Counter weight for elevator, configuring method thereof, and elevator

Abstract

To provide a counter weight for an elevator, which can increase a load by eliminating a useless space, a configuring method thereof, and the elevator.SOLUTION: The counter weight for the elevator comprises: at least one sub-weight 64 having a total length shorter than an interval between a pair of vertical frames 50 and 50, disposed on a weight 55 so as not to be hung at each end on a flange 50a, and loaded up to the height position or the higher position of an opening 50c; and sub-weight fixing means 56.SELECTED DRAWING: Figure 5

Description

Technical Field

[0001] The present invention relates to a counterweight of an elevator, a method for configuring the same, and an elevator.

Background Art

[0002] As this type of counterweight, it generally has a pair of vertical frames and a weight. The pair of vertical frames are arranged opposite to each other with a space therebetween in the left - right direction. Each vertical frame has a pair of flanges along the up - down direction. The weight has an overall length longer than the space between the pair of vertical frames, and is arranged and loaded between the pair of vertical frames such that each end is inserted between the pair of flanges.

[0003] The weight is sequentially inserted between the pair of vertical frames obliquely with respect to the horizontal, and is lowered and loaded while being returned to the horizontal. However, according to this configuration method, a space for inserting the weight obliquely with respect to the horizontal between the pair of vertical frames is required, and the weight can only be loaded up to where this space can be secured.

[0004] Therefore, a structure has been proposed in which an opening (notch) is provided at a location on the upper side of the flange (FIG. 7 of Patent Document 1). In this case, up to the middle, it may be the same as the above - mentioned configuration method. However, at the end, the weight is inserted between the pair of vertical frames horizontally with each end passing through the opening, and is lowered and loaded as it is. According to this configuration method, the loading capacity can be increased without increasing the overall height of the counterweight.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0006] However, even with this structure, from the perspective of preventing the weight from falling off, the weight is loaded to a height position where it does not reach the opening, and is not loaded up to the height position of the opening or to a height position higher than this. Therefore, the upper space of the weight at the height position of the opening becomes a wasted space.

[0007] Therefore, the present invention has been made in view of such circumstances, and an object thereof is to provide a counterweight for an elevator, a configuration method thereof, and an elevator that can increase the loading amount by eliminating wasted space.

Means for Solving the Problems

[0008] The counterweight of the elevator according to the present invention is A pair of vertical frames that are arranged opposite to each other with a space therebetween in the left - right direction, each having a pair of flanges along the vertical direction, and at least one having an opening at a location on the upper side of the flange, and A weight that has a total length longer than the interval between the pair of vertical frames, and is arranged between the pair of vertical frames such that each end is inserted between the pair of flanges, and is loaded to a height position where it does not reach the opening, and A sub - weight that has a total length shorter than the interval between the pair of vertical frames, and is arranged on the weight such that each end does not hang on the flange, and is loaded up to the height position of the opening or to a height position higher than this, and Fixing means for the sub - weight. It is a counterweight of an elevator.

[0009] Further, as an aspect of the counterweight of the elevator according to the present invention, The sub - weight is provided with holes penetrating in the vertical direction at at least two locations, The fixing means for the sub - weight is A base that has a total length longer than the interval between the pair of vertical frames, and is arranged on the weight such that each end is inserted between the pair of flanges, and is integrally fixed to the weight, and on which the sub - weight is arranged, and A shaft body that protrudes upward from the base and is inserted into each hole of the sub-weight, and a fixture attached to each shaft body protruding from the sub-weight. Such a configuration can be adopted.

[0010] Also, as one aspect of the counterweight of the elevator according to the present invention, the fixing means of the base is a stopper attached to each vertical frame and abutting on the base from above. Such a configuration can be adopted.

[0011] Also, the method for constructing the counterweight of the elevator according to the present invention is a step of loading weights, or a step of preparing a counterweight from which the weight fixing means has been removed once the counterweight is constructed, and a step of placing the base before attaching each shaft body on the weight, a step of integrally fixing the base to the weight using the fixing means, a step of placing the sub-weight on the base so that each hole of the sub-weight coincides with the shaft body attachment location of the base, a step of inserting each shaft body into each hole of the sub-weight and attaching it to the base, a step of attaching the fixture to each shaft body protruding from the sub-weight. This is a method for constructing the counterweight of the elevator.

[0012] Also, another method for constructing the counterweight of the elevator according to the present invention is a step of loading weights, or a step of preparing a counterweight from which the weight fixing means has been removed once the counterweight is constructed, and a step of placing the base with each shaft body attached on the weight, a step of integrally fixing the base to the weight using the fixing means, a step of placing the sub-weight on the base while inserting each shaft body into each hole, a step of attaching the fixture to each shaft body protruding from the sub-weight. A method for configuring a counterweight of an elevator.

[0013] In addition, the elevator according to the present invention A car that moves up and down in a hoistway, A counterweight connected to the car via a main rope and moving up and down in the hoistway in conjunction with the movement of the car. It is an elevator.

Advantages of the Invention

[0014] According to the present invention, a sub-weight is loaded in the space above the weight at the height position of the open portion. Therefore, according to the present invention, it is possible to increase the loading capacity by eliminating wasted space.

Brief Description of the Drawings

[0015]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Embodiments for Carrying out the Invention

[0016] Hereinafter, the elevator according to this embodiment will be described.

[0017] As shown in FIG. 1, the elevator 1 includes a hoistway 2, a car 3, and a drive mechanism 4 for the car 3. The hoistway 2 extends vertically within a building having floors. The car 3 moves up and down within the hoistway 2 by the drive of the drive mechanism 4 and stops at a designated floor when the drive of the drive mechanism 4 stops.

[0018] The car 3 is provided with guide bodies 31 such as guide shoes or roller guides at the upper and lower portions of the vertical frame 30. Inside the hoistway 2, a pair of guide rails 20, 20 extending vertically are arranged on both sides of the car 3, and the car 3 can move up and down within the hoistway 2 while being guided by the four guide bodies 31,... in the vertical and horizontal directions along the pair of guide rails 20, 20.

[0019] The drive mechanism 4 includes a car sheave 40, a first overhead sheave 41, a hoisting machine 42, a second overhead sheave 43, a counterweight 5, a counterweight sheave 53, and a main rope 44. A sheave refers to a pulley.

[0020] The car sheave 40 is disposed at the lower part of the car 3. The first overhead sheave 41 and the second overhead sheave 43 are disposed on the upper part (frame disposed thereon) in the hoistway 2. The hoisting machine 42 is disposed at the lower part in the hoistway 2. The counterweight 5 is disposed in the space formed between the wall surface of the hoistway 2 and the car 3 and moves up and down in the hoistway 2. The counterweight 5 is provided with guide members 51 such as guide shoes and roller guides at the upper and lower parts of the left and right vertical frames 50, 50. In the hoistway 2, a pair of guide rails 21, 21 extending vertically are disposed on both sides of the counterweight 5, and the counterweight 5 can move up and down in the hoistway 2 while the four guide members 51,... in the vertical and horizontal directions are guided by the pair of guide rails 21, 21. The counterweight sheave 53 is disposed on the upper frame 52 of the counterweight 5.

[0021] One end 44a of the main rope 44 is fixed to the upper part (frame disposed thereon) in the hoistway 2, and is wound around the car sheave 40, the first overhead sheave 41, the drive sheave (not shown) of the hoisting machine 42, the second overhead sheave 43 and the counterweight sheave 53, and the other end 44b is fixed to the upper part (frame disposed thereon) in the hoistway 2. When the drive sheave of the hoisting machine 42 rotates and drives, the main rope 44 runs, and accordingly, the car 3 to which the car sheave 40 is attached moves up and down in the hoistway 2. Similarly, when the main rope 44 runs, the counterweight 5 to which the counterweight sheave 53 is attached moves up and down in the hoistway 2.

[0022] As shown in FIG. 2, the counterweight 5 includes a frame and a plurality of types of weights. The frame includes the pair of vertical frames 50, 50 described above, an upper frame 52, and a lower frame 54. The weights include a plurality of weights 55 (55A, 55B),..., a base 57, and a plurality of sub-weights 64 (64A),....

[0023] A pair of vertical frames 50, 50 are arranged to face each other with a space therebetween in the left - right direction. The vertical frame 50 is constituted by using a section steel. As an example, the section steel is a channel steel. Alternatively, the section steel is an H - shaped steel or an I - shaped steel. In any case, the vertical frame 50 includes a pair of flanges and a web along the vertical direction. The pair of flanges are arranged to face each other with a space therebetween in the front - rear direction (the direction perpendicular to the plane of Figure 2). The web connects the pair of flanges. The space surrounded by the pair of flanges and the web on three sides is open on one side, and the vertical frame 50 is arranged such that this open side faces the other vertical frame 50.

[0024] The upper frame 52 connects the upper ends of the pair of vertical frames 50, 50. The upper frame 52 is plate - shaped, and a pair of them are provided so as to sandwich the pair of vertical frames 50, 50. The counterweight sheave 53 is arranged between the two plates of the upper frame 52 and is rotatably attached. Note that the lower edge of the counterweight sheave 53 may or may not protrude downward from the lower edge of the upper frame 52. This depends on the specifications. The lower frame 54 connects the lower ends of the pair of vertical frames 50, 50.

[0025] Weights 55(55A, 55B), …, the base 57 and sub - weights 64(64A), … are accommodated inside the frame. Inside the frame, they are stacked in the vertical direction along the longitudinal direction of the vertical frame 50 and along the vertical plane. As will be described later, since the weights 55(55A, 55B), …, the base 57 and sub - weights 64(64A), … are plate - shaped, they are laminated in the vertical direction along the longitudinal direction of the vertical frame 50 and along the vertical plane inside the frame.

[0026] As shown in FIGS. 3 and 4, each vertical frame 50 includes an opening 50c. The opening 50c is provided at an upper portion of the flange 50a on the front side (front surface side) of the vertical frame 50. The opening 50c is a notch that cuts out the flange 50a from the leading edge of the flange 50a toward the web 50b of the vertical frame 50. As an example, the opening 50c is a notch having a vertically long rectangular shape. Due to the opening 50c, the space surrounded by the pair of flanges 50a, 50a and the web 50b can be accessed from the front side of the counterweight 5 in part.

[0027] The weight 55 has an overall length longer than the distance between the pair of vertical frames 50, 50 (the distance between the leading edges of the flanges 50a of one vertical frame 50 and the leading edges of the flanges 50a of the other vertical frame 50; hereinafter the same). The overall length of the weight 55 is slightly shorter than the opening length between the left and right openings 50c, 50c (the distance between the vertical edges of the opening 50c of one vertical frame 50 and the vertical edges of the opening 50c of the other vertical frame 50; hereinafter the same). The weight 55 is in the form of a flat plate having a predetermined thickness and is also referred to as a weight plate. The weight 55 is made of metal. As an example, the weight 55 is made of steel. The weight 55 includes a main body 55a and two end portions 55b, 55b. The main body 55a has a rectangular shape in plan view. The main body 55a has a width larger than the width of the vertical frame 50 (the distance between the outer surfaces of the pair of flanges 50a, 50a; hereinafter the same). The end portion 55b is a protruding portion having a width smaller than the width of the main body 55a. The end portion 55b has a width slightly smaller than the distance between the pair of flanges 50a, 50a (the distance between the inner surfaces of the pair of flanges 50a, 50a; hereinafter the same).

[0028] The weight 55 is disposed between the pair of vertical frames 50, 50 such that each end portion 55b is inserted between the pair of flanges 50a, 50a and is loaded to a height position that does not reach the left and right openings 50c, 50c. At this time, both side edges in the width direction of the end portion 55b are in contact with or close to the inner surfaces of the pair of flanges 50a, 50a, and the longitudinal edges of the main body 50a are in contact with or close to the leading edges of the flanges 50a. For this reason, the weight 55 is restricted from floating in the longitudinal direction and the width direction.

[0029] The weight 55 has two types of thicknesses. The weight 55A with a larger thickness is the standard type. The weight with a smaller thickness (thin type) 55B is mainly used for weight adjustment. The weight 55B is loaded on the weight 55A in order to finish the total weight of the counterweight 5 to the designed value.

[0030] The base 57 is formed with engagement holes 57c in the weight 55A. Therefore, the base 57 has the same shape as the weight 55A, is also called a base plate, and is made of the same material.

[0031] The base 57 is provided with engagement holes 57c at two locations. The two engagement holes 57c, 57c are on a line parallel to the center line in the width direction of the base 57 and are formed at line-symmetric positions centered on the center line in the longitudinal direction of the base 57. The engagement hole 57c is a hole that penetrates the base 57 in the vertical direction. Alternatively, the engagement hole 57c is a retaining hole having a bottom. As an example, the engagement hole 57c is a through or retaining female screw.

[0032] The base 57 is arranged on the weight 55 such that each end 57b is inserted between a pair of flanges 50a, 50a and contacts and overlaps with the uppermost weight 55B, and is integrally fixed with the weight 55, and the sub-weight 64 is arranged thereon.

[0033] The sub-weight 64 has an overall length shorter than the interval between the pair of vertical frames 50, 50. The sub-weight 64 is in the shape of a flat plate having a predetermined thickness, and is also called a sub-weight plate. The sub-weight 64 is made of the same material as the weight 55. The sub-weight 64 includes a main body 64a. The main body 64a has a rectangular shape in plan view. The main body 64a has a width larger than the width of the vertical frame 50 but smaller than the width of the main body 55a of the weight 55.

[0034] The sub-weight 64 is provided with insertion holes 64c at two locations corresponding to the engagement holes 57c, 57c of the base 57. The two insertion holes 64c, 64c are on the center line in the width direction of the sub-weight 64 and are formed at line-symmetric positions centered on the center line in the longitudinal direction of the sub-weight 64. The insertion hole 64c is a hole that penetrates the sub-weight 64 in the vertical direction and is a round hole.

[0035] The sub-weight 64 is arranged on the weight 55 such that each end does not hang on the flange 50a, and the lowermost sub-weight 64 is in contact with and overlaps the base 57, and is loaded up to the height position of the left and right open portions 50c, 50c or a height position higher than this.

[0036] The sub-weight 64 has one type of thickness. As an example, the sub-weight 64 has the same thickness as the weight 55A. However, even in this case, the sub-weight 64 has a total length and width smaller than the total length and width of the weight 55A and has an area smaller than the area of the weight 55A, so it is lighter than the weight of the weight 55A. In this sense, the sub-weight 64 not only increases the loading capacity but also has an aspect of weight adjustment.

[0037] As shown in FIG. 5, the counterweight 5 includes a sub-weight fixing body 56 as a fixing means for the sub-weight 64 and a stopper 60 as a fixing means for the base 57.

[0038] The sub-weight fixing body 56 includes the base 57, the shaft body 58, and the fixture 59 described above. The lower end of the shaft body 58 is engaged with the engagement hole 57c of the base 57 and integrated with the base 57. Two shaft bodies 58 are provided corresponding to two insertion holes 64c, 64c of the sub-weight 64, protrude vertically upward from the positions corresponding to the respective insertion holes 64c in the base 57, and are inserted into the respective insertion holes 64c. As an example, the shaft body 58 is a stud bolt having all-thread bolts or screws at both ends, and the lower end is screwed into the female thread of the engagement hole 57c. The fixture 59 has a shape larger than the diameter of the insertion hole 64c and is attached to each shaft body 58 protruding from the sub-weight 64 so as to abut against the sub-weight 64 from above. As an example, the fixture 59 is a double nut and includes a washer and a spring washer as necessary.

[0039] The stopper 60 includes a bracket 61, a shaft body 62, and a fixture 63. The bracket 61 has two intersecting parts and has an L shape. One part and the web 50b of the vertical frame 50 are provided with insertion holes at two positions, and the shaft body of the fastener is inserted therein, and one part is detachably attached to the vertical frame 50. The web 50b of the vertical frame 50 is provided with insertion holes at a plurality of positions in the vertical direction. Thereby, one part is attached so that the height position can be changed. The other part has a length protruding from between the leading edges of the pair of flanges 50a, 50a. The other part is provided with an engagement hole 61a at one position. The engagement hole 61a is a hole penetrating the other part in the vertical direction. The engagement hole 61a is formed at a position on the leading end side of the other part rather than between the leading edges of the pair of flanges 50a, 50a. As an example, the engagement hole 61a is a female thread. The lower side of the shaft body 62 is engaged with the engagement hole 61a so as to protrude from the bracket 61, and is integrated with the bracket 61 so that the protruding amount of the protruding part can be changed. As an example, the shaft body 62 is a hexagonal bolt, and the middle part of the shaft body is screwed into the female thread of the engagement hole 61a. The fixture 63 is attached to the part of the shaft body 62 protruding from the other part of the bracket 61 so as to abut against the other part from above. As an example, the fixture 63 is a nut.

[0040] As described above, the weight 55, … and the base 57 are restricted from moving freely in the left - right direction and the front - rear direction by a pair of vertical frames 50, 50. Also, when the stopper 60 abuts on the base 57 from above, the upward movement (lifting) is restricted. The sub - weights 64, … are also restricted from moving freely in the left - right direction and the front - rear direction by the shaft bodies 58 and the fixtures 59, and the upward movement (lifting) is restricted by the fixtures 59.

[0041] The configuration of the elevator 1 and the counterweight 5 according to this embodiment is as described above. Next, the method of configuring the counterweight 5 will be described. There are two methods.

[0042] As shown in FIG. 6, the first method includes the following steps. (Step 1) Prepare the counterweight 5 (FIG. 6(a)) from which the stopper 60 has been removed once (FIG. 6(b)). (Step 2) Place (mount) the base 57 before attaching each shaft body 58 on the weight 55 (FIG. 6(c)). (Step 3) Fix the base 57 integrally with the weight 55 using the stopper 60 (re - attach it) (FIG. 6(d)). (Step 4) Place (mount) the sub - weight 64 on the base 57 so that each hole of the sub - weight 64 coincides with the shaft - mounting portion of the base 57 (FIG. 6(e)). (Step 5) Insert each shaft body 58 through each hole of the sub - weight 64 and attach it to the base 57 (FIG. 6(f)). (Step 6) Attach the fixture 59 to each shaft body 58 protruding from the sub - weight 64 (FIG. 6(f)).

[0043] According to the first method, there are effects such as eliminating the laboriousness of the operation of inserting each sub - weight 64 one by one through the shaft body 58, and it is less likely to cause interference with the lower edge portion of the counterweight sheave 53 when it protrudes downward from the lower edge of the upper frame 52, and more sub - weights 64 can be loaded.

[0044] Note that Step 1 is a step that is performed when it is found that the total weight is still insufficient after the counterweight 5 has been configured once, or when it becomes necessary to increase the total weight of the counterweight 5 due to the addition of some configuration to the cage 3 side later. When a new counterweight 5 is installed, Step 1 is as follows. Steps 2 and later are the same. (Step 1) Step of loading the weight 55 (Fig. 6(b))

[0045] As shown in Fig. 7, the second method comprises the following steps. (Step 1) Step of preparing the removed stopper 60 from the once configured counterweight 5 (Fig. 7(a)) (Fig. 7(b)) (Step 2) Step of placing (mounting) the base 57 with each shaft body 58 thereon on the weight 55 (Fig. 7(c)) (Step 3) Step of integrally fixing the base 57 to the weight 55 using (re-attaching) the stopper 60 (Fig. 7(d)) (Step 4) Step of placing (mounting) the sub-weight 64 on the base 57 while inserting each shaft body 58 through each hole (Fig. 7(e)) (Step 5) Step of attaching the fixture 59 to each shaft body 58 protruding from the sub-weight 64 (Fig. 7(f))

[0046] According to the second method, there is an effect that the risk of the sub-weight 64 falling off during the configuration of the counterweight 5 can be reduced.

[0047] Note that Step 1 is a step that is performed when it is found that the total weight is still insufficient after the counterweight 5 has been configured once, or when it becomes necessary to increase the total weight of the counterweight 5 due to the addition of some configuration to the cage 3 side later. When a new counterweight 5 is installed, Step 1 is as follows. Steps 2 and later are the same. (Step 1) Step of loading the weight 55 (Fig. 7(b))

[0048] As described above, according to the elevator 1 and the counterweight 5 according to the present embodiment, the sub-weight 64 is loaded in the upper space of the weight 55 at the height positions of the left and right open portions 50c, 50c. Therefore, it is possible to eliminate wasteful space and increase the loading capacity (as a result, the total weight of the counterweight 5).

[0049] Further, according to the elevator 1 and the counterweight 5 according to the present embodiment, the sub-weight 64 has an overall length shorter than the interval between the pair of vertical frames 50, 50. Therefore, the sub-weight 64 can be arranged on the base 57 without interfering with the stopper 60.

[0050] Note that the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the gist of the present invention.

[0051] In the above embodiment, weights 55A and 55B of two types of thicknesses are used. However, the present invention is not limited to this. As described above, since the sub-weight 64 also has an aspect of weight adjustment, as shown in FIG. 8, only the weight 55A may be used without using the weight 55B for weight adjustment.

[0052] Also, in the above embodiment, a sub-weight 64A having the same thickness as the weight 55A is used. However, the present invention is not limited to this. As shown in FIG. 9, a sub-weight 64 (for example, a sub-weight 64B having the same thickness as the weight 55B) having a thickness smaller than the thickness of the weight 55A may be used. Conversely, a sub-weight 64 having a thickness larger than the thickness of the weight 55A may be used. In this case, the sub-weight 64 may be one instead of a plurality.

[0053] Also, in the above embodiment, a sub-weight 64A of one type of thickness is used. However, the present invention is not limited to this. As shown in FIG. 10, a combination of two types of sub-weights, the sub-weight 64A of FIGS. 5 and 8 and the sub-weight 64B of FIG. 9, may be used.

[0054] Further, in the above-described embodiment, the open portion 50c is provided in each of the left and right vertical frames 50, 50. However, the present invention is not limited to this. The open portion 50c may be provided only in any one of the vertical frames 50. Even with this structure, by obliquely placing the weight 55 and the base 57 on a horizontal plane and inserting them between the pair of vertical frames 50, 50, the weight 55 and the base 57 can be inserted between the pair of vertical frames 50, 50 while remaining horizontal.

[0055] Further, in the above-described embodiment, the base 57 is obtained by subjecting the weight 55A to female screw processing. However, the present invention is not limited to this. The base 57 may be manufactured separately from the weight 55. In this case, the base 57 may have a thickness smaller than the thickness of the weight 55A. Conversely, the base 57 may have a thickness larger than the thickness of the weight 55A. Also, the base 57 may be made of a different material.

[0056] Further, in the above-described embodiment, the shaft body 58 is detachably attached to the base 57. However, the present invention is not limited to this. The shaft body 58 may be integrated with the base 57 by welding or the like.

[0057] Further, in the above-described embodiment, two engaging holes 57c of the base 57, the shaft body 58, and the insertion holes 64c of the sub-weight 64 are provided respectively. However, the present invention is not limited to this. These may each be three or more.

[0058] In the above-described embodiment, the insertion hole 64c of the sub-weight 64 is a round hole, that is, a hole whose entire circumference around the axis is closed. However, the present invention is not limited to this. Even if at least one insertion hole 64c is assumed to be a round hole from the viewpoint of preventing the sub-weight 64 from falling off, the other insertion holes 64c may be notch holes, that is, slit holes (as an example, holes having an arc shape centered on a round hole or a linear slit including the same) in which a part reaches the outer edge of the sub-weight 64 and is opened.

[0059] In the above-described embodiment, the elevator 1 of the so-called machine roomless type (machine roomless type) in which the hoisting machine 42 is disposed in the hoistway 2 has been described. However, the present invention is not limited to this. Needless to say, the present invention can also be applied to an elevator of the so-called machine room type in which the hoisting machine is disposed in the machine room above the hoistway.

[0060] In the above-described embodiment, the elevator 1 of the so-called 2:1 roping type in which both ends 44a and 44b of the main rope 44 are fixed to the upper part of the hoistway 2 and the main rope 44 is wound around the car sheave 40 and the counterweight sheave 53 so that the main rope 44 is connected to the car 3 and the counterweight 5 has been described. However, the present invention is not limited to this. Needless to say, the present invention can also be applied to an elevator of the so-called 1:1 roping type in which one end of the main rope is fixed to the car and the other end of the main rope is fixed to the counterweight.

Description of Reference Numerals

[0061] 1... elevator, 2... hoistway, 20... guide rail, 21... guide rail, 3... car, 30... vertical frame, 31... guide body, 4... drive mechanism, 40... car sheave, 41... first overhead sheave, 42... hoisting machine, 43... second overhead sheave, 44... main rope, 44a... one end, 44b... the other end, 5... counterweight, 50... vertical frame, 50a... flange, 50b... web, 50c... opening (notch), 51... guide body, 52... upper frame, 53... counterweight sheave, 54... lower frame, 55... weight, 55A... weight (standard type), 55B... weight (thin type), 55a... body, 55b... end, 56... sub-weight fixing body, 57... base, 57a... body, 57b... end, 57c... engagement hole (female screw), 58... shaft body (fully threaded bolt), 59... fixture (nut, washer, spring washer), 60... stopper, 61... bracket, 61a... engagement hole (female screw), 62... shaft body (hexagon bolt), 63... fixture (nut), 64... sub-weight, 64A... sub-weight (standard type), 64B... sub-weight (thin type), 64a... body, 64c... insertion hole

Claims

1. A pair of vertical frames that are arranged opposite to each other with a gap in the left - right direction, each having a pair of flanges along the up - down direction, and at least one of them having an opening at a position on the upper side of the flange; A weight that has a total length longer than the gap between the pair of vertical frames, is arranged between the pair of vertical frames such that each end is inserted between the pair of flanges, and is loaded to a height position that does not reach the opening; A sub - weight that has a total length shorter than the gap between the pair of vertical frames, is arranged on the weight such that each end does not hang on the flange, and is loaded to the height position of the opening or a height position higher than this; And a fixing means for the sub - weight The counterweight of an elevator.

2. The sub - weight has holes penetrating in the up - down direction at least at two positions, The fixing means for the sub - weight is A base that has a total length longer than the gap between the pair of vertical frames, is arranged on the weight such that each end is inserted between the pair of flanges, is integrally fixed with the weight, and on which the sub - weight is arranged; A shaft body that protrudes upward from the base and is inserted through each hole of the sub - weight; And a fixture attached to each shaft body protruding from the sub - weight The counterweight of the elevator according to Claim 1.

3. The fixing means of the base is a stopper attached to each vertical frame and abutting against the base from above The counterweight of the elevator according to Claim 2.

4. A method for constructing the counterweight according to Claim 2 or Claim 3, comprising: A step of loading the weight, or a step of preparing a counterweight from which the weight fixing means has been removed once it is constructed; A step of arranging the base before attaching each shaft body on the weight; A step of integrally fixing the base with the weight using the fixing means; A step of arranging the sub - weight on the base such that each hole of the sub - weight coincides with the shaft body attachment location of the base; A step of inserting each shaft body through each hole of the sub - weight and attaching it to the base; And a step of attaching the fixture to each shaft body protruding from the sub - weight A method for constructing the counterweight of an elevator.

5. A method for constructing the counterweight according to Claim 2 or Claim 3, comprising: A step of loading the weight, or a step of preparing a counterweight from which the weight fixing means has been removed once it is constructed; The step of placing the base with each shaft body on the weight; The step of integrally fixing the base to the weight using fixing means; The step of placing the sub-weight on the base while inserting each shaft body through each hole; The step of attaching the fixture to each shaft body protruding from the sub-weight, and comprising A method for configuring the counterweight of an elevator.

6. A car that moves up and down in a hoistway, A counterweight that is connected to the car via a main rope and moves up and down in the hoistway in conjunction with the movement of the car, the counterweight according to any one of claims 1 to 3, and comprising An elevator.

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