JP5288089B2 - Crane mast support system - Google Patents

Description

  The present invention relates to a crane mast support system, and in particular, a crane mast that can reduce the weight of a crane by preventing a moment caused by a load applied to a mast established on a traveling carriage (saddle) from acting on the traveling carriage. It relates to a support system.

Conventionally, although not particularly limited, for example, the stacker crane C establishes a mast 2 on a traveling carriage 1 and moves along the mast 2 as shown in FIG. The elevator 3 provided with the mounting machine is configured to move up and down.
Further, as a recent need, in order to reduce the weight and material of the stacker crane C, it is required to reduce the plate thickness of the traveling carriage 1 that supports the mast 2. However, since the transfer moment is the maximum moment acting on the traveling carriage 1, there is a limit to reducing the saddle plate thickness.

Further, the moment due to the load G placed on the transfer machine is transmitted from the elevator 3 to the traveling carriage 1 via the mast 2 as shown in FIG. In this case, the transfer moment acts on the traveling carriage 1, and as a result, a large wheel load acts on one wheel W1, and a reaction force due to the transfer acts on the other wheel W2 as a wheel load.
For this reason, there is a limit to the reduction of members such as rail receivers, adjusters, etc. under the traveling rail R that guides the traveling of the stacker crane C. Thickness is required, and it is necessary to set the allowable load of the adjuster A to a large value. Therefore, there is a problem that the equipment cost becomes expensive.

  In view of the problems of the mast support of the crane, the present invention reduces the allowable load of the rail receiver, the adjuster, etc. by joining the base end of the mast of the crane and the traveling carriage with a structure in which the moment does not act. It is an object of the present invention to provide a mast support system for a crane that can be used.

In order to achieve the above object, a crane mast support system according to the present invention includes a transfer machine for transferring a transfer object in a direction perpendicular to the traveling direction of a crane to a mast established on a traveling carriage that can travel. It supports the upper part of the mast so that it can travel along the guide rail via the guide roller, and the mast is perpendicular to the traveling direction of the crane with a pin structure so that transfer moment does not act on the traveling carriage on the lower part of the mast. A mast support system for a crane that is capable of swinging in a direction and joined to a traveling carriage , wherein the pin structure is disposed horizontally on the traveling carriage side and fixed in the traveling direction of the crane, and the hinge pin A hinge pin mounting bracket that fits the upper surface of the hinge pin and a lower hinge pin mounting bracket that fits the lower surface of the hinge pin are used to connect the hinge pin to a circular hinge pin. And embraced by the embracing hole, and is characterized in that so as to disposed fixed to the mast lower end face be fixed to the hinge pin mounting bracket on both sides of the lower hinge pin mounting bracket by bolts.

In this case, a rubber layer can be provided on the outer periphery of the hinge pin and can be held by the hinge pin mounting bracket via the rubber layer.

Further, the mast base end portion can be supported on the traveling carriage via the mast support arm device.

  According to the crane mast support system of the present invention, the upper part of the mast established on the traveling carriage that can travel is supported so as to be able to travel along the guide rail via the guide roller, and the mast base end is used as the traveling carriage. The pin structure prevents the transfer moment from acting, and the mast can be swung in a direction perpendicular to the traveling direction of the crane so that it can be joined to the traveling carriage. By acting in the transfer direction (lateral direction) instead of the direction (downward direction), the wheel load does not increase, the allowable load on the traveling carriage, rail plate, and adjuster can be reduced, and the stacker crane weight and materials are reduced. Can be achieved.

The pin structure is held by a hinge pin that is disposed and fixed on the traveling carriage side, a hinge pin mounting bracket that fits the upper surface of the hinge pin, and a lower hinge pin mounting bracket that fits the lower surface of the hinge pin. by so arranging fixed to mast lower end, it can be fixed mast soft structurally traveling vehicle easily and can be securely absorbed transfer moment applied to the mast.

  Further, by arranging a rubber layer on the outer periphery of the hinge pin and holding it between the hinge pin mounting bracket and the lower hinge pin mounting bracket via the rubber layer, the metal of the hinge pin and the hinge pin mounting bracket can be directly connected to each other. Since there is no contact, dust generation due to friction can be suppressed, and the transfer moment can be easily absorbed by the rubber layer.

  In addition, by supporting the mast base end portion on the traveling carriage via the mast support arm device, the mast base end portion is firmly supported with a simple configuration to prevent the mast from falling more than allowable. be able to.

  Embodiments of a crane mast support system according to the present invention will be described below with reference to the drawings.

  1 to 8 show an embodiment of a crane mast support system according to the present invention.

Although the crane of this invention is not specifically limited, For example, when conveying conveyance objects, such as a liquid crystal substrate, in a liquid crystal manufacturing factory etc., a stacker crane is used. The stacker crane C travels along a traveling path or a traveling rail R. This stacker crane C has a mast 2 established on a traveling carriage 1 (saddle), and includes a transfer machine 4 along the mast 2. The elevating platform 3 is moved up and down, and a guide roller 8 protrudes from the upper portion of the mast 2 and is supported by the guide rail 9 so that the mast 2 does not fall down. Yes.
The elevator 3 is moved up and down by connecting a counterweight 5 to the other end of the wire rope W having one end connected to the elevator 3, meshing the wire rope W, and a sprocket wheel 6 disposed on the upper portion of the mast. This is done by driving.

  The mast 2 established on the traveling carriage 1 is not rigidly connected like conventional welding or bolting, but is perpendicular to the traveling direction of the stacker crane C by the traveling carriage 1 and the pin structure P. Are coupled so as to be swingable, thereby absorbing the transfer moment applied to the mast base end.

  As shown in FIGS. 4 to 5, the pin structure P is configured such that a flat mounting plate 10 is fixed to the base end portion of the mast 2 by bolting or welding or the like so as to be integrated. A hinge pin mounting bracket 11 projectingly fixed to the lower surface, a hinge pin 12 fixed to the traveling carriage 1 side, and disposed so as to face the hinge pin 12 from above and below, and holding the hinge pin 12 in cooperation with the hinge pin mounting bracket 11. The lower hinge pin mounting bracket 13 and the hinge pin 12 are fixed to the traveling carriage 1 side, and the hinge pin fixing bracket 14 is provided on both sides of the hinge pin mounting bracket portion.

The hinge pin mounting bracket 11 is integrally fixed to the mounting plate 10 by welding or the like, and is formed by forming a semi-arc-shaped hinge pin fitting groove 11a in the center portion on the lower surface side. The lower hinge pin mounting bracket 13 disposed so as to be opposed is formed by forming a semicircular arc hinge pin fitting groove 13a at the center of the upper surface.
Thus, when the hinge pin mounting bracket 11 and the lower hinge pin mounting bracket 13 are opposed to each other, a circular hinge pin holding hole for holding the hinge pin 12 is formed by matching the hinge pin fitting grooves 11a and 13a. To do.
As shown in FIG. 4, the lower hinge pin mounting bracket 13 is fixed to the hinge pin mounting bracket 11 with bolts 11b on both sides of the lower hinge pin mounting bracket 13 as shown in FIG.

  The hinge pin fixing brackets 14 are disposed on both left and right sides of the hinge pin mounting bracket portion so as not to interfere with the hinge pin mounting brackets 11 and 13, and are fixed to the mounting plate 15 of the traveling carriage 1 by welding or the like. Both ends of 12 are fixed with bolts 16 and 16. In this case, the lower hinge pin mounting bracket 13 is disposed in the space between the left and right hinge pin fixing brackets 14, 14, but has a gap between the upper surface of the mounting plate 15. .

As shown in FIG. 5, the hinge pin 12 has its length determined so as to protrude from both ends of the hinge pin fitting grooves 11a and 13a, and both ends are connected to the left and right hinge pin fixing brackets 14 and 14 by bolts 16 and 16, respectively. While being fixed, a rubber layer 12r on the outer periphery of the central portion of the hinge pin 12 is not particularly limited. For example, a urethane rubber layer is integrally formed, and the hinge pin mounting bracket 11 and the lower portion are formed through the rubber layer 12r. The hinge pin 12 is held by the hinge pin mounting bracket 13.
As a result, the mast base end portion is coupled to the traveling carriage 1 by the pin structure P, and the hinge pin central portion is adapted to the deflection in the traveling direction of the traveling carriage 1 and the transfer moment and the deflection in the direction perpendicular to the traveling direction of the traveling carriage 1. The rubber layer 12r formed on the outer periphery is absorbed by elastic deformation within an allowable range.

Further, the mast support arm device 7 is used to move the base end side of all the masts 2 by the mast supporting arm device 7 so that the mast 2 established on the traveling carriage 1 does not fall beyond the allowable range of elastic deformation of the rubber layer 12r of the hinge pin 12. 1 to support.
As shown in FIGS. 6 to 8, the mast support arm device 7 is not particularly limited to the arm mounting brackets 20 and 21, the arms 22, and the arm mounting brackets 20 and 21. The pipe-shaped arm 22 is connected to the pin structure P1.
As shown in FIG. 6, the arm mounting bracket 20 is fixed to the mast base end side so as to protrude obliquely downward with a bolt or the like, and is joined to the arm 22 via a hinge pin at the tip thereof. The arm mounting bracket 21 is fixed with a bolt or the like so as to protrude on the traveling carriage 1 and is joined to the arm 22 via a hinge pin at the tip.

The pin structure P1 that joins the arm mounting brackets 20 and 21 and the arm 22 has the same configuration as the pin structure P of the mast 2 established on the traveling carriage 1.
Two hinge pin mounting brackets 23, 23 are disposed and fixed at the end of the arm 22 so as to face each other with a predetermined interval therebetween, and the hinge pin 24 is disposed between the hinge pin mounting brackets 23, 23. Then, both ends of the hinge pin 24 are fixed to the hinge pin mounting brackets 23 and 23 with bolts 25 and 25.

  Further, fixing brackets 26 are fixed to the end portions of both arm mounting brackets 20 and 21 by bolts or the like on the arm mounting brackets 20 and 21 respectively, and are disposed so as to face the fixing brackets 26. The bracket 27 is fixed with bolts. In this case, semicircular arc-shaped hinge pin fitting grooves 26a and 27a are formed at positions facing the fixed bracket 26 and the mounting bracket 27 so that the fixed bracket 26 and the mounting bracket 27 face each other. When arranged in such a manner, a cylindrical hinge pin holding hole is formed.

Similarly to the hinge pin 12, the hinge pin 24 is integrally formed with a rubber layer 24r on the outer periphery of the central portion, and the hinge pin 24 is supported so as to be held between the fixed bracket 26 and the mounting bracket 27 via the rubber layer 24r. To do.
As a result, when the mast 2 is swung by the elastic deformation of the rubber layer 12r of the hinge pin 12 within the allowable range due to the action of the transfer moment, the mast 2 is shaken by the pin structure P1 of the mast support arm device 7. The mast 2 is supported so as not to fall beyond an allowable range by absorbing.

Next, an operation of the crane mast support system of the present invention will be described.
As shown in FIG. 3 (A), a transfer object, not particularly limited, is transferred to the transfer machine 4 provided on the lifting platform 3 of the stacker crane C. For example, when the cassette K is transferred and transferred. The load G of the cassette K is transmitted to the lifting platform position of the mast 2 via the lifting platform 3. The transmitted moment of the mast 2 is dispersed vertically from the position of the elevator platform, and is absorbed by the guide roller 8 at the upper part of the mast. Absorption, which is absorbed by the elastic deformation of the elastic rubber layer 12r formed on the outer periphery of the hinge pin 12 of the pin structure P when the moment is transmitted from the lower part of the mast to the traveling carriage 1 side.

Further, since the pin structure P1 is arranged on both ends of the arm of the mast support arm device 7, the mast base end portion can be supported while absorbing the vibration by the rubber layer 24r of the hinge pin 24 of the pin structure P1. .
Thereby, since no moment acts on the traveling carriage 1, the wheel weight of the traveling carriage 1 can be reduced, so that the allowable load of the rail plate RP and the adjuster A below it can be reduced. It is possible to reduce the weight of the crane C, particularly the weight of the traveling carriage.

  The crane mast support system according to the present invention has been described based on the embodiments. However, the present invention is not limited to the configurations described in the above embodiments, and the configurations are appropriately configured within the scope of the invention. It can be changed.

  In the crane mast support system according to the present invention, the base end portion of the crane mast and the traveling carriage are joined in a structure in which the transfer moment does not act. In addition to being suitably used for crane applications, for example, it can also be used for hoisting machines.

It is the front view which showed one Example of the mast support system of the crane of this invention, and was applied to the stacker crane. It is the same side view. It is explanatory drawing which showed the transfer moment concerning the mast of a crane, (A) shows the transfer moment concerning the mast of the crane of this invention, (B) shows the transfer moment concerning the conventional mast. It is a front view which shows the attachment state of a mast base end part. It is a side surface longitudinal cross-sectional view which shows the attachment state of a mast base end part. It is a front view which expands and shows a mast support arm apparatus part. It is the same side view. It is an expanded sectional view of the pin structure part of a mast support arm device.

C Stacker crane G Transported load P Pin structure P1 Pin structure 1 Traveling carriage (saddle)
2 Mast 3 Lifting platform 4 Transfer machine 5 Counterweight 6 Sprocket wheel 7 Mast support arm device 8 Guide roller 9 Guide rail 10 Mounting plate 11 Hinge pin mounting bracket 11a Hinge pin fitting groove 12 Hinge pin 12r Rubber layer formed on the outer periphery of the hinge pin central portion 13 Lower hinge pin mounting bracket 13a Hinge pin fitting groove 14 Hinge pin fixing bracket 15 Mounting plate 20 Arm mounting bracket 21 Arm mounting bracket 22 Arm 23 Hinge pin mounting bracket 24 Hinge pin 24r Rubber layer formed on the outer periphery of the hinge pin 26 Fixed bracket 26a Mounting bracket 27 Mounting bracket 27a Mounting bracket

Claims (3)

A mast established on a traveling carriage that can run is equipped with a transfer machine that transfers the transported object in a direction perpendicular to the traveling direction of the crane, and the upper part of the mast travels along the guide rail via the guide roller. Of a crane that is supported so that the mast can be swung in a direction perpendicular to the traveling direction of the crane so that no transfer moment acts on the traveling carriage . A mast support system, in which the pin structure is mounted on the traveling carriage side horizontally and fixed in the traveling direction of the crane, and the hinge pin mounting bracket for fitting the upper surface of the hinge pin and the lower surface of the hinge pin are fitted. The lower hinge pin mounting bracket holds the hinge pin through a circular hinge pin holding hole, and both sides of the lower hinge pin mounting bracket Crane mast support system that as fixed by bolts to the hinge pin mounting bracket is characterized in that so as to disposed fixed to the mast lower end surface. The rubber layer is disposed on the outer circumference of the hinge pin, the crane mast support system according to claim 1, characterized in that so as to embrace at hinge pin mounting bracket through the rubber layer. The mast base end portion, the crane mast support system of claim 1 or 2, wherein it has to be supported by the traveling carriage through the mast support arm device.

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