CN1266014A

CN1266014A - Method and device for horizontal height compensation of elevator lifting/lowering cage

Info

Publication number: CN1266014A
Application number: CN 99110429
Authority: CN
Inventors: 吉田秀雄
Original assignee: HYDRAULIC DRIVING INDUSTRY Co Ltd
Current assignee: HYDRAULIC DRIVING INDUSTRY Co Ltd
Priority date: 1999-03-03
Filing date: 1999-07-08
Publication date: 2000-09-13
Anticipated expiration: 2019-07-08
Also published as: CN1167593C; JP2000255920A; HK1029094A1; JP3298840B2

Abstract

To solve the difference in level caused by the loading and unloading of a load in the stop position of an elevator by inching the fixed end of a lifting wire by a hydraulic cylinder so as to eliminate the difference between the floor surface of an elevator car and the floor of a building. The vertical position of a hitch plate 5 in the state having no level difference between the floor surface of an elevator car 1 and the floor of a building is regulated to the center position 19c of the stroke of a hydraulic cylinder 6. According to such an initial set, when it is detected that the floor surface of the elevator car 1 is higher than the floor surface of the building in the stop of an elevator, the solenoid descending valve 20 of a hydraulic circuit is operated to lower the hitch plate 5 until it is detected by a lower limit switch 19b, whereby the level of the elevator car 1 is corrected. When the level of the elevator car 1 is low, a hydraulic pump 21 is operated to raise the hitch plate 5 until it is detected by an upper limit switch 19a, and the elevator car 1 is raised to regulate the level.

Description

The level height compensation method and the device of elevator lifting case

The present invention relates to the winding type elevator stopped that level height is carried out inching so that the floor level of this elevator and always consistent method and the device thereof of the floor level of building.

In adopting the elevator of hoist cable, though the total weight of this elevator chamber and Loaded goods system is added on the hoist cable that elevator chamber is suspended in midair this hoist cable always is stretched, because institute applies and varies in weight, the amount of tension of hoist cable is different.

In addition, make the floor level of elevator consistent so that Loaded goods is passed in and out from elevator usually at stop position with the floor level of building.

Therefore, for example with Loaded goods when elevator outwards transports, quickly the lighten amount of tension of hoist cable of the total weight of this elevator then diminishes.Consequently elevator chamber rises a little again in this rest position, makes the floor level of elevator be higher than the floor level of building and produce step.In this state, with the turnover operation that the makes later Loaded goods difficulty that becomes, the turnover operation of transport trolley of particularly using band scroll wheel such as chassis is owing to this step becomes more difficult.

In addition, when weight was transported into elevator, the floor level that will be lower than building owing to the floor level of this elevator conversely produced opposite step.

The objective of the invention is to eliminate the above-mentioned step that produces because of the Loaded goods turnover.

Promptly, the level height compensation method of elevator lifting case of the present invention, its characteristics are, ground-surface difference in level to the building of the ground of elevator lifting case and this elevator rest position detects, make by oil cylinder the lifting that fastens with this elevator chamber with fine motion about the fixed end of hoist cable to eliminate this difference in level.

In addition, level height compensating device of the present invention, its characteristics are, fasten and make in this elevator chamber elevator up and down at hoist cable that will have fixed end and coiling end and the pulley that is installed on the elevator chamber by this hoist cable being promoted or rewinding, the fixed end of hoist cable is connected with the towing plate that supports by oil cylinder, with interior upper and lower at least the limit switch that fastens with this towing plate is set at the stroke up and down of this towing plate, and the rest position that is arranged on this elevator is when detecting level height about the ground of this elevator lifting case and building ground-surface, until till being detected by the limit switch of this top or bottom, make this difference in level reduce the oil hydraulic circuit that start oil rises towing plate or extraction start oil descends towing plate in this oil cylinder of force feed on the direction.

The accompanying drawing simple declaration:

Fig. 1 illustrates one embodiment of the invention, and wherein Fig. 1 (a) is general description figure, and Fig. 1 (b) is for illustrating the part instruction diagram of protruding part and limit switch part.

Fig. 2 wants the amplification profile of portion for Fig. 1.

Fig. 3 is the instruction diagram that another embodiment of the present invention is shown.

Fig. 4 wants the amplification profile of portion for Fig. 3.

Embodiments of the invention below are described.

(embodiment 1)

Shown in Fig. 1 (a), have pulley (2) on the elevator chamber of winding type elevator (1), an end of the hoist cable (3) on this pulley fastens with another dead sheave (4) and is connected with not shown winch.And the fixed end of this hoist cable other end and the towing plate (5) that is arranged in the building etc. as described below are fixing.

This towing plate is supported by oil cylinder (6), (6) that upright setting is fixed in the building etc., is fixed with cylindrical body (7) below central portion, passes in this cylindrical body (7) fixed end of hoist cable (3) is fixed.Further as shown in Figure 2, this cylindrical body (7) is slided in towing plate slidably is fixed on the inner peripheral surface of the tubular guide (8) in building etc. up and down shape.(9) are lining among the figure, and (10) are dust ring, and (11) are O shape circle, and (12) are filler, and (13) are piston, and (14) are the grease nozzle, and (15) are exhaust gear, and (16) are exhausr port.In addition, (17) connect and stay the through hole of upside from the below for the other end that is used to make hoist cable.

In addition, the outer peripheral edges of towing plate (5) are provided with protruding part (18) and as the contact of limit switch.Shown in Fig. 1 (b), this limit switch (19a) though-(19c) a plurality of along vertically in the stroke of oil cylinder (6), being provided with of fixed buildings side, but normally 1 (19a) respectively is set (19b), then is provided with 1 (19c) that is used to detect in addition at the middle position of the trip at the bound place of the trip.In addition, also can on the outer peripheral edges of towing plate (5), limit switch be set, and protruding part be set in the fixed buildings side.

In this elevator, the upper-lower position of the towing plate when elevator lifting case ground and constructure ground are not had horizontal diff-H state is adjusted to the stroke middle position (19c) of oil cylinder (6) and locates.Because such initial setting, the occasion that when after this elevator running, stopping, elevator chamber ground is detected than constructure ground the raised area with not shown photoelectric switch etc., electromagnetic type lowering valve (20) action by making oil hydraulic circuit and the limit switch (19b) that start oil discharges and make towing plate (5) to drop to the below from oil cylinder (6), (6) detected till, the level height of this elevator chamber is revised.

Otherwise when the elevator chamber level height is low, makes oil pump (20) action and start oil is sent into oil cylinder (6), (6), and till the limit switch (19a) that makes towing plate (5) rise to the top detects, this elevator chamber is risen and level height is regulated.

In addition, (22) are by pass valve among the figure, and (23) are variable flow rate valve, and (24) are check valve, and (25) are pressure switch, and (26) are pressure gauge, and (27) are electrical motor.

(embodiment 2)

As substituting to cylindrical body (7) among the embodiment 1 and tubular director (8), as shown in Figure 3 and Figure 4, its structure is for to be arranged on the axis of guide (29) more than fixed buildings 2 places, and the guiding retainer (28) that is installed on the towing plate (5) is gone up slip at this axis of guide (29).

Adopt this structure, when towing plate (5) up and down the time, guiding retainer (28) can not only make its action stable, and can add and prevent the effect of rotating, the transverse force minimizing that piston (13) is subjected to.

In Fig. 4, (30) represent lining in addition, (31) expression grease nozzle.

For example in the elevator chamber of elevator, loaded or when taking out the Loaded goods of constant weight in the past, the elevator ground level is below or above the constructure ground level height when stopping because of elevator, be difficult to this Loaded goods is steadily taken out (especially when use has the chassis etc. of scroll wheel), and as adopting the present invention, then, wait remarkable result so have the use of being easy to owing to directly compensating to this difference in level.

Claims

1. the level height compensation method of an elevator lifting case, it is characterized in that, ground-surface difference in level to the building of the ground of elevator lifting case and described elevator rest position detects, make by oil cylinder the lifting that fastens with described elevator chamber with fine motion about the fixed end of hoist cable to eliminate described difference in level.

2. the level height compensating device of an elevator lifting case, it is characterized in that, fasten and make in the described elevator chamber elevator up and down at hoist cable that will have fixed end and coiling end and the pulley that is installed on the elevator chamber by described hoist cable being promoted or rewinding, the fixed end of hoist cable is connected with the towing plate that supports by oil cylinder, with interior upper and lower at least the limit switch that fastens with described towing plate is set at the stroke up and down of described towing plate, and the rest position that is arranged on described elevator when difference in level about the ground of described elevator lifting case and building ground-surface is detected until till being detected by the limit switch of described top or bottom, make described difference in level reduce the oil hydraulic circuit that start oil rises towing plate or extraction start oil descends towing plate in the described oil cylinder of force feed on the direction.