JP2007030657A - Mobile power auxiliary device for manual type carrier roller - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To use a manual type carrier roller itself as an electric caster by connecting a mobile power auxiliary device to the manual type carrier roller. <P>SOLUTION: A driving carriage body 11 equipped with a power source 3 in a carriage body and connected to the manual type carrier roller 100 through a connecting means and a power transmitting body 21 directly connected to a roller 102 for travelling of the manual type carrier roller 100 and to transmit mobile power to the roller 102 for travelling from the power source 3 of the driving carriage body 11 are furnished. The power transmitting body 21 is furnished with a driving side sprocket 25 connected to the power source 3 through a clutch 6, a driven side sprocket 27 mounted on the manual type carrier roller 100, a link chain 38 wound around both of the sprockets 25, 27 and a tension side sprocket 36 free to adjust winding tensile force of the link chain 38 by rotating a taper tap 31 provided on the one end side of a tension arm 33. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention is connected to a manual conveyance roller used for loading / unloading and installing heavy objects at various factories, construction sites, etc. The present invention relates to a self-propelled power assist device for a manual transport roller that can transport a transported object without difficulty even when it is relatively difficult or when climbing an inclined surface.

  Conventionally, for transporting various heavy objects, as shown in FIG. 5, manual transport rollers 100 provided with traveling rollers 102 at the four corners of the bottom surface of the frame 101 are used, and various weights are provided thereon. It is assumed that the object is moved together with the manual conveying roller 100 in a state where an object is placed. This manual conveying roller 100 has roller support chambers at the four corners of the front, rear, left and right through a central partition surface formed in the center so as to be parallel to both wall surfaces formed on the left and right sides of the base portion of the frame 101. A traveling roller 102 formed of, for example, urethane resin so as to be fitted along a key groove formed slightly longer at the left and right symmetrical positions of the shaft through which the both wall surfaces and the central partition surface are inserted. The running rollers 102 are arranged in the respective roller support chambers by being fitted to each other.

  A turntable 103 is rotatably supported on the base portion of the frame 101, and the conveyed object P is placed on the turntable 103. Further, connecting ribs 105 project from left and right symmetrical positions on the front and rear side wall surfaces of the base, and long operation handles 106 are provided in the mounting holes that are formed to face each other in the left and right connecting ribs 105. The U-shaped one end portion of the mounting tip that is bent in a lateral U-shape at the tip can be inserted from either the forward or reverse direction. Accordingly, the operation handle 106 is attached to either one of the front and rear side wall surfaces of the base portion of the frame 101, and the manual conveying roller 100 itself is obtained by pushing or pulling the grip 107 at the other end of the operation handle 106 by hand. Is moved by human power.

Also, as disclosed in Patent Document 1 filed and registered by the present inventors, an electric caster called an electric speed roller for automatically running a running roller attached to the bottom surface of the base is used. In some cases, a motor for driving is provided in the electric caster, and the driving force is arbitrarily decelerated to control the traveling roller to be driven to rotate. As described above, conventionally, a large-sized heavy article is conveyed by the combined use of a manual conveyance roller and an electric caster.
Japanese Patent No. 3099123

  For this reason, a manual conveyance roller and an electric caster are conventionally used together. However, for example, only a manual conveyance roller or only an electric caster may be used depending on the situation. In addition, when a heavy object is conveyed using only this manual conveyance roller, an electric caster may be used instead of the manual conveyance roller. However, in order to replace the manual transport roller with an electric caster in this way, or conversely replace the electric caster with a manual transport roller, a heavy object is placed between the manual transport roller and the electric caster. It had to be changed, and the work was very troublesome.

  On the other hand, the manual transport roller 100 is convenient because it can be easily operated and used by human power, but when the object to be transported is bulky, it may be difficult to transport manually. Therefore, there has been a demand for an auxiliary self-propelled power assisting device that enables power traveling by incorporating a drive source therein as necessary.

  Therefore, the present invention was created in view of the existing circumstances as described above. For example, as in the prior art, for example, a heavy object to be transported is replaced between a manual transport roller and an electric caster. Therefore, there is no need to perform the troublesome work of exchanging the manual transport roller with an electric caster or conversely replacing the electric caster with a manual transport roller. The manual transfer roller is changed to an electric caster by being connected to the manual transfer roller, or the original manual transfer roller is restored from the electric caster by being removed from the manual transfer roller itself. It is an object of the present invention to provide a self-propelled power assisting device for a detachable manual conveyance roller.

In order to solve the above-described problems, in the present invention, for example, the caster 2 is provided at the four corners of the lower surface, the power source 3 is installed in a movable carriage, and the connecting means 14 is connected to the manual transport roller 100. Are connected directly to the drive shaft 104 of the driving roller body 102 of the manual transport roller 100 and the driving shaft 104 of the driving roller 102 of the manual transport roller 100, and the driving roller from the power source 3 of the driving table body 11. 102 includes a power transmission body 21 that transmits self-propelled power to 102.
The power transmission body 21 includes a drive side sprocket 25 connected to the power source 3 of the drive base body 11 via the clutch 6, a driven side sprocket 27 attached to the drive shaft 104 of the manual transport roller 100, The link chain 38 wound around the sprockets 25 and 27 and the taper tap 31 provided at one end of the tension arm 33 are rotated so that the tension of the link chain 38 can be adjusted. A tension-side sprocket 36 provided on the end side may be provided.
At this time, the link chain 38 is wound around any one of the drive shafts 104 arranged on the front and rear sides of the manual conveyance roller 100, and is transmitted to the other drive shafts 104 via the transmission sprocket 41. It can also be comprised so that it may become.
The taper tap 31 has a tapered outer peripheral surface so as to be fitted and locked to the circular opening 30 formed on the wall surface of the case 22 of the power transmission body 21 from the outside, and a screw hole is formed on the flat side surface of the taper tap 31. The oval tension arm 33 having a bottomed screw hole formed at one end corresponding to the screw hole is opposed to the screw hole of the taper tap 31 from the inside of the circular opening 30. The screw 32 can be screwed into the both screw holes from the outside.
A pair of link chains 38 may be wound around the two rows of teeth of the drive-side sprocket 25 and the two rows of teeth of the pair of front and rear driven sprockets 27 so as to be parallel to each other.
The connecting means 14 has a connector plate 14C having a pipe-like one end attachment portion 14A at one end and a pipe-like other end attachment portion 14B at the other end, and attachment holes to which the operation handle 106 of the manual transport roller 100 is attached. A pair of left and right connecting ribs 105, a pair of left and right driving base ribs 12 having mounting holes protruding from the driving base body 11, mounting holes for the driving base ribs 12 of the driving base body 11, and the manual transport roller 100. Each of the attachment holes of the connecting rib 105 can be provided with a connecting rod 13 that is inserted together with the one end attaching portion 14A and the other end attaching portion 14B.

In the self-propelled power assist device for a manual transport roller according to the present invention configured as described above, the drive base body 11 for power supply is connected to the manual transport roller 100 via a connecting means 14. The drive shaft 104 of the traveling roller 102 of the manual transport roller 100 is directly connected via the power transmission body 21. As a result, the self-running power is transmitted from the power source 3 of the drive base body 11 to the running roller 102.
The taper tap 31 in the power transmission body 21 adjusts the winding tension of the link chain 38 in the power transmission body 21. That is, the tightening torque of the tape 32 of the taper tap 31 is slightly loosened so that the pressure contact force between the tapered outer peripheral surface of the taper tap 31 and the circular opening 30 is loosened, and then the tension arm with the taper tap 31 as a fulcrum is used. 33, the tension side sprocket 36 is rotated to the link chain 38 side, whereby the link chain 38 is pushed to increase the winding tension. Conversely, by rotating the tension side sprocket 36 together with the tension arm 33 with the taper tap 31 as a fulcrum in a direction away from the link chain 38, the pressing force to the link chain 38 by the tension side sprocket 36 is released and the winding is performed. Reduce the rack tension. Then, at the position where the link chain 38 is adjusted to an arbitrary winding tension, the tightening torque of the screw 32 of the taper tap 31 is tightened, and the pressure contact force between the tapered outer peripheral surface of the taper tap 31 and the circular opening 30 is increased. By strengthening, the taper tap 31 is fixed in a non-rotatable state.
The connecting means 14 has a pipe-like one end mounting portion 14A formed at one end of the connector plate 14C positioned between the mounting holes of the left and right driving base ribs 12, and then the one driving base rib. The connector plate 14C is connected to the drive base vehicle body 11 side via the one end attachment portion 14A and the drive base rib 12 by inserting the connecting rod 13 from the terminal 12 to the other drive base rib 12 through the one end attachment portion 14A.
On the other hand, after the operation handle 106 is removed from the pair of left and right connecting ribs 105 of the manual transport roller 100, the pipe-like other end mounting portion 14 </ b> B formed on the other end of the connector plate 14 </ b> C is attached. The other end mounting portion 14B of the connector plate 14C is positioned between the holes. Then, the connecting rod 13 is inserted into the other connecting rib 105 from the one connecting rib 105 through the one end attaching portion 14B, so that the other end attaching portion 14B of the connector plate 14C is connected to the connecting rib 105 on the manual conveyance roller 100 side. As a result, the manual conveying roller 100 and the drive base body 11 are connected in tandem via the connecting means 14.

  According to the present invention, as in the prior art, the manual conveyance roller can be replaced with an electric caster by changing the weight to be conveyed between the manual conveyance roller and the electric caster according to the situation. On the contrary, there is no need to perform the troublesome work of replacing the electric caster with a manual transport roller, and the manual transport roller can be changed to an electric caster by connecting to the manual transport roller itself. Alternatively, it is possible to restore the original manual transport roller from the electric caster by removing it from the manual transport roller itself.

  That is, this is because the present invention is equipped with a power source 3 in a movable carriage, and is connected to a manual transport roller 100 via a connecting means 14, A power transmission body 21 that is directly connected to the drive shaft 104 of the travel roller 102 of the transport roller 100 and transmits the self-running power from the power source 3 of the drive base body 11 to the travel roller 102. With this, the manual transport roller 100 itself can be used as an electric caster by connecting the drive base body 11 and the power transmission body 21 to the manual transport roller 100.

  The power transmission body 21 includes a drive side sprocket 25 connected to the power source 3 of the drive base body 11 via the clutch 6, a driven side sprocket 27 attached to the drive shaft 104 of the manual transport roller 100, The link chain 38 wound around the sprockets 25 and 27 and the taper tap 31 provided at one end of the tension arm 33 are rotated so that the tension of the link chain 38 can be adjusted. Since the tension side sprocket 36 provided on the end side is provided, the winding tension of the link chain 38 in the power transmission body 21 can be easily adjusted by the rotation of the taper tap 31.

  The taper tap 31 has a tapered outer peripheral surface so as to be fitted and locked to the circular opening 30 formed on the wall surface of the case 22 of the power transmission body 21 from the outside, and a screw hole is formed on the flat side surface of the taper tap 31. The oval tension arm 33 having a bottomed screw hole formed at one end corresponding to the screw hole is opposed to the screw hole of the taper tap 31 from the inside of the circular opening 30. Since the screw 32 is screwed from the outside to both screw holes, the tightening torque of the screw 32 of the taper tap 31 is tightened at the position where the link chain 38 is adjusted to an arbitrary winding tension, thereby opening the circular opening. The taper tap 31 itself can be easily fixed by the pressure contact force of the taper-shaped outer peripheral surface of the taper tap 31 with respect to the portion 30. Optionally wound tension has been adjusted in the chain 38 always can be maintained constant.

  Since the pair of link chains 38 are wound around the two rows of teeth of the drive side sprocket 25 and the two rows of teeth of the pair of front and rear driven sprockets 27 so as to be parallel to each other, manual conveyance The transmission torque of the power source 3 in the drive base vehicle body 11 through the power transmission body 21 to the running roller 102 of the roller 100 can be improved.

  The connecting means 14 has a connector plate 14C having a pipe-like one end attachment portion 14A at one end and a pipe-like other end attachment portion 14B at the other end, and attachment holes to which the operation handle 106 of the manual transport roller 100 is attached. A pair of left and right connecting ribs 105, a pair of left and right drive base ribs 12 having mounting holes projecting from the front side of the drive base body 11, a mounting hole for the drive base ribs 12 of the drive base body 11, and a manual type Since each of the attachment holes of the connecting rib 105 of the conveyance roller 100 includes the one end attachment portion 14 </ b> A and the other end attachment portion 14 </ b> B, the connection rod 13 is inserted, so that the manual conveyance roller 100 and the drive base vehicle body 11 are connected. Can be done easily. In particular, since the pair of left and right connecting ribs 105 having mounting holes to which the operation handle 106 of the manual transport roller 100 is attached are used for connecting the drive base body 11, an extra connection portion with respect to the manual transport roller 100 is provided. There is no need to form.

  The link chain 38 is wound around any one of the drive shafts 104 arranged at the front and rear of the manual conveying roller 100 and is driven and transmitted to the other drive shaft 104 via the transmission sprocket 41. By doing so, the winding structure of the link chain 38 can be simplified, and the linkage and incorporation into the manual transport roller 100 can be easily performed.

  Note that the reference numerals added in the means for solving the above-described problems and the effects of the invention are given for easy reference to the parts showing the components shown in the drawings. The present invention is not limited to the structure / shape indicated by the reference numeral.

  Hereinafter, the best mode for carrying out the present invention will be described with reference to the drawings. Reference numeral 1 shown in the figure is a self-propelled power assisting device connected to a manual conveying roller 100, and As shown in FIG. 1, the power assist device 1 is equipped with a power source 3 in a box-shaped carriage that has casters 2 at the four corners of the lower surface and is movable, and is connected to a manual transport roller 100 as described later. The power supply driving base body 11 is connected in tandem via the means 14, and the driving shaft 104, which will be described later, of the traveling roller 102 of the manual transport roller 100 is directly connected to the power of the driving base body 11. A power transmission body 21 for transmitting self-running power from the source 3 to the running roller 102 is provided.

  As shown in FIG. 5, the manual conveyance roller 100 is formed by a frame 101 with a flat box having an opening of a flat box having a downward plane, and substantially four corners of the frame 101 are, for example, urethane resin or the like. The frame 101 itself is formed of a metal material such as a lightweight and strong aluminum alloy that supports and supports the object to be conveyed P and supports the load.

  That is, on the lower surface side of the frame 101, roller support chambers are provided at four corners by being partitioned by partition plates orthogonal to each other. A shaft inserted into the central partition plate for forming the roller support chambers on the left and right sides and the left and right side wall surfaces of the frame 101 facing the partition plate is rotatably supported by bearings disposed on the left and right side wall surfaces. The lower surface side of the frame 101 is fitted with a traveling roller 102 formed of, for example, urethane resin so as to be fitted along a key groove that is formed slightly longer at the symmetrical position of the shaft. A traveling roller 102 is arranged in each of the roller bearing chambers at the four corners. Further, the turntable 103 is rotatably supported on a top plate at the top of the frame 101 by a rotating shaft supported via a pivot bearing formed on the top plate, a ball bearing disposed on the top plate surface, and the like. The transferred object P placed on the turntable 103 is supported by the side of the frame 101, and the turntable 103 itself has the frame 101 in an arbitrary direction with respect to the transferred object P. Relative alignment is possible.

  A hexagonal drive shaft 104, for example, is integrally formed at both ends of both shafts, and when carrying the object P in a state where the object P is placed on the manual conveyance roller 100, either left or right By rotating the drive shaft 104, the manual conveyance roller 100 itself can be finely adjusted forward or backward. Further, connecting ribs 105 project from left and right symmetrical positions on the front and rear side wall surfaces of the frame 101, and long operation handles are provided in the mounting hole portions that are formed to face each other in the left and right connecting ribs 105. The U-shaped one end portion of the mounting front end portion bent in a lateral U shape at the front end of 106 can be fitted and inserted from either the forward or reverse direction. An operation handle 106 is attached, and the manual conveyance roller 100 is moved by manually pushing or pulling the grip 107 at the other end of the operation handle 106.

  As shown in FIGS. 2 and 3, the drive base body 11 has an output shaft 5 that extends through a speed reducer 4 in a laterally arranged motor that is a power source 3, and is formed in the side wall surface of the carriage. A cylindrical clutch 6 having a concave and convex groove surface 6A formed along the circumference of the end face is fitted to the output shaft 5, and a circumferential surface side of the clutch 6 is fitted to the output shaft 5. It is fixed to the output shaft 5 by a screw screwed in. A drive-side sprocket 25, which will be described later, in which the tooth portions of the power transmission body 21 are formed in two rows is formed on the uneven groove surface 25A formed along the circumference of one end surface of the drive-side sprocket 25. 6 A of groove surfaces are mounted so that it may engage, and this drive side sprocket 25 is covered with the rear side formed in the lid frame shape of the one end opening shape of case 22 which comprises the power transmission body 21 mentioned later. The opening side of the case 22 is fixed to the side wall surface of the carriage by screws and the pivot shaft 23 fixed to the inner surface of the case 22 by screws is rotatably supported via a ball bearing 24. It is.

  The motor as the power source 3 is provided with an inverter circuit 7. The cover body 8 is provided with a fan guard on the side wall surface and a grill on the rear wall surface so as to cover the inverter circuit 7. Is closed. Further, as shown in FIG. 4, a U-shaped frame-shaped operation handle 9 for manually moving the manual transport roller 100 together with the drive base body 11 is attached to the rear side of the drive base body 11. At the step formed on the side opposite to the output shaft side of the drive base body 11, the end of the cord of the remote controller 10 for driving and driving the manual transport roller 100 remotely via the drive base body 11 A socket 10A for connecting the plug is attached. The remote controller 10 performs an on / off operation, a shift operation, and a forward / reverse switching operation of the power source 3 via the inverter circuit 7.

  Further, as shown in FIG. 2, drive base ribs 12 project from the left and right symmetrical positions on the front side of the drive base vehicle body 11, and mounting holes are formed in the left and right drive base ribs 12 so as to face each other. In each case, a long connecting rod 13 can be inserted. This connecting rod 13 is driven after a pipe-like one end mounting portion 14A formed at one end of a connector plate 14C as the connecting means 14 is positioned between the mounting holes of the left and right drive base ribs 12. The connecting rod 13 is inserted from one end side of the base rib 12 so as to pass the one end mounting portion 14A, and both ends of the connecting rod 13 extended outward from the left and right drive base ribs 12 are, for example, a retaining ring or a retaining pin (not shown). By fixing, the one end mounting portion 14A of the connector plate 14C is connected to the driving base rib 12 on the driving base body 11 side.

  On the other hand, a long connecting rod 13 can be fitted into a pipe-like other end mounting portion 14B formed at the other end of the connector plate 14C, and the operation handle 106 of the manual transport roller 100 is attached to the frame. After removing from the pair of left and right connecting ribs 105 on the side wall surface 101, the other end mounting portion 14B of the connector plate 14C is positioned between the mounting holes of both connecting ribs 105, and the other end mounting from the one end side of the connecting rib 105 is performed. The connecting rod 13 is inserted so as to pass through the portion 14B, and both ends of the connecting rod 13 extending outward from the left and right connecting ribs 105 are fixed with a retaining ring, a retaining pin, etc. The other end mounting portion 14B is connected to the connecting rib 105 on the manual conveyance roller 100 side. In this way, the manual transport roller 100 and the drive base body 11 are connected in tandem via the connecting means 14.

  The power transmission body 21 is configured together with the case 22 inside a case 22 formed in a lid frame shape in which the front side is formed in a laterally elongated box shape, the rear side is wide in the vertical direction and one side is opened. ing. In other words, the front side box of the case 22 is opposed to the position of the drive-side sprocket 25 supported on the rear inner surface of the case 22 and is supported rotatably on both side walls of the case 22 via ball bearing bearings 24. A driven sprocket 27 having tooth portions formed in two rows is fixed to the follow shaft 26 in a front and rear row corresponding to the pair of front and rear drive shafts 104 of the manual conveying roller 100. The driven side sprocket 27 is fixed to the follow shaft 26 by, for example, forming a key groove in the central shaft hole of the driven side sprocket 27, and providing a projection on the follow shaft 26 so as to engage with the key groove. Is done.

  Then, a hexagonal engagement hole 28 is formed on the end surface of the follow shaft 26 in a cross section in accordance with the drive shaft 104 formed on the shaft end portion of the traveling roller 102 of the manual conveyance roller 100. By attaching the drive shaft 104 to the engagement hole 28, the traveling roller 102 of the manual transport roller 100 and the driven sprocket 27 are integrated. Ball bearings fixed to both side walls of the case 22 include a position slightly below the middle of the front and rear follow shafts 26 and a position slightly above the rear side of the driven sprocket 27 on the rear side. Through 24, an idle shaft 29 having two rows of rollers arranged along the circumference at the center is rotatably supported.

  Further, a tapered circular opening 30 whose inner peripheral surface is widened to the outside is formed at a position on the inner surface of the rear portion of the case 22 that is slightly above and ahead of the position of the drive-side sprocket 25. Further, a disc-shaped taper having a tapered outer peripheral surface so as to face and match the tapered inner peripheral surface of the circular opening 30 and having a plurality of screw holes on the flat side surface along the circumference. The tap 31 is fitted into the circular opening 30 from the outside. Then, the screw hole side of the elliptical tension arm 33 in which a plurality of screw holes are formed on one end side along the circumference corresponding to the screw holes of the taper tap 31 is matched with the screw hole of the taper tap 31. In this state, the taper tap 31 is brought into contact with the taper tap 31 from the inside of the circular opening 30, and the screw 32 is screwed into the screw holes from the outside. Further, a support shaft 34 protrudes from the other end side of the tension arm 33, and a tension side sprocket 36 having tooth portions formed in two rows is rotatable on the support shaft 34 via a needle bearing 35. The tension side sprocket 36 is locked by a stop washer 37 fitted to the support shaft 34 from the outside so that the tension side sprocket 36 is not detached from the support shaft 34.

  Further, the pair of link chains 38 are wound in parallel with each other so as to mesh with the two rows of teeth of the drive side sprocket 25 and the two rows of teeth of the pair of front and rear driven sprockets 27. . At this time, the roller portion of the idle shaft between the front and rear driven sprockets 27 and the tension side sprocket 36 on the other end side of the tension arm 33 are arranged to hang from the outside of the link chain 38. .

  Then, by slightly loosening the tightening torque of the screw 32 screwed into the bottomed screw hole of the tension arm 33 from the screw hole of the taper tap 31, the outer peripheral surface of the taper tap 31 and the inner peripheral surface of the circular opening 30 The taper tap 31 can be rotated by this, and the tension side sprocket 36 can be swung together with the tension arm 33 with the taper tap 31 as a fulcrum, so that the winding tension of the link chain 38 can be arbitrarily set. It can be adjusted.

  On the other hand, by tightening the tightening torque of the screw 32, the pressure contact force between the outer peripheral surface of the taper tap 31 and the inner peripheral surface of the circular opening 30 is strengthened. 33 is fixed at an arbitrary inclination angle, so that an arbitrarily adjusted winding tension of the link chain 38 can be always maintained constant.

  Next, an example of use and operation of the best mode configured as described above will be described. First, when the drive base body 11 is attached to the manual transport roller 100, as shown in FIG. One end mounting portion 14A of the connector plate 14C as the means 14 is connected to the driving base rib 12 on the driving base body 11 side by the connecting rod 13, and the other end mounting portion 14B is manually connected to the driving base rib 12 by the connecting rod 13. The manual conveyance roller 100 and the drive base body 11 are connected in a tandem shape by connecting to the connecting rib 105 of the type conveyance roller 100. Then, as shown in FIG. 4, the plug at the end of the cord of the remote controller 10 is connected to the socket 10A.

  Then, the power transmission body 21 is attached to the drive base body 11. When the power transmission body 21 is attached, the screw 22 is placed with the opening side of the rear end side of the case 22 of the power transmission body 21 facing the side wall surface of the drive base body 11. Stop and fix. At this time, the driving side sprocket 25 is connected to the clutch 6 by the crest portion of the concave and convex groove surface 25A of the driving side sprocket 25 on the power transmission body 21 side and the valley portion of the concave and convex groove surface 6A of the clutch 6 engaging each other. Is done. At the same time, the pair of front and rear hexagonal drive shafts 104 of the manual conveying roller 100 are inserted into the hexagonal engagement holes 28 formed on the end surfaces of the pair of front and rear follow shafts 26 protruding from the front end side wall of the case 22 of the power transmission body 21. By fitting and mounting each, the traveling roller 102 of the manual transport roller 100 and the driven sprocket 27 of the power transmission body 21 are integrated.

  Next, the winding tension of the link chain 38 in the power transmission body 21 is adjusted. At this time, as shown in FIG. 2, the tightening torque of the screw 32 of the taper tap 31 is slightly loosened to reduce the pressure contact force between the tapered outer peripheral surface of the taper tap 31 and the tapered inner peripheral surface of the circular opening 30. After the loosened state, the taper tap 31 itself is rotated, and the tension side sprocket 36 is rotated together with the tension arm 33 with the taper tap 31 as a fulcrum. At this time, as shown in FIG. 3, when the tension-side sprocket 36 is rotated counterclockwise when viewed from the side surface of the case 22 by the taper tap 31, the link chain 38 is pushed downward to increase the winding tension.

  On the other hand, when the tension-side sprocket 36 is rotated clockwise as viewed from the side of the case 22 by the taper tap 31, the tension-side sprocket 36 moves away from the link chain 38 in the upward direction, so that the winding tension is reduced. Then, at the position where the link chain 38 is adjusted to an arbitrary winding tension, the tightening torque of the screw 32 of the taper tap 31 is tightened, and the tapered outer surface of the taper tap 31 and the tapered inner surface of the circular opening 30 are formed. The taper tap 31 is fixed in a non-rotatable state by increasing the pressure contact force with the peripheral surface. As a result, the arbitrarily adjusted winding tension of the link chain 38 is always kept constant.

  When the power source 3 in the drive base vehicle body 11 is driven by the switch operation of the remote controller 10, the clutch 6 fixed to the output shaft 5 rotates, and the drive side sprocket 25 coupled to the clutch 6 Rotate together. A pair of front and rear driven sprockets 27 on the front side of the case 22 are rotationally driven via the link chain 38 in conjunction with the rotation of the drive side sprocket 25 and are inserted into the engagement holes 28 of the driven side sprocket 27. The traveling roller 102 is rotated via the drive shaft 104 of the traveling roller 102 of the manual conveyance roller 100. Thus, the self-propelled power is transmitted from the power source 3 of the drive base body 11 to the travel roller 102 via the power transmission body 21, and the object P to be transported placed on the turntable 103 of the manual transport roller 100. Is transported.

  When the self-propelled power assist device 1 is removed and the original manual transport roller 100 is restored, the case 22 of the power transmission body 21 fixed with screws is first attached to the side of the drive base body 11. A pair of front and rear shafts of the manual transport roller 100 are formed at the ends of the pair of front and rear shafts from hexagonal engagement holes 28 on the end surfaces of the pair of front and rear follow shafts 26 that are removed from the wall surface and simultaneously project from the front end side wall of the case 22. Each hexagonal drive shaft 104 is removed. Then, after the other end mounting portion 14B of the connector plate 14C as the connecting means 14 is removed from the connecting rib 105 of the manual conveying roller 100 by removing the connecting rod 13, the end of the operation handle 106 is connected to the connecting rib 105. By inserting and inserting one end of the U-shaped end portion of the mounting tip bent in a lateral U-shape from either the forward or reverse direction, the original manual conveyance roller 100 is restored.

  In order to move the drive base body 11 in other ways when linked to the manual conveyance roller 100, for example, the drive of the power source 3 in the drive base body 11 is stopped by a switch operation of the remote controller 10, for example. A U-shaped frame-shaped operation handle 9 may be inserted into a handle connecting cylinder provided on the drive base body 11 itself, and the operation handle 9 may be moved by hand.

  FIG. 5 shows another embodiment in which the link chain 38 is wound around any one of the drive shafts 104 arranged at the front and rear of the manual conveying roller 100. The other drive shaft 104 is driven and transmitted via the transmission sprocket 41. The drive shaft 104 around which the link chain 38 is wound is on the front side of the manual transport roller 104, and the transmission sprocket 41 is interposed between the front and rear drive shafts 104 of the manual transport roller 100. The driven rotation of one drive shaft 104 by the link chain 38 is transmitted to the other drive shaft 104, and this is further driven to rotate.

  Specifically, a driven sprocket 27 in which an engagement hole 28 to be fitted to one of the drive shafts 104 is formed is rotatably supported by a follow shaft 26 at the rear portion of the case 22 in the power transmission body 21. The link chain 38 is wound around the driven side sprocket 27, and the front and rear driven sprockets 42 supported by the case 22 are rotatably engaged with the drive shafts 104 of the manual conveying roller 100. A transmission sprocket 41 that meshes with each of the driven linkage sprockets 42 is rotatably supported on the case 22 by a follow shaft 43. By doing so, the engagement hole 28 of the driven side sprocket 27 and one of the driven linkage sprockets 42 are fitted to one drive shaft 104, while the other driven linkage sprocket 42 is fitted to the other drive shaft 104. It is only necessary that the vehicle is mounted and driven by the drive base body 11.

  The driven sprocket 27 may be fitted to the drive shaft 104 on the rear side, and the drive shaft 104 is not limited to the two rows that are paired in the front and rear, but may be a plurality of rows. Correspondingly, the driven sprocket 42 and the transmission sprocket 41 are also arranged in a plurality of rows.

It is a disassembled perspective view which shows the best form for implementing this invention. It is a top view which similarly shows a use condition. It is a side view which similarly shows a use condition. It is a rear view which similarly shows a use condition. Another embodiment is shown, in which (a) is a plan view and (b) is a side sectional view. The manual conveyance roller in the past is shown, (a) is a plan view, (b) is a side view.

Explanation of symbols

P ... Conveyed object 1 ... Self-propelled power auxiliary device 2 ... Caster 3 ... Power source (motor) 4 ... Reducer 5 ... Output shaft 6 ... Clutch 6A ... Uneven groove surface 7 ... Inverter circuit 8 ... Cover body 9 ... Operation handle DESCRIPTION OF SYMBOLS 10 ... Remote controller 10A ... Socket 11 ... Drive base vehicle body 12 ... Drive base rib 13 ... Connecting rod 14 ... Connecting means 14A ... One end attaching part 14B ... Other end attaching part 14C ... Connector plate 21 ... Power transmission body 22 ... Case 23 ... Pivot shaft 24 ... Ball bearing 25 ... Drive side sprocket 25A ... Uneven groove surface 26 ... Follow shaft 27 ... Drive side sprocket 28 ... Engagement hole 29 ... Idle shaft 30 ... Circular opening 31 ... Taper tap 32 ... Screw 33 ... Tension Arm 34 ... support shaft 35 ... needle bearing 36 ... tension side sprocket 37 Stop washer 38 ... link chain 41 ... transmission sprocket 42 ... driven linkage sprocket 43 ... follow shaft 100 ... manual conveying roller 101 ... frame 102 ... travel roller 103 ... turntable 104 ... drive shaft 105 ... linkage rib 106 ... operation handle 107 …grip

Claims (6)

  A power source is installed in the movable carriage and is connected to the manual transport roller via a connecting means. The drive base body for power supply and the drive shaft of the travel roller of the manual transport roller A self-propelled power assist device for a manual transport roller, comprising a power transmission body that is directly connected and transmits self-propelled power from a power source of a drive base vehicle body to the travel roller.   The power transmission body includes a drive-side sprocket coupled to the power source of the drive base vehicle body via a clutch, a driven-side sprocket attached to the drive shaft of the manual transport roller, a link chain wound around both sprockets, The tension side sprocket provided in the other end side of the said tension arm so that the winding tension | tensile_strength of a link chain can be adjusted by rotating the taper tap provided in the one end side of the tension arm. Self-propelled power assist device for manual transport rollers.   3. The manual type according to claim 2, wherein the link chain is wound around any one of the front and rear drive shafts of the manual transport roller, and is driven and transmitted to the other drive shaft via a transmission sprocket. Self-propelled power assist device for transport rollers.   The taper tap has a tapered outer peripheral surface so as to be fitted and locked from the outside into a circular opening formed in the case wall surface of the power transmission body, and has a screw hole on the flat side surface of the taper tap. Align the screw hole side of the elliptical tension arm with a bottomed screw hole corresponding to the hole on one end side from the inside of the circular opening to the screw hole of the taper tap, and from the outside to both screw holes. 4. A self-propelled power assist device for a manual conveying roller according to claim 2, wherein a screw is screwed.   The manual type according to any one of claims 2 to 4, wherein a pair of link chains are wound around each of the two rows of teeth of the driving sprocket and the two rows of teeth of the driven sprocket so as to be parallel to each other. Self-propelled power assist device for transport rollers. The connecting means includes a pair of left and right connecting ribs having a connector plate having a pipe-like one end attachment portion at one end and a pipe-like other end attachment portion at the other end, and attachment holes to which an operation handle in a manual transport roller is attached. And a pair of left and right drive base ribs having mounting holes projecting from the drive base car body, a mounting hole for the ribs of the driving base car body, and a mounting hole for the ribs of the manual transport roller, respectively. A self-propelled power assisting device for a manual transport roller according to any one of claims 1 to 5, further comprising a connecting rod that is inserted together with the portion.

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