JPH0443415Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a trolley conveyor in which hangers can be advanced and stopped.

BACKGROUND ART Conventional conveyor hanger advance stopping devices with movable upper pushers are disclosed in Japanese Patent Publication No. 54-30833, Japanese Patent Publication No. 55-14769,
There is Japanese Utility Model Publication No. 57-2329, and examples of fixed upper pushers are Publication No. 39-5680,
Special Publication No. 46-24853, Publication No. 54-5598,
It is described in Japanese Patent Publication No. 54-8951, Japanese Utility Model Publication No. 54-24465, etc.

Problems to be Solved by the Invention Regarding the above-mentioned conventional conveyor hanger advancement stop device, if the upper pusher is movable, the pusher holder and anti-back may be fixed types, and there is no particular problem on the hanger side. If the upper pusher is fixed, the pusher holder and anti-back on the hanger side must be movable, and the pusher holder and anti-back are separate parts in terms of the structure for detaching from and locking the pusher, and each must be independent. It was said that it could be rotated. As a result, the number of parts increases, and manufacturing costs and assembly costs are also high, and a hanger advancement stop device that integrates a pusher holder and an anti-back is desired.

Means for Solving the Problems The present invention integrates a pusher holder and an anti-back, and devises a movable structure.
That is, a free rail is provided directly below and parallel to the power rail on which the power chain runs, and a hanger that can run freely in the free rail engages and disengages with a pusher that is suspended and fixed to the power chain via a dog. The dog is long in the front and back and has an arcuate shape with a high top surface, and is rotatable in a vertical plane via a horizontal dog pin, and the engagement end of the pusher is at the highest position of the top surface. In a trolley conveyor having a recessed receiving groove into which the dog is inserted, the highest position of the mountain height on the upper surface of the dog is provided toward the rear in the power chain running direction, and the dog pin is provided toward the front of the dog, and the highest position of the mountain height on the upper surface of the dog is provided toward the front of the dog. A weight portion is integrally formed in the front end portion located at the front end portion, and the dog is normally rotated by the biasing force of the weight portion to a position where the receiving groove projects upwardly from the hanger to engage the pusher. The end of the dog is held in a position where it can engage with the receiving groove, and the front end of the dog is assembled so as to always protrude forward of the hanger. At the rear end of the stopper that is separate from the hanger or the preceding hanger, a stopping claw extends rearward at a position approximately at the same height as the dog. , a vertical mounting side located at the front, and a lower side that slopes diagonally rearward and downward from the lower end of the mounting side, and is formed in an open U-shape opening toward the rear, and the stopper claw teeth,
When in contact with the front end of the dog, the rear end edge of the upper side comes into contact with the upper surface of the dog behind the dog pin, and the inner surface of the lower side is shaped so as to come into contact with the lower surface of the front end of the dog. The above-mentioned problems can be solved by this configuration.

Operation With the above-described configuration, the engaging end of the pusher and the receiving groove of the dog are always engaged,
When the hanger is advanced as the pusher advances and the hanger is to be stopped, the upper surface of the dog rearward of the dog pin contacts the rear end edge of the upper side of the stopping claw, which is stopped, and the hanger continues to advance. At the same time, the rear edge slides on the upper surface of the dog, and at the same time, the dog is rotated around the dog pin, and the receiving groove of the dog is rotated in a direction away from the engaging end of the advancing pusher, and then the dog is rotated. The lower surface of the front end of the stopper comes into contact with the inner surface of the inclined lower side of the stopper claw, and as the hanger advances, the front end slides on the inner surface of the lower side and is gradually lifted, causing the dog to further rotate, and finally the pusher is completely separated from the dog, and the hanger is stopped at a position where the front end of the dog comes into contact with the attachment side of the stop claw. At this stop position, the highest position of the dog is completely separated downward from the engaging end of the pusher, and while the hanger is stopped, the front end of the dog is moved into an open U-shape formed by the upper side of the stopping claw, the mounting side, and the lower side. Unlike conventional products, the pusher and dog do not come into contact with each other without the use of auxiliary members such as springs, and even when the pusher passes over a stopped hanger one after another. There is no noise caused by contact, no wear and tear, and the installation location remains quiet. Furthermore, when the contact between the stopping pawl and the dog is released due to re-advancement of the preceding hanger, etc., the dog is rotated and held at the normal position again by the biasing force of the weight portion and continues to advance. The hanger is engaged by the coming Pushsha, and the hanger begins to move forward again.

Embodiments The configuration of the present invention will be explained by referring to embodiments shown in the drawings.

As shown in FIGS. 1 to 3, a free rail 3 is provided directly below the power rail 2 on which the power chain 1 runs in the direction of arrow A, in parallel with the power rail 2, and is able to run freely within the free rail 3. This is a trolley conveyor in which a hanger 4 can be engaged with and disengaged from a pusher 6 suspended from the power chain 1 via a dog 5.

The pusher 6 is suspended and fixed to the power chain 1, and the dog 5 is fixed as shown in FIGS. 1 and 4.
As shown in Figures to Figures 7, it is long in the front and back (with the forward direction of arrow A being the front), has an arcuate shape with the rear end of the upper surface 9 being high, and is connected via the horizontal dog pin 7 provided at the front end. The hanger 4 is rotatably supported on the plate 8 of the hanger 4 in a vertical plane, and at the highest position of the upper surface 9, there is a pusher holder 10 on the front side and an anti-back holder 11 lower than the pusher holder 10 on the rear side.
is a receiving groove 18 into which the lower end of the pusher 6 is inserted.
They are integrally formed to protrude from each other.
Therefore, the upper surface 9 has a mountain-shaped shape that slopes downward toward the front of the pusher receiver 10 and toward the rear of the anti-back 11, and as shown in FIGS. 1, 3, and 4, Since the pusher receiver 10 has a heavy front end 12 with a weight portion 20, it is normally held in a position where it projects upwardly from the plate 8 of the hanger 4 and can engage with the pusher 6, and the front end 12 of the dog 5 is As shown in FIGS. 1 to 3, a front end portion 12 is formed on the front side of the dog pin 7, and a weight portion 20,
20 are integrally formed, and the front end portion 12 is
As shown in Figures 1, 2, and 4 to 7,
Separate stopping claw 1 located in front of the hanger 4
The plate 8 of the hanger 4 is held so that it can come into contact with the plate 8 of the hanger 4. Therefore, normally, the pusher receiver 10 of the dog 5 is engaged with the pusher 6 moving in the direction of arrow A due to the urging force of the weights 20, 20, and as the pusher 6 moves forward, the hanger 4 also moves in the direction of arrow A. Proceed in the direction. The hanger 4
stops by coming into contact with a stopper (not shown) protrudingly provided on the traveling path or a stopped preceding hanger 4a.

The hanger 4 is stopped as follows.

As shown in FIGS. 1 and 4, the preceding hanger 4a is stopped, and the hanger 4 advances in the direction of arrow A and approaches the hanger 4a. A stopping pawl 13 is provided at the rear end of the hanger 4a at a position approximately at the same height as the dog 5 and projects rearward. When viewed from the side, the stopping claw 13 has a long horizontal upper side 14, a vertical mounting side 15, and a lower side 16 inclined diagonally downward, as shown in FIGS. 1 and 4 to 7.
are connected to form an open U-shape, and the upper side 1
4, as shown in FIG.
3, the rear edge 17 of the upper side 14
The dog pin 7 is attached to the upper surface 9 of the dog 5.
After abutment as shown in FIG. 5 at the rear and in front of the pusher receiver 10, the dog 5 is moved clockwise (arrow B) as the hanger 4 advances.
direction), while being able to slide on the upper surface 9, and subsequently, as shown in FIG. As the hanger 4 advances, the front end 12 slides on the inclined inner surface 19 and cooperates with the upper side 14 to move the dog 5.
Rotate it further to the position shown in FIG.

The aforementioned rotation of the dog 5 reliably separates the dog 5 from the pusher 6.

The hanger 4 moving in the direction of arrow A and the stopped preceding hanger 4a come close to each other as shown in FIG. 4. The position of the dog 5 at this time is assumed to be 5a. After approaching, first, as shown in FIG. 5, the rear end edge 17 of the upper side 14 of the stopping claw 13 comes into contact with the upper surface 9 of the dog 5, which is inclined to a middle height, and as the hanger 4 advances,
The rear edge 17 slides on the upper surface 9 while rotating the dog 5 clockwise (in the direction of arrow B) around the dog pin 7, as shown at 5b.
Therefore, the pusher 6 and the pusher receiver 10 gradually separate from each other.

As the hanger 4 advances further, the lower surface of the front end 12 of the dog 5 is brought into contact with the stopper claw 13, as shown in FIG.
and as the hanger 4 advances, the front end slides on the inclined inner surface 19, and at the same time the dog 5 is further rotated in the direction of arrow B, reaching the position 5c, The pusher 6 and the pusher receiver 10 are substantially separated from each other.

When the dog 5 rotates to the position shown in FIG. 7, that is, the position 5d, the pusher 6 and the pusher receiver 10
The hanger 4, which is completely separated from the pusher 6 and which continues to advance, stops at that position. In this position, the pusher holder 10 and the anti-back 11 of the dog 5 are completely separated from the pusher 6, so they do not come into sliding contact with the pusher 6, and even when many subsequent pushers 6 are moving, the pusher 6 and the anti-back 11 are completely separated from the pusher 6. No abrasion or noise generation occurs at all.

By attaching the aforementioned stopping pawl 13 to the stopper at the same height, the hanger 4 can be stopped by the stopper in exactly the same manner as described above.

While the hanger 4 is stopped, the front end 12 of the dog 5 is held in an open U-shape formed by the upper side 14, the mounting side 15 and the lower side 16 of the stopping claw 13, and does not come off.

When the preceding hanger 4a advances or the stopper is removed, the dog 5 of the hanger 4 moves forward to the front end 12.
Due to the biasing force of the weights 20, 20, it tries to rotate back from the position 5d shown in FIG. 7 to the position 5a shown in FIGS. 1 and 4 in the direction opposite to the arrow B,
The advancing pusher 6 slides on the mountain-shaped rear slope of the dog 5, crosses the anti-back 11, and enters the receiving groove 18.
The hanger 4 moves in the direction of the arrow A together with the pusher 6, and the pusher 6 is securely engaged with the dog 5 which is biased by the weight 20. resume.

Effects of the invention In this invention, the pusher holder, anti-back, and weight part are integrally formed on the dog, so the number of parts is reduced, the manufacturing cost is lower, and the number of assembly steps is correspondingly reduced, the assembly cost is also lower, and the maintenance cost is reduced. Also, while the hanger is stopped due to rotation of the dog, the dog can reliably disengage from the pusher due to the cooperation of the upper and lower sides of the stopping claw. , the hanger can be stopped reliably, and the front end of the dog is securely held within the open U-shape formed by the upper side, mounting side, and lower side of the stopping claw, so that the hanger cannot swing in the vertical direction, etc. However, the front end of the dog will not come off from the open U-shaped inside of the stopper claw.
Since the pusher holder and anti-back of the dog are located completely below and away from the lower end of the pusher, there is no contact between the dog and the pusher, and many pushers can pass over the stopped hanger one after another. Even when the dog and pusher are in contact with each other, there is no sliding wear between the dog and the pusher, no noise is generated, and it is useful for improving the environment. Due to the biasing force, it is rotated back to the original position where it engages with the pusher,
The engagement between the pusher and the dog is ensured, and the upper side of the stopping claw is shaped like a long horizontal fan, so even if the rails of the trolley conveyor are curved, the engagement between the stopping claw and the dog is easy. The engagement is secure, and even when the rail is on a downward slope, the front end of the dog is securely held within the open U-shape of the stopper claw, so the hanger can be stopped reliably. This has the effect of ensuring that there is no danger of self-propulsion in vain.

[Brief explanation of the drawing]

Figure 1 is a side view of the embodiment when the hanger is locked, showing the position of the dog with dotted lines while the hanger is moving, and Figure 2 is the same plane when the hanger is stopped, with the power rail removed and the free rail cut in its upper half. Figure 3 shows only both rails in cross section and is an elevational view in the same direction of movement showing the position of the dog in progress. It is a partial side view which shows a related position. 1...Power chain, 2...Power rail, 3...
Free rail, 4, 4a...hanger, 5, 5a,
5b, 5c, 5d...Dotsugu, 6...Pushya,
7... Dog pin, 9... Upper surface, 10... Pusher holder, 11... Anti-back, 12... Front end,
13... Stopping claw, 14... Top side, 15... Mounting side, 16... Bottom side, 17... Rear edge, 18... Reception groove, 19... Inner surface, 20... Weight, 21... Engagement end.

Claims (1)

[Scope of utility model registration request] A free rail is provided directly below the power rail on which the power chain runs in parallel with the power rail, and a hanger that can run freely in the free rail can engage and disengage from a pusher that is suspended and fixed to the power chain via a dog. The dog is long in the front and back and has an arcuate shape with a high top surface, and is rotatable in a vertical plane via a horizontal dog pin, and the engaging end of the pusher is fitted into the highest position of the top surface. In the trolley conveyor in which a receiving groove is recessed, the highest position of the mountain height on the upper surface of the dog is provided toward the rear in the running direction of the power chain, and the dog pin is provided toward the front of the dog, and the dog pin is located forward of the dog pin. A weight part is integrally formed on the front end of the pusher, and the dog is normally rotated by the urging force of the weight part to a position where the receiving groove projects upwardly from the hanger, and the dog engages with the engagement end of the pusher. The dog is held in a position where it can engage with the receiving groove, and the front end of the dog is assembled so as to always protrude forward of the hanger, and the dog is attached to the hanger located forward of the hanger in the running direction of the power chain. At the rear end of the separate stopper or the preceding hanger, a stopping claw extends rearward at approximately the same height as the dog, and the stopping claw has a long horizontal fan-shaped upper side; It is formed in an open U-shape that opens toward the rear, and consists of a vertical mounting side located at the front and a lower side that slopes diagonally rearward and downward from the lower end of the mounting side, and the stopping claw is When in contact with the front end of the dog, the rear end edge of the upper side comes into contact with the upper surface of the dog behind the dog pin, and the inner surface of the lower side is shaped so as to come into contact with the lower surface of the front end of the dog. A trolley conveyor characterized by: