JPH0155934B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a nut tightening device for use in a plow barrel assembly apparatus, and more particularly to a nut tightening device for tightening nuts after temporarily fixing plow teeth to a plow barrel main body with nuts.

The nut fastening device applied to the conventional plow barrel assembly device does not tighten the nut which temporarily fastens the plow teeth to the plow barrel body, but instead tightens the nut supplied to the wrench portion of the nut fastening device onto the threaded portion of the plow teeth. A method is used in which the plow teeth are fixed to the plow body by screwing. For example, in the case of the nut tightening device disclosed in Japanese Patent Application Laid-open No. 52-9759, which was previously developed by the present applicant, the nut runner device for tightening the nut is mounted on a movable cart and uses a positioned toothed screw portion. The nut runner moves between the position directly below the nut supply device and the rear nut supply device. A wrench portion tightens the supplied and held nut onto the toothed threaded portion, and this wrench portion is advanced and retracted in a direction perpendicular to the drive shaft via the spline shaft to bring the spanner portion closer to the toothed threaded portion. A coupling mechanism between the drive shaft and the rotary drive device, which consists of a cylinder device and moves together with the movable cart, and a coupling mechanism that allows the spanner part to move freely in the direction perpendicular to the drive shaft while being interlocked and connected to the drive shaft. The mechanism, as well as the mechanism in which a cylinder device is disposed perpendicular to the drive shaft for moving the spanner portion, must be complicated and large, and their handling is troublesome.

The present invention aims to realize a nut tightening device for a plow barrel assembly device with a simple structure by temporarily fixing the plow teeth to the plow barrel main body with nuts and then tightening each nut. It is something to do.

Therefore, the first thing to consider is to position the insert itself, which has a nut tightening tool at its tip and is inserted into the plow barrel body, at a position where the nut tightening tool corresponds to the nut that temporarily fastened the plow teeth to the plow barrel body. In this method, the nut is moved in a direction closer to the nut, and then the nut is tightened using a nut tightening tool. For example, as shown in FIG. 8, a nut tightening tool 10 is attached to the tip.
an insert 102 having a rotary drive device (not shown) for the nut tightening tool 101;
, an elevating body 104 that can be raised and lowered along the pillar 103
This column 103 is supported in a cantilevered manner on the carriage 10.
By moving this trolley 105 back and forth, the insertion body 102 is moved in the A and B directions, inserted into the appropriately supported plow body 106, and the elevating body 104 is moved in the M and N directions. This is a method in which the nut tightening tool 101 is brought closer to the nut temporarily fixed to the plow body body 106 by moving the nut tightening tool 101 in the direction shown in FIG.

However, in this case, the long insert body 102 is supported in a cantilevered manner on the elevating body 103, and the elevating body 104 is raised and lowered to attach the tightening tool 101 to the plow body 106.
The insert 10 can be brought close to the nut temporarily tightened.
2 may vibrate relatively strongly as the elevating body 104 moves up and down, it is difficult to position the nut tightening tool 101 so that it fits properly into a predetermined nut, and it is difficult to quickly tighten the nut. It is inferred that this cannot be expected.

Taking this into consideration, the present invention provides a movable rod parallel to the length direction of the insert at the tip of the insert, and this movable rod is provided with a nut tightening tool and a pneumatic motor for rotationally driving the nut tightening tool. The objective is to obtain a nut tightening device with an extremely simple structure that can quickly perform the task of tightening nuts temporarily fixed to the body of the plow cylinder by moving only this movable rod in a direction perpendicular to the insertion direction of the inserter. be.

Hereinafter, one embodiment of the present invention will be described based on the drawings. This embodiment relates to an assembly device for a small-diameter plow cylinder and a large-diameter plow cylinder.As shown in FIG. It has a nut 4 for fixing the teeth 3 to the plow body bodies 1 and 2, a pair of side plates 5, and a rotating shaft 6.

Next, the plow barrel assembly device will be explained based on FIG. 2 and the following figures. 7 is the bed, 8 is the bed 7
The base is connected to the bed 7, and its upper surface is connected to the bed 7
It is flush with the top surface of. Reference numeral 9 denotes a fixed support frame erected on the bed side end of the base 8, and 10 and 11 each pair are arranged on the bed opposite end of the base 8 along the directions of arrows A and B. Guide rail for small diameter plowing drum main body and guide rail for large diameter plowing drum main body, 12,1
3 is a movable support frame disposed on each of the guide rails 10 and 11 so as to be slidable in the directions of arrows A and B, respectively;
14 and 15 are movable side fitting bodies rotatably supported by the movable support frames 12 and 13, respectively,
Tip tapered parts 14a and 15a that are fitted into one end of each of the plowing trunk bodies 1 and 2, and a flange part 14b that is brought into contact with one end surface of each of the plowing trunk bodies 1 and 2,
15b. Reference numerals 16 and 17 denote a small-diameter plow-drum body support and a large-diameter plow-drum main body support, which are disposed between the fixed support frame 9 on the base 8 and each guide rail 10, 11. Fixed frame 16
a, 17a, and a circular arc portion 16 disposed on each frame portion 16a, 17a via leg portions 16b, 17b.
c, 17c, each of the arcuate portions 16c, 17
The small-diameter plow cylinder main body 1 and the large-diameter plow cylinder main body 2 to be assembled are placed on c. Reference numerals 18 and 19 denote first and second hydraulic cylinder devices whose main bodies are fixed to the base 8 and whose piston rod tips are connected to the movable support frames 12 and 13, respectively. is moved in the directions of arrows A and B. Reference numerals 20 and 21 denote fixed side fitting bodies that are rotatably supported by the fixed support frame 9, facing the respective movable side fitting bodies 14 and 15, and are inserted into the through holes of the fixed support frame 9 through the bushes 24. It consists of a ring-shaped main body 22, 23 which is rotatably inserted through the main body 22, 23, and a ring-shaped end part 25, 26 which is bolted to the opposite end of each of the main bodies 22, 23,
Each end portion 25, 26 has a tapered tip portion 25a, which is fitted into the other end portion of each wood-throwing body 1, 2.
26a, and flanges 25b, 26b which are brought into contact with the other end surfaces of the respective plow body bodies 1, 2. 27
is a first drive motor disposed in the center of the fixed support frame 9, which intermittently rotates each ring-shaped main body 22, 23 at a predetermined angle via a gear mechanism 28. Reference numerals 29 and 30 are positioning and connecting devices for the plow trunk bodies 1 and 2, which are disposed opposite to the fixed side fitting bodies 20 and 21 on the upper surface of the fixed support frame 9, and are connected to the respective ring-shaped ends 25 and 26. A positioning hole 31 is drilled in a proper position, a cylinder 33 is secured to each collar part 25b, 26b with bolts 32 facing each positioning hole 31, and a cylinder 33 is attached to the cylinder 33 so as to be movable in the directions of arrows C and D. A positioning lock pin 3 which is inserted through and whose tip 34a can be freely fitted into each of the positioning holes 31.
4, a spring 35 that biases each pin 34 in the direction of arrow C, and an air cylinder 37 whose main body is bolted to the upper surface of the fixed support frame 9 via a frame 36.
The annular groove 39, which is screwed onto the tip of the piston rod of the air cylinder 37 and formed by the large diameter portion 38a, the small diameter portion 38b, and the flange portion 38c, is engageable with the upper end head portion 34b of each of the positioning lock pins 34. It consists of 38 docks. 40 is a nut tightening device, and arrows A and B move over the bed 7.
A cart 41 that is movable in a direction, a sliding body 42 disposed on the truck 41 so as to be slidable along directions E and F perpendicular to the longitudinal directions A and B of the bed 7, and a sliding body 42 on the sliding body 42. It has a pair of pillars 43 erected thereon, and an elevating body 44 that fits into the pillars 43 so as to be movable up and down. 45 is a third hydraulic cylinder device that slides the sliding body 42 in the directions of arrows E and F; 46 is the above-mentioned both support columns 4;
The top plate 47 is arranged between the top plate 46 and the top plate 47.
A fourth hydraulic cylinder device 48 has its base end fixed to the side surface of the elevating body 44 and its distal end connected to each fixed side fitting body 20, 21
It is an insert that extends toward the end, and the configuration of the tip is as follows. That is, Figures 5 and 6
As shown in the figure, 49 is the end wall 5 of the insert main body 50.
A pair of side plates extending from 0a along the directions of arrows A and B; 51 is an end plate disposed between the free ends of the both side plates 49; 52 is a top plate disposed between the upper surfaces of the both side plates 49; 53; 54 is a rotating shaft rotatably disposed on the bottom plate 53 via bearings 55 and 56; 57 is a drive shaft whose main body is fixed to the bottom plate 53; A rotary actuator 57a is connected to the rotary shaft 54 via a coupling 58, and is used to reciprocate the rotary shaft 54 over a range of 90 degrees in the directions of arrows G and H. 59 is a flexible air pipe connected to the rotary actuator 57, and 60 is a movable rod disposed between the side plates 49, with ribs 61 protruding from both sides at appropriate intervals. Reference numeral 62 is a sliding plate whose U-shaped groove 62a on the upper surface fits into the movable rod 60 and is secured to each of the ribs 61 with bolts 63; 64 is fixed to both side plates 49, and each sliding plate 62 is indicated by the arrow I; A guide frame 65 supports the guide frame so as to be movable in the J direction, an arm 65 is fitted onto the rotary shaft 54 under each sliding plate 62 and is locked with a key, and 66 is an arm between each arm 65 and each sliding plate 62.
67 is a rotary rod disposed at the tip of the movable rod 60 so as to be rotatable along a direction perpendicular to the longitudinal direction of the movable rod 60.
Reference numeral 8 denotes an operating rod that is screwed into the rotary rod 67, and 69 is a cylindrical nut tightening tool that is spline-fitted to the small diameter portion of the lower end of the operating rod 68 and is slidable in the directions of arrows I and J. is the nut 4 that fixes the tooth 3
A fitting portion 70 is formed to fit into the. Reference numeral 71 denotes a pin that passes through the small diameter portion of the lower end of the operating rod 68, and its both ends are fitted into a pair of elongated holes 72 formed in the tool 69.
9 is configured to be able to freely move back and forth within a certain range. 7
Reference numeral 3 denotes a spring that is fitted onto the operating rod 68 between the large diameter portion of the upper end of the operating rod 68 and the tool 69, and urges the tool 69 in the direction of arrow I. 74 is a pneumatic motor with a torque limiter disposed at the base end of the movable rod 60, and the rotation of the motor shaft is controlled by the rotary rod 67 via, for example, a bevel gear mechanism interposed between the motor shaft and the rotary rod 67. By transmitting the information to the operating rod 67 and rotating the rotary rod 67 in a predetermined direction, the tool 69 is rotated in the same direction via the operating rod 68. 75 is a flexible air pipe connected to the motor 74. A second drive motor 76 is provided at one end of the bed 7, and is used to reciprocate the carriage 41 in the directions of arrows E and F via a screw shaft mechanism (not shown). 77
is bellows.

The operation of the above configuration will be explained. First, when assembling the small-diameter plow body 1, the air cylinder 37 is operated to reduce the piston rod in the state shown in FIGS. 1 and 2. This results in dock 38
moves in the direction of arrow D, and the flange 38 of the dock 38
c engages with the upper head 34b of the positioning lock pin 34, the pin 34 is pulled up in the direction of arrow D against the spring 35, and the tip 34a of the pin 34 is pulled out from the positioning hole 31. Next, the small-diameter plow body main body 1, which has the plow teeth 3 lightly fastened with nuts 4 but does not have side plates 5 at both ends, is attached to the small-diameter plow main body support 1.
6 is placed on the circular arc portion 16c. Next, the piston rod of the first hydraulic cylinder device 18 is reduced.
Then, the movable support frame 12 is moved in the direction of arrow A, the tip tapered part 14a of the moving side fitting body 14 is fitted into one end of the small diameter plowing trunk body 1, and the small diameter plowing trunk main body 1 is When pushed in the direction of arrow A, the other end of the main body 1 fits into the tapered tip portion 25a of the stationary side fitting body 20. As a result, the small diameter plow body 1 has a circular arc portion 16c.
Both mating bodies 1 in a state slightly lifted from
4 and 20. Next, after rotating the small diameter plow body 1 and aligning the through hole 1a of the main body 1 with the positioning hole 31,
The operation of the air cylinder 37 is stopped. Then, the positioning lock pin 34 is moved in the direction of arrow C by the spring 35, and the tip 34a of the pin 34 is moved to the seventh position.
As shown in the figure, it fits into the through hole 1a and the positioning hole 31. As a result, the small-diameter plow body 1 becomes connected to the fixed side fitting body 20. Then the fourth
The hydraulic cylinder device 47 is operated to appropriately raise and lower the elevating body 44 to adjust the height of the insert body 48. Next, the second drive motor 76 is operated to drive the trolley 4.
1 in the direction of arrow B, the tip of the insert body 48 is inserted into the small diameter plow body 1 through the fixed side fitting body 20, and the nut tightening tool 69 is opposed to the innermost nut 4. Next, the rotary actuator 57 is operated to rotate the rotary shaft 54 shown in solid line in FIGS. 5 and 6 by 90 degrees in the direction of arrow H.
Then, each sliding plate 62 is slid in the direction of arrow I via each arm 65 and each link 66, and the sixth
The movable rod 60 is also moved in the same direction as shown by the imaginary line in the figure, and the tool 69 is fitted into a predetermined nut 4. The impact during this fitting is absorbed by the spring 73, so that the tool 69 and the nut 4 are not damaged. Next, the pneumatic motor 74 is activated. Then, the rotating rod 67 is rotated in a predetermined direction, and the operating rod 6
8, the tool 69 is also rotated in the same direction, and the nut 4 is further tightened. When the nut 4 is sufficiently tightened, the torque limiter stops the operation of the pneumatic motor 74. Next, actuate the rotary actuator 57 to move the rotating shaft 54 to arrow G.
direction and move the moving rod 60 in the direction of arrow J to separate the tool 69 from the nut 4. Next, the first drive motor 27 is operated to rotate the fixed side fitting body 20 by a predetermined angle via the gear mechanism 28, thereby rotating the small diameter plow body 1 by a predetermined angle in the same direction via the positioning pin 34. Then, the nut 4 to be tightened next is placed opposite the tool 69. At this time, the tool 69 and its nut 4 are aligned with arrows A and B.
If there is a misalignment in the direction, the second drive motor 76 may be operated to move the insert 48 in the direction of arrow A or B as appropriate, and the tool 69 may be opposed to the next nut 4 to be tightened. . Next, the tool 69 may be fitted into the nut 4 by performing the same operation as described above, and the tool 69 may be further tightened. Similarly, each nut 4 may be tightened in turn.

Next, when assembling the large-diameter plow body 2, as in the previous case, the large-diameter plow body 2 is attached to the circular arc portion 1.
7c, the second hydraulic cylinder device 19
Both fitting bodies 15, 2 are made by reducing the piston rod of
1 supports both ends of the large-diameter plowing drum main body 2, and the large-diameter plowing drum main body 2 is connected to the stationary side fitting body 2 by the pin 34.
1, the piston rod of the third hydraulic cylinder device 45 is reduced, and the sliding body 4 is connected to the solid line position in FIG.
2 in the direction of arrow F, so that the insert body 48 faces the large-diameter plow body 2. Next, as in the case described above, the tip of the insert 48 is inserted into the large-diameter plow body 2, and each nut 4 is tightened in turn.

Once the above retightening work is completed, the first
The piston rods of the second hydraulic cylinder devices 18 and 19 are extended, and the movable support frames 12 and 13 are moved in the direction of arrow B, so that the fitting body 1 of each of the plow cylinder bodies 1 and 2 is moved.
4, 15, 20, 21, the tip 34a of the lock pin 34 is pulled out from the hole 1a, 31, and the plow body bodies 1, 2 on the respective arcuate portions 16c, 17c are removed.

As described above, according to the nut tightening device of the present invention, a pair of fitting bodies are provided which are rotatably supported by the support body and which fit into each end of the plow barrel main body to support the plow barrel main body, and one of the fitting bodies is provided. A nut tightening device in a plow barrel assembly device provided with a plow barrel body rotation drive device that rotates the plow barrel body by rotating a fitted body, the nut tightening device being provided with a through hole formed in one of the two fitted bodies. An inserter main body is provided, the tip of which is inserted into the woodburner body via the inserter body, and is movable intermittently in the longitudinal direction of the woodburner body, and the inserter main body is provided with a a movable pole arranged along the movable pole and movable in a direction perpendicular to the length direction and equipped with a pneumatic motor; A rotary shaft that rotates forward and backward, and the tip of an arm fixed at an appropriate position of the rotary shaft are connected to the movable pole, and the movable pole is rotated within a certain range toward the rotary shaft side by rotation of the rotary shaft. A spring is provided at the tip of the movable pole to project in a direction perpendicular to the movable pole and bias a nut tightening tool rotated by the pneumatic motor in the protruding direction. By rotating the rotating shaft installed in parallel with the movable rod provided along the length of the insert body, Since the insert is moved in a direction perpendicular to the inserting direction, the nut tightening tool provided on the movable rod can be easily fitted into the nut temporarily fastened to the plow body, although it has a simple structure. Quick tightening work can be performed on temporarily tightened nuts. In addition, the spring absorbs the impact when the nut tightening tool is fitted into the nut, making it possible to tighten the nut more quickly and easily. Further, since the pneumatic motor for rotationally driving the nut tightening tool is provided on the movable rod together with the nut tightening tool, the connection mechanism thereof can be made very simple.

As described above, the nut tightening device of the present invention is extremely suitable for tightening a nut when the plow teeth are temporarily fastened to the plow body with a nut. Since it is provided along the direction, the cross-sectional area of the insert body can be small, and the nut tightening operation can be performed on a small-diameter plow cylinder in the same way as on a large-diameter plow cylinder, which is extremely effective.

[Brief explanation of drawings]

Fig. 1 is a schematic perspective view of a plow cylinder, Figs. 2 to 7 show a nut tightening device in a plow cylinder assembly device according to an embodiment of the present invention, Fig. 2 is a front view, and Fig. 3 is a plan view. , Fig. 4 is a - arrow view of Fig. 2, Fig. 5
6 is a longitudinal sectional view of the tip of the insert body, FIG. 6 is a view taken in the direction of the − arrow in FIG. 5, and FIG. , 8th
The figure is a diagram for explaining the problem when tightening the nut with the plow teeth temporarily fixed to the plow barrel main body. 1, 2...Small diameter, large diameter plow body, 1a...
Through hole, 3...Kinetooth, 4...Nut, 9...Fixed support frame, 12, 13...Moveable support frame, 14, 1
5...Moving side fitting body, 18, 19, 45, 47...
...Hydraulic cylinder device, 20, 21... Fixed side fitting body, 27, 76... Drive motor, 29, 30...
Positioning connection device, 31... Positioning hole, 34...
...Positioning lock pin, 34b...Top end head, 3
5... Spring, 37... Air cylinder, 38... Dock, 40... Nut tightening device, 41... Dolly,
42...Sliding body, 44...Elevating body, 48...Insert body, 50...Insert body main body, 54...Rotating shaft, 57
...Rotary actuator, 60...Moving rod, 62...Sliding plate, 65...Arm, 66...
Link, 67... Rotating rod, 69... Nut tightening tool, 70... Fitting part, 73... Spring, 74...
pneumatic motor.

Claims (1)

[Claims] 1 A pair of fitting bodies are provided which are rotatably supported by a support body and which fit into each end of the wood-throwing body to support the wood-throwing body, and by rotating one of the fitting bodies, the wood-throwing body can be rotated. A nut tightening device for a plow barrel assembly device equipped with a plow barrel main body rotation drive device for rotating the main body, the tip of which is inserted into the plow barrel main body through a through hole formed in one of the two fitting bodies. and an insert body that is movable intermittently in the longitudinal direction of the wood-throwing body;
A movable rod disposed in the lengthwise direction of the inserter body, movable in a direction perpendicular to the lengthwise direction, and equipped with a pneumatic motor is disposed at the distal end of the inserter body; At the same time, the rotary shaft is rotated forward and backward within a certain angle range around the axis by a rotary actuator, and the tip of an arm fixed at an appropriate position of the rotary shaft is connected to the movable rod. A link is provided at the tip of the movable pole to enable reciprocating movement of the movable pole within a certain range toward the rotating shaft side by rotation of the movable pole, and a link is provided at the tip of the movable pole, protruding in a direction perpendicular to the movable pole and driven to rotate by the pneumatic motor. 1. A nut tightening device for a plow barrel assembly device, characterized in that the nut tightening tool is provided via a spring that biases the nut tightening tool in its projecting direction.