JP5206035B2 - Conveyor vehicle travel device corresponding to inclined path - Google Patents

Description

  BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transport vehicle traveling device corresponding to an inclined path used for transporting articles in a factory or a warehouse, and more specifically, a traveling track rail having a horizontal portion and an inclined portion installed on a ceiling or the like. It is related with the conveyance vehicle travel apparatus corresponding to the inclination path | route provided with the conveyance vehicle guided by.

2. Description of the Related Art Conventionally, as a transport vehicle travel device, a transport vehicle with drive wheels that travel while being guided by a travel track rail is used to suspend and transport a transported body. In such a transport vehicle travel device, the transport vehicle travels on the travel track rail by the frictional force generated on the contact surface between the drive wheel of the transport vehicle and the travel track rail. Therefore, when an inclined traveling part is provided on the traveling track rail, slipping occurs between the driving wheel on the transport carriage side and the traveling track rail during uphill traveling or downhill traveling, and the transportation cart becomes unable to travel uphill. When driving downhill, there was a risk of runaway exceeding the safe speed.
Also, when traveling on the rail sloped part in the factory, if oil or the like when machining the machine parts adheres to the wheel running surface of the rail and the outer peripheral surface of the wheel, the wheel of the transport vehicle slips against the wheel tread of the rail. It will be.

  Therefore, a large number of irregularities are provided on the wheel surface of the rail, and the surface portion of the wheel of the transport vehicle is made of an elastic material, or a perforated plate is fixed to the wheel tread surface of the rail, and the surface portion of the wheel of the transport vehicle is made of an elastic material. Or a transporting vehicle traveling device (see, for example, Patent Document 1) in which a synthetic resin plate having irregularities is fixed to a wheel tread surface of a rail and a surface portion of a wheel of the transporting vehicle is made of an elastic material. A traveling track rail for a transport carriage in which a fine uneven surface is formed by spraying a powder mainly composed of the same metal as the material constituting the traveling track rail, at least on an inclined traveling portion of a traveling surface in contact with a vehicle wheel (for example, (See Patent Document 2).

  In Patent Document 1, the surface portion of the elastic material of the wheel can be eaten into a large number of recesses or recesses in the unevenness, or can be eaten into a large number of holes or recesses in the perforated plate, and therefore conveyed in an oil mist atmosphere. Even if a vehicle traveling device is used, or if there is condensation on the uneven surface of the rail or the surface of the perforated plate, the surface of the wheel of the transport vehicle will not slip on the uneven surface or the perforated plate. By means, slipping of the wheels of the transport vehicle can be prevented.

  Moreover, the thing of the patent document 2 can operate a conveyance vehicle safely, without the friction coefficient between the drive wheel of a conveyance vehicle and a driving track rail becoming high, and a drive wheel slipping also in an inclined part. In addition, even when inclusions such as water and oil are present on the wheel running surface, these inclusions are quickly discharged, and the occurrence of slip is extremely effectively suppressed.

  However, the thing of patent document 1 provides many unevenness | corrugations in the wheel running surface of a rail, and when the surface part of the wheel of a conveyance vehicle is comprised with an elastic material, and the synthetic resin board which has an unevenness | corrugation in the wheel running surface of a rail When the surface portion of the wheel of the transport vehicle is made of an elastic material, the load concentrates on the uneven crest, so that the elastic material on the surface portion of the wheel is scraped by this mountain, When the perforated plate is fixed to the wheel running surface of the rail, and the surface portion of the wheel of the transport vehicle is made of an elastic material, in order to cause many holes in the perforated plate to bite into the elastic material of the wheel surface portion, When the elastic material is significantly consumed, the life of the driving wheel is shortened, and it cannot be stably used for a long time as a transport vehicle traveling device corresponding to an inclined path.

  Furthermore, in the case of Patent Document 2, when the drive wheel slides on the inclined portion, the load is concentrated on the minute uneven peak, so that the drive wheel is shaved by this peak, and the life of the drive wheel becomes short. It has not been able to be used stably for a long time as a transport vehicle traveling device corresponding to an inclined path.

JP-A-6-305416 JP 2004-257186 A

  Therefore, the present invention intends to solve the problem that the conveyance vehicle is self-propelled on the inclined portion provided on the rail without providing a device dedicated to the vertical movement of the conveyance vehicle in the conveyance path where the conveyance object needs to be moved up and down. By moving up and down, it is possible to simplify and save space as a whole of the transport vehicle traveling device, and the wheels corresponding to the inclined path that does not wear out the wheels and reduces the maintenance work. It is in providing a vehicle traveling device.

In order to solve the above-described problems, a transport vehicle traveling device corresponding to an inclined path according to the present invention is a self-propelled transport that travels on a rail having an inclined portion and wheels mounted on a wheel traveling surface on the rail. A transport vehicle traveling device corresponding to an inclined path formed by a car, wherein a slope and a trough extending in the rail longitudinal direction are alternately and continuously arranged in a rail width direction on an inclined traveling surface that is a wheel traveling surface of the inclined portion. A plurality of crests and troughs extending in the circumferential direction are formed on the outer peripheral surface of the wheel in a shape that engages with the inclined traveling surface, and a plurality of crests and troughs are formed in the wheel width direction. An outer flat part that forms the same outer peripheral surface as the top of the peak part of the wheel is provided on the outer side of the peak part and the valley part, and the peak part and the valley of the inclined running surface in the width direction of the rail. The bottom of the valley portion of the inclined running surface is substantially outside the portion. Characterized by comprising providing a flat surface having an height.

  Here, a plurality of ridges extending in the rail longitudinal direction are connected to the inclined running surface in a substantially inverted V shape in a cross-sectional view perpendicular to the traveling direction, thereby forming the peaks and valleys. In addition, it is preferable that a plurality of substantially V-shaped fitting grooves extending in the circumferential direction are continuously provided on the outer peripheral surface of the wheel so as to form the peak portion and the valley portion.

  Furthermore, it is preferable that at least one of the inclined running surface or the outer peripheral surface is formed of an elastic body.

  Furthermore, it is preferable that the top of the peak portion of the wheel is formed so as not to contact the rail when traveling on the inclined portion.

According to the carrier traveling device corresponding to the inclined path according to the present invention, since the wheel is supported by the crest and trough of the wheel traveling surface, the mountain is more than the case where the outer peripheral surface of the wheel is supported by a horizontal surface. The force with which the outer circumferential surface of the wheel is pressed against the wheel running surface is increased by the amount of horizontal force generated by the inclined surfaces of the part and the valley. As a result, since the frictional force between the wheel running surface of the inclined portion and the wheel increases, the wheel is less likely to slip on the wheel running surface of the inclined portion, and the conveyed product can be stably conveyed.
In addition, it is not necessary to provide a device dedicated to the vertical movement of the transport vehicle on the rail even in a transport route in which the product to be transported needs to be moved up and down, and the entire transport device can be simplified and saved in space.
Furthermore, in the width direction of the wheel, an outer flat portion that forms the same outer peripheral surface as the top of the peak portion of the wheel is provided outside the peak portion and valley portion of the wheel, and the width direction of the rail. In this case, when a flat surface having substantially the same height as the bottom of the valley portion of the inclined traveling surface is provided outside the peak portion and valley portion of the inclined traveling surface, the mountain of the wheel when traveling in the horizontal portion is provided. The wear at the top of the part can be reduced, and also when the vehicle runs on the left and right curve in the horizontal part, the uneven wear on the outer peripheral surface of the wheel can be reduced.

  Furthermore, a plurality of ridges extending in the rail width direction are provided on the inclined running surface in a substantially inverted V shape in a cross-sectional view perpendicular to the traveling direction, and the ridges and valleys are formed. When the ridges and valleys are formed by connecting a plurality of substantially V-shaped fitting grooves extending in the circumferential direction to the outer peripheral surface of the wheel to form the ridges and valleys, the wedge effect is obtained. As a result, the frictional force between the wheel running surface and the wheel increases, so that the wheel is less likely to slip on the wheel running surface of the inclined portion, and the conveyed product can be stably conveyed.

  In addition, when at least one of the inclined running surface or the outer peripheral surface is formed of an elastic body, the elastic body is relatively easily deformed by an external force, so that the frictional force with the other pressed against the elastic body is large. Therefore, the outer peripheral surface is less likely to slip on the inclined traveling surface, and the vehicle can travel even with a steep inclination.

Furthermore, when the slope is formed so that the top of the crest of the wheel does not come into contact with the rail when traveling, when dust or liquid adheres to the inclined traveling surface, the slope travels. It collects at the bottom of the valley of the surface or flows through the bottom of the valley below the inclined portion, but the wheel travels on the inclined portion without contacting the bottom of the valley, so that dust, liquid, etc. Can prevent slipping.
In addition, since the top of the crest of the wheel that is nearly horizontal does not contact the rail and generates a greater horizontal force, the frictional force is increased, resulting in stable running on the inclined portion.

  Next, embodiments of the present invention will be described 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. .

  1-5 is explanatory drawing which shows the structure of the conveyance vehicle traveling apparatus corresponding to the inclination path | route which concerns on this embodiment, FIG. 1 is a front view which shows the state which the self-propelled conveyance vehicle is drive | working an inclination part. 2 is a plan view showing the configuration of the front traveling vehicle, FIG. 3 is a right side view showing the configuration of the front traveling vehicle, FIG. 4 is a longitudinal sectional view showing the configuration of the wheels and rails in the inclined portion, and FIG. FIG. 6 is a cross-sectional view illustrating a configuration of a rail of a transport vehicle traveling device corresponding to an inclined path according to another embodiment.

As shown in FIG. 1, a transport vehicle traveling device 1 corresponding to an inclined path according to an embodiment of the present invention is a wheel located on the upper surface of an I-shaped rail 2 having a horizontal portion (not shown) and an inclined portion 2A. When the self-propelled conveyance vehicle 3 including the front traveling unit 11 having the driving wheel 41 that rotates by the driving device 10 and the rear traveling unit 12 having the traveling wheel 42 self-travels the traveling surface 5, A to-be-conveyed body can be conveyed. On the inclined running surface 5a, a plurality of ridges 6 each having a trapezoidal shape whose upper side is shorter than the lower side in the vertical cross-sectional view in the traveling direction are formed with a certain width apart in the width direction of the rail 2 to thereby incline peaks and valleys. A plurality of protrusions 6 are engaged with the outer peripheral surface 4A of the corresponding wheel 4 formed on the traveling surface 5a, and the upper side is a trapezoid whose upper side is longer than the lower side in a vertical sectional view and extends in the circumferential direction. A plurality of joint grooves 7 are formed in the width direction of the wheel 4. During traveling of the inclined portion 2A, the plurality of protrusions 6 are fitted into the fitting grooves 7 formed on the outer peripheral surface 4A of the wheel 4 (the driving wheel 41 and the traveling wheel 42), and along the inclined portion 2A rail 2. Can move up and down.
The rail 2 in the illustrated embodiment is integrally formed of metal, but is not limited thereto, and may be formed of an elastic body such as synthetic rubber, and the manufacturing method is another method. Also good. For example, as shown in FIG. 6, the engaging portion of the inclined portion 2A with the wheel 4 of the rail 2 is configured as a separate belt-like member 2a formed of an elastic body such as synthetic rubber, and is fixed to the upper surface of the rail body. It is good also as a structure to do. Thus, if it shape | molds by elastic bodies, such as a synthetic rubber, since it will become easy to deform | transform when the wheel 4 is press-contacted to the wheel running surface 5, the outer peripheral surface 4A of the wheel 4, the wheel running surface 5 of the rail 2, and As a result, the wheel 4 can be made less slippery on the rail 2 when the self-propelled transport vehicle 3 travels on the inclined portion 2A.

  The self-propelled transport vehicle 3 suspends a mounting plate on which a transported body is mounted by a hanger member 31 to be a mounting portion, and fixes a front end portion and a rear end portion of the hanger member 31 to a connecting bar 32. The front running portion 11 that self-runs by the driving device 10 and the driving wheel 41 is fixed to the front side of the connecting bar 32 at the front end portion of the hanger member, and the rear side of the hanger member rear end portion is fixed. It can be self-propelled by being fixed to the rear traveling unit 12 provided with the traveling wheels 42. Further, upper guide rollers 13 (each side of each side) slide on the upper left and right sides of the I-shaped rail 2 so that the transported body does not swing in the horizontal direction due to the loading / unloading work of the transported body or running of the curve. 2 and a total of 4 on both sides) and a lower guide roller 14 (two on each side, 4 on each side) sliding on the lower left and right sides, respectively.

As shown in FIGS. 2 and 3, the front traveling unit 11 is placed on the rail 2 such that the fitting grooves 7 of the wheels 4 are engaged with the plurality of protrusions 6 of the rail 2.
The front traveling unit 11 is provided with a driving device 10, and power is transmitted from the driving device to the driving wheel 41 via the driving shaft, the orthogonal gear, and the wheel shaft 10 a. Since the weight of the to-be-conveyed body and the self-propelled transport vehicle 3 is supported by the wheels 4, the wheels 4 are pressed against the wheel travel surface 5 with a considerable force. Thereby, a large frictional force is generated, and the wheel 4 can move forward and backward by the power of the driving device 10 without sliding on the wheel running surface 5 even in the horizontal portion.

  The rear traveling unit 12 does not include the driving device 10, but the other configurations are the same as those of the front traveling unit 11.

As shown in FIG. 4, the wheel 4 is formed with a plurality of fitting grooves 7 shaped to engage with the protrusions 6 of the rail 2 on the outer peripheral surface 4 </ b> A of the wheel 4 that is pivotally supported by the axle, and both sides thereof in the width direction. The outer flat portions 9 and 9 that do not have the fitting groove 7 are formed in the portion, and the fitting groove 7 of the outer peripheral surface 4A of the wheel 4 engages with the protrusion 6 of the rail 2 when the inclined portion 2A travels. Since the rail 2 does not have the protrusions 6 when traveling on the horizontal portion, the top between the outer flat portions 9 and 9 of the outer peripheral surface 4A of the wheel 4 and the fitting groove 7 is the rail. 2 is in contact with the wheel running surface 5 and runs.
Thereby, the contact area of the rail 2 and the wheel 4 at the time of horizontal part driving | running | working can be enlarged, and durability of the wheel running surface 5 of the wheel 4 and the rail 2 can be improved. Further, uneven wear on the outer peripheral surface 4A of the wheel 4 during curve traveling in the horizontal portion of the rail 2 can be reduced, and maintenance and other work can be reduced during long-term use.
Moreover, the wheel 4 was press-contacted to the wheel running surface 5 by forming the whole wheel 4 or a part thereof, for example, the engaging portion of the rail 2 and the wheel running surface 5 with an elastic body such as synthetic resin or urethane rubber. Since it tends to be easily deformed, the coefficient of friction between the outer peripheral surface 4A of the wheel 4 and the wheel traveling surface 5 of the rail 2 is increased. As a result, the self-propelled transport vehicle 3 travels more easily when the inclined portion 2A travels. The wheel 4 can be made difficult to slide on the rail 2.

When moving from the horizontal portion of the rail 2 to the inclined portion 2A, the front traveling portion 11 and the rear traveling portion 12 are positioned by the upper and lower guide rollers 13, 14 on the left and right with respect to the traveling direction. The plurality of fitting grooves 7 of the wheel 4 are fitted into the plurality of protrusions 6 on the traveling surface 5a, and can be easily moved without particularly performing a moving operation.
Further, when moving to the inclined portion 2A, even when the left and right positions in the traveling direction of the wheel 4 on the wheel traveling surface 5 are slightly shifted, the fitting groove 7 in which the protrusion 6 of the inclined traveling surface 5a is scheduled to be fitted. If the top of the ridge 6 is engaged with the fitting groove forming slope 8 that forms the shape, the fitting groove forming slope 8 causes the ridge 6 to fit into a predetermined position, and the front and rear running portions 11. , 12 can travel on the rail inclined portion 2A without any problem.
During the traveling of the inclined portion 2A, the rail 2 is inclined either up or down in the front-rear direction, but in the fitting groove 7 formed on the outer peripheral surface 4A of the wheel 4 in a vertical sectional view in the traveling direction of the rail 2. The upper side engages with the ridge 6 having a trapezoidal shape with a short side, and the wedge effect increases the frictional force between the wheel 4 and the rail 2 so that the inclination can be raised and lowered.

  Further, since the tops of the fitting grooves 7 and the tops of the ridges 6 are formed so as not to come into contact with each other, all the loads of the transported body and the self-propelled transport vehicle 3 are applied to the inclined surfaces of the ridges 6. A large frictional force due to the wedge effect is obtained, making it difficult to slip. In addition, when dust or oil adheres to the wheel running surface 5 of the rail 2 or the outer peripheral surface 4A of the wheel 4 during use, they accumulate or are at the lowermost part between the ridges 6 flowing downward of the inclined portion 2A. Since the tops between the fitting grooves 7 are not in contact with each other, they can be stably transported without being affected by the dust and the like. While being able to be stabilized, durability of the wheel 4 and the wheel running surface 5 can be improved.

In the embodiment, the protrusion 6 has a substantially trapezoidal shape in a vertical sectional view and does not contact the wheel 4 at the top and the valley, but the rail 2 may be engaged with the entire outer peripheral surface 4A. The shapes of the tops between the fitting grooves 7 and the tops of the protrusions 6 are not limited to those shown in the figure, and may be, for example, arcuate.
Further, the driving device 10 is not limited to the illustrated one, and may be provided only in both the front traveling unit 11 and the rear traveling unit 12 or only in the rear traveling unit 12. By providing the driving device 10 in both the front traveling unit 11 and the rear traveling unit 12, the weights of the transported body and the self-propelled transport vehicle 3 on the front traveling unit 11 are compared particularly when climbing the inclined portion 2A. Even when the frictional force between the wheel 4 of the front traveling unit 11 and the rail 2 becomes small, the weight of the conveyed object and the self-propelled conveyance vehicle 3 is relatively large, and the frictional force with the rail 2 is large. Since the wheel 4 of the rear side running part 12 to be driven is driven, it can be made more stable.
In the description of the present embodiment, the traveling direction of the self-propelled transport vehicle (the direction from the rear traveling unit to the front traveling unit) is defined as the front, and the front direction is defined as the left-right direction.

The front view which shows the inclination part traveling state of the self-propelled conveyance vehicle in the conveyance vehicle traveling apparatus corresponding to the inclination path | route which concerns on this embodiment. The top view which shows the structure of the front side traveling vehicle of the conveyance vehicle traveling apparatus corresponding to the inclination path | route which concerns on this embodiment. The right view which shows the structure of the front side traveling vehicle of the conveyance vehicle traveling apparatus corresponding to the inclination path | route which concerns on this embodiment. The longitudinal cross-sectional view which shows the structure of the wheel and rail in the inclination part of the conveyance vehicle traveling apparatus corresponding to the inclination path | route which concerns on this embodiment. The perspective view which shows the structure of the wheel of the conveyance vehicle travel apparatus corresponding to the inclination path | route which concerns on this embodiment. Sectional drawing which shows the structure of the rail of the conveyance vehicle traveling apparatus corresponding to the inclination path | route which concerns on other embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Conveyor vehicle travel apparatus 2 Rail 2A Inclined part 2a Separate belt-shaped member 3 Self-propelled conveyance vehicle 4 Wheel 4A Outer peripheral surface 5 Wheel traveling surface 5a Inclined traveling surface 6 Projection 7 Fitting groove 8 Fitting groove forming inclined surface 9 Outer flatness Unit 10 drive unit 10a wheel shaft 11 front traveling unit 12 rear traveling unit 13 upper guide roller 14 lower guide roller 31 hanger member 32 connecting bar 41 driving wheel 42 traveling wheel

Claims (4)

A transport vehicle traveling device corresponding to an inclined path composed of a rail having an inclined portion and a self-propelled transport vehicle that travels with wheels mounted on a wheel travel surface on the rail,
On the inclined traveling surface which is the wheel traveling surface of the inclined portion, a plurality of peaks and valleys extending in the rail longitudinal direction are alternately and continuously formed in the rail width direction,
Forming a plurality of crests and troughs extending in the circumferential direction on the outer circumferential surface of the wheel in the wheel width direction in a shape that engages with the inclined traveling surface ,
In the width direction of the wheel, an outer flat portion that forms the same outer peripheral surface as the top of the peak portion of the wheel is provided outside the peak portion and valley portion of the wheel, and in the width direction of the rail, Conveying vehicle travel corresponding to an inclined path, characterized in that a flat surface having substantially the same height as the bottom of the valley portion of the inclined traveling surface is provided outside the peak and valley portions of the inclined traveling surface. apparatus.   A plurality of ridges extending in the rail width direction are formed in the inclined running surface in a substantially inverted V shape in a cross-sectional view perpendicular to the traveling direction and extending in the rail width direction to form the peak and valley portions, 2. A shape that engages with a ridge, and a plurality of substantially V-shaped fitting grooves extending in the circumferential direction are continuously provided on the outer peripheral surface of the wheel to form the crest and trough. A transport vehicle traveling device corresponding to the described inclined path.   The transport vehicle travel device corresponding to the inclined path of the transport cart according to claim 1 or 2, wherein at least one of the inclined travel surface or the outer peripheral surface is formed of an elastic body. The conveyance vehicle corresponding to the inclination path of any one of Claims 1-3 formed so that the peak of the peak part of the wheel may not contact the rail when traveling the inclination part. Traveling device.

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