 6 in section.

FIG. 9 is a side view schematically showing a part of a conventional hydraulic elevator.

FIG. 10 is a plan view showing a cross section of a part of a conventional plunger guide device for a hydraulic elevator.

[Explanation of symbols]

20 ... Hydraulic elevator 22 ... Hoistway 23 ... Basket 24 ... Jack 25 ... Cylinder 26 ... Plunger 30 ... Hydraulic power unit 33 ... Hydraulic device 35 ... Sheave frame 36 ... Sheave 50 ... Plunger guide device 51 ... Plunger guide guide rail 52 ... Guide Shoe 55, 56 ... Flange 57 ... Web 60 ... First guide surface 61, 62 ... Second guide surface 63, 64 ... Third
Guide surface 71 ... First shoe material 72 ... Second shoe material 75, 76 ... Side surface of sheave frame 90 ... Plunger guide device 91, 92 ... End surface of sheave frame 93 ... Guide shoe

Claims (6)

[Claims] 1. A hydraulic elevator in which a car is lifted and lowered by a hydraulic device including a jack having a vertically stroked cylinder and a plunger, and a hydraulic power unit for taking pressure oil in and out of the cylinder. It is arranged on the back side, and one plunger guide guide rail is provided vertically in parallel with the jack, and the plunger guide guide rail is in contact with the guide shoe provided on the plunger side and the front and rear of the plunger. Of a hydraulic elevator characterized in that a plurality of guide surfaces for restricting the movement in the horizontal and horizontal directions and permitting the movement in the vertical direction are provided, and the one guide rail guides the vertical movement of the plunger. Plunger guide device. 2. The hydraulic elevator according to claim 1, wherein the guide rail for guiding the plunger is made of H-section steel or I-section steel having a pair of flanges and a web connecting the center portions of these flanges. Plunger guide device. 3. A first guide surface located on the outer surface side of one of the pair of flanges of the shaped steel, a pair of second guide surfaces located on both end sides of the first guide surface, and a flange. A pair of third guide surfaces located on the inner surface side of the
3. The hydraulic pressure according to claim 2, wherein the guide shoes are brought into contact with a total of five guide surfaces to suppress the sway of the plunger in the front-back direction and the sway of the left-right direction and guide the plunger only in the up-down direction. Elevator plunger guide device. 4. The guide shoe comprises: a first shoe member which is in contact with the first guide surface of the shaped steel, one second guide surface and one third guide surface; and a first guide surface of the shaped steel. 4. The hydraulic elevator according to claim 3, further comprising a second shoe member that is in contact with the other second guide surface and the other third guide surface, and the pair of shoe members are arranged to face each other. Plunger guide device. 5. A sheave frame for rotatably supporting a sheave is provided on an upper portion of the plunger, and the guide shoe is provided on one of left and right side surfaces of the sheave frame. A plunger guide device for a hydraulic elevator according to claim 1. 6. A sheave frame for rotatably supporting a sheave is provided on an upper portion of the plunger, and the guide shoe is provided on one end face side of front and rear end faces in a longitudinal direction of the sheave frame. The plunger guide apparatus for a hydraulic elevator according to claim 1, wherein the plunger guide apparatus is a hydraulic elevator.