CN113548559B - Elevator device - Google Patents
Elevator device Download PDFInfo
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- CN113548559B CN113548559B CN202110388559.6A CN202110388559A CN113548559B CN 113548559 B CN113548559 B CN 113548559B CN 202110388559 A CN202110388559 A CN 202110388559A CN 113548559 B CN113548559 B CN 113548559B
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- protection net
- pit
- slit
- counterweight
- fixed
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/0043—Devices enhancing safety during maintenance
- B66B5/005—Safety of maintenance personnel
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- Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
- Maintenance And Inspection Apparatuses For Elevators (AREA)
Abstract
The invention aims to provide an elevator device capable of further improving the safety during maintenance and inspection of a buffer and the like arranged under a counterweight. The elevator device comprises: a car and a counterweight (3) which are connected to each other by a main rope in the hoistway and which are lifted and lowered in opposite directions in the hoistway; and a buffer (12) which is disposed below the counterweight (3) and is disposed in a pit (1 a) formed in the bottom of the hoistway. The elevator apparatus further includes a protection net (11) fixed to a protection net fixing part (pit base) (8) fixed to the pit (1 a). The lower end of the protection net (11) is placed on the protection net fixing part (8).
Description
Technical Field
The present invention relates to an elevator apparatus having a protection net for preventing an operator from entering a descending area of a counterweight.
Background
As background art belonging to the technical field of the present invention, an elevator apparatus described in japanese patent application laid-open No. 2013-95271 (patent document 1) is known. The elevator apparatus of patent document 1 includes: a folding maintenance platform which is arranged at the pit at the bottom of the lifting channel and expands when the equipment in the lifting channel is maintained and overhauled, and a protective net which prevents operators from entering the descending area of the balancing weight (refer to abstract).
Prior art literature
Patent literature
Patent document 1: japanese patent application laid-open No. 2013-95271
In the elevator apparatus of patent document 1, a gap exists between a pit at the bottom of a hoistway and the lower end of a protection net. A damper (shock absorber) is provided in the gap portion, and prevents the counterweight from descending. In this case, when the buffer and the like are inspected, an operator may possibly insert a tool or the like under the counterweight by drilling through the protection net, and the counterweight may possibly come into contact with the inserted tool or the like. Therefore, it is desired to further improve the safety during maintenance and inspection of the buffer and the like.
Disclosure of Invention
Problems to be solved by the invention
The invention aims to provide an elevator device capable of further improving the safety during maintenance and inspection of a buffer and the like arranged under a counterweight.
Means for solving the problems
In order to achieve the above object, an elevator apparatus of the present invention includes: a cage and a counterweight which are connected to each other by a main rope in a hoistway and which are lifted and lowered in opposite directions in the hoistway; and a buffer disposed in a pit formed at the bottom of the elevating channel and below the counterweight, wherein,
the elevator device is provided with a protective net fixed on a protective net fixing part fixed on a pit,
the lower end of the protective net is placed on the protective net fixing part.
Effects of the invention
According to the invention, the gap between the pit at the bottom of the lifting channel and the lower end of the counterweight can be reduced, and the safety during maintenance can be further improved.
Other problems, configurations and effects than those described above will be apparent from the following description of the embodiments.
Drawings
Fig. 1 is a diagram showing an outline structure of an elevator apparatus according to embodiment 1 of the present invention, and is a cross-sectional view showing a vertical cross section.
Fig. 2 is a diagram showing an outline structure of an elevator apparatus according to embodiment 1 of the present invention, and is a cross-sectional view showing a horizontal cross section.
Fig. 3 is a front view of the protection net of embodiment 1 of the present invention.
FIG. 4 is a plan view of a pit foundation on which the protection net of example 1 is installed.
Fig. 5 is a side view of fig. 3, which is a view showing a fixing structure of the protection net.
Fig. 6 is a front view showing the structure of a detection device that detects the installation of the protection net of embodiment 1, and is a diagram showing a state before the installation is completed.
Fig. 7 is a front view showing the structure of a detection device that detects the installation of the protection net of embodiment 1, and is a diagram showing a state after the installation is completed.
Fig. 8 is a front view of a protection net of embodiment 2 of the present invention.
Fig. 9 is a side view of fig. 8, showing a fixing structure of the protection net.
Fig. 10 is a front view of a protection net of embodiment 3 of the present invention.
Fig. 11 is a side view of fig. 10, which is a view showing a fixing structure of the protection net.
Fig. 12 is a front view of a protection net of embodiment 4 of the present invention.
Fig. 13 is a side view of fig. 12, showing a fixing structure of the protection net.
Reference numerals illustrate:
1a … lifting channel, 1a … pit, 2 … lift car, 3 … counterweight, 5 … main rope, 7 … hoist, 8 … pit base (Screen guard fixing part), 8A … wide slit (first slit), 8Aa … first slit 8A widening part, 8B … guard net 11 inserting part (second slit), 10 … guide rail, 11 … guard net, 12 … buffer, 13 … control part, 15 … detecting device, 18 … guard net, 22 … concrete block (control block) (guard net fixing part), 23 … bracket, 24 … anchor bolt, 100 … elevator device.
Detailed Description
An embodiment of an elevator apparatus according to the present invention will be described below with reference to the drawings. In the drawings, the same or similar structures are denoted by the same reference numerals, and overlapping description is omitted.
Example 1
An elevator apparatus 100 according to an embodiment of the present invention will be described below with reference to fig. 1 and 2. Fig. 1 is a diagram showing an outline structure of an elevator apparatus 100 according to embodiment 1 of the present invention, and is a cross-sectional view showing a vertical cross section. Fig. 2 is a diagram showing an outline structure of an elevator apparatus 100 according to embodiment 1 of the present invention, and is a cross-sectional view showing a horizontal cross section.
An elevator apparatus 100 according to an embodiment of the present invention is configured to be formed in a hoistway 1 formed in a building, and includes: a car 2 that is lifted and lowered in the lift shaft 1; a counterweight 3 that is lifted and lowered in a direction opposite to the car 2; a main rope 5 suspending the car 2 and the counterweight 3; a top pulley 6 which is disposed at the upper part of the elevating channel 1 and around which a main rope 5 is wound; a hoist 7 disposed near the bottom of the hoistway 1 and driving the main rope 5; and a control unit (control device) 13 for controlling the operation of the hoisting machine (driving unit) 7. Both ends of the main rope 5 are fixed to the upper part of the hoistway 1 via a stopper 4, and the car 2 and the counterweight 3 are suspended at the intermediate position of the stopper 4.
In the elevator apparatus 100, the pit base 8 is disposed in the pit 1a at the bottom of the hoistway 1, the hoist 7 is supported by the pit base 8, and the guide rail 9 on the car 2 side and the guide rail 10 on the counterweight 3 side are erected on the pit base 8. That is, pit base 8 is fixed to pit 1a, and forms a support portion (support member) for supporting hoist 7 and rails 9 and 10. The rails 9 and 10 are fixed to the hoistway 1 by rail brackets, not shown.
The present invention is not limited to the configuration of the elevator apparatus 100 shown in fig. 1, and may be an elevator apparatus having a different configuration.
The elevator apparatus 100 further includes a protection net 11 and a buffer 12. The protection net 11 suppresses the operator from entering the descent area (operation area) of the counterweight 3. The buffer 12 buffers the counterweight 3 that has been abnormally lowered for some reason.
The protection net 11 and the buffer 12 are supported by the pit base 8. That is, the pit foundation 8 is mounted with a protection net 11 and a buffer 12 in addition to the hoist 7 and the guide rails 9 and 10, and forms a supporting portion (supporting member, base) for supporting the hoist 7, the guide rails 9 and 10, the protection net 11, and the buffer 12. In particular, the pit base 8 fixes the lower end portion of the protection net 11, and thus may be referred to as a protection net fixing portion (protection net fixing member).
That is, the elevator apparatus 100 of the embodiment includes: a car 2 and a counterweight 3 connected to each other by a main rope 5 in a hoistway 1, and lifted and lowered in opposite directions in the hoistway 1; and a buffer 12 disposed in a pit 1a formed at the bottom of the elevating path 1 and below the counterweight 3. The elevator apparatus 100 further includes a protection net 11 fixed to a protection net fixing portion (pit base) 8, and the protection net fixing portion (pit base) 8 is fixed to the pit 1a. The lower end of the protection net 11 is placed on the protection net fixing part 8.
By placing the lower end portion of the protection net 11 on the protection net fixing portion 8, a gap in the up-down direction (vertical direction) is not formed between the lower end portion of the protection net 11 and the protection net fixing portion 8.
In embodiment 1, a pit base 8 is provided to be provided in a pit 1a to constitute a guard net fixing portion. The pit base 8 carries a guide rail 10 and a damper 12 for guiding the counterweight 3, and supports the guide rail 10 and the damper 12.
By forming the fixing portion of the protection net 11 from the pit base 8 as a conventional component, an increase in the number of components can be suppressed, the manufacturing cost of the elevator apparatus 100 can be reduced, and the installation space of the components can be narrowed.
An embodiment of the protection net 11 of the present invention will be described below.
The protection net 11 according to embodiment 1 of the present invention will be described in detail with reference to fig. 3, 4 and 5. Fig. 3 is a front view of the protection net 11 of embodiment 1 of the present invention. FIG. 4 is a plan view of a pit foundation on which the protection net of example 1 is installed.
Fig. 5 is a side view of fig. 3, which is a view showing a fixing structure of the protection net.
As shown in fig. 4, the pit base 8 has a wide slit 8A on its upper surface (upper portion) through which the guide rail 10 and the damper 12 protrude upward, and an insertion portion (narrow slit) 8B into which the protection net 11 is inserted. That is, the slit width of the insertion portion 8B is narrower than the slit width of the slit 8A. The wide slit 8A is provided with a widened portion 8Aa at a portion where the damper 12 protrudes. The insertion portion 8B is formed parallel to the slit 8A, and is connected to the slit 8A through the widened portion 8Aa in the widened portion 8Aa of the slit 8A.
That is, the pit base 8 has: a wide first slit 8A in which the guide rail 10 and the damper 12 protrude upward, and a second slit 8B in which the slit width is narrower than the first slit 8A, the second slit constituting an insertion portion of the protection net 11. The first slit 8A has a widened portion 8Aa at a portion where the damper 12 protrudes upward. The second slit 8B is connected to the first slit 8A via the widened portion 8Aa.
As shown in fig. 3 and 4, the lower end portion of the protection net 11 is inserted from the insertion portion (insertion port) 8B into the pit base 8, and is attached to the pit base 8.
As shown in fig. 5, for example, the protection net 11 is fixed to the pit base 8 by a protection net fixing member 14. In this case, the fixing portion fixed by the protection net fixing member 14 is located below the insertion portion 8B.
That is, in the elevator apparatus 100, the pit base 8 has an insertion portion 8B in which the protection net 11 is inserted in an upper portion. The protection net 11 is inserted into the pit base 8 through the insertion portion 8B, and is fixed to the pit base 8 at a position lower than the insertion portion 8B.
The protection net 11 is fixed to a side surface portion 8C of the pit base 8 on the car 2 side (the side opposite to the hoistway wall 1b side). In this case, the protection net 11 is held by the insertion portion 8B at a position parallel to the arrangement direction of the two guide rails 10 and away from the two guide rails 10.
In embodiment 1, the protection net fixing member 14 is formed of a fastener (bolt and nut).
A detection device 15 for detecting the attachment of the protection net 11 according to embodiment 1 of the present invention will be described with reference to fig. 6 and 7. Fig. 6 is a front view showing the structure of the detection device 15 that detects the installation of the protection net 11 of embodiment 1, and is a diagram showing a state before the installation is completed. Fig. 7 is a front view showing the structure of the detection device 15 that detects the installation of the protection net 11 of embodiment 1, and is a diagram showing a state after the installation is completed.
The elevator apparatus 100 has a detection device (installation detection device) 15 for detecting the installation of the protection network 11. The detection device 15 is fixed to the pit base 8. By attaching the protection net 11 to be in contact with the pit foundation 8, the detection device 15 is turned on, and the detection device 15 outputs an output signal to the control unit 13 that controls the driving unit (hoist) 7 of the elevator apparatus 100. The control unit 13 that receives the output signal of the detection device 15 allows the hoisting machine 7 to raise and lower the car 2.
The detection device 15 is constituted by a mechanical switch as shown in fig. 6 and 7, for example. The mechanical switch (detection device) 15 has a contact 15a that contacts the side edge portion of the protection net 11. A notch 11a is formed at a corner of the lower end portion of the protection net 11, and when the protection net 11 is inserted from the insertion portion 8B into the pit base 8, the contact 15a of the mechanical switch 15 is initially brought into contact with the notch 11 a. As the protection net 11 is inserted deeper into the pit base 8, the contact 15a moves along the cutout 11a toward the side edge portion of the protection net 11. At a position where the lower end of the protection net 11 contacts the bottom 8D of the pit base 8, the contact 15a of the mechanical switch 15 reaches the side edge of the protection net 11, and the mechanical switch 15 is turned on.
In embodiment 1, the lower end portion of the protection net 11 is inserted into the inside of the pit base 8, and the detection device 15 detects the position of the lower end portion of the protection net 11. Therefore, the detection device 15 is disposed inside the pit base 8. The detection means 15 is arranged inside the pit base 8 so as to be protected by the pit base 8.
The detection device 15 is not limited to a mechanical switch, and may be configured by a detection device other than a mechanical switch.
In example 1, during normal operation, the protection net 11 is fixed to the pit base 8, and the mechanical switch 15 is turned on, so that the car 2 is allowed to move up and down. Further, when the worker performs work in the pit, the lower end portion of the protection net 11 is free from play, so that the worker can be prevented from running under the protection net 11 or from inadvertently inserting a tool or the like under the counterweight by running under the protection net 11 and bringing the worker, the tool or the like into unintentional contact with the counterweight 3.
When the maintenance and inspection of the buffer 12 are performed, the protection net holder 14 is removed, and the protection net 11 is taken out of the pit base 8, whereby the maintenance and inspection of the buffer 12 are performed.
When the protection net 11 is removed from the pit base 8, the mechanical switch 15 is turned off, and the power supply of the elevator apparatus 100 is cut off by the control unit 13.
Specifically, the elevator apparatus 100 includes: a hoist 7 for applying a driving force to the main rope 5, a control unit 13 for controlling the operation of the hoist 7, and a detection device 15 for detecting the attachment state of the protection net 11 to the protection net fixing unit (pit base) 8. The control unit 13 controls the operation of the hoist 7 based on a signal from the detection device 15, and stops the operation of the hoist 7 when the detection device 15 detects a non-mounted state (i.e., a non-mounted state) of the protection net 11 with respect to the protection net fixing unit 8.
This makes it possible to prevent an accident of contact between an operator, a tool, or the like and the counterweight 3 by lowering the counterweight 3 due to an abnormal operation, and to further improve safety during maintenance. In this way, during maintenance and inspection, the worker performs maintenance and inspection of the buffer 12 in a state where the protection net 11 is removed and the power supply of the elevator apparatus 100 is turned off.
According to the present embodiment, the protection net 11 is attached in contact with the pit base 8, and thus the height adjustment of the protection net 8 is not required, and the attachment workability can be improved.
Further, since the protection net 11 is inserted into and fixed to the pit base 8, even in the arrangement of the hoistway 1 in which the gap between the car 2 and the counterweight 3 is narrow as shown in fig. 2, interference between the protection net 11 and the car 2 during normal operation can be prevented by the structure of the pit base 8 provided in the past.
Example 2
Next, another embodiment (embodiment 2) of the protection net 11 according to the present invention will be described with reference to fig. 8 and 9. Fig. 8 is a front view of the protection net 11 of embodiment 2 of the present invention. Fig. 9 is a side view of fig. 8, which is a view showing a fixing structure of the protection net 11.
When the moving distance of the car 2 and the counterweight 3 in the lifting direction is long, the length of the main rope 5 connecting the car 2 and the counterweight 3 from the hoist 7 to the car 2 varies depending on the position of the car 2. In this case, the difference between the weight of the main rope 5 applied to the car 2 side of the hoist 7 and the weight of the counterweight 3 side increases due to the weight of the main rope 5 itself. In order to reduce this difference in weight, a compensating member 16 is provided.
In example 2, a point of change from example 1 is that a configuration that avoids interference between the compensating member 16 and the protection net 11 is adopted in order to correspond to the elevator apparatus 100 provided with the compensating member 16. As this modification point, as shown in fig. 8, a hole 11b for passing through the compensation member 16 connecting the car 2 and the counterweight 3 and a compensation member guide rod 17 for guiding the compensation member 16 are provided in the protection net 11.
The other structures are basically the same as those of embodiment 1, and the same operational effects as those of embodiment 1 can be obtained in embodiment 2.
In the elevator apparatus 100 of example 2, as shown in fig. 9, in addition to the operation and effect obtained in example 1, interference between the compensation member 16 and the protection net 11 can be avoided. In embodiment 2, the hole 11b through which the compensation member 16 passes is opened, but the hole 11b is small, and entry of the operator is suppressed. Further, since the compensation member 16 is provided in the hole 11b, the operation of the operator who inserts a tool or the like into the hole 11b can be suppressed. As described above, the protection net 11 of example 2 also has a structure for preventing an operator, a tool, or the like from entering the descent area of the counterweight 3.
Example 3
Next, another embodiment (embodiment 3) of the protection net 11 of the present invention will be described with reference to fig. 10 and 11. Fig. 10 is a front view of a protection net of embodiment 3 of the present invention. Fig. 11 is a side view of fig. 10, which is a view showing a fixing structure of the protection net.
Conventionally, the lowest height from the pit 1a to the upper end of the protection net 11 is sometimes specified. In example 3, the modification point when compared with example 1 is that the additional protection net 18 is added and the height of the protection net 11 is increased. The other structures are basically the same as those of embodiment 1, and in embodiment 2, the same operational effects as those of embodiment 1 can be obtained. Embodiment 3 can be applied to the structure of embodiment 2.
The protection net 11 is fixed to the additional protection net 18 by, for example, an additional protection net fixing member 19, and the additional protection net 18 is fixed by a bracket 20 and a bracket fixing member 21 fixed to the counterweight-side rail 10. The additional protection net fixing member 19 is formed of a fastener (bolt and nut), and the bracket fixing member 21 is also formed of a fastener (bolt and nut).
In example 3, the additional protection net 18 is added to the protection net 11, but if the structure is changed, one protection net 11, 18 is constituted by the protection net 11 and the protection net 18, and the structure corresponds to a structure in which one protection net 11, 18 is divided into the first protection net 11 and the second protection net (additional protection net) 18.
In embodiment 3, the protection nets 11 and 18 are fixed to the guide rail 10 via brackets 20 fixed to the guide rail 10 at positions above the protection net fixing portions (pit bases) 8. In example 1 in which the protection net is composed only of the protection net 11, the fixing structure of the protection nets 11, 18 using the bracket 20 and the bracket fixing member 21 can be applied to fixing the upper portion of the protection net 11 to the guide rail 10.
The first protection net 11 is a protection net member disposed on the lower side, and thus may be referred to as a lower protection net member. The second protection net 18 is a protection net member disposed on the upper side, and is therefore sometimes referred to as an upper protection net member.
In addition to the effects obtained in example 1, the protection nets 11 and 18 of example 3 have a structure in which the height of the protection net 11 is increased to suppress the entry of the worker into the descending area of the counterweight 3, as shown in fig. 10 and 11. Further, since the additional protection net 18 is added to the protection net 11, the protection net 11 can be used as a common member between a plurality of models, and the manufacturing cost of the elevator apparatus 100 can be reduced.
Example 4
Next, another embodiment (embodiment 4) of the protection net 11 according to the present invention will be described with reference to fig. 12 and 13. Fig. 12 is a front view of a protection net of embodiment 4 of the present invention. Fig. 13 is a side view of fig. 12, showing a fixing structure of the protection net.
In the elevator apparatus 100 in which the pit base 8 is not provided, for example, as shown in fig. 12, concrete blocks 22 are fixed to the pit 1a, and are provided for the purpose of supporting the guide rail 10, the fixed damper 12, and the like. The concrete block 22 forms a support portion (support member) for supporting the rail 10 and the damper 12.
In example 4, an elevator apparatus 100 provided with concrete blocks 22 was used instead of the pit base 8. Therefore, a modification point when compared with the embodiment 1 is that the protection net 11 is fixed to the concrete block 22 by the bracket 23. In embodiment 4, the protection net 11 is supported by the concrete block 22 in addition to the guide rail 10 and the damper 12. That is, the concrete block 22 is mounted with the rail 10, the damper 12, and the protection net 11, and forms a supporting portion (supporting member, base) for supporting the rail 10, the damper 12, and the protection net 11. In particular, the lower end portion of the protection net 11 is fixed, and thus the concrete block 22 can be referred to as a protection net fixing portion (protection net fixing member).
The other structures are basically the same as those of embodiment 1, and the same operational effects as those of embodiment 1 can be obtained in embodiment 4 as well for the same structural parts as those of embodiment 1. The modifications in embodiment 2 and embodiment 3 can be applied to embodiment 4.
As shown in fig. 12, in order to fix the protection net 11 to the concrete block 22, a bracket 23 is provided. Anchor bolts 24 are fixed to the concrete block 22. Brackets 23 are secured to concrete blocks 22 by anchor bolts 24. As shown in fig. 13, the protection net 11 is fixed to the bracket 23 by the protection net fixing members 14 described in embodiment 1.
That is, in example 4, the concrete block 22 that constitutes the protection net fixing portion and is fixed to the pit 1a is provided. The protection net 11 is fixed to anchor bolts 24 of the concrete block 22 via brackets 23.
The detection device (mechanical switch) 15 described in embodiment 1 is fixed to the bracket 23.
In the elevator apparatus 100 according to embodiment 4, since the lower end portion of the protection net 11 is in contact with the concrete block 22 and there is no gap at the lower end portion of the protection net 11, there is no fear that an operator may go through under the protection net 11 to perform work or may go through under the protection net 11 to insert a tool or the like under the counterweight carelessly, and the safety at the time of maintenance and inspection can be further improved.
Further, the fixing position of the bracket 23 with respect to the concrete block 22 can be adjusted by using the bracket 23, for example, as shown in fig. 2, and even in the hoistway arrangement in which the gap between the car 2 and the counterweight 3 is narrow, interference between the protection net 11 and the car 2 during normal operation can be prevented.
In example 4, the same applies to the structure in which the bracket 23 is directly fixed to the pit 1a without providing the concrete block 22. In this case, the anchor bolts 24 are provided in the pit 1a and fixed to the pit 1a. That is, the protection net 11 is fixed to the anchor bolts 24 fixed to the pit 1a via brackets 23. In this structure, there is no need to provide a protection net fixing portion such as the pit base 8 and the concrete block 22, and the number of components can be reduced.
The supporting portion (supporting member, base) for placing the rail 10, the damper 12, and the protection net 11 and supporting the rail 10, the damper 12, and the protection net 11 is constituted by the pit 1a. The pit 1a constitutes a protection net fixing portion (protection net fixing member) that fixes the lower end portion of the protection net 11. In this case, the protection net 11 is fixed to the pit 1a so that the lower end portion thereof contacts the pit 1a as the protection net fixing portion.
The height adjustment of the protection net 11 in this embodiment can be performed by combining the structure (mode) of the modification point in embodiment 3. In this case, the same effects as those of example 3 can be obtained.
The present invention is not limited to the above-described embodiments, but includes various modifications. For example, the above-described embodiments are described in detail for the purpose of easily understanding the present invention, and are not necessarily limited to the entire configuration. In addition, a part of the structure of one embodiment may be replaced with the structure of another embodiment, and the structure of another embodiment may be added to the structure of one embodiment. In addition, other structures may be added, deleted, or replaced to a part of the structures of the embodiments.
Claims (4)
1. An elevator apparatus, comprising: a cage and a counterweight which are connected to each other by a main rope in a hoistway and which are lifted and lowered in opposite directions in the hoistway; and a buffer disposed in a pit formed at the bottom of the elevating passage and below the counterweight, characterized in that,
the elevator device comprises a protection net fixed on a protection net fixing part fixed at a pit, wherein the lower end part of the protection net is arranged on the protection net fixing part,
the elevator device comprises a pit base which is arranged at the pit and forms a protective net fixing part,
the pit base is provided with the buffer and a guide rail for guiding the counterweight, and supports the guide rail and the buffer,
the bottom pit base is provided with an inserting part for inserting the protective net at the upper part,
the protection net is inserted into the inner side of the pit base through the insertion part and fixed on the pit base at a position below the insertion part,
the pit base has: a first slit having a wide width and protruding upward from the guide rail and the damper, and a second slit having a narrower slit width than the first slit and constituting an insertion portion of the protection net,
the first slit has a widened portion at a portion where the bumper protrudes upward,
the second slit is connected to the first slit via the widened portion.
2. Elevator arrangement according to claim 1, characterized in that,
the elevator device comprises: a hoist that applies a driving force to the main rope; a control unit that controls the operation of the hoisting machine; and a detection device for detecting the installation state of the protection net relative to the protection net fixing part,
the control unit controls the operation of the hoist based on a signal from the detection unit, and stops the operation of the hoist when the detection unit detects a non-mounted state of the protection net with respect to the protection net fixing unit.
3. Elevator arrangement according to claim 1, characterized in that,
the protection net is fixed to the guide rail via a bracket fixed to the guide rail at a position above the protection net fixing portion.
4. Elevator arrangement according to claim 2, characterized in that,
the detection device is arranged on the inner side of the pit base.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2020-077422 | 2020-04-24 | ||
| JP2020077422A JP2021172487A (en) | 2020-04-24 | 2020-04-24 | Elevator device |
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| Publication Number | Publication Date |
|---|---|
| CN113548559A CN113548559A (en) | 2021-10-26 |
| CN113548559B true CN113548559B (en) | 2023-07-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110388559.6A Active CN113548559B (en) | 2020-04-24 | 2021-04-12 | Elevator device |
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| JP (1) | JP2021172487A (en) |
| CN (1) | CN113548559B (en) |
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| CN114634084B (en) * | 2022-03-24 | 2024-07-09 | 森赫电梯股份有限公司 | Side is to heavy pit guardrail device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006036405A (en) * | 2004-07-23 | 2006-02-09 | Hitachi Ltd | Elevator device |
| JP2009155077A (en) * | 2007-12-27 | 2009-07-16 | Mitsubishi Electric Corp | Pit ladder device of elevator |
| JP5805499B2 (en) * | 2011-11-02 | 2015-11-04 | 株式会社日立製作所 | Elevator equipment |
| JP5767573B2 (en) * | 2011-11-24 | 2015-08-19 | 株式会社日立製作所 | Elevator maintenance equipment |
| CN107032210B (en) * | 2015-07-13 | 2020-12-01 | 奥的斯电梯公司 | Elevator system muffler assembly and method |
| JP6496231B2 (en) * | 2015-10-15 | 2019-04-03 | 株式会社日立製作所 | Elevator equipment |
| JP2017100845A (en) * | 2015-12-01 | 2017-06-08 | 東芝エレベータ株式会社 | Method for entering and exiting from elevator pit |
| CN207061584U (en) * | 2017-08-28 | 2018-03-02 | 湖州高恒电梯配件有限公司 | A kind of multiaspect counterweight guard of high intensity |
| JP6881228B2 (en) * | 2017-10-23 | 2021-06-02 | 三菱電機ビルテクノサービス株式会社 | Work safety device in the pit of the elevator |
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| CN113548559A (en) | 2021-10-26 |
| JP2021172487A (en) | 2021-11-01 |
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