JP2006044373A - Floor type carrying conveyor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a floor type carrying conveyor allowing easy mounting of a guide rail, attaining of simple installation layout and smooth carrying guide on a carrying line floor, and considerable reduction of mounting man-hour and adjusting man-hour. <P>SOLUTION: This conveyor 10 is provided with a guide rail 11 of one line having a rail vertical surface 11a for holding and a rail horizontal surface 11b for mounting along the carrying line, a carrier main body 13 rolling on the supporting rail 12 jointly provided right above the guide rail 11, a pair of lower part guide rollers 13c journaled to the carrier main body 13 to hold the rail vertical surface 11a for holding of the guide rail 11, a driven bar 15 for carrying for mutually connecting intermediate parts with each other of the carrier main body 13, a carrying body supporting bracket 16 erected at an top end part of the carrier main body 13, and a friction driving means 17 for sliding both side surfaces of the driven bar 15. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention is a floor-type transport conveyor that transports a transporter carrying a transported object on the floor surface, and in particular, transports a transported object such as parts of an automobile on an automobile production line, welding process, assembly The present invention relates to a floor-type transfer conveyor for transferring to various processes such as processes.

  In general, as a so-called floor transport system in which a transport body carrying a transported object such as an automobile part is transported on a floor surface, the transport body is transported by circulatingly driving a transport chain in which a large number of transport carriers are connected. There are floor-type conveyors such as this, and floor self-propelled conveyor vehicles that run on the work floor by means of power supply drive means, and in recent years, many objects to be conveyed such as automobile parts can be continuously conveyed. Floor type conveyors are frequently used.

Therefore, as a conventional floor-type transport conveyor 50, a guide rail 51 having a circular cross-sectional shape laid along the transport line as shown in FIGS. The support rail 52, a plurality of inverted J-shaped carriers 53 having a free roller 53a that rolls on the support rail 52 in the longitudinal direction of the rail are pivotally attached to the upper end, and both side surfaces of the guide rail 51 are sandwiched between A pair of lower guide rollers 53c, 53c pivotally attached to the lower end of the inverted J-shaped carrier 53 and the base of the inverted J-shaped carrier 53 are connected to each other and arranged between the guide rail 51 and the support rail 52. The transport driven bar 55 and the transport body support bracket 56 that supports the transport body W in the floor space of the transport line and is erected on the transport driven bar 55. , There is provided with the friction drive means being spaced along said conveyor line with sliding sides in the conveying direction and sandwiched the conveyance driven bar 55 (see Patent Document 1).
Japanese Patent Laying-Open No. 2001-88693 (first page, FIG. 4)

However, the conventional floor conveyor 50 as described above has the following problems.
That is, the pair of lower guide rollers 53c and 53c pivotally attached to the lower end portion of the inverted J-shaped carrier 53 are configured to travel while sandwiching both side surfaces of the guide rail 51 having a circular cross-sectional shape. The support bracket 56 that supports and fixes the guide rail 51 on the conveyance line floor must be disposed at a specific position that does not hinder the traveling of the lower guide roller 53c, and there is a significant limitation in its installation form. In addition, peripheral devices such as a detection sensor (not shown) necessary for detecting and controlling the movement of the inverted J-shaped carrier 53 must also be installed on a support member provided separately on the transport line floor. Therefore, there is a problem that the installation layout on the transfer line floor becomes complicated and the workability such as maintenance is significantly deteriorated.

  Further, since the guide rail 51 has a circular cross-sectional shape and is in line contact with the lower guide roller 53 on the side of the inverted J-shaped carrier 53 along the rail longitudinal direction, the conveyance is caused by the deviation of the opposing positions of the two. In order to prevent resistance, the contact state between the lower guide rollers 53c, 53c on the inverted J-shaped carrier 53 side and the guide rail 51, that is, the so-called contact dimension, must be confirmed at the construction site, and this is unnecessary. There was a troublesome problem that the number of mounting steps and adjustment steps were required.

  Therefore, the object of the present invention is to solve the problems of the prior art as described above, to easily install the guide rail, to achieve a simple installation layout and a smooth conveyance guide on the conveyance line floor, It is to provide a floor type conveyor that can greatly reduce the adjustment man-hours.

  The floor-type transport conveyor of the present invention comprises a single guide rail having a clamping rail vertical plane and a mounting rail horizontal plane laid along a transport line, a support rail provided directly above the guide rail, A pair of carrier main bodies each having a free roller that rolls on the support rail in the longitudinal direction of the rail and is pivotally attached to the upper end, and a pair of holders that are pivotally attached to the lower end of the carrier main body and sandwich the vertical rail clamping surface of the guide rail. A lower guide roller, a transport driven bar arranged between the guide rail and the support rail and interconnecting the intermediate portions of the carrier body, and a transport line erected at the uppermost end of the carrier body. A carrier support bracket that supports the bottom of the carrier in the space above the floor, and both sides of the driven follower bar that are spaced apart along the transfer line are slid in the transfer direction. By and a friction drive means for, it is obtained by solving the above problems.

Since the floor type conveyor according to the present invention thus obtained has a unique conveyor structure, the following effects can be obtained.
That is, by adopting a single guide rail having a holding rail vertical surface and a mounting rail horizontal surface laid along the transfer line, the lower guide roller of the carrier body holds the holding rail vertical surface of the guide rail. In addition, since the entire roller outer peripheral surface is in contact, it can run smoothly and does not require strict contact dimensions as in the past, and it is easy to install the guide rail, greatly reducing the number of installation steps and adjustment steps. In addition, peripheral devices such as detection sensors required to control the operation by detecting the movement of the carrier body can be mounted on the rail horizontal surface for mounting the guide rail, so the installation layout on the conveyor line floor is simplified. Therefore, workability such as maintenance can be remarkably improved.

  And by adopting the support rail, the free roller of the carrier body abuts against the arcuate curved surface of the support rail and rolls smoothly, so the conveyance noise can be greatly reduced and the weight is reduced as a hollow rail Not only can the strength be increased, but an optimal floor layout along the transfer line can be easily achieved by bending.

  A guide rail and a pair of lower guide rollers are arranged at the lower end of the carrier body, that is, below the sandwiching position of the transport driven bar, thereby transporting a high center-of-gravity transport object or heavy transport object on the floor. Even if a rotational moment acts in the left or right direction around the sandwiching position of the conveyance follower bar, the guide rail and the pair of lower guide rollers ensure that the carrier body is held in an upright posture, and the conveyance body Can be prevented. In particular, even when a curved corner where centrifugal force is applied is transported, stable on-floor transport can be realized without rolling.

  In addition, by adopting a transported object support structure in which the carrier body is attached to both ends of the transport follower bar, both ends supported smoothly to form a chord with respect to the arc locus at the curved corner of the transport line. Since the direction of conveyance is changed while following, the length of the follower bar for conveyance attached to the carrier body, as well as stable conveyance on the floor without shaking at the curved corner, even for heavy conveyance objects, In other words, since the mounting interval of the carrier body can be changed as appropriate, it is possible to cope with any shape of the transported object, which is long and short, and the transported objects can be smoothly transported without interfering with each other. Can do.

  The floor-type transport conveyor of the present invention comprises a single guide rail having a clamping rail vertical plane and a mounting rail horizontal plane laid along a transport line, a support rail provided directly above the guide rail, A pair of carrier main bodies each having a free roller that rolls on the support rail in the longitudinal direction of the rail and is pivotally attached to the upper end, and a pair of holders that are pivotally attached to the lower end of the carrier main body and sandwich the vertical rail clamping surface of the guide rail. A guide roller, a transport driven bar that is arranged between the guide rail and the support rail and connects the intermediate portions of the carrier body to each other, and an upper end of the carrier body that stands upright on the transport line. A carrier support bracket that supports the bottom of the carrier in the space above the floor, and is slidably disposed along the conveyance line and sandwiches both side surfaces of the conveyance follower bar and slides in the conveyance direction. If it is easy to install guide rails and achieve a simple installation layout on the transfer line floor and smooth transfer guides, the installation man-hours and adjustment man-hours can be greatly reduced. What is the specific construction form, the specific transport body supported by the transport body support bracket, the specific rail material of the support rail, the specific sandwiching form between the transport driven bar and the friction drive means, etc. It doesn't matter.

  That is, the guide rail most characteristic of the floor-type transport conveyor of the present invention is that if the guide rail has a vertical surface for clamping and a horizontal surface for mounting, the guide rail can be easily mounted and simply installed on the transport line floor. Any cross-sectional shape such as an inverted T-shaped cross-sectional shape, L-shaped cross-sectional shape, or I-shaped cross-sectional shape can be achieved because layout and smooth conveyance guides can be achieved and installation and adjustment man-hours can be greatly reduced. May be provided.

  In addition, about the construction form of the floor type conveyor according to the present invention, in consideration of maintenance and maintenance of the conveyor, it is common to construct with the whole conveyor exposed on the floor surface, but the conveyance along the conveyance line In consideration of the working environment of the working area, it is possible to adopt a double floor structure and perform construction in a form in which only the upper part of the carrier support bracket is exposed from the upper floor surface.

  Further, in the present invention, the transport body supported by the transport body support bracket may have any mounting form as long as it can transport the transported object, depending on the shape, structure, etc. of the transported object. A carrying form such as a carrying stand, a carrying plate, a carrying frame, a carrying basket, and a carrying tray can be appropriately employed.

  Further, the support rail employed in the present invention has any rail form such as a solid circular cross section, a hollow circular cross section, a solid square cross section, a hollow square cross section, etc. Even if it is provided, such a rail configuration can achieve an optimal layout along the transport line.

  Further, in the present invention, the specific sandwiching form between the transport driven bar and the friction drive means is an uneven state as long as the transport driven bar can be reliably slid in the transport direction. However, in consideration of the connection form with the adjacent transport follower bar, power transmission efficiency, etc., the transport follower bar More preferably, the side surfaces and the sliding surface of the friction drive means are formed as flat surfaces.

  Further, the arrangement layout of the friction drive means employed in the present invention does not need to be arranged in a one-to-one correspondence with each of the follower bars for conveyance in order to simplify the apparatus configuration. It is preferable to arrange them at positions where large conveyance power is particularly required such as areas, curved corners, and carry-out areas.

  A floor-type transport conveyor according to an embodiment of the present invention is for transporting a transported object such as an automobile part to an assembly process to be transported on the floor in an automobile manufacturing line serving as a transport line. Based on

  First, FIG. 1 is an overall schematic diagram showing the floor type conveyor of this embodiment, FIG. 2 is an operation mechanism diagram of the floor type conveyor of this embodiment, and FIG. 3 is adopted in this embodiment. 4 is a perspective view of the guide rail, and FIG. 4 is a view showing a transport state seen from the XX direction of FIG.

Therefore, the floor-type transport conveyor 10 of the present embodiment, as shown in FIGS. 1 and 2, is solid directly above a single guide rail 11 having an inverted T-shaped cross section laid along the transport line. The support rails 12 are arranged side by side in parallel to form the track portion of the conveyor.
That is, by adopting the inverted T-shaped guide rail 11 having the sandwiching rail vertical surface 11 a, the lower guide rollers 13 c and 13 c of the carrier body 13 described later can sandwich the guide rail 11. Is in contact with the entire outer peripheral surface of the roller while sandwiching from both sides.

A large number of carrier bodies 13 are suspended from the support rail 12, and a pair of front and rear free rollers 13a, 13a rotatably mounted on the upper end portion of the carrier body 13 and side end portions thereof. A total of four upper guide rollers 13b, 13b, 13b, 13b, which are pivotally attached to the front, rear, left and right, smoothly roll while supporting the upper surface of the support rail 12 in line with the rail in the longitudinal direction of the rail. A contact noise suppression function that suppresses contact noise that tends to occur in a sliding portion with the rail 12 is exhibited.
As shown in FIG. 3, the lower surface portion of the support rail 12 is supported by a large number of fixed legs 14 fixed at predetermined intervals along the floor surface of the transfer line. A large number of carrier bodies 13 are composed of a curved C-shaped plate that bulges to the side of the conveying line so that the support rail 12 can move in the longitudinal direction of the rail. The rail unit is configured by being integrally assembled to the mounting rail horizontal surface 11b of the guide rail 11 having a cross-sectional shape by welding or the like.

  In addition, a pair of lower guide rollers 13c and 13c that roll while holding the holding rail vertical surface 11a of the guide rail 11 on both sides are rotatably attached to the lower end portion of the carrier body 13. Even when a rotational moment acts on the left or right direction around the sandwiching position of the transport driven bar 15 when transporting a transport object having a high center of gravity or a heavy transport object, the tubular guide rail 12 and a pair of lower guides The rollers 13c and 13c exhibit a roll preventing function for securing the upright posture of the carrier body 13 and preventing the roll of the carrier W in the left-right direction.

Further, a transport driven bar 15 arranged between the guide rail 11 and the support rail 12 of the carrier main body 13 and connecting the intermediate portions of the carrier main body 13 to each other is horizontally mounted, so that the transport driven follower is provided. An arc line following function that changes the conveying direction while smoothly following the arc locus at the curved corner of the conveying line while supporting the both ends forming a chord, even though the bar 15 is formed of a linear member. Has come to demonstrate.
The transport driven bar 15 is flexibly connected to the transport driven bar 15 adjacent to the transport shaft 15 d centered on a connection shaft 13 d that is present in the intermediate portion of the carrier body 13, and supports the guide rail 11. It is arranged in parallel with the rail 12.

Next, a carrier support bracket 16 that supports the bottom of the carrier in the space above the floor of the carrier line is erected at the uppermost end of the carrier body 13.
Note that the floor-type transport conveyor 10 of the present embodiment is generally constructed in a form in which the entire conveyor is exposed on the floor surface in consideration of maintenance and maintenance of the conveyor, but the transport work area along the transport line In consideration of the above working environment, it is possible to adopt a double floor structure and perform construction in such a manner that only the upper part of the carrier support bracket 16 is exposed from the upper floor surface.

As shown in FIG. 2, the friction drive means 17 for sliding the transport driven bar 15 is disposed at a predetermined interval along the transport line. A friction drive function is generated in which a frictional force is generated by sliding in the conveyance direction with both side surfaces of 15 being sandwiched.
In addition, in order to form a good connection form between the both side surfaces of the conveying driven bar 15 and the friction driving means 17 with the adjacent conveying driven bar 15 and to exhibit sufficient power transmission efficiency, Both adopt a flat surface.

  Further, the friction drive means 17 abuts against the friction roller 17a for transporting by sliding one side surface of the transport driven bar 15 in the transport direction and the other side surface of the transport driven bar 15 for guiding the transport. Since the friction roller 17a and the passive roller 17b slide while sandwiching the conveyance follower bar 15 with the passive roller 17b, the conveyance force loss prevention function that smoothly transmits without losing the conveyance force by the friction roller is provided. Demonstrate that it can be transported reliably.

  Since it is as mentioned above, the floor type conveyor 10 which is a present Example employ | adopted the straight guide rail 11 which has the rail vertical surface 11a for clamping laid along the automobile manufacturing line, and the horizontal surface 11b for attachment. As a result, the lower guide roller 13c of the carrier body 13 contacts the entire roller outer peripheral surface while sandwiching the sandwiching rail vertical surface 11a of the guide rail 11, so that it can run smoothly and has a strict engagement dimension as in the prior art. The guide rail 11 can be easily mounted and the mounting man-hours and adjustment man-hours can be greatly reduced. In addition, the carrier detection sensor 18 for detecting the movement of the carrier body 13 and controlling the operation, etc. The peripheral device is a rail horizontal surface for mounting the guide rail 11 via the peripheral device support bracket 19. Since it can be attached to 1b, the installation layout on the floor of the automobile production line is simplified and the guide rail 11 for improving the maintenance workability is easy to install. Guidance can be achieved, and the effects can be enormous, such as greatly reducing the number of installation steps and adjustment steps.

  The above-described floor type conveyor 10 employs the guide rail 11 in which the holding rail vertical surface 11a and the mounting rail horizontal surface 11b are formed so as to have an inverted T-shaped cross section. As shown, a guide rail 21 having a sandwiching rail vertical surface 21a and a mounting rail horizontal surface 21b formed so as to have an L-shaped cross section may be employed. The installation of the guide rail 21, which improves the workability of maintenance and maintenance, is simple, can achieve a simple installation layout on the transfer line floor and smooth transfer guidance, and greatly increases the installation man-hours and adjustment man-hours. The effect is enormous, such as reduction.

BRIEF DESCRIPTION OF THE DRAWINGS The whole schematic diagram of the floor type conveyance conveyor which is one Example of this invention. The operation | movement mechanism figure in the floor type conveyance conveyor of a present Example. The perspective view of the guide rail employ | adopted in the present Example. The figure which shows the conveyance state seen from the XX direction of FIG. The figure which shows the conveyance state of the floor-type conveyance conveyor which is another Example of this invention. The whole schematic diagram which shows the conventional floor type conveyance conveyor. The figure which shows the conveyance state seen from the YY direction of FIG.

Explanation of symbols

10, 20, 50 ... floor type conveyor 11, 21, 51 ... guide rails 11a, 21a ... clamping rail vertical planes 11b, 21b ... mounting rail horizontal planes 12, 22, 52 ... · Support rails 13 and 23 · · · Carrier body 53 · · · Reverse J-shaped carrier 13a and 53a · · · Free roller 13b · · · Upper guide roller 13c and 53c · · · Lower guide roller 13d · · · Connection shafts 14, 24, 54 ... fixed legs 15, 25, 55 ... transport driven bars 16, 26, 56 ... transport body support brackets 17, 27, 57 ... friction drive means 17a, 57a ... Friction rollers 17b, 57b ... Passive rollers 18 ... Carrier detection sensor 19 ... Peripheral device support bra Tsu door W ··· carrier

Claims (1)

  A straight guide rail having a holding rail vertical plane and a mounting rail horizontal plane laid along the conveyance line, a support rail provided directly above the guide rail, and the support rail on the rail longitudinal direction. A large number of carrier bodies having a movable free roller pivotally attached to the upper end portion, a pair of lower guide rollers pivotally attached to the lower end portion of the carrier body and sandwiching the holding rail vertical surface of the guide rail, and the guide rail A carrier driven bar arranged between the carrier body and the intermediate part of the carrier body, and a carrier driven bar which is erected at the uppermost end of the carrier body and holds the bottom of the carrier body in the space above the floor of the carrier line. A support supporting bracket for supporting, and friction drive means that are spaced apart along the transport line and sandwich both side surfaces of the transport driven bar to slide in the transport direction. Floor type conveyor, characterized by that.

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