JP4244634B2 - Transport device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to the technology of a transfer apparatus, and more specifically, for example, the transfer of an object to be processed to a processing tank and the raising / lowering operation into the processing tank, such as an electrolytic coating process or a pretreatment of an automobile body in an automobile production factory. The present invention relates to a structure of a transfer device having a function capable of performing a swing operation in a processing tank safely and in a short time.
[0002]
[Prior art]
As for the device that conveys and lifts the object to be processed in the processing tank, such as the electrolytic coating treatment of the automobile body in the automobile production factory or its pretreatment, the lifting device incorporated in the carrier of the power and free trolley conveyor The front and rear ends of the support frame on which the object to be processed (object to be processed) is respectively connected to the terminals of a pair of front and rear suspension ropes hanging from the lifting device, and the object to be transported on the processing tank by the trolley conveyor There is known a transfer device that is moved up and down by operating the elevating device together with a support frame into the processing tank, or swinging back and forth while immersed in a processing solution in the processing tank (for example, patents) Reference 1). The suspension rope in this transport device uses a flexible material such as a chain, so the transported object stays in the transported object when it is transported, lifted or lowered, or swung in the processing liquid. The support frame may be inadvertently shaken due to the buoyancy of the air, and the support frame may come into contact with or collide with the side wall of the processing tank, thereby damaging the wall surface or the support frame. In order to avoid this, depending on the size and shape of the conveyed product (object to be processed), the operation speed such as conveyance and elevation may be slowed down and operated slowly, but the process takes a long time. There is a problem.
[0003]
[Patent Document 1]
JP 2000-6792 A (pages 2 to 3, FIGS. 1 to 6)
[0004]
[Problems to be solved by the invention]
In view of the above-mentioned situation, the present invention intends to solve the problem of transporting an object to be processed and raising / lowering it into a processing tank, such as movement between each work process of an automobile body in an automobile production factory and electrolytic coating treatment or its pre- and post-treatment. When performing the operation and swinging operation in the processing tank, the inertial force, buoyancy, and resistance of the processing liquid that act on the processing target are prevented from inadvertently moving the processing target. The object of the present invention is to provide a transport apparatus having a function capable of performing a series of operations such as immersion and pulling up and swinging in a processing solution safely and quickly in a short time.
[0005]
[Means for Solving the Problems]
  In order to solve the above-described problems, in the present invention, the transport device can travel along the travel rail by the travel rail and a guide rail installed in parallel to the travel rail.A horizontal base that is supported and provided with wheels on the front and rear, and a columnar portion having a horizontal section that is vertically erected upward from the vicinity of the front and rear ends of the base, each having a triangular, quadrangular, polygonal, circular, or elliptical shape. And a reinforcing member that connects the upper portions of the two columnar portions to form a traveling frame, and a guide sliding piece or roller that comes into contact with the guide rail is provided.Each of the columnar portions individually supports a lifting member provided with a lifting drive device while being vertically movable, and a pair of horizontal support portions provided integrally or detachably with the vertical member at the lower end of the vertical member. A substantially L-shaped support member is pivotally fixed to the elevating member so that the lower end support portion can be swung in the same horizontal direction perpendicular to the traveling direction and limited in the front-rear direction. At the lower end support part of the member, a transport support base that straddles both support parts is rotatably supported so that it can tilt in the longitudinal direction of travel.The elevating member includes a frame member that surrounds the columnar portion with an appropriate gap therebetween, and a plurality of frame members that are disposed above and below the frame member and that are in contact with the columnar portion and support the frame member so as to be vertically movable. It has a sliding piece or roller, a support member pivot stop that pivots the upper end of the support member so that it can swing back and forth, and a stopper that restricts the swing of the support member back and forth.
[0006]
With the above configuration, the support member supporting the transported object can be prevented from swinging in the left-right direction perpendicular to the traveling direction of the traveling frame, and limited to restricting forward / backward swinging due to changes in traveling speed and inertial force, such as starting and stopping traveling. In addition, it is possible to safely move up and down against the buoyancy acting on the object to be processed when performing the raising and lowering operation into the processing tank and the swinging operation in the processing tank, and inadvertently accompanying the resistance of the processing liquid Therefore, a series of operations can be performed safely and quickly in a short time.
[0008]
The lifting / lowering drive device for the lifting / lowering member is a pair of pulleys installed in the vicinity of the upper and lower ends of each columnar portion, as the lifting / lowering driving device for the lifting / lowering member supported by the pair of columnar portions on the front and rear of the traveling frame. A sprocket, a rope or chain wrapped around both pulleys or both sprockets and locked at both ends thereof to the elevating member, and in contact with the rope or chain in the middle of either the upper or lower pulley or sprocket or the rope or chain It is advantageous to use an endless drive mechanism constituted by a drive motor connected to either a third pulley or a sprocket. Alternatively, the elevating drive device includes a screw rod that is installed in parallel with each of the columnar portions and supports the end portion rotatably, and a nut member that is screwed into the screw rod and connected to the elevating member. The screw rod rotation drive device may be provided, and the nut member may be moved up and down by the rotating action of the screw rod.
[0009]
In any of the above cases, traveling wheels are provided in the vicinity of the lower front and rear ends of the traveling frame, and at least one of the front and rear wheels is provided with at least one motor-driven driving wheel so as to be self-propelled. Therefore, it can be independently driven independently of the pulling chain that is moved all at once, and the timing of the transfer movement can be individually controlled, so that the work process can be individually adjusted.
[0010]
In this specification, the forward traveling side is defined as the front, front, front side, and the opposite side is the rear, rear, and rear side along the traveling rail of the traveling frame, and the forward traveling direction is perpendicular to the traveling rail. The left side is the left, left, left side, and the opposite side is the right, right, right side.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the present invention is not limited to the embodiments shown in the accompanying drawings, and includes all the embodiments that satisfy the requirements described in the claims. It is a waste. FIG. 1 is a perspective view showing an embodiment of a transport apparatus according to the present invention, in which a transported article is lowered into a processing tank and its rear part is sunk downward. FIG. 2 shows a state viewed from the right side with respect to the traveling direction in a state in which the conveyed product in FIG. 1 is kept horizontal, and a two-dot chain line diagram shows a state where the conveyed product is lowered to the treatment tank. FIG. 3 also shows a state seen from the rear in the traveling direction, and a two-dot chain line shows a state in which the conveyed product is raised. 4 shows a state when viewed from the right in FIG. 1, and FIG. 5 shows a state where the levels of the front and rear lifting devices in FIG. 4 are changed.
[0012]
In an automobile production line or the like, for example, a plurality of treatment tanks 54 or shower-type treatment facilities that perform an electrolytic coating process or a treatment before and after the opening is formed in the floor 50 and below the opening are connected to the tank wall. Has been placed. Next to that, a transport facility for transporting the transported object 60 (the body of the car in the case of the attached figure), for example, a traveling rail 51 laid on the floor 50 along the transport path directly or via an appropriate frame, A guide rail 53 installed in parallel to the traveling rail 51 and a transport device (for example, reference numeral 1 or 1a in the attached drawings) movable on the traveling rail 51 are installed on a frame or ceiling 52 provided above.
[0013]
In the figure, a conveying device 1 according to the present invention includes a base 3 provided with motor-driven drive wheels 7 and 7 in the vicinity of front and rear ends and capable of self-propelling on a traveling rail 51, and from the vicinity of the front and rear ends of the base 3. Vertical pillars 4 and 4 erected upward, a horizontal reinforcing member 5 connecting the upper ends of the pillars 4 and 4 to each other, and a support bracket 11 projecting laterally in the vicinity of the front and rear ends of the reinforcing member 5. , 11 and the guide frame 10, 10 provided on the support bracket 11 and in contact with the lower surface and both side surfaces of the guide rail 53, while the pillars 4, 4 can be raised and lowered along the same. Elevating members 15, 15 are provided, and elevating drive devices 35, 35 capable of elevating the elevating members 15, 15 individually or simultaneously are provided, respectively. A pair of substantially L-shaped support members 25 and 25 having a horizontal support portion 27 extending leftward in the row direction, that is, toward the conveyance path side, are limited to the front and rear (that is, in the traveling direction). The upper end of the vertical portion 26 is pivotally supported by each of the elevating members 15 so as to be swingable, and the transported object support base 30 straddling the support portions 27, 27 of the support members 25, 25 is rotatably supported so as to be tiltable forward and backward. To do.
[0014]
When the elevating members 15 and 15 are not located at the same level, that is, when the front and rear support members 25 and 25 are at different levels, the transport device 1 is mounted across the lower end support portions 27 and 27 of the support members 25 and 25. The supported support 30 is tilted back and forth according to the level difference. Along with this inclination, the front support member 25 is pulled rearward and the rear support member 25 is pulled forward by the support base 30 and slightly pivots back and forth. Therefore, as a means for supporting the support members 25 and 25 so as to be able to swing back and forth within a limited angle range, the support members 25 and 25 at the time of the maximum tilt of the support base 30 necessary for tilting and swinging the conveyed product, that is, the object to be processed 60. The elevating members 15 and 15 are provided with stoppers 20 and 20 that are in contact with the side surfaces of the support member 25 for allowing a forward / backward rotation angle of the support member 25 and restricting further rotation and swinging.
[0015]
Next, the detailed structure of the details of the transport apparatus 1 will be sequentially described below. First, for the traveling frame 2, the pillars 4, 4 erected from the upper part of the base 3 are made of a square pipe material having a horizontal cross section, and the lower end thereof is fixed to the base 3 by welding or bolts. The interval between the columns 4 and 4 is such that the object to be processed (the body of the passenger car in the figure) 60 is stably supported by the supporting members 25 and 25 vertically suspended from the elevating members 15 and 15, and the conveying, elevating and processing tanks 54 are provided. Set an appropriate interval so that the operation of tilting back and forth in the inside can be performed without hindrance. Before and after the base 3 of the travel frame 2, there are travel devices 6 each having drive wheels 7 each having a configuration in which a travel drive motor 9 is connected to a shaft of the travel wheel via a speed reducer. , 7 allows the traveling frame 2 to be self-propelled on the traveling rail 51.
[0016]
The traveling device 6 is attached to the front and rear of the base 3 via a vertical support shaft 6a so as to be convertible in the left-right direction, and the drive wheels 7 follow the traveling rail 51 without being derailed even when the track of the traveling rail 51 is curved. It is configured to run. The driving wheel 7 may be either one of the front and rear wheels as a driving wheel and the other as a driven wheel, or the driving wheel 7 may be a wheel that does not have a traveling motor or a sliding piece that slides on the traveling rail 51. Instead, the traveling frame may be connected to a chain or rope laid along the vicinity of the traveling rail 51, and the traveling frame 2 may be moved by pulling the chain or rope with another driving device.
[0017]
Guide portions 10, 10 provided before and after the reinforcing member 5 at the upper part of the travel frame 2 are rotatable to the support brackets 11, 11 projecting from the vicinity of the front and rear ends of the reinforcing member 5 toward the guide rail 53, and to the respective support brackets 11. It has a pair of opposed horizontal rollers 13, 13 and one vertical roller 12 attached. The horizontal rollers 13 and 13 are brought into contact with the left and right side surfaces of the guide rail 53, and the vertical roller 12 is brought into contact with the lower surface of the guide rail 53. As a result, the support frame 2 is restrained from falling to the right and left, and cooperates with the drive wheels 7 to support the travel frame 2 so as to be movable in the direction of the travel rail 51 and the guide rail 53.
[0018]
The guide portion 10 is provided with a horizontal overhanging portion on the opposite side of the guide rail 53, and a plurality of power feeding elements 56 are attached to the overhanging portion. A power supply line 57 that is in contact with the power supply element 56 is installed on the ceiling 52 that receives power from the power supply line 57 via the power supply element 56, and is installed on the traveling frame 2 via a cable (not shown). Supply power to the control panel. Further, an appropriate position sensor (not shown) such as an encoder is provided at an appropriate location such as the drive wheel 7 of the travel frame 2 to detect the travel position, and the transport device 1 travels at each processing step position of the transported object 60. Stop. In other words, the position sensor is a means for detecting the position of the traveling frame such as a position where the traveling operation is shifted to the raising / lowering operation and the forward / backward swing operation.
[0019]
When the guide rail 53 is installed at a low position in the vicinity of the floor 50, for example, instead of the ceiling 52, the guide portion 10 is provided at a low position accordingly. Then, the horizontal roller 13 and the vertical roller 12 for preventing the falling and the rising may be arranged in an appropriate posture and positional relationship according to the shape of the guide rail. Moreover, you may replace the horizontal roller 13 and the vertical roller 12 with the sliding piece which contact | connects a guide rail. Or although illustration is abbreviate | omitted, about the guide rail, the form using a suitable vertical part and horizontal parts, such as a frame member which fixes and supports the traveling rail 51, as a member which bears the function of a guide rail may be sufficient.
[0020]
Next, the elevating member 15 will be described. The elevating member 15 is attached to the column 4 so as to be vertically rotatable on the top and bottom of the frame member 16 and the frame member 16 surrounding the three sides on the conveyance path side (support member 25 attachment side) with an appropriate gap therebetween. A plurality of rollers 19 that are opposed to each other across the column 4 and that are in contact with the column 4 and support the frame member 16 so as to be vertically movable, a support shaft mounting portion 17 that is formed to project on the side wall on the support member 25 side, The support shaft 18 is fixed to the support shaft mounting portion 17 and is pivotally supported by the support member 25 so that the upper end of the support member 25 can swing back and forth. The support shaft 25 is in contact with the side of the support member 25 supported by the support shaft 18. A stopper 20 fixed to the support shaft mounting portion 17 is provided for restricting forward and backward swinging. The stopper 20 is a position where the support base 30 is in contact with the inner side surfaces of the support members 25, 25 in a state where the support base 30 is inclined to the maximum, or a position where the support base 30 is in contact with the outer side surfaces of the support members 25, 25 in the horizontal state. It is provided in either. The roller 19 can be replaced with a sliding piece that slides in contact with the pillar 4 although not shown. Besides, the pillar 4 may be formed in any shape of a triangle, a polygon, a circle, and an ellipse in addition to the square pipe having a rectangular horizontal cross section. The shape of the inner peripheral portion of the member 16 is set to a shape that matches the column.
[0021]
Next, the elevating drive device 35 will be described. The elevating drive device 35 has sprockets 36 and 36a rotatably installed near the upper and lower ends of the pillars 4 and 4 of the traveling frame 2, and a chain 37 is wound around both the sprockets 36 and 36a and both ends of the chain. Are respectively engaged with engaging portions 38 and 38a formed on the upper and lower sides of the elevating member 15 to constitute an endless elevating towing mechanism, and the lower sprocket 36a is elevating drive installed on the base 3 of the traveling frame 2. The motor 39 is connected to the output shaft.
[0022]
The chain 37 may be provided with appropriate tensioning means such as a spring-type or screw-type tensioning device (not shown) at the locking portion. As a means for driving the chain 37, although not shown, instead of driving the lower sprocket 36a, a third sprocket that meshes with the chain 37 is arranged in the middle of the path of the chain 37, and the third sprocket is moved up and down. It is good also as a structure which connected with a drive motor and wound the chain 37 via this 3rd sprocket. In any of the above cases, the chain and sprocket may be replaced with a wire rope and a pulley.
[0023]
Next, the support member 25 will be described. The support member 25 has a long vertical portion 26 having a shaft hole pivotally supported by the support shaft 18 of the elevating member 15 at the upper end, and bends and extends from the lower end of the vertical portion 26 toward the above-described conveyance object conveyance path side. The support part 27 is formed of a substantially L-shaped member having a horizontal support part 27 that protrudes, and the support part 27 has a circular vertical cross section perpendicular to the longitudinal direction of the support part. In addition, the horizontal support portion 27 that bends and extends to the conveyance path side is integrally formed with the vertical portion 26 as described above, and, like the other support member 25a illustrated in FIG. The support part 27a may be divided and formed, and the support part 27a may be detachably attached to the lower end of the vertical part 26a. With such a structure that can be divided, a plurality of different support portions 27a that match the size and shape of various conveyed items are prepared, and they are appropriately replaced according to the type of conveyed item, or paint is attached or worn out. Convenient for maintenance work.
[0024]
Next, the support base 30 will be described. A support base 30 straddling both the support portions 27 and 27 is rotatably supported by the support portions 27 and 27 at the lower ends of the pair of support members 25 and 25 so as to be inclined forward and backward. The structure of the rotation support portion 29 with the support portion 27 of the support base 30 is formed by fixing annular members that fit loosely with respect to the support portion 27 having a circular cross section around the lower surface of the support base 30. With this structure, when the elevating member 15 is moved up and down at the same level at the same level, the support base 30 is kept horizontal, and when only one of the front and rear is raised or lowered in the opposite direction, the support stage 30 is moved back and forth. It is possible to incline.
[0025]
Although illustration is omitted, the support base 30 is provided with appropriate fixing means for fixing the conveyed product. This fixing means is formed in an appropriate shape according to the shape of the transported object, but in addition to making the support base itself a support base equipped with a dedicated fixing means according to the transported object, other types of transported objects on the same support base There are other appropriate methods such as providing an adapter for fixing and supporting the conveyed product on the support base, or forming a large number of holes for fixing bolts on the support base. Alternatively, as described above, it is also possible to form the support portion 27 itself at the lower end of the support member 25 on a support base that matches the conveyed product, and attach this to the lower end of the vertical member 26 so as to be able to tilt forward and backward. Note that the support base 30 is not limited to a rectangular frame shape as shown in the figure. For example, a mesh member, a plate member, a rod member, or a mesh member is used depending on the type and shape of the conveyed product or the work content of the processing step. An appropriate form such as these can be selectively adopted.
[0026]
Next, the operation and operation of the lifting device having the above configuration will be described. The transport device 1 according to the present invention is installed in an appropriate process of a production line such as an automobile, and the traveling rail 51 and the guide rail 53 are continuously parallel from the start point to the end point of the transport path for transporting the transported object 60. And the traveling frame 2 travels along that. The support member 25 of the transport apparatus 1 is lowered to the floor surface or an appropriate height at the start point of the transport path, the transport object is supported and fixed on the support base 30, and the lift drive device 35 is operated to bring the transport object 60 to an appropriate level. Lift horizontally to move. Then, for example, when it reaches the top of the treatment tank 54 in the electrolytic coating treatment process or its pre- and post-treatment processes, the aforementioned position sensor (not shown) is activated, the traveling device 6 is stopped, and the elevating drive device 35 is activated and supported. The member 15 is lowered and the conveyed product is immersed in the processing liquid in the processing tank 54. When air stays inside due to the shape of the transported object, the transporting object 60 is swung back and forth by changing the ascending / descending speed of the front and rear elevating drive devices 35 and 35 or by tilting the support base 30 back and forth by individual operations. . The upper end of the support member 25 is pivoted even when the inertial force at the time of transport or the resistance or buoyancy of the processing liquid acting during the lifting operation to the processing tank or the swinging operation in the processing liquid acts on the transported object. The supporting shaft 18 restrains other than the swinging around the supporting shaft, and the stopper 20 provided in the vicinity of the supporting shaft 18 of the elevating member 15 restricts the swinging of the support member 25 back and forth. Therefore, the shake of the processed material 60 is restricted to a very small range. That is, it is possible to avoid collision with the wall around the transfer path, the equipment, the side wall 55 of the processing tank 54, etc., and a series of operations such as transfer, raising and lowering into the processing tank 54 and swinging in the processing tank can be performed safely and quickly. It can be done in a short time. And after a process process is complete | finished, the raising / lowering drive device 35 is operated, the processed material 60 is pulled up from a processing tank, the traveling apparatus 6 is operated, and a processed material is conveyed to the following processing tank.
[0027]
Next, FIG. 6 shows a partial view of another embodiment of the lifting device and the support member of the transport device according to the present invention as seen from the front in the traveling direction. This figure is an enlarged partial view of only a lifting drive device 35a that drives the lifting member 15a attached to the column 4 so as to be liftable. The lifting / lowering drive device 35a of the transport device 1a shown in this figure includes a screw rod 40 installed along each column 4 in parallel with each of the pair of front and rear columns 4, 4 of the traveling frame 2. . Each screw rod 40 rotatably supports an upper end portion via a bearing 41 with respect to a support bracket 11 projecting laterally from the reinforcing member 5 at the upper end of each traveling frame 2, and the lower end thereof is a base of the traveling frame 1. 3 is connected to and supported by a screw rod rotation drive device 44 installed in the machine 3. The threaded rod 40 is formed with a threaded portion 42 over substantially the entire length, and the threaded portion 42 is fitted with a nut member 43 that is screwed thereto. The nut member 43 is connected to an elevating member 15a supported so as to be able to move up and down along the pillar 4, and when the screw rod 40 is rotated by the screw rod rotation driving device 44, the nut member 43 moves up and down, thereby the elevating member 15a. Is configured to move up and down.
[0028]
Instead of the method of supporting the screw rod 40 by the screw rod rotation drive device 44 installed at the upper end on the support bracket 11 and at the lower end on the base 3, one end can be rotated on the column 4 or the lower end on the base 3 respectively. On the other hand, the screw rod rotation driving device 44 may be connected to the upper end portion of the screw rod 40 or may be connected via a gear mechanism or a chain mechanism.
[0029]
In the transport device 1a, the pillars 4 and 4 and the lift members 15a and 15a of the lift drive device 35a have the same structure as the pillars 4 and 4 and the lift members 15 and 15 of the transport device 1, but the lift member 15a. Has a connecting member (not shown) connected to the nut member 43a on the side surface of the frame member 16a on the screw rod 40 side, and does not include the chain locking portions 38, 38a in the above-described embodiment. The support member 25a is formed by dividing a vertical portion 26a and a support portion 27a horizontally extending from the lower end thereof, and attaching the base end of the support portion 27a to the lower end of the vertical portion 26a so as to be detachable. is doing. The transport apparatus 1a has the same structure as the above-described transport apparatus 1 except for the lifting device 35a and the support member 25a, and has the same function as described above. Further, the support member 25 a can be replaced with the support member 25 of the above-described transport device 1.
[0030]
In addition, as a raising / lowering drive mechanism of a raising / lowering member, the endless traction mechanism comprised by the rope or chain demonstrated above and the drive device which drives it, a screw rod, and the nut member and screw rod which screw together with this A mechanism constituted by a rotary drive device is optimal, but various other mechanisms may be used. Although illustration is omitted, for example, a hydraulic or pneumatically operated cylinder device is used, and one end thereof is connected to the traveling frame side, and the other end is connected to the lifting member side supported by the vertical columnar portion of the traveling frame so as to be movable up and down. A mechanism for raising and lowering the elevating member by expansion and contraction of the cylinder, a mechanism for attaching a rack vertically along the columnar portion, attaching a pinion that meshes with the rack to the elevating member, and for raising and lowering the pinion by rotating it with a motor, etc. Various mechanisms including those not listed here can be selectively employed.
[0031]
【The invention's effect】
The transport device according to the first aspect of the present invention is supported so as to be able to travel along the traveling rail by the traveling rail and the guide rail laid in parallel to the traveling rail, and 1 near the front and rear ends in the traveling direction. A traveling frame having a pair of vertical columnar portions is formed, and each columnar portion of the traveling frame individually supports an elevating member provided with an elevating drive device so as to be movable up and down, and the vertical member and A pair of substantially L-shaped support members having a horizontal support portion provided so as to be integrated or detachable are limitedly swung in the same horizontal direction orthogonal to the travel direction and limited in the front-rear direction. The upper end of the support member is pivotally supported by the elevating member, and the lower end support portion of the support member is configured by rotating and supporting a carrier support table that straddles both support portions so as to be able to tilt in the front-rear direction. Conveyed during frame travel The swinging motion in the processing tank and the lifting and lowering operation to the treatment tank for performing electrolytic coating treatment and its front-back treatment are limited. There is an effect that the buoyancy acting on the object to be processed when performing the operation and the inadvertent shaking associated with the resistance of the processing liquid are limited, and a series of operations can be performed safely and quickly in a short time. In addition, by making the horizontal support part at the lower end of the support member detachable, it is possible to replace the support part according to the shape and size of the transported object, and for paints and the like adhered by electrolytic coating processing, etc. There is an effect that maintenance work such as peeling and removing work can be easily performed.
[0032]
【The invention's effect】
  The transport device according to the first aspect of the present invention is configured to be able to travel along the travel rail by the travel rail and the guide rail laid in parallel to the travel rail.A horizontal base that is supported and provided with wheels on the front and rear, and a columnar portion having a horizontal section that is vertically erected upward from the vicinity of the front and rear ends of the base, each having a triangular, quadrangular, polygonal, circular, or elliptical shape. And a reinforcing member that connects the upper portions of the two columnar portions to form a traveling frame, and a guide sliding piece or roller that comes into contact with the guide rail is provided.Each of the columnar portions individually supports a lifting member provided with a lifting drive device while being vertically movable, and a pair of horizontal support portions provided integrally or detachably with the vertical member at the lower end of the vertical member. A substantially L-shaped support member is pivotally fixed to the elevating member so that the lower end support portion can be swung in the same horizontal direction perpendicular to the traveling direction and limited in the front-rear direction. At the lower end support part of the member, a transport support base that straddles both support parts is rotatably supported so that it can tilt in the longitudinal direction of travel.The elevating member includes a frame member that surrounds the columnar portion with an appropriate gap therebetween, and a plurality of frame members that are disposed above and below the frame member and that are in contact with the columnar portion and support the frame member so as to be vertically movable. It has a sliding piece or roller, a support member pivot stop that pivots the upper end of the support member so that it can swing back and forth, and a stopper that restricts forward and backward swing of the support member in a limited manner.Therefore, it is possible to prevent left and right shaking due to the inertial force acting on the transported object during traveling of the traveling frame, limit the back and forth shaking, and move up and down to the treatment tank for performing the electrolytic coating treatment and the front and rear treatment thereof. Limits inadvertent shaking caused by buoyancy acting on the workpiece and resistance of the processing liquid when swinging in the processing tank and operation, and a series of operations can be performed safely and quickly in a short time There is an effect that can be done. In addition, by making the horizontal support part at the lower end of the support member detachable, it is possible to replace the support part according to the shape and size of the transported object, and for paints and the like adhered by electrolytic coating processing, etc. There is an effect that maintenance work such as peeling and removing work can be easily performed.
  Moreover, it becomes a strong structure which can carry | lift a heavy article and raise / lower safely, the resistance of each movable part falls, it operates smoothly, and durability improves. Further, the support member that supports the conveyed product is firmly supported by the elevating member, and the front and rear support members are allowed to slightly tilt forward and backward during the forward / backward tilting operation of the conveyed product (object to be processed) and at that time The back and forth swing exceeding the tilt angle is reliably regulated by the stopper, and the workpiece is lifted and lowered with the buoyancy and resistance that the workpiece receives from the treatment liquid in the treatment bath during the raising and lowering operation of the workpiece and the swing operation in the treatment bath. There exists an effect, such as being able to support firmly the eccentric load which acts on a member.
[0034]
  Claim2The conveying device of the invention according to the present invention includes a pair of pulleys or sprockets installed in the vicinity of the upper and lower ends of the columnar portion of the lifting drive device for the lifting member, and the both ends of the pulleys or sprockets wound on the lifting members. A locked rope or chain and a drive motor connected to either the upper or lower pulley or sprocket or a third pulley or sprocket that contacts the rope or chain in the course of the rope or chain. Because of the endless drive mechanism, in addition to the weight of the workpiece, the support member, and the lifting device, both the buoyancy acting on the workpiece and the downward and push-up directions acting on the support member due to the resistance of the treatment liquid in the treatment tank A mechanism that can safely lift and lower the workpiece against the action force can be realized with a simple and inexpensive configuration. There is a kind of action effect.
[0035]
  Claim3The conveying device of the invention according to the present invention is configured such that a lifting drive device for a lifting member is screwed into a screw rod that is installed in parallel with each columnar portion of the traveling frame and rotatably supports an end portion thereof. Since the nut member connected to the elevating member and the rotation driving device for the screw rod are configured, the elevating operation is safely performed against the force in the push-up direction similarly to the above, There is an effect that the structure can be made even more compact, and there is no risk of a slip accident due to the occurrence of loosening or a breakage accident due to an impact action, and the reliability can be improved.
  Claim4The transport device according to the present invention is provided with traveling wheels in the vicinity of the lower front and rear ends of the traveling frame, and at least one of the front and rear wheels is provided with at least one motor-driven driving wheel so as to be able to travel on its own. Unlike the method of moving all at once by a tow chain or the like, it can be independently driven, the timing of transport movement can be individually controlled, and the work process can be individually adjusted.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an embodiment of a transfer device according to the present invention, as seen from an obliquely rearward state in which a transfer object is lowered into a processing tank and a rear side is sunk downward.
FIG. 2 is a view of the transfer device of FIG. 1 viewed from the right with respect to the traveling direction with the front and rear lifting members kept horizontal, and the two-dot chain line diagram shows a state in which the transfer object is lowered to the processing tank. It is.
FIG. 3 is a view of the conveyed product in FIG. 2 as viewed from the rear with respect to the traveling direction in a state where the conveyed product is lowered to the treatment tank, and a two-dot chain line is a state in which the conveyed product is raised.
4 is a view of the transfer device of FIG. 1 as viewed from the right with respect to a traveling direction.
FIG. 5 is a diagram showing a state in which the levels of the front and rear lifting devices in FIG. 4 are reversed.
FIG. 6 is a partial view showing another embodiment of the lifting device and the support member of the transport device according to the present invention as seen from the front in the running direction.
[Explanation of symbols]
1, 1a Transport device
2 Running frame
3 bases
4 pillars
5 Reinforcing members
6 Traveling devices
6a Vertical spindle
7 Drive wheels
9 Traveling drive motor
10 Guide support
11 Support bracket
12 Vertical roller
13 Horizontal roller
15, 15a Lifting member
16, 16a Frame member
17 Supporting shaft mounting part
18 Support shaft (support member pivot stop)
19 Roller
20 Stopper
25, 25a Support member
26, 26a Vertical part (vertical member)
27, 27a support part
29 Rotation support
30 Support stand
35, 35a Elevating drive device
36, 36a Sprocket
37 chain
38,38a Locking part
39 Lifting drive motor
40 Screw rod
41 Bearing
42 Screw part
43 Nut member
44 Screw rod rotation drive device
50 Floor (Conveying road floor)
51 Traveling rail
52 Ceiling (Upper support frame)
53 Guide rail
54 Treatment tank
55 Side wall
56 Feeding element
57 Power supply line
60 Object to be processed (conveyed object or car body)

Claims (4)

A horizontal base that is supported so as to be able to travel along the traveling rail by a traveling rail and a guide rail that is laid in parallel to the traveling rail, and that has a front and rear wheels, and from the vicinity of the front and rear ends of the base Each of the horizontal cross sections standing vertically upwards has a triangular, quadrangular, polygonal, circular or elliptical columnar portion, and a reinforcing member connecting the upper portions of the two columnar portions to form a traveling frame, and the guide rail. Equipped with a sliding piece or roller for guidance in contact with
Each columnar portion individually supports a lifting member provided with a lifting drive device so that it can be lifted and lowered, and a pair of abbreviations having a horizontal support portion provided integrally or detachably with the vertical member at the lower end of the vertical member. An L-shaped support member is pivotally fixed to the elevating member so that the lower end support portion can be swung in the same horizontal direction perpendicular to the traveling direction and limited in the front-rear direction. The lower end support part of the support supports the transported object support straddling both support parts so as to be able to tilt in the longitudinal direction of travel ,
The elevating member has a frame member surrounding the columnar part with an appropriate gap therebetween, and a plurality of slides arranged above and below the frame member and in contact with the columnar part to support the frame member so as to be vertically movable. A conveying apparatus comprising: a moving piece or a roller; a support member pivoting portion that pivotally supports an upper end of the support member so as to swing back and forth; and a stopper that restricts the swinging back and forth of the support member in a limited manner. A lifting / lowering drive device for a lifting member supported by a pair of front and rear columnar portions of a traveling frame so as to be movable up and down includes a pair of pulleys or sprockets installed near the upper and lower ends of each columnar portion, and both pulleys or both sprockets. One of a rope or chain that is wrapped around and suspended at both ends of the lifting member, and one of the upper and lower pulleys or sprockets, or a third pulley or sprocket that contacts the ropes or chains in the course of the rope or chain. The transport device according to claim 1 , comprising an endless drive mechanism configured by a drive motor coupled to the drive motor. A lifting and lowering drive device for a lifting member supported so as to be movable up and down by a pair of front and rear columnar portions of the traveling frame is installed in parallel with each of the columnar portions, and a screw rod that supports the end portion rotatably. A nut member screwed to the screw rod and connected to the elevating member; and a rotation driving device for the screw rod, wherein the nut member elevates and lowers the elevating member by the rotating action of the screw rod. The transport apparatus according to claim 1 , Each lower longitudinal edge near the traveling frame provided travel wheels, at least one of the front rear wheel, formed by self-propelled configured with at least one motor-driven drive wheels, of claims 1 to 3 The conveying apparatus in any one.

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