JP7601284B2 - Support device for hoist and hoist unit - Google Patents

Description

The present disclosure relates to a support device for a hoist and a hoist unit.

Conventionally, a top plate extending from the traction machine base toward the car has been proposed as a support device for a traction machine that suppresses horizontal vibrations of the traction machine. The end of this top plate has a shape that is bent vertically downward. The vertically downward portion is sandwiched between horizontal vibration-isolating rubber attached to the machine base from the car side and the counterweight side (see, for example, Patent Document 1).

JP 2017-214161 A

The vertical vibration isolating rubber that supports the hoisting machine base prevents vertical vibrations generated by the hoisting machine from being transmitted to the machine base. In the conventional hoisting machine support device described above, the vertically downward portion of the end of the upper panel is fixed by being sandwiched between horizontal vibration isolating rubber attached to the machine base. This limits the vertical expansion and contraction of the vertical vibration isolating rubber, and may make it impossible to prevent vertical vibrations generated by the hoisting machine from being transmitted to the machine base.

The present disclosure has been made to solve the above-mentioned problems, and aims to provide a support device for a hoist and a hoist unit that suppresses the transmission of vertical vibrations generated by the hoist to the machine base and suppresses horizontal vibrations of the hoist.

The support device for a hoist disclosed herein comprises a first member fixed to a machine base provided with an anti-vibration section and extending vertically on the hoist side supported by the anti-vibration section , and a second member attached on one side to the hoist and on the other side to the first member, the second member being movably attached relative to the first member, the first member being a rail, and the second member being fixedly attached on one side to the hoist and attached on the other side to the first member such that the second member can move along the first member .
The support device for a hoist disclosed herein comprises a first member that is fixed to a machine base on which an anti-vibration section is provided and extends vertically on the side of the hoist supported by the anti-vibration section, and a second member that is attached on one side to the hoist and on the other side to the first member, the second member being movably attached relative to the first member, one side of the second member being rotatably attached to the hoist, and the other side of the second member being rotatably attached to the first member.

The hoist unit according to the present disclosure comprises a hoist installed via an anti-vibration part fixed to a machine base, and a support device supporting the hoist, the support device comprising a first member fixed to the machine base and extending vertically toward the hoist, and a second member having one side attached to the hoist and the other side attached to the first member, the second member being movably attached relative to the first member, the first member being a rail, and the second member being fixedly attached to the hoist on one side, and the other side attached to the first member such that the second member can move along the first member.
The hoist unit according to the present disclosure comprises a hoist installed via a vibration-damping section provided on a machine base, and a support device supporting the hoist, the support device comprising a first member fixed to the machine base and extending vertically toward the hoist, and a second member having one side attached to the hoist and the other side attached to the first member, the second member being movably attached relative to the first member, one side of the second member being rotatably attached to the hoist, and the other side of the second member being rotatably attached to the first member.

According to the present disclosure, it is possible to obtain a support device for a hoist and a hoist unit that suppresses the transmission of vertical vibrations generated by the hoist to the machine base and suppresses horizontal vibrations of the hoist.

FIG. 2 is a front view of the hoist unit according to the first embodiment. 2 is a cross-sectional view of the hoist unit taken along line AA' in the first embodiment. FIG. 5 is a cross-sectional view of the supporting device taken along line BB' in the first embodiment. FIG. FIG. 11 is a front view of a hoist unit showing a modified example of the first embodiment. FIG. 11 is a front view of a hoisting machine unit in a second embodiment. FIG. 11 is an enlarged front view of a hoist unit in a second embodiment. FIG. 11 is a front view showing a modified example of the hoist unit in the second embodiment. FIG. 11 is a front view of a hoist unit in a third embodiment. FIG. 11 is a side view of a hoist unit in a third embodiment.

Embodiment 1.
The support device for the hoist in embodiment 1, the hoist unit including the hoist and the support device, and the hoist including the machine base, anti-vibration rubber, the suspension body, and the hoist unit will be described with reference to Figures 1 and 2. Note that the same reference numerals in each drawing represent the same or corresponding configurations. In the following description, the vertical direction is the direction parallel to the direction in which the hoist 11 moves away from the machine base 3. Also, the horizontal direction is the direction perpendicular to the vertical direction. Of the horizontal directions, the direction parallel to the direction from the machine base mounting column 1 to the machine base mounting column 2 is called the lateral direction. Also, of the horizontal directions, the direction perpendicular to the lateral direction is called the depth direction.

The hoisting device includes a machine base 3, anti-vibration rubber 4, a suspension body 5, and a hoisting machine unit 10. The machine base 3 is fixed and attached to the machine base mounting columns 1 and 2. The machine base mounting column 1 is a guide rail that guides, for example, the lifting and lowering of a cage (not shown). The machine base mounting column 2 is a guide rail that guides, for example, the lifting and lowering of a counterweight (not shown). The machine base 3 is provided with a plurality of anti-vibration rubbers 4, which are vibration-isolating parts. The anti-vibration rubbers 4 support the hoisting machine 11 described later and suppress the transmission of vertical vibrations generated by the hoisting machine 11 to the machine base 3. By suppressing the transmission of vibrations to the machine base 3, the machine base mounting columns 1 and 2 are less likely to vibrate. The suspension body 5 is wound around the sheave 11b of the hoisting machine 11 described later. A cage (not shown) is connected to one end of the suspension body 5, and a counterweight (not shown) is connected to the other end of the suspension body 5.

The hoisting machine unit 10 is composed of a hoisting machine 11 and multiple support devices 12. The hoisting machine 11 is supported by anti-vibration rubber 4. The hoisting machine 11 is composed of a drive unit 11a and a sheave 11b. The drive unit 11a is equipped with a motor and a brake, and rotates and brakes the sheave 11b. The suspension body 5 is wound around the sheave 11b.

Two support devices 12 are provided. The two support devices 12 are arranged so as to sandwich the hoisting machine 11 from the side. The support device 12 is composed of a rail 12a which is a first member and a block 12b which is a second member. One end of the rail 12a is fixed to the machine base 3, and extends vertically from the machine base 3 towards the hoisting machine 11. The rail 12a is also provided between the hoisting machine 11 and the machine base mounting column 1, and between the hoisting machine 11 and the machine base mounting column 2.

The block 12b is attached to the hoist 11 and the rail 12a so that the vibration-proof rubber 4 can expand and contract vertically and so as to prevent the machine base 3 and the hoist 11 from moving in opposite directions horizontally. Specifically, one side 13 of the block 12b, which is a surface parallel to the vertical direction, is fixed and attached to the side surface 14 of the drive unit 11a of the hoist 11, which is a surface parallel to the vertical direction. The other side of the block 12b, the attachment portion 15 formed on the opposite side to the one side 13 in the horizontal direction, is attached to the rail 12a so that the block 12b can move along the rail 12a. Therefore, the block 12b is movable relative to the rail 12a.

As shown in Fig. 3, the mounting portion 15 has the other surface 15b, which is a surface parallel to the one surface 13, and hook portions 15a provided on both sides of the other surface 15b for hooking onto the rail 12a. The block 12b is attached so that the direction from the one surface 13 toward the other surface 15b of the mounting portion 15 is parallel to the lateral direction.

If the vertical movement of the block 12b fixed to the hoist 11 is restricted, the vertical movement of the hoist 11 is restricted, and further, the vertical expansion and contraction of the anti-vibration rubber 4 may be restricted. Therefore, it is preferable that the length of the rail 12a is a length that allows the block 12b to be moved without restricting the expansion and contraction of the anti-vibration rubber 4.

Next, we will explain the action of the support device 12 when vibration occurs in the hoisting device 100 configured in this manner.

First, a case where the support device 12 is not provided in the hoist unit 10 will be described. The hoist 11 vibrates vertically and horizontally when the motor of the drive unit 11a is driven. When vertical vibration occurs from the hoist 11, the vibration-proof rubber 4 expands and contracts vertically to absorb the vertical vibration of the hoist 11, thereby preventing the vibration from being transmitted to the machine base 3.

When horizontal vibrations are generated from the hoist 11, these vibrations are transmitted to the machine base 3, and the hoist 11 and the machine base 3 may resonate in the horizontal direction. At this time, there are cases where the first mode is reached in which the vibrations of the hoist 11 and the machine base 3 are synchronized in phase, and cases where the second mode is reached in which the vibrations of the hoist 11 and the machine base 3 are synchronized in opposite phase. In the first mode, the resonant frequency of the hoist 11 and the machine base 3 in the horizontal direction is lower than in the second mode. On the other hand, in the second mode, the resonant frequency of the hoist 11 and the machine base 3 in the horizontal direction is higher than in the first mode.

When the vibrations of the hoist 11 and the machine base 3 are transmitted to other parts, if the frequency is high, it may cause noise or equipment failure. For example, when the high-frequency vibrations of the hoist 11 and the machine base 3 are transmitted to the air, a high-pitched sound is generated. This high-pitched sound may cause discomfort to passengers in the car as noise. In addition, for example, when the high-frequency vibrations of the hoist 11 and the machine base 3 are transmitted to equipment in the hoist 11, the equipment in the hoist 11 may fail due to the vibration. In order to suppress the occurrence of such noise or failure, it is necessary to suppress the vibration of the hoist 11 and the machine base 3 in the second mode. However, since the support device 12 is not provided in the hoist unit 10, the vibration of the hoist 11 and the machine base 3 in the second mode is not suppressed.

Next, a case where the support device 12 is provided in the hoist unit 10 will be described. The hoist 11 vibrates vertically and horizontally when the motor of the drive unit 11a is driven. When vertical vibration occurs from the hoist 11, the block 12b fixed to the hoist 11 moves along the rail 12a, and the block 12b vibrates vertically together with the vertical vibration of the hoist 11. Since the block 12b vibrates in accordance with the vibration of the hoist 11 in this way, the vertical expansion and contraction of the vibration-proof rubber 4 is not restricted. In other words, the vibration-proof rubber 4 can freely expand and contract in the vertical direction. Therefore, the vibration-proof rubber 4 can expand and contract in the vertical direction to absorb the vertical vibration of the hoist 11, and the transmission of the vibration to the machine base 3 can be suppressed.

When horizontal vibration occurs from the hoist 11, the hoist 11 and the machine base 3 may vibrate in the first mode or in the second mode, as in the case where the support device 12 is not provided in the hoist unit 10. However, since the support device 12 is provided in the hoist unit 10, the hoist 11 and the machine base 3 are connected via the support device 12, so that the hoist 11 and the machine base 3 tend to move forward in the horizontal direction. Therefore, the hoist 11 and the machine base 3 tend to vibrate in the first mode. Also, since the hoist 11 and the machine base 3 are connected via the support device 12, the hoist 11 and the machine base 3 are prevented from moving in the opposite direction in the horizontal direction. Therefore, the hoist 11 and the machine base 3 are unlikely to vibrate in the second mode. In this way, the vibration in the second mode with a high resonant frequency is suppressed, so that the horizontal vibration of the hoist 11 and the machine base 3 is suppressed. Therefore, the occurrence of noise or equipment failure is suppressed. Here, the term "vibration is suppressed" means that the frequency of vibration is less likely to increase.

In addition, when horizontal vibrations occur from the hoist 11, in other words, when the hoist 11 moves horizontally, the direction from one surface 13 of the block 12b to the other surface 15b of the mounting portion 15 becomes parallel to the horizontal direction. Therefore, even if the block 12b receives a horizontal force from the hoist 11, no moment of force is applied to rotate the block 12b. Even if the block 12b rotates, the hook portion 15a is hooked on the rail 12a, so the block 12b does not rotate further. Therefore, the hoist 11 is less likely to receive a vertical force from the block 12b, so that the vertical vibrations of the hoist 11 are less likely to be amplified, and excessive load is suppressed on the vibration-proof rubber 4 supporting the hoist 11.

In this way, in a support device 12 equipped with a rail 12a extending vertically on the hoist 11 side and a block 12b with one side 13 attached to the side surface 14 of the hoist 11 and an attachment portion 15 attached to the rail 12a so that the anti-vibration rubber 4 can freely expand and contract in the vertical direction and so that the machine base 3 and the hoist 11 are prevented from moving in opposite directions in the horizontal direction, when vertical vibrations are generated from the hoist 11, the block 12b vibrates in accordance with the vibrations of the hoist 11, so that the anti-vibration rubber 4 can freely expand and contract in the vertical direction. Therefore, the anti-vibration rubber 4 can expand and contract vertically to absorb the vertical vibrations of the hoist 11 and prevent the vibrations from being transmitted to the machine base 3.

In addition, when horizontal vibrations occur from the hoisting machine 11, even if these vibrations are transmitted to the machine base 3 and the hoisting machine 11 and the machine base 3 resonate in the horizontal direction, the hoisting machine 11 and the machine base 3 are unlikely to move in opposite directions in the horizontal direction because the hoisting machine 11 and the machine base 3 are connected via the support device 12. This makes it difficult for the vibrations of the hoisting machine 11 and the machine base 3 to synchronize in opposite phases. Therefore, vibrations in the second mode with a high resonant frequency are suppressed, and the horizontal vibrations of the hoisting machine 11 can be suppressed.

Furthermore, in the support device 12 in embodiment 1, the block 12b is movably attached to the rail 12a. Specifically, the block 12b is attached to the rail 12a so that it can move along the rail 12a. Therefore, when vertical vibrations are generated from the hoist 11, the block 12b vibrates in accordance with the vibrations of the hoist 11, and the vibration-proof rubber 4 can freely expand and contract in the vertical direction. Therefore, the vibration-proof rubber 4 can expand and contract in the vertical direction to absorb the vertical vibrations of the hoist 11, and the transmission of the vibrations to the machine table 3 can be suppressed.

Furthermore, in the support device 12 in the first embodiment, the block 12b is attached to the side surface 14 of the hoist 11 and the mounting portion 15 is attached to the rail 12a so that when the hoist 11 moves in the horizontal direction, the direction from the one surface 13 to the other surface 15b of the mounting portion 15 is parallel to the horizontal direction. Therefore, even if the block 12b receives a lateral force from the hoist 11, a moment of force that rotates the block 12b is not applied. Also, even if the block 12b rotates, the hook portion 15a is hooked on the rail 12a, so that the block 12b does not rotate further. Therefore, the hoist 11 is unlikely to receive a vertical force from the block 12b, so that the vertical vibration of the hoist 11 is unlikely to be amplified, and excessive load is suppressed from being applied to the vibration-proof rubber 4 supporting the hoist 11.

Furthermore, in the hoist unit 10 in embodiment 1, two support devices 12 are provided. Therefore, the load on each support device 12 caused by supporting the hoist 11 can be reduced. Therefore, the support devices 12 are less likely to be damaged.

Furthermore, in the hoist unit 10 in embodiment 1, two support devices 12 are provided to sandwich the hoist 11 from the side. Therefore, when the hoist 11 moves in one side of the horizontal direction, the support device 12 provided on one side supports the hoist 11, suppressing the movement of the machine base 3 and the hoist 11 in the opposite direction. Also, when the hoist 11 moves in the other side of the horizontal direction, the support device 12 provided on the other side supports the hoist 11, suppressing the movement of the machine base 3 and the hoist 11 in the opposite direction. Therefore, the vibration of the hoist 11 and the vibration of the machine base 3 are unlikely to be synchronized in opposite phases. Therefore, the vibration in the second mode with a high resonant frequency is suppressed, and the horizontal vibration of the hoist 11 can be suppressed.

Although an example in which two support devices 12 are provided has been described, one support device 12 may also be provided. Even in such a case, by attaching the support device 12 laterally to the hoisting machine 11, the hoisting machine 11 and the machine base 3 are connected via the support device 12, so that the hoisting machine 11 and the machine base 3 are less likely to move in opposite directions in the horizontal direction. Therefore, the vibrations of the hoisting machine 11 and the machine base 3 are less likely to be synchronized in opposite phases. Therefore, vibration in the second mode with a high resonant frequency is suppressed, and horizontal vibration of the hoisting machine 11 can be suppressed.

In addition, three or more support devices 12 may be provided.

As shown in Figure 4, the block 12b and the hoist 11 may be molded integrally. In this case, the block 12b is formed on the side surface 14 of the hoist 11.

The vibration-isolating part is not limited to the vibration-isolating rubber 4, as long as it supports the hoisting machine 11 and suppresses the vertical vibration generated by the hoisting machine 11 from being transmitted to the machine base 3. For example, a spring may be used as the vibration-isolating part.

The hoist 11 may be composed of a drive unit 11a, a sheave 11b, and a hoist base that supports the drive unit 11a.

Although an example has been described in which two support devices 12 are arranged to sandwich the hoist 11 from the lateral direction, the two support devices 12 may also be arranged to sandwich the hoist 11 from the depth direction in the horizontal direction.

Even with the support device 12 for the hoist 11 and the hoist unit 10 configured as described above, when vertical vibrations occur from the hoist 11, the block 12b vibrates in accordance with the vibrations of the hoist 11, so the vibration-proof rubber 4 can expand and contract vertically. Therefore, the vibration-proof rubber 4 can expand and contract vertically to absorb the vertical vibrations of the hoist 11, and the transmission of the vibrations to the machine base 3 can be suppressed.

In addition, when horizontal vibrations occur from the hoisting machine 11, even if these vibrations are transmitted to the machine base 3 and the hoisting machine 11 and the machine base 3 resonate in the horizontal direction, the hoisting machine 11 and the machine base 3 are unlikely to move in opposite directions in the horizontal direction because the hoisting machine 11 and the machine base 3 are connected via the support device 12. This makes it difficult for the vibrations of the hoisting machine 11 and the machine base 3 to synchronize in opposite phases. Therefore, vibrations in the second mode with a high resonant frequency are suppressed, and the horizontal vibrations of the hoisting machine 11 can be suppressed.

Embodiment 2.
In embodiment 1, an example is described in which two support devices 12 are arranged to sandwich the hoist 11 from the side, whereas in embodiment 2, an example is described in which the support device 12 is arranged so that a portion of the rail 12a and the block 12b of the support device 12 are stored in a recess formed in the opposing surface facing the machine base 3 of the hoist 11.

As shown in Figure 5, the drive unit 11a of the hoist 11 has a recess 17 formed in the facing surface 16 that faces the machine base 3. The recess 17 is formed continuously in the depth direction from the sheave side to the opposite side.

As shown in Figure 6, the support device 12 is composed of one rail 12a and two blocks 12b. The rail 12a extends vertically on the hoist 11 side, and one end of the rail 12a is fixed to the machine base 3. The other end, which is part of the rail 12a, is stored in a recess 17. Note that, in order to prevent the hoist 11 from coming into contact with the other end of the rail 12a when the hoist 11 vibrates in the vertical direction, it is preferable that the other end of the rail 12a is not in contact with the recess 17 when the hoist 11 is not vibrating in the vertical direction.

Two blocks 12b are provided so as to sandwich the rail 12a from the lateral direction in the horizontal direction. At this time, the mounting portion 15 of one block 12b and the mounting portion 15 of the other block 12b face each other. The two blocks 12b are stored in the recess 17. One side 13 of the block 12b is fixed and attached to the inner surface 17a, which is a surface parallel to the vertical direction of the recess 17 of the hoist 11. The mounting portion 15 of the block 12b is attached to the rail 12a so that the block 12b can move along the rail 12a. In addition, one side 13 of the block 12b is attached to the side surface 14 of the hoist 11, and the mounting portion 15 is attached to the rail 12a so that the direction from the one side 13 to the other side 15b of the mounting portion 15 is parallel to the lateral direction.

Even in the support device 12 shown in the second embodiment configured in this way, when vertical vibrations occur from the hoisting machine 11, the block 12b vibrates in accordance with the vibrations of the hoisting machine 11, so the vibration-proof rubber 4 can expand and contract vertically. Therefore, the vibration-proof rubber 4 can expand and contract vertically to absorb the vertical vibrations of the hoisting machine 11, and the transmission of the vibrations to the machine base 3 can be suppressed.

In addition, when horizontal vibrations are generated from the hoisting machine 11, even if these vibrations are transmitted to the machine base 3 and the hoisting machine 11 and the machine base 3 resonate in the horizontal direction, the hoisting machine 11 and the machine base 3 tend to move forward in the horizontal direction and are less likely to move in the reverse direction because the hoisting machine 11 and the machine base 3 are connected via the support device 12. This makes it difficult for the vibrations of the hoisting machine 11 and the machine base 3 to synchronize in opposite phases. Therefore, vibrations in the second mode with a high resonant frequency are suppressed, and the horizontal vibrations of the hoisting machine 11 can be suppressed.

Furthermore, in the support device 12 in embodiment 2, the other end side of the rail 12a and the block 12b are stored in a recess 17 formed in the opposing surface 16 of the hoist 11. Therefore, the support device 12 can be installed without providing additional space for installing the support device 12.

Furthermore, in the support device 12 in the second embodiment, two blocks 12b are provided so as to sandwich the rail 12a from the lateral direction in the horizontal direction. Therefore, even if one block 12b receives a lateral force from the hoist 11 and applies a force to the rail 12a, the rail 12a is supported by the other block 12b, so that distortion of the rail 12a is suppressed.

Although an example in which one recess 17 is formed on the facing surface 16 of the hoist 11 has been described, multiple recesses 17 may be formed on the facing surface 16 as shown in Figure 7. In this case, a support device 12 may be provided for each recess 17.

In addition, the recess 17 on the opposing surface 16 of the hoist 11 does not have to be continuous in the horizontal direction from the sheave 11b side to the opposite side, as long as it is capable of storing the rail 12a and block 12b of the support device 12.

In addition, multiple support devices 12 may be provided, and the other end sides of the rails 12a and the blocks 12b of the multiple support devices 12 may be stored in one recess 17 on the opposing surface 16.

The recess 17 of the opposing surface 16 may be formed in the horizontal direction. In this case, the two blocks 12b of the support device 12 are arranged to sandwich the rail 12a from the depth direction.

Embodiment 3.
In the first embodiment, an example in which the support device 12 is composed of the rail 12a and the block 12b has been described, but in the third embodiment, an example in which the support device 20 is composed of a mounting bracket and a rod will be described.

As shown in Figures 8 and 9, four support devices 20 are provided. The four support devices 20 are arranged so as to sandwich the hoist 11 in the horizontal direction, i.e., the lateral direction and the depth direction.

The support device 20 is composed of a mounting bracket 20a, which is a first member, and a rod 20b, which is a second member. The mounting bracket 20a is L-shaped and extends vertically from the machine base 3 toward the hoist 11. One end of the mounting bracket 20a is fixed to the machine base 3.

The rod 20b is attached to the hoist 11 and the mounting bracket 20a so that the vibration-proof rubber 4 can expand and contract vertically and so that the machine base 3 and the hoist 11 are prevented from moving in opposite directions in the horizontal direction. Specifically, one end of the rod 20b is rotatably attached to the hoist 11. The other end of the rod 20b is rotatably attached to the mounting bracket 20a. Therefore, the block 12b is movable relative to the rail 12a. In addition, one end of the rod 20b is attached to the hoist 11 and the other end is attached to the mounting bracket 20a so that the direction from one end to the other end is parallel to the horizontal direction.

If the vertical movement of the hoist 11 is restricted, the vertical expansion and contraction of the anti-vibration rubber 4 may be restricted. Therefore, the length of the rod 20b is determined so as not to restrict the vertical movement of the hoist 11, taking into consideration the amplitude of the vertical vibration of the hoist 11. For example, when the amplitude of the vertical vibration of the hoist 11 is 2 mm (millimeters), the length of the rod 20b is set to 500 mm. Note that since the length of the rod 20b is sufficiently long compared to the amplitude of the vertical vibration of the hoist 11, even if the hoist 11 vibrates vertically and the rod 20b rotates, the direction from one end of the rod 20b to the other end can be approximated to the horizontal direction.

Next, we will explain the action of the support device 20 when vibration occurs in the hoisting device 100 configured in this manner.

The hoist 11 vibrates vertically and horizontally when the motor of the drive unit 11a is driven. When vertical vibration occurs from the hoist 11, the rod 20b rotates in conjunction with the vibration of the hoist 11, allowing the hoist 11 to move vertically. Therefore, the vertical expansion and contraction of the vibration-proof rubber 4 is not restricted. In other words, the vibration-proof rubber 4 is free to expand and contract in the vertical direction. Therefore, the vibration-proof rubber 4 can expand and contract vertically to absorb the vertical vibration of the hoist 11, and the transmission of the vibration to the machine base 3 can be suppressed.

When horizontal vibration occurs from the hoist 11, the hoist 11 and the machine base 3 may vibrate in the first mode or in the second mode. However, since the hoist 11 and the machine base 3 are connected via the support device 20, the hoist 11 and the machine base 3 tend to move forward in the horizontal direction. Therefore, the hoist 11 and the machine base 3 tend to vibrate in the first mode. Also, since the hoist 11 and the machine base 3 are connected via the support device 20, the hoist 11 and the machine base 3 are prevented from moving in the opposite direction in the horizontal direction. Therefore, the hoist 11 and the machine base 3 are unlikely to vibrate in the second mode. In this way, the vibration in the second mode, which has a high resonant frequency, is suppressed, and thus the horizontal vibration of the hoist 11 and the machine base 3 is suppressed.

In addition, when horizontal vibrations occur from the hoist 11, in other words, when the hoist 11 moves horizontally, the direction from one end of the rod 20b to the other end is parallel to the horizontal direction. Therefore, even if the rod 20b receives a horizontal force from the hoist 11, no moment of force is applied to rotate the rod 20b. Therefore, the hoist 11 does not receive a vertical force from the rod 20b, so the vertical vibrations of the hoist 11 are not amplified, and excessive load is not applied to the vibration-proof rubber 4 supporting the hoist 11.

Even in the support device 20 shown in embodiment 3 configured in this manner, when vertical vibrations occur from the hoisting machine 11, the rod 20b rotates in response to the vibrations of the hoisting machine 11, allowing the hoisting machine 11 to move vertically. Therefore, the vertical expansion and contraction of the vibration-proof rubber 4 is not restricted. In other words, the vibration-proof rubber 4 is free to expand and contract in the vertical direction. Therefore, the vibration-proof rubber 4 can expand and contract vertically to absorb the vertical vibrations of the hoisting machine 11, and the transmission of the vibrations to the machine base 3 can be suppressed.

In addition, when horizontal vibrations occur from the hoisting machine 11, even if these vibrations are transmitted to the machine base 3 and the hoisting machine 11 and the machine base 3 resonate in the horizontal direction, the hoisting machine 11 and the machine base 3 are unlikely to move in opposite directions in the horizontal direction because the hoisting machine 11 and the machine base 3 are connected via the support device 20. This makes it difficult for the vibrations of the hoisting machine 11 and the machine base 3 to synchronize in opposite phases. Therefore, vibrations in the second mode with a high resonant frequency are suppressed, and the horizontal vibrations of the hoisting machine 11 can be suppressed.

Although an example in which four support devices 20 are provided has been described, one or more may be provided.

1 Machine stand mounting column, 2 Machine stand mounting column, 3 Machine stand, 4 Anti-vibration rubber, 5 Suspension body, 10 Hoisting machine unit, 11 Hoisting machine, 12 Support device, 12a Rail, 12b Block, 13 One side, 14 Side, 15 Mounting portion, 15a Hook portion, 15b Other side, 16 Opposing surface, 17 Recess, 17a Inner surface, 20 Support device, 20a Mounting bracket, 20b Rod, 100 Hoisting device

Claims (10)

A first member is fixed to a machine base on which a vibration isolating unit is provided and extends in a vertical direction on a side of a hoisting machine installed via the vibration isolating unit;
a second member attached to the hoist at one side and to the first member at the other side;
the second member is movably attached to the first member;
The first member is a rail,
A support device for a hoist, wherein the second member is fixedly attached to the hoist on one side and is attached to the first member on the other side so that the second member can move along the first member. A first member is fixed to a machine base on which a vibration isolating unit is provided and extends in a vertical direction on a side of a hoisting machine installed via the vibration isolating unit;
a second member attached to the hoist at one side and to the first member at the other side;
the second member is movably attached to the first member;
The one side of the second member is rotatably attached to the hoist,
The other side of the second member is rotatably attached to the first member. The support device for a hoist as described in claim 1 or 2, wherein the second member is attached to the hoist on one side and to the first member on the other side such that when the hoist moves horizontally, the direction from the one side of the second member to the other side is parallel to the horizontal direction. The first member is fixed to the machine bed such that a portion of the first member is accommodated in a recess formed in an opposing surface of the hoisting machine facing the machine bed,
The support device for a hoist according to claim 1 or 2, wherein the second member is attached to the hoist at the one side and to the first member at the other side such that the second member is housed in the recess. The support device for a hoist according to claim 4 , wherein a plurality of the second members are provided so as to sandwich the first member in a horizontal direction. A hoisting machine installed via a vibration isolation unit provided on a machine base;
A support device for supporting the hoisting machine,
The support device includes:
A first member fixed to the machine base and extending in a vertical direction toward the hoist;
a second member having one side attached to the hoist and the other side attached to the first member;
the second member is movably attached to the first member;
The first member is a rail,
A hoist unit in which the second member is fixedly attached to the hoist on one side and is attached to the first member on the other side such that the second member is movable along the first member. A hoisting machine installed via a vibration isolation unit provided on a machine base;
A support device for supporting the hoisting machine,
The support device includes:
A first member fixed to the machine base and extending in a vertical direction toward the hoist;
a second member having one side attached to the hoist and the other side attached to the first member;
the second member is movably attached to the first member;
The one side of the second member is rotatably attached to the hoist,
The other side of the second member is a hoist unit rotatably attached to the first member. The hoist unit according to claim 6 or 7, wherein a plurality of the support devices are provided. The hoist unit according to claim 8 , wherein the plurality of support devices are arranged to sandwich the hoist in a horizontal direction. The hoist unit according to claim 6 or 7, wherein the hoist and the second member are integrally formed.

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