JP2004277017A - Mechanical type transportation device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a mechanical type transportation device allowing the use of two types of floor type and overhead type, facilitating maintenance, providing excellent work environment, and preventing reliability of running from being affected by installation precision and having a simple structure. <P>SOLUTION: This mechanical type transportation device is provided with a rail 15, a rotary shaft 17 provided in parallel along the rail 15, a carrier 26 having a pair of front and rear side running carriers 23, 24 provided along the rail 15 and a pedestal 25 for load, and driven rollers 54, 55 provided in the pair of front and rear side running carriers 23, 24, respectively, and pressed and abutted on an outer peripheral face 53 of the rotary shaft 17. The driven rollers 54, 55 are turned in synchronization. An angle α formed by a tangential line s of the driven rollers 54, 55 and a ridge line n of the rotary shaft is controlled between a stop angle α<SB>0</SB>in 90 degree condition and a conveyance angle α<SB>1</SB>smaller than 90 degrees at a point 0 where the driven rollers 54, 55 come into contact with the rotary shaft 17 to move and stop the carrier 26. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
TECHNICAL FIELD The present invention relates to a mechanical transport device capable of transporting an object to be transported by moving and stopping the carrier without providing an electric motor on the carrier traveling along a rail.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, as one of devices for transporting a transport object in a building, an overhead type transport device 170 shown in FIG. 14 is used. In the transfer device 170, a C-shaped carrier main body 172 and a carrier main body 172 having cross sections that can cover three sides of a cross section of an I-shaped rail 171 provided via a rail mounting member (not shown) are provided. A traveling roller 174, which is an example of two guide rollers arranged on the upper surface 173a of the upper flange 173 of the rail 171 at intervals in the longitudinal direction of the rail 171, and a rail provided on the carrier body 172; 171 upper and lower guide rollers 178 and 179 for guiding the carrier body 172 in the left-right direction while rolling against the respective side surfaces 176 and 177 of the upper flange 173 and the lower flange 175; 172, and drives the running roller 174 via a speed reduction mechanism (not shown). And a dynamic motor 180. As a method of supplying power to the electric motor 180, a plurality of (five in FIG. 14) power supply lines 182 are provided along the vertical direction of the web 181 of the fixed rail 171, and a current collector trolley is provided on the carrier main body 172 side. 183 are attached.
[0003]
In addition, as another device for transporting an object to be transported, a trolley type (floor type) transport device 190 shown in FIG. 15 is known. In the transfer device 190, two wheels 194 and 195 that roll on a pair of rails 192 and 193 arranged at parallel intervals on a floor surface 191 (or a deck surface) are provided at a lower portion of the traveling frame 196. The traveling carriage 197 is made to travel without providing the traveling frame 196 with an electric motor. That is, in order to drive the traveling carriage 197, the driving roller shaft 198 is disposed in parallel along the pair of rails 192, 193 and between the rails 192, 193, and the rotating driving roller shaft 198 is supported on the floor 191 by a support means (not shown). In the center lower portion of the traveling frame 196, one or two propulsion transmission rollers (driven rollers) 200 which are rotated by contact with the driving roller shaft 198 are provided via the mounting bracket 199. Have been. The rotation of the drive roller shaft 198 is performed via an electric motor and a speed reduction mechanism provided on the floor surface 191, and the traveling frame 196 is not provided with an electric motor for driving the traveling carriage 197. In order to obtain a propulsion force via the drive roller shaft 198, the rotation axis of the propulsion force transmission roller 200 is set at an intersection angle of about 45 ° with the rotation axis of the drive roller shaft 198 (optimum efficiency).
[0004]
[Problems to be solved by the invention]
However, in the above-mentioned conventional transport apparatus, there are the following problems to be solved.
In the transfer device 170, it is necessary to provide a power supply line 182 on the rail 171 and to provide a current collection trolley 183 on the carrier body 172, which complicates the structure, complicates maintenance, and removes dust and dust. And the working environment was bad. Further, since the low-speed start and the low-speed stop at the time of starting and stopping are performed by electric control, the control is complicated.
On the other hand, the transport device 190 is limited to a floor type and is not suitable for an overhead type, so that the operation width is narrow, and the running reliability is greatly affected by the installation accuracy of the rails 192 and 193. There was a disadvantage.
[0005]
The present invention has been made in view of such circumstances, and it is possible to use both the floor type and the overhead type, the structure is simple, the maintenance is easy, the working environment is good, the running reliability is high, and the installation accuracy is high. It is an object of the present invention to provide a mechanical transfer device that is hardly affected by the above.
[0006]
[Means for Solving the Problems]
A mechanical transport device according to a first aspect of the present invention, which meets the above object, includes a rail supported via a rail mounting member,
A rotating shaft having a circular cross section, which is provided in parallel with the rail via the rail, and is driven to rotate,
A plurality of guide rollers for rolling the rails are respectively attached, and a pair of front and rear traveling carts provided at intervals along the rails, and a load mount connecting the pair of front and rear traveling carts. Having a carrier,
A pair of front and rear traveling carts, each of which is provided on each of the traveling carts, and includes a driven roller pressed against and contacting the outer peripheral surface of the rotating shaft;
At the point where the driven roller contacts the rotary shaft, the angle between the tangent line of the driven roller and the ridgeline of the rotary shaft is set between the stop angle in the 90-degree state and the transport angle smaller than 90 degrees. To move and stop the carrier.
With this, it is pressed against the outer peripheral surface of the rotating shaft that is driven to rotate, and furthermore, the tangential line of the driven roller provided on each of a pair of front and rear traveling vehicles provided at intervals along the rail. The carrier can be moved and stopped by controlling the angle of the rotating shaft with respect to the ridge line, so that there is no need to provide an electric motor on the carrier.
[0007]
The mechanical transport device according to a second aspect of the present invention is the mechanical transport device according to the first aspect, wherein the driven rollers of the pair of front and rear traveling carts are synchronized via a first link mechanism. I have. This synchronizes the driven rollers of the pair of front and rear traveling vehicles via the first link mechanism, thereby simplifying the synchronization structure.
The mechanical transport device according to a third aspect of the present invention is the mechanical transport device according to the second aspect, wherein the front and rear traveling carts are each provided with a driven roller that is turned by the second link mechanism in pairs. , The second link mechanism is driven by the first link mechanism. Thus, by driving the first link mechanism, the driven roller can be turned through the paired second link mechanism, so that a drive source for the second link mechanism is not required.
[0008]
A mechanical transport device according to a fourth aspect of the present invention is the mechanical transport device according to the second or third aspect, wherein the first link mechanism has another carrier or a tilt of a stopper plate provided at a predetermined position. A carrier stop member is provided in contact with the portion to smoothly hold the driven roller at a stop angle. This allows the carrier stop member provided on the first link mechanism to abut another carrier or the inclined portion of the stopper plate provided at a predetermined position, thereby stopping the carrier regardless of the rotation of the rotating shaft. can do.
[0009]
The mechanical transport device according to a fifth aspect of the present invention is the mechanical transport device according to the first to fourth aspects, wherein the rail is fixed to the building via a rail mounting member having a C-shaped cross section, and the transport target is a carrier. And transport it. As a result, the object to be conveyed is hung on the carrier and conveyed, so that it is not necessary to provide a conveying device on the floor.
The mechanical transport device according to a sixth aspect is the mechanical transport device according to the first to fourth aspects, wherein the rail is fixed on the floor via a rail mounting member, and the transport target is placed on the carrier. Place and transport. Thus, the object to be transported is transported along the rail fixed on the floor via the rail mounting member, so that the handling of the object to be transported to the carrier is facilitated.
[0010]
BEST MODE FOR CARRYING OUT THE INVENTION
Next, embodiments of the present invention will be described with reference to the accompanying drawings to provide an understanding of the present invention.
Here, FIGS. 1A and 1B are a plan view and a front view, respectively, of a mechanical transport device according to an embodiment of the present invention used for placing and transporting automobile parts, and FIG. FIG. 3 is a cross-sectional plan view of the carrier of the mechanical transport device, FIG. 4 is a front sectional view of the carrier of the mechanical transport device, and FIG. 5 is a front traveling of the carrier of the mechanical transport device. FIG. 6 is a plan view showing the relationship between the trolley and the driven roller, FIG. 6 is a plan view showing the relationship between the rear traveling trolley of the carrier of the mechanical transfer device and the driven roller, and FIGS. FIG. 8 is an explanatory view of a turning mechanism of a driven roller when the carrier of the mechanical transport device is transported and stopped by the first and second link mechanisms. FIG. 8 is a diagram illustrating a front traveling cart and a driven roller of the carrier of the mechanical transport device. Enlarged front sectional view, FIG. 9 shows the mechanical transfer 10 is an enlarged front sectional view of a rear traveling vehicle and a driven roller of the carrier, FIG. 10 is an enlarged plan sectional view of a front traveling vehicle and a rear traveling vehicle in front of the carrier of the mechanical transfer device, and FIGS. Each of a plan view, a front view, and FIGS. 12A and 12B of a mechanical transfer device according to another embodiment of the present invention used for suspending and transferring a transfer object is shown in FIG. 11B. FIGS. 13A and 13B are cross-sectional views taken along arrows AA and BB, respectively, and FIGS. 13A and 13B are mechanical conveyance according to another embodiment of the present invention used for suspending and conveying objects to be transferred. It is a plane sectional view and a front sectional view of a carrier of the device.
[0011]
As shown in FIGS. 1 (A) and 1 (B) and FIGS. 2 to 4, a mechanical transport device 10 according to an embodiment of the present invention is a floor type (trolley type) transport used for assembling automobile parts. A rail which is an example of a rail mounting member provided via a plurality of jack bolts 13 to each of a plurality of base members 12 fixed at predetermined parallel intervals in the front-rear direction of the floor surface 11 An I-beam 15, which is an example of a rail supported by the gantry 14, is provided at an intermediate portion in the height direction of the I-beam 15, and on the side opposite to the rail gantry 14 in parallel with the I-beam 15 via a mounting bracket 16. And a rotating shaft 17 having a circular cross section.
[0012]
In addition, the mechanical transport device 10 is an example of a guide roller, and two traveling rollers 18 and 19 that roll on the upper surface of the upper flange of the I-beam 15 and roll both sides of the upper flange of the I-beam 15. Four upper vertical guide rollers 20 that move, four lower vertical guide rollers 21 that roll on both sides of the lower flange of the I-beam 15, and two lower rollers that roll on the lower surface of the lower flange of the I-beam 15. Horizontal guide rollers 22 and 22a are attached, and a pair of front and rear traveling carts 23 and 24 and a pair of fronts provided at a center-to-center distance K along the length of the I-beam 15 are provided. A carrier 26 having a load frame 25 having both ends in the front-rear direction connected to upper portions of the rear traveling vehicles 23 and 24 is provided. Further, a white body 27 of an automobile, which is an example of an object to be conveyed, is mounted on a load frame 25 formed in a frame shape of the carrier 26, and various parts are conveyed along the I-beam 15. It is assembled and stops at a predetermined stop position. Hereinafter, these will be described in detail.
[0013]
As shown in FIGS. 1 (A), 1 (B) and 2, the I-beam 15 on which the carrier 26 travels is divided in the length direction (front-back direction) and has a fixed length P (= about 5 m). Are connected to each other. One I-beam unit 15a is supported via five sets of base members 12 arranged perpendicular to the running direction (front-back direction) and a rail mount 14 provided on the base members 12. The base member 12 is made of a channel steel, and is fixed to the floor surface 11 by two anchor bolts 28 and nuts 29.
[0014]
The rail base 14 is provided orthogonally to the elongated rectangular flange plate 30 in which the interval T between the upper surface 12a and the lower surface 14a of the base member 12 is adjusted by the jack bolt 13, and is orthogonal to the flange plate 30. It has a curved plate 31 formed in a C shape, and a flange plate 32 provided perpendicularly to the tip of the curved plate 31, and the I-beam unit 15 a is screwed to the flange plate 32. As shown in FIG. 2, the I-beam unit 15a is provided with three hollow portions on the upper flange and the lower flange, respectively, in order to reduce the weight, and on the lower surface of the upper flange and the upper surface of the lower flange, Attachment protrusions are formed to face each other in the vertical direction with the web interposed therebetween.
[0015]
As shown in FIGS. 1A and 1B, the rotating shaft 17 is also divided and connected to a divided rotating shaft 17a having a length P (about 5 m), like the I-beam 15, and is formed from a pipe. Each of the divided rotary shafts 17a is rotatably supported by the I-beam unit 15a by ten mounting brackets 16 provided at predetermined intervals in the length direction. Driving means 33 for rotating each divided rotary shaft 17a is provided for each I beam 15a.
[0016]
As shown in FIGS. 1 (A) and 1 (B), the driving means 33 is parallel to the chain sprocket 34 provided at the front end of the divided rotary shaft 17a and the curved plate 31 of the rail mount 14 on the web of the I-beam unit 15a. A sprocket 37 fixed to the output shaft of the electric motor 36 with a reducer, and a chain sprocket 37 fixed to the output shaft of the electric motor 36 with a reducer, An endless chain 38 wound around the chain sprockets 34 and 37 and capable of passing through a through hole formed in the web of the I-beam unit 15a.
[0017]
In addition, the shaft ends of the adjacent divided rotary shafts 17a are formed so as to be connected and disconnected by using, for example, a shaft joint using a key. The electric motor 36 with a speed reducer is configured to perform variable speed control (1/7) by an inverter. With such a configuration, each of the divided rotary shafts 17a can be driven independently and at a variable speed.
[0018]
As shown in FIG. 2 to FIG. 4, the front traveling vehicle 23 (the rear traveling vehicle 24 is substantially the same as the front traveling vehicle) is vertically arranged at a parallel interval in the traveling direction, and is viewed from the side. A rectangular upper part that connects the front and rear plates 39 and 40 (in the case of the rear traveling vehicle 24, the front and rear plates 39a and 40a) and the opposing inner upper ends of the front and rear plates 39 and 40. A bogie including a connecting plate 41 (an upper connecting plate 41a in the case of the rear traveling bogie 24) and a main connecting member 42 having a C-shaped cross-section that connects the opposing inner intermediate portions of the front and rear plates 39, 40. It has a frame 43 (in the case of the rear traveling bogie 24, a bogie frame 43a).
[0019]
As shown in FIG. 2 to FIG. 4, two trolley frames 43 (the trolley frames 43a are also substantially the same) are mounted on upper portions outside the front and rear side plates 39 and 40 via mounting brackets 44 and 44a, respectively. Running rollers 18 and 19 are attached. Also, two horizontal guide rollers 22, 22a are attached to the outer lower parts of the front and rear side plates 39, 40 via mounting brackets 45, 45a, respectively. Further, four upper vertical guide rollers 20 are mounted on the outer upper portions of the front and rear side plates 39 and 40 via mounting brackets 46 and 46a, respectively. Further, four lower vertical guide rollers 21 are attached to lower main connecting members 42 inside the front and rear side plates 39 and 40 via mounting brackets 47 and 47a, respectively.
[0020]
As shown in FIGS. 2, 5, 6, and 8 to 10, the traveling rollers 18, 19 each have two bearings 49 on a fixed shaft 48 having a bolt structure fixed to the mounting brackets 44, 44 a. On the other hand, the horizontal guide rollers 22 and 22a are also rotatably provided via two bearings 51 on a fixed shaft 50 of a bolt structure fixed to the mounting brackets 45 and 45a, respectively. ing. Further, the upper vertical guide roller 20 and the lower vertical guide roller 21 can also be rotated via bearings (not shown) on fixed shafts 52, 52a of a bolt structure fixed to the mounting brackets 46, 46a, 47, 47a, respectively. It is provided in.
[0021]
As shown in FIGS. 3 to 10, in particular, FIGS. 7A and 7B, two driven rollers 54 and 55 are respectively attached to the main connecting members 42 and 42 a of the bogie frames 43 and 43 a by rotating shafts. 17, and at the point O where the driven rollers 54 and 55 and the rotating shaft 17 are in contact with each other, the angle between the tangent s of the driven roller 54 (same for 55) and the ridge line n of the rotating shaft 17. α is the stop angle α in the 90 degree state. ₀ (FIG. 7B) and the transfer angle α smaller than 90 degrees ₁ (In FIG. 7A, α ₁ = 45 °) to move and stop the carrier 26. In other words, the two driven rollers 54 (same for 55) are arranged to be inclined with respect to the axis of the rotating shaft 17, and both the two driven rollers 54 and the two driven rollers 55 It is configured to be mechanically synchronized so that the angle α is adjusted simultaneously. Note that the mounting bracket 16 is provided at a position that does not interfere with the driven rollers 54 and 55 that roll the rotating shaft 17.
[0022]
A mechanism for simultaneously mechanically adjusting the angle α of the driven rollers 54 and 55 will be described below.
As shown in FIG. 3 to FIG. 5, FIG. 7A, FIG. 7B, and FIG. 8, the center position of the lower ends of the two driven rollers 54 (same for 55) in the roller width direction is the upper end of the rotating shaft 17. (Coincides with ridge line n) at point O. As shown in FIGS. 7A and 7B, two driven rollers 54 arranged at a center interval H in the front-rear direction are connected to a second link mechanism 56 (in the case of the driven roller 55, the second The link mechanism 56a moves between the time of conveyance (FIG. 7A) and the time of stoppage (FIG. 7B).
[0023]
As shown in FIGS. 5, 6, 7A, 7B and 8, the second link mechanism 56 (same for 56a) has a center interval H in the longitudinal direction of the rotating shaft 17 in plan view. And a pair of revolving arms 57, 58 attached to the main connecting member 42 so as to be rotatable about a point O in plan view, and provided at a distance t from each point O of the revolving arms 57, 58. And a parallel arm 59 (shown by broken lines in FIGS. 7A and 7B) that can support the two shaft centers p. The parallel arm 59 is formed in a T-shape in plan view, at an intermediate position between two shaft centers p of the parallel arm 59 and outside the shaft center p (FIGS. 7A and 7B). On the right side, a slide piece 60 having a circular cross section is provided to protrude upward.
[0024]
The slide piece 60 is formed of an elongated hole formed at the right end of an I-shaped rotating arm 62 that rotates around a fixed shaft 61 disposed at a center position between the traveling rollers 18 and 19 of the main connecting member 42. The slide hole 60a is slidably provided. As shown in FIGS. 7 (A) and 7 (B), the left end of the rotating arm 62 of the second link mechanism 56 is operated by rotating the rotating arm 62 around the fixed shaft 61 and a driven roller is provided. 54 at stop angle α ₀ A carrier stopping member 63 for holding the carrier is provided.
[0025]
As shown in FIGS. 6 and 9, the second link mechanism 56 a of the rear traveling vehicle 24 is substantially the same as the second link mechanism 56 of the front traveling vehicle 23, but the sliding piece 60 of the parallel arm 59 is It is slidably provided in a slide hole 60a formed of a long hole formed at the right end of the I-shaped rotating arm 62a. As shown in FIGS. 7A and 7B, the rotation arm 62a is the same as the rotation arm 62, and the rotation arm 62 is provided with a carrier stop member 63 via a virtual line S. However, the carrier stop member 63 is not provided on the rotating arm 62a.
[0026]
As shown in FIGS. 3 to 9, end portions of the rotating arms 62 and 62 a provided on the front traveling vehicle 23 and the rear traveling vehicle 24 that rotate around fixed shafts 61 on the opposite side to the fixed shaft 61. Are connected to each other via a turnbuckle type connecting member 65 having a center-to-center distance K. The turnbuckle-type connecting member 65 can be set to a predetermined length (center distance K) by operating a turnbuckle mechanism. The first link mechanism 65b includes the rotating arms 62 and 62a and the turnbuckle-type connecting member 65.
[0027]
Therefore, the second link mechanisms 56 and 56a are driven by the first link mechanism 65b, are mechanically synchronized, and can simultaneously adjust the angle α of the driven rollers 54 and 55. As shown in FIGS. 8 to 10, the driven roller 54 (same for 55) is always transported as shown in FIG. 7A by urging means 57a, 58a having a pair of revolving arms 57, 58 provided with coil springs. Angle α ₁ Is held in.
[0028]
As shown in detail in FIG. 8, a driven roller frame 67 is attached to the lower ends of the swing arms 57 and 58 via a rotating shaft 66, and is provided horizontally below the driven roller frame 67. The driven roller 54 (same for 55) is rotatably supported on the fixed shaft 68 via two bearings 69. At both ends of the fixed shaft 68, coil springs 70 are provided for urging the driven roller 54 so as to always press and contact the outer peripheral surface 53 of the rotating shaft 17.
[0029]
As shown in FIGS. 5, 7A, 7B, and 8, a guide roller 72 is freely rotatable at the distal end of the carrier stop member 63 via a fixed shaft provided perpendicular to the mounting plate 71. It is provided in. The guide roller 72 of the traveling carrier 26 abuts on a stopper plate 73 provided on another adjacent carrier 26 (not shown) to operate the first link mechanism 65b having the rotating arm 62. It has become. That is, by operating the rotating arm 62 from the traveling state of FIG. 7A to the stopped state of FIG. 7B to stop the traveling of the driven roller 54, it is possible to prevent the rear collision of the carriers 26. it can.
[0030]
As shown in FIGS. 3 and 5, the stopper plate 73 is formed with an inclined portion 74 that is inclined inward as viewed in plan along the traveling direction of the I-beam 15. When the stopper plate 73 moves forward, the guide roller 72 is guided along the inclined portion 74, the angle α of the driven roller 54 gradually increases, and the traveling speed of the carrier 26 decreases. , Angle α ₀ = 90 °.
[0031]
Next, as shown in FIGS. 1A and 1B, a method and an operation of transporting a white body 27 of an automobile using a mechanical transport device 10 according to an embodiment of the present invention will be mainly described with reference to FIGS. This will be described with reference to FIG.
(1) At a predetermined mounting position, the white body 27 of the vehicle is mounted on the load rack 25 connected to the upper part of the pair of front and rear traveling vehicles 23, 24 of the carrier 26.
(2) As shown in FIG. 7A, the angle α of the driven rollers 54, 55 provided on the front and rear traveling carts 23, 24 is the transport angle α. ₁ = 45 ° (optimum running).
[0032]
(3) The divided rotary shaft 17 a at the portion where the driven rollers 54 and 55 provided on the front and rear traveling carts 23 and 24 abuts is rotated via the driving means 33.
(4) The outer peripheral surface 53 of the rotating divided rotary shaft 17a is urged by the coil spring 70 so as to press and contact with the outer peripheral surface 53, and the transport angle α is applied to the divided rotary shaft 17a. ₁ = 45 °, the driven rollers 54 and 55 can transmit the propulsive force to the front and rear traveling carriages 23 and 24 by the frictional force between the driven rollers 54 and 55 and the white body 27 of the vehicle. The mounted carrier 26 can be advanced while smoothly guiding along the I-beam 15 by the plurality of guide rollers.
[0033]
(5) Immediately before the front traveling cart 23 of the carrier 26 passes the tip of the divided rotating shaft 17a, the divided rotating shaft 17a adjacent to the front of the rotating divided rotating shaft 17a is made the same via another driving means 33. The carrier 26 is operated so that the carrier 26 can continuously travel between the divided rotary shafts 17a.
(6) Immediately after the rear traveling carriage 24 of the carrier 26 has passed the rear end of the rotating divided rotary shaft 17a, the rotation of the divided rotary shaft 17a is stopped via the driving means 33.
[0034]
(7) The operations of (5) and (6) are repeated a predetermined number of times, and the white body 27 of the vehicle is transported to a predetermined transport location.
(8) When the carrier 26 is stopped at a predetermined transport location, the rotation of the rotating divided rotary shaft 17 a is stopped by the driving unit 33.
For example, when the white body of the automobile whose assembly has been completed is removed from the carrier 26 and the carrier 26 is moved back to the original position, the divided rotary shaft 17a is rotated in the reverse direction and the same operation as described above is performed.
[0035]
As shown in FIGS. 11 to 13, the mechanical transport device 10 a according to another embodiment of the present invention is an overhead type, and the mechanical transport device 10 of the floor type is different from the transport type (transport) of the transport target. Although the symmetrical object is suspended and transported by a carrier), the structures of the rail, the rotating shaft, the carrier, and the driven roller are basically the same. In the mechanical transfer device 10a, only the unit length P is shown for simplification of the description.
[0036]
As shown in FIGS. 11 to 13, the mechanical transport device 10 a is connected to a horizontal suspending member 75 (unit length P) suspended horizontally in the front-rear direction via a beam member (not shown) of the building. I-beam 15b and I-beam 15b, which are examples of rails supported at the lower ends of three rail hanging members 76a, 76b, and 76c having a C-shaped cross section, which are examples of rail mounting members fixed at parallel intervals. And a split rotation shaft 17b provided in parallel with the I-beam 15b via a mounting bracket 16a provided at an intermediate portion in the height direction of the above and on the side opposite to the rail hanging members 76a, 76b, 76c. .
[0037]
The mechanical transport device 10a further includes a pair of front and rear traveling vehicles 23a and 24a provided at a center-to-center distance k along the I-beam 15b, and a pair of front and rear traveling vehicles 23a and 24a. And a carrier 26a having a load frame 25a having both ends connected to a lower portion. Hereinafter, these will be described in detail.
[0038]
Each of the front and rear traveling carts 23a and 24a is an example of a guide roller, and the two traveling rollers 18a and 19a receiving vertical load and the four upper vertical guides for guiding traveling by preventing the carrier 26a from falling down. A guide roller 20a, four lower vertical guide rollers 21a, and two horizontal guide rollers 22b and 22c are mounted.
The mounting brackets 77 respectively provided at the lower center positions in the traveling direction of the bogie frames 43b and 43c of the front and rear traveling bogies 23a and 24a are formed in a concave shape when viewed from the front, and are capable of suspending and transporting the transport target. Both ends of the load base 25a are connected via bolts 78. In addition, a hanging bracket (not shown) for suspending an object to be conveyed is provided on the load gantry 25a.
[0039]
Each of the front and rear traveling carts 23a and 24a is provided with two driven rollers 54a and 55a, respectively, which press and contact the divided rotary shaft 17b, similarly to the mechanical transport device 10, and the driven rollers 54a and 55a are The second link mechanisms 56b and 56c move between the time of traveling (see FIG. 7A) and the time of stopping (see FIG. 7B). The turning arm 62b of the front traveling vehicle 23a and the turning arm 62c of the rear traveling vehicle 24a are connected to a turnbuckle-type connecting member 65a constituting a first link mechanism 65c. The tilting of the driven rollers 54a and 55a is mechanically synchronized by the operation of the carrier stop member 63a provided at the left end of the roller.
[0040]
As shown in FIGS. 11 and 12A, the rail hanging member 76a surrounds a horizontal hanging member 75 made of a rectangular pipe and is screwed to the detachable main body portion 79 and the main body portion 79 by flange fitting. And a detaching section 80. At the lower end of the plate-shaped main body 79, a driving means 33a for rotating the divided rotary shaft 17b is provided. The driving means 33a includes an electric motor 36a with a speed reducer which is flange-connected to the main body 79, and a speed reducer. A chain sprocket 37a fixed to the output shaft of the electric motor 36a, a chain sprocket 34a provided at the front end of the divided rotary shaft 17b and paired with the chain sprocket 37a, and wound around the chain sprockets 37a and 34a. , An endless chain 38a that can be inserted through a through hole formed in the web of the I-beam 15b.
[0041]
As shown in FIG. 11 and FIG. 12 (B), the rail suspending member 76c surrounds the periphery of the horizontal suspending member 75 formed of a square pipe and is screwed to the detachable main body portion 79a and the main body portion 79a by flange fitting. And a detaching section 80a.
As shown in FIGS. 11A and 11B, the divided rotation shaft 17b slightly shorter than the length P is rotatable by a total of ten support brackets 81 along the length direction of the divided rotation shaft 17b. Supported. In addition, the method and operation of transporting the transported object using the mechanical transport device 10a are substantially the same as those of the mechanical transport device 10, and a description thereof will be omitted. Reference numeral 72a indicates a guide roller.
[0042]
The present invention is not limited to the above-described embodiments, and changes can be made without departing from the spirit of the present invention. For example, some or all of the above-described embodiments and modifications are described. The case where the mechanical transfer device of the present invention is configured in combination is also included in the scope of the present invention.
In the present embodiment, the angle α formed by the tangent s of the rotating shaft 17 and the ridgeline n of the driven rollers 54 and 55 is defined as the transport angle α ₁ = 45 ° and stop angle α ₀ = 90 °, but is not limited to this, and if necessary, the transport angle α ₁ Is greater than 0 ° and less than 90 °, and the stop angle α ₀ Can be set to 90 °. However, the transfer angle α ₁ = 45 °, the transport efficiency, that is, the power transmission efficiency is the largest.
[0043]
Synchronization of the two driven rollers 54 (55) of the front traveling vehicle 23 (the same applies to the rear traveling vehicle 24) was performed via the second link mechanism 56 (56a), but is not limited thereto. May be synchronized by another method.
Further, a first link mechanism 65b having a turnbuckle-type connecting member 65 is provided on the front and rear traveling carts 23 and 24, and two sets of second link mechanisms 56 and 56a are provided by the first link mechanism 65b. Are driven in synchronization with each other, but the present invention is not limited to this, and synchronization can be performed by another means if necessary.
[0044]
In the second link mechanism 56, the driven rollers 54 and 55 are brought into contact with a stopper plate 73 provided on another carrier 26 to stop the driven roller 54, 55 at the stop angle α. ₀ The carrier stop member 63 is provided on the rotating arm 62 in order to hold the stopper roller 73, but the present invention is not limited to this. Depending on the situation, the stopper plate 73 and the carrier stop member 63 are not provided, and the driven roller 54 is provided by another means. 55 at the stop angle α ₀ Can also be held.
Although the stopper plate 73 is provided on another carrier 26, the present invention is not limited to this. If necessary, a stopper plate is separately provided on a fixed base, and the carrier is forcibly moved by moving the stopper plate in a direction perpendicular to the traveling direction. 26 can also be stopped.
[0045]
Although two driven rollers 54 and 55 are provided for each of the front and rear traveling carts 23 and 24, the present invention is not limited to this, and one or three or more driven rollers may be provided as necessary.
The rotating shaft 17 is divided into a plurality of divided rotating shafts 17a, and each of the divided rotating shafts 17a is driven by an individual driving unit 33. However, the present invention is not limited to this. The shaft can be driven by one drive means. Further, the adjacent divided rotary shafts 17a can be provided detachably, and the required number of divided rotary shafts 17a can be driven by one driving unit.
Although the electric motor 36 with a speed reducer and the endless chain 38 are used as the driving means 33, the present invention is not limited to this, and other driving means can be used if necessary.
[0046]
Although the I-beam 15 is used as the rail, the present invention is not limited to this, and a rail having another cross-sectional shape can be used as needed. In this case, the position, the number, and the like of the guide rollers attached to the carrier can be appropriately determined according to the cross-sectional shape of the rail to be used.
In the mechanical transfer device 10, the rail mount 14 is provided on the floor 11 via the base member 12 so that the installation level of the I-beam 15 can be adjusted. However, the present invention is not limited to this. If the installation accuracy of the I-beam is not a problem, the rail mount can be provided directly on the floor surface 11.
[0047]
【The invention's effect】
In the mechanical transport device according to claim 1, a pair of front and rear traveling carts that are pressed against and contact the outer peripheral surface of the rotating shaft that is driven to rotate and that are provided at intervals along the rail. The carrier can be moved and stopped by controlling the angle between the tangent line of the driven roller and the ridgeline of the rotating shaft provided in each of the above, so there is no need to provide an electric motor on the carrier. There is no need to provide a power supply line and a current collector trolley on the carrier. This simplifies the structure, facilitates maintenance, eliminates dust and dust, and improves the working environment. Further, both the floor type and the overhead type can be used, and the versatility is improved. Furthermore, there is almost no effect of rail installation accuracy. In particular, control is extremely simple because control is mechanical rather than electrical.
[0048]
In particular, in the mechanical transfer device according to the second aspect, since the driven rollers of the pair of front and rear traveling carts are synchronized via the first link mechanism, the synchronization structure is simplified, thereby In addition, the carrier becomes compact and the traveling performance is stable.
In the mechanical transport device according to the third aspect, the driven roller can be turned through the paired second link mechanism by driving the first link mechanism. A drive source is not required, and as a result, the carrier is more compact and the traveling performance is more stable.
In the mechanical transport device according to the fourth aspect, the carrier stop member provided on the first link mechanism is rotated by contacting the carrier with another carrier or an inclined portion of a stopper plate provided at a predetermined position. Since the carrier can be stopped irrespective of the rotation of the shaft, the control is simplified as compared with the conventional low speed stop performed by electric control.
[0049]
In the mechanical transport device according to the fifth aspect, since the transport object is transported by being suspended from the carrier, it is not necessary to provide the transport device on the floor, so that a space can be secured on the floor.
In the mechanical transport device according to claim 6, since the transport target is transported along the rail fixed on the floor via the rail mounting member, the handling of the transport target to the carrier is facilitated. The performance is improved.
[Brief description of the drawings]
FIGS. 1A and 1B are a plan view and a front view, respectively, of a mechanical transport device according to an embodiment of the present invention used for placing and transporting automobile parts.
FIG. 2 is a side sectional view of the mechanical transport device.
FIG. 3 is a plan sectional view of a carrier of the mechanical transport device.
FIG. 4 is a front sectional view of a carrier of the mechanical transport device.
FIG. 5 is a plan view showing a relationship between a front traveling trolley of a carrier and a driven roller of the mechanical transport device.
FIG. 6 is a plan view showing a relationship between a rear traveling cart of a carrier of the mechanical transport device and a driven roller.
FIGS. 7A and 7B are explanatory diagrams of a turning mechanism of a driven roller when the carrier of the mechanical transport device is transported and stopped by first and second link mechanisms, respectively.
FIG. 8 is an enlarged front sectional view of a front traveling cart and a driven roller of a carrier of the mechanical transport device.
FIG. 9 is an enlarged front sectional view of a rear traveling cart and a driven roller of the carrier of the mechanical transport device.
FIG. 10 is an enlarged plan sectional view of front and rear traveling carts of the carrier of the mechanical transport device.
FIGS. 11A and 11B are a plan view and a front view, respectively, of a mechanical transfer device according to another embodiment of the present invention used for suspending and transferring an object to be transferred.
12A and 12B are a sectional view taken along line AA and a sectional view taken along line BB of FIG. 11B, respectively.
FIGS. 13A and 13B are a plan sectional view and a front sectional view, respectively, of a carrier of a mechanical transport device according to another embodiment of the present invention used for suspending and transporting an object to be transported.
FIG. 14 is a simplified side sectional view of an overhead-type transfer device according to a conventional example.
FIG. 15 is a simplified side sectional view of a floor-type transfer device according to a conventional example.
[Explanation of symbols]
10, 10a: mechanical transfer device, 11: floor surface, 12: base member, 12a: upper surface, 13: jack bolt, 14: rail mount (rail mounting member), 14a: lower surface, 15: I beam (rail), 15a: I beam alone, 15b: I beam (rail), 16, 16a: mounting bracket, 17: rotary shaft, 17a, 17b: split rotary shaft, 18, 18a: running roller (guide roller), 19, 19a: running Rollers (guide rollers), 20, 20a: upper vertical guide rollers (guide rollers), 21, 21a: lower vertical guide rollers (guide rollers), 22, 22a to 22c: horizontal guide rollers (guide rollers), 23, 23a : Front traveling vehicle, 24, 24a: rear traveling vehicle, 25, 25a: load frame, 26, 26a: carrier, 7: White body (object to be conveyed), 28: Anchor bolt, 29: Nut, 30: Flange plate, 31: Curved plate, 32: Flange plate, 33, 33a: Drive means, 34, 34a: Chain sprocket, 35: Mounting plate, 36, 36a: electric motor with reduction gear, 37, 37a: chain sprocket, 38, 38a: endless chain, 39, 39a: front plate, 40, 40a: rear plate, 41, 41a: upper connecting plate, 42 : Main connecting member, 43, 43a to 43c: bogie frame, 44, 44a: mounting bracket, 45, 45a: mounting bracket, 46, 46a: mounting bracket, 47, 47a: mounting bracket, 48: fixed shaft, 49: bearing , 50: fixed shaft, 51: bearing, 52, 52a: fixed shaft, 53: outer peripheral surface, 54, 54a: driven roller 55, 55a: driven roller, 56, 56a to 56c: second link mechanism, 57: turning arm, 57a: urging means, 58: turning arm, 58a: urging means, 59: parallel arm, 60: slide piece , 60a: slide hole, 61: fixed shaft, 62, 62a to 62c: rotating arm, 63, 63a: carrier stop member, 64, 64a: pin, 65, 65a: turnbuckle type connecting member, 65b, 65c: No. No. 1 link mechanism, 66: rotating shaft, 67: frame for driven roller, 68: fixed shaft, 69: bearing, 70: coil spring, 71: mounting plate, 72, 72a: guide roller, 73: stopper plate, 74: Inclined part, 75: horizontal hanging member, 76a to 76c: rail hanging bracket (rail mounting member), 77: mounting bracket, 78: bolt, 79, 79a: book Body part, 80, 80a: detachable part, 81: support bracket

Claims (6)

A rail supported via a rail mounting member,
A rotating shaft having a circular cross section that is provided in parallel along the rail via the rail, and is driven to rotate;
A plurality of guide rollers for rolling the rails are respectively attached, and a pair of front and rear traveling vehicles provided at intervals along the rails, and a load connecting the pair of front and rear traveling vehicles. A carrier having a platform,
A driven roller provided on each of the pair of front and rear traveling carts and pressed against the outer peripheral surface of the rotating shaft,
Each of the driven rollers rotates in synchronization with each other, and at a point where the driven roller comes into contact with the rotation axis, an angle between a tangent line of the driven roller and a ridge line of the rotation axis is smaller than a stop angle in a 90-degree state and 90 degrees. A mechanical transport device, wherein the carrier is moved and stopped by controlling the carrier angle. The mechanical transport device according to claim 1, wherein synchronization of the driven rollers of the pair of front and rear traveling vehicles is performed via a first link mechanism. 3. The mechanical transport device according to claim 2, wherein the front and rear traveling carts include the driven rollers that are turned in pairs by a second link mechanism, and wherein the second link mechanism includes the first link mechanism. A mechanical transfer device driven by the link mechanism of (1). 4. The mechanical transport device according to claim 2, wherein the first link mechanism contacts another carrier or an inclined portion of a stopper plate provided at a predetermined position, and A mechanical transport device comprising a carrier stop member for smoothly holding a driven roller at the stop angle. 5. The mechanical transport device according to claim 1, wherein the rail is fixed to a building via the rail mounting member having a C-shaped cross section, and transports an object to be transported by suspending the transport object from the carrier. 6. A mechanical transfer device. 5. The mechanical transport device according to claim 1, wherein the rail is fixed on a floor via the rail mounting member, and transports the transport target by placing the transport target on the carrier. 6. A mechanical transfer device characterized by the above.

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