Vibration prevention device for elevator

Abstract

Provided is an anti-vibration device for an elevator that can simplify the structure for supporting an elevator car. The anti-vibration device for an elevator includes: a plurality of corner anti-vibration members respectively provided below the four corners of the floor of the elevator car; and a central anti-vibration member disposed below the floor of the car at a position where it overlaps with the lower frame of the car frame surrounding the outer periphery of the car in a horizontal projection plane, and disposed at a height such that the upper surface of the central anti-vibration member contacts the lower surface of the car earlier than the plurality of corner anti-vibration members when the car is installed.

Description

Technical Field

[0001] The present invention relates to an anti-vibration device for an elevator. Background Art

[0002] Patent Document 1 discloses an anti-vibration device for an elevator. According to this anti-vibration device for an elevator, anti-vibration members provided at the four corners of the bottom surface of an elevator car and anti-vibration members provided at the center of the bottom surface of the elevator car are used to perform anti-vibration of the elevator car.

[0003] Prior Art Documents

[0004] Patent Documents

[0005] Patent Document 1: Japanese Patent Laid-Open No. 08-192972 Summary of the Invention

[0006] Problems to be Solved by the Invention

[0007] However, in the anti-vibration device for an elevator described in Patent Document 1, the own weight of the elevator car is transmitted to the support frame via the anti-vibration members provided at the four lower corners of the elevator car floor. Therefore, a structure for supporting the load applied to the four lower corners of the elevator car floor is required.

[0008] The present invention has been completed to solve the above problems. An object of the present invention is to provide an anti-vibration device for an elevator that can simplify the structure for supporting an elevator car.

[0009] Means for Solving the Problems

[0010] The anti-vibration device for an elevator of the present invention includes: a plurality of corner anti-vibration members respectively provided below the four corners of the floor of an elevator car; and a central anti-vibration member disposed below the floor of the car at a position where it overlaps with the lower frame of the car frame surrounding the outer periphery of the car in a horizontal projection plane, and disposed at a height such that the upper surface of the central anti-vibration member contacts the lower surface of the car earlier than the plurality of corner anti-vibration members when the car is installed.

[0011] Advantages of the Invention

[0012] According to the present invention, the upper surface of the central anti-vibration member contacts the lower surface of the car earlier than the plurality of corner anti-vibration members when the car is installed. Therefore, the structure for supporting the elevator car can be simplified. Brief Description of the Drawings

[0013] Figure 1 is a structural diagram of an elevator to which the anti-vibration device for an elevator according to Embodiment 1 is applied.

[0014] Figure 2 is a view of the anti-vibration device for an elevator according to Embodiment 1.

[0015] Figure 3 This is a diagram for explaining the installation method of the anti-vibration device of the elevator in Embodiment 1.

[0016] Figure 4 This is a top view of the car floor of an elevator to which the anti-vibration device of the elevator in Embodiment 1 is applied.

[0017] Figure 5 This is a diagram of the anti-vibration device of the elevator in Embodiment 2.

[0018] Figure 6 This is a diagram for explaining the installation method of the anti-vibration device of the elevator in Embodiment 2.

[0019] Figure 7 This is a diagram for explaining the installation method of the anti-vibration device of the elevator in Embodiment 3. Detailed Embodiments

[0020] The embodiments will be described with reference to the accompanying drawings. In addition, in each drawing, the same or corresponding parts are denoted by the same reference numerals. The repeated description of such parts is appropriately simplified or omitted.

[0021] Embodiment 1

[0022] Figure 1 This is a structural diagram of an elevator to which the anti-vibration device of the elevator in Embodiment 1 is applied.

[0023] In Figure 1 In the elevator, the hoistway 1 penetrates through each floor of a building (not shown). The machine room 2 is provided directly above the hoistway 1. A plurality of landings 3 are respectively provided on each floor of the building. The plurality of landings 3 are respectively opposed to the hoistway 1.

[0024] The traction machine 4 is provided in the machine room 2. The main rope 5 is wound around the traction machine 4.

[0025] The car 6 is provided inside the hoistway 1. The car 6 is suspended on one side of the main rope 5. The counterweight 7 is provided inside the hoistway 1. The counterweight 7 is suspended on the other side of the main rope 5.

[0026] A plurality of landing doors 8 are respectively provided at the entrances and exits of the respective landings 3. The car door 9 is provided at the entrance and exit of the car 6.

[0027] The car frame 10 is provided to surround the outer periphery of the car 6. The car frame 10 is a frame body having a rectangular outer shape formed by an upper frame, vertical frames, and a lower frame 11. The car frame 10 supports the car 6.

[0028] The support frame 12 is provided between the car 6 and the lower frame 11. For example, the support frame 12 is in the shape of a square frame. The support frame 12 is provided such that its four sides respectively follow the edges of the floor of the car 6.

[0029] Next, the anti-vibration device will be described using Figure 2 the following.

[0030] Figure 2 FIG. is a diagram of the anti-vibration device of the elevator in Embodiment 1.

[0031] As Figure 2 shown, the anti-vibration device in Embodiment 1 includes two types of anti-vibration members, a corner anti-vibration member 13 and a central anti-vibration member 14.

[0032] For example, the plurality of corner anti-vibration members 13 are each made of a vibration-absorbing material. For example, the plurality of corner anti-vibration members 13 are each made of an elastomer. For example, the plurality of corner anti-vibration members 13 are each anti-vibration rubber. The plurality of corner anti-vibration members 13 are each mounted on the support frame 12. The plurality of corner anti-vibration members 13 are each provided below the four corners of the floor of the car 6 (not shown). For example, the plurality of corner anti-vibration members 13 are each mounted on both end sides of the support frame 12. The plurality of corner anti-vibration members 13 are each mounted on the support frame 12 using a fastener 15.

[0033] For example, the central anti-vibration member 14 is made of a vibration-absorbing material. For example, the central anti-vibration member 14 is made of an elastomer. For example, the central anti-vibration member 14 is anti-vibration rubber. For example, the elastic coefficient of the central anti-vibration member 14 is the same as that of the corner anti-vibration member 13. In the natural state, the height of the central anti-vibration member 14 is higher than the height of the corner anti-vibration member 13 in the natural state. For example, when the weight M of the car 6 (not shown) acts from above, the position of the upper surface of the central anti-vibration member 14 becomes the same height as the position of the upper surface of the corner anti-vibration member 13 in the natural state. For example, when the weight M of the car 6 (not shown) acts from above, the height of the central anti-vibration member 14 is equal to the height of the corner anti-vibration member 13 in the natural state. For example, the central anti-vibration member 14 is mounted near the center of the support frame 12. For example, the central anti-vibration member 14 is each provided below the center of the side portion of the floor of the car 6 (not shown). The central anti-vibration member 14 is mounted such that the mounting height of the bottom surface is the same as the mounting height of the bottom surfaces of the plurality of corner anti-vibration members 13. The central anti-vibration member 14 is mounted on the support frame 12 using a fastener 15.

[0034] For example, the fastener 15 is a bolt and a nut. For example, the fastener 15 is a stop bolt.

[0035] Next, the installation method of the anti-vibration device will be described using Figure 3 the following.

[0036] Figure 3 FIG. is a diagram for explaining the installation method of the anti-vibration device of the elevator in Embodiment 1.

[0037] As Figure 3As shown, the car floor frame 16 is adjacent to the support frame 12 from above. The car floor frame 16 constitutes the lower part of the car 6. The car floor frame 16 is adjacent to the car floor 17 from below. The car floor frame 16 supports the car 6 from below. The car floor 17 is the floor surface for the passengers of the elevator to enter.

[0038] A plurality of corner vibration isolators 13 are respectively adjacent to the car floor frame 16 from below. The central vibration isolator 14 is adjacent to the car floor frame 16 from below. The weight M of the car 6 acts on the central vibration isolator 14 from vertically above. The weight M of the car 6 is the sum of the weight of the car cabin and the car floor frame 16. The weight M of the car 6 is transmitted to the lower frame 11 via the central vibration isolator 14 and the support frame 12. If the weight M of the car 6 acts from vertically above, the height of the central vibration isolator 14 is equal to the height of the corner vibration isolators 13.

[0039] Next, the installation steps of the car 6 will be described. First, the central vibration isolator 14 is set. Next, the car 6 is set from above the central vibration isolator 14. At this time, the lower surface of the car floor frame 16 contacts the upper surface of the central vibration isolator 14. The central vibration isolator 14 is deformed due to the action of the weight M of the car 6. Specifically, the central vibration isolator 14 contracts in the vertical direction. Next, the central vibration isolator 14 is installed on the car floor frame 16 using the fastener 15. After that, a plurality of corner vibration isolators 13 are respectively set between the support frame 12 and the car floor frame 16. Finally, a plurality of corner vibration isolators 13 are respectively installed on the car floor frame 16 using the fastener 15.

[0040] Next, use Figure 4 to describe the installation position of the vibration isolation device.

[0041] Figure 4 is a top view of the car floor of an elevator to which the vibration isolation device of the elevator in Embodiment 1 is applied.

[0042] As Figure 4As shown, the four corner anti-vibration members 13 are respectively disposed below the four corners of the car floor 17. One of the two central anti-vibration members 14 is disposed below the vicinity of the center of one side portion of the car floor 17. One of the two central anti-vibration members 14 is disposed above one end of the lower frame 11. For example, one of the two central anti-vibration members 14 is disposed at a position where at least a part thereof overlaps the lower frame 11 on the horizontal projection plane. For example, one of the two central anti-vibration members 14 is disposed at a position where the whole thereof overlaps the lower frame 11 on the horizontal projection plane. The other of the two central anti-vibration members 14 is disposed below the vicinity of the center of the side portion of the car floor 17 that is opposed to the side portion where one of the two central anti-vibration members 14 is disposed. The other of the two central anti-vibration members 14 is disposed above the other end of the lower frame 11. For example, the other of the two central anti-vibration members 14 is disposed at a position where at least a part thereof overlaps the lower frame 11 on the horizontal projection plane. For example, the other of the two central anti-vibration members 14 is disposed at a position where the whole thereof overlaps the lower frame 11 on the horizontal projection plane.

[0043] According to the first embodiment described above, the upper surface of the central anti-vibration member 14 contacts the lower surface of the car 6 earlier than the plurality of corner anti-vibration members 13 when the car 6 is installed. Therefore, the weight M of the car 6 acts on the central anti-vibration member 14, reducing the load acting on the corner anti-vibration members 13. As a result, the structure for supporting the car 6 can be simplified.

[0044] In addition, the height of the central anti-vibration member 14 is equal to the height of the corner anti-vibration members 13 when the weight M of the car 6 acts from above. As a result, the weight M of the car 6 does not act on the plurality of corner anti-vibration members 13, and only the weights of the passengers, goods, etc. loaded in the elevator act on the plurality of corner anti-vibration members 13. The force generated by the weight M of the car 6 does not act below the corner anti-vibration members 13. In this way, the functions of the central anti-vibration member 14 and the plurality of corner anti-vibration members 13 are separated from each other. Therefore, the load acting on the support frame 12 is reduced.

[0045] In the prior art, in order to withstand the bending moment generated in the support frame 12 due to the weight M of the car 6, a diagonal brace needs to be installed between the longitudinal frame of the elevator and the end of the support frame 12. On the other hand, in the first embodiment, when a diagonal brace is designed between the longitudinal frame of the elevator and the support frame 12, it is as follows.

[0046] Let the angle formed by the cross brace and the support frame 12 be θ, the load acting vertically downward on the cross brace be b1, the load acting vertically downward on the end of the support frame 12 be b2, and the distance from the connection part of the support frame 12 and the longitudinal frame to the connection part of the support frame 12 and the cross brace be l. The load b′ shared by the cross brace and the support frame 12 is b′ = b1 + b2. In the prior art, if the load shared by the cross brace and the support frame 12 is set as b, then b′ is b′ = 1 / 3b. In addition, the tensile load acting on the cross brace is b1 / sinθ. The bending moment acting on the support frame 12 due to b2, that is, b2×l, is 1 / 3 compared with the prior art situation. Therefore, even when there is a cross brace between the longitudinal frame of the elevator and the end of the support frame 12, the rigidity of the cross brace can be reduced and weight reduction can be achieved.

[0047] In addition, by making the position of the corner vibration isolator 13 closer to the lower frame 11, the bending moment acting on the support frame 12 becomes even smaller. For example, if the position of the corner vibration isolator 13 is offset to the midpoint between the connection part of the support frame 12 and the longitudinal frame and the connection part of the support frame 12 and the cross brace, the bending moment acting on the support frame 12 becomes b′×1 / 2. Since the bending moment generated in the support frame 12 is reduced, a cross brace is not required, or it can be made into a simple cross brace or measuring frame with reduced components or fewer components. As a result, cost reduction, transportation cost reduction, and installation time shortening of the structure for supporting the car 6 can be achieved.

[0048] In addition, if the rigidity of the support frame 12 can withstand the bending moment b′×l, then there is no need to provide a cross brace or corner posts.

[0049] In addition, the elastic coefficient of the corner vibration isolator 13 can also be greater than the elastic coefficient of the central vibration isolator 14. In this case, the force from vertically above acting on the corner vibration isolator 13 can be reduced.

[0050] In addition, the elastic coefficient of the corner vibration isolator 13 can also be the same as the elastic coefficient of the central vibration isolator 14.

[0051] In addition, the fastener 15 can also limit the contraction of the central vibration isolator 14 when a load above a preset weight acts on the central vibration isolator 14 from vertically downward. In this case, even in an emergency such as when the emergency stop device of the elevator operates or when the buffer collides, the impact load will not act on the central vibration isolator 14.

[0052] Embodiment 2

[0053] Figure 5 It is a diagram of the vibration isolation device of the elevator in Embodiment 2. In addition, the same reference numerals are given to parts that are the same as or equivalent to those in Embodiment 1. The description of this part is omitted.

[0054] As Figure 5 shown, the anti-vibration device of the elevator according to Embodiment 2 is different from Embodiment 1 in that the corner anti-vibration member 13 and the central anti-vibration member 14 have the same height and include an adjustment body 18.

[0055] The adjustment body 18 is a flat plate-like member. For example, the adjustment body 18 is a metal plate-like member. For example, the thickness of the adjustment body 18 is the same as the height by which the central anti-vibration member 14 contracts in the vertical direction when the weight M of the car 6 (not shown) acts on the central anti-vibration member 14 from above. The adjustment body 18 is installed in contact with the lower surface of the central anti-vibration member 14. The adjustment body 18 is sandwiched between the support frame 12 and the central anti-vibration member 14. For example, the adjustment body 18 and the central anti-vibration member 14 are installed on the support frame 12 together using a fastener 15.

[0056] Next, Figure 6 is used to explain the installation method of the anti-vibration device.

[0057] Figure 6 is a diagram for explaining the installation method of the anti-vibration device of the elevator in Embodiment 2.

[0058] As Figure 6 shown, if the weight M of the car 6 of the elevator acts from above in the vertical direction, the sum of the height of the central anti-vibration member 14 and the thickness of the adjustment body 18 is equal to the height of the corner anti-vibration member 13.

[0059] According to Embodiment 2 described above, the thickness of the adjustment body 18 is the same as the height by which the central anti-vibration member 14 contracts in the vertical direction when the weight of the car 6 acts from above. Therefore, the height of the corner anti-vibration member 13 can be made the same as the height of the central anti-vibration member 14. As a result, the corner anti-vibration member 13 and the central anti-vibration member 14 can be made common components.

[0060] In addition, the adjustment body 18 can also be installed in contact with the upper surface of the central anti-vibration member 14. In this case, the adjustment body 18 is sandwiched between the central anti-vibration member 14 and the car floor frame 16.

[0061] Embodiment 3

[0062] Figure 7 is a diagram for explaining the installation method of the anti-vibration device of the elevator in Embodiment 3. In addition, the same reference numerals are given to parts that are the same as or equivalent to those in Embodiment 1. The description of this part is omitted.

[0063] As Figure 7 shown, the anti-vibration device of the elevator according to Embodiment 3 is different from Embodiment 1 in that it includes an adjustment bolt 19.

[0064] The plurality of adjustment bolts 19 can each extend in the vertical direction. The plurality of adjustment bolts 19 are each installed in contact with the upper surface of each of the plurality of corner vibration isolators 13. The plurality of adjustment bolts 19 are each clamped between each of the plurality of corner vibration isolators 13 and the car floor frame 16.

[0065] Next, the installation steps of the car 6 will be described. First, the central vibration isolator 14 is set. Next, the car 6 is set from above the central vibration isolator 14. At this time, the lower surface of the car floor frame 16 contacts the upper surface of the central vibration isolator 14. The central vibration isolator 14 deforms due to the weight M of the car 6 acting thereon. Specifically, the central vibration isolator 14 contracts in the vertical direction. Next, the central vibration isolator 14 is installed on the car floor frame 16 using the fastener 15. After that, the plurality of corner vibration isolators 13 are respectively set between the support frame 12 and the car floor frame 16. Next, the plurality of adjustment bolts 19 are respectively set on the upper parts of the plurality of corner vibration isolators 13. Finally, the plurality of adjustment bolts 19 are respectively adjusted so that the height of the central vibration isolator 14 in a state where the weight M of the car 6 of the elevator acts from above in the vertical direction is equal to the sum of the heights of each of the plurality of corner vibration isolators 13 and the heights of the adjustment bolts 19.

[0066] According to the third embodiment described above, the adjustment bolts 19 adjust the gap formed between the upper surface of the corner vibration isolator 13 and the lower surface of the car 6. Therefore, even without pre-calculating the weight M of the car 6, the weight acting on the corner vibration isolator 13 from the car 6 can be adjusted at the work site. Moreover, the tilt of the car floor 17 can be easily corrected.

[0067] In addition, the vibration isolation device of the elevator according to the first to third embodiments can also be applied to an elevator without a machine room.

[0068] Industrial Applicability

[0069] As described above, the vibration isolation device of the elevator of the present invention can be used for an elevator.

[0070] Reference Numeral Explanation

[0071] 1: hoistway; 2: machine room; 3: landing; 4: traction machine; 5: main rope; 6: car; 7: counterweight; 8: landing door; 9: car door; 10: car frame; 11: lower frame; 12: support frame; 13: corner vibration isolator; 14: central vibration isolator; 15: fastener; 16: car floor frame; 17: car floor; 18: adjustment body; 19: adjustment bolt.

Claims

1. An anti-vibration device for an elevator, comprising: A plurality of corner anti-vibration members, which are respectively disposed below the four corners of the floor of the elevator car; A central anti-vibration member, which is disposed below the floor of the car at a position where it overlaps with the lower frame of the car frame surrounding the outer periphery of the car in the horizontal projection plane, and is disposed at a height such that when the car is installed, the upper surface of the central anti-vibration member contacts the lower surface of the car earlier than the plurality of corner anti-vibration members; and An adjustment body, which is disposed at a position in contact with the upper surface or the lower surface of the central anti-vibration member, and the thickness of the adjustment body is the same as the height by which the central anti-vibration member contracts in the vertical direction when the weight of the car acts from above.

2. An anti-vibration device for an elevator, comprising: A plurality of corner anti-vibration members, which are respectively disposed below the four corners of the floor of the elevator car; A central anti-vibration member, which is disposed below the floor of the car at a position where it overlaps with the lower frame of the car frame surrounding the outer periphery of the car in the horizontal projection plane, and is disposed at a height such that when the car is installed, the upper surface of the central anti-vibration member contacts the lower surface of the car earlier than the plurality of corner anti-vibration members; and A plurality of adjustment bolts, which are respectively disposed between the upper surface of the plurality of corner anti-vibration members and the lower surface of the car, and adjust the gap formed between the upper surface of each of the plurality of corner anti-vibration members and the lower surface of the car in the vertical direction.

3. An anti-vibration device for an elevator, comprising: A plurality of corner anti-vibration members, which are respectively disposed below the four corners of the floor of the elevator car; A central anti-vibration member, which is disposed below the floor of the car at a position where it overlaps with the lower frame of the car frame surrounding the outer periphery of the car in the horizontal projection plane, and is disposed at a height such that when the car is installed, the upper surface of the central anti-vibration member contacts the lower surface of the car earlier than the plurality of corner anti-vibration members; Among them, The central anti-vibration member is made of an elastic body, and the plurality of corner anti-vibration members are respectively made of elastic bodies having an elastic coefficient larger than that of the central anti-vibration member.

4. The anti-vibration device for an elevator according to claim 3, wherein The anti-vibration device for an elevator comprises an adjustment body, which is disposed at a position in contact with the upper surface or the lower surface of the central anti-vibration member, and the thickness of the adjustment body is the same as the height by which the central anti-vibration member contracts in the vertical direction when the weight of the car acts from above.

5. The anti-vibration device for an elevator according to claim 3, wherein The anti-vibration device for an elevator comprises a plurality of adjustment bolts, which are respectively disposed between the upper surface of the plurality of corner anti-vibration members and the lower surface of the car, and adjust the gap formed between the upper surface of each of the plurality of corner anti-vibration members and the lower surface of the car in the vertical direction.

6. The anti-vibration device for an elevator according to any one of claims 1 to 5, wherein When the weight of the car acts from above, the height of the central anti-vibration member is equal to the height of the plurality of corner anti-vibration members.

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