CN103079980B - Elevator device - Google Patents

Abstract

An object of the present invention is to provide an elevator apparatus that can safely prevent the movement of the elevator car and ensure a safe space for maintenance personnel entering the hoistway during maintenance. Elevator equipment of the present invention comprises elevator car (2), car side guide rail (6), emergency braking device (17), the lever member (11) that makes emergency braking device (17) action, detection elevator car ( 2) The speed governor (8) with abnormal speed and the speed governor sling (10) connected with the rod (11) are provided with a locking member (19) on the speed governor sling (10), and the Stopper (12), the stopper (12) is stored in a position that does not interfere with the locking piece (19) at ordinary times, and is set to a position that can be locked with the locking piece (19) during maintenance. When the stopper (12) is set to a position that can be locked with the stopper (19) and the elevator car (2) will drop to a position lower than the prescribed height, the stopper (19) and the stopper ( 12) Locking, forcibly actuating the emergency braking device (17), thereby stopping the elevator car (2).

Description

elevator equipment

technical field

The present invention relates to a safety device for elevator equipment capable of ensuring a safe space in a hoistway during maintenance.

Background technique

In the existing elevator equipment, as described in Patent Document 1, an elevator car descending prevention device is installed on the top of the car side buffer, by preventing the elevator car from descending beyond a specified position and no longer descending, it can ensure The safety space below the car.

prior art literature

patent documents

Patent Document 1: Japanese Patent Laid-Open No. 2003-155176

The problem to be solved by the invention

In the conventional elevator equipment described above, it is necessary to prepare a device for preventing the elevator car from descending for each type of car-side buffer, and it is necessary to use a length of Although it is considered that it is unlikely that it will be difficult to safely stop the movement of the elevator car with a device that prevents the elevator car from falling several meters, if it is not possible to safely stop the movement of the elevator car, there is concern that the maintenance personnel will be killed. There is a danger of being caught between the elevator car and the hoistway.

Contents of the invention

The present invention has been made in view of the above problems, and an object of the present invention is to provide an elevator apparatus that can safely prevent the movement of the elevator car and ensure a safe space for maintenance personnel entering the hoistway during maintenance .

solution

In order to achieve the above object, the elevator equipment of the present invention is equipped with: an elevator car that ascends and descends in the hoistway; a car side guide rail that guides the elevator car to go up and down; an emergency braking device that is arranged on the elevator car. On the car, stop the elevator car from descending by clamping the side guide rail of the car; a lever for actuating the emergency braking device; a governor for detecting abnormal speed of the elevator car; and a coil A governor sling wound on the governor and connected to the rod, the elevator equipment is characterized in that a locking member is provided on the governor sling, and the elevator The equipment is also provided with a stopper, which is usually stored in a position that does not interfere with the locking member, and is set to a position that can be locked with the locking member during maintenance. When the member is set to a position capable of locking with the locking member, when the elevator car is lowered to a position lower than the specified height, the locking member is locked with the stopper, The emergency braking device is forcibly activated to stop the elevator car.

In addition, the elevator equipment of the present invention includes: an elevator car that moves up and down in the hoistway; a car-side guide rail that guides the elevator car to go up and down; an emergency braking device that is installed on the elevator car , stop the elevator car from rising by clamping the side guide rail of the car; a rod member for actuating the emergency braking device; a governor for detecting abnormal speed of the elevator car; and winding on the The speed governor sling on the speed governor and connected with the rod, the elevator equipment is characterized in that a locking member is arranged on the speed governor sling, and the elevator equipment is also provided with There is a stopper, the stopper is usually stored in a position that does not interfere with the locking member, and is set to a position that can be locked with the locking member during maintenance, and when the stopper is set to In the case of a position that can be locked with the locking member, when the elevator car is raised to a position higher than a predetermined height, the locking member is locked with the stopper, forcibly The emergency braking device operates to stop the elevator car.

In addition, the elevator equipment of the present invention includes: an elevator car that moves up and down in the hoistway; a counterweight that moves up and down in a direction opposite to the elevator car; a main hoist that suspends the elevator car and the counterweight. cable; the counterweight side guide rail that guides the counterweight up and down; the emergency braking device, which is arranged on the counterweight, stops the descent of the counterweight by clamping the counterweight side guide rail; The rod for the operation of the emergency braking device; the governor for detecting the abnormal speed of the elevator car; and the governor sling wound on the governor and connected to the rod, the The elevator equipment is characterized in that a locking member is provided on the governor sling, and the elevator equipment is also provided with a stopper, and the stopper is usually stored in a position that is not locked with the said stopper. The position where the part interferes, and is set to a position that can be locked with the locking part during maintenance. When the stopper is set to a position that can be locked with the locking part, when the balance When it is lowered to a position lower than the predetermined height, the locking member is locked with the stopper, and the emergency braking device is forcibly activated to stop the counterweight.

In addition, the elevator equipment of the present invention includes: an elevator car that moves up and down in the hoistway; a counterweight that moves up and down in a direction opposite to the elevator car; a main hoist that suspends the elevator car and the counterweight. cable; the counterweight side guide rail that guides the counterweight up and down; the emergency braking device, which is arranged on the counterweight, stops the counterweight from rising by clamping the counterweight side guide rail; The rod for the operation of the emergency braking device; the governor for detecting the abnormal speed of the elevator car; and the governor sling wound on the governor and connected to the rod, the The elevator equipment is characterized in that a locking piece is provided on the governor sling, and the elevator equipment is also provided with a stopper, and the stopper is usually stored in a place that is not connected to the locking piece. Interference position, and set to a position that can be locked with the locking member during maintenance. When the stopper is set to a position that can be locked with the locking member, when the balance is important When raised to a position higher than a predetermined height, the locking member is engaged with the stopper, and the emergency braking device is forcibly activated to stop the counterweight.

Invention effect

According to the present invention, it is possible to provide an elevator apparatus capable of safely preventing the movement of the elevator car and ensuring a safe space for maintenance personnel entering the hoistway during maintenance.

Description of drawings

Fig. 1 is a perspective view showing an outline of an elevator system according to Embodiment 1 of the present invention.

Fig. 2 is an enlarged front view of main parts showing the installation state of the stopper of the elevator apparatus according to Embodiment 1 of the present invention.

[ Fig. 3] Fig. 3 is an enlarged front view of a main part showing the stored state of the stopper of the elevator apparatus according to Embodiment 1 of the present invention.

Fig. 4 is a front view showing an outline of a lock and a stopper on the car side of the elevator apparatus according to Embodiment 1 of the present invention.

Fig. 5 is a front view showing an outline of a lock and a stopper on the counterweight side of the elevator apparatus according to Embodiment 1 of the present invention.

FIG. 6 is a plan view of the stopper main body 12 a viewed from the direction of arrow A shown in FIG. 2 .

Detailed ways

Embodiments of the present invention will be described below with reference to the drawings.

Example 1

Fig. 1 is a perspective view showing the outline of an elevator system according to Embodiment 1 of the present invention. As shown in FIG. 1 , an elevator car 2 and a counterweight 3 are connected to each other by a main rope 5 in an elevator hoistway 1 . The main sling 5 is frictionally driven by the hoist 4, the elevator car 2 is guided by the car side guide rail 6, the counterweight 3 is guided by the counterweight side guide rail 7, and the elevator car 2 and the counterweight 3 move up and down in opposite directions.

The governor 8 shown in Figure 1 is used to monitor the speed of the elevator car 2, and the governor sling 10 between the governor 8 and the diverting pulley 9 of the governor is connected with the elevator car as a ring. The drawbar 11 of the operating lever of the emergency braking device is connected. The governor sling 10 rotates between the governor 8 and the steering pulley 9 of the governor as the elevator car 2 rises and falls. The upper pulley rotates, and the governor 8 monitors the speed of the elevator car 2 according to the rotation speed of the pulley. For example, when the descending speed of the elevator car 2 reaches an abnormal speed during the descent of the elevator car 2 , the governor 8 operates to restrict the rotation of the governor rope 10 . At this time, since the elevator car 2 is still descending, the drawbar 11 connected to the restricted governor sling 10 is relatively pulled upward, and the emergency braking device 17 (shown in FIG. 4 ) operates. After the emergency braking device 17 acted, the emergency braking device 17 arranged on the elevator car 2 clamped the car side guide rail 6, and the elevator car 2 was held on the car side guide rail 6 and stopped descending. It should be noted that the governor sling 10 is wound on the governor 8 and the steering pulley 9 of the governor, and the two ends of the governor sling 10 pass through the governor sling pressing part in the draw bar 11 connected in a ring.

In the present embodiment, a convex portion 19 which is a locking member having a diameter larger than that of the speed governor rope 10 is provided at a portion where the speed governor rope 10 is connected to the draw bar 11 serving as the connection portion of the speed governor rope 10 . . In addition, a stopper 12 is attached to the governor rope 10 at a predetermined position of the hoistway 1 .

Fig. 2 is an enlarged front view of main parts showing the installation state of the stopper of the elevator equipment according to Embodiment 1 of the present invention, and Fig. 3 shows main parts of the stored state of the stopper of the elevator equipment according to Embodiment 1 of the present invention magnified main view of . As shown in FIGS. 2 and 3 , the stopper 12 includes a plate-shaped stopper body 12 a , a base portion 12 b that rotatably supports the stopper body 12 a , and rotatably supports one end of the stopper body 12 a. The rotating part 12c is fixed on the base part 12b.

In this embodiment, the base portion 12b is fixed to the car-side guide rail 6 via a bracket. However, the present invention is not limited thereto, and the base portion 12b can also be directly fixed on the car side guide rail 6, or can be fixed directly or through brackets on the wall of the hoistway 1 or the counterweight side guide rail 7.

FIG. 6 is a plan view of the stopper main body 12 a viewed from the direction of arrow A shown in FIG. 2 . At the end of the rotating part 12c on the opposite side of the fixing part that fixes the stopper body 12a, that is, at the front end of the stopper body 12a, a C-shaped notch 20 is formed by cutting out a part of the circle. The opening 21 . The notch 20 provided on the opening 21 is provided with a width W slightly larger than the diameter D of the governor sling 10, and the governor sling 10 can be inserted into the opening 21 through the notch 20, and can also be inserted into the opening. 21 out of the governor sling 10 .

In addition, the size of the opening 21 provided at the front end of the stopper main body 12a is larger than the diameter D of the governor sling 10 and the governor sling pressing member that connects the governor sling in a ring shape, but is larger than the diameter of the convex portion. 19 has a small profile. Furthermore, in the present embodiment, a concave portion 22 for receiving the tip portion of the convex portion 19 is provided on the peripheral edge of the opening.

As shown in FIG. 3 , when the stopper 12 is in the storage state, the stopper main body 12 a is located at the storage position, and at this time, the stopper storage confirmation switch 14 is activated. When the stopper 12 is in the stored state, even if the elevator car is running, the convex portion 19 as the locking member does not interfere with the stopper 12 and does not hinder the running of the elevator car 2 .

In addition, as shown in FIG. 2, when the stopper 12 is set to the operating position, the stopper main body 12a in the stored state is rotated with the rotating shaft 12c as a fulcrum, and the speed governor sling 10 is lifted from the stopper. The notch part 20 of the main body 12a is inserted into the opening 21, and then the main body 12a of the stopper is rotated until it is kept on the base part 12b at a substantially horizontal position, thereby setting the stopper 12 into an action state, that is, setting to a position capable of interfering with the convex portion 19 . After the stopper 12 is set to the action state, the stopper action confirmation switch 13 is activated. Conversely, when the stopper 12 is returned from the operating state to the storage state, the stopper main body 12a in the operating state is rotated, and the speed governor sling 10 inside the opening 21 is released from the cutout portion 20 of the stopper main body 12a. It only needs to be moved to the outside, and then the stopper main body 12a is rotated to a substantially vertical position. After the stopper main body 12a is set to the storage position, the stopper storage confirmation switch 14 is actuated.

Here, when setting the stopper 12 to the storage state or the operating state, it may be done manually or automatically by using a mechanical device. In addition, remote operation may be performed from a remote location, or the stopper main body 12a may be directly actuated. As an example of remote operation, a rope such as a steel wire rope is installed on the front end of the stopper main body 12a, and after the rope passes through the diverting pulley on the upper side of the stopper, the rope is lowered until it can be operated. The rope is pulled downward, and the state is maintained to form a fixed state of the rope, whereby the stopper 12 can be maintained in the accommodated state. On the other hand, by releasing the cord, the stopper 12 can be set in an actuated state, and thus remote operation can be performed. When the installation position of the stopper is too high and it is difficult to work, by the above operation, the operability can be effectively improved. In addition, a mechanical device such as a solenoid may be used to switch between the operating state of the stopper 12 and the storage device through remote operation. In addition, when the mechanical operation is performed, a switching switch or the like for switching to maintenance work is provided in advance, and by switching the switch, the stopper is automatically switched to the operating state. By adopting this structure, the stopper can be switched to the active state before the operator performs maintenance work in the hoistway 1, thereby further improving safety.

Operations during normal operation and maintenance operation of this embodiment will be described below. The stopper 12 is in the accommodated state when the elevator equipment of this embodiment performs normal operation. During normal operation, if the stopper 12 interferes with the protrusion 19 as the locking member, it will cause a very large hindrance to the operation of the elevator equipment. Therefore, in the present embodiment, when the operation of the stopper storage confirmation switch 14 cannot be confirmed, a warning indicating that the operation of the stopper storage confirmation switch 14 cannot be confirmed is issued.

On the other hand, when performing maintenance work, for example, when the stopper 12 is automatically set to the operating position, by switching the elevator equipment to the maintenance mode, the elevator car 2 is automatically moved to the specified position and stopped. The stopper 12 is set to the action of the action position. After the stopper 12 is set to the action position, the stopper action confirmation switch 13 is actuated, whereby it can be confirmed that the stopper 12 is in the action state. When setting the stopper 12 to the operating state manually, the elevator equipment 2 is moved to a predetermined position in advance, and the stopper main body 12a is set to the operating state by remote operation or direct operation. It should be noted that, in the elevator equipment of this embodiment, the inspection table for maintenance installed in the hoistway is provided with an inspection table setting switch. When the inspection table setting switch is actuated, or whether the elevator car is The bottom floor and when the elevator door switch detects that the entrance and exit of the bottom floor are opened and acted, it is assumed that there are people below the elevator car, so by being set to only when the stopper action confirmation switch 13 is in the action state, the elevator car can be activated. The car is operated, so that the safety of the maintenance personnel under the elevator car can be guaranteed.

Moreover, in the state where the stopper 12 is set to the operating state, when the elevator car descends, the governor sling 10 can rest on the stopper until the convex portion 19 reaches the stopper 12 set at a predetermined position. The inside of the opening 21 of the elevator car 12 moves up and down, so the elevator car 2 can go up and down. On the other hand, as the elevator car further descends, when the convex portion 19 reaches the stopper 12 provided at a predetermined position, the convex portion 19 of the draw bar 11 fits into the concave portion 22 of the stopper 12, and the draw bar 11 Being towed, the emergency braking device is forcibly activated. After the emergency braking device 17 operates, the same as when the descending speed of the elevator car 2 reaches an abnormal speed, the emergency braking device 17 arranged on the elevator car 2 clamps the car side guide rail 6, and the elevator car 2 It is held on the car side guide rail 6 and stops descending.

4 is a front view showing a state when the elevator car is lowered and the draw bar 11 is pulled while the convex portion 19 is fitted into the concave portion 22 of the stopper 12 . In this case, the safety space 15 can be ensured under the elevator car 2 . In addition, since the elevator car 2 and the counterweight 3 are installed so as to be raised and lowered in directions opposite to each other by the main rope 5, a safety space can also be secured above the counterweight 3 by stopping the descent of the elevator car 2. .

Here, when considering the situation of performing work on an inspection platform installed near the floor surface of the lowest floor, the position where the stopper 12 interferes with the convex portion 19 is adjusted so that the installation height of the elevator car 2 on the inspection platform increases. Just stop at a position above the height of the master. According to this embodiment, since the attachment position of the stopper 12 can be freely set, a safety space can be easily ensured.

In addition, after the maintenance work is completed, by storing the stopper 12 in the storage position, it is possible to easily return to the state where normal operation is possible. It should be noted that, in the elevator equipment of this embodiment, if the stopper accommodation confirmation switch 14 is in the active state, and the reset switch arranged outside the hoistway is in the active state, the elevator can perform normal operation, so the maintenance can be further improved. The safety of personnel is ensured, and the elevator is prevented from entering normal operation in a state where the stopper 12 is set at the action position.

It should be noted that, in this embodiment, a convex portion as a locking member is provided on the connecting portion where the governor sling 10 is connected to the traction rod 11 of the emergency braking device 17 provided on the elevator car 2 . 19. By adopting this structure, when the stopper 12 is fitted to the convex portion 19, the operating force when the elevator car 2 moves is efficiently transmitted as the traction force of the drawbar, which is preferable.

In addition, if the position where the stopper 12 interferes with the convex portion 19 is adjusted, the convex portion 19 can be arranged at any position of the speed governor rope in principle. However, in this embodiment, when the elevator car 2 needs to When descending, the emergency braking device 17 that prevents the elevator car 2 from descending is used, so when the elevator car 2 is located at a height position where it is desired to prevent the elevator car 2 from further descending, the convex portion 19 is arranged on the governor 8 and the part between the traction rod 11 of the elevator car 2, and adjusted so that the protrusion 19 and the stopper 12 interfere at this position. In the state where the elevator car 2 is moving in the downward direction, if the convex portion 19 of the governor sling 10 is placed below the elevator car 2, even if the stopper 12 interferes with the convex portion 19, the traction rod will be driven. The driving force of 11, that is, the traction force, may also be absorbed by the slack of the governor sling 10 and the elastic force of the sling itself, thereby hindering the transmission of the traction force. However, by adopting the above-mentioned structure, when the rotation of the speed governor rope 10 is stopped due to the interference between the stopper 12 and the convex portion 19 , the traction force of the draw bar 11 can be efficiently transmitted to the draw bar 11 .

Furthermore, in this embodiment, as a device for preventing the elevator car 2 from rising further beyond a predetermined upper position, an emergency braking device 18 for stopping the descent of the counterweight 3 is provided on the counterweight. Although not shown in FIG. 1 , in this embodiment, a counterweight emergency braking device 18 having the same structure as the car emergency braking device 17 is provided on the counterweight 3 . In addition, the same governor 8 as the elevator car 2 , the deflection pulley 9 for the governor rope, and the governor rope 10 are installed on the counterweight 3 . The governor sling 10 is connected to the drawbar 11 of the counterweight emergency braking device 18 . The action of the emergency braking device 18 is the same as that of the emergency braking device 17 except that the emergency braking device clamps the counterweight side guide rail 7 . On the other hand, with respect to the governor sling 10 on the counterweight 3 side, the same stopper 12 as the stopper 12 provided on the elevator car 2 side is provided, and also the speed regulation on the counterweight 3 side A convex portion 19 as a locking member is provided on the device sling 10 .

Fig. 5 is a front view showing an outline of a counterweight-side locking member and a stopper of the elevator apparatus according to Embodiment 1 of the present invention. As shown in FIG. 5 , when the counterweight 3 is lowered to a predetermined position when the stopper 12 is at the operating position, the convex portion 19 provided at the connection portion with the drawbar 11 fits into the concave portion of the stopper 12 . Close, make the emergency braking device 18 action of counterweight. Thus, since the further descent of the counterweight 3 is restricted, the elevator cars 2 connected to each other by the main rope 5 can also stop rising, thereby ensuring a safety space 16 on the upper side of the elevator car 2. Ensure the safety of maintenance personnel on the elevator car. Of course, since the further descent of the balance weight 3 is restricted, it is also possible to avoid dangers such as contact between the balance weight and maintenance personnel.

It should be noted that, in this embodiment, when the setting switch arranged on the upper handrail of the car is activated, or whether the elevator car is on the floor or not, the elevator door of the elevator hall entrance is opened and the elevator door switch is activated. At the same time, it is assumed that there are people on the elevator car. Therefore, only when the stopper action confirmation switch 13 is in the action state, the elevator car can be operated by being set, thereby the safety of the maintenance personnel on the elevator car can be ensured.

It should be noted that, in this embodiment, a convex portion 19 as a locking member is provided on the connecting portion where the speed governor sling 10 is connected to the drawbar 11 of the emergency braking device 18 provided on the counterweight 3 . With this structure, similar to the elevator car 2 side, when the stopper 12 is fitted into the convex portion 19, the operating force when the counterweight 3 moves is efficiently transmitted as the traction force of the drawbar, so this is preferable. .

Like the elevator car 2, if the position where the stopper 12 interferes with the convex portion 19 is adjusted, the convex portion 19 can in principle be provided at any position of the speed governor rope, but in this embodiment, When the balance weight 3 is about to descend, the emergency braking device 18 that prevents the balance weight 3 from falling is used. Therefore, it is preferable to set the convex portion 19 at the adjustment position when the balance weight 3 is located at a height position where it is desired to prevent the balance weight 3 from further descending. The portion between the transmission 8 and the draw bar 11 of the counterweight 3 is adjusted so that the protrusion 19 and the stopper 12 interfere at this position. In the state where the balance weight 3 is moving in the downward direction, if the convex portion 19 of the governor sling 10 is placed below the balance weight 3, even if the stopper 12 interferes with the convex portion 19, the traction force of the traction rod 11 will be reduced. It may also be absorbed by the slack of the governor sling 10 and the elastic force of the sling itself, thereby hindering the transmission of the traction force. However, by adopting the above-mentioned structure, when the rotation of the speed governor rope 10 is stopped due to the interference between the stopper 12 and the convex portion 19 , the traction force of the draw bar 11 can be efficiently transmitted to the draw bar 11 .

Of course, like the car 2 side stopper, the counterweight side stopper can be manually or automatically switched between the operating state and the storage state.

In the above-mentioned elevator equipment, it is not necessary to set the device for preventing the elevator car from descending for each buffer as in the prior art, and the existing device for preventing the elevator car from descending acts on a load of several tonf, and the load used for Since the load for actuating the emergency braking device is about 100 kgf, the structure can be simplified and reduced in weight.

In the elevator equipment of the present embodiment, the convex part is provided at the connecting part where the elevator car side governor rope and the drawbar are connected, or when the elevator car 2 is at a height position where it is desired to prevent the elevator car 2 from further descending. Next, set the convex part on the part of the governor sling 10 between the speed governor 8 and the traction rod 11 of the elevator car 2, and make the above-mentioned convex part fit into the concave part of the stopper provided in the elevator passage , to forcibly activate the car emergency braking device to prevent the elevator car from descending, thereby ensuring a safe space under the elevator car. In addition, on the side of the counterweight and at the position of the stopper, the counterweight emergency braking device is forced to act to prevent the counterweight from falling. Since the elevator car and the counterweight are connected to each other by the main sling, it can also Cooperate to brake the elevator car, so as to ensure a safe space above the elevator car. Here, since the emergency braking device is activated to brake the elevator car, no problem will arise for persons in or on the elevator car.

Example 2

In the above-mentioned embodiment, the emergency braking device 17 for preventing the elevator car 2 from descending and the emergency braking device 18 for preventing the counterweight 3 from descending are used to prevent the elevator car 2 from rising above the specified position or falling to the specified position during maintenance. the following. On the other hand, as an emergency braking device, there is known an emergency braking device configured to sandwich the guide rails in both the ascending direction and the descending direction, and to hold the elevator car or the counterweight on the guide rails to stop them. .

The above-mentioned emergency braking device is provided on the elevator car 2, and is arranged so that the stopper 12 is set relative to the speed governor sling 10 at a predetermined position to prevent the elevator car 2 from further descending and a predetermined position to prevent the elevator car 2 from further rising. Interfering with the convex portion 19 can prevent the elevator car 2 from rising beyond the predetermined position and prevent the elevator car 2 from falling further beyond the predetermined position, thereby ensuring a safe space at the upper and lower parts of the elevator car 2 . This method can also be applied to a self-propelled elevator (self-propelled elevator) that does not use the counterweight 3 . Of course, if the elevator car 2 and the counterweight 3 are installed so as to be raised and lowered in opposite directions by the main rope 5, a safety space can also be secured above and below the counterweight 3.

In addition, by installing an emergency braking device on the counterweight 3 that can stop the counterweight in the ascending direction and in the descending direction, it is set at a predetermined position that prevents the counterweight 3 from further falling and a predetermined position that prevents the counterweight 3 from further rising. In the speed governor sling 10, the stopper 12 interferes with the convex portion 19 to prevent the counterweight 3 from rising beyond the specified position and prevent the counterweight 3 from falling further beyond the specified position, so that the elevator car 2 The upper and lower parts of the elevator equipment ensure a safe space. In addition, a safe space can be secured at the upper and lower parts of the counterweight 3 . This method is effective when the above-mentioned device cannot be installed on the elevator car 2 due to restrictions on the installation of elevator equipment or the like.

In addition, contrary to Embodiment 1, an emergency braking device that can stop the elevator car 2 and the counterweight 3 in the ascending direction is provided on the elevator car 2 and the counterweight 3, and is set at a specified position that prevents the elevator car 2 from rising further and prevents the balance The predetermined position where the weight 3 further rises makes the stopper 12 interfere with the convex portion 19 with respect to the speed governor sling 10, and a method that can prevent the elevator car 2 and the counterweight 3 from further rising beyond the predetermined position can be obtained, thereby enabling a The upper and lower parts of the elevator car 2 are elevator installations that secure a safe space. In addition, a safe space can be secured at the upper and lower parts of the counterweight 3 . This method is effective for cases where it is not possible to install an emergency braking device capable of stopping the elevator car 2 and the counterweight 3 in the descending direction due to installation restrictions or the like.

In addition, as a method of setting the stopper 12 to an operating position in each embodiment demonstrated above, the same structure as the structure demonstrated in Example 1 can be applied.

Similarly, if the position where the stopper 12 interferes with the convex portion 19 is adjusted, the convex portion 19 can be provided at any position of the governor rope in principle. In particular, by providing the convex portion 19 as a locking member on the connecting portion where the governor sling 10 is connected to the emergency braking device operating lever of the emergency braking device installed on the elevator car 2 or the counterweight 3 When the stopper 12 is engaged with the convex portion 19, the operating force when the elevator car 2 or the counterweight 3 moves can be efficiently transmitted as the traction force of the drawbar, so this is preferable. In addition, from the point of view of use, it also has the advantages of convenient installation and operation.

The reference signs are explained as follows:

1 Elevator

2 elevator cars

3 counterweight

4 hoist

5 main sling

6 car side guide rail

7 Balanced weight side rails

8 governor

9 Turning pulley for governor sling

10 governor sling

11 governor sling drawbar

12 Stops

13 Stopper action confirmation switch

14 Stopper storage confirmation switch

15 Safe space under the car

16 Safe space above the car

17 car emergency braking device

18 Balance weight emergency braking device

19 Convex part (locking part)

20 incision

21 openings

22 concave

Claims (5)

1. a lift facility, it possesses: the lift car be elevated in hoist trunk; Guide the cage side guide rail that described lift car is elevated; Emergency braking apparatus, this emergency braking apparatus is arranged on described lift car, makes described lift car stop declining by clamping described cage side guide rail; Make the rod member of described emergency braking apparatus action; Detect the governor of the abnormal speed of described lift car; And to be wound on described governor and the speed controller rope linked with described rod member,

The feature of described lift facility is,

Described lift facility is provided with: the stopper be made up of protuberance on described speed controller rope; Stop part, this stop part is being accommodated in the position of not interfering with described stopper at ordinary times, and is set to the position that can engage with described stopper when maintaining, and the position engaged with described stopper has the recess of the fore-end accepting described protuberance; And stop part confirming operation switch, this stop part confirming operation switch detects described stop part and whether has been set to the position that can engage with described stopper,

When maintaining, only having when described stop part confirming operation switch is in operating state, described lift car can be run,

When described stop part is set to the position that can engage with described stopper, when described lift car will drop to the position lower than the height of regulation, described stopper and described stop part engage, and make described emergency braking apparatus action forcibly, thus described lift car is stopped.

2. a lift facility, it possesses: the lift car be elevated in hoist trunk; Guide the cage side guide rail that described lift car is elevated; Emergency braking apparatus, this emergency braking apparatus is arranged on described lift car, makes described lift car stop rising by clamping described cage side guide rail; Make the rod member of described emergency braking apparatus action; Detect the governor of the abnormal speed of described lift car; And to be wound on described governor and the speed controller rope linked with described rod member,

The feature of described lift facility is,

Described lift facility is provided with: the stopper be made up of protuberance on described speed controller rope; Stop part, this stop part is being accommodated in the position of not interfering with described stopper at ordinary times, and is set to the position that can engage with described stopper when maintaining, and the position engaged with described stopper has the recess of the fore-end accepting described protuberance; And stop part confirming operation switch, this stop part confirming operation switch detects described stop part and whether has been set to the position that can engage with described stopper,

When maintaining, only having when described stop part confirming operation switch is in operating state, described lift car can be run,

When described stop part is set to the position that can engage with described stopper, when described lift car will rise to the position higher than the height of regulation, described stopper and described stop part engage, and make described emergency braking apparatus action forcibly, thus described lift car is stopped.

3. a lift facility, it possesses: the lift car be elevated in hoist trunk; The counterbalanced weight that the direction contrary with described lift car is elevated; Suspend the main hoist cable of described lift car and described counterbalanced weight in midair; Guide the counterbalanced weight side rails that described counterbalanced weight is elevated; Emergency braking apparatus, this emergency braking apparatus is arranged on described counterbalanced weight, makes described counterbalanced weight stop declining by clamping described counterbalanced weight side rails; Make the rod member of described emergency braking apparatus action; Detect the governor of the abnormal speed of described lift car; And to be wound on described governor and the speed controller rope linked with described rod member,

The feature of described lift facility is,

Described lift facility is provided with: the stopper be made up of protuberance on described speed controller rope; Stop part, this stop part is being accommodated in the position of not interfering with described stopper at ordinary times, and is set to the position that can engage with described stopper when maintaining, and the position engaged with described stopper has the recess of the fore-end accepting described protuberance; And stop part confirming operation switch, this stop part confirming operation switch detects described stop part and whether has been set to the position that can engage with described stopper,

When maintaining, only having when described stop part confirming operation switch is in operating state, described lift car can be run,

When described stop part is set to the position that can engage with described stopper, when described counterbalanced weight will drop to the position lower than the height of regulation, described stopper and described stop part engage, and make described emergency braking apparatus action forcibly, thus described counterbalanced weight is stopped.

4. a lift facility, it possesses: the lift car be elevated in hoist trunk; The counterbalanced weight that the direction contrary with described lift car is elevated; Suspend the main hoist cable of described lift car and described counterbalanced weight in midair; Guide the counterbalanced weight side rails that described counterbalanced weight is elevated; Emergency braking apparatus, this emergency braking apparatus is arranged on described counterbalanced weight, makes described counterbalanced weight stop rising by clamping described counterbalanced weight side rails; Make the rod member of described emergency braking apparatus action; Detect the governor of the abnormal speed of described lift car; And to be wound on described governor and the speed controller rope linked with described rod member,

The feature of described lift facility is,

Described lift facility is provided with: the stopper be made up of protuberance on described speed controller rope; Stop part, this stop part is being accommodated in the position of not interfering with described stopper at ordinary times, and is set to the position that can engage with described stopper when maintaining, and the position engaged with described stopper has the recess of the fore-end accepting described protuberance; And stop part confirming operation switch, this stop part confirming operation switch detects described stop part and whether has been set to the position that can engage with described stopper,

When maintaining, only having when described stop part confirming operation switch is in operating state, described lift car can be run,

When described stop part is set to the position that can engage with described stopper, when described counterbalanced weight will rise to the position higher than the height of regulation, described stopper and described stop part engage, and make described emergency braking apparatus action forcibly, thus described counterbalanced weight is stopped.

5. lift facility according to any one of claim 1 to 4, is characterized in that,

Described lift facility is provided with stop part storage and confirms switch, the storage of this stop part confirms that switch detects described stop part and whether has been incorporated on the position of not interfering with described stopper, when described stop part storage confirms that switch is in operating state and makes to be arranged on the switch motion outside described hoist trunk, described lift facility can normally run.