JP2008183944A - Cargo moving device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cargo moving device capable of smoothly loading and unloading a cargo in a short time by reducing the labor of the unloading work and the loading work of the cargo. <P>SOLUTION: A cargo bed rail 5 is installed on a cargo bed 3 of a vehicle 2, and a boarding ramp rail 8 is installed on a boarding ramp 6. The boarding ramp 6 is arranged at the elevated position P1 in an unloading or loading mode, and a truck 9 is moved from the cargo bed 3 to the boarding ramp 6 or from the boarding ramp 6 to the cargo bed 3. In this condition, the truck 9 passes through a space between the cargo bed rail 5 and the boarding ramp rail 8. Since a pair of wheels 30a, 30b is provided on each of wheel assemblies 26a, 26b; 27a, 27b, and when one wheel 30a passes through a space between the cargo bed rail 5 and the boarding ramp rail 8, the other wheel 30b is supported by the cargo bed rail 5 or the boarding ramp rail 8, and stably and smoothly moved between the boarding ramp 6 and the cargo bed 3 without giving any vibration to the truck 9 and a cargo W. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a load moving apparatus capable of stably and quickly performing unloading work and unloading work of a load mounted on a loading platform of a vehicle without requiring labor.

  A typical prior art is described in Patent Document 1, for example. In this prior art, loading platform rails are laid on the loading platform of tire repair / replacement vehicles, also called service cars for repairing or replacing large tires such as buses, trucks and special construction vehicles, and can be raised and lowered on the loading platform. A load moving device has been proposed in which a lifting platform rail is laid on a lifting platform called a lifter, and a load is moved along the loading platform rail and the lifting platform rail to perform unloading work and unloading work. .

  In this prior art, the load is a tire changer that replaces the tire with respect to a wheel. The tire changer is mounted on the loading platform, and the tire is loaded into the loading platform, and the tire is repaired or replaced. In order to solve the problem that the tire changer swings with the loading platform, the stability is poor, and it takes time to put a large tire on the loading platform from the ground, so that the raised position is almost equal to the height position of the loading platform floor. The lifting platform is arranged on the platform, the load is moved from the loading platform to the lifting platform along the loading platform rail and the lifting platform rail, and the lifting platform can be moved from the raised position to the lowered position near the ground. The unloading work of the load is facilitated and speeded up.

  In such prior art, when the lifting platform moves from the lowered position in contact with the ground to the elevated position that is the same height as the floor of the loading platform, and when it moves from the elevated position to the closed position that stands substantially vertically, the lifting platform In order to prevent the rail from interfering with the loading platform rail, the end of the loading platform rail and the end of the lifting platform rail that are opposed to each other at the raised position are retracted in a direction away from each other. Therefore, a gap is interposed between the end portion of the loading platform rail and the end portion of the lifting platform rail. Therefore, when the load is moved from one to the other, or from the other to the other, between the loading platform rail and the lifting platform rail, the load cannot be smoothly transferred between the rails due to the existence of the gap, and the load is vibrated. There is a problem that unloading work and unloading work cannot be performed smoothly and quickly.

  Another prior art for solving such a problem is described in Patent Document 2, for example. In this prior art, a loading platform rail is laid on the loading platform, and a lifting platform rail is laid on a lifting platform called a lifter. The elevator has a double structure having an upper plate on which the elevator rail is laid and a lower plate held by the upper plate, and a load such as a tire changer is mounted on the upper plate of the elevator Thus, the lifting platform is lowered to a lowered position near the ground, and the load can be moved even in the lowered position by moving the upper plate backward while the load is mounted on the upper plate. .

  The lifting platform rail and the loading platform rail allow the lifting platform lifter to rotate and move up and down to prevent interference between the rails. Therefore, there is a gap between the end of the loading platform rail and the end of the lifting platform rail. In this respect, it is configured in the same manner as the prior art of Patent Document 1, but between the end of the loading platform rail and the end of the lifting platform rail, the lifting platform is disposed at the raised position. In the state, in order to prevent the generation of the gap, the connecting rail is detachably attached to prevent the cargo bed rail and the lift rail from being divided by the gap.

Japanese Utility Model Publication No. 7-5915 Japanese Patent Laid-Open No. 11-192881

  In the prior art of Patent Document 2, the load rail and the lift rail are connected by the connecting rail to prevent a gap between the load rail and the lift rail, but the lift is moved from the raised position to the lowered position. When moving from the raised position to the closed position, it is necessary for the operator to manually remove the connecting rail from the gap between the loading platform rail and the lifting platform rail. In addition, when the lifting platform is moved from the lowered position or the closed position to the raised position, it is necessary for an operator to manually attach the connecting rail to the gap between the loading platform rail and the lifting platform rail. Since the mounting operation and the dismounting operation to and from the gap between the connecting rails must be performed manually, there is a problem that labor and time are required for performing the unloading operation and the unloading operation.

  The problem of time and effort required for the unloading and unloading operations described above is not limited to the case where the load is a tire changer. For example, a wheel balancer, a generator, a compressor, etc. The same applies to various devices.

  An object of the present invention is to provide a load moving device that can reduce the labor of unloading work and unloading work, and can perform unloading work and unloading work smoothly in a short time.

The present invention includes a plurality of cargo bed rails laid on the floor of a cargo bed of a vehicle,
A lifting platform that is provided in the vehicle and is moved up and down over a rising position that is close to the floor of the loading platform and substantially the same height, and a predetermined lowering position;
Elevating drive means for elevating and driving the elevating platform over the ascending position and the descending position;
An end portion that is laid on the mounting surface facing the upper side of the lifting platform and is disposed near the loading platform, and an end portion that is disposed near the lifting platform of the loading platform rail in a state where the lifting platform is disposed at the raised position. A plurality of elevator rails arranged opposite to each other,
A wheel assembly including a pair of wheels spaced apart in the traveling direction along the loading platform rail and the lifting platform rail is provided on each of the traveling direction both sides and the left and right sides of the base on which the load is mounted; It is the load movement apparatus characterized by including.

  According to the present invention, a plurality of loading platform rails are laid on the floor of the loading platform of the vehicle, and a plurality of lifting platform rails are laid on the lifting platform of the vehicle. The lifting platform is driven up and down with respect to the loading platform by the lifting drive means, and is moved up and down between the raised position and the lowered position. In the state where the lifting platform is located at the raised position, the end of the loading platform rail near the lifting platform is spaced from the end of the lifting platform rail near the loading platform in the direction in which the loading platform rail and the lifting platform rail extend. Opposite and spaced apart.

  When unloading the load from the loading platform, the loading is mounted on the cart disposed on the loading platform, so the lifting platform is placed at the raised position, and the carriage is moved from the loading platform onto the lifting platform. At this time, the carriage passes through the gap between the loading platform rail and the lifting platform rail, and each wheel assembly is provided with a pair of wheels at intervals in the traveling direction along the loading platform rail and the lifting platform rail. Therefore, it is possible to prevent the wheels from falling into the gap. That is, when one of the pair of wheels passes through the gap between the loading platform rail and the lifting platform rail, the other wheel exists on the loading platform rail or the lifting platform rail. Moreover, when the other of each pair of wheels passes through the gap between the loading platform rail and the lifting platform rail, the one wheel exists on the lifting platform rail or the loading platform rail. Therefore, each traveling guide means is in a state in which one of each pair of wheels is supported by the carrier rail or the elevator rail even if it passes through the gap between the carrier rail and the elevator rail. It can be moved from the loading platform to the lifting platform in a short time without giving a large vibration.

  The load on the carriage that has moved onto the lifting platform can be lowered to a predetermined lowered position by lowering the lifting platform from the raised position to the lowered position by the lifting drive means. The predetermined lowering position may be a height position at which the lifting platform contacts the ground, or may be a height position immediately before contact, and the height position according to the use of the load is appropriately selected. That's fine.

  In addition, when unloading the load from the lowered position, since the lifting platform is disposed at the lowered position, contrary to the above-described unloading, the lifting platform is raised from the lowered position to the raised position. . At this time, as described above, the end of the lifting platform near the loading platform of the lifting platform is spaced apart from the end of the loading platform near the lifting platform, so that the lifting platform rail and the loading platform are separated. Interference with the rail is prevented. The load on the lifting platform arranged at the elevated position is carried into the loading platform by moving the carriage from the lifting platform rail onto the loading platform rail. Even when moving the load to such a loading platform, each wheel of the wheel assembly can be moved smoothly without falling into the gap between the lifting platform rail and the end of the loading platform rail. Without giving vibration to the load on the carriage, the load can be moved quickly and stably from the lifting platform to the loading platform and can be unloaded.

  Further, the present invention is provided in a wheel assembly provided on at least one side of the base in the running direction and on both the left and right sides, a rotational force transmitting means for mutually transmitting the rotational force of each pair of wheels, and provided on the base. And travel driving means for rotating and driving each one of the pair of wheels.

  According to the present invention, among the plurality of wheel assemblies, the wheel assembly provided on at least one side of the base in the traveling direction and on both the left and right sides transmits the rotational force between the wheels to each other by the rotational force transmitting means. Each wheel is rotationally driven by a rotational drive source.

  The rotational force transmitting means transmits the rotation of each wheel of the wheel assembly provided on one side in the running direction of the base and on both the left and right sides, so that each wheel assembly passes through the gap between the cargo bed rail and the lift rail. When one of the pair of wheels of each wheel assembly is passing through the gap, the other wheel travels on the carrier rail or the lift rail so that the other wheel rotates. The force is transmitted to one wheel by the rotational force transmitting means, and when this one wheel passes through the gap and moves to the carrier rail or the elevator rail, the frictional resistance that one wheel receives from the carrier rail or the elevator rail. It is possible to prevent a sudden braking force from acting on the vehicle and decelerating. This reduces the speed fluctuation in the traveling direction due to the carriage passing through the gap, improves the running stability of the carriage, allows the cargo to move stably and quickly, and the time required for unloading and unloading Can be shortened and speeded up.

  Further, in the wheel assembly in which the rotational force of each wheel is transmitted by the rotational force transmission means, one of the wheels is rotationally driven by a rotational drive source, and the rotational force is transmitted to the other wheel by the rotational force transmission means. This makes it easier and faster for unloading and unloading work by allowing the truck with the load to travel between the carrier rail and the lift rail so that it can be moved easily without human power. Can be planned.

  Furthermore, the present invention is characterized by including a locking means for locking the carriage to the lifting platform.

  According to the present invention, movement of the carriage on the elevator platform is prevented by the locking means, and the carriage moves undesirably on the elevator platform even when the elevator rail is inclined with respect to the horizontal. Is prevented and safety is improved. In addition, even if the operation on use or the contact force or pressing force of other objects acts on the load mounted on the lifting platform, the carriage is mounted on the carriage by being locked to the lifting platform by the locking means. The load is prevented from moving carelessly, and the convenience in handling the load is improved.

  According to the present invention, each wheel assembly is provided with a pair of wheels, so that even if each wheel assembly passes through the gap between the end of the cargo bed rail and the end of the lift rail, When one wheel passes through the gap, each other wheel is supported on a carrier rail or a lift rail so that the wheel is prevented from falling into the gap, and the carrier and the lift are not caused to give a large vibration to the load. The unloading and unloading operations can be performed by smoothly moving between the platforms.

  Further, according to the present invention, at least one wheel of the wheel assembly provided on one side in the traveling direction and on both the left and right sides is transmitted with the rotational force by the rotational force transmitting means, so that the carriage on which the load is mounted has a gap. Even if it passes through, the impact force does not act on the cart and the load, and it can be unloaded or unloaded easily and quickly. Further, since the rotational force of one wheel by the rotational drive source is transmitted to the other wheel by the rotational force transmitting means, even if one wheel passes through the gap between the cargo bed rail and the lift rail, the other wheel These wheels are driven to rotate on the carrier rail or the elevator rail, and the cart can be driven by its rotational force. As a result, even if the carriage passes through the gap between the rails, the driving force in the traveling direction is not interrupted, and even if the carriage passes through the gap, the carriage is moved without giving vibration to the carriage mounted on the carriage. Therefore, the unloading work and the unloading work can be facilitated and speeded up.

  Further, according to the present invention, since the carriage is locked to the lifting platform by the locking means, even if the lifting rail is inclined with respect to the horizontal due to the inclination of the vehicle, the carriage is Inadvertent movement can be prevented and safety can be improved. In addition, since the carriage is locked to the lifting platform by the locking means, the carriage is prevented from moving on the lifting platform regardless of whether the lifting rail is inclined with respect to the horizontal. Can be stably held on the lifting platform, and work on the load can be performed stably.

  FIG. 1 is a horizontal sectional view showing a rear portion 15 of a loading platform 3 of a tire repair work vehicle 2 equipped with a load moving apparatus 1 according to an embodiment of the present invention. FIG. 2 is a tire repair work vehicle including the load moving apparatus 1. It is a side view which shows the external appearance of 2. In the present embodiment, a case will be described in which the load transfer device 1 is implemented in a tire repair work vehicle 2 that is a vehicle in which facilities for tire repair and replacement are mounted on a panel van truck also called a box car.

  For example, tires for large vehicles such as buses, trucks, and special construction vehicles are larger and heavier than ordinary automobile tires, so the tires are removed from the vehicle body and repaired for repairs and replacement. Carrying in takes time and effort. Therefore, the tire repair work vehicle 2 is used to go to a place where a large vehicle is on standby or parked and perform maintenance work such as tire replacement and repair on site.

  Such a tire repair work vehicle 2 is equipped with a load moving device 1. The load moving device 1 includes a loading platform rail 5, a lifting platform 6, a lifting platform 7, a lifting platform rail 8, a carriage 9, a rotational force transmitting unit 10, a traveling driving unit 11, and a locking unit 12. The tire repair work vehicle 2 is a panel van truck as described above, and the carrier rail 5 is laid on the floor 13 of the carrier 3. The cargo bed rail 5 includes a pair of rail members 5a and 5b extending in parallel with the axle.

  The cargo bed 3 includes a cargo box 14 mounted as a frame on the cargo bed frame. The packing box 14 is formed of a box body that is hollow and formed in a substantially rectangular parallelepiped shape, for example, by an aluminum alloy panel, and is long in the axle direction. The rear portion 15 of the packing box 14 is provided with the above-described lifting platform 6 also called a power gate, and an upper door 17 that can be manually opened and closed.

  The lifting platform 6 is displaced up and down over a rising position P1 that is close to the floor 13 of the loading platform 3 and substantially the same height, and a lowering position P2 that is close to the ground 16, and at the lower edge portion of the rear portion 15 of the packing box 14. A closed position that is angularly displaced in the directions of arrows A1 and A2 around an axis L1 perpendicular to the axle on a horizontal virtual plane including the axle, and closes the raised position P1 and the lower region of the opening of the rear portion 15. Move across P3.

  The upper door 17 is provided at the upper edge portion of the rear portion 15 of the cargo box 14 so as to be angularly displaceable in the directions of arrows B1 and B2 around a horizontal axis L2. An angular displacement axis L2 of the upper door 17 is parallel to the angular displacement axis L1 of the lifting platform 6.

  In the loading frame 19 on which the cargo box 14 is mounted, the lifting platform 6 is moved up and down between the lowered position P2 and the raised position P1, and is lifted and lowered by angular displacement between the raised position P1 and the closed position P3. Driving means 7 is provided. The elevating drive means 7 is realized by a hydraulic pump unit, for example.

  A lift rail 8 is laid on the lift 6. The elevator rail 8 is composed of a pair of rail members 8a and 8b parallel to the axle, and is welded and laid in parallel to the mounting surface 20 facing the upper side of the elevator 6 at the raised position P1 and the lowered position P2. The end portions 21a and 21b of the rail members 8a and 8b of the lift rail 8 that are disposed near the loading platform 3 are located close to the lift platform 6 of the loading platform rail 5 in a state where the lifting platform 6 is disposed at the raised position P1. It arrange | positions facing the edge parts 22a and 22b to arrange | position. The rail members 8a and 8b of the lift rail 8 are respectively provided on the extension lines of the rail members 5a and 5b of the load carrier rail 5 in a state where the lift 6 is disposed at the raised position P1.

  The end portions 21a, 21b of the rail members 8a, 8b of the lifting platform rail 8 near the loading platform 3 and the end portions 22a, 22b of the rail members 5a, 5b of the loading platform rail 5 near the lifting platform 6 are lifted and lowered. In a state where the platform 6 is arranged at the raised position P1, when the elevator table 6 is arranged in the section from the raised position P1 to the closed position P3, the gap 6 is separated with a gap δ that can avoid interference. The gap δ is such that the end portions 21a and 21b of the lifting platform rail 8 of the lifting platform 6 can be prevented from contacting and interfering with the end portions 22a and 22b of the loading platform rail 5 of the loading platform 3 during the lifting and lowering. For example, it is selected from 10 mm to 30 mm.

  The carriage 9 includes a base 25 made of a rectangular steel plate, and wheels provided on both sides of the traveling directions C1 and C2 and both sides of the left and right directions D1 and D2 along the cargo bed rail 5 and the lift rail 8 of the base 25. Assembly 26a, 26b; 27a, 27b.

  FIG. 3 is a cross-sectional view showing the configuration of the wheel assembly 26 b, and FIG. 4 is a cross-sectional view showing the configuration of the travel drive means 11. 3 shows a cross section viewed from the cutting plane line III-III in FIG. 1, and FIG. 4 shows a cross section viewed from the cutting plane line IV-IV in FIG. Each wheel assembly 26a, 26b; 27a, 27b is constituted by a plurality of frame members made of a shape steel such as a shape steel, and is fixed to the lower surfaces of the front, rear, left and right corners of the base 25 by welding or the like. 29, a pair of bearings 32a and 32b fixed to the bracket 29 with bolts 31 at intervals in the running directions C1 and C2, and a pair of wheels 30a and 30b respectively supported by the bearings 32a and 32b. Have

  Among the wheel assemblies 26a, 26b; 27a, 27b, the wheel assemblies 26a, 26b provided at least on the downstream side in the traveling direction C1 of the base 25 and on the left and right sides are provided with the rotational force of each pair of wheels 30a, 30b. Rotational force transmitting means 10 for transmitting the two to each other is provided.

  Each rotational force transmission means 10 is a sprocket wheel fixed between the wheels 30a, 30b and the bearings 32a, 32b on the shafts 37a, 37b of the wheels 30a, 30b supported by the bearings 32a, 32b. 38a, 38b, and an endless chain 39 wound around each sprocket wheel 38a, 38b.

  In the present embodiment, the rotational force transmitting means 10 is provided on the wheel assemblies 26a and 26b arranged on the downstream side in the traveling direction C1 from the lifting platform 6 toward the loading platform 3, but in other embodiments of the present invention, The wheel assemblies 26a and 26b on the downstream side in the traveling direction C1 are not provided, but only on the wheel assemblies 27a and 27b arranged on the upstream side in the traveling direction C1 from the loading platform 3 toward the lifting platform 6 (that is, on the downstream side in the traveling direction C2). It may be provided, and may be provided in all the wheel assemblies 26a, 26b; 27a, 27b on the upstream side and the downstream side in the traveling direction C1.

  The carriage 9 is provided with the traveling drive means 11. The travel drive means 11 includes a connecting shaft 40 having both ends in the axial direction connected to the shafts 37a of the wheels 30a of the one wheel assemblies 26a, 26b, and a substantially central portion in the axial direction of the connecting shaft 40. A first gear 41 to be fixed, an electric motor 43 having an output shaft 42 inserted through the base 25 in its thickness direction, and a portion protruding downward from the base 25 of the output shaft 42 of the electric motor 43 are fixed, And a second gear 44 meshing with the first gear 41.

  The electric motor 43 has the output shaft 42 below the output shaft 42 at the center of one side near the loading platform 3 in the traveling direction C1 downstream of the base 25 of the carriage 9, that is, in a state where the lifting platform 6 is disposed at the raised position P1. In the state where the installation space is secured so that the load W can be stably mounted on the base 25, and the lifting platform 6 is arranged at the lowered position P2, the tire is lifted and lowered to the cart 9 A working space for tire repairs is secured.

  Such traveling drive means 11 is disposed downstream of the pair of wheels 30a, 30b provided in each wheel assembly 26a, 26b; 27a, 27b in the traveling direction C2 from the lifting platform 6 toward the loading platform 3. Each one wheel 30a is rotationally driven, and the cart 9 is self-propelled in the traveling direction C1 from the lifting platform 6 to the loading platform 3 when unloading along the loading platform rail 5 and the lifting platform rail 8 and unloading. Occasionally, the self-propelled traveling direction C2 from the loading platform 3 toward the lifting platform 6 reduces the labor required for the operator to move the load W without moving the cart 9 by himself / herself. 9 can be easily moved.

  FIG. 5 is a perspective view showing the configuration of the locking means 12. Referring also to FIG. 4 described above, a carriage 9 is locked on the lifting platform 6 to one side of the lateral sides D1 and D2 of the base 25 to move in the traveling directions C1 and C2. Locking means 12 is provided to prevent the displacement. The locking means 12 includes a movable member 51 fixed to one side portion 50 of the base 25, and a fixture that is fixed on a moving path along which the movable member 51 moves by traveling in the traveling directions C1 and C2 of the carriage 9. 52 and a locking bolt 53 that locks the movable member 51 to the fixture 52.

  The movable member 51 is made of a plate-shaped steel plate, and protrudes outward from the base 25 beyond the upper side of one rail member 8a of the lift rail 8. The moving path of the movable member 51 is parallel to the one rail 8a, and the lower surface of the movable member 51 and the upper surface of the one rail 8a are separated from each other with a slight distance ΔL1, for example, about 5 mm to 20 mm. ing.

  The fixture 52 includes a flat base member 54 that is mounted on the floor of the elevator platform 6, an adjustment member 55 that is mounted on the base member 54, and a locking member 56 that is mounted on the adjustment member 55. The base member 54, the adjustment member 55, and the locking member 56 include a rivet 57 that fixes the floor 23 of the lifting platform 6. The floor 23 of the lifting platform 6 is realized by a deck plate such as a striped steel plate.

  The base member 54 is made of a steel plate having a rectangular planar shape. The adjustment member 55 is shorter than the base member 54 and is made of a steel plate having a rectangular planar shape, and is disposed near one end in the longitudinal direction on the upstream side in the traveling direction C1 of the base member 54. It is provided as a spacer for adjusting the position. Here, the said planar shape is a shape when it sees from upper direction in the state in which the fixing tool was attached to the raising / lowering stand 6. FIG.

  The locking member 56 includes a stacking portion 58 that is mounted on the adjustment member 55, a bending portion 59 that is bent at a right angle to one side portion of the stacking portion 58, and a right angle to the upper end portion of the bending portion 59. It has the latching | locking part 60 bent and connected to. A bolt insertion hole 61 through which the shaft portion of the locking bolt 53 is inserted is formed through the locking portion 60 in the thickness direction, and the base member 54, the adjustment member 55, and the locking member 56 run in the longitudinal direction. They are stacked in parallel with C1 and C2, and fixed to the floor 23 of the lifting platform 6 by rivets 57.

  In a state where the fixture 52 is fixed to the floor 23 of the lifting platform 6, the locking portion 60 of the locking member 56 and the base member 54 face each other while being spaced apart from each other in the vertical direction. A recess 62 that is open on the moving path of the movable member 51 is formed facing the traveling direction C <b> 2. In this recess 62, when the carriage 9 moves in the traveling direction C2 from the loading platform 3 to the lifting platform 6 and the carriage 9 completely transfers onto the lifting platform 6, the locking member 56 is shown in FIG. Thus, it partially fits in the recess 62, and the movement of the carriage 9 in the traveling direction C2 is prevented. In this state, the movable member 51 is fixed by inserting the locking bolt 53 through the bolt insertion hole 61 of the locking member 56 and the bolt insertion hole 64 of the movable member and screwing into the screw hole 63 of the base member 54. It is connected to the tool 52, the movement of the carriage 9 in the traveling directions C1 and C2 is blocked, and the carriage 9 is locked to the lifting platform 6.

  Next, the operation of the load moving apparatus 1 will be described. First, the tire repair work vehicle 2 arrives at the site and the tire replacement work is started for puncture repair of a large vehicle such as a bus or a truck. On the loading platform 3 of the tire repair work vehicle 2, a tire changing device is mounted as a load W on the carriage 9. Since the punctured tire has a large diameter and a large weight, it takes time and labor to lift and lower the load to the loading platform 3 by human power. Therefore, by moving the load W, which is a tire changing device, to the vicinity of the ground 16, the tire can be moved. Since the labor and time required can be significantly reduced, the load W is unloaded.

  In order to unload the load W from the loading platform 3 of the tire repair work vehicle 2, the operator manually opens the upper door 17 by angular displacement in the direction of the arrow B1 and opens the lifting platform 6 in the closed position P3. It is angularly displaced in the A1 direction and arranged at the raised position P1. When the lift rail 8 is thus placed on the extension of the load rail 5, the cart 9 loaded with the load W is then moved from the load platform 3 onto the lift platform 6.

  At this time, the carriage 9 passes through the gap δ between the loading platform rail 5 and the lifting platform rail 8, but each wheel assembly 26 a, 26 b; 27 a, 27 b of the carriage 9 has a pair of wheels 30 a, 30 b. Therefore, the wheels 30a, 30b of the wheel assemblies 26a, 26b; 27a, 27b are prevented from falling into the gap δ. That is, when the carriage 9 moves in the traveling direction C2, when the other wheel 30b disposed on the downstream side in the traveling direction C2 of each pair of wheels 30a and 30b passes through the gap δ, one wheel on the upstream side in the traveling direction C2 30a exists on the carrier rail 5.

  Further, when the carriage 9 moves in the traveling direction C2 and one wheel 30a on the upstream side in the traveling direction C2 of each pair of wheels 30a and 30b passes through the gap δ, the other wheel 30b on the downstream side in the traveling direction C2 moves up and down. Present on the base rail 8. Therefore, even if each wheel assembly 26a, 26b; 27a, 27b passes through the gap δ between the loading platform rail 5 and the lifting platform rail 8, any one of the pair of wheels 30a, 30b is either the loading platform rail 5 or the lifting / lowering rail. It is in a state of being supported by the platform rail 8 and can be smoothly moved from the platform 3 to the lift platform 6 in a short time without giving large vibrations to the cart 9 and the load W. The same applies to the case where the carriage 9 moves in the traveling direction C1 and returns from the lifting platform 6 to the loading platform 3.

  Of the plurality of wheel assemblies 26a, 26b; 27a, 27b, the wheel assemblies 26a, 26b provided on the downstream side in the traveling direction C1 of the base 25 and on both the left and right sides are respectively connected to the wheels 30a by the rotational force transmitting means 10. , 30b are transmitted to each other, and one of the wheels 30a is rotationally driven by the rotational drive source 11.

  Since the rotational force transmitting means 10 transmits the rotation of the wheels 30a and 30b of the wheel assemblies 26a and 26b, the wheel assemblies 26a and 26b pass through the gap δ between the cargo bed rail 5 and the lift rail 8. Of the pair of wheels 30a, 30b of each wheel assembly 26a, 26b, even if one wheel 30b is passing through the gap δ, the other wheel 30a travels on the loading platform rail 5, The rotational force of the other wheel 30a is transmitted to the one wheel 30b by the rotational force transmitting means 10, and when the one wheel 30b passes through the gap δ and changes to the lifting platform rail 8, the one wheel 30b moves up and down. It is possible to prevent a sudden braking force from acting on the carriage 9 due to the frictional resistance received from the carriage 8 and decelerating. The same applies to the case where the carriage 9 is moved in the traveling direction C1 and returned from the lifting platform 6 to the loading platform 3.

  Since the rotation of the wheels 30a and 30b is transmitted by the rotational force transmitting means 10 in this way, the disturbance of the speed in the traveling directions C1 and C2 due to the carriage 9 passing through the gap δ is reduced, and the running stability of the carriage 9 is stabilized. The load W can be stably and quickly moved, the time required for unloading and unloading can be shortened, and the speed can be increased.

  In the wheel assemblies 26a and 26b to which the rotational force of the wheels 30a and 30b is transmitted by the rotational force transmitting means 10, each of the wheels 30a is rotationally driven by the rotational drive source 11, and the rotational force is the rotational force. It is transmitted to each other wheel 30a, 30b by the transmission means 10. As a result, the cart 9 loaded with the load W is self-propelled from the platform rail 5 to the lifting platform rail 8 and easily moves the cart 9 regardless of human power, facilitating and speeding up the unloading and unloading operations. Can be achieved.

  The carriage 6 that has moved onto the lifting platform 6 is prevented from moving on the lifting platform 6 by the locking means 12. As a result, even when the tire repair work vehicle 2 is in a state where the tire repair work vehicle 2 is tilted with respect to the horizontal due to road surface undulation or road surface inclination, the cart 9 is prevented from moving undesirably on the lifting platform 6. The safety is improved.

  The load W on the carriage 9 that has moved onto the lift 6 is lowered to the lowered position P2 by lowering the lift 6 from the raised position P1 to the lowered position P2 by the lifting drive means 7. The lowered position P2 is a height position at which the lifting platform 6 comes into contact with the ground 16. However, when the lifting platform 6 cannot be lowered to the lower limit due to undulations or steps of the ground 16, the lifting platform 6 is brought to the ground 16. It may be stopped at a height position immediately before contact, or may be an intermediate height position between the raised position P1 and the lower limit position in contact with the ground 16.

  Even in the state where the lifting platform 6 is disposed at the lowered position P2, the carriage 9 is locked by the locking means 12, so that the load W on the carriage 9 can be used for operations during tire repair work and other objects such as tires. Even if the contact force or the pressing force is applied, the carriage 9 is prevented from moving on the elevator platform 6 and the load W mounted on the carriage 9 is prevented from being moved carelessly. Is improved.

  In this way, the tire is repaired in the state where the load W is lowered to the lowered position P2, and when the work is completed, in order to return the load W from the lowered position P2 to the loading platform 3, the lifting / lowering arranged at the lowered position P2 is performed. The cargo W mounted on the cart 9 is unloaded on the platform 6. In this case, contrary to the above-described unloading, since the lifting platform 6 is disposed at the lowered position P2, the lifting platform 6 raises the lifting platform 6 from the lowered position P2 to the raised position P1. At this time, since the end portions 21a and 21b of the lifting platform rail 8 are separated from the end portions 22a and 22b of the loading platform rail 5 with a gap δ, the lifting platform rail 8 and the loading platform rail 5 interfere with each other. There is nothing.

  The load W on the lifting platform 6 disposed at the raised position P1 is carried into the loading platform 3 by moving the carriage 9 in the traveling direction C1 and moving it from the lifting platform rail 8 onto the loading platform rail 5. Even when the load W is moved to the loading platform 3, each wheel assembly 26 a, 26 b; one wheel 30 a or 30 b of each of the wheel assemblies 26 a, 27 b has a gap δ between the lifting platform rail 8 and the loading platform rail 5. Therefore, it is possible to move the cargo W quickly and stably from the lifting platform 6 to the loading platform 3 and unload it without giving vibration to the loading W on the cart 9. it can.

  In the above-described embodiment, the configuration in which the cart 9 is provided with the rotational force transmitting means 10 in the wheel assemblies 26a and 26b on the downstream side in the traveling direction C1 has been described. However, in the other embodiments of the present invention, the upstream in the traveling direction C1 is described. The rotational force transmission means 10 may be provided in the wheel assemblies 27a and 27b on the side, or may be provided in all the wheel assemblies 26a and 26b; 27a and 27b.

  Further, in the above-described embodiment, the configuration in which one wheel 30a of each wheel assembly 26a, 26b on the downstream side in the traveling direction C1 is rotationally driven by the traveling drive unit 11 has been described. However, in another embodiment of the present invention, The other wheels 30b of the wheel assemblies 26a and 26b may be rotationally driven by the travel drive means 11.

  In the above-described embodiment, the case where a tire changing device called a tire changer for tire repair and replacement is mounted as the load W has been described. However, in another embodiment of the present invention, the load W is taken out of the vehicle. Various devices to be used, for example, various devices such as a wheel balancer, a generator, and a compressor may be used.

  In the above-described embodiment, the case where the load moving device is mounted on a tire repair work vehicle realized by a panel van truck, also called a box car, is described as a vehicle. However, in another embodiment of the present invention, a trailer vehicle is provided. The loading platform according to the present invention may be implemented in the loading platform.

It is a horizontal sectional view showing rear part 15 of tire repair work vehicle 2 equipped with load movement apparatus 1 of an embodiment of the invention. 2 is a side view showing an appearance of a tire repair work vehicle 2. FIG. It is sectional drawing of the wheel assembly 26b seen from the cut surface line III-III of FIG. It is sectional drawing of the traveling drive means 11 seen from the cut surface line IV-IV of FIG. It is a perspective view which shows the structure of the latching means 12. FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Load moving apparatus 2 Tire repair work vehicle 5 Loading platform rail 6 Lifting platform 7 Lifting drive means 8 Lifting platform rail 9 Cart 10 Rotational force transmission means 11 Traveling drive means 12 Locking means 13 Floor of loading platform 3 15 Tire repair work vehicle 2 Rear part 5a, 5b; 8a, 8b Rail member 14 Cargo box 17 Upper door 16 Ground 19 Cargo frame 20 Loading surface 21a, 21b Ends 22a, 22b of rail members 8a, 8b End 25 of rail members 5a, 5b 26a, 26b; 27a, 27b Wheel assembly 30a, 30b Wheel 32a, 32b Bearing 38a, 38b Sprocket wheel 39 Chain 40 Connection shaft 41 First gear 43 Electric motor 44 Second gear 51 Movable member 52 Fixing tool 53 Locking bolt 54 Base Member 55 Adjustment member 56 Locking member 57 Rivet 58 Stacked part 59 Bent part 0 engaging portion 62 recess C1, C2 traveling direction L1, L2 axis P1 raised position P2 lowered position P3 closed position W cargo δ gap

Claims (3)

A plurality of carrier rails laid on the floor of the vehicle carrier;
A lifting platform that is provided in the vehicle and is moved up and down over a rising position that is close to the floor of the loading platform and substantially the same height, and a predetermined lowering position;
Elevating drive means for elevating and driving the elevating platform over the ascending position and the descending position;
An end portion that is laid on the mounting surface facing the upper side of the lifting platform and is disposed near the loading platform, and an end portion that is disposed near the lifting platform of the loading platform rail in a state where the lifting platform is disposed at the raised position. A plurality of elevator rails arranged opposite to each other,
A wheel assembly including a pair of wheels spaced apart in the traveling direction along the loading platform rail and the lifting platform rail is provided on each of the traveling direction both sides and the left and right sides of the base on which the load is mounted; A load moving device comprising:   Provided in a wheel assembly provided on at least one side of the base in the traveling direction and on both the left and right sides, a rotational force transmitting means for mutually transmitting the rotational force of each pair of wheels, and provided on the base, each of the pair The load moving device according to claim 1, further comprising travel driving means for rotationally driving one of the wheels.   The load moving apparatus according to claim 1, further comprising a locking unit that locks the carriage to the lifting platform.

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