Multifunctional telegraph pole climbing device
Technical Field
The invention relates to a device, in particular to a multifunctional telegraph pole climbing device.
Background
The wire pole is high again thin, does not have professional instrument to climb and is fairly difficult, and traditional foot-operated climbing device has wasted too much physical power in the in-process of frequent climbing up and down and overhaul moreover. So the multifunctional telegraph pole climbing device is designed.
Disclosure of Invention
The invention provides a multifunctional telegraph pole climbing device which has the beneficial effects that a climbing motor mechanism can drive a climbing wheel to rotate so as to enable the device to move upwards, and a tensioning motor mechanism can drive a tensioning mechanism so as to enable the device to be tightly held on a telegraph pole.
In order to solve the technical problem, the invention relates to a device, in particular to a multifunctional telegraph pole climbing device which comprises a box body, a climbing motor mechanism, a coupling, a tensioning motor mechanism, climbing wheels, a connecting frame, a tensioning mechanism, a wheel set mechanism and a pedal mechanism.
The box body consists of a wheel groove, a wheel axle hole, a climbing motor seat, a transmission hole and a tensioning motor seat; three wheel grooves are arranged, and climbing wheels are arranged in the wheel grooves; six wheel shaft holes are formed, and the wheel shaft holes penetrate through rolling shafts of the climbing wheels; the climbing motor base is positioned on the right side of the box body and is a circular opening, and four threaded holes are formed in the periphery of the climbing motor base; two transmission holes are formed, and the transmission shaft penetrates through the transmission holes; the tensioning motor base is positioned at the lower part of the right side of the box body, the tensioning motor base is a circular opening, and four threaded holes are formed in the periphery of the tensioning motor base;
the climbing motor mechanism consists of a climbing motor shaft, a fixed block and a climbing motor; a threaded hole is processed at the left end of the climbing motor shaft, and the left end of the climbing motor shaft is fixed with the coupling through a screw; the number of the fixing blocks is four, through holes are processed in the fixing blocks, the fixing blocks are welded in the middle of the climbing motor, and the right sides of the fixing blocks are in contact with the box body; the climbing motor is fixed on the climbing motor base through screws;
the coupling consists of a fixed hole and a cylindrical sleeve; two fixing holes are formed, and the fixing holes penetrate through the inner hexagonal screws; the cylindrical sleeve is cylindrical, the left end of the cylindrical sleeve is fixed with the transmission shaft through screws, and the right side of the cylindrical sleeve is fixed with the climbing motor shaft through screws;
the tensioning motor mechanism consists of a motor helical gear, a tensioning motor and a fixing plate; the motor bevel gear is welded on the upper part of the shaft of the tensioning motor mechanism, and the bevel gear on the right side of the motor bevel gear is meshed; the tensioning motor is fixed on the tensioning motor base through a screw; the fixed plates are rectangular, four fixed plates are arranged, and the fixed plates are welded on the tensioning motor;
the climbing wheel consists of a roller mechanism and a transmission gear; the roller wheel mechanism is meshed with the transmission gear through the roller wheel bevel gear; the transmission gears are provided with three groups, and each group of the transmission gears is provided with two groups;
the roller mechanism consists of a roller, a roller and a roller bevel gear; the rolling shaft is a cylinder, and two ends of the rolling shaft are in contact with the box body; the roller is a cylinder and is fixed in the middle of the roller; the roller helical gear is welded at the lower part of the rolling shaft and is meshed with the first gear;
the transmission gear consists of a gear II, a gear III, a gear I and a transmission shaft; the second gear is longitudinally fixed on the transmission shaft through a pin, and is transversely fixed on the transmission shaft through a nut; the third gear is fixed on the other transmission shaft and is meshed with the second gear; the first gear is fixed at one end of the transmission shaft and meshed with the roller helical gear; the middle part of the transmission shaft is contacted with the box body, and the right end of the transmission shaft at the lower part is fixed with the climbing motor mechanism through a coupling;
the connecting frame consists of a wheel axle hole, a bearing cover, a screw rod hole, a wheel set connecting hole and a hinge groove; three groups of wheel axle holes are arranged, two groups of wheel axle holes are arranged, and rollers are arranged in the wheel axle holes; the bearing cover is in a circular ring shape, four round holes are processed on the bearing cover, screws penetrate through the round holes of the bearing cover, and the right side of the bearing cover is in contact with the bearing; two screw holes are arranged, the left side of each screw hole is communicated with the bearing block, the right side of each screw hole is communicated with the atmosphere, and a threaded rod penetrates through each screw hole; the four wheel set connecting holes are fixed with the wheel set mechanism through screws; the loose-leaf groove is positioned at the lower part of the connecting frame, and loose leaves are welded in the loose-leaf groove;
the tensioning mechanism consists of a bearing, a threaded rod, a gear four, a helical gear and a gear five; the two bearings are arranged, the bearings are positioned on the left side of the threaded rod, the bearings are positioned in the bearing block, and the left sides of the bearings are in contact with the bearing cover; the threaded rod is contacted with the connecting frame, and the right end of the threaded rod is contacted with the box body; the fourth gear is fixed at the left end of the threaded rod, and the lower part of the fourth gear is meshed with the fifth gear; the helical gear is sleeved on the right side of the threaded rod through a key, and the lower part of the helical gear is meshed with the motor helical gear; a fifth gear is fixed at the left end of the threaded rod;
the wheel set mechanism consists of a wheel, a connecting hole and an H-shaped connecting seat; the number of the wheels is two, and the wheels are connected with the H-shaped connecting seat through shafts; four connecting holes are arranged, the connecting holes are positioned in the middle of the H-shaped connecting seat, screws penetrate through the connecting holes, and the screws in the connecting holes are in threaded fit with the wheel set connecting holes; two ends of the H-shaped connecting seat are connected with the wheels, and the middle part of the H-shaped connecting seat is fixed at the lower part of the connecting frame through screws;
the pedal mechanism consists of a pedal, a hinge and a limiting plate; the pedal is rectangular, and the hinge is welded at the right end of the pedal; one part of the hinge is welded at the lower part of the connecting frame, and one part of the hinge is welded at the right side of the pedal; the limiting plate is welded at the lower part of the right side of the pedal;
the box body is square, the left side of the box body is provided with a climbing wheel, and the right side of the box body is provided with a climbing motor mechanism; the climbing motor mechanism is fixed inside the box body through screws and is connected with the climbing wheels through coupling joints; one end of the coupling is fixed with the climbing motor mechanism, and the other end of the coupling is fixed with the climbing wheel; the tensioning motor mechanism is fixed at the lower part of the box body and is meshed with the tensioning mechanism; six climbing wheels are arranged; the connecting frame is connected with the box body through a tensioning mechanism; the tensioning mechanism is in threaded fit with the box body; the wheel set mechanism is arranged at the lower part of the connecting frame; the pedal mechanism is welded at the lower part of the connecting frame.
As a further optimization of the technical scheme, the multifunctional telegraph pole climbing device is provided with three groups of roller mechanisms, and each group of the roller mechanisms is provided with two.
As a further optimization of the technical scheme, the roller of the multifunctional telegraph pole climbing device is made of rubber materials.
As a further optimization of the technical scheme, the transmission shaft of the multifunctional telegraph pole climbing device is provided with three groups, and each group comprises two transmission shafts.
The multifunctional telegraph pole climbing device has the beneficial effects that:
the multifunctional telegraph pole climbing device can drive the climbing wheels to rotate through the climbing motor mechanism to enable the device to move upwards, and can also drive the tensioning mechanism through the tensioning motor mechanism to enable the device to be tightly held on a telegraph pole.
Drawings
The invention is described in further detail below with reference to the accompanying drawings and specific embodiments.
Figure 1 is a schematic structural view of a multifunctional pole climbing device of the present invention.
Fig. 2 is a schematic structural view of a box body 1 of the multifunctional telegraph pole climbing device.
Figure 3 is a schematic structural view of a climbing motor mechanism 2 of the multifunctional telegraph pole climbing device.
Figure 4 is a schematic structural view of a coupling 3 of the multifunctional pole climbing device of the invention.
Figure 5 is a schematic structural view of a tensioning motor mechanism 4 of the multifunctional pole climbing device of the invention.
Figure 6 is a schematic view of the structure of the climbing wheel 5 of the multifunctional pole climbing device of the invention.
Figure 7 is a schematic view of the other side of the climbing wheel 5 of the multifunctional pole climbing device of the invention.
Figure 8 is a schematic structural view of the roller mechanism 5-1 of the multifunctional pole climbing device of the present invention.
Figure 9 is a schematic structural view of a transmission gear 5-2 of the multifunctional pole climbing device of the invention.
Figure 10 is a schematic view of the structure of the connecting frame 6 of the multifunctional pole climbing device of the present invention.
Figure 11 is a schematic structural view of the tensioning mechanism 7 of the multifunctional pole climbing device of the present invention.
Figure 12 is a schematic view of the structure of the wheels 8-1 of the multifunctional pole climbing device of the present invention.
Figure 13 is a schematic structural view of a pedal mechanism 9 of the multifunctional pole climbing device of the invention.
In the figure: a box body 1; 1-1 of wheel groove; a wheel axle hole 1-2; climbing motor bases 1-3; 1-4 of a transmission hole; tensioning a motor base 1-5; a climbing motor mechanism 2; climbing motor shaft 2-1; 2-2 parts of a fixed block; climbing motors 2-3; a coupling 3; a fixing hole 3-1; 3-2 parts of a cylindrical sleeve; tensioning the motor mechanism 4; a motor bevel gear 4-1; tensioning a motor 4-2; a fixing plate 4-3; a climbing wheel 5; a roller mechanism 5-1; a roller 5-1-1; 5-1-2 of rollers; 5-1-3 roller bevel gears; a transmission gear 5-2; gear two 5-2-1; gear three 5-2-2; gear one 5-2-3; 5-2-4 of a transmission shaft; a connecting frame 6; a wheel axle hole 6-1; a bearing cover 6-2; screw holes 6-3; wheel set connecting holes 6-4; 6-5 of a loose leaf groove; a tensioning mechanism 7; a bearing 7-1; a threaded rod 7-2; gear four 7-3; 7-4 of a bevel gear; 7-5 parts of a gear; a wheel set mechanism 8; wheel 8-1; a connecting hole 8-2; 8-3 of an H-shaped connecting seat; a pedal mechanism 9; a pedal 9-1; 9-2 of loose leaves; and a limiting plate 9-3.
Detailed Description
The first embodiment is as follows:
the embodiment is described below with reference to fig. 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12 and 13, and the invention relates to a device, more specifically to a multifunctional telegraph pole climbing device, which comprises a box body 1, a climbing motor mechanism 2, a coupling 3, a tensioning motor mechanism 4, a climbing wheel 5, a connecting frame 6, a tensioning mechanism 7, a wheel set mechanism 8 and a pedal mechanism 9.
The box body 1 consists of a wheel groove 1-1, a wheel axle hole 1-2, a climbing motor base 1-3, a transmission hole 1-4 and a tensioning motor base 1-5; the wheel grooves 1-1 are provided with three wheel grooves, and climbing wheels 5 are arranged in the wheel grooves 1-1; six roller shafts are arranged in the wheel axle holes 1-2, and the climbing wheels 5 penetrate through the wheel axle holes 1-2; the climbing motor seat 1-3 is positioned on the right side of the box body 1, the climbing motor seat 1-3 is a circular opening, and four threaded holes are formed in the periphery of the climbing motor seat 1-3; two transmission holes 1-4 are arranged, and a transmission shaft 5-2-4 penetrates through the transmission holes 1-4; the tensioning motor base 1-5 is positioned at the lower part of the right side of the box body 1, the tensioning motor base 1-5 is a circular opening, and four threaded holes are formed in the periphery of the tensioning motor base 1-5;
the climbing motor mechanism 2 consists of a climbing motor shaft 2-1, a fixed block 2-2 and a climbing motor 2-3; a threaded hole is processed at the left end of the climbing motor shaft 2-1, and the left end of the climbing motor shaft 2-1 is fixed with the coupling 3 through a screw; four fixed blocks 2-2 are arranged, through holes are processed in the fixed blocks 2-2, the fixed blocks 2-2 are welded in the middle of the climbing motor 2-3, and the right sides of the fixed blocks 2-2 are in contact with the box body 1; the climbing motor 2-3 is fixed on the climbing motor base 1-3 through screws; the climbing motor mechanism 2 is connected into a circuit, the climbing motor mechanism 2 is started, and the climbing motor mechanism 2 rotates. The left end of the climbing motor mechanism 2 is fixed with the coupling 3, and the climbing motor mechanism 2 drives the coupling 3 to rotate;
the coupling 3 consists of a fixed hole 3-1 and a cylindrical sleeve 3-2; two fixing holes 3-1 are arranged, and the fixing holes 3-1 penetrate through the inner hexagonal screws; the cylindrical sleeve 3-2 is cylindrical, the left end of the cylindrical sleeve 3-2 is fixed with the transmission shaft 5-2-4 through screws, and the right side of the cylindrical sleeve 3-2 is fixed with the climbing motor shaft 2-1 through screws;
the tensioning motor mechanism 4 consists of a motor bevel gear 4-1, a tensioning motor 4-2 and a fixing plate 4-3; the motor bevel gear 4-1 is welded on the upper part of the shaft of the tensioning motor mechanism 4, and the right bevel gear 7-4 of the motor bevel gear 4-1 is meshed; the tensioning motor 4-2 is fixed on the tensioning motor base 1-5 through screws; the fixed plates 4-3 are rectangular, four fixed plates 4-3 are arranged, and the fixed plates 4-3 are welded on the tensioning motor 4-2;
the climbing wheel 5 consists of a roller wheel mechanism 5-1 and a transmission gear 5-2; the roller wheel mechanism 5-1 is meshed with the transmission gear 5-2 through a roller wheel bevel gear 5-1-3; three groups of transmission gears 5-2 are provided, and two groups of transmission gears 5-2 are provided;
the roller wheel mechanism 5-1 consists of a roller 5-1-1, a roller 5-1-2 and a roller bevel gear 5-1-3; the roller 5-1-1 is a cylinder, and two ends of the roller 5-1-1 are in contact with the box body 1; the roller 5-1-2 is a cylinder, and the roller 5-1-2 is fixed in the middle of the roller 5-1-1; the roller bevel gear 5-1-3 is welded at the lower part of the roller 5-1-1, and the roller bevel gear 5-1-3 is meshed with the gear I5-2-3;
the transmission gear 5-2 consists of a gear II 5-2-1, a gear III 5-2-2, a gear I5-2-3 and a transmission shaft 5-2-4; the second gear 5-2-1 is longitudinally fixed on the transmission shaft 5-2-4 through a pin, and the second gear 5-2-1 is transversely fixed on the transmission shaft 5-2-4 through a screw cap; a gear III 5-2-2 is fixed on the other transmission shaft 5-2-4, and the gear III 5-2-2 is meshed with a gear II 5-2-1; two first gears 5-2-3 are arranged, the first gear 5-2-3 is fixed at one end of the transmission shaft 5-2-4, and the first gear 5-2-3 is meshed with the roller helical gear 5-1-3; the middle part of the transmission shaft 5-2-4 is contacted with the box body 1, and the right end of the transmission shaft 5-2-4 at the lower part is fixed with the climbing motor mechanism 2 through a coupling 3; the left end of the coupling 3 is fixed with the transmission shaft 5-2-4, and the coupling 3 drives the transmission shaft 5-2-4 to rotate. The middle part of the transmission shaft 5-2-4 is fixed with the gear III 5-2-2, the transmission shaft 5-2-4 drives the gear III 5-2-2 to rotate, the upper part of the gear III 5-2-2 is meshed with the gear II 5-2-1, the gear III 5-2-2 drives the gear II 5-2-1 to rotate, the gear II 5-2-1 is fixed on the other transmission shaft 5-2-4, and the gear 5-2-1 drives the transmission shaft 5-2-4 to rotate; a first gear 5-2-3 on the left side of a transmission shaft 5-2-4 is fixed together, and a first gear 5-2-3 is meshed with a roller bevel gear 5-1-3, so that the transmission shaft 5-2-4 drives the roller bevel gear 5-1-3 to rotate, the roller bevel gear 5-1-3 is fixed on a roller 5-1-2, and the roller 5-1-2 is contacted with a telegraph pole and moves upwards along the telegraph pole; when the electric vehicle moves upwards, the motor is changed to rotate;
the connecting frame 6 consists of a wheel axle hole 6-1, a bearing cover 6-2, a screw rod hole 6-3, a wheel set connecting hole 6-4 and a hinge groove 6-5; three groups of wheel axle holes 6-1 are arranged, two groups of wheel axle holes 6-1 are arranged, and rollers are arranged in the wheel axle holes 6-1; the bearing cover 6-2 is annular, four round holes are processed on the bearing cover 6-2, screws penetrate through the round holes of the bearing cover 6-2, and the right side of the bearing cover 6-2 is in contact with the bearing 7-1; two screw holes 6-3 are arranged, the left side of the screw hole 6-3 is communicated with the bearing seat, the right side of the screw hole 6-3 is communicated with the atmosphere, and a threaded rod 7-2 penetrates through the screw hole 6-3; four wheel set connecting holes 6-4 are arranged, and the wheel set connecting holes 6-4 are fixed with the wheel set mechanism 8 through screws; the loose-leaf groove 6-5 is positioned at the lower part of the connecting frame 6, and loose leaves 9-2 are welded in the loose-leaf groove 6-5;
the tensioning mechanism 7 consists of a bearing 7-1, a threaded rod 7-2, a gear four 7-3, a helical gear 7-4 and a gear five 7-5; two bearings 7-1 are arranged, the bearing 7-1 is positioned on the left side of the threaded rod 7-2, the bearing 7-1 is positioned in the bearing seat, and the left side of the bearing 7-1 is in contact with the bearing cover 6-2; the threaded rod 7-2 is in contact with the connecting frame 6, and the right end of the threaded rod 7-2 is in contact with the box body 1; a gear wheel IV 7-3 is fixed at the left end of the threaded rod 7-2, and the lower part of the gear wheel IV 7-3 is meshed with a gear wheel V7-5; the helical gear 7-4 is sleeved on the right side of the threaded rod 7-2 through a key, and the lower part of the helical gear 7-4 is meshed with the motor helical gear 4-1; a fifth gear 7-5 is fixed at the left end of the threaded rod 7-2; connecting a tensioning motor mechanism 4 into a circuit, starting the tensioning motor mechanism 4, rotating the tensioning motor mechanism 4 to drive a motor gear 4-1 to rotate, engaging the upper part of a motor bevel gear 4-1 with a bevel gear 7-4, driving the bevel gear 7-4 to rotate by the motor bevel gear 4-1, sleeving the bevel gear 7-4 on the right side of a threaded rod 7-2 through a key, driving the threaded rod 7-2 to rotate by the rotation of the bevel gear 7-4 through the key, matching the threaded rod 7-2 with a box body 1 in a threaded manner, and pulling the box body 1 to move towards a connecting frame 6 by the threaded rod; a fifth gear 7-5 is fixed on the left side of the threaded rod 7-2, a fifth gear 7-5 is meshed with a fourth gear 7-3, the fifth gear 7-5 drives the fourth gear 7-3 to rotate, the fourth gear 7-3 is fixed on the other threaded rod 7-2, the threaded rod 7-2 rotates to drive the box body 1 to move, and the telegraph pole is tightly held between the box body 1 and the connecting frame 6
The wheel set mechanism 8 consists of a wheel 8-1, a connecting hole 8-2 and an H-shaped connecting seat 8-3; two wheels 8-1 are arranged, and the wheels 8-1 are connected with an H-shaped connecting seat 8-3 through a shaft; four connecting holes 8-2 are arranged, the connecting holes 8-2 are positioned in the middle of the H-shaped connecting seat 8-3, screws penetrate through the connecting holes 8-2, and the screws in the connecting holes 8-2 are in threaded fit with the wheel set connecting holes 6-4; two ends of the H-shaped connecting seat 8-3 are connected with the wheels 8-1, and the middle part of the H-shaped connecting seat 8-3 is fixed at the lower part of the connecting frame 6 through screws;
the pedal mechanism 9 consists of a pedal 9-1, a hinge 9-2 and a limit plate 9-3; the pedal 9-1 is rectangular, and the hinge 9-2 is welded at the right end of the pedal 9-1; one part of the hinge 9-2 is welded at the lower part of the connecting frame 6, and one part of the hinge 9-2 is welded at the right side of the pedal 9-1; the limiting plate 9-3 is welded at the lower part of the right side of the pedal 9-1;
the box body 1 is square, the left side of the box body 1 is provided with a climbing wheel 5, and the right side of the box body 1 is provided with a climbing motor mechanism 2; the climbing motor mechanism 2 is fixed inside the box body 1 through screws, and the climbing motor mechanism 2 is connected with climbing wheels 5 through a coupling 3; one end of the coupling 3 is fixed with the climbing motor mechanism 2, and the other end of the coupling 3 is fixed with the climbing wheel 5; the tensioning motor mechanism 4 is fixed at the lower part of the box body 1, and the tensioning motor mechanism 4 is meshed with the tensioning mechanism 7; six climbing wheels 5 are arranged; the connecting frame 6 is connected with the box body 1 through a tensioning mechanism 7; the tensioning mechanism 7 is in threaded fit with the box body 1; the wheel set mechanism 8 is arranged at the lower part of the connecting frame 6; the pedal mechanism 9 is welded to the lower portion of the connecting frame 6.
The second embodiment is as follows:
the present embodiment is described below with reference to fig. 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, and 13, and the present embodiment further describes the first embodiment, in which three sets of roller mechanisms 5-1 are provided, and two sets of roller mechanisms 5-1 are provided.
The third concrete implementation mode:
the present embodiment will be described below with reference to fig. 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, and 13, and the present embodiment further describes the first embodiment, in which the roller 5-1-1 is made of a rubber material.
The fourth concrete implementation mode:
the present embodiment is described below with reference to fig. 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, and 13, and the present embodiment further describes the first embodiment, in which three sets of two transmission shafts 5-2-4 are provided.
The working principle of the invention is as follows: climbing principle: the climbing motor mechanism 2 is connected into a circuit, the climbing motor mechanism 2 is started, and the climbing motor mechanism 2 rotates. Climbing motor mechanism 2 left end and shaft coupling 3 reciprocal anchorage, climbing motor mechanism 2 drives shaft coupling 3 rotatory. The left end of the coupling 3 is fixed with the transmission shaft 5-2-4, and the coupling 3 drives the transmission shaft 5-2-4 to rotate. The middle part of the transmission shaft 5-2-4 is fixed with the gear III 5-2-2, the transmission shaft 5-2-4 drives the gear III 5-2-2 to rotate, the upper part of the gear III 5-2-2 is meshed with the gear II 5-2-1, the gear III 5-2-2 drives the gear II 5-2-1 to rotate, the gear II 5-2-1 is fixed on the other transmission shaft 5-2-4, and the gear 5-2-1 drives the transmission shaft 5-2-4 to rotate; a first gear 5-2-3 on the left side of a transmission shaft 5-2-4 is fixed together, and a first gear 5-2-3 is meshed with a roller bevel gear 5-1-3, so that the transmission shaft 5-2-4 drives the roller bevel gear 5-1-3 to rotate, the roller bevel gear 5-1-3 is fixed on a roller 5-1-2, and the roller 5-1-2 is contacted with a telegraph pole and moves upwards along the telegraph pole; when the motor moves upwards, the motor is changed to rotate.
The holding principle is as follows: connecting a tensioning motor mechanism 4 into a circuit, starting the tensioning motor mechanism 4, rotating the tensioning motor mechanism 4 to drive a motor gear 4-1 to rotate, engaging the upper part of a motor bevel gear 4-1 with a bevel gear 7-4, driving the bevel gear 7-4 to rotate by the motor bevel gear 4-1, sleeving the bevel gear 7-4 on the right side of a threaded rod 7-2 through a key, driving the threaded rod 7-2 to rotate by the rotation of the bevel gear 7-4 through the key, matching the threaded rod 7-2 with a box body 1 in a threaded manner, and pulling the box body 1 to move towards a connecting frame 6 by the threaded rod; the five gear 7-5 is fixed on the left side of the threaded rod 7-2, the five gear 7-5 is meshed with the four gear 7-3, the five gear 7-5 drives the four gear 7-3 to rotate, the four gear 7-3 is fixed on the other threaded rod 7-2, the threaded rod 7-2 rotates to drive the box body 1 to move, and the telegraph pole is tightly held between the box body 1 and the connecting frame 6.
It is to be understood that the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and that various changes, modifications, additions and substitutions which are within the spirit and scope of the present invention and which may be made by those skilled in the art are also within the scope of the present invention.