Weight frame model and method for determining whether or not weight frame can be carried in using weight frame model

Abstract

To provide a weight frame model used for carrying-in simulation in a job site for carrying in a weight frame of an elevator.SOLUTION: The weight frame model 30 is used at a site where the weight frame 20 of the elevator is carried in. The absorbent article has a rectangular shape in front view extending longer in the longitudinal direction than in the lateral direction, and is stretchable at least in the longitudinal direction. When the weight frame model 30 is formed in a square frame shape and includes a vertical frame 31 extending in the vertical direction and a horizontal frame 32 extending in the horizontal direction, the vertical frame 31 is provided with a scale for length measurement.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to a weight frame model used in a preliminary survey for elevator renovation work and a method for determining whether or not a weight frame can be carried in using the weight frame model. [Background technology]

[0002] Generally, the weight frame of an elevator with a small load capacity is formed by fixing an upper frame, a vertical frame, and a lower frame that make up the weight frame with bolts and nuts, respectively, to form the frame shape.

[0003] Patent Document 1 discloses a weight frame to be installed in an elevator. According to Patent Document 1, the weight frame includes an upper frame, a lower frame, and a pair of vertical frames, and each member is attached to the other with a bolt and a nut. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent No. 6508438 Summary of the Invention [Problem to be solved by the invention]

[0005] When installing a weight frame at a site, in which each component is secured with a bolt and nut as described in Patent Document 1, each component is typically transported to the site in a disassembled state, and then the weight frame is completed by fastening each component with a bolt and nut at the installation location.

[0006] On the other hand, weight frames for elevators with large load capacities are secured by welding each component together to ensure strength. Weight frames secured by welding are typically transported to the construction site after each component is welded together in a factory in advance. Each component of a welded weight frame is made of steel, such as iron. Furthermore, to balance the high-load elevator car, the weight frame must be loaded with many weight pieces, resulting in a high weight frame height. This makes a welded weight frame very heavy. Because heavy machinery cannot be used inside an operating building, multiple workers are required to transport such a weight frame. When installing a welded weight frame on-site, it is necessary to measure the dimensions of the designated locations along the route along which the welded weight frame will be transported and ensure a clear route for the weight frame.

[0007] In a preliminary survey for bringing in the weight frame, workers measure the height and width of the entrance and the height, width, and depth of the access route. If the access route from the entrance to the elevator shaft is curved or narrow, the weight frame will need to be tilted to maneuver it. In this case, it is necessary to measure various points, such as the diagonal and oblique dimensions of the route, to check for interference with the route.

[0008] Furthermore, when measuring the dimensions of multiple predetermined locations along the weight frame delivery path as described above, even if measurements are made using known means (such as a tape measure), measurement mistakes and errors are unavoidable. If an attempt is made to actually deliver a weight frame that was determined to be deliverable based on erroneous measurement results, the weight frame may interfere with the delivery path, and installation work may have to be suspended. [Means for solving the problem]

[0009] The weight frame model of the present invention is a weight frame model used at a site where elevator weight frames are delivered, and is characterized by having a rectangular shape when viewed from the front that is longer vertically than horizontally, and being extendable at least vertically.

[0010] The method of the present invention for determining whether a weight frame can be brought in is a method for determining whether a weight frame can be brought in along a weight frame delivery route using a weight frame model, and is characterized by including the steps of assembling the weight frame model to the same dimensions as the weight frame, and maneuvering the weight frame model along the weight frame delivery route to determine whether the weight frame can be brought in. [Effects of the Invention]

[0011] With the weight frame model of the present invention, it is possible to check for interference along the weight frame's carry-in route and simulate delivery by maneuvering a weight frame model of the same dimensions as the weight frame to be delivered along the carry-in route, without having to measure the dimensions of multiple locations along the route. In other words, it is possible to visually determine on the spot whether the weight frame can be delivered, without having to measure specified locations along the carry-in route, thereby reducing the effort required for the preliminary investigation. [Brief explanation of the drawings]

[0012] [Figure 1] FIG. 2 is a diagram illustrating a schematic configuration for explaining an elevator mechanism. [Figure 2] FIG. 1 is a perspective view of a weight frame carry-in route, illustrating a state in which a weight frame model is used, which is an example of an embodiment. [Figure 3] 1 is a perspective view of the appearance of a weight frame model according to an embodiment of the present invention; [Figure 4] FIG. 4 is a cross-sectional view taken along line AA in FIG. [Figure 5] FIG. 2 is an enlarged view of a main part of a weight frame model as an example of an embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0013] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Note that the preferred embodiments described below are merely examples, and the present invention is not limited to the following preferred embodiments.

[0014] Fig. 1 is a diagram showing a schematic configuration for explaining an elevator mechanism. As shown in Fig. 1, an elevator comprises a car 1 and a counterweight 2. Specifically, the car 1 and the counterweight 2 are installed in a bucket-like arrangement in a hoistway 3, which is a long vertical space through which the elevator travels, and are connected to both ends of a main rope 4. The counterweight 2 comprises a plurality of weight pieces 5 and a weight frame 20 for loading and holding the weight pieces 5.

[0015] The main rope 4 is wound around a hoisting machine 6 and a deflecting sheave 7. The hoisting machine 6 and the deflecting sheave 7 are installed in a machine room 8 provided above the hoistway 3. When the hoisting machine 6 winds up or pays out the main rope 4, the car 1 and the counterweight 2, which includes a weight frame 20 and a plurality of weight pieces 5, move up and down within the hoistway 3 relative to one another.

[0016] The weight frame 20 has a rectangular frame structure for loading and holding multiple weight pieces 5. The weight frame 20 is formed, for example, from an alloy whose main component is iron. The weight frame 20 includes an upper frame forming the upper edge, a pair of vertical frames extending in the vertical direction, and a lower frame forming the lower edge. The upper ends of the pair of vertical frames are fixed to both ends of the upper frame extending horizontally, and the lower ends of the pair of vertical frames are fixed to both ends of the lower frame extending horizontally.

[0017] The overall weight of the counterweight 2, i.e., the total weight of the weight frame 20 and the multiple weight pieces 5 loaded into the weight frame 20, is designed to be the sum of the weight of the car 1 and the weight obtained by multiplying the rated load capacity by 1 / 2. In other words, for elevators with a large load capacity, many weight pieces 5 must be loaded into the weight frame 20, and the height of the weight frame 20 also increases. Each component (upper frame, vertical frame, lower frame) of the weight frame 20 of an elevator with a large load capacity is fixed together by welding to ensure strength, making it very heavy.

[0018] Next, the carry-in path 11 for the weight frame 20 and the weight frame model 30 will be described with reference to Fig. 2. Fig. 2 is a perspective view of the carry-in path for the weight frame, showing the weight frame model in use as an example of an embodiment.

[0019] When installing an elevator in a building under construction, if the walls of the floors and the like have not yet been erected, it is relatively easy to carry the weight frame 20 of the car 1 and counterweight 2 into the hoistway 3. On the other hand, when installing a new weight frame 20 in the hoistway 3 during renovation work, the weight frame 20 must be carried in from the delivery entrance 10 through the delivery route 11 set up on the floor that is in operation, and then installed in the hoistway 3.

[0020] As shown in FIG. 2, in the past, when transporting a weight frame 20 (see FIG. 1) during renovation work, it was necessary to measure in advance not only the width dimension W and height dimension H of the service entrance 10 but also the depth dimension A, width dimension B, and height dimension C of the service route 11. If the service route 11 is curved, it was necessary to additionally measure the depth dimension A' and width dimension B' at the end of the bend (if the height dimension C of the service route 11 is changed, the new height dimension C' (not shown)), and the diagonal dimension D of the bent portion. In this preliminary survey, a worker 12 actually transports a weight frame model 30 through the service entrance 10 and manipulates the weight frame model 30 along the service route 11, thereby visually confirming whether or not the weight frame 20 will interfere with the service entrance 10 and the service route 11. In other words, by using the weight frame model 30, it is possible to simulate the presence or absence of interference by the weight frame 20 and how to handle the weight frame 20 without measuring specific locations along the service route 11.

[0021] Specifically, the weight frame model 30 is used in advance surveys at the site where a new weight frame 20 is to be delivered during elevator renovation work. The weight frame model 30 has a rectangular shape when viewed from the front, with the vertical direction being longer than the horizontal direction. Because the weight frame model 30 has a shape similar to the weight frame 20, which has a rectangular frame structure, it is possible to accurately determine whether there is interference at the service entrance 10 and the service route 11.

[0022] The weight frame model 30 is extendable at least in the vertical direction. While the horizontal and depth lengths of the weight frame 20 are standardized, the vertical length of the weight frame 20 varies depending on the weight of the car 1, the rated load capacity, and the number of weight pieces 5 loaded into the weight frame 20. If the weight frame model 30 is extendable at least in the vertical direction, one type of weight frame model 30 can accommodate many weight frames 20.

[0023] Next, the weight frame model 30 will be described in more detail with reference to Figures 3 to 5. Figure 3 is an external perspective view of the weight frame model, which is an example of an embodiment. Figure 4 is a cross-sectional view taken along line AA in Figure 3. Figure 5 is an enlarged view of a main part of the weight frame model, which is an example of an embodiment.

[0024] As shown in FIG. 3 , the weight frame model 30 is formed in a rectangular frame shape, similar to the weight frame 20. In this case, the weight frame model 30 includes a vertical frame 31 extending vertically and a horizontal frame 32 extending horizontally. Materials for the vertical frame 31 and the horizontal frame 32 include, but are not limited to, resin, cardboard, and lightweight metals such as aluminum. A weight frame 20 made by welding together components formed using alloys or the like is very heavy and difficult to transport. In contrast, a weight frame model 30 made of aluminum or the like is lightweight, making it very easy to simulate delivery along the delivery route 11 during preliminary surveys.

[0025] The vertical frame 31 of the weight frame model 30 is configured to be extendable. For example, the vertical frame 31 may be configured as a frame that can be extended or contracted to various lengths by arranging multiple frame members in a straight line to the required length and fixing each frame member to form an integrated vertical frame 31.

[0026] The vertical frame 31 and horizontal frame 32 of the weight frame model 30 may be L-shaped steel. As will be described in detail later, in this case, assembling the vertical frame 31 and horizontal frame 32 can be performed more easily. The vertical frame 31 further includes bolt holes 33 for fixing the linearly arranged frame members at predetermined positions. The bolt holes 33 are preferably elongated holes. The length of the frame members constituting the vertical frame 31 is not particularly limited as long as it can reproduce the vertical length of the weight frame 20, but it is preferably a length that makes it easy for workers to work with. The vertical frame 31 can be fixed with bolts and nuts via the bolt holes 33, with frame members arranged at predetermined lengths based on the length measurement scale described later in FIG. 5. The fixed frame members constitute the vertical frame 31 fixed as a single unit.

[0027] The L-shaped steel beams that make up the vertical frame 31 and horizontal frame 32 of the weight frame model 30 are arranged so that their angled corners form the outer edge of the weight frame model 30. In this case, the weight frame model 30 can reproduce the outer shape of the weight frame 20, which has a rectangular frame structure.

[0028] The length (T) from the angled corner of the L-shaped steel to the bottom end of the surface corresponding to the side of the weight frame model 30, i.e., the thickness of the vertical frame 31 and horizontal frame 32 in the weight frame model 30, may be the maximum value among the thicknesses of several types of weight frame 20 available. In the delivery simulation, if the weight frame 20 can be handled with its maximum thickness, it can be determined that a weight frame 20 whose actual thickness is thinner than this will not interfere with the delivery path 11 and can be delivered into the hoistway 3.

[0029] The vertical frame 31 of the weight frame model 30 may be, for example, L-shaped steel beams of different sizes arranged in a nested manner. Specifically, the vertical frame 31 of the weight frame model 30 has, for example, a base end portion 34, an intermediate portion 35, and a tip end portion 36 (L1>L2>L3). By using L-shaped steel beams with a nested structure in this way, the frame members can be carried together as a unit when shrunk, making the preliminary investigation easier.

[0030] Specifically, as shown in Fig. 4, when the frame materials of the vertical frame 31 form a nested structure, the L-shaped steel corresponding to the base end 34 has a hook portion 37 bent at its end. In this case, the hook portion 37 of the base end 34 functions as a slide rail that slidably holds the intermediate portion 35. Similarly, the intermediate portion 35 may also have a hook portion 38 bent at its end. In this case, the hook portion 38 of the intermediate portion 35 also functions as a slide rail that slidably holds the tip end 36.

[0031] The lengths of the base end 34, middle portion 35, and tip end 36 that make up the vertical frame 31 are not particularly limited as long as they can reproduce the vertical length of the weight frame 20, but are preferably lengths that are easy for workers to work with. It is also possible to use multiple vertical frames 31, each consisting of a base end 34, middle portion 35, and tip end 36, connected together. Specifically, multiple vertical frames 31 can be connected together by fastening the tip end 36 of the first vertical frame 31 and the base end 34 of the second vertical frame 31 with bolts and nuts via bolt holes 33 that secure each frame member of the vertical frame 31 at a predetermined length.

[0032] The vertical frame 31 and the horizontal frame 32 are preferably connected to each other in a separable manner. Specifically, the horizontal frame 32 has bolt holes 33, just like the vertical frame 31, which are aligned with the bolt holes 33 of the vertical frame 31 to form bolt insertion holes. The vertical frame 31 and the horizontal frame 32 are fixed with bolts and nuts through these bolt insertion holes. Alternatively, the vertical frame 31 and the horizontal frame 32 may be connected by one having a protrusion and the other having a locking portion that locks onto the protrusion. When the frames are connected to each other in a separable manner, the separated frames can be assembled at the renovation work site, making transportation to the site easier than when they are fixed in a frame shape.

[0033] As shown in FIG. 5 , the vertical frame 31 (bolt holes 33 are not shown) is provided with a scale for measuring length. The minimum unit of the length scale is, for example, 10 mm. The length of the scale displayed on each frame member constituting the vertical frame 31 is not particularly limited, but it is preferably a length that is easy for workers to work with. To improve workability, auxiliary scales may be added in 50 mm increments. Using the length scale, workers can assemble the vertical frame 31 of the weight frame model 30 to the same length as the vertical length of the weight frame 20. Because the weight frame model 30 is used in place of the weight frame 20 to check whether the weight frame 20 will interfere with the delivery route 11, it is preferable that the weight frame model 30 be assembled to the same dimensions as the vertical length of the weight frame 20.

[0034] The vertical frame 31 has length measurement scales on the base end 34, intermediate portion 35, and tip end 36, which are arranged in a nested manner. Specifically, the base end 34 has length measurement scales from the starting end to the end on the side where it is connected to the intermediate portion 35. The intermediate portion 35 has length measurement scales on the part that is exposed when the intermediate portion 35 and the base end 34 are fixed together by inserting bolts into the bolt holes 33 and fixing them with nuts when the intermediate portion 35 is fully extended relative to the base end 34. In other words, length measurement scales are not provided on the part that is included in the base end 34. The same applies to the part of the tip end 36 where length measurement scales are provided.

[0035] The horizontal frame 32 may also be configured to be extendable and have a scale for measuring length. The horizontal frame 32 may be configured so that each frame member assembled to a predetermined length based on the scale for measuring length is fixed with a bolt and nut through the bolt holes 33. The horizontal length of the weight frame 20 is standardized, and there is less variation in dimensional standards compared to the vertical length. However, by configuring the horizontal frame 32 to be extendable and having a scale for measuring length, it is possible to more faithfully reproduce a weight frame model 30 with the same dimensions as the weight frame 20. Configuring the vertical frame 31 and horizontal frame 32 to be extendable makes the weight frame model 30 easier to transport, reducing the burden on workers performing the delivery simulation.

[0036] The horizontal frame 32 may be configured to be extendable and scalable by forming a nested structure similar to the vertical frame 31. The horizontal frame 32 can be assembled to the same dimensions as the horizontal length of the weight frame 20 based on a length measurement scale. Similar to the vertical frame 31, the horizontal frame 32 may have bolt holes 33, be nested, and be configured so that each frame member assembled to a predetermined length is secured with a bolt and nut. In this case, a weight frame model 30 can be formed that reproduces the vertical and horizontal lengths of the weight frame 20. For example, if the horizontal frame 32 includes frame members having the same shape as the base end portion 34, middle portion 35, etc., which are frame members that constitute the vertical frame 31, the frame members can be standardized, further reducing the labor required to assemble the weight frame model 30.

[0037] Next, a detailed description will be given of a method for determining whether or not the weight frame 20 can be carried in using the weight frame model 30. The method for determining whether or not the weight frame 20 can be carried in using the weight frame model 30 comprises the following steps. (1) A process of assembling a weight frame model 30 to the same dimensions as the weight frame 20. (2) A process of maneuvering the weight frame model 30 along the weight frame 20 delivery path 11 to determine whether or not the weight frame 20 can be delivered.

[0038] In order to use the weight frame model 30 to determine whether the weight frame 20 can be carried into the carry-in route 11, first, the weight frame model 30 is assembled to have the same dimensions as the weight frame 20. Specifically, the vertical length of the weight frame 20 is measured, and the vertical frame 31 of the weight frame model 30 is adjusted to the same dimensions. If the frame members of the vertical frame 31 form a nested structure, the base end 34, middle portion 35, and tip end 36, which are arranged in a nested manner, are slid and extended based on the length measurement scales provided on the vertical frame 31, to adjust the length of the vertical frame 31.

[0039] The vertical frame 31 of the weight frame model 30 is formed by fixing each frame member of the vertical frame 31, which has been adjusted to a predetermined length. Specifically, bolts are inserted into bolt insertion holes formed by aligning the bolt holes 33 of each frame member of the vertical frame 31, and each frame member arranged in a nested manner is fixed with a nut. If a single vertical frame 31 unit consisting of a base end 34, an intermediate portion 35, and a tip end 36 cannot reproduce the vertical length of the weight frame 20, the weight frame model 30 is assembled by connecting multiple vertical frame 31 units and adjusting them to have the same dimensions as the vertical length of the weight frame 20.

[0040] In the process of assembling the weight frame model 30, the horizontal frame 32 may also be configured to be extendable. If the horizontal frame 32 is configured to be extendable, the horizontal length of the weight frame 20 is measured, and the horizontal frame 32 of the weight frame model 30 is adjusted to the same dimensions. By adjusting not only the vertical frame 31 of the weight frame model 30 but also the horizontal frame 32 to the same dimensions as the weight frame 20, it is possible to faithfully reproduce the size of the weight frame 20 that will actually be transported.

[0041] After adjusting the vertical frame 31 and the horizontal frame 32 to their respective predetermined lengths, the frames are connected to assemble the weight frame model 30. Specifically, bolts are inserted into bolt insertion holes formed by joining the bolt holes 33 provided in the vertical frame 31 and the horizontal frame 32, and the ends of each frame are fixed with nuts, completing the assembly of the weight frame model 30.

[0042] Next, a weight frame model 30 assembled to the same dimensions as the weight frame 20 is moved around the weight frame 20 carry-in route 11 to determine whether or not the weight frame 20 can be carried in. Specifically, for example, two workers each hold the horizontal frames 32 of the weight frame model 30, whose vertical frames 31 are arranged horizontally, and move the weight frame model 30 around.

[0043] Take as an example a case where the depth dimension A (see FIG. 2) of the carry-in route 11 is longer than the length dimension of the vertical frame 31 of the weight frame model 30, and the width dimension B (see FIG. 2) of the carry-in route 11 is longer than the length dimension of the horizontal frame 32 of the weight frame model 30. In such a carry-in route 11, if there is a straight line from the service entrance 10 to the hoistway 3, a worker can carry in the weight frame model 30 by holding the horizontal frame 32 of the weight frame model 30 horizontally. If the weight frame model 30 can be carried into the hoistway 3 without interfering with any part of the carry-in route 11 even when held horizontally and handled, it is determined that the weight frame model 30 can be carried in.

[0044] Next, consider an example in which the width dimension B of the carry-in route 11 (see FIG. 2) is shorter than the length dimension of the horizontal frame 32 of the weight frame model 30, and the height dimension C of the carry-in route 11 is longer than the length dimension of the horizontal frame 32 of the weight frame model 30. In this case, a worker can determine whether there will be any interference with the carry-in route 11 by holding the horizontal frame 32 of the weight frame model 30 diagonally or vertically and maneuvering it. If the weight frame model 30 can be carried into the elevator shaft 3 without interfering with any part of the carry-in route 11, it is determined that the weight frame 20 can be carried in.

[0045] Diagonal distances such as the diagonal dimension D of the delivery route 11 are prone to error depending on the worker's measuring technique, even when measured with a tape measure or the like. A delivery simulation using the weight frame model 30 in a preliminary survey is effective in that it does not require the measurement of such diagonal distances and allows the worker to visually determine whether there will be interference and whether delivery is possible by simply maneuvering the weight frame model 30.

[0046] Even if the carry-in route 11 is curved, the worker can check whether there is interference between the carry-in route 11 and the weight frame model 30 by adjusting the orientation of the horizontal frame 32 of the weight frame model 30 and maneuvering it without measuring the dimensions of the specified locations in advance.

[0047] If the weight frame model 30 interferes with the carry-in route 11 even when the worker adjusts the orientation of the horizontal frame 32 of the weight frame model 30, it is determined that the weight frame model 30 cannot be carried in via the set carry-in route 11. In this case, by moving the weight frame model 30 along a different route, a new carry-in route 11 can be considered and determined.

[0048] As described above, by using the weight frame model 30 having the above configuration, it is possible to visually determine whether the weight frame 20 is suitable for the carry-in route 11 without the need to measure predetermined locations in advance when carrying in the weight frame 20. Furthermore, because the weight frame model 30 is extremely light compared to the actual weight frame 20, a small number of workers can adequately conduct a preliminary investigation when handling the weight frame model 30 along the carry-in route 11.

[0049] The above embodiment can be modified as needed without impairing the object of the present invention. For example, the weight frame model 30 may be configured to be expandable and contractable in the vertical direction by a bellows structure. Specifically, the weight frame model 30 may be configured in a rectangular tubular shape, and may be configured to be expandable and contractable in the vertical direction by a bellows structure in which large diameter portions and small diameter portions are alternately connected in the vertical direction.

[0050] The weight frame model 30 may be configured to include a plurality of slidably connected plate members and to be extendable and contractible in the vertical direction. [Explanation of symbols]

[0051] 1 car, 2 counterweight, 3 elevator shaft, 4 main rope, 5 weight piece, 6 hoist, 7 deflector, 8 machine room, 10 entrance, 11 access route, 20 weight frame, 30 weight frame model, 31 vertical frame, 32 horizontal frame, 33 bolt hole, 34 base end, 35 middle section, 36 tip section, 37, 38 hook section

Claims

1. A weight frame model used at a site where an elevator weight frame is delivered, It has a rectangular shape in front view that is longer in the vertical direction than in the horizontal direction, A weight frame model that is extendable at least vertically.

2. The weight frame model is formed in a rectangular frame shape, A vertical frame extending in the vertical direction; a horizontal frame extending in the horizontal direction; Including, The weight frame model of claim 1 , wherein the vertical frame includes a scale for measuring length.

3. 3. The weight frame model according to claim 2, wherein the vertical frame and the horizontal frame are separably connected to each other.

4. 3. The weight frame model according to claim 2, wherein the vertical frame and the horizontal frame are L-shaped steel beams.

5. 3. The weight frame model according to claim 2, wherein the horizontal frame is configured to be extendable and has a scale for measuring length.

6. A method for determining whether or not a weight frame can be carried in along a weight frame carrying-in route using the weight frame model according to any one of claims 1 to 5, comprising: Assembling the weight frame model to the same dimensions as the weight frame; a step of maneuvering the weight frame model along a weight frame carry-in route to determine whether or not the weight frame can be carried in; Methods for determining whether or not items can be brought in, including:

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