JP5985680B2 - Adjustment mechanism for elevator position detector - Google Patents

Description

Embodiments of the present invention relate to an adjustment mechanism for an elevator position detection device that detects the position of a car, for example.

  The elevator is equipped with a position detection device that forcibly decelerates the car when the car approaches the terminal floor of the hoistway at a speed equal to or higher than a predetermined speed.

  This type of position detection device includes a slow-down switch fixed to a guide rail in the hoistway via a bracket, and a detection plate attached to the car. The slow-down switch has a pair of arm portions facing each other with a gap therebetween, and a groove opened in the hoistway is formed between the arm portions. The detection plate is erected vertically along the hoistway at a position corresponding to the groove of the slow-down switch.

  For this reason, when the detection plate follows the up-and-down movement of the car and passes through the groove of the slow-down switch, the slow-down switch is turned on or off by the detection plate.

JP 2003-238038 A

  In an elevator position detection device, in order to obtain stable characteristics, it is necessary to accurately determine the insertion amount of the detection body along the depth direction of the groove of the slow-down switch.

  However, according to the conventional position detection device, there is no mark or function that serves as a guideline for determining the relative position of the slowdown switch and the detection body, and an adjustment fee for adjusting the position of the detection plate with respect to the slowdown switch. However, the fact is that it is hardly secured.

  For this reason, much work and labor are required for the operation of adjusting the position of the detection plate with respect to the slow-down switch, leaving room for improvement in terms of workability.

An object of the present invention is to obtain an adjustment mechanism of an elevator position detection device that can easily perform an operation of adjusting a relative position between a switch and a detection body .

According to the embodiment, the adjustment mechanism of the elevator position detection device is provided on either the hoistway or the elevating body that moves up and down along the hoistway, and between the pair of arm portions facing each other with a space therebetween. The switch is provided with a groove formed on the other side of the hoistway or the lifting body, and operates the switch by passing through the groove of the switch following the lifting movement of the lifting body, A detecting body capable of adjusting a position along the depth direction of the groove with respect to the switch, and a position adjusting member provided on the detecting body and having a guide surface that contacts the tip of the arm portion of the switch is detachably passed. And a penetrating portion to be provided.
The detection body is fixed to the other of the hoistway or the lifting body at a position where the guide surface of the position adjusting member passed through the penetrating portion is in contact with the tip of the arm portion.

  According to such a configuration, the insertion amount of the detection body along the depth direction of the groove of the switch can be defined based on the position adjustment member. For this reason, the operation | work which adjusts the relative position of a switch and a detection body can be performed easily.

It is sectional drawing which shows the outline of the elevator which concerns on the 1st Embodiment of this invention. In the 1st Embodiment of this invention, it is a perspective view of the cage which raises / lowers along a hoistway. In the 1st Embodiment of this invention, it is a perspective view which shows the state by which the slow down switch was fixed to the guide rail for cars. In the 1st Embodiment of this invention, it is a top view which shows the relative positional relationship of the slowdown switch fixed to the guide rail for cars, and the detection board fixed to the car arm of the car. In the 1st Embodiment of this invention, it is a perspective view which shows the state by which the detection plate was fixed to the cage arm of the passenger car. In 1st Embodiment of this invention, it is sectional drawing which shows the state which adjusted the relative position of the groove | channel of a slowdown switch, and a detection board using the position adjustment member. In the 1st Embodiment of this invention, it is sectional drawing which shows the positional relationship between the position adjustment member attached to the detection board, and a slowdown switch. In 1st Embodiment of this invention, it is sectional drawing which shows the state which attached the position adjustment member to the detection board. In the 2nd Embodiment of this invention, it is a top view which shows the relative positional relationship of the slowdown switch fixed to the guide rail for cars, and the detection board fixed to the car arm of the car. In the 2nd Embodiment of this invention, it is a perspective view which shows the state by which the detection board was fixed to the cage arm of the passenger car. In 3rd Embodiment of this invention, it is sectional drawing which shows the state which attached the position adjustment member to the detection board. In 4th Embodiment of this invention, it is sectional drawing which shows the state which attached the position adjustment member to the detection board.

[First embodiment]
Hereinafter, the first embodiment will be described with reference to FIGS. 1 to 8.

  FIG. 1 schematically shows a traction type elevator 1. As shown in FIG. 1, an elevator 1 mainly includes a hoistway 2, a pair of car guide rails 3, a pair of weight guide rails 4, a car 5, a counterweight 6, a hoisting machine 7, and a control device 8. As an element.

  The car guide rail 3 and the weight guide rail 4 are fixed to the right side wall and the left side wall of the hoistway 2. The car guide rail 3 and the weight guide rail 4 each extend in a straight line along the vertical direction. The car 5 is an example of a lifting body, and is supported in the hoistway 2 via the car guide rail 3 so as to be movable up and down. The counterweight 6 is supported in the hoistway 2 through the weight guide rail 4 so as to be movable up and down.

  The hoisting machine 7 and the control device 8 are installed in a machine room 9 at the upper end of the hoistway 2. The hoisting machine 7 suspends the car 5 and the counterweight 6 from the hoistway 2 via the main rope 11. The control device 8 moves the car 5 and the counterweight 6 up and down along the hoistway 2 by controlling the operation of the hoisting machine 7 in the direction of winding up or unwinding the main rope 11.

  As shown in FIG. 2, the car 5 includes a car frame 12, a car body 13, and a frame body 14. The car frame 12 includes a lower beam 15, an upper beam 16, and left and right vertical frames 17a and 17b. The lower beam 15 straddles between the vertical frames 17 a and 17 b under the car body 13. The upper beam 16 straddles between the vertical frames 17 a and 17 b on the car body 13.

Furthermore, roller-type lower guide devices 18a and 18b are attached to the left end and the right end of the lower beam 15, respectively. Similarly, roller-type upper guide devices 19a and 19b are attached to the left end and the right end of the upper beam 16, respectively. The lower guide devices 18 a and 18 b and the upper guide devices 19 a and 19 b guide the car 5 along the car guide rail 3 so as to be movable up and down by sandwiching the car guide rail 3.

  The car body 13 has a rectangular box shape surrounded by a lower beam 15, an upper beam 16, and left and right vertical frames 17a and 17b. An entrance 20 that is opened and closed by a car door (not shown) is provided on the front surface of the car body 13.

  The frame body 14 is fixed to the upper portions of the vertical frames 17a and 17b so as to be positioned between the car body 13 and the upper beam 16. The frame body 14 is configured by connecting the first to fourth car arms 21a, 21b, 21c, and 21d to each other. The first car arm 21 a and the second car arm 21 b extend horizontally in the depth direction of the car body 13. The third car arm 21 c and the fourth car arm 21 d extend horizontally in the width direction of the car body 13.

  As shown in FIG. 1, a landing 23 is installed for each floor of the building. Each landing 23 has an entrance 24 that leads to the hoistway 2. The entrance / exit 24 is opened and closed by a landing door (not shown), and faces the entrance / exit 20 of the car body 13 when the car 5 reaches the landing 23 on the floor to be stopped.

  As shown in FIG. 1, the elevator 1 includes a position detection device 30 installed in the hoistway 2. The position detection device 30 of the present embodiment is a safety device that decelerates the car 5 when the car 5 approaches the terminal floor of the hoistway 2 at a speed equal to or higher than a predetermined speed. A switch 31 and a detection plate 32 are provided.

  The slow-down switch 31 is arranged in the vicinity of the terminal floor of the hoistway 2 with an interval in the height direction of the hoistway 2. In the present embodiment, a photoelectric switch is employed as the slow down switch 31.

  As shown in FIGS. 3 to 6, each slow-down switch 31 includes a switch body 33. The switch body 33 has a pair of arm portions 34a and 34b. The arm portions 34a and 34b are arranged in parallel so as to be opposed to each other. For this reason, the groove | channel 35 is formed between the arm parts 34a and 34b. The depth direction of the groove 35 coincides with the length direction of the arm portions 34a and 34b. Furthermore, the front ends of the arm portions 34a and 34b include flat end surfaces 36a and 36b. The end surfaces 36a and 36b are located on the same surface.

  As shown in FIG. 6, the light emitting element 38 is provided at the tip of one arm 34a. A light receiving element 39 is provided at the tip of the other arm 34b. The light emitting element 38 and the light receiving element 39 face each other with the groove 35 interposed therebetween. For this reason, the light receiving element 39 receives light emitted from the light emitting element 38.

  As shown in FIGS. 3 and 4, each slow-down switch 31 is fixed to one of the car guide rails 3 via an arm 41 and a first bracket 42. One end of the arm 41 is coupled to one of the car guide rails 3 via rail clips 43a and 43b. Therefore, the arm 41 protrudes horizontally from one car guide rail 3 along the right side wall of the hoistway 2.

  The first bracket 42 is coupled to the projecting end of the arm 41 via a bolt 44. The first bracket 42 protrudes vertically upward from the protruding end of the arm 41. The first bracket 42 has a flat support surface 42a facing the hoistway 2, and the switch body 33 of the slow-down switch 31 is fixed to the support surface 42a.

  More specifically, the switch body 33 has an end portion 33a straddling between the base ends of the arm portions 34a and 34b, and the end portion 33a is attached to the support surface 42a of the first bracket 42 via a screw 45. It is fixed. Due to this fixing, the arm portions 34 a and 34 b of the switch body 31 protrude horizontally from the first bracket 42 into the hoistway 2.

  Therefore, the arm portions 34 a and 34 b are arranged horizontally in the hoistway 2, and the end surfaces 36 a and 36 b of the arm portions 34 a and 34 b stand upright in the hoistway 2. At the same time, a groove 35 between the arm portions 34 a and 34 b is opened in the hoistway 2.

  The detection plate 32 of the position detection device 30 is an example of a detection body. As shown in FIGS. 4 and 5, the detection plate 32 is formed of a straight metal plate having an L-shaped cross-sectional shape. The detection plate 32 has a first plate portion 46a and a second plate portion 46b bent in a direction orthogonal to the first plate portion 46a.

  The detection plate 32 is fixed to the car 5 via the second bracket 47. According to the present embodiment, of the frame body 14 positioned on the upper side of the car body 13, the first car arm 21 a extending horizontally in the depth direction of the car body 13 is the support portion that supports the second bracket 47. Doubles as

  The second bracket 47 includes a pair of fixed pieces 48a and 48b superimposed on the upper surface of the first car arm 21a, and a support surface 49 that stands upright between the fixed pieces 48a and 48b. Yes. The fixing pieces 48 a and 48 b project horizontally outward from both sides of the lower end of the second bracket 47.

  Guide holes 50a and 50b are formed in the fixing pieces 48a and 48b. The guide holes 50 a and 50 b are long holes extending in the depth direction of the groove 35 of the slow down switch 31. Bolts 51 are inserted into the guide holes 50a and 50b from above the fixing pieces 48a and 48b. The bolt 51 passes through the first car arm 21 a and a nut (not shown) is screwed into the penetrating end of the bolt 51.

  As a result, the bolt 51 is tightened, the second bracket 47 is fixed to the upper surface of the first car arm 21a, and the support surface 49 of the second bracket 47 faces the slowdown switch 31. It is kept in.

  The first plate portion 46 a of the detection plate 32 is fixed to the support surface 49 of the second bracket 47 via bolts 52 and nuts 53. The detection plate 32 is erected vertically along the hoistway 2. The second plate portion 46 b of the detection plate 32 protrudes vertically from the support surface 49 of the second bracket 47 toward the right side wall of the hoistway 2. The second plate portion 46 b is located on a vertical line passing through the center of the groove 35 of the slow down switch 31.

  For this reason, when the car 2 moves up and down, the second plate portion 46 b of the detection plate 32 enters the groove 35 of the slow-down switch 31 and blocks light from the light emitting element 38 toward the light receiving element 39. When the amount of light detected by the light receiving element 39 falls below a preset reference value, a signal indicating the position of the car 5 is output from the slowdown switch 31 to the control device 8. For this reason, the slow-down switch 31 is operated by the detection plate 32 that passes through the groove 35.

  As shown in FIGS. 5 and 6, a through hole 55 is formed in the second plate portion 46 b of the detection plate 32. The through hole 55 is an example of a through portion, and is formed in a slit shape extending in the longitudinal direction of the detection plate 32. The through hole 55 has a linear opening edge 55 a extending in the longitudinal direction of the detection plate 32. The opening edge 55a is located on the tip edge 46c side of the second plate portion 46b.

  The position adjusting member 56 is inserted into the through hole 55 so as to be removable. The position adjusting member 56 is an element for defining the insertion amount A of the detection plate 32 along the depth direction of the groove 35 of the slow down switch 31 and is formed in a flat plate shape having a flat guide surface 57, for example. . The position adjusting member 56 has a length straddling at least between the end faces 36a, 36b of the arm portions 34a, 34b of the switch body 33.

  Furthermore, the guide surface 57 of the position adjusting member 56 can come into surface contact with the end surfaces 36a and 36b of the arm portions 34a and 34b. In a state where the guide surface 57 is in contact with the end surfaces 36a and 36b, the insertion amount A of the detection plate 32 along the depth direction of the groove 35 of the slow-down switch 31 coincides with a predetermined appropriate value.

In other words, the distance B between the tip edge 46c of the second plate portion 46b of the detection plate 32 and the terminal end of the groove 35 is set to a predetermined value by the guide surface 57 coming into contact with the end surfaces 36a and 36b. It has become.

  Next, a method for adjusting the relative position between the groove 35 of the slow-down switch 31 and the detection plate 32 using the position adjusting member 56 will be described.

  The car guide rail 30 that guides the raising and lowering movement of the car 5 is essentially fixed to a predetermined position in the hoistway 2 with high accuracy. Therefore, the position of the detection plate 32 for operating the slow-down switch 31 is fixed to the first car arm 21a of the car 5 after adjusting the position with reference to the slow-down switch 31 fixed to the car guide rail 30. .

Specifically, the bolt 51 is loosened, and the second bracket 47 is held in a state where it can freely slide in the longitudinal direction of the guide holes 50a, 50b. The guide holes 50 a and 50 b serve as adjustment margins for the detection plate 32.

  After that, as shown in FIG. 7, the position adjustment member 56 is attached to the detection plate 32 by passing the position adjustment member 56 through the through holes 55 formed in the detection plate 32 so as to be slidable. The guide surface 57 of the position adjustment member 56 is in contact with the opening edge 55a of the through hole 55, and the positional relationship between the position adjustment member 56 and the detection plate 32 is kept constant.

  Thereafter, the detection plate 32 is moved together with the second bracket 47 to a position where the guide surface 57 of the position adjusting member 56 comes into surface contact with the end surfaces 36a, 36b of the arm portions 34a, 34b of the slow-down switch 31. In a state where the guide surface 57 is in contact with the end surfaces 36a and 36b, the insertion amount A of the detection plate 32 along the depth direction of the groove 35 of the slow-down switch 31 coincides with a predetermined appropriate value.

Subsequently, the second bracket 47 is fixed to the upper surface of the first car arm 21a by tightening the nut corresponding to the bolt 51 . At the same time, the position adjusting member 56 is removed from the detection plate 32 by pulling out the position adjusting member 56 from the through hole 55.

  Thereby, the position of the detection plate 32 with respect to the groove 35 of the slow-down switch 31 is fixedly determined, and the operation of adjusting the position of the detection plate 32 is completed.

  According to the first embodiment, the insertion amount of the detection plate 32 along the depth direction of the groove 35 of the slow-down switch 31 using the position adjustment member 56 inserted into the through hole 55 of the detection plate 32 as a guide or a mark. A can be adjusted.

  Therefore, the operation of adjusting the relative position between the slow-down switch 31 and the detection plate 32 can be performed easily and easily, and the workability can be improved.

[Second Embodiment]
9 and 10 disclose a second embodiment. The second embodiment is different from the first embodiment in that the slow-down switch 31 and the detection plate 32 are offset from the car 5 toward the right side wall of the hoistway 2. Other configurations are the same as those in the first embodiment. Therefore, in the second embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.

  As shown in FIG. 9, a first offset bracket 61 is interposed between the car guide rail 3 and one end of the arm 41. Due to the presence of the first offset bracket 61, the arm 41 is offset to the right side wall side of the hoistway 2 with respect to the car guide rail 3. Accordingly, even the slow-down switch 31 fixed to the arm 41 via the first bracket 42 is offset to the right side wall side of the hoistway 2 with respect to the car 5.

  A second offset bracket 62 is fixed to the upper surface of the first car arm 21 a of the car 5 with a bolt 63. As shown in FIG. 10, the second offset bracket 62 is a flat element, and has an extending portion 64 that protrudes toward the right side wall of the hoistway 2 from the first car arm 21a. doing. The upper surface of the second offset bracket 62 including the extending portion 64 is a flat support surface 65 extending in the horizontal direction.

The fixing pieces 48 a and 48 b of the second bracket 47 are fixed on the support surface 65 of the second offset bracket 62 with bolts 51 . Therefore, the detection plate 32 fixed to the second bracket 47 is offset to the right side wall side of the hoistway 2 with respect to the first car arm 21a. Furthermore, the 2nd bracket 47 transfers to the state which can slide freely in the longitudinal direction of guide hole 50a, 50b with respect to the support surface 65 of the 2nd bracket 62 for offset by loosening the volt | bolt 51. FIG.

  According to the second embodiment, the detection plate 32 can be moved together with the second bracket 47 in the depth direction of the groove 35 of the slow-down switch 31. For this reason, the relative position between the groove 35 of the slow-down switch 31 and the detection plate 32 can be adjusted, and the same effect as in the first embodiment can be obtained.

[Third embodiment]
FIG. 11 discloses a third embodiment. In the third embodiment, the shape of the through hole 71 provided in the detection plate 32 is different from that of the first embodiment. As shown in FIG. 11, the through hole 71 includes a slit-like fitting portion 72 through which the position adjusting member 56 is inserted, and a notch portion 73 that is continuous with the fitting portion 72.

  The notch 73 is opened at the tip edge 46c of the second plate portion 46b of the detection plate 32, and expands from the fitting portion 72 toward the tip edge 46c of the second plate portion 46b. It has a shape. Therefore, the opening width L1 of the notch 73 exceeds the width L2 of the position adjusting member 56 at the leading edge 46c of the second plate portion 46b.

  According to such a configuration, as indicated by a two-dot chain line in FIG. 11, the position adjusting member 56 is guided to the fitting portion 72 from the notch portion 73 opened at the tip edge 46 c of the second plate portion 46 b. Can do. Therefore, the operation of inserting the position adjustment member 56 through the through hole 71 can be easily performed, which contributes to improvement in workability.

[Fourth Embodiment]
FIG. 12 discloses a fourth embodiment. The fourth embodiment is different from the first embodiment in the opening shape of the through hole 81 provided in the detection plate 32 and the shape of the position adjusting member 82 inserted through the through hole 81.

  As shown in FIG. 12, the through-hole 81 has a first opening edge 81a and a second opening edge 81b that is curved in an arc shape facing the first opening edge 81a. For this reason, the through-hole 81 has a semicircular opening shape.

  The position adjustment member 82 has a flat guide surface 83 and an outer peripheral surface 84 positioned behind the guide surface 83. The guide surface 83 is slidably in contact with the first opening edge 81a, and is in contact with the end surfaces 36a and 36b of the arm portions 34a and 34b of the slow-down switch 31. The outer peripheral surface 84 is curved in an arc shape along the second opening edge 81b, and slidably contacts the second opening edge 81b.

  Even in such a configuration, the guide surface 83 of the position adjusting member 82 inserted into the through hole 81 of the detection plate 32 can be brought into surface contact with the end surfaces 36a and 36b of the arm portions 34a and 34b of the slow-down switch 31. . Therefore, the same effect as the first embodiment can be obtained.

  Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

  For example, in the first embodiment, the slow-down switch is provided on the hoistway side and the detection plate is provided on the car side, but the detection plate is provided on the hoistway side and the detection plate is provided on the car side. A switch operated by may be provided.

  Further, the switch operated by the detection plate is not limited to the slow down switch, and may be a limit switch that detects the position of the car so that the car does not go too far over the terminal floor of the hoistway.

  In addition, the switch is not limited to the optical type, and a magnetic non-contact proximity switch may be used, for example. In a magnetic non-contact proximity switch, a magnet unit is accommodated in one arm portion of a switch body formed of a non-magnetic material, and a reed switch receiving magnetic force is accommodated in the other arm portion.

  When the detection plate formed of a ferromagnetic material enters the groove between the arm portions, the magnetic force of the magnet unit is shielded by the detection plate, and the reed switch operates. When the detection plate is removed from the groove between the arm portions, the shield of the magnetic force on the reed switch is released, so that the reed switch is restored.

  Therefore, even in the magnetic non-contact proximity switch, the positional relationship between the groove of the switch body and the detection plate is adjusted with high accuracy, so that the characteristics of the switch can be stabilized and the position of the car can be reliably detected.

  In addition, the elevating body is not limited to a car, and may be a pallet on which a car is placed, for example. Therefore, the adjustment mechanism of the elevator position detection switch can also be applied to a multilevel parking device.

  2 ... hoistway, 5 ... elevating body (car), 31 ... switch (slow down switch), 32 ... detector (detection plate), 34a, 34b ... arm, 35 ... groove, 55, 71, 81 ... penetrating Part (through hole), 56, 82 ... position adjusting member, 57 ... guide surface.

Claims (7)

A switch provided in either one of the hoistway or the hoisting body that moves up and down along the hoistway, and having a groove formed between a pair of arms facing each other with a space therebetween;
It is provided on the other side of the hoistway or the hoisting body, and operates the switch by passing through the groove of the switch following the elevating movement of the hoisting body, and the depth direction of the groove with respect to the switch A detection body whose position along the
A penetrating portion provided in the detection body, through which a position adjusting member having a guide surface that contacts a tip of the arm portion of the switch is removably passed,
The detection body includes an elevator position detection device fixed to the hoistway or the other of the elevating body at a position where the guide surface of the position adjusting member passed through the penetrating portion is in contact with a tip of the arm portion. Adjustment mechanism.   2. The adjustment mechanism for an elevator position detection device according to claim 1, wherein the position adjustment member penetrates the detection body in a direction orthogonal to the detection body.   The amount of insertion of the detection body along the depth direction of the groove is defined when the guide surface of the position adjusting member passed through the penetration portion of the detection body comes into contact with the tip of the arm portion. Or the adjustment mechanism of the position detection apparatus for elevators of Claim 2.   When the guide surface of the position adjusting member passed through the penetrating portion of the detecting body comes into contact with the tip of the arm portion, a distance between the leading edge of the detecting body and the end of the groove is determined in advance. The adjustment mechanism of the position detection apparatus for elevators according to claim 1 or 2, wherein the adjustment value is determined to a predetermined value.   The distal end of the arm portion of the switch includes a flat end surface positioned on the same surface, and the guide surface of the position adjusting member is a flat surface parallel to the end surface. The adjustment mechanism of the position detection apparatus for elevators as described in any one of claim | item 4.   The adjustment mechanism for an elevator position detection device according to claim 5, wherein the detection body has a length straddling at least between the end faces of the arm portion. A bracket that is fixed in a posture in which the detection body stands vertically; and a support that is provided on the other side of the hoistway or the hoisting body and supports the bracket,
The bracket has a plurality of fixing pieces formed with a plurality of guide holes extending in the depth direction of the groove, and the fixing pieces are placed on the support portion via a plurality of fastening members penetrating the guide holes. The adjustment mechanism of the position detection apparatus for elevators according to any one of claims 1 to 6, which is fixed.

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