Lifting beam device

Abstract

To provide a suspending beam device capable of moving a plurality of suspending tools in a wide range with respect to a body part of the suspending beam device.SOLUTION: Suspending beam devices 1, 10, 11 comprise: a long body portion 2; a plurality of trolleys 3A to 3D which are supported movably in a longitudinal direction of the body portion 2 and from which suspending tools 4A to 4D are suspended; a driving unit 20 which moves the plurality of trolleys 3A to 3D; and transmission units 30 which transmit a driving force of the driving unit 20 to the plurality of trolleys 3A to 3D to move the plurality of trolleys 3A to 3D, respectively. Moving ranges RA, RC of the suspending tools 4A, 4C on a side close to a central part of the body portion 2 in the longitudinal direction and moving ranges RB, RD of the suspending tool 4B, 4D on a side far from the central part are formed so as to overlap each other.SELECTED DRAWING: Figure 6

Description

[Technical Field]

[0001] The present invention relates to a hanging beam device. [Background technology]

[0002] A known type of lifting beam device is one that uses multiple lifting magnets to magnetically attract a long object such as a steel plate, and then lifts the object with multiple lifting devices, and then lifts the main body of the lifting beam device with a crane to lift and transport the object. Patent Document 1 discloses a hoist beam device in which multiple trolleys are supported on a single long main body so that they can move in the longitudinal direction of the main body, and a hoisting device is suspended from each trolley. In this hoist beam device, all of the trolleys can be moved by a single motor. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2016-60612 Summary of the Invention [Problem to be solved by the invention]

[0004] However, the technology disclosed in Patent Document 1 has a low degree of freedom of movement for each lifting magnet relative to the main body of the lifting beam device, and a single lifting beam device may not be able to handle the lifting of a variety of objects of different sizes and weights.

[0005] The present invention has been made in consideration of the above points, and aims to provide a lifting beam device that can lift a variety of objects by moving multiple lifting devices over a wide range relative to the main body of the lifting beam device. [Means for solving the problem]

[0006] The hanging beam device according to the present invention is An elongated main body portion; a plurality of trolleys supported movably in the longitudinal direction of the main body and each having a hoisting device suspended therefrom; a drive unit for moving the plurality of trolleys; a transmission unit capable of transmitting the driving force of the drive unit to the plurality of trolleys to move each of the plurality of trolleys; Equipped with The movement range of the suspender on the side closer to the center of the longitudinal direction of the main body and the movement range of the suspender on the side farther from the center are formed to overlap. And, the transmission unit includes a plurality of sprockets attached to the main body unit and a roller chain wound around the plurality of sprockets, The plurality of trolleys are respectively attached to the roller chain and are movable in the longitudinal direction of the main body by rotation of the sprocket; Furthermore, each of the plurality of trolleys is attached to one of the roller chains, The roller chains are arranged so that they overlap each other in the longitudinal range of the main body portion in which the roller chains are arranged. There are. [Effects of the Invention]

[0007] According to the present invention, it is possible to lift a variety of suspended objects. [Brief explanation of the drawings]

[0008] [Figure 1] 1 is a diagram illustrating a configuration of a suspension beam device according to a first embodiment. [Figure 2] This is a diagram showing a state in which the movement range of the lifting magnet on the side closer to the longitudinal center of the main body overlaps with the movement range of the lifting magnet on the side farther from the center. [Figure 3] 10A and 10B are diagrams illustrating the configuration of a suspension beam device of a comparative example. [Figure 4] This is a diagram showing the state in which each lifting magnet is gathered near the longitudinal center of the main body, magnetically attracting and transporting a short, heavy hanging object. [Figure 5] 10 is a diagram illustrating the configuration of a suspension beam device according to a second embodiment. FIG. [Figure 6] 10 is a diagram showing the configuration of a suspension beam device according to a third embodiment. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0009] Hereinafter, an embodiment of a hanging beam device according to the present invention will be described with reference to the drawings. In the following, a case where four trolleys are provided will be described, but the number of trolleys is not limited to four. In addition, for the sake of convenience, the longitudinal direction of the main body 2 may be simply referred to as the longitudinal direction hereinafter.

[0010] In addition, the following will explain the case where the lifting device is a lifting magnet and the object is lifted by magnetic attraction using the lifting magnet, but the same explanation will also be given for other cases, such as when the lifting device is a hook or the like and the object is lifted using the hook or the like. The present invention is also applicable to cases where the hoisting device is something other than a lifting magnet.

[0011] [First embodiment] FIG. 1 is a diagram illustrating the configuration of a suspension beam device according to the first embodiment. In this embodiment, the hoisting beam device 1 comprises a long main body 2 supported by a crane (not shown), first to fourth trolleys 3A to 3D supported on the main body 2 so as to be movable longitudinally, and first to fourth lifting magnets 4A to 4D as hoisting devices suspended from the first to fourth trolleys 3A to 3D, respectively. When referring to trolleys and lifting magnets in general, they are called trolley 3 and lifting magnet 4.

[0012] The hoisting beam device 1 magnetically attracts the plurality of lifting magnets 4 to a long hoisting object A such as a steel plate, which is an object to be transported. The main body 2 of the hoisting beam device 1 is hoisted by a crane (not shown), thereby hoisting the hoisted load A, and the hoisted load A is then transported.

[0013] The main body 2 is a hollow member with an open bottom. Although not shown in the figure, hook connecting portions to which crane hooks are connected are provided on the upper surface of one end side and the other end side in the longitudinal direction of the main body 2. In addition, a rail is provided on the inside of the lower part of the main body 2.

[0014] The first to fourth trolleys 3A to 3D are provided with wheels 5A to 5D, respectively. The wheels 5A to 5D run on rails inside the main body 2, allowing the first to fourth trolleys 3A to 3D to move in the longitudinal direction while being supported by the main body 2. Below the first to fourth trolleys 3A to 3D, first to fourth lifting magnets 4A to 4D are respectively suspended approximately horizontally via lifting magnet chains 6.

[0015] Next, the drive unit 20 in the suspension beam device 1 will be described. The driving unit 20 is for moving the first to fourth trolleys 3A to 3D. The transmission unit 30 transmits the driving force of the driving unit 20 to the first to fourth trolleys 3A to 3D, thereby moving each of the first to fourth trolleys 3A to 3D.

[0016] The driving unit 20 includes a motor 21 on the top surface of the main body 2 . In this way, in the hoisting beam device 1 according to this embodiment, all of the trolleys 3 can be moved by one motor 21. This also applies to the following embodiments.

[0017] The output of the motor 21 is transmitted to an output gear 23 via a gear box 22, and the drive of the motor 21 causes the output gear 23 to rotate. A motor roller chain 25 is stretched between the output gear 23 and a drive unit sprocket 24 that is coaxial with a first sprocket 31 of a transmission unit 30, which will be described later.

[0018] Next, the transmission unit 30 in the suspension beam device 1 will be described. A pair of first and second sprockets 31 and 32 spaced apart in the longitudinal direction are attached inside the main body 2. The first and second sprockets 31, 32 are arranged so that their tooth tips face each other in the longitudinal direction. The first sprocket 31 is disposed in the center of the main body 2 in the longitudinal direction, and the second sprocket 32 ​​is disposed on one end side of the main body 2 in the longitudinal direction.

[0019] A circular roller chain 33 is stretched over the first and second sprockets 31 and 32. A first trolley 3A and a second trolley 3B are attached to the roller chain 33.

[0020] The first trolley 3A is attached to the side of the main body 2 closer to the center in the longitudinal direction, and the second trolley 3B is attached to the side of the main body 2 farther from the center in the longitudinal direction. In this embodiment, the first lifting magnet 4A suspended from the first trolley 3A is the lifting magnet closer to the longitudinal center of the main body 2, and the second lifting magnet 4B suspended from the second trolley 3B is the lifting magnet farther from the longitudinal center of the main body 2.

[0021] On the other hand, the main body 2 is configured in the same manner from the center to the other end. That is, inside the main body 2, a pair of third and fourth sprockets 35 and 36 are attached, spaced apart in the longitudinal direction. The third and fourth sprockets 35, 36 are arranged so that the tooth tips face each other in the longitudinal direction.

[0022] The third sprocket 35 is disposed in the center of the main body 2 in the longitudinal direction, and is disposed in the vicinity of the first sprocket 31. The fourth sprocket 36 is disposed on the other end side of the main body 2 in the longitudinal direction.

[0023] The first sprocket 31 is provided with a gear 34 that is coaxial with the first sprocket 31. Similarly, the third sprocket 35 is provided with a gear 38 that is coaxial with the third sprocket 35. The gear 34 and the gear 38 mesh with each other, and the driving force of the driving unit 20 is transmitted to the third sprocket 35 via the gear 34 and the gear 38.

[0024] A circular roller chain 37 is stretched over the third and fourth sprockets 35 and 36. The roller chain 37 is attached to a third trolley 3C and a fourth trolley 3D.

[0025] The third trolley 3C is attached to the side of the main body 2 closer to the center in the longitudinal direction, and the fourth trolley 3D is attached to the side of the main body 2 farther from the center in the longitudinal direction. In this embodiment, the third lifting magnet 4C suspended from the third trolley 3C is the lifting magnet closer to the longitudinal center of the main body 2, and the fourth lifting magnet 4D suspended from the fourth trolley 3D is the lifting magnet farther from the longitudinal center of the main body 2.

[0026] The operation of the hanging beam device 1 according to this embodiment configured as above will be described with reference to FIG. In the following description, the rotation direction of each member is indicated as clockwise rotation or counterclockwise rotation according to the drawings such as FIG.

[0027] When the motor 21 of the drive unit 20 is driven to rotate the output gear 23 clockwise, the rotation is transmitted to the drive unit sprocket 24 via the motor roller chain 25, causing the drive unit sprocket 24 to rotate clockwise. When the drive sprocket 24 rotates clockwise, the rotation is transmitted to the first sprocket 31 of the transmission unit 30, which is provided coaxially with the drive sprocket 24, causing the first sprocket 31 to rotate clockwise.

[0028] When the first sprocket 31 rotates clockwise, the circular roller chain 33 is fed clockwise, causing the second sprocket 32 ​​to rotate clockwise. As the first and second sprockets 31, 32 rotate, the first trolley 3A and the second trolley 3B attached to the roller chain 33 move in the longitudinal direction of the main body 2, respectively.

[0029] As a result, the first lifting magnet 4A and the second lifting magnet 4B suspended from the first trolley 3A and the second trolley 3B, respectively, move to the left side in the figure. That is, in this case, the first and second lifting magnets 4A and 4B move in directions away from the center of the main body 2 in the longitudinal direction.

[0030] Furthermore, when the drive sprocket 24 rotates clockwise as described above, the rotation is transmitted to the third sprocket 35 via the gears 34 and 38, causing the third sprocket 35 to rotate counterclockwise. When the third sprocket 35 rotates counterclockwise, the circular roller chain 37 is sent counterclockwise, causing the fourth sprocket 36 to rotate counterclockwise. Then, due to the rotation of the third and fourth sprockets 35, 36, the third trolley 3C and the fourth trolley 3D attached to the roller chain 37 move in the longitudinal direction of the main body 2, respectively.

[0031] As a result, the third lifting magnet 4C and the fourth lifting magnet 4D suspended from the third trolley 3C and the fourth trolley 3D, respectively, move to the right in the figure. That is, in this case, the third and fourth lifting magnets 4C and 4D move in directions away from the center of the main body 2 in the longitudinal direction.

[0032] In this way, in the lifting beam device 1 of this embodiment, when the motor 21 of the drive unit 20 is driven to rotate the output gear 23 to the right, the first to fourth lifting magnets 4A to 4D all move in a direction away from the longitudinal center of the main body unit 2. That is, in this case, each lifting magnet 4 moves so that the gap between the first and second lifting magnets 4A, 4B and the third and fourth lifting magnets 4C, 4D increases.

[0033] On the other hand, in the hoisting beam device 1 according to this embodiment, when the motor 21 of the drive unit 20 is reversed to rotate the output gear 23 counterclockwise, the respective members move in the opposite direction to that described above. As a result, the first to fourth lifting magnets 4A to 4D all move in a direction approaching the longitudinal center of the main body 2. That is, in this case, each lifting magnet 4 moves so that the gap between the first and second lifting magnets 4A, 4B and the third and fourth lifting magnets 4C, 4D narrows.

[0034] At this time, the first trolley 3A and the second trolley 3B are attached to the roller chain 33 so that the distance between them is relatively short, thereby bringing the distance between the first lifting magnet 4A and the second lifting magnet 4B close in advance. When configured in this manner, when they are moved as described above, the movement range RA of the first lifting magnet 4A on the side closer to the longitudinal center of the main body 2 and the movement range RB of the second lifting magnet 4B on the side farther from the center overlap, as shown in Figure 2.

[0035] Also, although not shown in the figures, if the third trolley 3C and the fourth trolley 3D are configured as described above, when the third and fourth lifting magnets 4C and 4D are moved as described above, the movement range RC of the third lifting magnet 4C on the side closer to the longitudinal center of the main body 2 and the movement range RD of the fourth lifting magnet 4D on the side farther from the center will overlap.

[0036] In contrast, in a comparative example of a hanging beam device 100 shown in Figure 3, four circular roller chains 110-113 are hung on sprockets 102-109 provided on a main body 101, and first to fourth trolleys 121-124 are attached to each of the roller chains 110-113. Sprockets 103 and 104, and sprockets 107 and 108 are each coaxial. Therefore, the movement ranges R1 to R4 of the lifting magnets 131 to 134 do not overlap with each other.

[0037] As described above, in the lifting beam device 1 according to this embodiment, the roller chains 33 and the roller chains 37 are arranged in the longitudinal direction of the main body 2, and among the plurality of trolleys 3, a predetermined number of two or more trolleys 3 are attached to one roller chain each, so that the plurality of trolleys 3 are attached to the plurality of roller chains 33, 37, respectively. That is, in this embodiment, the first trolley 3A and the second trolley 3B are each attached to a roller chain 33, and the third trolley 3C and the fourth trolley 3D are each attached to a roller chain 37.

[0038] A predetermined number of trolleys 3 attached to one roller chain are attached so that the movement ranges R of the trolleys 3 overlap each other. That is, in the roller chain 33, the movement range RA of the first lifting magnet 4A on the side closer to the center in the longitudinal direction of the main body 2 and the movement range RB of the second lifting magnet 4B on the side farther from the center overlap.

[0039] In addition, in the roller chain 37, the movement range RC of the lifting magnet 4C on the side closer to the center in the longitudinal direction of the main body 2 and the movement range RD of the lifting magnet 4D on the side farther from the center overlap. Therefore, in the suspension beam device 1 according to this embodiment, it is possible to move the multiple lifting magnets 4 over a wider range relative to the main body 2, compared to the suspension beam device 100 of the comparative example.

[0040] Furthermore, according to the suspension beam device 1 of this embodiment, it is possible to particularly widen the range of movement of the first to fourth lifting magnets 4A to 4D toward the center of the main body 2. Therefore, even if the hanging load A is short and heavy, the first to fourth lifting magnets 4A to 4D can be gathered near the longitudinal center of the main body 2 as shown in Figure 4, and the hanging load A can be magnetically attracted and transported by the four lifting magnets 4.

[0041] In the comparative example of the lifting beam device 100, when transporting a short and heavy suspended object A, only the two lifting magnets 131 and 133 located near the center of the main body in the longitudinal direction could be used. Alternatively, a separate small lifting beam device was used for transportation. However, with the hanging beam device 1 according to this embodiment, the hanging equipment A can be transported by magnetically attracting it using the four lifting magnets 4A to 4D as described above. Therefore, even if the hanging equipment A is short and heavy, it can be transported safely.

[0042] In other words, according to the lifting beam device 1 of this embodiment, it is possible to move multiple lifting devices 4 over a wider range relative to the main body 2, compared to the comparative example lifting beam device 100 shown in Figure 3, making it possible to lift a variety of hanging objects A. In particular, since it is possible to expand the range of movement of the multiple hoisting devices 4 toward the center of the main body 2, even if the hanging object A is short and heavy, it is possible to gather the multiple hoisting devices 4 near the longitudinal center of the main body 2 as shown in Figure 4, and lift and transport the hanging object A safely with the multiple hoisting devices 4.

[0043] [Second embodiment] 5 is a diagram showing the configuration of a suspension beam device 10 according to a second embodiment. In this embodiment, members having the same functions as those in the first embodiment are denoted by the same reference numerals as those in the first embodiment, and descriptions thereof will be omitted. In this embodiment, the configuration of the driving unit 20 is the same as that in the first embodiment.

[0044] In this embodiment, the configuration of the transmission unit 30 is different from that in the first embodiment. In this embodiment, the transmission unit 30 comprises a plurality of sprockets attached to the main body 2 and a roller chain stretched across the plurality of sprockets, and multiple trolleys are each attached to the roller chains and can be moved in the longitudinal direction of the main body 2 by rotation of the sprockets, similar to the first embodiment.

[0045] However, in this embodiment, the multiple trolleys are attached one by one to a single roller chain, and the longitudinal range of the main body 2 in which the roller chains are arranged is different from the first embodiment in that the multiple roller chains are arranged so that they overlap each other.

[0046] The transmission unit 30 in this embodiment will be specifically described below. In this embodiment, a fifth sprocket 39 and a seventh sprocket 42 (described later) are coaxial with the drive unit sprocket 24 of the drive unit 20.

[0047] A pair of fifth and sixth sprockets 39 and 40 spaced apart in the longitudinal direction are attached inside the main body 2. The fifth and sixth sprockets 39, 40 are arranged so that their tooth tips face each other in the longitudinal direction. The fifth sprocket 39 is disposed in the longitudinal center of the main body 2, and the sixth sprocket 40 is disposed midway between the longitudinal center of the main body 2 and one end.

[0048] A circular roller chain 41 is stretched over the fifth and sixth sprockets 39 and 40. The roller chain 41 is attached to a first trolley 3A.

[0049] Furthermore, a pair of seventh and eighth sprockets 42 and 43 are attached inside the main body 2 and spaced apart in the longitudinal direction. The seventh sprocket 42 and the eighth sprocket 43 have larger diameters than the fifth sprocket 39 and the sixth sprocket 40.

[0050] The seventh and eighth sprockets 42, 43 are arranged so that the tooth tips face each other in the longitudinal direction. The seventh sprocket 42 is located in the longitudinal center of the main body 2 and is coaxial with the fifth sprocket 39. The eighth sprocket 43 is located at one end of the main body 2 in the longitudinal direction.

[0051] In addition, a circular roller chain 44 is stretched over the seventh and eighth sprockets 42 and 43. The roller chain 44 is attached to the second trolley 3B.

[0052] In this embodiment, the first trolley 3A is attached closer to the longitudinal center of the main body 2, and the second trolley 3B is attached farther from the longitudinal center of the main body 2. In this embodiment, the first lifting magnet 4A suspended from the first trolley 3A is the lifting magnet closer to the longitudinal center of the main body 2, and the second lifting magnet 4B suspended from the second trolley 3B is the lifting magnet farther from the longitudinal center of the main body 2.

[0053] On the other hand, the main body 2 is configured in the same manner from the center to the other end. That is, inside the main body 2, a pair of ninth sprocket 46 and tenth sprocket 47 are attached, spaced apart in the longitudinal direction. The ninth and tenth sprockets 46, 47 are arranged such that the tooth tips face each other in the longitudinal direction.

[0054] The ninth sprocket 46 is disposed in the center of the main body 2 in the longitudinal direction, and is disposed in the vicinity of the fifth sprocket 39 . The tenth sprocket 47 is disposed at a position midway between the center of the main body 2 in the longitudinal direction and the other end.

[0055] The fifth sprocket 39 and the seventh sprocket 42 are provided with gears 45 that are coaxial with the fifth sprocket 39 and the seventh sprocket 42. Similarly, the ninth sprocket 46 and an eleventh sprocket 51 (described later) are provided with gears 52 that are coaxial with the ninth sprocket 46 and the eleventh sprocket 51. Gear 45 and gear 52 mesh with each other, and the driving force of drive unit 20 is transmitted to ninth sprocket 46 and eleventh sprocket 51 via gear 45 and gear 52.

[0056] A circular roller chain 48 is stretched over the ninth and tenth sprockets 46 and 47. The roller chain 48 is attached to a third trolley 3C.

[0057] Further, inside the main body 2, a pair of eleventh and twelfth sprockets 49 and 50 are attached, spaced apart in the longitudinal direction. The eleventh sprocket 49 and the twelfth sprocket 50 have larger diameters than the ninth sprocket 46 and the tenth sprocket 47.

[0058] The eleventh and twelfth sprockets 49, 50 are arranged such that the tooth tips face each other in the longitudinal direction. The eleventh sprocket 49 is located in the longitudinal center of the main body 2 and is coaxial with the ninth sprocket 46, etc. The twelfth sprocket 50 is located at the other end of the main body 2 in the longitudinal direction.

[0059] A circular roller chain 51 is stretched over the eleventh and twelfth sprockets 49, 50. A fourth trolley 3D is attached to the roller chain 51.

[0060] In this way, the third trolley 3C is attached to the side closer to the longitudinal center of the main body 2, and the fourth trolley 3D is attached to the side farther from the longitudinal center of the main body 2. The third lifting magnet 4C suspended from the third trolley 3C is the lifting magnet closer to the longitudinal center of the main body 2, and the fourth lifting magnet 4D suspended from the fourth trolley 3D is the lifting magnet farther from the longitudinal center of the main body 2.

[0061] The operation of the hanging beam device 10 according to this embodiment configured as above will be described with reference to FIG. In the following description, the rotation direction of each member is indicated as clockwise rotation or counterclockwise rotation according to the drawings such as FIG.

[0062] When the motor 21 of the drive unit 20 is driven to rotate the output gear 23 clockwise, the rotation is transmitted to the drive unit sprocket 24 via the motor roller chain 25, causing the drive unit sprocket 24 to rotate clockwise. When the drive unit sprocket 24 rotates to the right, the rotation is transmitted to the fifth sprocket 39 and the seventh sprocket 42 of the transmission unit 30, which are arranged coaxially with the drive unit sprocket 24, causing the fifth sprocket 39 and the seventh sprocket 42 to rotate to the right.

[0063] When the fifth sprocket 39 and the seventh sprocket 42 rotate clockwise, the circular roller chains 41 and 44 are both fed clockwise, causing the sixth sprocket 40 and the eighth sprocket 43 to rotate clockwise. The rotation of the fifth and sixth sprockets 39, 40 causes the first trolley 3A attached to the roller chain 41 to move in the longitudinal direction of the main body 2. The rotation of the seventh and eighth sprockets 42, 43 causes the second trolley 3B attached to the roller chain 44 to move in the longitudinal direction of the main body 2.

[0064] As a result, the first lifting magnet 4A and the second lifting magnet 4B suspended from the first trolley 3A and the second trolley 3B, respectively, move to the left side in the figure. That is, in this case, the first and second lifting magnets 4A and 4B move in directions away from the center of the main body 2 in the longitudinal direction.

[0065] Furthermore, when the drive sprocket 24 rotates clockwise as described above, the rotation is transmitted to the ninth sprocket 46 and the eleventh sprocket 49 via the gears 45 and 52, causing the ninth sprocket 46 and the eleventh sprocket 49 to rotate counterclockwise. When the ninth sprocket 46 and the eleventh sprocket 49 rotate counterclockwise, the circular roller chains 48 and 51 are both sent counterclockwise, causing the tenth sprocket 47 and the twelfth sprocket 50 to rotate counterclockwise.

[0066] Then, the rotation of the ninth and tenth sprockets 46, 47 causes the third trolley 3C attached to the roller chain 48 to move in the longitudinal direction of the main body 2. Furthermore, the rotation of the eleventh and twelfth sprockets 49, 50 causes the fourth trolley 3D attached to the roller chain 51 to move in the longitudinal direction of the main body 2.

[0067] As a result, the third lifting magnet 4C and the fourth lifting magnet 4D suspended from the third trolley 3C and the fourth trolley 3D, respectively, move to the right in the figure. That is, in this case, the third and fourth lifting magnets 4C and 4D move in directions away from the center of the main body 2 in the longitudinal direction.

[0068] In this way, in the lifting beam device 10 of this embodiment, when the motor 21 of the drive unit 20 is driven to rotate the output gear 23 to the right, the first to fourth lifting magnets 4A to 4D all move in a direction away from the longitudinal center of the main body unit 2. That is, in this case, each lifting magnet 4 moves so that the gap between the first and second lifting magnets 4A, 4B and the third and fourth lifting magnets 4C, 4D increases.

[0069] As described above, the diameters of the seventh sprocket 42, the eleventh sprocket 49, etc. are larger than the diameters of the fifth sprocket 39, the ninth sprocket 46, etc. Therefore, in this embodiment, among the lifting magnets 4 moving in the same direction, the lifting magnet 4 on the side farther from the longitudinal center of the main body 2 moves away from the center at a faster speed than the lifting magnet 4 on the side closer to the longitudinal center of the main body 2.

[0070] In other words, in this case, when the first and second lifting magnets 4A and 4B move to the left in the figure, the second lifting magnet 4B, which is farther from the longitudinal center of the main body 2, moves to the left in the figure more quickly than the first lifting magnet 4A, which is closer to the longitudinal center of the main body 2. Furthermore, of the third and fourth lifting magnets 4C and 4D that move to the right in the figure, the fourth lifting magnet 4D, which is farther from the longitudinal center of the main body 2, moves to the left in the figure more quickly than the third lifting magnet 4C, which is closer to the longitudinal center of the main body 2.

[0071] In this case, the lifting magnets 4 move so that the gap between the first and second lifting magnets 4A, 4B and the third and fourth lifting magnets 4C, 4D increases.

[0072] On the other hand, also in the hoisting beam device 10 according to this embodiment, when the motor 21 of the drive unit 20 is reversed to rotate the output gear 23 counterclockwise, each member moves in the direction opposite to that described above. As a result, the first to fourth lifting magnets 4A to 4D all move in a direction approaching the longitudinal center of the main body 2. That is, in this case, each lifting magnet 4 moves so that the gap between the first and second lifting magnets 4A, 4B and the third and fourth lifting magnets 4C, 4D narrows.

[0073] With the above configuration, the fifth sprocket 39 and the seventh sprocket 42 are coaxial, so that the longitudinal ranges of the main body 2 in which the roller chains 41 and 44 are arranged overlap each other. Therefore, as shown in Figure 5, the movement range RA of the first lifting magnet 4A on the side closer to the longitudinal center of the main body 2 and the movement range RB of the second lifting magnet 4B on the side farther from the center overlap.

[0074] Furthermore, since the ninth sprocket 46 and the eleventh sprocket 49 are coaxial, the longitudinal ranges of the main body 2 in which the roller chains 48 and 51 are arranged overlap each other. Therefore, as shown in Figure 5, the movement range RC of the third lifting magnet 4C on the side closer to the longitudinal center of the main body 2 and the movement range RD of the fourth lifting magnet 4D on the side farther from the center overlap.

[0075] As described above, in the suspension beam device 10 of this embodiment, it is possible to move multiple lifting magnets 4 over a wider range relative to the main body 2, compared to the suspension beam device 100 of the comparative example shown in Figure 3. In particular, it is possible to expand the range of movement of the first to fourth lifting magnets 4A to 4D toward the center of the main body 2. Therefore, even if the hanging load A is short and heavy, the first to fourth lifting magnets 4A to 4D can be gathered near the center in the longitudinal direction of the main body 2, as in the state shown in Fig. 4, and the hanging load A can be magnetically attracted by the four lifting magnets 4, allowing it to be transported safely.

[0076] In other words, in the lifting beam device 10 of this embodiment, it is possible to move multiple lifting devices 4 over a wide range relative to the main body 2, compared to the comparative example lifting beam device 100 shown in Figure 3, making it possible to lift a variety of hanging objects A. In particular, since it is possible to expand the range of movement of the multiple hoisting devices 4 toward the center of the main body 2, even if the hanging object A is short and heavy, it is possible to gather the multiple hoisting devices 4 near the longitudinal center of the main body 2, as in the state shown in Figure 4, and lift the hanging object A with the multiple hoisting devices 4 to transport it safely.

[0077] [Third embodiment] 6 is a diagram showing the configuration of a suspension beam device 11 according to the third embodiment. In this embodiment, members having the same functions as those in the first and second embodiments are denoted by the same reference numerals as those in the first and second embodiments, and descriptions thereof will be omitted. In this embodiment, the configuration of the driving unit 20 is similar to that of the first and second embodiments.

[0078] In this embodiment, the configuration of the transmission unit 30 is different from that of the first and second embodiments. In this embodiment, the transmission unit 30 comprises a plurality of sprockets attached to the main body unit 2 and a roller chain stretched across the plurality of sprockets, but the manner in which the sprockets, roller chain, and trolley are attached differs from the first and second embodiments.

[0079] The transmission unit 30 in this embodiment will be specifically described below. In this embodiment, a thirteenth sprocket 53 (described later) is coaxial with the drive unit sprocket 24 of the drive unit 20 .

[0080] In this embodiment, similar to the first embodiment, a pair of thirteenth and fourteenth sprockets 53 and 54 spaced apart in the longitudinal direction are attached inside the main body 2. The thirteenth and fourteenth sprockets 53 and 54 are arranged so that their tooth tips face each other in the longitudinal direction.

[0081] The thirteenth sprocket 53 is disposed in the center of the main body 2 in the longitudinal direction, and the fourteenth sprocket 54 is disposed on one end side of the main body 2 in the longitudinal direction. In addition, on the first trolley 3A, that is, the trolley 3A closer to the center of the main body 2 in the longitudinal direction, a fifteenth sprocket 56 and a sixteenth sprocket 57 are arranged side by side in the longitudinal direction of the main body 2.

[0082] A roller chain 55A is stretched over the thirteenth and fourteenth sprockets 53 and 54. The roller chain 55A, which is looped around the 13th sprocket 53, is looped around the 15th sprocket 56 provided on the first trolley 3A closer to the longitudinal center of the main body 2, and its end is fixed to the main body 2. Further, an end of the roller chain 55A wound around the fourteenth sprocket 54 is fixed to the second trolley 3B on the side farther from the center of the main body 2 in the longitudinal direction.

[0083] In addition, an end of another roller chain 55B is fixed to the second trolley 3B. The roller chain 55B is looped around a sixteenth sprocket 57 provided on the first trolley 3A, and has one end fixed to the main body 2.

[0084] In this embodiment, the first lifting magnet 4A suspended from the first trolley 3A is the lifting magnet closer to the longitudinal center of the main body 2, and the second lifting magnet 4B suspended from the second trolley 3B is the lifting magnet farther from the longitudinal center of the main body 2.

[0085] On the other hand, the main body 2 is configured in the same manner from the center to the other end. That is, inside the main body 2, a pair of seventeenth sprockets 59 and eighteenth sprockets 60 are attached, spaced apart in the longitudinal direction. The seventeenth and eighteenth sprockets 59, 60 are arranged so that their tooth tips face each other in the longitudinal direction.

[0086] The seventeenth sprocket 59 is disposed in the center of the main body 2 in the longitudinal direction, and is disposed in the vicinity of the thirteenth sprocket 53. The eighteenth sprocket 60 is disposed on the other end side of the main body 2 in the longitudinal direction.

[0087] The thirteenth sprocket 53 is provided with a gear 58 that is coaxial with the thirteenth sprocket 53. Similarly, the seventeenth sprocket 59 is provided with a gear 64 that is coaxial with the seventeenth sprocket 59. The gear 58 and the gear 64 mesh with each other, and the driving force of the driving unit 20 is transmitted to the seventeenth sprocket 59 via the gears 58 and 64 .

[0088] Furthermore, on the third trolley 3C, that is, the trolley 3C closer to the center of the main body 2 in the longitudinal direction, a 19th sprocket 62 and a 20th sprocket 63 are arranged side by side in the longitudinal direction of the main body 2.

[0089] A roller chain 61A is stretched between the seventeenth and eighteenth sprockets 59, 60. The roller chain 61A, which is looped around the 17th sprocket 59, is looped around the 19th sprocket 62 provided on the third trolley 3C closer to the longitudinal center of the main body 2, and its end is fixed to the main body 2. Additionally, an end of the roller chain 61A wound around the eighteenth sprocket 60 is fixed to the fourth trolley 3D on the side farther from the center of the main body 2 in the longitudinal direction.

[0090] Additionally, an end of another roller chain 61B is fixed to the fourth trolley 3D. The roller chain 61B is looped around a twentieth sprocket 63 provided on the third trolley 3C, and has one end fixed to the main body 2.

[0091] In this embodiment, the third lifting magnet 4C suspended from the third trolley 3C is the lifting magnet closer to the longitudinal center of the main body 2, and the fourth lifting magnet 4D suspended from the fourth trolley 3D is the lifting magnet farther from the longitudinal center of the main body 2.

[0092] The operation of the hoisting beam device 11 according to this embodiment configured as above will be described with reference to FIG. In the following description, the rotation direction of each member is indicated as clockwise rotation or counterclockwise rotation according to the drawings such as FIG.

[0093] When the motor 21 of the drive unit 20 is driven to rotate the output gear 23 clockwise, the rotation is transmitted to the drive unit sprocket 24 via the motor roller chain 25, causing the drive unit sprocket 24 to rotate clockwise. When the drive sprocket 24 rotates clockwise, the rotation is transmitted to the thirteenth sprocket 53 of the transmission unit 30, which is provided coaxially with the drive sprocket 24, causing the thirteenth sprocket 53 to rotate clockwise.

[0094] When the thirteenth sprocket 53 rotates clockwise, the roller chain 55A is sent clockwise, causing the fourteenth sprocket 54 to rotate clockwise. Then, the second trolley 3B attached to the roller chain 55A moves in the longitudinal direction of the main body 2 due to the rotation of the thirteenth and fourteenth sprockets 53, 54.

[0095] Furthermore, when the second trolley 3B moves in the longitudinal direction of the main body 2, the roller chain 55B is pulled by the second trolley 3B and moves in the longitudinal direction of the main body 2. At the same time, the roller chain 55A is fed out from below the thirteenth sprocket 53 in the longitudinal direction of the main body 2.

[0096] As a result, the fifteenth sprocket 56 and the sixteenth sprocket 57 rotate clockwise, and the first trolley 3A moves in the longitudinal direction of the main body 2. At this time, the 15th sprocket 56 and the 16th sprocket 57 move in the longitudinal direction of the main body 2 at half the speed of the roller chains 55A and 55B according to the pulley principle. Therefore, in this embodiment, the first trolley 3A moves in the same direction as the second trolley 3B, i.e., to the left in the figure, but at half the speed of the second trolley 3B.

[0097] As a result, the first lifting magnet 4A and the second lifting magnet 4B suspended from the first trolley 3A and the second trolley 3B, respectively, move to the left side in the figure. That is, in this case, the first and second lifting magnets 4A and 4B each move in a direction away from the longitudinal center of the main body 2. The first lifting magnet 4A moves at half the speed of the second lifting magnet 4B.

[0098] Furthermore, when the drive sprocket 24 rotates clockwise as described above, the rotation is transmitted to the seventeenth sprocket 59 via the gears 58 and 64, causing the seventeenth sprocket 59 to rotate counterclockwise.

[0099] When the seventeenth sprocket 59 rotates counterclockwise, the roller chain 61A is sent counterclockwise, causing the eighteenth sprocket 60 to rotate counterclockwise. Then, the rotation of the seventeenth and eighteenth sprockets 59, 60 causes the fourth trolley 3D attached to the roller chain 61A to move in the longitudinal direction of the main body 2.

[0100] Furthermore, when the fourth trolley 3D moves in the longitudinal direction of the main body 2, the roller chain 61B is pulled by the fourth trolley 3D and moves in the longitudinal direction of the main body 2. At the same time, the roller chain 61A is fed out from below the seventeenth sprocket 59 in the longitudinal direction of the main body 2.

[0101] As a result, the 19th sprocket 62 and the 20th sprocket 63 rotate counterclockwise, and the third trolley 3C moves in the longitudinal direction of the main body 2. At this time, the 19th sprocket 62 and the 20th sprocket 63 move in the longitudinal direction of the main body 2 at half the speed of the roller chains 61A and 61B according to the pulley principle. Therefore, in this embodiment, the third trolley 3C moves in the same direction as the fourth trolley 3D, i.e., to the right in the figure, but at half the speed of the fourth trolley 3D.

[0102] As a result, the third lifting magnet 4C and the fourth lifting magnet 4D suspended from the third trolley 3C and the fourth trolley 3D, respectively, move to the right in the figure. That is, in this case, the third and fourth lifting magnets 4C and 4D each move in a direction away from the longitudinal center of the main body 2. The third lifting magnet 4C moves at half the speed of the fourth lifting magnet 4D.

[0103] In this case, the lifting magnets 4 move so that the gap between the first and second lifting magnets 4A, 4B and the third and fourth lifting magnets 4C, 4D increases.

[0104] On the other hand, also in the hoisting beam device 11 according to this embodiment, when the motor 21 of the drive unit 20 is reversed to rotate the output gear 23 counterclockwise, the respective members move in the opposite direction to that described above. Therefore, the first to fourth lifting magnets 4A to 4D all move in a direction approaching the center of the main body 2 in the longitudinal direction. At this time, the first and third lifting magnets 4A and 4C move at half the speed of the second and fourth lifting magnets 4B and 4D.

[0105] In this case, the lifting magnets 4 are moved so that the gap between the first and second lifting magnets 4A and 4B and the third and fourth lifting magnets 4C and 4D narrows.

[0106] With the above configuration, when the first and second lifting magnets 4A and 4B move away from the longitudinal center of the main body 2, both the first lifting magnet 4A and the second lifting magnet 4B expand from a position close to the center, but the second lifting magnet 4B moves twice the distance of the first lifting magnet 4A. Therefore, as shown in Figure 6, the movement range RA of the first lifting magnet 4A on the side closer to the longitudinal center of the main body 2 and the movement range RB of the second lifting magnet 4B on the side farther from the center overlap.

[0107] Furthermore, when the third and fourth lifting magnets 4C and 4D move away from the longitudinal center of the main body 2, both the third lifting magnet 4C and the fourth lifting magnet 4D expand from a position close to the center, but the fourth lifting magnet 4D moves twice the distance of the third lifting magnet 4C. Therefore, as shown in Figure 6, the movement range RC of the third lifting magnet 4C on the side closer to the longitudinal center of the main body 2 and the movement range RD of the fourth lifting magnet 4D on the side farther from the center overlap.

[0108] As described above, in the suspension beam device 11 of this embodiment, it is possible to move multiple lifting magnets 4 over a wider range relative to the main body 2, compared to the suspension beam device 100 of the comparative example shown in Figure 3. In particular, it is possible to expand the range of movement of the first to fourth lifting magnets 4A to 4D toward the center of the main body 2. Therefore, even if the hanging load A is short and heavy, the first to fourth lifting magnets 4A to 4D can be gathered near the center in the longitudinal direction of the main body 2, as in the state shown in Fig. 4, and the hanging load A can be magnetically attracted by the four lifting magnets 4, allowing it to be transported safely.

[0109] In other words, in the lifting beam device 11 of this embodiment, it is possible to move multiple lifting devices 4 over a wider range relative to the main body 2, compared to the comparative example lifting beam device 100 shown in Figure 3, making it possible to lift a variety of hanging objects A. In particular, since it is possible to expand the range of movement of the multiple hoisting devices 4 toward the center of the main body 2, even if the hanging object A is short and heavy, it is possible to gather the multiple hoisting devices 4 near the longitudinal center of the main body 2, as in the state shown in Figure 4, and lift the hanging object A with the multiple hoisting devices 4 to transport it safely.

[0110] It goes without saying that the present invention is not limited to the above-described embodiments, and can be modified as appropriate without departing from the spirit of the present invention. For example, in each of the above embodiments, a suspension beam device in which the longitudinal length of the main body 2 is fixed is described, but the present invention can also be applied to other types of suspension beam devices, such as a suspension beam device in which both longitudinal ends of the main body 2 are configured to be extendable and retractable. Configuration examples of the present disclosure are described below. (1) An elongated main body portion; a plurality of trolleys supported movably in the longitudinal direction of the main body and each having a hoisting device suspended therefrom; a drive unit for moving the plurality of trolleys; a transmission unit capable of transmitting the driving force of the drive unit to the plurality of trolleys to move each of the plurality of trolleys; Equipped with The movement range of the suspender on the side closer to the center of the longitudinal direction of the main body and the movement range of the suspender on the side farther from the center are formed to overlap. Lifting beam device. (2) The transmission unit includes a plurality of sprockets attached to the main body unit, and a roller chain wound around the plurality of sprockets. The suspension beam device described in (1) above. (3) The plurality of trolleys are respectively attached to the roller chain and are movable in the longitudinal direction of the main body by rotation of the sprocket. The suspension beam device described in (2) above. (4) A plurality of the roller chains are arranged in the longitudinal direction of the main body portion, Among the plurality of trolleys, a predetermined number of two or more trolleys are attached to one of the roller chains, and the plurality of trolleys are attached to the plurality of roller chains, respectively; The predetermined number of trolleys attached to the single roller chain are attached so that their movement ranges overlap each other. The suspension beam device described in (3) above. (5) The plurality of trolleys are attached one by one to one of the roller chains, The roller chains are arranged so that the roller chains overlap each other in the longitudinal range of the main body portion in which the roller chains are arranged. The suspension beam device described in (3) above. (6) The diameter of the sprocket on which the roller chain to which the trolley attached on the side farther from the center in the longitudinal direction of the main body is stretched is larger than the diameter of the sprocket on which the roller chain to which the trolley attached on the side closer to the center in the longitudinal direction of the main body is stretched. The suspension beam device described in (5) above. (7) Among the sprockets on which the roller chain having the trolley attached farther from the longitudinal center of the main body is stretched, the sprocket on the side closer to the center and the sprocket on which the roller chain having the trolley attached closer to the longitudinal center of the main body is stretched closer to the center are coaxial. A suspension beam device as described in (5) or (6) above. (8) The trolley on the side closer to the center of the longitudinal direction of the main body has two sprockets arranged side by side in the longitudinal direction of the main body, The roller chain is stretched over the plurality of sprockets attached to the main body. One end of the roller chain is wound around one of the sprockets provided on the trolley on the side closer to the center of the longitudinal direction of the main body and fixed to the main body, and the other end of the roller chain is fixed to the trolley on the side farther from the center of the longitudinal direction of the main body, The end of another roller chain is fixed to the trolley on the side farther from the longitudinal center of the main body, and the other roller chain is looped around the other sprocket provided on the trolley on the side closer to the longitudinal center of the main body and fixed to the main body. The suspension beam device described in (2) above. (9) The trolley farther from the longitudinal center of the main body is attached to a portion of the roller chain between the sprocket farther from the center of the two sprockets arranged in parallel on the trolley closer to the center and the sprocket farther from the center of the plurality of sprockets attached to the main body. The suspension beam device described in (8) above. (10) The drive unit includes one motor. A suspension beam device described in any one of (1) to (9) above. [Explanation of symbols]

[0111] 1, 10, 11 Lifting beam device 2 Main body 3, 3A~3D Trolley 4, 4A~4D Lifting Magnets 20 Drive unit 21 Motor 30 Transmission Unit 31st sprocket 33 etc. roller chain RA~RD Lifting magnet movement range

Claims

1. An elongated main body portion; a plurality of trolleys supported movably in the longitudinal direction of the main body and each having a hoisting device suspended therefrom; a drive unit for moving the plurality of trolleys; a transmission unit capable of transmitting the driving force of the drive unit to the plurality of trolleys to move each of the plurality of trolleys; Equipped with The movement range of the suspender on the side closer to the center of the longitudinal direction of the main body and the movement range of the suspender on the side farther from the center are formed to overlap, the transmission unit includes a plurality of sprockets attached to the main body unit and a roller chain wound around the plurality of sprockets, The plurality of trolleys are respectively attached to the roller chain and are movable in the longitudinal direction of the main body by rotation of the sprocket; Furthermore, each of the plurality of trolleys is attached to one of the roller chains, The roller chains are arranged so that the roller chains overlap each other in the longitudinal range of the main body portion in which the roller chains are arranged. Lifting beam device.

2. The diameter of the sprocket on which the roller chain to which the trolley attached on the side farther from the center in the longitudinal direction of the main body is stretched is larger than the diameter of the sprocket on which the roller chain to which the trolley attached on the side closer to the center in the longitudinal direction of the main body is stretched. The suspension beam device according to claim 1.

3. Among the sprockets on which the roller chain having the trolley attached farther from the longitudinal center of the main body is stretched, the sprocket on the side closer to the center and the sprocket on which the roller chain having the trolley attached closer to the longitudinal center of the main body is stretched closer to the center are coaxial. The suspension beam device according to claim 1 or 2.

4. The drive unit includes one motor. The suspension beam device according to any one of claims 1 to 3.

Images