JP2024081054A - Elevator landing detection plate positioning jig, landing detection device, and landing detection plate positioning method - Google Patents

Abstract

[Problem] To provide a positioning jig for an elevator floor-landing detection plate that can reduce the number of steps required for positioning the floor-landing detection plate. [Solution] The positioning jig for the floor-landing detection plate according to the embodiment includes a guide bracket fixed to a support that supports a floor-landing switch that is the detection target of the floor-landing detection plate, a block placed on the upper surface of the guide bracket and movable in a moving direction perpendicular to the main surface of the floor-landing detection plate while being guided by the guide bracket, and a fitting hole provided in the floor-landing detection plate. The block includes a fitting protrusion that protrudes from the surface on the side of the floor-landing detection plate and that can fit into the fitting hole. [Selected Figure] Figure 2

Description

The present invention relates to an elevator floor detection plate positioning tool, a floor detection device, and a floor detection plate positioning method.

A floor-landing detection device is known that detects when an elevator car has landed at a landing. The floor-landing detection device includes a floor-landing detection plate installed at each stopping floor in the elevator shaft, and a floor-landing switch attached to the car. While the car is ascending or descending, the floor-landing switch detects the floor-landing detection plate, thereby identifying the position of the car. A control panel controls the operation of the car based on this position of the car.

A commonly known floor landing switch has a structure that includes a light-emitting section and a light-receiving section. When the floor landing detection plate blocks the light emitted from the light-emitting section of the floor landing switch toward the light-receiving section while the elevator car is rising or falling, the floor landing switch switches ON/OFF. In this way, it is possible to detect when the elevator car has landed on the floor.

The floor-landing detection plate is positioned at a predetermined location to improve the accuracy of car detection. When positioning, the car is first positioned at the desired position relative to the floor-landing detection plate, and the floor-landing detection plate is positioned. In this state, the presence of structures such as floor-landing switches makes it impossible to tighten the bolts to secure the floor-landing detection plate. For this reason, the car is moved and the bolts are tightened. The car is then returned to its original position and the position of the floor-landing detection plate is confirmed. This has led to the problem of a large number of steps being required to position the floor-landing detection plate. Furthermore, because a floor-landing detection plate is installed at each stopping floor, a large number of steps are required to position all of the floor-landing detection plates.

JP 2008-179459 A Japanese Utility Model Application Publication No. 61-6237

The embodiment aims to provide an elevator landing detection plate positioning tool, a landing detection device, and a landing detection plate positioning method that can reduce the amount of work involved in positioning the landing detection plate.

The elevator landing detection plate positioning jig according to the embodiment is a jig for positioning the landing detection plate fixed to the elevator car guide rail via a hoistway bracket. The landing detection plate positioning jig includes a guide bracket fixed to a support that supports a floor switch that detects the landing detection plate, a block placed on the upper surface of the guide bracket and movable in a moving direction perpendicular to the main surface of the landing detection plate while being guided by the guide bracket, and a fitting hole provided in the landing detection plate. The block includes a fitting protrusion that protrudes from the surface on the side of the landing detection plate and can be fitted into the fitting hole.

The elevator floor-landing detection device according to the embodiment includes a floor-landing detection plate fixed to the elevator car guide rail via a hoistway bracket, a floor-landing switch provided on the car and used to detect the floor-landing detection plate, a support for supporting the floor-landing switch, and the elevator floor-landing detection plate positioning tool described above for positioning the floor-landing detection plate.

The method for positioning the floor-landing detection plate of an elevator according to the embodiment is a method for positioning the floor-landing detection plate fixed to the elevator car guide rail via a hoistway bracket. The method for positioning the floor-landing detection plate includes the steps of temporarily fixing the floor-landing detection plate to the guide rail via the hoistway bracket, fixing the guide bracket to a support that supports a floor-landing switch that is the detection target of the floor-landing detection plate and placing a block including a fitting protrusion on the upper surface of the guide bracket, advancing the block to the floor-landing detection plate and fitting the fitting protrusion into a fitting hole provided in the floor-landing detection plate, fixing the floor-landing detection plate to the hoistway bracket with the fitting protrusion fitted into the fitting hole, and retracting the block from the floor-landing detection plate.

FIG. 1 is a diagram showing a schematic configuration of an elevator system according to this embodiment. FIG. 2 is a perspective view showing an elevator landing detection plate positioning jig according to this embodiment. FIG. 3 is a perspective view seen in the direction A of FIG. FIG. 4 is a plan sectional view showing the block of FIG. FIG. 5 is a perspective view showing the landing detection plate of FIG. FIG. 6 is an enlarged perspective view showing the block with the landing detection plate and hoistway bracket of FIG. 3 removed. FIG. 7 shows a modification of the block of FIG.

The elevator landing detection plate positioning jig, the landing detection device, and the landing detection plate positioning method according to an embodiment of the present invention will be described below with reference to the drawings. First, the elevator device according to this embodiment will be described.

As shown in FIG. 1, the elevator device 1 includes a car 3 and a counterweight 4 disposed in a hoistway 2. The car 3 and the counterweight 4 are connected via a main rope 5. The main rope 5 is wound around a traction sheave provided on a hoisting machine 6. The hoisting machine 6 winds up the main rope 5, causing the car 3 and the counterweight 4 to rise and fall. The car 3 rises and falls while being guided by a car guide rail 7 extending in the vertical direction D1. The counterweight 4 rises and falls while being guided by a counterweight guide rail 8 extending in the vertical direction D1.

The main rope 5 is also wound around the deflector sheave 9. The hoisting machine 6 is installed in a machine room 10 provided above the hoistway 2. A control panel 11 is installed in the machine room 10. The control panel 11 is a device that controls the entire elevator system 1 including the hoisting machine 6. For example, the control panel 11 controls the operation of the hoisting machine 6 in response to hall calls and car calls, and lands the car 3 at the hall 12 of the floor for which the call has been registered.

The elevator system 1 is not limited to the form shown in FIG. 1. For example, it may be a so-called machine room-less elevator system. That is, the machine room 10 may not be provided, and the hoist 6 and control panel 11 may be provided at the top of the elevator shaft 2, etc. Also, the counterweight 4 may not be connected to the main rope 5, and the hoist 6 may wind up or pay out the main rope 5 connected to the car 3. Even in this case, the hoist 6 can raise and lower the car 3 via the main rope 5. That is, the elevator system 1 may be an elevator system that does not have a counterweight 4.

Next, the elevator landing detection device 20 according to this embodiment will be described with reference to Figures 2 to 5.

As shown in FIG. 2, the landing detection device 20 includes a landing detection plate 21, a landing switch 22, a support 23, and a landing detection plate positioning jig 30.

The floor landing detection plate 21 is installed at each stopping floor in the elevator shaft 2. The floor landing detection plate 21 is attached to the car guide rail 7 via an elevator shaft bracket 24. The elevator shaft bracket 24 is a plate-shaped member extending from the car guide rail 7 in the horizontal direction D3.

The floor landing detection plate 21 is a plate-shaped member extending in the vertical direction D1. The floor landing detection plate 21 includes a first surface 21a (main surface) located on the side of the floor landing switch 22, and a second surface 21b located on the opposite side to the first surface 21a. The hoistway bracket 24 abuts against the second surface 21b. The floor landing detection plate 21 is attached to the surface of the hoistway bracket 24 on the floor landing switch 22 side.

As shown in Figures 3 and 4, the floor-landing detection plate 21 is fixed to the hoistway bracket 24 using multiple (here, two) fastening bolts 25 and fastening nuts 26. The head of the fastening bolt 25 abuts against the first surface 21a of the floor-landing detection plate 21. The fastening nut 26 abuts against the surface of the hoistway bracket 24 opposite the floor-landing detection plate 21.

As shown in Figures 4 and 5, the landing detection plate 21 has a detection plate bolt hole 27 through which the fastening bolt 25 passes. As shown in Figure 5, the detection plate bolt hole 27 is formed as an elongated hole extending in the vertical direction D1. As shown in Figure 4, the hoistway bracket 24 has a bracket bolt hole 28 through which the fastening bolt 25 passes. This bracket bolt hole 28 may be formed in a circular shape.

As shown in Figures 2 to 4, the floor landing detection plate 21 according to this embodiment is formed by bending a plate-like member into a U-shape when viewed from above. In other words, a pair of detection targets 21c are formed that protrude from both edges of the first surface 21a toward the floor landing switch 22.

As shown in FIG. 2, the floor landing switch 22 is provided in the car 3. The car 3 may be provided with multiple floor landing switches 22. In the example shown in FIG. 2, three floor landing switches 22 that detect one of the detectable portions 21c of the floor landing detection plate 21 are arranged to face that detectable portion 21c. These three floor landing switches 22 are arranged at a predetermined interval in the vertical direction D1. One floor landing switch 22 that detects the detectable portion 21c is arranged to face the other detectable portion 21c.

The support 23 is fixed to the car frame 3a of the car 3 via a car bracket 29. The support 23 supports a number of floor landing switches 22. The support 23 is positioned so as to cross the floor landing detection plate 21.

Next, the floor-landing detection plate positioning jig 30 according to this embodiment will be described with reference to Figures 2 to 6. The floor-landing detection plate positioning jig 30 is a jig for positioning the floor-landing detection plate 21, which is fixed to the elevator car guide rail 7 via the elevator shaft bracket 24.

As shown in FIG. 2, the landing detection plate positioning jig 30 includes a guide bracket 40, a block 50, and a fitting hole 60.

The guide bracket 40 is fixed to the support 23 described above. The guide bracket 40 is formed into an L-shape by bending a plate-like member. The guide bracket 40 includes a vertical plate portion 41 extending in the up-down direction D1 and a horizontal plate portion 42 extending in the movement direction D2 of the block 50 described later. The movement direction D2 is perpendicular to the up-down direction D1. The vertical plate portion 41 abuts against the surface of the support 23 opposite the floor landing switch 22 and is bolted. The horizontal plate portion 42 extends from the upper end of the vertical plate portion 41 toward the floor landing detection plate 21. The horizontal plate portion 42 does not reach the floor landing detection plate 21 and is spaced apart from the floor landing detection plate 21. The horizontal plate portion 42 is disposed between the two detection target portions 21c of the floor landing detection plate 21 and is also spaced apart from each detection target portion 21c.

A guide protrusion 43 is provided on the upper surface of the horizontal plate portion 42 of the guide bracket 40, extending in the movement direction D2 of the block 50 described below. The guide protrusion 43 extends perpendicular to the first surface 21a of the landing detection plate 21. The cross-sectional shape of the guide protrusion 43 may be rectangular, arc-shaped, or home plate-shaped, and is arbitrary.

The block 50 is placed on the upper surface of the guide bracket 40. The block 50 is movable in a movement direction D2 perpendicular to the first surface 21a of the floor landing detection plate 21 while being guided by the guide bracket 40. The block 50 is capable of moving forward and backward relative to the floor landing detection plate 21. The rear surface 50a of the block 50 is not covered by structures such as the floor landing switch 22. The rear surface 50a is the surface opposite to the opposing surface 50b described below.

The movement of the block 50 is guided by the guide protrusion 43. A guide recess 51 that fits into the guide protrusion 43 is formed on the underside of the block 50. The guide recess 51 extends in the movement direction D2 of the block 50. The guide recess 51 extends in the movement direction D2 from the rear surface 50a of the block 50 to the opposing surface 50b, penetrating the block 50 in the movement direction D2.

As shown in FIG. 4, the dimension of the block 50 in the horizontal direction D3 is smaller than the dimension of the horizontal direction D3 between a pair of the detection target portions 21c. The block 50 is spaced apart from each of the detection target portions 21c. The block 50 may generally be formed in a rectangular parallelepiped or cubic shape. The horizontal direction D3 is perpendicular to the up-down direction D1 and the movement direction D2.

2 and 6, the block 50 includes an engagement protrusion 52 that protrudes from the opposing surface 50b toward the landing detection plate 21, which will be described later. The engagement protrusion 52 is capable of engaging with an engagement hole 60 provided in the landing detection plate 21. The engagement protrusion 52 is tapered toward the tip. The engagement protrusion 52 is capable of penetrating the engagement hole 60 and protruding to the opposite side of the landing detection plate 21. The cross-sectional shape of the engagement protrusion 52 is rectangular. The engagement protrusion 52 is disposed on the upper surface of the block 50. That is, the engagement protrusion 52 extends from the upper surface of the block 50 toward the landing detection plate 21. The engagement protrusion 52 is disposed above the insertion groove 53, which will be described later.

4 and 6, the block 50 includes an opposing surface 50b located on the side of the floor-landing detection plate 21. The opposing surface 50b is provided with a plurality of insertion grooves 53. The insertion grooves 53 are adapted to receive fastening parts for fastening the floor-landing detection plate 21 and the hoistway bracket 24. In this embodiment, the head of the fastening bolt 25 described above as an example of a fastening part is inserted into the insertion groove 53. The insertion groove 53 may be adapted to receive a fastening part in order to prevent the fastening bolt 25 from rotating. The insertion groove 53 has a width (dimension in the horizontal direction D3) that allows the head of the fastening bolt 25 to be fitted therein. When the fastening bolt 25 is a hexagonal bolt, the insertion groove 53 may be formed with a width equivalent to the two-face width of the head. When the fastening nut 26, rather than the head of the fastening bolt 25, is in contact with the first surface 21a of the floor-landing detection plate 21, the fastening nut 26 may be inserted into the insertion groove 53. In this case, the insertion groove 53 may have a width that allows the fastening nut 26 to fit into it.

The insertion groove 53 extends in the vertical direction D1 from the bottom surface of the block 50 to the top surface of the block 50. In other words, the insertion groove 53 penetrates the block 50 in the vertical direction D1.

As shown in FIG. 5, the fitting hole 60 is provided in the floor landing detection plate 21. The fitting hole 60 is located above the elevator shaft bracket 24 and above the detection plate bolt hole 27. The fitting hole 60 is formed in a shape similar to the cross-sectional shape of the fitting protrusion 52. In this embodiment, the fitting hole 60 is formed in a rectangular shape, similar to the fitting protrusion 52.

Next, we will explain the elevator landing detection plate positioning method according to this embodiment.

First, the floor-landing detection plate 21 is temporarily fixed to the car guide rail 7 via the hoistway bracket 24. At this time, the fastening bolt 25 and fastening nut 26 are loosely fastened so that the position of the floor-landing detection plate 21 can be adjusted relative to the hoistway bracket 24 in a later process.

The guide bracket 40 is fixed to the support 23 that supports the floor landing switch 22, and the block 50 is placed on the upper surface of the guide bracket 40. At this time, the guide protrusion 43 formed on the upper surface of the guide bracket 40 fits into the guide recess 51 formed on the lower surface of the block 50.

The car 3 is positioned at the desired position relative to the target floor detection plate 21. This causes the mating protrusion 52 of the block 50 to face the mating hole 60 provided in the floor detection plate 21.

The block 50 is advanced in the movement direction D2 toward the landing detection plate 21. Then, the mating protrusion 52 is inserted into the mating hole 60 to engage with it. Because the mating protrusion 52 is tapered, it can automatically adjust the position of the landing detection plate 21 as the block 50 advances. The fastening bolt 25 is inserted into the insertion groove 53 formed in the opposing surface 50b of the block 50 and engages with it.

With the fitting protrusion 52 fitted into the fitting hole 60, the landing detection plate 21 is fixed to the hoistway bracket 24. At this time, the fastening bolt 25 and the fastening nut 26 are tightened with a predetermined torque. When tightening, for example, an operator can press the rear surface 50a of the block 50 toward the landing detection plate 21 with the left hand. The operator may also hold the block 50 and the landing detection plate 21 while pressing the block 50. In this way, the fastening nut 26 can be tightened with the right hand while pressing the rear surface 50a. This allows the positioning and tightening work of the landing detection plate 21 to be performed simultaneously by one operator. Therefore, it is not necessary to move the car 3 to tighten the fastening bolt 25 and the fastening nut 26 after the landing detection plate 21 has been positioned.

After the tightening operation, the block 50 is moved backward in the moving direction D2, away from the landing detection plate 21, and the fitting protrusion 52 is removed from the fitting hole 60.

In this way, the positioning of the target landing detection plate 21 is completed.

Then, the positioning of the landing detection plate 21 installed on another floor can be performed. In this case, the car 3 is raised and lowered to position it at the desired position corresponding to the target landing detection plate 21. The positioning of the landing detection plate 21 can then be performed using the same procedure as described above. When moving the car 3 to a landing detection plate 21 installed on another floor, the car 3 may be moved with the block 50 placed on the top surface of the guide bracket 40 without removing the guide bracket 40 from the support 23.

In this manner, according to this embodiment, the guide bracket 40 is fixed to the support 23 that supports the floor landing switch 22, and the block 50 is placed on the upper surface of the guide bracket 40. The block 50 is configured to be movable vertically to the first surface 21a of the floor landing detection plate 21 while being guided by the guide bracket 40. The block 50 includes a fitting protrusion 52 that protrudes from the opposing surface 50b and can be fitted into a fitting hole 60 provided in the floor landing detection plate 21. As a result, after the car 3 is positioned at a desired position relative to the floor landing detection plate 21, the block 50 can be advanced toward the floor landing detection plate 21 to fit the fitting protrusion 52 into the fitting hole 60. With the fitting protrusion 52 fitted into the fitting hole 60, the floor landing detection plate 21 can be fixed to the elevator bracket 24. This makes it possible to eliminate the need to move the car 3, and reduce the labor required for positioning the floor landing detection plate 21.

In addition, according to this embodiment, a guide protrusion 43 extending in the movement direction D2 is provided on the upper surface of the guide bracket 40, and the movement of the block 50 is guided by the guide protrusion 43. This makes it possible to prevent the block 50 from shifting in position in the lateral direction D3. This makes it possible to facilitate the positioning work of the landing detection plate 21.

In addition, according to this embodiment, the fitting protrusion 52 is tapered toward the tip. This allows the fitting protrusion 52 to be easily inserted into the fitting hole 60. Also, the position of the landing detection plate 21 can be automatically adjusted while the block 50 is advanced in the moving direction D2. This makes it easier to position the landing detection plate 21.

In addition, according to this embodiment, the opposing surface 50b of the block 50 is provided with a plurality of insertion grooves 53 into which the fastening bolts 25 for fastening the floor landing detection plate 21 and the elevator shaft bracket 24 can be inserted. This makes it possible to prevent the heads of the fastening bolts 25 from coming into contact with the opposing surface 50b of the block 50 when positioning the floor landing detection plate 21. This allows the block 50 to be brought closer to the floor landing detection plate 21, and the fitting protrusions 52 can be inserted deeply into the fitting holes 60 to fit into the fitting holes 60.

In addition, according to this embodiment, the fastening bolt 25 can be fitted into the insertion groove 53. As a result, when the fastening bolt 25 and the fastening nut 26 are tightened, the insertion groove 53 can prevent the fastening bolt 25 from rotating. Therefore, the fastening nut 26 can be tightened without directly pressing the fastening bolt 25, which makes it easier to tighten the floor landing detection plate 21 to the elevator shaft bracket 24.

In addition, according to this embodiment, the insertion groove 53 extends in the vertical direction D1 from the lower surface to the upper surface of the block 50. This allows for positional deviation of the fastening bolt 25 in the vertical direction D1 relative to the block 50. This makes it easier to position the landing detection plate 21.

In addition, according to this embodiment, the fitting hole 60 is located above the elevator shaft bracket 24. This allows the fitting protrusion 52 to pass through the fitting hole 60 and protrude to the opposite side of the floor landing detection plate 21. This makes it possible to stabilize the fitting state of the fitting protrusion 52 in the fitting hole 60, and facilitates the positioning work of the floor landing detection plate 21. In addition, the positioning accuracy of the floor landing detection plate 21 can be improved.

In the above-described embodiment, the guide bracket 40 may include a locking portion 44 that prevents the block 50 from moving upward from the guide bracket 40. For example, as shown in FIG. 7, the locking portion 44 may extend from the upper end of the guide protrusion 43 in the horizontal direction D3, and the guide protrusion 43 and the locking portion 44 may be formed in a T-shape. The guide recess 51 of the block 50 is also similarly formed in a T-shape, thereby locking the upward movement of the block 50. In this case, the block 50 can be prevented from being removed from the guide bracket 40 during the positioning operation of the landing detection plate 21, and the workability of the positioning operation can be improved.

In the above-described embodiment, an example has been described in which the block 50 includes one mating protrusion 52. However, this embodiment is not limited to this. For example, the block 50 may include two or more mating protrusions 52. In this case, for example, the two mating protrusions 52 may be disposed at different positions in the up-down direction D1. The cross-sectional shape of the two mating protrusions 52 may be rectangular or circular, and is arbitrary.

According to the embodiment described above, it is possible to reduce the amount of work required for positioning the landing detection plate 21.

Although several embodiments of the present invention have been described, these embodiments are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be embodied in various other forms, and various omissions, substitutions, and modifications can be made without departing from the gist of the invention. These embodiments and their modifications are included in the scope and gist of the invention, and are included in the scope of the invention and its equivalents described in the claims.

3: Car, 7: Car guide rail, 20: Landing detection device, 21: Landing detection plate, 21a: First surface, 24: Hoistway bracket, 25: Fastening bolt, 30: Landing detection plate positioning jig, 40: Guide bracket, 43: Guide protrusion, 44: Locking part, 50: Block, 52: Fitting protrusion, 53: Insertion groove, 60: Fitting hole

Claims (8)

A floor-landing detection plate positioning tool for positioning a floor-landing detection plate fixed to an elevator car guide rail via a hoistway bracket, comprising:
A guide bracket fixed to a support that supports a floor-landing switch that detects the floor-landing detection plate;
a block placed on an upper surface of the guide bracket, the block being movable in a moving direction perpendicular to a main surface of the landing detection plate while being guided by the guide bracket;
A fitting hole provided in the landing detection plate;
Equipped with
The block includes a fitting protrusion protruding from a surface on the side of the landing detection plate and capable of fitting into the fitting hole.
Positioning fixture for elevator landing detection plate. A guide protrusion extending in the movement direction is provided on an upper surface of the guide bracket,
The movement of the block is guided by the guide protrusion.
2. The elevator landing detection plate positioning jig according to claim 1. The fitting protrusion is tapered toward the tip.
3. The elevator landing detection plate positioning jig according to claim 1 or 2. An insertion groove into which a fastening part for fastening the floor landing detection plate and the elevator shaft bracket can be inserted is provided on a surface of the block on the side of the floor landing detection plate.
3. The elevator landing detection plate positioning jig according to claim 1 or 2. The fitting hole is disposed above the hoistway bracket.
3. The elevator landing detection plate positioning jig according to claim 1 or 2. the guide bracket includes a stop portion that prevents the block from moving upward from the guide bracket.
3. The elevator landing detection plate positioning jig according to claim 1 or 2. a floor-landing detection plate fixed to an elevator car guide rail via a hoistway bracket;
a floor-landing switch provided in the elevator car and configured to detect the floor-landing detection plate;
A support for supporting the landing switch;
The elevator landing detection plate positioning tool according to claim 1 or 2 for positioning the landing detection plate;
The elevator landing detection device includes: A method for positioning a floor-landing detection plate for positioning a floor-landing detection plate fixed to an elevator car guide rail via a hoistway bracket, comprising:
a step of temporarily fixing the landing detection plate to the guide rail via the elevator bracket;
a step of fixing a guide bracket to a support for supporting a floor-landing switch that detects the floor-landing detection plate, and placing a block including a fitting protrusion on an upper surface of the guide bracket;
a step of moving the block forward toward the landing detection plate and fitting the fitting protrusion into a fitting hole provided in the landing detection plate;
a step of fixing the floor landing detection plate to the elevator shaft bracket in a state in which the fitting protrusion is fitted into the fitting hole;
retracting the block from the landing detection plate;
The method for positioning an elevator landing detection plate includes the steps of:

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