JP5570405B2 - Elevator pit access device - Google Patents

Description

  The present invention relates to an elevator pit exit / entry device.

  The elevator includes a hoistway that extends vertically and a car that is provided so as to be able to be raised and lowered. Usually, a pit in which equipment such as a shock absorber is arranged is formed at the bottom of the hoistway. Maintenance inspection of equipment installed in the pit of the elevator is performed by an operator entering the pit. Therefore, a pit entry / exit device has been conventionally prepared as a device for supporting an operator to enter and exit the pit.

  As an example of a conventional pit exit / entry device, first, there is a configuration disclosed in Japanese Patent Laid-Open No. 2006-206272. In this configuration, a scaffolding base is installed at the lower part of the platform, and an opening or a notch is provided in the platform base or the front sag of the car side, and it is devised to avoid interference between the platform and the front sag during normal operation.

  Japanese Patent Application Laid-Open No. 2003-192253 discloses a technique in which a folding ladder is stored in a pit, and the ladder is assembled by pulling up from the landing when entering or leaving the pit.

  However, in the configuration disclosed in Japanese Patent Laid-Open No. 2006-206272, although there is a merit that installation work time is not required, processing for avoiding interference during normal operation is required for the scaffolding and the front sag, and the number of parts is reduced. Further improvement is desired in view of the high equipment cost. Further, the technique disclosed in Japanese Patent Laid-Open No. 2003-192253 has a problem that the assembling work of the ladder is very complicated and lacks convenience in practical use.

JP 2006-206272 A JP 2003-192253 A

  The present invention has been made in view of the above, and does not require the use of a large number of components or complicated structures, and does not require a great deal of processing for installation, so that a pit entry / exit state can be easily produced. An object of the present invention is to provide an elevator pit entry / exit device.

  In order to achieve the above-described object, the elevator pit entry / exit device of the present invention includes scaffold means arranged in a state of being floated from the bottom surface of the pit, and the scaffold means includes a support member and a long member extending in the left-right direction. The support member is fixed in a state of being floated from the bottom surface of the pit via the side wall of the hoistway, the long member constitutes a step, and the entire long member is the hallway side wall of the hoistway A clearance space is formed between the elongate member and the landing side wall so as to accommodate the landing toe guard in a plan view.

  According to the elevator pit entry / exit device of the present invention, it is possible to easily make the pit entry / exit state appear without complicating the use of a large number of parts or complicating the structure, and without forcing a great deal of processing for installation. it can.

It is a figure which shows the structure of the pit entrance / exit apparatus of the elevator which concerns on Embodiment 1 of this invention. FIG. 3 is a diagram showing a configuration of a support member related to the first embodiment. FIG. 3 is a diagram illustrating a configuration of a long member relating to the first embodiment. FIG. 6 is a front view showing a state in which the car-side front sag enters between a pair of brackets when the car is lowered with respect to the first embodiment. It is a figure of Embodiment 2 related to Embodiment 2. The side surface of the pit entrance / exit device of the elevator which concerns on this Embodiment 3 is shown. It is a figure which shows the cross section by the VII line of FIG. It is a figure of the same aspect as FIG. 7 regarding this Embodiment 4. FIG.

  Embodiments of an elevator pit exit / entry device according to the present invention will be described below with reference to the accompanying drawings. In the drawings, the same reference numerals indicate the same or corresponding parts.

Embodiment 1 FIG.
FIG. 1 shows the configuration of an elevator pit exit / entry device according to the present embodiment, and FIGS. 2 and 3 are diagrams showing the configuration of a support member and a long member according to the present embodiment, respectively. 1 to 3 all show the front of the corresponding configuration in the left half, and the right side surface of the corresponding configuration in the right half. In addition, this embodiment exemplifies a scene suitable for an operator who goes in and out of the hoistway when the pit depth is shallow but there is a one-step scaffold.

  The elevator pit entrance / exit device 1 includes scaffolding means arranged in a state of being lifted from the pit bottom surface 3. As the scaffold means, a support member 5 and a long member 7 extending in the left-right direction are included. The support member 5 is fixed in a state of being lifted from the pit bottom surface 3 via the side wall 9 of the hoistway. The long member 7 constitutes a step on which an operator's load acts, and is supported by the support member 5 in a state where the entire long member is separated from the landing side wall 9a of the hoistway.

  A clearance space 11 is formed between the long member 7 and the landing side wall 9a. In the escape space 11, a landing toe guard (landing side front hanging) 13 is accommodated in a plan view. The landing toe guard 13 is a plate-like member that is suspended from the landing threshold 15 toward the bottom surface 3 of the pit, and prevents personnel in the car from entering the hoistway accidentally in an emergency or malfunction.

  The support member 5 is a pair of left and right brackets 17 and 19 in the present embodiment. Each of the brackets 17 and 19 is a plate-like member having an L-shaped cross section, and includes base wall portions 17a and 19a extending along the landing side wall 9a, and projecting wall portions 17b and 19b rising substantially vertically therefrom. Have. The brackets 17 and 19 are respectively fixed to the landing side wall 9a with anchor bolts or the like at the base wall portions 17a and 19a.

  Further, the brackets 17 and 19 are arranged so as to be distributed obliquely downward to the left and right of the hall toe guard 13 as viewed from the front, in order to avoid the interference of the hall toe guard 13 and the front droop described later. The height at which the brackets 17 and 19 are arranged is set so that the operator can access the elongate member 7 from the pit bottom surface 3 and from the elongate member 7 to the landing 21 without problems.

  A cutout 23 is formed in each of the brackets 17 and 19. The cutout portion 23 has a loading / unloading opening 23a at the upper portion thereof and a support bottom portion 23b at the lower portion thereof. The cutout portion 23 has a locus shape in which the longitudinal section of the long member 7 is slid up and down. The support bottom portion 23b of the present embodiment has a semicircular outline in a side view according to a specific form to be described later of the long member 7.

  The long member 7 of the present embodiment is a pipe. More specifically, the long member 7 has a pipe body portion 7a and a pair of left and right retaining portions 7b. The pipe body 7a is a hollow round bar-like member and extends to the left and right at least longer than the interval between the protruding wall portions 17b and 19b of the pair of left and right brackets 17 and 19. Further, each retaining portion 7b is provided at a corresponding end portion of the pipe body portion 7a, and is an annular portion in the present embodiment. The outer diameter of the retaining portion 7b is larger than the outer diameter of the pipe body portion 7a.

  The long member 7 and the cutout portion 23 are such that the long member 7 can be inserted into and removed from the cutout portion 23 through the insertion / extraction opening 23a, and can slide in the cutout portion 23. It is configured to obtain a stationary support relationship.

  Further, in a state where the long member 7 is supported by the support bottom 23b of the notch 23, the left and right retaining portions 7b are located outside the corresponding protruding wall portions 17b and 19b, When the scale member 7 is likely to move excessively to the left and right, the left and right other retaining portions 7b abut against the corresponding ridge wall portions 17b and 19b, so that further movement of the long member 7 is restricted, The long member 7 is prevented from coming out of the notch 23.

  The elevator pit entrance / exit device 1 further includes string-like means 25. The string means 25 is suspended in the hoistway. As a specific example, the upper end of the string-like means 25 is connected to the landing toe guard 13, and the lower end of the string-like means 25 is connected to the long member 7.

  The string-like means 25 has a state in which the long member 7 is laid on the pit bottom surface 3 (illustrated by a dotted line in FIG. 1) and a state in which the long member 7 is supported by being suspended from the pit bottom surface 3 by the support member 5 (in FIG. 1). The shape can be changed so that the connection with the long member 7 can be maintained in at least two states (shown by a solid line). Therefore, as long as such a shape change is possible, the string-like means 25 may be anything. That is, the string-like means 25 is referred to as a string, a line, a rope, a band, a chain, a wire, a cord, a rope, a means constituted by a plurality of rod members connected in a flexible manner, or the like. It is not a problem whether the shape is changed, and includes those that can change the shape as described above. In the present embodiment, a metal chain is used as an example.

  Next, the operation of the elevator pit exit / entry device 1 according to the present embodiment will be described. During normal elevator operation, the long member 7 is disposed on the pit bottom surface 3. When an operator enters the hoistway using the elevator pit entry / exit device 1, first, the string-like means 25 is handed over on the landing 21, and the long length arranged on the pit bottom surface 3 via the string-like means 25. The member 7 is pulled up. Then, the operator manipulates the string-like means 25 or directly holds the long member 7, inserts one end of the long member 7 into the corresponding cutout portion 23, and further supports the drooping with the string-like means 25. However, the other end of the long member 7 is also inserted into the other cutout 23. Then, the long member 7 is set in a state where both ends of the long member 7 are supported on the corresponding support bottom portions 23b and the retaining portions 7b at both ends function. When the setting of the long member 7 is completed, the operator descends to the pit bottom surface 3 using the long member 7 as a step.

  Further, when the worker on the pit bottom surface 3 returns to the landing 21, the operation is the reverse of the above. First, the worker is in a state where both ends of the long member 7 are supported on the corresponding support bottom 23 b, And the elongate member 7 is set in the state in which the retaining portions 7b at both ends function. Then, the worker climbs to the landing 21 using the long member 7 as a step. After that, the string-like means 25 is brought close together, and one end of the long member 7 is pulled out from the notch 23 while manipulating the string-like means 25, and then the string-like means 25 is manipulated or the long member 7 is directly held. Thus, the other end of the long member 7 is also extracted from the notch 23. Then, the elongate member 7 is gently placed on the pit bottom surface 3 while being supported by the string-like means 25, and the intended operation is completed. Further, in the normal operation of the elevator thereafter, when the car 27 descends to the lowest floor landing, as shown in the front view of FIG. 4, a car for preventing passengers falling from the car floor 29. Although the side sag 31 enters between the pair of brackets 17, 19, the long member 7 is not located between the pair of brackets 17, 19 but is placed on the pit bottom surface 3. Interference with the long member 7 can be avoided. In order to prevent forgetting to remove the long member 7, when the long member 7 is attached to the brackets 17 and 19, a safety means such as a switch for restricting the raising and lowering of the car 27 is separately prepared and carried out. It is also possible to do.

  According to the elevator pit entry / exit device according to the first embodiment described above, the bracket and the long member are both inexpensive and simple parts, and are floated from the bottom of the pit using the side wall of the hoistway. The left and right brackets are provided so as to support the long member as the step portion and avoid the landing toe guard, so that the long member is disposed with a clearance space without interfering with the landing toe guard. Therefore, there is no need for a leg portion placed on the bottom surface of the pit in order to maintain the long member at a desired height. Further, no complicated shape or processing is required to deal with interference with the landing toe guard. Therefore, it is possible to make a pit entry / exit state easily appear without being forced to use a large number of parts or to be complicated in structure and without being forced to process a large amount for installation. In particular, when the hoistway pit depth is less than 1.2 m, it is possible to safely enter and exit the hoistway if there is a simple one-step scaffold directly under the landing. Therefore, in the above case, a complicated assembly work such as a folding ladder is unnecessary, and the inexpensive pit entry / exit device of the present embodiment that can avoid interference with hoistway equipment / cage equipment is provided to the operator. It is possible to remarkably improve convenience while maintaining the safety of the camera, which is very effective.

  In addition, since the long member is arranged with a clearance space by the left and right brackets provided so as to avoid the landing toe guard, even if the landing toe guard exists, the long member does not interfere with the landing toe guard. It can be made detachable. And by making the long member detachable, it is possible to prevent interference between the long member and the car-side front sag, and no complicated shape or processing is required as a countermeasure to the interference with the car-side front sag. . Furthermore, when attaching and detaching the long member to obtain such advantages, the string member is connected to the long member, so that the operator can use the string member while staying at the landing. The position, movement and posture of the scale member can be controlled. Furthermore, since the upper end of such string-like means is connected to the landing toe guard, the operator can easily pull the string-like means from the landing, and the transition to the control by the string-like means described above. Making it more reliable and simple. Furthermore, although it is such a convenient string-like means, the shape changes flexibly, and when it is not in use, it is hung from the landing toe guard so that it does not get in the way during elevator operation. Furthermore, since the attachment / detachment of the long member is only an ascending / descending operation such as insertion / extraction to / from the vertically extending cutout, the auxiliary effect of attaching / detaching the long member by the string-like means has been steadily obtained. Yes. Moreover, the above-described advantages are still obtained with only cheap and simple parts even if the string-like means is included.

Embodiment 2. FIG.
Next, Embodiment 2 of the present invention will be described with reference to FIG. FIG. 5 is a diagram of the same mode as FIG. 1 regarding the second embodiment. The second embodiment is an aspect in which a plurality of steps (two steps in the specific example) are provided, and is the same as the first embodiment except for the portions described below. The elevator pit exit / entry device 201 includes a pair of left and right brackets 217 and 219 and two pipes 207 as the long members 7. Each of the brackets 217 and 219 is formed with at least the same number of pipes, in this example, two notches 233a and 233b. Each of the notches 233a and 233b has the same access opening 23a and support bottom 23b as in the first embodiment, and the pipe 207 is supported on each of the notches 233a and 233b.

  The notches 233a, 233b are arranged side by side in the brackets 217, 219 with a distance in the direction of distance from the landing 21. Furthermore, in the notches 233a and 233b, the farther away from the landing 21 is, the lower the support bottom 23b is. Therefore, the lower the pipe 207 supported by the notch far from the landing 21 is. Supported in position. In this way, a scaffold having two steps is made to appear between the pit bottom surface 3 and the landing 21.

  Also in the second embodiment, as in the first embodiment, the use of a large number of parts and the complexity of the structure are not forced, and the pit entry / exit state can be easily performed without being forced to install a large amount of processing. There are advantages that can appear. In particular, in the second embodiment, the above-mentioned advantages can be provided while allowing a plurality of scaffolds to be installed, in contrast to the case where the pit is deep and the scaffolding is assumed to be one-stage so that an operator may have trouble getting in and out of the pit. It can be obtained.

Embodiment 3 FIG.
Next, Embodiment 3 of the present invention will be described with reference to FIGS. FIG. 6 shows a side view of an elevator pit exit / entry device according to the third embodiment. FIG. 7 is a view showing a cross section taken along line VII of FIG. The third embodiment is the same as the first embodiment except for the parts described below.

  In the pit entrance / exit device 301 of the third embodiment, the long member 7 is fixed by a pair of left and right brackets 317 and 319. More specifically, each of the brackets 317 and 319 is formed with a through hole having a closed contour which is not opened at the edge of the bracket. In the present embodiment, the bracket 317 and 319 are slightly more than the outer diameter of the long member 7. A large contour circular through hole is formed. The long member 7 is supported by inserting the left and right end portions through the through holes of the corresponding brackets 317 and 319. In the present embodiment, there is no equivalent to the above string-like means.

  In addition, a clearance space 311 is formed between the long member 7 and the side wall 9 of the hoistway. In addition to being able to accommodate the landing toe guard 13, the clearance space 311 is also connected to the long member 7 and the landing. The car-side front sag 31 is formed so as to accommodate the toe guard 13. Therefore, even when the car 27 has been lowered most, the front sag 31 is inserted into the elongate member 7 arranged in the gate shape and the escape space 311 located inside the brackets 317 and 319, so that the car side sag 31 Does not interfere with the long member 7.

  Also in the third embodiment, as in the first embodiment, the use of a large number of parts and the complexity of the structure are not forced, and the installation of the pits can be easily performed without being forced to install a large amount of processing. There are advantages that can appear. Further, in the third embodiment, since the long member does not need to be moved and can be fixed to the bracket at all times, the work itself for making the pit entry / exitable state appear unnecessary is also possible. it can. Furthermore, since it is not necessary to consider the need to move the long member, it is possible to adopt a mode in which the long member is supported more firmly. Further, since it is not necessary to move the long member, elements such as the string-like means of the first embodiment can be eliminated, and the cost is reduced due to the simplification of the structure and the reduction in the number of parts. It is also possible to push forward.

Embodiment 4 FIG.
Next, a fourth embodiment of the present invention will be described with reference to FIG. FIG. 8 is a diagram of the same mode as FIG. 7 regarding the fourth embodiment. The fourth embodiment is the same as the third embodiment except for the parts described below.

  In the fourth embodiment, the support mode of the long member 7 is changed from the both-end support mode of the third embodiment to the cantilever mode. In the pit entry / exit device 401, the long member 7 and the bracket 418 are arranged in an L shape, and the long member 7 is fixed in a cantilever manner by a single bracket 418. The bracket 418 has a pair of left and right ridge wall portions 418a and 418b. Each of the projecting wall portions 418a and 418b is formed with a closed contour through-hole that is not opened at the edge of the bracket. In this embodiment, the contour is slightly larger than the outer diameter of the long member 7. The circular through hole is formed. The long member 7 is inserted into and supported by a pair of through holes in the ridge wall portions 418a and 418b. In this embodiment, there is no equivalent to the above string-like means.

  Further, a clearance space 311 is formed between the elongate member 7 and the side wall 9 of the hoistway. The clearance space 311 is also formed in the same size as in the third embodiment. Therefore, even when the car is lowered most, the front sag 31 is inserted into the escape space 311, so that the car side sag 31 does not interfere with the long member 7.

  According to the fourth embodiment, similarly to the first embodiment, the use of a large number of parts and the complexity of the structure are not forced, and the installation of the pit can be easily performed without being forced to install a large amount of processing. There are advantages that can appear. Further, in the fourth embodiment, as in the third embodiment, the long member can be always fixed to the bracket, and a mode in which the long member is supported more firmly can be adopted. it can. Further, the long member can be supported in a cantilever manner by the support manner of the long member by the through hole not considering attachment / detachment as described above, and the pit access device can be made more compact. Furthermore, since it is not necessary to move the long member, elements such as the string-like means of the first embodiment can be eliminated, and the structure can be simplified and the cost can be reduced due to the reduction in the number of parts. It is possible to push forward.

  Although the contents of the present invention have been specifically described with reference to the preferred embodiments, various modifications can be made by those skilled in the art based on the basic technical idea and teachings of the present invention. It is self-explanatory.

  For example, in Embodiments 1 and 2, one string-like means is prepared for one pipe, but instead, two string-like means are provided for one pipe. And you may make it connect the lower end of a string-like means to each edge part of a pipe. According to such an aspect, each end part of the pipe can be directly manipulated, and the attachment and detachment work of the long member can be carried out more conveniently and reliably.

  1,201,301,401 Elevator pit exit / entry device, 3 pit bottom, 5 support member, 7 long member, 9 side wall, 11,311 clearance space, 13 landing toe guard, 17, 19, 217, 219, 317, 319 , 418 Bracket, 21 landing, 23 notch, 23a access opening.

Claims (4)

With scaffolding means arranged in a state of floating from the bottom of the pit,
The scaffold means includes a support member and a long member extending to the left and right,
The support member is fixed in a state of being floated from the bottom surface of the pit through the side wall of the hoistway,
The elongate member constitutes a step, and the entire elongate member is supported by the support member in a state separated from the landing side wall of the hoistway ,
Between the elongate member and the landing side wall, a clearance space is formed in which the landing toe guard is accommodated in a plan view,
The support member is a pair of left and right brackets,
The long member is a pipe,
Each of the brackets is formed with a cutout portion having an opening at the top and a support bottom at the bottom,
The pipe is configured to be inserted and removed from the cutout portion through the opening / closing opening, and to be slidable in the cutout portion, and to be statically supported at the support bottom portion.
Elevator pit entry / exit device. With scaffolding means arranged in a state of floating from the bottom of the pit,
The scaffold means includes a support member and a long member extending to the left and right,
The support member is fixed in a state of being floated from the bottom surface of the pit through the side wall of the hoistway,
The elongate member constitutes a step, and the entire elongate member is supported by the support member in a state separated from the landing side wall of the hoistway,
Between the elongate member and the landing side wall, a clearance space is formed in which the landing toe guard is accommodated in a plan view,
The support member is a pair of left and right brackets,
The long member is a plurality of pipes,
Each of the brackets is formed with at least the same number of notches as the number of the pipes, which has an opening at the top and a support bottom at the bottom.
The plurality of notches are arranged side by side in the perspective direction from the landing in the corresponding bracket,
In the plurality of cutout portions, the farther away from the landing, the lower the support bottom portion,
The pipe is configured to be inserted and removed from the cutout portion through the opening / closing opening, and to be slidable in the cutout portion, and to be statically supported at the support bottom portion.
Elevator pit entry / exit device. It further comprises string-like means,
The string means is suspended in the hoistway,
An upper end of the string-like means is connected to the landing toe guard, and a lower end of the string-like means is connected to the long member,
The string-like means maintains the connection with the long member in at least two states: the state in which the long member is laid on the bottom surface of the pit and the state in which the long member is floated and supported by the support member. The shape can be changed as possible,
The elevator pit entry / exit device according to claim 1 or 2 . The escape space is formed between the landing toe guard and the elongated member, and is formed to have a size that can also accommodate a car-side front sag.
The long member is fixed to the support member without being moved even during elevator operation.
The elevator pit entry / exit device according to claim 1 or 2 .

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