JP4233432B2 - Elevator pit work platform equipment - Google Patents

Description

  The present invention relates to an in-pit work table apparatus for an elevator suitable for maintenance work in a high-speed elevator or the like having a depth in the pit exceeding 4 m.

As this type of prior art, a main work platform is fixed between a pair of car-side guide rails, and a plurality of sub work platforms are arranged between a support portion attached to the inner wall of the pit and the main work table. There has been proposed an in-pit work table apparatus for an elevator in which a sub work table at a position where a tail cord of the work table descends can be removed (see, for example, Patent Document 1).
Japanese Patent Laying-Open No. 2002-20051 (paragraph numbers 0012 to 0022, FIG. 1)

  In the above-described prior art, there is an opening for loosely fitting the car-side guide device projecting to the car lower part on the passage of the sub work table, so that an operator who performs maintenance work walks on the sub work table. It is necessary to walk carefully with sufficient attention to the feet. For this reason, it was not possible to move quickly on the sub workbench. Further, since the plunger portion of the car-side buffer protrudes at the central portion of the main work table, the plunger portion becomes an obstacle, and the quick movement on the main work table cannot be performed. For this reason, the conventional technology has a problem that it cannot be expected to improve the efficiency of maintenance work such as equipment under the car.

  In the above-described prior art, the support member that supports the sub workbench is fixed to the pit side wall. However, in an elevator in which the pit side wall is configured by a relatively soft lightweight concrete board (ALC board). The anchor bolt for fixing the support member cannot be driven, so that the sub work table cannot be installed.

  In the above-described prior art, if the sub workbench is forgotten to be returned, i.e., if the sub workbench is not removed after the maintenance work is completed, this will occur when the tail cord is lowered due to the lowering of the car. There is a concern that the tail cord may get caught on the sub workbench and cause damage to the tail cord.

  The present invention has been made from the above-described prior art, and an object of the present invention is to provide an in-pit worktable device for an elevator that allows a worker on the worktable to move quickly.

In order to achieve the above object, the present invention includes a car guided by a pair of car side guide rails, a counterweight guided by a pair of weight side guide rails, and a car side buffer for preventing the car from falling. In an elevator pit work platform apparatus having a main work platform disposed in a pit of an elevator hoistway with a weight side buffer for preventing the counterweight from falling, and fixed to the car side guide rail, The main workbench is composed of a pair of workbench extending from the landing side toward the back of the hoistway so as to sandwich the car-side buffer, and the outer part located on the back of the hoistway of these worktables However, these work tables are arranged so that they are located immediately below the outer part located on the back side of the car hoistway, and are extended from the landing side of the work table toward the back side of the hoistway. A first U-shaped bracket fixed to the pair of car-side guide rails, and a pair of weights, each of which is formed with a recess that avoids interference with the car-side guide device disposed at the lower part of the car. A second U-shaped bracket fixed to the side guide rail, a connection bracket for connecting the first U-shaped bracket and the second U-shaped bracket, and the first U-shaped bracket and the connection bracket. A height adjustment bracket that is erected on any of the above, the work table is placed on the height adjustment bracket, and the work table is supported by a guide rail of a compensator pulley; and the work table the an auxiliary bracket for supporting the said connecting bracket, and the car side buffer, in a region between said weight side buffer, Is characterized in that a sub-worktable connecting the serial pair of work surface.

In the present invention configured as described above, the pair of work tables constituting the main work table is arranged so as to sandwich the car-side buffer, so that the car-side buffer does not protrude on the work table. Moreover, since the recessed part which avoids interference with a cage | basket | car side guide apparatus is formed in the outer side part of a worktable, an opening etc. are not formed on the channel | path of a worktable. In addition, since these work tables are arranged so that the outer part located on the back side of the hoistway of the workbench is located immediately below the outer part located on the back side of the car hoistway, Can be set to any length. For these reasons, it is less necessary for the worker to pay attention to his / her feet during maintenance work, and the worker can be quickly moved on the work table. Further, the entire apparatus can be supported by the pair of car side guide rails and the pair of weight side guide rails, and it is not necessary to place anchor bolts on the pit side walls. In addition to the pair of work tables constituting the main work table, the sub work table can be used, and a large work area for maintenance work can be secured.

  Further, the present invention is the above invention, wherein the portion of the outer portion that extends from the landing side of the work table toward the back side of the hoistway is excluded from the side of the hoistway from the landing side of the car. Each of the work tables is arranged so as to be positioned in the vicinity of a position immediately below an outer portion extending toward the center.

  According to the present invention configured as described above, the area on which the worker can walk can be enlarged, and the worker can easily walk.

  The present invention is characterized in that, in the above invention, the first U-shaped bracket, the second U-shaped bracket, and the connection bracket are disposed below the plunger portion of the car-side buffer.

  In the present invention configured as described above, the work table installed on the first U-shaped bracket and the connection bracket via the height adjustment bracket is not engaged with the cage when the plunger portion is compressed by the lowering of the cage. Can be placed.

  According to the present invention, in the above invention, a rail clip for fixing the first U-shaped bracket to the pair of car side guide rails and a rail clip for fixing the second U-shaped bracket to the pair of weight side guide rails. It is characterized by having prepared.

  In the present invention configured as above, the first U-shaped bracket and the second U-shaped bracket are fixed by the rail clip, so that it is not necessary to drill holes for inserting bolts or the like into the equipment in the hoistway.

  Further, the present invention is characterized in that, in the above-mentioned invention, the height adjusting bracket is selected from a plurality of pre-prepared lengths corresponding to the elevator.

  The present invention configured as described above can change the height of the work table by selecting the height adjustment bracket.

  Further, the present invention is characterized in that, in the above invention, a gap between the outer portion of the work table and the tail cord connected to one end of the car is set to 300 mm or more.

  The present invention configured as described above can prevent the tail cord and the work table from being engaged by a gap of 300 mm or more when the car is lowered.

  Moreover, the present invention is characterized in that, in the above-mentioned invention, a handrail having a strength capable of attaching a lifeline is provided on the outer side of the work table.

  According to the present invention configured as described above, it is possible to protect the worker's safety with a handrail having a sufficient strength, and to allow the worker to perform a maintenance work by attaching a lifeline.

The present invention makes it possible for a worker on a workbench to move quickly, improves the safety for the worker as compared with the prior art, and improves the efficiency of maintenance work performed on the workbench. be able to. In addition to the pair of work tables constituting the main work table, the sub work table can be used, and a large work area for maintenance work can be secured.

  BEST MODE FOR CARRYING OUT THE INVENTION The best mode for carrying out an elevator pit work table apparatus according to the present invention will be described below with reference to the drawings.

  First, a configuration of an elevator to which an embodiment of an elevator pit work table apparatus according to the present invention is applied will be described. FIG. 1 is a side view showing the corresponding elevator, and FIG. 2 is a front view of the elevator shown in FIG.

  The elevator 1 shown in FIGS. 1 and 2 has a machine room 2 in the upper part of a hoistway 9. A control panel 4 is installed in the machine room 2, and a main rope 5 is wound around the hoisting machine 3 controlled by the control panel 4. One end of the main rope 5 is connected to the car 6, The other end is connected to a counterweight 7. One end of a compensation rope 18 is connected to the lower end of the car 6, the compensation rope 18 is wound around a compensation pulley 17 installed in the pit 10, and the other end is connected to the lower end of the counterweight 7. As shown in FIG. 5 described later, the compensation pulley 17 is held by guide rails 17A and 17B so as to be movable in the vertical direction. One end of a flat tail cord 8 is connected to the control panel 4 described above, and the other end is connected to the lower surface of the car 6.

  The pit 10 of the hoistway 9 is composed of a plunger portion 11A and a cylinder portion 11B located below the car 6, and includes a car-side buffer 11 that prevents the car 6 from falling and a plunger portion located below the counterweight 7. The weight side buffer 12 which consists of 12A and the cylinder part 12B, and prevents the counterweight 7 from falling is provided.

  A car-side guide device 13 is installed on the upper and lower parts of the car 6. The car-side guide device 13 includes guide rollers 13A to 13L, and is arranged so as to sandwich the tooth surfaces of the pair of car-side guide rails 14A and 14B, and guides the car 6 while rolling and rotating. Similarly, a weight-side guide device 15 is installed on the counterweight 7 side. The weight side guide device 15 is also composed of guide rollers 15A to 15L, and is arranged so as to sandwich the tooth surfaces of the pair of weight side guide rails 16A and 16B, and guides the counterweight 7 while rolling and rotating.

  Next, an embodiment of the in-pit worktable apparatus of the present invention provided in the elevator 1 shown in FIGS. FIG. 3 is a view of the elevator shown in FIG. 1 equipped with the present embodiment, a side view showing a state where the car is stopped on the lowest floor, and FIG. 4 is a view showing the elevator shown in FIG. FIG. 5 is a side view showing a state where the car is lowered from the lowest floor and the car side buffer is operated, FIG. 5 is a front view of the present embodiment as viewed from the landing side, and FIG. 6 is the present embodiment. FIG.

  As shown in FIG. 6, the work table apparatus 29 in the pit includes main work tables 24 and 25 and a sub work table 26. These work tables 24, 25 and 26 are made of a steel frame. 24A, 25A, 26A, and floor plates 24B, 25B, 26B fixed to these frames 24A, 25A, 26A by bolts and nuts, respectively. The pair of main work platforms 24 and 25 are extended from the landing side 32 toward the hoistway back side 33 so as to sandwich the car-side buffer 11. These main work platforms 24 and 25 are arranged so that the outer portions of the main work platforms 24 and 25 located on the rear side 33 of the hoistway are located immediately below the outer portion 6A of the car 6 on the rear side 33 of the hoistway. , 25 are arranged. Recesses 24 </ b> C and 25 </ b> C that avoid interference with the guide device 13 disposed at the lower part of the car 6 are respectively formed on the outer side portions extending from the landing side 32 of the main work tables 24 and 25 toward the hoistway back side 33. It is formed. Moreover, the part except the recessed parts 24C and 25C of the outer side part extended toward the hoistway back side 33 from the landing side 32 of the main work platforms 24 and 25 is the hoistway back side from the landing side 32 of the car 6. The main work tables 24 and 25 are arranged so as to be located immediately below the outer portions 6 </ b> B and 6 </ b> C extending toward 33. The work table 25 is arranged so that the outer side of the landing side 32 of the main work table 25 is located near the outer side 6D of the landing side 32 of the car 6. The above-described sub workbench 26 is arranged in a region between the car side buffer 11 and the weight side buffer 12 so as to connect a pair of main work tables 24 and 25. The outer part located on the back side 33 of the hoistway of the sub workbench 26 is also arranged in the vicinity immediately below the outer part 6 </ b> A located on the back side 33 of the car 6.

  Note that the gap 30 between the outer side of the landing side 32 of the main work platform 24 that is closest to the tail cord 8 connected to one end of the car 6 and the tail cord 8 is the fluctuation of the tail cord 8 that occurs when the car 6 moves up and down. Is set to 300 mm or more.

  A ladder 28 is attached to the work table 25. A handrail 27 having a strength capable of attaching a lifeline is attached to the upper part of the outer side of the work tables 24, 25, 26.

  As shown in FIG. 6, a first U-shaped bracket 19 fixed to the pair of car-side guide rails 14A and 14B, a second U-shaped bracket 20 fixed to the pair of weight-side guide rails 16A and 16B, For example, two connection brackets 21 for connecting the first U-shaped bracket 19 and the second U-shaped bracket 20 are provided. Each of the first U-shaped bracket 19, the second U-shaped bracket 20, and the connection bracket 21 is made of steel. As shown in FIG. 3, the first U-shaped bracket 19, the second U-shaped bracket 20, and the connection bracket 21 are disposed below the plunger portion 11 </ b> A of the car-side buffer 11. Further, the interval between the two connection brackets 21 described above is set substantially equal to the interval between the main work tables 24 and 25.

  The first U-shaped bracket 19 is firmly fixed to the pair of car-side guide rails 14A and 14B, and the second U-shaped bracket 20 is firmly fixed to the pair of weight-side guide rails 16A and 16B by the rail clips 31.

  As shown in FIGS. 3 to 5, the first U-shaped bracket 19 and a plurality of height adjustment brackets 22 </ b> A to 22 </ b> E standing on the connection bracket 21 are provided, and the height adjustment brackets 22 </ b> A to 22 </ b> E are mainly provided on the height adjustment brackets 22 </ b> A to 22 </ b> E. Work tables 24 and 25 and a sub work table 26 are placed. The height adjustment brackets 22A to 22E are firmly fixed to the first U-shaped bracket 19 or the connection bracket 21 with bolts and nuts, and the main work tables 24 and 25 and the sub work table 26 are formed with bolts and nuts. It is fixed to the height adjustment brackets 22A to 22E. As the above-described height adjustment brackets 22A to 22E, one having an optimum length corresponding to the elevator is selected from a plurality of height adjustment brackets prepared in advance.

  As shown in FIGS. 3 to 5, auxiliary brackets 23 </ b> A to 23 </ b> C that stably support the main work tables 24 and 25 and the sub work table 26 are provided. As shown in FIG. 5, the auxiliary bracket 23 </ b> A has a lower end firmly fixed to the guide rail 17 </ b> A of the compensation pulley 17 by a rail clip 31, and an upper end fixed to the main work table 25 by bolts and nuts. The auxiliary bracket 23C has a lower end firmly fixed to the guide rail 17B of the compensator pulley 17 by a rail clip 31, and an upper end fixed to the main work table 24 by bolts and nuts. The auxiliary bracket 23B has a lower end fixed to the connection bracket 21 with bolts and nuts, and an upper end fixed to the main work table 25 with bolts and nuts.

  The main work platforms 24 and 25 and the sub work table 26 are moved when the car 6 is lowered from the lowest floor stop position shown in FIG. 3 and the car-side buffer 11 is compressed as shown in FIG. It is arrange | positioned in the height position which the apparatus etc. which are equipped in the lower part do not contact.

  As described above, when performing maintenance work in the pit 10 of the elevator equipped with the present embodiment, the worker uses the ladder 28 shown in FIG. 6 while the car 6 is stopped at a predetermined position. Go up to the work table 25. Thereafter, while freely moving on the main work platforms 24 and 25 and the sub work table 26, the car-side guide device 13, the car-side buffer 11, the emergency stop mechanism (not shown) provided at the lower part of the car 6, Maintenance inspection of the weight detector switches, the weight rope guides 15 provided at the lower part of the counterweight 7, the weight detector switches, the compensator 17 attachment portion, or the weight 7 is performed. . At this time, since the workers on the main work tables 24 and 25 and the sub work table 26 can reach the lower part of the car 6 stopped at a predetermined position without difficulty, they are not forced to take an unreasonable posture and are safe. In addition, maintenance and inspection can be performed with an easy posture. In addition, since the handrail 27 for fall prevention has sufficient strength that a lifeline can be used, high safety can be secured also in this respect.

In the present embodiment configured as described above, since the pair of main work platforms 24 and 25 are arranged so as to sandwich the car-side buffer 11, the car-side buffer 11 protrudes on the main work tables 24 and 25. There is nothing. In addition, since a recess that avoids interference with the car-side guide device 13 is formed on the outer side of the main work platforms 24 and 25, openings and the like are formed on the passages of the main work tables 24 and 25 and the sub work table 26. There is nothing to do. The main work tables 24 and 25 are arranged so that the outer portion located on the hoistway back side 33 of the main work tables 24 and 25 is located immediately below the outer portion 6A located on the hoistway back side 33 of the car 6. 25, the main work tables 24, 25 can be set to a sufficient length. From these facts, it is less necessary for the operator to pay attention to his / her feet during the maintenance work, and the worker can be quickly moved on the main work tables 24 and 25 and the sub work table 26. As a result, it is possible to ensure excellent safety for the worker and improve the efficiency of maintenance work performed on the main work tables 24 and 25 and the sub work table 26. The first U-shaped bracket 19 fixed to the pair of car-side guide rails 14A and 14B, the second U-shaped bracket 20 fixed to the pair of weight-side guide rails 16A and 16B, and the first U-shaped bracket 19 And a connection bracket 21 that connects the second U-shaped bracket 20, and height adjustment brackets 22 </ b> A to 22 </ b> E that are erected on either the first U-shaped bracket 19 or the connection bracket 21. The main work tables 24 and 25 and the sub work table 26 are mounted on the height adjustment brackets 22A to 22E. As a result, the entire apparatus can be supported by the pair of car-side guide rails 14A and 14B and the pair of weight-side guide rails by 16A and 16B, and anchor bolts need not be placed on the pit side walls. Therefore, even an elevator in which the pit side wall is configured by a lightweight concrete board (ALC board) can be installed, and maintenance work on the main work tables 24 and 25 and the sub work table 26 can be performed.

  Further, in the present embodiment, a portion excluding the recesses 24 </ b> C and 25 </ b> C of the outer portion extending from the landing side 32 of the main work tables 24 and 25 toward the hoistway back side 33 is removed from the landing side 32 of the car 6. The main work tables 24 and 25 are arranged so as to be located in the vicinity of the outer portions 6B and 6C extending toward the back side 33 of the hoistway. Thereby, the area where the worker on the main work tables 24 and 25 can walk can be increased, and the worker can easily walk and contribute to the improvement of the efficiency of the maintenance work.

  Further, in the present embodiment, a sub work table 26 that connects a pair of main work tables 24 and 25 is arranged in an area between the car side buffer 11 and the weight side buffer 12. Thereby, in addition to the main work tables 24 and 25, the sub work table 26 can be used, and a large work area for maintenance work can be secured. This also improves the efficiency of maintenance work.

  In the present embodiment, the first U-shaped bracket 19, the second U-shaped bracket 20, and the connection bracket 21 are arranged below the plunger portion 11A of the car-side buffer 11. Thereby, as described above, the main work platforms 24 and 25 and the sub work table 26 installed on the first U-shaped bracket 19 and the connection bracket 21 via the height adjustment brackets 22A to 22E are moved downward. It can arrange | position so that it may not engage with the cage | basket | car 6 in the case of compression of 11 A of plunger parts.

  In this embodiment, the rail clip 31 that fixes the first U-shaped bracket 19 to the pair of car-side guide rails 14A and 14B, and the rail that fixes the second U-shaped bracket 20 to the pair of weight-side guide rails 16a and 16b. The clip 31 is provided. Since the first U-shaped bracket 19 and the second U-shaped bracket 20 are fixed by the rail clip 31 in this way, holes for inserting bolts into the hoistway device are not required, and installation in the pit 10 is not necessary. Is easy.

  Further, the above-described height adjustment brackets 22A to 22E of the present embodiment are selected from a plurality of previously prepared lengths corresponding to the elevator. That is, in this embodiment, by selecting the optimum height adjustment brackets 22A to 22E according to the elevator model, the main work platforms 24 and 25 suitable for performing the maintenance work related to the elevator of the corresponding model, the sub work The height of the base 26 can be changed. This also contributes to improving the efficiency of maintenance work.

  In the present embodiment, the gap between the outer portion of the main work table 24 and the tail cord 8 connected to one end of the car 6 is set to 300 mm or more. Thereby, when the car 6 is lowered, the engagement between the tail cord 8 and the main work table 24 can be prevented by the above-described gap of 300 mm or more, and damage to the tail cord 8 can be surely prevented.

  Further, in the present embodiment, a handrail 27 having a strength capable of attaching a lifeline is provided on the outer side of the main work tables 24 and 25 and the sub work table 26. As described above, the handrail 27 can ensure the safety of the worker during the maintenance work, and can also perform the maintenance work by attaching the lifeline to the worker. That is, excellent safety can be ensured.

  In addition, this embodiment can always be equipped, without removing so that the maintenance operation | work in the elevator of an applicable model is always possible.

1 is a side view showing an elevator to which an embodiment of an in-pit worktable apparatus according to the present invention is applied. It is a front view of the elevator shown in FIG. FIG. 2 is a side view showing a state where the elevator shown in FIG. 1 is equipped with the present embodiment and the car is stopped on the lowest floor. FIG. 2 is a side view showing a state where the elevator shown in FIG. 1 is equipped with the present embodiment and the car is lowered from the lowest floor and the car side buffer is operated. It is the front view which looked at this embodiment from the landing side. It is a top view of this embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Elevator 6 Car 6A-6D Outer part 7 Balance weight 8 Tail cord 9 Hoistway 10 Pit 11 Car side buffer 11A Plunger part 11B Cylinder part 12 Weight side buffer 12A Plunger part 12B Cylinder part 13 Car side guide apparatus 13A-13L Guide roller 14A, 14B Car side guide rail 15 Weight side guide device 15a-15L Guide roller 16A, 16B Weight side guide rail 17 Compensation pulley 17A, 17B Guide rail 19 First U-shaped bracket 20 Second U-shaped bracket 21 Connection bracket 22A-22E Height adjustment brackets 23A to 23C Auxiliary bracket 24 Main work table 24A Frame 24B Floor plate 24C Recess 25 Main work table 25A Frame 25B Floor plate 25C Recess 26 Sub work table 26A Frame 26 Floorboard 27 handrail 28 ladders 29 pit workbench apparatus 30 gap 31 rail clip 32 landing side 33 elevator shaft back side

Claims (7)

A car guided by a pair of car side guide rails, a counterweight guided by a pair of weight side guide rails, a car side buffer for preventing the car from falling, and a weight side buffer for preventing the counterweight from falling Placed in the pit of the elevator hoistway with
In an elevator pit worktable apparatus having a main worktable fixed to the car-side guide rail,
The main work platform comprises a pair of work tables respectively extending from the landing side toward the hoistway back side so as to sandwich the car-side buffer,
While arranging these work tables so that the outer part located on the back side of the hoistway of these work tables is located near the outer part located on the back side of the hoistway of the car,
In each of the outer parts extending from the platform side of the work platform toward the back of the hoistway, a recess is formed to avoid interference with the car side guide device arranged at the lower part of the car,
A first U-shaped bracket fixed to the pair of car-side guide rails; a second U-shaped bracket fixed to the pair of weight-side guide rails; the first U-shaped bracket; and the second U-shaped bracket; And a connection bracket for connecting
A height adjustment bracket erected on any of the first U-shaped bracket and the connection bracket;
Place the above worktable on this height adjustment bracket,
Furthermore, an auxiliary bracket for supporting the work table on the guide rail of the compensator pulley, and an auxiliary bracket for supporting the work table on the connection bracket,
An elevator pit work table apparatus, wherein a sub work table connecting the pair of work tables is disposed in a region between the car side buffer and the weight side buffer . In the invention of claim 1,
Of the outer portion extending from the platform side of the work platform toward the hoistway back side, the portion excluding the concave portion is an outer portion extending from the car landing side toward the hoistway back side. An elevator pit worktable device, wherein the worktables are arranged so as to be located immediately below the elevator. In the invention of claim 1,
An elevator pit work table apparatus , wherein the first U-shaped bracket, the second U-shaped bracket, and the connection bracket are disposed below a plunger portion of the car-side buffer . In the invention of claim 1,
An elevator comprising: a rail clip that fixes the first U-shaped bracket to the pair of car-side guide rails; and a rail clip that fixes the second U-shaped bracket to the pair of weight-side guide rails . Work table device in the pit. In the invention of claim 1,
The work table apparatus in an pit of an elevator, wherein the height adjustment bracket is selected from a plurality of prepared different lengths corresponding to the elevator. In the invention of claim 1,
An in-pit work table apparatus for an elevator characterized in that a gap between an outer portion of the work table and a tail cord connected to one end of the car is set to 300 mm or more . In the invention of claim 1,
An elevator pit worktable apparatus, comprising a handrail having a strength capable of engaging a lifeline on an outer side of the worktable .

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