Elevator counterweight device

Abstract

The present invention provides an elevator counterweight device that can improve the workability when loading counterweights onto the counterweight frame. [Solution] The elevator counterweight device according to the embodiment includes a weight frame including a lower beam and an upper beam, a plurality of first vertical weights stacked in a first direction, and a first pressing member for holding down the first vertical weights. The weight frame includes a first locking beam located between the lower beam and the upper beam. The first vertical weights include a pair of first lower engaging portions that engage with the lower beam to restrict the movement of the lower part of the first vertical weight in a second direction, and a first upper engaging portion that engages with the first locking beam to restrict the movement of the upper part of the first vertical weight in a second direction. The first pressing member includes a first upper pressing portion that holds down the plurality of first vertical weights from above, and a pair of first lateral pressing portions that hold down the plurality of first vertical weights from both sides.

Description

Technical Field

[0001] The embodiment relates to a counterweight device of an elevator.

Background Art

[0002] An elevator device is known in which a car and a counterweight are connected via a main rope, and the car is raised and lowered by winding up the main rope. The counterweight is configured by mounting a plurality of weight bodies on a weight frame.

[0003] When the weight bodies are mounted on the weight frame, they are stacked inside the weight frame in a horizontal state by manual operation of an operator. Therefore, there is a possibility that the operator's hand may be caught between the weight bodies. Further, the weight bodies are inserted through a notch formed in the upper part of the vertical beam. Therefore, there is also a possibility that the weight body inserted into the notch may accidentally fall. Furthermore, since the vertical movement distance of the weight bodies in the weight frame is long, the operator stands up when inserting the weight bodies into the notch, and after inserting them into the notch, the operator squats to place the weight bodies on the lower beam. Therefore, the operator's physical burden increases due to repeated standing up and squatting, and workability deteriorates.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0005] An object of the embodiment is to provide an elevator counterweight device capable of improving workability when mounting a weight body on a weight frame.

Means for Solving the Problems

[0006] The elevator counterweight device according to this embodiment includes a counterweight frame comprising a lower beam extending in a first direction, a pair of vertical beams extending upward from both ends of the lower beam, and an upper beam extending in the first direction from the upper end of one vertical beam to the upper end of the other vertical beam; a plurality of first vertical counterweights supported by the counterweight frame and stacked in the first direction; and a first retaining member for holding down the first vertical counterweights. The counterweight frame includes a first locking beam extending in the first direction, located between the lower beam and the upper beam. In a plan view, the direction perpendicular to the first direction is defined as the second direction. The first vertical counterweights include a pair of first lower engaging parts that engage with the lower beam to restrict the movement of the lower part of the first vertical counterweight in the second direction, and a first upper engaging part that engages with the first locking beam to restrict the movement of the upper part of the first vertical counterweight in the second direction. The first pressing member includes a first upper pressing portion that extends in a first direction and presses down on a plurality of first vertically positioned weights from above, and a pair of first lateral pressing portions that press down on the plurality of first vertically positioned weights from both sides in the first direction. [Brief explanation of the drawing]

[0007] [Figure 1] Figure 1 is a schematic cross-sectional view showing an elevator system according to this embodiment. [Figure 2] Figure 2 is a perspective view showing a counterweight device according to this embodiment. [Figure 3] Figure 3 is a front view showing the lower part of the counterweight device shown in Figure 2. [Figure 4] Figure 4 is a perspective view showing the first vertically positioned cone shown in Figure 2. [Figure 5] Figure 5 is an enlarged perspective view showing the lateral clamping portion shown in Figure 4. [Figure 6] Figure 6 is a perspective view illustrating the mounting method of the first vertically mounted weight shown in Figure 2. [Figure 7] Figure 7 is a perspective view illustrating the mounting method of the first vertically mounted weight, following Figure 6. [Figure 8] Figure 8 is a perspective view illustrating the mounting method of the first vertically mounted weight, following Figure 7. [Figure 9] Figure 9 is a perspective view showing a modified example of the first vertically oriented cone shown in Figure 3. [Figure 10] Figure 10 is a partial front view showing a modified example of the weight frame shown in Figure 4. [Figure 11] Figure 11 is a perspective view showing a modified example of the counterweight device shown in Figure 2. [Figure 12] Figure 12 is a perspective view showing another variation of the counterweight device shown in Figure 2. [Figure 13] Figure 13 is a schematic diagram showing the arrangement of the first and second vertically positioned cones shown in Figure 12. [Modes for carrying out the invention]

[0008] The counterweight device of the elevator in this embodiment will be described below with reference to the drawings. First, the elevator device according to this embodiment will be described.

[0009] As shown in Figure 1, the elevator system 1 comprises a car 3 and a counterweight 4 located within the hoistway 2. The car 3 and the counterweight 4 are connected via a main rope 5. The main rope 5 is wound around a traction sheave 6a and a deflection sheave 7 provided on the hoisting machine 6. The car 3 and the counterweight 4 move up and down as the hoisting machine 6 winds up the main rope 5. The car 3 moves up and down guided by a vertically extending car guide rail 8. The counterweight 4 moves up and down guided by a vertically extending counterweight guide rail 9. The hoisting machine 6 is installed in a machine room 10 located above the hoistway 2. A control panel 11 is installed in the machine room 10. The control panel 11 is a device that controls the entire elevator system 1, including the hoisting machine 6. For example, the control panel 11 controls the operation of the hoisting machine 6 in response to landing calls and car calls, and brings the elevator car 3 to the landing 12 of the registered floor.

[0010] It should be noted that the elevator system 1 is not limited to the configuration shown in Figure 1. For example, it may be a so-called machine-room-less elevator system. That is, the hoisting machine 6 and control panel 11 may be installed above the hoistway 2, etc., without providing a machine room 10.

[0011] Next, the counterweight device of the elevator according to the present embodiment (hereinafter, simply referred to as the counterweight device 20) will be described. The counterweight device corresponds to the counterweight 4 shown in FIG. 1. In the following description, the first direction is the lateral direction, the second direction is the front-rear direction, and the third direction is the vertical direction. The left-right direction when the counterweight device 20 is viewed from the front corresponds to the lateral direction. The front is the surface facing the inside of the hoistway 2. The front-rear direction is the direction orthogonal to the lateral direction in plan view, and the vertical direction is the direction orthogonal to the lateral direction and the front-rear direction.

[0012] As shown in FIG. 2, the counterweight device 20 includes a weight frame 30, guide rollers 40, a first vertically disposed weight body 50, a first pressing member 60, and a horizontally disposed weight body 70.

[0013] The weight frame 30 includes a lower beam 31, a pair of vertical beams 32, an upper beam 33, a first locking beam 34 (see FIG. 3), and a first support beam 35.

[0014] The lower beam 31 extends in the lateral direction. The lower beam 31 may be a U-shaped steel. The lower beam 31 may include a lower beam base portion 31a and a pair of lower beam projecting portions 31b projecting upward from the lower beam base portion 31a. The lower beam base portion 31a may be formed flat along the lateral direction and the front-rear direction. The lower beam projecting portions 31b may extend in the lateral direction. The pair of lower beam projecting portions 31b may be spaced apart in the front-rear direction.

[0015] The vertical beam 32 extends upward from both end portions of the lower beam 31 in the lateral direction. The vertical beam 32 may be fixed to the corresponding end portion of the lower beam 31. The vertical beam 32 may be a U-shaped steel. The vertical beam 32 may include a vertical beam base portion 32a and a pair of vertical beam projecting portions 32b projecting inward of the weight frame 30 from the vertical beam base portion 32a. The vertical beam base portion 32a may be formed flat along the vertical direction and the front-rear direction. The vertical beam projecting portions 32b project toward the first vertically disposed weight body 50 and may extend in the vertical direction. The pair of vertical beam projecting portions 32b are spaced apart in the front-rear direction.

[0016] The upper beam 33 extends horizontally from the upper end of one vertical beam 32 to the upper end of the other vertical beam 32. Both lateral ends of the upper beam 33 may be fixed to the corresponding vertical beams 32.

[0017] As shown in FIG. 3, the first locking beam 34 is positioned between the lower beam 31 and the upper beam 33. The first locking beam 34 extends horizontally from one vertical beam 32 to the other vertical beam 32, and both lateral ends of the first locking beam 34 may be fixed to the corresponding vertical beams 32. The first locking beam 34 is configured to lock the upper engaging portion 53 (see FIG. 4) of the first vertically placed weight 50. The first locking beam 34 may be formed flat along the horizontal and vertical directions at the portion where the first vertically placed weight 50 is locked (see FIGS. 6 to 8).

[0018] As shown in FIGS. 2 and 3, the first support beam 35 is positioned between the first locking beam 34 and the upper beam 33. The first support beam 35 extends horizontally from one vertical beam 32 to the other vertical beam 32, and both lateral ends of the first support beam 35 may be fixed to the corresponding vertical beams 32. The horizontal weight 70 is placed on the first support beam 35.

[0019] As shown in FIG. 2, the guide rollers 40 are provided at the four corners of the weight frame 30. When the weighing weight device 20 moves up and down, the guide rollers 40 roll on the corresponding weight guide rails 9, so that the weighing weight device 20 moves up and down along the weight guide rails 9.

[0020] Although not shown, a sheave around which the main rope 5 is wound may be provided on the upper beam 33 of the weight frame 30.

[0021] The first vertically placed weight 50 is supported by the weight frame 30. The first vertically placed weight 50 is placed vertically inside the weight frame 30 and is stacked in the horizontal direction. As shown in FIG. 4, the first vertically placed weight 50 is formed flat along the front - rear direction and the vertical direction.

[0022] The first vertically positioned weight 50 includes a lower engaging portion 51, an insertion opening 52, and an upper engaging portion 53. The lower engaging portion 51 of the first vertically positioned weight 50 corresponds to the first lower engaging portion, and the upper engaging portion 53 corresponds to the first upper engaging portion.

[0023] The lower engaging portion 51 is configured to engage with the lower beam 31 and restrict the movement of the lower part of the first vertical weight 50 in the front-rear direction. The first vertical weight 50 according to this embodiment includes two lower engaging portions 51. The two lower engaging portions 51 are spaced apart in the front-rear direction. The lower engaging portion 51 includes a lower notched recess 51a that extends upward from the lower edge of the first vertical weight 50. The lower notched recess 51a is configured so that the lower beam projection 31b (see Figure 2) of the corresponding lower beam 31 is inserted into it. Because the lower beam projection 31b, which extends laterally, is inserted into the lower notched recess 51a of the first vertical weight 50 that is aligned in the front-rear direction, the movement of the lower part of the first vertical weight 50 in the front-rear direction is restricted. The first vertical weight 50 is in contact with the lower beam projection 31b and is supported by the lower beam 31.

[0024] The insertion opening 52 is formed to extend in the front-rear direction from one side edge of the first vertically positioned weight 50 to the upper engaging portion 53. The insertion opening 52 is configured to allow the first locking beam 34 to be inserted. The vertical dimension of the insertion opening 52 is larger than the vertical dimension of the first locking beam 34.

[0025] The upper engaging portion 53 is configured to engage with the first locking beam 34 and restrict the front-rear movement of the upper part of the first vertical weight 50. The upper engaging portion 53 according to this embodiment may include an upper notched recess 53a extending upward from the insertion opening 52. The upper notched recess 53a is configured so that the first locking beam 34 is inserted into it. Since the first locking beam 34, which extends laterally, is inserted into the upper notched recess 53a of the first vertical weight 50, which is aligned in the front-rear direction, the upper part of the first vertical weight 50 is restricted from moving in the front-rear direction.

[0026] As shown in Figures 2 and 3, the first pressing member 60 is configured to press down on the first vertically positioned weight 50. More specifically, the first pressing member 60 includes an upper pressing portion 61 and a pair of lateral pressing portions 62. The upper pressing portion 61 of the first pressing member 60 corresponds to the first upper pressing portion, and the lateral pressing portions 62 correspond to the first lateral pressing portion.

[0027] The upper pressing portion 61 extends laterally and is configured to press down on a plurality of first vertically positioned weights 50 from above. The lateral ends of the upper pressing portion 61 may be attached to the corresponding vertical beams 32 or fixed thereto. The upper pressing portion 61 may be made of L-shaped steel. The upper pressing portion 61 may include an upper contact portion 61a that is formed flat along the lateral and front-rear directions. The upper contact portion 61a may contact the upper end of the first vertically positioned weights 50.

[0028] As shown in Figure 3, the pair of lateral pressing portions 62 are configured to press down on a plurality of first vertically positioned weights 50 from both sides in the lateral direction. Each lateral pressing portion 62 is attached to the upper pressing portion 61. The lateral pressing portion 62 may include a bracket 63 and a lateral contact portion 64. The bracket 63 is attached to the upper pressing portion 61. As shown in Figure 5, the bracket 63 may be attached to two mounting holes 61b formed in the upper pressing portion 61 using bolts (not shown). The bracket 63 may be formed in an L-shape when viewed in the front-rear direction.

[0029] As shown in Figure 5, the bracket 63 may be attachable to the upper retaining portion 61 at multiple positions in the lateral direction. More specifically, the upper retaining portion 61 may have multiple combinations of mounting holes 61b for attaching the bracket 63. This allows the mounting position of the bracket 63 to be adjusted according to the number of first vertically positioned weights 50. As an example, Figure 5 shows three sets of mounting holes 61b.

[0030] As shown in Figures 4 and 5, the lateral contact portion 64 is attached to the bracket 63. The lateral contact portion 64 abuts against the outermost first vertical weight 50. More specifically, the lateral contact portion 64 is attached to the bracket 63 via a retaining bolt 65. The retaining bolt 65 includes a head 65a located on the opposite side of the bracket 63 from the first vertical weight 50. The retaining bolt 65 passes through the bracket 63 and is fastened to the bracket 63 using a nut 66. The lateral contact portion 64 is attached to the side of the retaining bolt 65 facing the first vertical weight 50. The lateral contact portion 64 includes a nut 67 into which the tip of the retaining bolt 65 is screwed.

[0031] As described above, the lateral pressing portion 62 is configured to allow adjustment of the distance between the bracket 63 and the lateral contact portion 64. Therefore, the lateral contact portion 64 can be brought into contact with and pressed against the outermost first vertically mounted weight 50.

[0032] The horizontally positioned weights 70 are supported by the weight frame 30. As shown in Figures 2 and 3, the horizontally positioned weights 70 are placed horizontally inside the weight frame 30 and stacked vertically. The horizontally positioned weights 70 are formed flat along the horizontal and front-to-back directions. The horizontally positioned weights 70 are placed on the first support beam 35 described above and stacked. The horizontally positioned weights 70 are supported by the first support beam 35. Both ends of the horizontally positioned weights 70 engage with the vertical beam 32 in the horizontal direction. More specifically, the corresponding ends of the horizontally positioned weights 70 are inserted into the space between the pair of vertical beam projections 32b described above and engage with the vertical beam 32. In addition, the uppermost horizontally positioned weights 70 are pressed down from above by a pair of horizontally positioned retaining members 71. Notches (not shown) for inserting the horizontally positioned weights 70 may be formed in the upper part of the vertical beam 32.

[0033] Next, a method for mounting the first vertically positioned weight 50 on the weight frame 30 in the counterweight device 20 configured as described above will be explained with reference to Figures 6 to 8.

[0034] First, as shown in Figure 6, the first vertical weight 50 is inserted into the space between the lower beam 31 and the first support beam 35 of the weight frame 30. At this time, the first vertical weight 50 is positioned along the front-rear and up-down directions, with the lower engaging portion 51 of the first vertical weight 50 positioned on the lower side and the upper engaging portion 53 positioned on the upper side.

[0035] Next, as shown in Figure 7, the first vertical weight 50 is pushed into the weight frame 30 so that the first locking beam 34 is inserted into the insertion opening 52 of the first vertical weight 50. The first vertical weight 50 is pushed in until the first locking beam 34 reaches a position below the upper notched recess 53a of the upper engaging portion 53. At this time, the lower notched recesses 51a of the two lower engaging portions 51 are positioned above the corresponding lower beam protrusions 31b of the lower beam 31.

[0036] Next, the first vertical weight 50 is lowered. As shown in Figure 8, the first locking beam 34 is then inserted into the upper notched recess 53a of the first vertical weight 50. At this time, the corresponding lower beam protrusions 31b are inserted into the respective lower notched recesses 51a.

[0037] In this way, the lower engaging portion 51 of the first vertically mounted weight 50 engages with the lower beam projection 31b of the lower beam 31, and the upper engaging portion 53 engages with the first locking beam 34. As a result, the first vertically mounted weight 50 is mounted on the weight frame 30.

[0038] Subsequently, the other first vertical weights 50 are mounted on the weight frame 30 in the same manner. The first vertical weights 50 may be engaged with the lower beam projection 31b of the lower beam 31 and the first locking beam 34 at a position laterally separated from the first vertical weights 50 that were mounted earlier. After engagement, the first vertical weights 50 may be moved laterally and brought into contact with the first vertical weights 50 that were mounted earlier. While the first vertical weights 50 are being moved laterally, each lower engaging portion 51 of the first vertical weights 50 engages with the corresponding lower beam 31, and the upper engaging portion 53 engages with the first locking beam 34. This prevents the first vertical weights 50 from falling or tipping over.

[0039] In this way, the desired number of first vertically positioned weights 50 are mounted on the weight frame 30.

[0040] Next, the upper contact portion 61a of the upper pressing portion 61 is brought into contact with the upper end of each of the first vertically positioned weights 50, and both lateral ends of the upper pressing portion 61 are fixed to the corresponding vertical beams 32.

[0041] Next, as shown in Figure 5, the lateral contact portion 64 of the lateral pressing portion 62 is brought into contact with the outermost first vertical weight 50. In this case, first, the bracket 63 of the lateral pressing portion 62 is attached to the two mounting holes 61b located at desired positions on the upper pressing portion 61, according to the number of first vertical weights 50. Subsequently, with the lateral contact portion 64 in contact with the outermost first vertical weight 50, the nut 66 is tightened to fix the pressing bolt 65 to the bracket 63. In this way, multiple first vertical weights 50 can be held down from both sides by the pair of lateral pressing portions 62.

[0042] In this way, multiple first vertical weights 50 can be held in place. This prevents the first vertical weights 50 from collapsing and reduces vibrations during raising and lowering.

[0043] As described above, according to this embodiment, a plurality of first vertical weights 50 are mounted on the weight frame 30, stacked horizontally. Each first vertical weight 50 includes a lower engaging portion 51 that engages with the lower beam 31 of the weight frame 30 and an upper engaging portion 53 that engages with the first locking beam 34. The lower beam 31 and the first locking beam 34 extend horizontally. This prevents the first vertical weights 50 from being accidentally dropped when they are mounted on the weight frame 30. Furthermore, the first vertical weights 50 can be moved horizontally along the lower beam 31 and the first locking beam 34. As a result, workers can reduce the need to repeatedly stand up and squat down, thereby reducing the physical burden on the worker. Consequently, the work efficiency when mounting weights onto the weight frame 30 can be improved.

[0044] Furthermore, according to this embodiment, both ends of the upper pressing portion 61 are attached to the corresponding vertical beams 32. Each of the lateral pressing portions 62 is attached to the upper pressing portion 61. This makes it possible to configure a first pressing member 60 that presses down on multiple first vertical weights 50 from above and on both sides in the lateral direction. As a result, it is possible to prevent the first vertical weights 50 from collapsing and to reduce vibrations during raising and lowering.

[0045] Furthermore, according to this embodiment, the lateral pressing portion 62 includes a bracket 63 attached to the upper pressing portion 61, and a lateral contact portion 64 that is movable laterally relative to the bracket 63 and contacts the outermost first vertical weight 50. This allows the lateral position of the lateral contact portion 64 to be adjusted according to the number and position of the first vertical weight 50, and the lateral contact portion 64 to be brought into contact with the outermost first vertical weight 50.

[0046] Furthermore, according to this embodiment, the bracket 63 can be attached to the upper retaining portion 61 at multiple positions in the lateral direction. This allows the lateral position of the bracket 63 to be adjusted according to the number of first vertical weights 50, and the lateral contact portion 64 to be brought into contact with the outermost first vertical weight 50. In addition, the lateral position of the bracket 63 can be adjusted relatively large, and it can be easily adapted to changes in the number of first vertical weights 50.

[0047] Furthermore, according to this embodiment, the lower engaging portion 51 of the first vertical weight 50 includes a lower notched recess 51a that extends upward from the lower edge of the first vertical weight 50 and into which the lower beam 31 is inserted. This allows the lower engaging portion 51 to engage with the lower beam 31, thereby restricting the movement of the lower part of the first vertical weight 50 in the front-rear direction. Also, by lowering the first vertical weight 50 from above the lower beam 31, the lower beam 31 can be inserted into the lower notched recess 51a, and the lower engaging portion 51 can be easily engaged with the lower beam 31. This improves workability when mounting the weight onto the weight frame 30.

[0048] Furthermore, according to this embodiment, the first vertical weight 50 includes an insertion opening 52 that extends in the front-rear direction from one side edge to the upper engagement portion 53 and into which the first locking beam 34 can be inserted. The upper engagement portion 53 is an upper notched recess 53a that extends upward from the insertion opening 52 and includes an upper notched recess 53a into which the first locking beam 34 is inserted. This restricts the upper part of the first vertical weight 50 from moving in the front-rear direction when the first locking beam 34 is engaged with the upper engagement portion 53. Also, by lowering the first vertical weight 50 from above the first locking beam 34, the first locking beam 34 can be inserted into the upper notched recess 53a, and the upper engagement portion 53 can be easily engaged with the first locking beam 34. This improves workability when mounting the weight onto the weight frame 30.

[0049] Furthermore, according to this embodiment, the weight frame 30 includes a first support beam 35 that extends laterally and is located between the first locking beam 34 and the upper beam 33. Multiple horizontal weights 70 are placed on the first support beam 35 and stacked vertically. This allows the mass of the counterweight device 20 to be increased. Also, when multiple horizontal weights 70 are stacked on the first support beam 35, the number of first vertical weights 50 may be adjusted to adjust the mass of the counterweight device 20. In this case, the physical burden on the worker during the loading and removal of the first vertical weights 50 can be reduced as described above, thus improving the workability for mass adjustment. In addition, the horizontal weights 70 are placed on the first support beam 35 which is located above the first vertical weights 50. This reduces the vertical movement distance of the horizontal weights 70 within the weight frame 30 when loading them onto the weight frame 30. Therefore, the possibility of accidentally dropping the horizontally positioned weight 70 can be reduced, and the physical burden on the worker can be reduced. As a result, the workability when loading the weight onto the weight frame 30 can be improved.

[0050] In this embodiment described above, as shown in Figure 9, the first vertical weight 50 may include a handle 80. The handle 80 may be located on the opposite side from the insertion opening 52. The handle 80 may include a handle opening 81 formed in the first vertical weight 50. The worker can hold the first vertical weight 50 by inserting their hand into the handle opening 81. This improves the workability when loading the weight onto the weight frame 30.

[0051] Furthermore, in the embodiment described above, as shown in Figure 10, a vertical beam notch 82 into which a worker's hand can be inserted may be formed in at least one of the vertical beams 32 of the weight frame 30. The vertical beam notch 82 may be formed on the edge of at least one of the vertical beam protrusions 32b facing the first vertical weight 50. This improves the workability when loading the weight onto the weight frame 30 by allowing the worker's hand to be inserted into the vertical beam notch 82 when engaging the first vertical weight 50 with the lower beam 31 and the first locking beam 34 near the vertical beam 32. The vertical beam notch 82 may be formed in one of the vertical beam protrusions 32b, or in both vertical beam protrusions 32b. The vertical beam notch 82 may be formed in one of the vertical beams 32, or in both vertical beams 32.

[0052] Furthermore, in the above-described embodiment, an example was given in which the counterweight device 20 includes a horizontally positioned weight 70. However, this embodiment is not limited to this. For example, as shown in Figure 11, the counterweight device 20 does not have to include a horizontally positioned weight 70. In this case, the absence of the horizontally positioned weight 70 improves the workability when mounting the weight onto the weight frame 30. In the example shown in Figure 11, the first vertically positioned weight 50 extends upward from the lower beam 31 to a position relatively close to the upper beam 33, and the first locking beam 34 and the first pressing member 60 are also positioned higher than the positions shown in Figure 2.

[0053] Furthermore, in the embodiment described above, the counterweight device 20 may further include a second vertical weight 90, as shown in Figure 12.

[0054] In the counterweight device 20 shown in Figure 12, the weight frame 30 may further include a second support beam 91 and a second locking beam 92, as shown in Figure 13.

[0055] The second support beam 91 is located between the first locking beam 34 and the first support beam 35. The second support beam 91 extends laterally from one longitudinal beam 32 to the other longitudinal beam 32, and both lateral ends of the second support beam 91 may be fixed to the corresponding longitudinal beams 32. The second support beam 91, like the lower beam 31, may be made of U-shaped steel. The second support beam 91 may include a support beam base portion 91a similar to the lower beam base portion 31a, and a pair of support beam protrusions 91b similar to the lower beam protrusions 31b that protrude upward from the support beam base portion 91a.

[0056] The second locking beam 92 is located between the second support beam 91 and the first support beam 35. The second locking beam 92 extends laterally from one longitudinal beam 32 to the other longitudinal beam 32, and both lateral ends of the second locking beam 92 may be fixed to the corresponding longitudinal beams 32. The second locking beam 92 is configured to engage the upper engaging portion 53 of the second vertical weight 90. The second locking beam 92, like the first locking beam 34, may be formed flat along the lateral and vertical directions in the portion to which the second vertical weight 90 is engaged.

[0057] As shown in Figure 12, the second vertical weight 90 is supported by the weight frame 30. The second vertical weight 90, like the first vertical weight 50, is vertically positioned inside the weight frame 30 and stacked horizontally. As shown in Figure 13, the second vertical weight 90, like the first vertical weight 50, may include a lower engaging portion 51, an insertion opening 52, and an upper engaging portion 53. The lower engaging portion 51 of the second vertical weight 90 corresponds to the second lower engaging portion, and the upper engaging portion 53 corresponds to the second upper engaging portion. The lower engaging portion 51 of the second vertical weight 90 includes a lower notched recess 51a into which the corresponding support beam projection 91b is inserted. The second vertical weight 90 abuts against the support beam projection 91b and is supported by the second support beam 91. The insertion opening 52 of the second vertical weight 90 is configured to allow the second locking beam 92 described above to be inserted, and the upper engaging portion 53 of the second vertical weight 90 includes an upper notched recess 53a into which the second locking beam 92 is inserted.

[0058] As shown in Figure 12, the second pressing member 93 is configured to hold down the second vertically positioned weight 90. The second pressing member 93, like the first pressing member 60, includes an upper pressing portion 61 and a pair of lateral pressing portions 62. The upper pressing portion 61 of the second pressing member 93 corresponds to the second upper pressing portion, and the lateral pressing portions 62 correspond to the second lateral pressing portion. The upper pressing portion 61 of the second pressing member 93 is configured to hold down a plurality of second vertically positioned weights 90 from above and may include an upper contact portion 61a that abuts against the upper end of the second vertically positioned weight 90. The lateral pressing portions 62 of the second pressing member 93 are configured to hold down a plurality of second vertically positioned weights 90 from both sides in the lateral direction and may include a bracket 63 and a lateral contact portion 64. The second pressing member 93 may be configured in the same respect as the first pressing member 60 in other respects as well.

[0059] As shown in Figures 12 and 13, the counterweight device 20 further includes a second vertically stacked counterweight 90, which reduces the number of horizontally stacked counterweights 70 mounted on the counterweight frame 30. This further reduces the possibility of accidentally dropping the horizontally stacked counterweights 70 and reduces the physical burden on the worker. As a result, the workability when loading counterweights onto the counterweight frame 30 can be improved. In addition, the number of vertically stacked counterweights that improve the workability of mass adjustment of the counterweight device 20 can be increased. Therefore, the workability for mass adjustment can be further improved.

[0060] According to the embodiments described above, the workability when mounting the weights onto the weight frame can be improved.

[0061] While several embodiments of the present invention have been described, these embodiments are presented as examples only and are not intended to limit the scope of the invention. These novel embodiments can be implemented in a variety of other forms, and various omissions, substitutions, and modifications can be made without departing from the spirit of the invention. These embodiments and their variations are included in the scope and spirit of the invention, as well as in the claims and their equivalents. [Explanation of Symbols]

[0062] 20: Counterweight device, 30: Weight frame, 31: Lower beam, 31b: Lower beam projection, 32: Vertical beam, 32b: Vertical beam projection, 33: Upper beam, 34: First locking beam, 35: First support beam, 50: First vertical weight, 51: Lower engagement part, 51a: Lower notched recess, 52: Insertion opening, 53: Upper engagement part, 53a: Upper notched recess, 60: First retaining member, 61: Upper retaining part, 62: Lateral retaining part, 63: Bracket, 64: Lateral contact part, 70: Lateral weight, 80: Handle, 82: Vertical beam notch, 90: Second vertical weight, 91: Second support beam, 92: Second locking beam, 93: Second retaining member

Claims

1. An elevator counterweight device, A weight frame including a lower beam extending in a first direction, a pair of vertical beams extending upward from both ends of the lower beam, and an upper beam extending in the first direction from the upper end of one vertical beam to the upper end of the other vertical beam, A plurality of first vertically positioned weights are supported by the weight frame and stacked in the first direction, A first pressing member that holds down the first vertically positioned weight, Equipped with, The weight frame includes a first locking beam extending in the first direction, located between the lower beam and the upper beam. In a plan view, the direction perpendicular to the first direction is defined as the second direction. The first vertical weight includes a pair of first lower engaging portions that engage with the lower beam to restrict the movement of the lower part of the first vertical weight in the second direction, and a first upper engaging portion that engages with the first locking beam to restrict the movement of the upper part of the first vertical weight in the second direction. The first pressing member includes a first upper pressing portion that extends in the first direction and presses down on a plurality of first vertically positioned weights from above, and a pair of first lateral pressing portions that press down on a plurality of first vertically positioned weights from both sides in the first direction. Elevator counterweight mechanism.

2. Both ends of the first upper retaining portion are attached to the corresponding vertical beams. Each of the first lateral pressing portions is attached to the first upper pressing portion. The counterweight device for an elevator according to claim 1.

3. The first lateral pressing portion includes a bracket attached to the first upper pressing portion and a lateral contact portion that is movable in a first direction relative to the bracket and contacts the outermost first vertical weight. The counterweight device for an elevator according to claim 2.

4. The bracket can be attached to the first upper retaining portion at multiple positions in the first direction. The counterweight device for an elevator according to claim 3.

5. The first lower engaging portion extends upward from the lower edge of the first vertically positioned weight and includes a lower notched recess into which the lower beam is inserted. The counterweight device for an elevator according to any one of claims 1 to 4.

6. The first vertically positioned weight extends in the second direction from one side edge to the first upper engaging portion and includes an insertion opening into which the first locking beam can be inserted. The first upper engaging portion is an upper notched recess extending upward from the insertion opening, and includes an upper notched recess into which the first locking beam is inserted. The counterweight device for an elevator according to any one of claims 1 to 4.

7. The first vertically positioned weight includes a handle located on the opposite side of the insertion opening. The counterweight device for an elevator according to claim 6.

8. The longitudinal beam includes a pair of longitudinal beam protrusions that project toward the first longitudinal weight, At least one of the vertical beams has a vertical beam notch into which a worker's hand can be inserted. The vertical beam notch is formed on the edge of at least one of the vertical beam protrusions facing the first vertical weight. The counterweight device for an elevator according to any one of claims 1 to 4.

9. It further comprises multiple horizontally positioned weights stacked in the vertical direction, The weight frame further includes a first support beam extending in the first direction, located between the first locking beam and the upper beam. The aforementioned horizontally positioned weight is placed on the first support beam. The counterweight device for an elevator according to any one of claims 1 to 4.

10. A plurality of second vertically positioned weights are supported by the weight frame and stacked in the first direction, A second pressing member that holds down the second vertically positioned weight body, Furthermore, The weight frame further includes a second support beam extending in the first direction, located between the first locking beam and the upper beam, and a second locking beam extending in the first direction, located between the second support beam and the upper beam. The second vertical weight includes a pair of second lower engaging portions that engage with the second support beam to restrict the movement of the lower part of the second vertical weight in the second direction, and a second upper engaging portion that engages with the second locking beam to restrict the movement of the upper part of the second vertical weight in the second direction. The second pressing member includes a second upper pressing portion that extends in the first direction and presses down on a plurality of the second vertically positioned weights from above, and a pair of second lateral pressing portions that press down on the plurality of second vertically positioned weights from both sides in the first direction. The counterweight device for an elevator according to any one of claims 1 to 4.

Images