JPS6131037B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a prefabricated crane that has four poles as legs, a rectangular frame placed on the poles, and whose movement range is within the frame.
Attachment and removal of items to lathes, milling machines, pole machines, etc.
Attachment and removal of molds to die casting, presses, etc., and
This field relates to a prefabricated square crane used for work that involves repeatedly loading and unloading items into and out of bathtubs during painting and heat treatment, as well as work such as maintenance and repair of machinery.

Various types of prefabricated cranes have been used in the past,
It was not possible to freely change the shape of the crane to change the movement range of the trolley, and the range of use was limited. Furthermore, during the assembly process, the entire assembly must be accurately assembled, and a slight misalignment may cause the trolley to become unable to move.

In view of this point, the present invention provides a square crane whose assembled shape can be freely changed and whose trolley can be reliably moved even if some errors occur during assembly.

An embodiment of the present invention will be described below with reference to the drawings.

First, to explain the assembled state of the crane as shown in Fig. 1, four poles 1 of the same length are used, each having a cylindrical shape and supporting the load of the crane, and each pole is arranged vertically and in a rectangular shape. A corner fitting 2 for connecting a rail 4 and a side frame 5, which will be described later, is fixed to the top of the pole 1. This corner fitting 2 has a mounting table 6 whose top plane is horizontal, and rails 4 having a rectangular cross section are placed on this mounting table 6 so that they are parallel to each other. 7, it is removably fixed to the mounting table 6. Also, rail 4
A pair of side frames 5 are placed parallel to each other on a mounting table 6 in a direction perpendicular to the side frames 5 and are removably fixed by a presser plate 7.

In other words, the rail 4 and the side frame 5 form a rectangular frame body.

A fixed guide device 8 and a sliding guide device 9 are mounted on each of the rails 4 so as to be movable in the length direction of the rail 4. Trolley rail 10 whose tip is held movably in sliding guide device 9
is fixed with a presser plate 11. This trolley rail 1
A trolley 13 with a chain block 12 suspended thereon is placed movably on a trolley rail 10.

Tie corners 14 are removably fixed to the outer periphery of the pole 1 at a slight distance from the upper end of the pole 1, and a long pipe 15 is connected to the tie corner 14 in parallel with the rail 4 and short in parallel with the side frame 5. The pipes 16 are respectively locked. After locking the long and short pipes 15 and 16, a wire 17 is wound around the outer periphery of the four poles 1, and both ends of the wire 17 are tightened with turnbuckles 18, so that each pipe 15 and 16 is connected to the tie corner 14.
to stabilize it.

Next, the corner fitting 2 will be explained with reference to FIG. 2. A cylinder 19 has a mounting table 6 fixed thereon, which is a pair of flat plates whose top surfaces are horizontally provided, and extends vertically downward. On one side of the cylinder body 19
A notch 20 is formed in the axial direction. A tightening band 22 formed with a flange is fixed to the upper and lower ends of the cylinder 19 at a distance from each other at both ends. The cylindrical body 19 can be fixed onto the pole 1. The above-mentioned mounting stand 6
are positioned so that their axes are perpendicular to each other, and the lower surface of this mounting table 6 and the side surface of the cylinder 19 are connected by a reinforcing plate 23, and the vicinity of the lost end of each mounting table 6 is They are connected with rods 24 for reinforcement. Further, the mounting table 6 has screw holes 26 for fixing the side frame 5, and four of the screw holes 26 are formed in a row so that the screw holes 26 can be used according to the width of the rail 4.

The fixed guide device 8 is shown in FIG. 3, and is located above the rail 4 and has two bearing plates 27 arranged in parallel in the same direction as the rail 4.
The upper surface of the bearing plate 7 is connected to the bearing plate 27 by a frame 28 provided at right angles. Shaft grooves 2 are provided on both sides of the lower surface of the bearing plate 27.
9 is formed, and a roller 30 that rotates on the upper surface of the rail 4 is rotatably mounted in this shaft groove 29.

A shaft fixing channel 31 having a U-shaped cross section is provided at both ends of the bearing plate 27 to connect the two bearing plates 27.
, and on both sides of this shaft fixing channel 31 there are V grooves 3 at two locations each for fixing the support shaft.
Form a notch 2. A support shaft 34 hangs down and engages with the V-groove 32 so as to clamp the rail 4, and a mounting plate 35 is provided on the outside of the support shaft 34 to be removably fastened to the shaft fixing channel 31 with bolts 36. They abut and tighten and fix the support shaft 34. A roller 33 that rotates on the side surface of the rail 4 is pivotally supported at the lower end of the support shaft 34 . At the four corners of the upper surface of the pedestal 28, two consecutive screw holes 37 are provided in a straight line so as to be parallel to the rail 4.
7 is screwed with a bolt 38 that passes through the presser plate 11 that is in contact with the top surface of the trolley rail 10,
The trolley rail 10 is fixed on the frame 28.

Next, the sliding guide device 9 is shown in FIG. 4, and is located above the rail 4 and has two bearing plates 39 arranged in parallel in the same direction as the rail 4. A shaft support plate 40 provided perpendicularly to this connection plate 39 connects them. A shaft groove 41 is formed on both sides of the lower surface of the shaft support plate 39, and a roller 42 that rotates on the upper surface of the rail 4 is rotatably mounted in the shaft groove 41. A shaft fixing channel 43 having a U-shaped cross section is fixed to both ends of the bearing plate 39, and this shaft fixing channel 43 connects the two bearing plates 39.
V-grooves 44 for fixing the support shaft are cut out at two places on each side. A support shaft 45 hangs down and engages with this V-groove 44 in such a manner as to clamp the rail 4, and a bolt 46 is attached to the outside of this support shaft 45.
The shaft fixing channel 43 and the mounting plate 47, which is removably tightened, come into contact with each other to fix the support shaft 45.

A roller 48 that rotates on the side surface of the rail 4 is pivotally supported at the lower end of the support shaft 45 .

Next, the upper surface of the shaft support plate 40 is connected to the bearing plate 3.
A roller 49 that protrudes from the upper surface of the trolley rail 9 and rotates in contact with the lower surface of the trolley rail 10 is supported so that its axis is parallel to the bearing plate 39. This roller 49 has a shaft fixing channel 50 having a U-shaped cross section fixed to the outside of the one bearing plate 39, and V grooves 51 for fixing the supporting shaft at two places on each side of the shaft fixing channel 50. Form a notch. This V groove 51 has the trolley rail 10
A support shaft 53 that supports a roller 52 that rotates on the side surface of the trolley rail 10 is raised and engaged at its tip in a manner to hold the trolley rail 10, and a shaft is fixed to the outside of this support shaft 53 with a bolt (not shown). The support shaft 53 is fixed by contacting the channel 50 with a mounting plate 54 which is removably tightened.

FIG. 5 shows the trolley 13, in which two bearing plates 5 are arranged parallel to each other above the trolley rail 10.
5 is provided in the same direction as the trolley rail 10, and is located outside the center of this bearing plate 55 and abuts a hanging plate 56, and this bearing plate 55 and hanging plate 56 are connected to bolts 57.
Connects and secures.

A shaft groove 58 is cut out on both sides of the lower surface of the bearing plate 55, and a roller 59 that rotates on the upper surface of the trolley rail 10 is rotatably mounted in the shaft groove 58. A shaft fixing channel 60 having a U-shaped cross section is fixed to both ends of the bearing plate 55, and a shaft fixing channel 60 having a U-shaped cross section is fixed to connect the two bearing plates 55, and on each side of the shaft fixing channel 60 there are V holes for fixing a supporting shaft at two places.
A groove 61 is cut out. A support shaft 63, which has a roller 62 rotating on the side surface of the trolley rail 10 at its tip, hangs down and engages with this V groove 61, so as to clamp the trolley rail 10. a mounting plate 65 which is removably tightened is brought into contact with the shaft fixing channel 60 by a bolt 64;
The support shaft 63 is fixed by the clamping force of the shaft fixing channel 60 and the mounting plate 65. The lower end of the suspension plate 56 is bent into a dogleg shape so as to approach the lower surface of the trolley rail 10, and a shackle 66 for suspending the chain block 12 is fixed thereto.

Further, to explain the tie corner 14 with reference to FIG. 6, one end of a connecting band 68 formed of an elastic material is attached to one open end of a U-shaped fitting body 67 whose inner radius is slightly the same as the outer diameter of the pole 1. A detachable engagement pin 69 is fixed to the other end of the connecting band 68 to the other open end of the fitting body 67. When the connecting band 68 and the fitting body 67 are connected by the engaging pin 69, the connecting band 68 and the fitting body 67 form a slightly circular ring, and a nut 70 is installed in the center of the connecting band 68. A fixing screw 71 that moves forward and backward toward the center of the fitting body 67 is screwed into this nut 70. In addition, the opening axes of the fitting body 67 are positioned at right angles at two places on the outer periphery of the fitting body 67, and the inner diameter of the opening axes are set at right angles to the pipes 15-16.
A U-shaped pipe holder 72 having an outer diameter of 1 is opened upward and fixed.

To fix this fitting body 67 to the pole 1, remove the engagement pin 69, insert the pole 1 into the fitting body 67, and then connect the fitting body 67 and the connecting band 68 with the engagement pin 69. , screw in the fixing screw 71 to fix the tie corner 14 to the tightening force pole 1 of the fixing screw 71.

Next, the operation of this embodiment will be explained.

As mentioned above, the pole 1, rail 4, and side frame 5 are assembled using the corner fittings 2,
A rectangular frame body formed by the rail 4 and the side frame 5 is held at a position higher than the ground with which the lower end of the pole 1 is in contact. A fixed guide device 8 and a sliding guide device 9 are placed on the pair of rails 4, respectively, and the rollers 30, 42 of both guide devices 8, 9 rotate on the upper surface of the rail 4, so both guide devices The devices 8 and 9 can move freely in the length direction of the rail 4, and are attached to the support shaft 3.
Since the rollers 33 and 48 pivotally supported at the ends of the guide devices 8 and 45 are in contact with both sides of the rail 4 in a pinching manner, the guide devices 8 and 9 do not fall off the rail 4 even during their movement.

One end of the trolley rail 10 is fixed to the fixed guide device 8 at right angles to the rail 4, and the trolley rail 1
The other end of 0 is placed on the roller 49 of the sliding guide device 9 and is sandwiched between the rollers 52, so that both guide devices 8 and 9 move simultaneously on the rail 4 in the same direction by the movement of the trolley rail 10. Moving.

A trolley 13 is placed on the trolley rail 10, and since the rollers 59 of the trolley 13 rotate on the upper surface of the trolley rail 10, the trolley 13 is placed on the trolley rail 10.
3 can freely move in the length direction of the trolley rail 10, and the roller 62 pivotally supported at the tip of the support shaft 63 comes into contact with both sides of the trolley rail 10 in such a way as to sandwich it, so the trolley 13 moves freely in the length direction of the trolley rail 10. No one will fall off the trolley rail 10.

In this way, the trolley 13 can freely move within the rectangular space surrounded by the rail 4 and the side frame 5 by the fixed guide device 8, the sliding guide device 9, and the trolley rail 10, and the shackle 66 of the hanging plate 56 The chain block 12 suspended from the tube block 12 can be moved at the same time, and the object hooked to the tube block 12 can be easily moved.

In particular, in the present invention, since the fixed guide device 8 and the sliding guide device 9 are guided via the rollers 33 and 48 so that they can move along the rail 4, the trolley 13 is not located in the center of the trolley rail 10 but in the fixed guide device. A force is applied to move the trolley rail 10 in the longitudinal direction of the pair of rails 4 near the end of the trolley rail 10 when the trolley rail 10 is located at an end such as near the device 8 or near the sliding guide device 9. Even if the fixed guide device 8 or the sliding guide device 9
will not stop moving due to frictional resistance. Conventionally, a roll that is attached to a guide device and rolls on the top surface of the rail has a collar that guides the guide device by contacting the side surface of the rail. When a force is applied to the end of the trolley rail for guiding, the magnitude of the force applied to the fixed guide device and the force applied to the sliding guide device are different, and a large frictional force is generated between the collar and the rail, causing the trolley rail to Sometimes it stopped working.
In the present invention, the fixed guide device 8 and the sliding guide device 9 are guided through rollers rolling on the side surfaces of the rails, so there is no frictional force generated as in the conventional case, and there is no possibility that the trolley rail 13 may become stuck. There isn't.

In the operation of this crane, if the rectangular frame formed by the side frame 5 forms the rail 4 into an accurate rectangular shape, and the rail 4 is parallel and horizontal, the trolley rail 10 is moved lightly by both guide devices 8 and 9. However, if the rails 4 are not parallel, the lower surface of the trolley rail 10 rotates to move the rollers 49 of the sliding guide device 9 forward and backward, and the distance between the guide devices 8 and 9 can be changed. Misalignment caused by variations in the interval is absorbed, and the trolley rail 10 moves lightly while maintaining a right angle to the rail 4. Support shaft 53 of sliding guide device 9
The rollers 52 pivotally supported on the trolley rail 10 rotate in contact with both sides of the trolley rail 10, and lightly guide the trolley rail 10 as it moves forward and backward in the sliding guide device 9 direction, and the trolley rail 10 moves in the length direction of the rail 4. When doing so, the sliding guide device 9 is moved by the rollers 52.
Push.

When you have finished using the crane, move the trolley rail 1
0, then loosen the screw 38 and remove the trolley rail 10 from the fixed guide device 8.
and remove both guide devices 8 and 9 from the rail 4. Then, the turnbuckle 18 is loosened, the wire 17 is removed from the tie corner 14, and the pole 1, rail 4, and side frame 5 fixed to the corner fitting 2 are separated.

The crane disassembled in this way consists of the pole 1, rail 4, side frame 5, long pipe 15, short pipe 16, trolley rail 10, corner fittings 2, tie corners 14, fixed guide device 8, and sliding guide. It can be divided into the components of the device 9 and the trolley 13, and is easy to pack and transport, and can be quickly assembled at the next location where the crane will be used.

Further, depending on the conditions of use, the strength of the crane itself may be changed to weaken the strength of the rail 4 and trolley rail 10 for light loads, thereby reducing the weight of the entire component parts. This is rail 4,
This can be done by reducing the cross-sectional shape of the trolley rail 10, but in this change of use, the position of the screw hole 26 that fixes the rail 4 to the corner fitting 2 is moved inward and the rail 4 is clamped. The suitable support shafts 34, 45 are screws 36, 46
Loosen the support shafts 34 and 45 from the shaft fixing channel 3.
1 and 43, and is fixed by mounting plates 35 and 47. Further, for the trolley rail 10 having a small cross-sectional shape, the screw 38 is screwed into the screw hole 37 inside the fixing guide device 8, and the trolley rail 10 is fixed by the holding plate 11.

Further, the support shaft 53 is moved and fixed to the V-groove 51 inside the shaft fixing channel 50, and the side surfaces of the trolley rail 10 are clamped by the rollers 52. In this way, the strength can be changed and the weight can be reduced without changing the device parts other than the rail 4 trolley rail 10.

In addition, when changing the overall shape of the crane to widen the range of movement of the trolley depending on the purpose of use, this can be easily done by replacing the rails 4 and side frames 5 with ones of different lengths and assembling them. I can do it.

As explained above, according to the present invention, one end of the trolley rail is fixed to one guide device, and the other end is held by the other guide device so as to be movable in the longitudinal direction of the trolley rail, so that a square crane can be assembled. Sometimes, even if the parallelism of a pair of rails deviates, the length of the trolley rail connecting the guide devices changes depending on the distance between the guide devices, and the trolley rail can no longer move along the pair of rails. Never. In addition, since the guide device is equipped with rollers that roll on the sides of the rail while holding the rail from both sides, there is a gap between the guide device and the rail even if force is applied to any position in the longitudinal direction of the trolley rail. No frictional forces are generated, and the trolley rail does not become unable to move along a pair of rails as in the past.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a general assembly diagram of a square crane showing an embodiment of the present invention, Fig. 2 is a perspective view of the corner fittings of the above, Fig. 3 is a perspective view of the fixing guide device of the above, and Fig. 4. 5 is a perspective view of the same sliding guide device as above, FIG. 5 is a perspective view of the trolley as above, and FIG. 6 is a perspective view of the tie corner as above. 1...Pole, 2...Corner fittings, 4...Rail,
5...Side frame, 6...Fixed guide device, 9...
Sliding guide device, 10... trolley rail, 13...
Trolley.

Claims (1)

[Claims] 1. Poles are stood upright at each of the four corners of a rectangle, and the upper ends of each pole are removably connected to a pair of mutually parallel rails and a pair of side frames, and A square crane is equipped with a pair of guide devices that are movable along respective rails, a trolley rail is provided between the pair of guide devices, and a trolley that is movable along the trolley rails is mounted on the trolley rail. The guide device includes a roller that rolls on the upper surface of each of the rails, and a roller that rolls on the side surface of each of the rails while sandwiching the rail from both sides. The square crane is fixed to the guide device, and the other end is held by the other guide device so as to be movable in the longitudinal direction of the trolley rail.