JPS59167470A - Compensation rope tension pulley device for elevator - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention is a compensating rope tension for an elevator that prevents an elevator passenger or a counterweight from jumping up due to the inertia of the other during an emergency stop due to an abnormal sudden drop of either one. The present invention relates to a lock release device for a vehicle device.

[Technical background of the invention]

In recent years, as buildings have become taller, the speed of elevator cars has tended to increase, with the traveling speed of the car reaching over 200 min/min, and this has led to the need for various new safety devices. One of them is a compensating rope tensioner device for elevators.

In other words, FIG. 1 is an overall view of the elevator, in which the passenger seat 2 and the counterweight 3 are moved relatively along the guide rail (not shown) by the hoisting machine 5 via the main lobe 4 inside the hoistway 1 of the building. It is arranged to be driven up and down, and the lower parts of the east hem 2 and counterweight 3 automatically tightly hug the guide rail in the event of an abnormally sudden drop at a speed higher than a normal speed due to some kind of malfunction, or in the worst case scenario, a fall. Emergency stop devices 6 and 7 are provided to activate and cause a sudden stop, and hydraulic shock absorbers 8 and 9 are also provided at the lower end of the hoistway 1 in case of a drop button.
are installed to cushion the impact of a fall and minimize damage. However, with only the above-mentioned safety device, if, for example, the east car 2 suddenly descends at a speed higher than the normal speed, the emergency stop device 6 will activate and the east car 2 will come to a sudden stop, but on the other hand, the counterweight 3 that is rapidly rising will Despite the sudden stop of step 2, it jumps up once due to inertia and falls by the amount of the jump, and there is a risk that the main rope 4 will break due to the impact of this fall. This phenomenon also occurs when, contrary to the above, the counterweight 3 suddenly stops and the rider and seat 2 jump up and fall, or when one of them collides with the hydraulic shock absorbers 8 and 9. A compensation lobe tensioning device 11 is provided in which the compensation lobe 10 and the compensation lobe 10 are wound around the lower part of the hoistway 1.

Here, to briefly describe the compensating lobe tension sheave device 1 with reference to FIGS. 2 and 3, a guide shoe JJA is installed between a pair of left and right tension sheave guide rails 12 that are erected and fixed at the lower end of the hoistway. 1-u ft+ up and down the support frame 14 through
A tension wheel 15 having a plurality of compensating lobes 10 wound around the supporting frame 14 is rotatably supported, and the lifting of the frame 14 is restrained above the top plate 14a of the supporting frame 14. The frame holding part 16 has a holding plate 16B attached above the top plate 14a so as to be movable up and down within an appropriate range by means of a plurality of rods J7A and 17B. A pair of left and right weights 18 are fixed on the weights 16a, and a guide shoe 13B that slides on the guide rail 12 is provided on the left and right weights 18. Further, a combination spring 19 and a tie-down spring 20 are interposed between the frame top plate 14m and the presser plate 16B.

The left and right weights 18 of the frame holding part 16 are made of U-shaped planar blocks as shown in FIGS. One side 18b of the recess 18a is inclined in a tapered shape, and the f-shaped side 18b bites in between the idle rails 12, and a roller 21 is disposed between the idle rails 12.
21 is supported by one end of a lever 23 which is pivotally attached to the outer surface of the weight 18 by a pin 22, and the other end of the lever 23 is pivotally connected to an angle 24 attached to the upper end of the rod 17B. .

During normal elevator lifting and lowering operations, the frame holder is attached to part 1.
The load of the weight 18 of No. 6 is transmitted from the presser plate 16th to the frame 14 via the tie-down spring 20 as a downward force,
The tension wheel 15 applies appropriate tension to the compensating lobe 10 while allowing the lobe 10 to rotate freely. Here, if either the passenger weight 2 or the counterweight 3 suddenly falls due to some kind of malfunction and the emergency stop device 6 or 7 is activated and comes to a sudden stop, the other one will try to jump up due to inertia. At this time, the springing force is transmitted from the compensating lobe 10 to the support frame 14 via the tension wheel 15, so that the support frame 14 rises against the load of the unit 18- of the frame presser section 16. Along with this, the rod 17B is moved to the lever 2.
3 is pushed up and rotated to lower the roller 21, whereby the roller 21 bites between the tapered side surface 18b and the guide rail 12, and the weight 18. locks the entire portion 16 against the guide rail 12 to prevent further elevation.

The supporting frame 14 that is about to rise further is received by the combination spring 19 on the lower surface of the presser plate 16a, absorbing the force of the springing up, and thus suppressing the lifting of the other one of the ride weight 2 or the counterweight 3 as much as possible. It becomes like this.

[Problems with background technology]

By the way, the above-mentioned elevator compensating lobe tensioning device 1
1, the east and 2 or counterweight 3 bounce 1
Once the 5rj is activated and becomes locked, it is very difficult to release the lock and return to the original normal state. In other words, the roller 21 is strongly bitten.
Conventionally, the lock was released by wrapping a wire lobe around the holding plate 16a and pulling it down with a chain block to float the roller 21.

For this reason, the work is carried out by bringing a large-scale device into a narrow space in the hoistway 1, so it is very difficult to bend and extend 1, and in order to release the biting of the left and right rollers 21, the pulling force must be applied evenly on both sides. There was a problem in that it was difficult to apply and it took a lot of effort and time.

[Purpose of the invention]

This invention was made in view of the above circumstances, and is a compensation for elevators that can be released very easily and reliably by a simple arrangement (locked state due to roller biting), and restoration work can be performed easily. An object of the present invention is to provide a lobe tension type device.

[Invention Fence Key]

This invention provides a compensating lobe tensioning device for an elevator, in which a stone 1+- is provided on the upper part of the guide rail, and a hydraulic jack is provided between the stopper and the frame holding part of the tension wheel support frame. The frame holding member is pushed down by the pressing force, and the rollers bitten into the guide rail are lifted up to release the lock.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to FIGS. 6 to 8. The basic structure of the 11 compensation lobe tensioning devices for elevators shown here, as well as the locking and suppressing operation when the counterweight or counterweight jumps up, are completely different from those of the conventional device described above. The same reference numerals as in FIGS. 1 to 5 are given to each part to simplify the explanation, and some parts of the structure are omitted from the illustration.

As shown in FIGS. 6 and 7, a stone/#-25 is provided horizontally on the upper end of the left and right guide rails 12 and 12 for the tension wheel. This Stotsuno 4-.
Reference numeral 95 designates a pair of front and rear U-shaped plates 26 and 27 that are arranged to sandwich the rail portions 1:la and 12B of the left and right guide rails 12 and 12, respectively. Flange portion 12b.

12b, and a flat plate 29 having a size substantially equal to the space between the U-shaped front plates 26 and 27 is interposed, and is firmly fixed with bolts and nuts 30. In addition, a pair of left and right hydraulic jacks 31, 31 are vertically interposed between the stopper 25 and the upper surface of the left and right weights 18, 18 of the portion 16 for holding the frame disposed below. These hydraulic jacks 31.3
1 consists of a cylinder 31a and a ram 31b that slides into the cylinder and projects upward, and this cylinder 31a is connected to a pressure pipe 32.
．． 32, it communicates with a hydraulic unit 33.33 provided in the bottom gutter of the hoistway.

Here, regarding the oil field unit 33, the 8th
It is constructed using the hydraulic circuit 34 shown in the figure, and 3 in the figure.
5 is an oil tank, and 36 and 37 are a pair of mutually interlocking manual pumps, both of which are operated by operating a handle 38. 39 is a high pressure safety valve, 40 is a low pressure safety valve, 41.42 is a check valve, and 43 is a stop valve. Normally, the stop valve 43 is left open to allow the ram 31b to freely descend, and when the check valve 43 is closed and the handle 38 is operated, the oil tank 31b is opened by the action of the manual pumps 36 and 37. The oil inside can be sucked up and discharged, and sent as pressure oil into the cylinder 31a of the jack 3 through the check valves 41 and 42. At this time, if the internal pressure of the cylinder 31m is lower than the set value of the low pressure safety valve 40. All of the pressure oil discharged from both manual pumps 36 and 37 is sent into the cylinder 31a, and when the internal pressure of the cylinder 31a exceeds the set value of the low pressure safety valve 40, the pressure oil discharged from the manual pump 37. The oil passes through the low-pressure safety valve 40 and flows back into the bent tank 35, and only the pressure oil from the manual pump 36 on one side is sent into the cylinder 31a. Note that when the internal pressure of the cylinder 31a exceeds the pressure tolerance of the jack 31, the pressure oil from the manual pump 36 is also transferred from the high pressure safety valve to the oil tank 3 to prevent damage.
5 for safety.

In the elevator compensating lobe tensioning device 11k having the above-described structure, the compensating lobe 10 is arranged so as not to interfere with the relative lifting movement between the east lift and the counterweight.
0 enclosure board 1 can be left free. If either the east weight or the counterweight suddenly drops due to some kind of failure and comes to a sudden stop due to the action of the emergency stop device, the other one will try to jump up due to inertia, so the compensation lobe 10 will compensate for the jumping up. In order to suppress the amount to a small amount through
are the left and right guide rails 12, 12 together with the left and right weights 18.
On the other hand, the rollers 21 and 21 bite into the tensioner 21, so that it is strongly tightened, resulting in a locked state in which the lifting of the tension sheave support frame 14 is suppressed.

After the rollers 21, 21 are in a locked state as in the conventional case, if you want to release the lock and recover, close the stop valve 43 of the oil field circuit 34 of the left and right hydraulic unit 33 and operate the handle 38. The manual pumps 36 and 37 are operated to suck up the oil in the oil tank 35, convert it into pressure oil, and pressurize it into the cylinder 31a of the jack 31 through the check valves 41 and 42, and then drive the ram 31b in the oil field. The lower frame presser portion 160 applies a downward force to the weight 18 when it is moved upwardly and is thereby stretched against the upper stopper 25 . At this time, if the pressure in the cylinder 31a becomes too strong and the hydraulic pressure in the cylinder 31a becomes higher than the set value of the low pressure safety valve 4.O, one of the manual pumps 3
Pressure oil discharged from 7 passes through the low-pressure safety valve 40 and circulates into the oil tank 35, so that only the pressure oil discharged from the manual pump 36 on one side is sent into the cylinder 31a. It becomes like this. In other words, the ram 31b rises more slowly than in the initial stage. In this way, by operating the left and right jacks 31 and 31 at the same time, the left and right rams 31b and 31b are slowly raised while keeping the left and right balance so that the holding plate 16a of the section 16 does not tilt, and the left and right kuwate 18
, 18 part was strongly pushed down. This caused the rollers 21.21 that had been bitten into the left and right guide rails 12°12
will rise and the lock will be released. After this, the tension wheel support frame 1 is again moved by the tension of the compensating lobe 10.
4 rises and the rollers 21, 21 do not bite.
Remove the bottle 22 and move the roller 21.21 to the lever 23.23.
After removing the whole thing and properly repairing the ride and counterweight, open the stop valve 43 and release the left and right jacks 3.
1. Return the oil in the cylinder 318.31a of 31, and slowly release the pressing force while keeping the left and right balance.

When each part returns to its original normal position, the rollers 21, 21 are again attached to the pin 22 via the levers 23, 23, and the restoration work is completed.

In addition, the above-mentioned strut horn 4'-25 and left and right jacks 31
．． 31 is not normally used, so remove it and store it in an appropriate place, and then remove the stone/F-25 and jack 31. It may be installed and unlocked in the same manner as above. In addition, the lower end of the cylinder 31a of the left and right jacks 31.31 may be brought into contact with the upper surface of the presser plate 16b in addition to the upper surface of the housing 18.
In any case, it is sufficient to press down the part 16 to attach the frame holder.

Since this invention is made as described above, the locked state due to roller biting can be achieved with a simple stone A? - It can be easily and reliably released using a hydraulic jack, and restoration work can be completed easily and safely in a short time without requiring large-scale equipment or taking up much space.

[Brief explanation of the drawing]

Fig. 1 is a schematic configuration diagram of an elevator, Fig. 2 is a partially omitted front view of a conventional compensating lobe tensioner for an elevator,
Figure 3 is a first view of the same temple, Figure 4 is an enlarged front view of the same part, Figure 5
The figure is a plan view of the weight section in Figure 4, Figures 6 to 8 show an embodiment of the present invention, Figure 6 is a front view with some parts omitted, and Figure 7 is a plan view of the weight part of Figure 4. FIG. 8 is an oil field circuit diagram of the hydraulic unit of the hydraulic jack. 1... Hoistway, 2... East car, 3... Counterweight, 4... Main rope, 5... Hoisting machine, 67.
・・Emergency stop device, 8, 9・・Lau pressure reversible device, 1o・・
・Compensation lobe, 11. IIk... Compensation lobe tension wheel device, 12... Guide rail, 1.9A, J, 9B...
・Guide shoe, 14...Support frame, 14a...Top plate, 15...Tension wheel, 16...Frame presser part, 16a
...Press plate, 17, 17B...Rod, 18...
・Weight, 18a... Concavity, 18b... Theno!
- Shape - Side, 19...Convenient spring, 20...Tie-down spring, 21...Roller, 22...Bin, 23
...Lever, 24...Angle, 25...Stopper, 26.27...U-shaped k, 2s, so...
・Boruto Natsuto, 29... flat [v, 3 J...
jack, 31a... cylinder, 31b... ram,
32... Hydraulic piping, 33... Oil field unit, 34...
...Hydraulic circuit, 35...Oil tank, 36.37...
Manual pump, 38...) 1 handle, 39...High pressure safety valve, 40...Low pressure safety valve, 41.42...Check valve, 43...Stop valve. Applicant's agent Patent attorney Takehiko Suzue Figure 1 3 Q 9 2nd Sen JP-A-59-167470 (6)

Claims (1)

[Claims] A compensating rope that is installed at the lower end of the elevator hoistway, connects the upper end to the east car and counterweight, and is wrapped around it will prevent either the passenger or the counterweight from suddenly dropping due to an abnormality. For elevators, when an emergency stop occurs, the frame presser part is locked by the roller biting into the guide rail, stopping the rise of the support frame of the tension car and suppressing the bounce to a small amount. In the compensating rope tensioning vehicle device, a stopper is provided on the upper part of the guide rail, and an oil field jack is provided between the stopper and the frame presser to push down the frame presser to release the roller from biting. A compensation rope tensioning device for an elevator, characterized in that it is provided with a compensating rope tensioning device for an elevator.