JPH0321322Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a conveying device using a moving body, which is employed, for example, in an automobile assembly factory to convey a body along a fixed path.

Conventional technology Conventionally, this type of device has been used, for example, in Japanese Patent Application Laid-Open No.
As seen in Publication No. 209457, a mobile body that can travel freely on a fixed route is constructed by connecting a plurality of trolleys supported and guided by rails, and a traveling drive device is arranged along the fixed route. At the same time, a structure is provided in which a conveyed object support device is attached from the movable body side via a plurality of vertical pivot pins. In this conventional type, since the movable body and the support device are integrally connected by a vertical pivot pin, the joints are twisted in the vertical and horizontal curve paths, making it impossible to smoothly travel around curves. Therefore, recently, a method has been considered in which the moving body and the support device are connected via a trunnion.

Problems to be Solved by the Invention In the conventional system as described above, for example, when a moving object is moved inside a painting chamber, the object to be transported is painted, and then the moving object is moved inside a drying chamber to dry the paint. The paint that adheres to the trunnion in the painting room hardens in the drying room, and the trunnion bushings are baked by the heat in the drying room, which often prevents the trunnion from functioning as expected. Furthermore, repair after burn-in is not easy.

Means for Solving the Problems In order to solve the above problems, the conveyance device using a moving body in the present invention is a moving body that connects a plurality of trolleys supported and guided by rails and can freely run on a fixed path. , a traveling drive device is arranged along the fixed path, a plurality of connection pins are provided upright from the moving body side, and a conveyed object support device is provided between these connection pins via a trunnion. , a lateral trunnion pin orthogonal to the fixed path in which the trunnion is attached to the upper end of the connection pin;
It consists of a bearing externally fitted onto the trunnion pin, a case body with only the lower surface open that is integrated with the bracket from the conveyed object support device side, and a fixture for removably attaching the bearing inside the case body. ing.

Effects According to the configuration of the present invention, since the trunnion pin and the bearing are located inside the case body, it is possible to prevent the adhesion of paint and the like and the influence of heat, and the connecting pin and the bracket can be separated by removing the fixture. obtain.

Embodiment An embodiment of the present invention will be described below based on the drawings.

1 is a moving body supported and guided by a pair of left and right rails 2, including a front trolley 3 and a second trolley 4.
, a third trolley 5, a connecting rod 6 that connects the front trolley 3 and the second trolley 4 so as to be relatively swingable, and a conveyed object support device 7 that also serves as a connecting rod between the second trolley 4 and the third trolley 5. Consisted of. Each of the trolleys 3 to 5 has trolley wheels 9 on both sides of the main body 8, at a portion of the front and back, respectively, and these trolley wheels 9 are supported and guided by the rails 2. The main body 8 also has guide rollers 10 guided at the upper and lower inner ends of the rail 2. The support device 7, which also serves as a connecting rod, is composed of a frame 12 having attachments 11 at a plurality of locations on the upper surface side, and brackets 13 hanging from the front and rear of this frame 12, and is connected to the second trolley 4. A connecting pin 14 erected from the third trolley 5 is connected to the bracket 13 via a trunnion 15. Reference numeral 16 denotes the body of an automobile, which is an example of an object to be transported, and a receiver 17 corresponding to the type of the body 16 is attached to the mounting tool 1.
It can be detachably attached to 1. A passive body 19 is attached to the lower part of the main body 8 of the front trolley 3 via a horizontal pin 18 and is vertically swingable. This passive body 19 is supported at its intermediate portion by the horizontal pin 18, and is biased to swing by a weight so that the lower side becomes lower due to the displacement of the center of gravity.
A passive surface 20 that is open downward and has an upright shape is formed on the lower side, and a cam surface 21 for swinging against weight bias is formed on the upper side of the upper side. A cam body 22 that acts on the cam surface 21 is connected to the rear of the lower part of the main body 8 of the third trolley 5 . A pair of left and right guide rails 23 are disposed below the rail 2 along the rail 2, and the rails 2 and 23 are integrated by yokes 24 spaced at predetermined pitches. Traveling drive device 2 supported and guided by the guide rail 23
5 is a roller chain type, and link chain 2
6, a pair of left and right brackets 27 which are connected in a vertical manner from a proper position of the link chain 26, a roller 28 which is attached to the lower end of these brackets 27 and supported and guided by the guide rail 23, and a proper position of the link chain 26. The driving projection 29 is integrally connected with the driving projection 29 in an upright manner, and by engaging the driven surface 20 with the driving projection 29, the movable body 1 can freely run on a fixed path 30.

The trunnion 15 includes a lateral trunnion pin 31 which is attached to the upper end of the connecting pin 14 in a perpendicular direction and perpendicular to the constant path 30, and a pair of bearings 3 which are fitted onto both ends of the trunnion pin 31, respectively.
2, a case body 33 with only the lower surface open 33A integrated with the bracket 13, and this case body 3
3, and a fixture 34 for removably mounting the bearing 32 therein. The bearing 32 includes an inner ring 32A that fits on the trunnion pin 31, and an outer ring 32B that fits on the inner ring 32A.
There is a spherical contact portion 32C between both rings 32A and 32B. The case body 33 includes a top plate portion 33B that is integrated with the bracket 13, and a side plate portion 3 that is connected and suspended from the outer edge of the top plate portion 33B.
3C, and has a rectangular shape in plan view in the embodiment, but may have a circular shape or the like. The fixture 3
4 is a U bolt 34A that can be fitted externally to the bearing 32;
It consists of a nut 34B that is screwed into the threaded part,
A through hole 35 into which a threaded portion can be inserted is formed in the top plate portion 33B.

Next, the operation of the above embodiment will be explained.

The movable body 1 is driven by the traveling drive device 2 by the drive protrusion 29 engaging with the passive surface 20 of the passive body 19.
The vehicle receives the driving force of 5 and travels on a fixed route. When the preceding moving body 1 is stopped in front, the passive body 19 in the following moving body 1 on the traveling side
The cam surface 21 of the preceding moving body 1 rides on the cam body 22 of the preceding moving body 1, and the passive body 19 swings around the horizontal pin 18 so that the front part is at the lower side, and the passive surface 20 is driven. It will come off the protrusion 29. After that, the front trolley 3 of the following moving body 1 collides with the third trolley 5 of the preceding moving body 1, and as a result,
The following moving body 1 is stopped in a non-passive state.

During travel, in the trunnion 15, the relative rotation of both rings 32A, 32B via the spherical contact portion 32C can absorb strain on the curved path. Furthermore, since the bearing 32 is located within the case body 33, it is possible to minimize the adhesion of paint and the like, and furthermore, it is possible to cover the effects of heat. and bearing 3
2 is damaged and needs to be replaced, the bracket 13 and the connecting pin 14 can be separated by unscrewing the nut 34B and removing the U bolt 34A, thereby completely exposing the bearing 32. It can be easily replaced.

In addition, as shown in the imaginary line in FIG. 4, the side plate portion 33C
A flexible cover 36 may be provided that can freely close the opening 33A from the lower end.

In addition, in the painting section, a rubber sheet 39 is applied to the slit section 38 to prevent paint from entering, as shown by the phantom line in FIG.

Effects of the Invention According to the present invention having the above configuration, since the trunnion pin and the bearing are located inside the case body, the adhesion of paint and the influence of heat can be minimized by the cover of the case body. The trunnion can always perform its intended function smoothly. Further, the connecting pin and the bracket can be separated by removing the fixing tool, thereby completely exposing the bearing and making repairs easier.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is a side view, FIG. 2 is a partially cutaway side view of the main part, FIG. 3 is a partially cutaway front view, and FIG. 4 is a trunnion part. FIG. 5 is a partially cutaway front view, FIG. 5 is a partially cutaway side view, and FIG. 6 is a bottom view. DESCRIPTION OF SYMBOLS 1... Moving body, 2... Rail, 3... Front trolley, 4... Second trolley, 5... Third trolley, 7... Transported object support device, 13... Bracket, 14... Connection pin, 15 ... trunnion, 25 ... travel drive device, 30 ... constant path,
31...Trunion pin, 32...Bearing, 32A
...Inner ring, 32B...Outer ring, 32C
... Spherical contact part, 33 ... Case body, 33A ...
Open, 34... Fixture, 34A... U bolt, 3
4B...Natsuto, 36...Flexible cover.

Claims (1)

[Scope of utility model registration request] A mobile body that can freely travel on a fixed path is constructed by connecting multiple trolleys supported and guided by rails.
A travel drive device is disposed along the fixed path, a plurality of connection pins are provided upright from the moving body side, and a conveyed object support device is provided between these connection pins via a trunnion, and the trunnion , only a lateral trunnion pin attached to the upper end of the connection pin that is orthogonal to the fixed path, a bearing that fits onto the trunnion pin, and a lower surface integrated with the bracket from the conveyed object support device side are open. 1. A conveying device using a movable body, comprising: a case body; and a fixture for removably attaching the bearing within the case body.