JP2570446Y2 - Transfer device - 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 transporting an object such as a vehicle placed on a transport surface by a transport arm.

[0002]

2. Description of the Related Art A transfer apparatus of this type is disclosed in Japanese Patent Application No. 4-359110 previously proposed by the present applicant. In this device, a transport surface extending in the front-rear direction and a transport drive mechanism are provided side by side on an upper part of a bogie for transporting a vehicle, and a transport arm is protruded from the drive mechanism to an upper side of the transport surface. The arm is used to move the vehicle placed on the transport surface in the front-rear direction.

[0003]

In order to protect the above-mentioned drive mechanism, it is preferable to cover the upper side with a cover. However, since an opening for projecting the transfer arm needs to be formed in the side surface of the cover in the front-rear direction, the upper edge portion of the opening is easily bent. Therefore, when the upper surface of the cover is stepped on for maintenance or the like, the drive mechanism may be damaged.

In order to solve this problem, it is conceivable to increase the thickness of the upper surface of the cover.
The disadvantage that the weight of the cover increases is newly generated.
SUMMARY OF THE INVENTION It is an object of the present invention to achieve both prevention of deflection of a cover of a transport drive mechanism and reduction in weight.

[0005]

According to the present invention, in order to achieve the above object, as shown in, for example, FIGS. 1 to 4, a transport device is constituted as follows. A transport surface S extending in the front-rear direction and a transport drive mechanism M are provided side by side on the upper portion of the base 1, and an upper cover plate 11 a that covers the upper side of the drive mechanism M is supported by the base 1, The transfer arm 18 projects from the drive mechanism M to the upper side of the transfer surface S, and the arm 18 is configured to be reciprocally movable in the front-rear direction by the drive mechanism M.
A support member 25 is provided below the upper surface cover plate 11a at an intermediate portion of the movement region R in the front-rear direction, and the support member 25 is pressed and oscillated downward by the movement of the transfer arm 18 in the front-rear direction. The supporting member 25 is supported on the base 1 in a state where the supporting member 25 can be switched between a downward swinging posture Y and a support posture X for supporting the upper surface cover plate 11a from below. Elastic means 28 for elastically pressing the moving posture Y to the support posture X is provided over the base 1 and the support tool 25.

[0006]

The present invention operates as follows, for example, as shown in FIG. In a rest state or a standby state in which the transfer arm 18 is not driven, the support tool 25 is switched to the support posture X of the solid line by the elastic means 28, and the support tool 25 supports the upper cover plate 11a from below. ing.

When the transfer arm 18 is driven to the right in the drawing, first, the pressing force of the arm 18 causes the support tool 25 to swing to a downward swinging posture Y in a two-dot chain line. When the arm 18 has passed, the support tool 25 is moved by the elastic means 28 to the initial support posture X.
And supports the upper surface cover plate 11a from below.

[0008]

The present invention has the following effects because it is constructed and operates as described above. When the transfer arm is in a rest state or a standby state, the upper cover plate can be supported from below by the support tool, so that the upper cover plate can be prevented from bending. In this case, the top cover plate described above can be made lightweight because it is not necessary to increase the plate thickness to prevent bending. Therefore, it is possible to achieve both prevention of bending of the upper cover plate of the transport drive mechanism and reduction in weight.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS. First, a vehicle transporting trolley provided with the transport device of the present invention will be described with reference to a plan view of FIG.

A carriage 1 for transporting a vehicle, which is a base of a transfer device.
A frame 2 extending in the front-rear direction (left-right direction in FIG. 2; the same applies hereinafter); and vehicle-transporting rollers 3.3 provided on both left and right sides of the frame 2 at predetermined intervals in the front-rear direction.
Inner running wheels 4.4 supported on frame inner portion 2a
And outer running wheels 5.5 supported by outer frame portions 2b. Each of the rollers 3 is formed in a long cylindrical shape. The inner running wheels 4 are connected to a running drive motor 6 by chain transmission means 7, respectively.

A transport surface S (see FIG. 1) is formed by the upper ends of the plurality of rollers 3 arranged in the front-rear direction, and the front wheel 8a and the rear wheel 8b of the vehicle can be mounted on the transport surface S. You. A transport drive mechanism M for transporting the vehicle is provided in the above-described frame inner portion 2a.

That is, a driving chain 13 having a rectangular shape in a plan view is stretched over the four sprockets 12 provided in the above-mentioned frame inner portion 2a. The base end of the transfer arm 18 is connected to the drive chain 13 by a pin 19, and the tip end of the arm 18 projects above the roller 3. Furthermore, in the above-mentioned part 2a in a frame,
The support block 20 is supported movably back and forth. The arm 18 is supported by four guide rollers 20a provided on the block 20 so as to be movable in the left-right direction (vertical direction in FIG. 2). The lower left sprocket 12 of the above four sprockets 12 is connected to the output shaft of a drive motor 16 with a speed reducer by a chain transmission means 14.

The transfer arm 18 operates as follows, as shown in FIG. In a standby state in which the vehicle is not transported, the arm 18 is waiting at a position A in the drawing. When lowering the rear wheels 8b, 8b of the vehicle mounted on the carriage 1, the drive chain 13 is driven to rotate counterclockwise. Then, first, the arm 18 moves to the left in the figure with the rotation of the chain 13 and then advances to the position B above the transport surface S.

Next, the arm 18 is moved rightward in the drawing by the rotation of the chain 13, contacts the rear wheel 8b at the position C, and moves from the position C to the position D, whereby the rear wheel is moved. 8b is pressed rightward to touch the parking / stopping section P. Subsequently, the arm 18 retreats to the inside of the bogie 1 due to the rotation of the chain 13, and then moves leftward to return to the initial position A, where it stands by. In this standby state, when the chain 13 is rotationally driven again in the counterclockwise direction, the arm 1 at the position A is moved.
8 returns to the original A position through the above B position, C position and D position in order.

Next, a cover for covering the transport drive mechanism M and a support structure of the cover will be described with reference to FIGS.
This will be described with reference to FIG. FIG. 1 is a perspective view of the cart 1 described above. FIG. 3 is a sectional view taken along line III-III in FIG. FIG.
FIG. 4 is a sectional view taken along line IV-IV in FIG. 3.

A substantially box-shaped cover 11 is attached to the frame inner portion 2a by a top cover plate 11a and a side cover plate 11b.
The upper part of the transport drive mechanism M is covered by the above. An opening 21 extending in the front-rear direction is formed on the right side of the side cover plate 11b in the drawing. Arm 18 above
Is projected above the transport surface S through the opening 21.

A plurality of support columns 22 are provided in the frame inner portion 2a around the transport drive mechanism M in order to support the upper cover plate 11a from below. Further, two support members 25 are provided in the vicinity of the opening 21 at an intermediate portion of the movement region R of the arm 18 in the front-rear direction.

The support member 25 is constructed as follows, mainly as shown in FIGS. A pivot 27 is provided between the pair of brackets 26 fixed to the frame inner portion 2a, and the lower portion of the support 25 is swingably supported by the pivot 27. A torsion spring 28 is provided for elastically pressing the support member 25 from a downward swing posture Y (see a two-dot chain line diagram in FIG. 4) to a support posture X (see the same solid line diagram in FIG. 4).

The torsion spring 28 is externally fitted to the pivot 27. Further, a pin 29 projects from a lower portion of the support tool 25 toward one bracket 26, and another pin 30 projects from a lower portion of the one bracket 26 toward the support tool 25. These pins 29 and 30 are sandwiched by both ends of the torsion spring 28 from both front and rear sides (left and right sides in FIG. 4).

As shown in FIG. 4, the support tool 25 operates as follows with the movement of the arm 18. When the arm 18 moves rightward in FIG. 4, first, the arm 18 contacts the support tool 25 in the support posture X and presses the support tool 25 rightward. Then, the support tool 25 is attached to the torsion spring 2.
The arm 18 swings to the downward swinging posture Y against the elastic pressure of 8, thereby allowing the arm 18 to move rightward. After the arm 18 has passed, the torsion spring 2
The support tool 25 returns to the support posture X by the elastic pressure of 8.

When the arm 18 is moved to the left in the drawing, the support tool 2 is pressed by the arm 18.
5 swings to the left downward swinging posture against the elastic pressure of the torsion spring 28, and the leftward movement of the arm 18 is allowed. Then, after the arm 18 passes, the support tool 25 returns to the support posture X by the elastic force of the torsion spring 28.

According to the above embodiment, when the transfer arm 18 is at rest or in a standby state, the upper cover plate 11a can be supported from below by the support member 25, so that the upper cover plate 11a can be prevented from bending. In this case, the upper cover plate 11a can be made lightweight because it is not necessary to increase the plate thickness in order to prevent bending.

FIG. 6 shows a modification of the above-described transport device. In this modification, members having the same configuration as those of the above-described embodiment are given the same reference numerals in principle. A block 34 that is moved in the front-rear direction (the left-right direction in the drawing) by the hydraulic cylinder 33 is provided in the frame inner portion 2a. A pair of left and right transfer arms 18 are supported on the upper surface of the block 34 so as to be swingable in the horizontal direction. The arms 18 are switched by the hydraulic motor 35 between a state E (see a solid line) protruding above the roller 3 and a state F (see a dashed line) retreating from the roller 3. The arms 18, the hydraulic cylinder 33, the block 34, and the hydraulic motor 35 constitute a transport drive mechanism M, and the drive mechanism M is covered by the cover 11.

When lowering the rear wheels 8b of the vehicle from the bogie 1, the arms 18 are first switched from the retracted state F to the extended state, and in this state, the hydraulic cylinder 33 is moved from the state shown by the solid line in FIG. What is necessary is just to extend to the state of the dotted line diagram. In addition, the above-mentioned support tool (not shown) is provided at an intermediate portion in the front-rear direction of the movement area of each arm 18 as in the above-described embodiment.

The above embodiment and modifications can be modified as follows. Instead of providing two support tools 25, only one support tool 25 may be provided, or three or more support tools 25 may be provided. The elastic means for elastically pressing the support member 25 to the support position X may be constituted by a leaf spring, rubber or the like instead of the torsion spring 28. Same as above 25
May swing to only one side instead of swinging to both sides.

The transport surface S has a plurality of cylindrical rollers 3
May be constituted by the upper ends of a plurality of spherical rollers, or may be constituted by a sliding surface of a flat plate. The cover 11 may be such that the side cover plate 11b is omitted and the top cover plate 11a is supported only by the support columns 22. Further, the transfer device of the present invention includes a transfer arm 1
It is only necessary that the object 8 is used to convey the object to be conveyed. In this case, the base of the transfer device may be a stationary table instead of the carriage 1.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of a transport device according to the present invention.

FIG. 2 is a plan view of a carriage provided with the above-described transfer device.

FIG. 3 is a sectional view taken along line III-III in FIG.

FIG. 4 is a sectional view taken on line IV-IV of FIG. 3;

FIG. 5 is an operation explanatory view of a transfer arm of the transfer device.

FIG. 6 is a diagram showing a modified example of the above-described transport device.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Transportation trolley (base), 11a ... Top cover plate, 1
8: transfer arm, 25: support tool, 28: torsion spring
(Elastic means), M: transport drive mechanism, X: support posture,
Y: downward swinging posture, R: moving area, S: transport surface.

Claims (1)

(57) [Scope of request for utility model registration] 1. A top surface cover for covering an upper side of the drive mechanism (M) with a transfer surface (S) extending in the front-rear direction and a transfer drive mechanism (M) provided side by side on an upper portion of the base (1). Board (11a)
Is supported on the base (1), and the transfer arm (18) is projected from the drive mechanism (M) above the transfer surface (S), and the transfer arm (18) is driven by the drive mechanism. A mechanism (M) is configured to be capable of reciprocating in the front-rear direction, and a support tool ( twenty five)
The support tool (25), the downward swinging posture (Y), which is pressed and rocked downward by the forward and backward movement of the transfer arm (18), and the upper cover plate (11a) It is supported on the base (1) in a state where it can be switched to the support posture (X) for supporting from below, and the support tool (25) is moved from the swing posture (Y) to the support posture (X). X) elastic means (28) for pressing against the base
A transport device provided between (1) and the support tool (25).