JP2673130B2 - Suspension support device for traveling rail - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for swingably supporting a traveling rail of an overhead traveling crane or the like.

[0002]

2. Description of the Related Art Conventionally, as a device for swingably supporting a traveling rail in an overhead traveling crane, as disclosed in Japanese Utility Model Publication No. 48-38675,
An upper nut with a convex spherical surface on the lower part is screwed onto the upper part of the rod having male threads on the upper and lower ends, and a lower nut with a convex spherical surface on the upper part is screwed onto the lower part of the rod to form a concave on the upper part. An annular upper rod receiving material having a spherical surface is placed on the bottom plate of the upper support metal fitting fixed to the ceiling or the transverse girder, and the convex spherical surface of the upper nut is placed on the concave spherical surface of the upper rod receiving material. The upper portion of the rod is inserted into the inside of the upper rod receiving member and the through hole of the bottom plate, and the lower support bracket fixed to the traveling rail having an I-shaped cross section is provided with a concave spherical surface at the lower part of the upper plate. Engaging the annular lower rod receiving member, the convex spherical surface of the lower nut is fitted into the concave spherical surface of the lower rod receiving member, and the lower portion of the rod is inserted into the lower rod receiving member and the transparent surface of the upper plate. A structure having a structure that is inserted into a hole is known.

[0003]

In the case of the above-described conventional suspension support device for the traveling rail, when the traverse rail is suddenly inverted due to the necessity of work, the traveling rail swings greatly in the lateral direction and moves. , When the traveling rail moves, the rod oscillates. Since the rod is inserted through the relatively small diameter through holes in the upper rod receiving member and the lower rod receiving member, the swing angle is small, and the upper nut Since the upper nut and the upper rod receiving member are in surface contact with each other and the lower nut and the lower rod receiving member are in surface contact with each other, the swing resistance is large. For this reason, an excessive load is applied to each part of the suspension supporting device, and the recovery from the movement of the traveling rail does not proceed smoothly, which is a great obstacle to the progress of work.

[0004]

In order to advantageously solve the above-mentioned problems, in the suspension support device for a traveling rail of the present invention, an upper eye fitting having a ring-shaped head 42 and a female screw cylinder 1 is provided. 2, the upper portion of the vertical threaded rod 3 is screwed into the female threaded tube 1, and the lower portion of the vertical threaded rod 3 is screwed into the female threaded tube 4 of the lower eye fitting 5 having the ring-shaped head 46 and the female threaded tube 4. And the ring-shaped head 42 of the upper eye fitting 2 is arranged in the groove 43 of the downward-opening groove-shaped support metal fitting 21 to form the ring-shaped head. An upper horizontal pin 7 having a diameter smaller than the hole diameter is inserted into the circular hole 45 of 42, the upper horizontal pin 7 is passed through the groove side plate 44 of the support fitting 21, and the ring-shaped head of the upper eye fitting 2 is inserted. 42 and the groove side plate 44 of the support fitting 21 between the upper lateral pillars. Upper eye bracket 2 which is supported on 7 forms a gap which can be reasonably inclined swing, the support bracket 21
Is fixed to the lower part of the upper support member 8, and the lower eye fitting 5
The ring-shaped head portion 46 is disposed in the groove 47 of the upward-opening groove-shaped support fitting 12, and the lower horizontal pin 10 having a diameter smaller than the hole diameter is inserted into the circular hole 49 of the ring-shaped head portion 46. , The lower lateral pin 10 is attached to the groove side plate 4 of the support fitting 12.
8 and a ring-shaped head 4 of the lower eye fitting 5
6 and the groove side plate 48 of the support fitting 12 form a gap in which the lower eye fitting 5 supported by the lower lateral pin 10 can be appropriately tilted and swung, and the traveling rail 13 is provided via the support fitting 12. Suspend and support.

[0005]

According to the present invention, the traveling rail 13 includes the ring-shaped head portions 42, 46 of the eye fittings 2, 5 on the upper and lower portions of the vertical screw rod 3.
To be supported in line contact or point contact through the upper and lower horizontal pins 7 and 10 inserted into the
Since 5 is supported in the upper and lower support brackets 21 and 12 so as to be tiltable and swingable, each part of the suspension device smoothly follows the displacement of the traveling rail in the front-rear direction and the left-right direction. However, excessive load is not applied to each of these parts,
The return movement for shaking is also smooth.

[0006]

4 and 5 show an example of a suspension metal fitting 6 used in an embodiment of the present invention, which has a ring-shaped head 42 with a circular hole 45 and a female screw cylinder at the bottom. The internal threaded cylinder 1 in the upper eye fitting 2 including the
The upper part of the vertical screw rod 3 having the left male screw 14 and the right male screw 15 at the upper and lower ends is screwed together, the female screw cylinder 4 is provided on the upper part, and the lower eye metal fitting 5 having the ring-shaped head 46 having the circular hole 49 is provided. The lower part of the vertical threaded rod 3 is screwed into the female threaded cylinder 4 in the above, and the upper lock nut 16 screwed onto the upper side of the vertical threaded rod 3 is pressed against the lower surface of the female threaded tube 1 in the upper eye fitting 2. The lower lock nut 17 screwed on the lower side of the vertical screw rod 3 is pressed against the upper surface of the female screw cylinder 4 of the lower eye fitting 5, and a flat portion 18 for spanner engagement is provided at the vertical intermediate portion of the vertical screw rod 3. It is provided.

FIG. 6 and FIG. 7 show another example of the hanging metal fitting 6 that can be used in the embodiment of the present invention, in which male threads in the same direction, for example, male threads in the upper portion and the lower portion of the vertical screw rod 3 are formed. Although the right male screw 15 is provided, other configurations are the same as those of the hanging fitting 6 shown in FIGS. 4 and 5.

FIGS. 1 and 3 show a suspension support device for a traveling rail according to an embodiment of the present invention, which uses the suspension fitting 6 shown in FIGS. I
An upper support member 8 made of a steel beam having a shaped cross section is erected and fixed, and a horizontal member 20 and a downward-opening groove-shaped support metal fitting 21 fixed to the lower central portion of the lower member are provided on the lower surface of the lower flange 19 of the upper support member 8. A large number of upper support fittings 9 are arranged at intervals in the longitudinal direction of the upper support member 8, and the horizontal member 20 is fixed to the lower flange 19 by clips 22 and bolts 23.

The upper eye fitting 2 of the hanging fitting 6 is
It has a ring-shaped head 42 having a circular hole 45, and this ring-shaped head 42 is arranged in the groove 43 of the support fitting 21 and has a diameter smaller than that of the circular hole 45 of the upper eye fitting 2. The middle part of the pin 7 is the circular hole 4 of the upper eye fitting 2.
5, the both ends of the upper lateral pin 7 are fitted and inserted into the groove side plates 44 of the support fitting 21, and between the head 42 of the upper eye fitting 2 and the groove side plate 44 of the support fitting 21. Is
A gap is provided in which the upper and lower eye fittings 2 supported by the upper lateral pins 7 penetrating the groove side plate 44 can be appropriately tilted and swung.
A retaining pin 24 is press-fitted into an end portion of the upper horizontal pin 7 so that the hanging metal fitting 6 is supported by the upper horizontal pin 7. Therefore, the upper eye fitting 2 is supported in the circular hole 45 by point contact or line contact with the upper lateral pin 7, and the upper and lower eye fittings 2 are appropriately tilted and rocked between the upper eye fitting 2 and the groove side plate 44 of the support fitting 21. Since there is a gap that can be moved, the hanging bracket 6
Can be swung at a large angle not only in the longitudinal direction of the upper support member 8 but also in the left-right direction, and can further be swung in any direction. Moreover, since the support portion is point or line contact, The swinging is smooth, and therefore, an excessive load is not applied to each part of the suspension supporting device, and the swinging return is smooth.

The bottom plate of the lower support fitting 12 having the upward opening groove shape is attached to the upper center of the upper clamp fitting 25 of the rail clamp 11 by a bolt, and the lower eye fitting 5 of the hanging fitting 6 has a circular hole 49. It has a ring-shaped head portion 46, and this ring-shaped head portion 46 is arranged in the groove 47 of the lower support metal fitting 12, and the middle of the lower horizontal pin 10 having a diameter smaller than the circular hole 49 of the lower eye metal fitting 5. Part is inserted into the circular hole 49 of the lower eye fitting 5, both ends of the lower lateral pin 10 are fitted and inserted into the groove side plates 48 of the lower support fitting 12, and the head 4 of the lower eye fitting 5 is inserted.
6 and the groove side plate 48 of the lower support fitting 12 are provided with a gap through which the lower eye fitting 5 supported by the lower horizontal pin 10 penetrating the groove side plate 48 can be appropriately tilted and swung. A retaining pin 26 is press-fitted into an end portion of the pin 10, and the upper lateral pin 7 and the lower lateral pin 10 are connected to the upper supporting member 8.
It extends parallel to. Therefore, the lower eye fitting 5
Since there is a point or line contact with the lower horizontal pin 10 at one point of the circular hole 49, and there is a gap between the lower eye fitting 5 and the groove side plate 48 of the support fitting 12 so that the lower eye fitting 5 can be appropriately tilted, a hanging fitting. 6 can swing at a large angle not only in the longitudinal direction of the upper support member 8 but also in the left-right direction with respect to the lower support fitting 12 attached to the rail clamp 11.
Further, it can be swung in any direction, and since the supporting portion is in point or line contact, the swinging is smooth, so that an excessive load is not applied to each part of the suspension supporting device, and the swinging motion is prevented. The return is smooth.

Explaining the structure of the rail clamp 11, the lower clamp metal fittings 27 are arranged on both sides of the upper clamp metal fitting 25 in the longitudinal direction, that is, on the lower portions on both sides in the direction perpendicular to the extension direction of the lower horizontal pin 10. The central portion of the upper end of the lower clamp metal fitting 27 is disposed inside the stoppers 28 provided at both ends of the upper clamp metal fitting 25, and the through holes on both ends of the upper plate of the upper clamp metal fitting 25 and the horizontal shape of the lower clamp metal fitting 27 are provided. A tightening bolt 29 is inserted through the through hole of the plate, and the tightening bolt 2
9 upper clamp metal fittings 25 and lower clamp metal fittings 27
And are tightened.

Side plates 31 perpendicular to the left and right sides of the top plate 30
Are bent and connected downward, and horizontal flanges 32 projecting in directions approaching each other are bent and connected to the lower ends of the side plates 31, and upward protrusions 33 are bent and connected to the tip of the horizontal flange 32. Thus, the traveling rail 13 is configured. The traveling rail 13 is arranged so as to extend in parallel with the upper support member 8 and is gripped by the rail clamp 11, and even if the hanging metal fitting 6 swings in an arbitrary direction,
The traveling rail 13 is always held in a horizontal state. However, this rail clamp 11 is merely an example, and another mechanism may be used as long as it has a function of clamping the rail, and the mechanism is not limited to the above mechanism.

By rotating the vertical screw rod 3 in a state where the upper lock nut 16 and the lower lock nut 17 are loosened, the level and levelness of the traveling rail 13 can be adjusted. After making this adjustment, tighten the upper lock nut 16 and the lower lock nut 17,
Vertical screw rod 3 for the upper eye fitting 2 and the lower eye fitting 5
Prevent rotation of

As shown in FIGS. 8 and 9, the two traveling rails 13 are arranged so as to extend in the front-rear direction in a parallel state, and each traverse rail 34 having the same structure as the traveling rail 13 is Wheels 36 of a traveling trolley 35, which is arranged so as to extend in the left-right direction at a lower level than the traveling rails 13, and has no traveling drive device, are mounted on the horizontal flanges 32 of the traveling rails 13, The traverse rail 34 is gripped by a rail clamp 37 attached to the lower portion of the traveling trolley 35. The wheels 40 of the traverse trolley 39 supporting the hoisting machine 38 such as an electric chain block or a manual chain block are mounted on the horizontal flange 41 of the traverse rail 34, and the traverse trolley 3 is
9 also has no traverse drive.

When carrying a load by lifting, a worker manually pulls a chain hanging from the main body of the hoisting machine 38 or a lower hook connected to the lower part of the chain.
The traverse rail 34 is moved in the front-rear direction, and the hoisting machine 38 is moved in the left-right direction, so that the hoisting machine 38 is disposed above a load placed on the floor or a table.

Next, after the load is hoisted by the hoist 38, an operator pushes the load to move the traverse rail 34 in the front-back direction and move the hoist 38 in the left-right direction. The load is moved above the transportation area, and then the hoisting machine 38 is operated to lower the load to unload the load on the floor or a table.

The traverse rail 34 has a long span, and FIG.
As shown in 0, while the traverse rail 34 is being moved in the direction of arrow A, the chain or the like of the hoisting machine 38 at one end of the traverse rail 34 is pulled to suddenly move the traverse rail 3
When one end of 4 is reversed and moved in the opposite direction (arrow B direction), one end of the traverse rail 34 is moved while the other end of the traverse rail 34 is moving in the arrow A direction due to inertia. Since the traveling rail 13 is moved in the direction of the arrow B, the traveling rail 13 largely swings in any direction and laterally moves. In such a case, in the case of the present invention at such a time, the hanging metal fitting 6 can largely swing in an arbitrary direction, thereby allowing a large lateral movement of the traveling rail 13 and absorbing the swing to thereby propel the traveling rail. 13 can be smoothly returned. Furthermore, since the upper eye fitting 2 and the upper lateral pin 7 and the lower eye fitting 5 and the lower lateral pin 10 are in point or linear contact, respectively, the swing resistance can be reduced, and the hanging support device The load applied to each part can be significantly reduced.

[0018]

According to the present invention, the upper part of the vertical screw rod 3 is screwed onto the female screw cylinder 1 of the upper eye fitting 2 having the ring-shaped head 42 and the female screw cylinder 1 to form the ring-shaped head 46.
The lower eye fitting 5 of the lower eye fitting 5 including the female thread cylinder 4 and the lower part of the vertical screw rod 3 is screwed into the hanging fitting 6 of which the length is adjustable, and the ring of the upper eye fitting 2 is formed. The head portion 42 is arranged in the groove 43 of the downwardly-opening groove-shaped support fitting 21, and the upper horizontal pin 7 having a diameter smaller than the hole diameter is inserted into the circular hole 45 of the ring-shaped head portion 42 to form the upper portion. The lateral pin 7 is penetrated through the groove side plate 44 of the support fitting 21,
Further, a gap is formed between the ring-shaped head 42 of the upper eye fitting 2 and the groove side plate 44 of the support fitting 21 so that the upper eye fitting 2 supported by the upper lateral pin 7 can be appropriately tilted and swung. The support fitting 21 is fixed to the lower portion of the upper support member 8, and the ring-shaped head portion 46 of the lower eye fitting 5 is arranged in the groove 47 of the upward-opening groove-shaped support fitting 12 to form the ring-shaped head portion. A lower horizontal pin 10 having a smaller diameter than the hole diameter is inserted into the circular hole 49 of the hole 46, the lower horizontal pin 10 is penetrated into the groove side plate 48 of the support fitting 12, and the ring-shaped head of the lower eye fitting 5 is inserted. 46 and the groove side plate 48 of the support fitting 12
And a lower eye fitting 5 supported by the lower horizontal pin 10 forms a gap in which the lower eye fitting 5 can be appropriately tilted and swung, and a traveling rail 13 is suspended and supported via the support fitting 12. Therefore, according to the present invention, with respect to the upper lateral pin 7 attached to the upper support fitting 9, the hanging fitting 6 is swung at a large angle in an arbitrary direction, and the lower support attached to the rail clamp 11 that grips the traveling rail 13 is supported. The hanging metal fitting 6 can be swung by a large angle with respect to the metal fitting 12, and in combination with these, an unreasonable load is generated in each part of the support metal fitting against the swinging of the traveling rail 13 in the front-back direction and the left-right direction. Absent. Further, since the upper eye fitting 2 and the upper horizontal pin 7 and the lower eye fitting 5 and the lower horizontal pin 10 are in point or line contact with each other, the swing resistance of the hanging fitting 6 can be reduced, and the hanging support device can be provided. The load applied to each part of can be significantly reduced. As described above, according to the present invention, when one end of the traverse rail 34 is suddenly inverted and moved in the opposite direction during the work, the traveling rail 13 largely swings and laterally moves. The hanging metal fitting 6 can be largely swung in any direction, so that an unreasonable load is not generated in each part in the suspended supporting condition, and the swing of the running rail 13 is smoothly absorbed to allow the running rail 13 to move. 13 can be returned smoothly, and workability can be improved.

[Brief description of the drawings]

FIG. 1 is a partially longitudinal front view showing a suspension support device for a traveling rail according to an embodiment of the present invention.

FIG. 2 is a partially longitudinal side view showing a suspension support device for a traveling rail according to an embodiment of the present invention.

FIG. 3 is a vertical sectional front view showing a part of FIG. 1 in an enlarged manner.

FIG. 4 is a front view showing an example of a hanging metal fitting used in an embodiment of the present invention.

5 is a side view of the hanging fitting shown in FIG. 4. FIG.

FIG. 6 is a front view showing another example of the hanging metal fitting that can be used in the embodiment of the present invention.

FIG. 7 is a side view of the suspension fitting shown in FIG.

FIG. 8 is a partially longitudinal front view showing an overhead traveling crane having a suspension supporting device for traveling rails of the present invention.

9 is a partially longitudinal front view showing a part of FIG. 8 in an enlarged manner.

FIG. 10 is a schematic plan view showing an example of lateral movement of a traveling rail.

[Explanation of symbols]

 1 Female screw cylinder 2 Upper eye metal fitting 3 Vertical screw rod 4 Female screw cylinder 5 Lower eye metal fitting 6 Hanging metal fitting 7 Upper horizontal pin 8 Upper support member 9 Upper support metal fitting 10 Lower horizontal pin 11 Rail clamp 12 Lower support metal fitting 13 Running rail 14 Left male screw 15 Right Male Screw 16 Upper Lock Nut 17 Lower Lock Nut 18 Flat Part for Spanner Engagement 19 Lower Flange 20 Horizontal Member 21 Supporting Metal Fitting 22 Clip 23 Bolt 24 Locking Pin 25 Upper Clamping Metal Fitting 26 Locking Pin 27 Lower Clamping Metal Fitting 28 Stopper 29 Tightening bolts 30 Top plate 31 Side plate 32 Horizontal flange 33 Upward projecting ridge 34 Traverse rail 35 Traveling trolley 36 Wheel 37 Rail clamp 38 Hoisting machine 39 Traverse trolley 40 Wheel 41 Horizontal flange 42 Ring head 43 Support metal fitting groove 44 Lifting bracket groove side plate 45 eye fitting circular hole 46 ring-shaped head 47 lower support bracket groove 48 lower support KimuShin groove side plate 49 a ring-shaped circular hole

Claims (1)

(57) [Claims] 1. An upper part of a vertical screw rod 3 is screwed onto the female screw cylinder 1 of an upper eye fitting 2 having a ring-shaped head 42 and a female screw cylinder 1, and a ring-shaped head 46 and a female screw cylinder 4 are provided. The lower eye fitting 5 has a female threaded cylinder 4 which is screwed onto the lower portion of the vertical screw rod 3 to form a hanging fitting 6 whose length is adjustable.
Is placed in the groove 43 of the downward-opening groove-shaped support fitting 21, and the upper horizontal pin 7 having a diameter smaller than the hole diameter is inserted into the circular hole 45 of the ring-shaped head 42, and the upper horizontal pin 7 is inserted. The upper eye fitting 2 which penetrates the groove side plate 44 of the support fitting 21 and is supported by the upper lateral pin 7 between the ring-shaped head 42 of the upper eye fitting 2 and the groove side plate 44 of the support fitting 21. Forms a gap that can be appropriately tilted and swung, the support metal fitting 21 is fixed to the lower part of the upper support member 8, and the ring-shaped head portion 46 of the lower eye metal fitting 5 is connected to the support metal fitting 12 of the upward opening groove shape. The ring-shaped head 4 is arranged in the groove 47.
6 has a circular hole 49, and the lower lateral pin 10 has a diameter smaller than the hole diameter.
Through the lower lateral pin 10 into the groove side plate 48 of the support fitting 12 and between the ring-shaped head 46 of the lower eye fitting 5 and the groove side plate 48 of the support fitting 12. A running rail suspension support device in which a lower eye fitting (5) supported by a horizontal pin (10) forms a gap that can be appropriately tilted and swung, and a running rail (13) is hung and supported via the support fitting (12).