JPH0141544B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention comprises a combination of a transporting moving body guided by a first guide rail and a drive chain etc. that is guided by a second guide rail and propelling the transporting moving body, A conveyance device that does not use a trolley, the conveyance device comprising a trolley (usually a plurality of trolleys) whose conveyance moving body engages with the first guide rail, and an object support platform supported by the trolley. It is related to.

In this type of conveyance device, the object support table is very unstable, so means for preventing the object support table from swinging is required in an assembly work line or the like. However, when using this anti-sway means, for example, when installing guide rails that support the left and right sides of the object support, the height accuracy must be sufficiently high, otherwise the object support will be forced up. This may cause damage to various parts. Therefore, in general, the anti-sway guide rail is arranged at a slightly lower position to prevent the object support from shaking beyond a certain level, and the anti-sway guide rail is generally placed at a slightly lower position to prevent the object support from shaking beyond a certain level. I wasn't expecting that.

The present invention aims to solve these problems, and one embodiment thereof will be described below with reference to the attached illustrative drawings.

In FIGS. 1, 2, and 4, reference numeral 1 denotes a conveying moving body, which is composed of four trolleys 2 to 5 and an object support stand 6. As shown in FIG. The first trolley 2 and the second trolley 3, and the third trolley 4 and the fourth trolley 5 have universal joints 7a, 7b and 8 at both front and rear ends, respectively.
The conveyed object support stand 6 is connected by connection rods 7 and 8 having connecting rods a and 8b, and the conveyed object support stand 6 has a support member 9 having a U-shaped front view and projecting upward from the second trolley 3 and the third trolley 4. , 10. 1
1 is a main driven dog fixed to the underside of the first trolley 2, 12 is a first auxiliary driven dog fixed to the underside of the third trolley 4, and 13 is fixed to the underside of the fourth trolley 5. This is the second secondary driven dog. 14 is
A pair of left and right horizontal shaft rollers and a pair of front and rear horizontal shaft rollers are pivotally supported by each of the trolleys 2 to 5, and are fitted into a pair of left and right guide rails 15. 16 is each trolley 2~
A pair of vertical shaft rollers for steady rest are pivotally supported by the guide rail 15, and are located between the opposite upper edges of the guide rail 15. Reference numeral 17 is a vertical shaft roller for steady rest additionally pivotally supported by the second trolley 3 and the third trolley 4 that support the conveyed object support base 6,
It is located between the opposing lower edges of the guide rail 15. Reference numeral 18 denotes a continuous drive chain, which includes a trolley 21 equipped with a main pusher 19 and a leading prevention piece 20, a trolley 23 equipped with a booster pusher 22, and a pair of left and right guide rails 25 via a suspension trolley 24. It is suspended in the. Reference numeral 26 denotes a horizontal shaft roller pivotally supported by each trolley 21, 23, 24, and the guide rail 25
Fits in.

The support structure of the conveyed object support stand 6 will be explained in detail based on FIGS. 1 and 4. Vertical shafts 27 are fixedly protruded from the support members 9 and 10, respectively. The horizontal horizontal shaft 3 is connected to the rotating members 28 and 29, which are fitted to each other so as to be rotatable.
0 and 31 are provided protrudingly on both the left and right sides. The rotating members 28, 2 are provided at the portions 32, 33 that protrude downward from the central portions of both front and rear ends of the conveyed object support stand 6.
A pair of side plates 34, 35 are attached to sandwich 9 from the left and right sides, and these side plates 34, 35 have elongated holes 36 in the vertical direction, which loosely fit into the horizontal horizontal shafts 30, 31.
37 are provided. Therefore, the transported object support stand 6
is movable up and down with respect to the second trolley 3 and the third trolley 4 within the range of movement between the long holes 36, 37 and the horizontal horizontal shafts 30, 31, and at the same time, the horizontal horizontal shaft 3
It is relatively movable back and forth around 0 and 31, and relatively rotatable around a vertical axis 27 together with rotating members 28 and 29.

In the layout shown in FIG. 3, 38 is a propulsion line for the conveyance moving body 1, and in that specific section, there are a pair of left and right lines as shown in FIGS. 1, 2, and 4. Roller rails 39a and 39b for preventing shaking of the conveyed object support table are arranged in parallel. The pair of left and right roller rails 39a, 39b are equipped with a large number of horizontal axis rollers 40 that movably support both left and right ends 6a of the conveyed object support stand 6. When the conveyed object support stand 6 rides on the conveyed object support stand 6, as shown in FIG.
Both roller rails 39 are arranged so that they are slightly lifted relative to the second trolley 3 and the third trolley 4 within the vertical movement range between the horizontal axis 30 and 31.
The installation heights of a and 39b are set.

In the propulsion line of FIG. 3, with the main driven dog 11 fitted between the main pusher 19 and the advance prevention piece 20 as shown in FIG. The transport moving body 1 is pushed by the guide rail 1
5, the conveying moving body 1 is moved along the anti-swaying roller rails 39a, 39b.
When entering a specific section where
a, 39b, and is propelled while being slightly elevated relative to the second trolley 3 and third trolley 4. Therefore, while moving in the specific section, the conveyed object support stand 6 is completely supported by the pair of left and right roller rails 39a and 39b via its left and right ends 6,
It is possible to move at a certain level provided by the roller rails 39a and 39b without shaking at all.

In the above embodiment, a pair of left and right roller rails 39a,
39b, horizontal shaft rollers 41a and 41b are pivotally supported on both left and right sides of the conveyed object support stand 6 as shown by the imaginary lines in FIG.
A pair of left and right guide rails 42a, 4 movably supporting the transported object support stand 6 via 1a, 41b.
2b can also be constructed. In addition, instead of the roller rails 39a and 39b, a pair of left and right conveyors for supporting and conveying objects (for example, slat conveyors) are installed in parallel, and these pair of left and right conveyors are driven at the same speed as the drive chain 18. It can also be configured as follows. When such a conveyor is used as a means for preventing vibration, the trolley-less conveying device of the present invention can also be used as a means for conveying heavy objects.

Further, according to the configuration shown in the embodiment, even in a propulsion line that does not have a swing prevention means, the second trolley 3 and the third trolley 4 that support the transported object support stand 6 can be prevented from swinging in the left and right lateral directions. Since the movement is relatively suppressed by the presence of the vertical shaft rollers 16 and 17 for steady rest, even when the object is mounted on the object support base 6, it can be moved relatively safely.

It should be noted that it is not an absolute condition that the means for preventing the swing of the transported object support is provided at a height that lifts the transported object support, and as shown in FIG. A conveyed object support stand 6 supported at the lower limit position with respect to the third trolley 4
It may be placed at a height that exactly contacts the lower surfaces of both left and right end portions 6a, or at a height that is slightly spaced downward so as to prevent shaking beyond a certain level.

The trolley-less transport device of the present invention can be implemented as described above, and its characteristics include a transport moving body guided by the first guide rail (guide rail 15 in the embodiment) and a second guide rail ( A drive chain, etc. that propels the conveyance moving body by being guided by the guide rail 25 in the embodiment (the drive chain 18 is used in the embodiment, but a wire-shaped one may also be used)
The conveying moving body consists of a trolley (four trolleys 2 to 5 were used in the embodiment, but the number is not limited) that engages with the first guide rail, and a lifting and lowering mechanism for this trolley. The entire or part of the movement path of the conveyance moving body includes
The present invention is characterized in that anti-sway means are provided in parallel to prevent swinging of the conveyed object support base in the left and right directions.

According to such a structure of the present invention, in the section where the anti-sway means are arranged in parallel, the unstable horizontal shaking of the transported object support is prevented, and the transported object on the transported object support is prevented from moving horizontally. Various operations on objects can be carried out safely and efficiently.In particular, since the object supporting platform is supported so that it can be raised and lowered relative to the trolley, the object can be moved safely by means of anti-sway means as in the embodiment. By configuring the support stand so that it can be moved in a slightly raised state, it is possible to obtain a complete effect of preventing the support stand for the transported object from shaking. Also, if, as mentioned above, the height is such that it just contacts the lower surface of the conveyed object support stand supported at the lower limit position with respect to the trolley,
Alternatively, even in the case where the anti-sway means is arranged at a slightly lower height to prevent shaking above a certain level, the level of installation of the anti-sway means does not require the same high precision as in the past. That is, even if there is a risk that the object support is pushed up by the anti-swaying means due to poor installation accuracy, there is no risk of excessive force being applied to each part as in the conventional case, and it is safe. Therefore, the anti-swaying means can be easily installed.

In addition, in FIG. 1, 14a is a brake cam for anti-back of the conveying moving body provided on the second trolley 3, and is one of the horizontal shaft rollers 14 pivotally supported on the second trolley 3. Alternatively, it comes into sliding contact with a pair of left and right rollers 14 to prevent the rollers 14 from rotating in the opposite direction. Further, FIG. 5 shows a modification of the structure of the support part of the object support stand 6, in which the rotating members 28, 29
are fitted around the vertical shaft 27 so as to be rotatable and movable up and down, and the side plates 34 and 35 on the side of the object support stand 6 are
They fit together so that only relative rotation is possible around a pair of horizontal transverse shafts 30, 31 protruding from the rotating members 28, 29, and the elongated holes 36, 37 are eliminated.
In this case, the second trolley 3 and the third trolley 4
The vertical movement of the conveyed object support base 6 with respect to the vertical axis 27 is performed in conjunction with the vertical movement of the rotating members 28 and 29 with respect to the vertical shaft 27.

[Brief explanation of drawings]

Fig. 1 is a side view, Fig. 2 is a plan view, Fig. 3 is a plan view showing the layout, Fig. 4 is a vertical cross-sectional front view of the section where the anti-swaying means is working, and Fig. 5 is the main part. It is a vertical front view showing a modification. DESCRIPTION OF SYMBOLS 1... Transportation moving body, 2-5... First trolley to fourth trolley, 6... Transported object support stand, 7, 8
...Connection rod, 11...Main driven dog, 19...
...Main pusher, 36, 37...Elongated hole for allowing the transported object support platform 6 to rise and fall, 39a, 39b...Roller rail for preventing the transported object support platform from swinging, 41a, 4
1b...Horizontal shaft roller pivotally supported on the conveyed object support stand 6, 42a, 42b...Guide rails for preventing shaking.

Claims (1)

[Scope of Claims] 1. The conveyance movable body is composed of a combination of a conveyance movable body guided by a first guide rail and a drive chain etc. that is guided by a second guide rail and propels the conveyance movable body, and the conveyance movable body is guided by a second guide rail. is equipped with a trolley that engages with the first guide rail, and a conveyed object support platform that is supported by the trolley so as to be movable up and down;
A trolley-less conveyance device comprising anti-sway means for preventing the support base for the conveyed object from swinging in the left and right directions. 2. The device according to claim 1, wherein the anti-sway means supports the right and left sides of the object support stand in a state where they are lifted relative to the trolley.