CN1167593C

CN1167593C - Method and device for horizontal height compensation of elevator lifting/lowering cage

Info

Publication number: CN1167593C
Application number: CNB991104293A
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: 2004-09-22
Anticipated expiration: 2019-07-08
Also published as: HK1029094A1; JP3298840B2; JP2000255920A; CN1266014A

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

Technical field

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.

Background technology

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.

Summary of the invention

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

Promptly, the method that level height compensates that stops to winding type 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, except that winch, establish the height correction oil cylinder in addition, 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, will have fixed end and the hoist cable of the end of reeling be installed in that pulley on the elevator chamber fastens and by this hoist cable is promoted or back-roll so that in the elevator about this elevator chamber, the fixed end of hoist cable is connected with the towing plate that supports by oil cylinder, stroke up and down at this towing plate is provided with the limit switch that fastens with this towing plate with interior upper and lower at least, and an oil hydraulic circuit is set, exist on the ground that the rest position of elevator detects the ground of this elevator lifting case and building under the occasion of difference in level up and down, this oil hydraulic circuit reduces force feed start oil in oil cylinder so that towing plate rises for making difference in level, or extract start oil out so that towing plate descends, till being detected by the limit switch of top or bottom.

Description of drawings

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.

The specific embodiment

Embodiments of the invention below are described.

(embodiment 1)

Shown in Fig. 1 (a), have pulley 2 on the elevator chamber 1 of winding type elevator, 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 the

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 is lining among the figure, and 10 is dust ring, and 11 is 0 shape circle, and 12 is filler, and 13 is piston, and 14 is the grease nozzle, and 15 is exhaust gear, and 16 is 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), though this limit switch 19a-19c is a plurality of along vertically being provided with in the stroke of oil cylinder 6 of fixed buildings side, but normally 1

limit switch

19a, 19b respectively are set, then are provided with 1 limit switch 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 place of oil cylinder 6.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 actions by making oil hydraulic circuit and start oil discharged and makes towing plate 5 to drop to be detected by the limit switch 19b of below from

oil cylinder

6,6 till, the level height of this elevator chamber is revised.

Otherwise when the elevator chamber level height is low, makes oil pump 20 actions and start oil is sent into

oil cylinder

6,6, and till towing plate 5 being risen to detected, this elevator chamber is risen and level height is regulated by the limit switch 19a of top.

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

(embodiment 2)

As to the substituting of 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 slides on this axis of guide 29.

Adopt this structure, when towing plate was about in the of 5, 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 linings in addition, 31 expression grease nozzles.

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. method that level height compensates that stops to winding type 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, except that winch, establish the height correction oil cylinder in addition, make by described 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, will have fixed end and the hoist cable of the end of reeling be installed in that pulley on the elevator chamber fastens and by with described hoist cable lifting or back-roll so that in the described elevator chamber elevator up and down, the fixed end of hoist cable is connected with the towing plate that supports by oil cylinder, stroke up and down at described towing plate is provided with the limit switch that fastens with described towing plate with interior upper and lower at least, and an oil hydraulic circuit is set, exist on the ground that the rest position of described elevator detects the ground of described elevator lifting case and building under the occasion of difference in level up and down, this oil hydraulic circuit reduces force feed start oil in described oil cylinder so that towing plate rises for making described difference in level, or extract start oil out so that towing plate descends, till being detected by the limit switch of described top or bottom.