JPS6224920Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a spring-loading operating device for a sheath breaker, and more particularly, to a spring-loading operating device for a sheath breaker that facilitates attachment of an operating shaft to a frame.

The operating shaft of the spring-loading operation device in the shear cutter is supported by an opposing frame via a bearing fixed to this frame, and this operating shaft is equipped with a link mechanism for loading the shear cutter. An operating closing cam is press-fitted between the frames, and one end protruding from the frame has a closing lever for accumulating the closing spring, and the other end has a feed pawl wheel and a stopper connected in conjunction with a motor, etc. Generally, a ratchet wheel or the like is press-fitted. Therefore, when an operating shaft into which a closing cam, closing lever, feed pawl wheel, or stop pawl wheel is press-fitted is pivotally supported on a frame, only the loading cam must be supported first because the bearing is fixed to the frame in advance. was press-fitted onto the operating shaft, the frame was fitted onto the operating shaft via the bearing, and then the input lever, feed pawl wheel, stop pawl wheel, etc. were press-fitted into the shaft end protruding from the frame using a press. . However, when press-fitting the input lever, feed pawl wheel, or stop pawl wheel into the end of the operating shaft protruding from the frame, the large frame is already integrally attached to the operating shaft, which reduces work efficiency. At the same time, the press-fitting work was extremely dangerous because a press was used.

The present invention was developed in view of the above-mentioned problems, and its purpose is to press fit the input cam, input lever, feed pawl wheel, or stop pawl wheel into the operating shaft in advance, and complete partial assembly. To provide a spring-loading operating device for a cutter and disconnector, in which an operating shaft can be easily mounted on a frame.
Hereinafter, one embodiment of this invention will be described in detail using the drawings. In the following explanation, the vertical direction refers to a direction corresponding to the vertical direction in FIG. 1, the horizontal direction refers to a direction corresponding to the horizontal direction in FIG. 2, and the front-back direction refers to a direction corresponding to the horizontal direction in FIG. 3. The direction corresponds to the left and right direction.

1, 2, 3, and 4 are a front view and a plan view of a spring closing operation device 1 according to the present invention for loading a bow section (not shown) of a bow disconnector. This spring closing operation device 1 consists of a frame 2 that stands facing each other and extends in the front-rear direction, and a closing spring accumulator attached to the front end of the frame 2. An operating shaft drive unit 4 consisting of a motor 3 and the like; an operating shaft 5 that is rotated in an appropriate direction by the operating shaft drive unit 4 and rotatably supported on the frame 2; A closing spring 7 whose force is stored through a closing lever 6 press-fitted into the shaft end, and a closing cam 8 press-fitted into the operating shaft 5 which is rotated by the release of the force of the closing spring 7.
(See Figure 6) A link mechanism 9 attached to the frame 2 is operated to insert the sheath section.
It is composed of etc.

Front end of the frame 2 (lower end in Figure 2)
is provided with an operating shaft drive section 4 comprising the closing spring accumulating motor 3 and a manual accumulating mechanism 11 interlockingly connected to the output shaft 10 of the closing spring accumulating motor 3. That is, at the front end of the frame 2, a drive section frame 12 extending horizontally forward is appropriately attached, and at the right end of the drive section frame 12, a substantially U-shaped motor mounting plate 13 is fixed. . Then, the left side wall 13a of the motor mounting plate 13
A closing spring energy storage motor 3 is appropriately supported. The output shaft 10 of the closing spring energy storage motor 3 extends in a direction perpendicular to the extending direction of the frame 2, that is, in the left-right direction, and the shaft end has a shaft shown in FIG.
As shown in FIG. 5, a cylindrical eccentric cam 14 is attached via a key 15. One end of a transmission link 16 is rotatably fitted to the eccentric cam 14 via a bearing member 17 such as a needle bearing. Note that the transmission link 16 is connected to the eccentric cam 1
4, and the other end is pivotally connected to a feed pawl lever attached to an operating shaft 5, as will be described later. The eccentric cam 14
One end of the manual energy storage shaft 18 constituting a part of the manual energy storage mechanism 11 is inserted into the key 1 .
5, it is integrally connected to the output shaft 10 of the closing spring energy storage motor 3. The manual energy storage shaft 18 is rotatably supported only in the same direction as the output shaft via a clutch 20 press-fitted into the bearing box 19.
Its reversal is regulated. The bearing box 19 is appropriately attached to the right side wall 13b of the motor mounting plate 13, and a tool such as a ratchet trench for manually accumulating energy is attached to the end of the manual energy storage shaft 18 protruding from the right side wall 13b. A tool engaging portion 21 (not shown) is formed to be engaged with the tool engaging portion 21 (not shown). Note that the left side wall 13a of the motor mounting plate 13 extends upward from the right side wall 13b, and its upper end and the upper front end of the frame 2 are connected to each other via a rectangular parallelepiped-shaped stopper block 22 to connect a fastener such as a bolt. A stopper bolt 24 is screwed into the stopper block 22 so that the amount of protrusion of the stopper bolt 24 can be adjusted freely by coming into contact with a pin installed in the stopper lever as will be described later. ing. Further, at the front end of the drive unit frame 12,
As shown in FIGS. 1 and 2, the front end of a manual tripping rod 25 for manually rotating a tripping hook (described later) is movable in the front and rear directions via a U-shaped support member 26. It is supported and urged by a bullet 27 such as a spring so that its tip is always in contact with the support member 26. Although the present embodiment describes a case in which the manual energy storage shaft 18 is provided separately, it is also possible to adopt a configuration in which the output shaft 10 of the closing spring energy storage motor 3 is extended.

At the front end of the opposing frame 2, a third
As shown in FIG. 4 and FIG.
In addition, an engaging portion 30 is formed, which includes an opening portion 29 that is narrower than the inner diameter and opens outward (forward in this embodiment).
The operating shaft 5, which is rotationally driven by the aforementioned operating shaft drive section 4, is mounted in a completely partially assembled state. That is, as shown in FIGS. 6 and 7, the input cam 8 is press-fitted into the operation shaft 5, and a bearing member 3 such as a needle bearing is also inserted into the operating shaft 5.
One inner race 32 is press-fitted close to both sides of the input cam 8. The outer race 33 of each bearing member 31 is provided to be movable in the axial direction, and a fitting portion 34 that can freely fit into the fitting hole 28 of the engaging portion 30 is bored near the center of the outer periphery. Further, a small diameter portion 35 is formed on the outside of the fitting portion 34 so as to be connected to the fitting portion 34 and is movably engaged with the opening 29 of the engaging portion 30 . In addition, the inner side of each outer race 33 (on the input cam side)
is formed to have a smaller diameter than the fitting portion 34, and is integrally fitted with a mounting member 36 for fixing the operating shaft 5 to the opposing frame 2. Each mounting member 36 has a plurality of bolt holes 37.
are drilled therein, and bolt holes 38 corresponding to the respective bolt holes 37 are also drilled in each frame 2.

As shown in FIGS. 2, 3, and 6, a stop pawl wheel 39 and a feed pawl 40 are press-fitted into the right end of the operating shaft 5 in this order from the closing cam 8 side. Feed claw 4 in order from the side
1 and a stop pawl lever 44 having a stop pawl 43 attached thereto are respectively rotatably attached via bearing members (not shown) such as bearings. A pin 45 for pivotally connecting the other end of the transmission link 16 is installed in the feed pawl lever 42 in parallel with the operating shaft 5, and a pin 45 for pivotally connecting the other end of the transmission link 16 is installed in the stop pawl lever 44. A regulation pin 46 is implanted which contacts the tip and regulates the rotation of the stop claw lever 44. Further, a switch operating cam 47 is press-fitted into the rightmost end of the operating shaft 5 and is capable of operating a limit switch (not shown) for regulating the drive of the closing spring energy storage motor 3. The disk-shaped input lever 6 is press-fitted into the left end of the operation shaft 5, and a notch 48 is formed on the outer periphery of the lever 6 to be engaged with a later-described input hook. A pivot pin 49 for pivotally attaching the free end of the spring 7 is installed at a position substantially symmetrical to the notch 48 with its rotation center in between.

As described above, the input cam 8 and the paired bearing member 3
1. Stop pawl wheel 39, feed pawl wheel and input lever 6
The operating shaft 5 is completely partially assembled with press-fitted components, etc.
To attach the outer race 33 of each bearing member 31 to the opposing frame 2, first move the outer race 33 of each bearing member 31 toward the closing cam 8 side, and as shown in FIG. 3
This corresponds to the opening 29 of No. 0. Next, the small diameter portions 35 of each outer race 33 are inserted into the openings 29 of the engaging portions 30 and moved rearward to position the small diameter portions 35 in the fitting holes 28 of the engaging portions 30. Then, each outer race 33 is moved outward and its fitting portion 34 is fitted into the fitting hole 28, and a mounting member 36 integrally provided on the outer race 33 is attached.
and frame 2 through their respective bolt holes 37 and 38.
When it is fixed with a bolt 50 (see FIG. 2) inserted into the frame 2, the completely partially assembled operating shaft 5 is fixed to the frame 2. The operation shaft 5 and the operation shaft drive section 4 are connected by pivotally connecting the other end of the transmission link 16 and the feed pawl lever 42 via a pin 45.

The closing spring 7 is disposed between the pivot pin 49 implanted in the closing lever 6 and a fixing pin 51 that is implanted in the lower rear end of the frame 2 to the left, facing the pivot pin 49. is supported by a spring support device. As shown in FIG. 8, the spring support device includes a pipe-shaped guide cylinder 52 whose base portion is rotatably attached to a fixing pin 51, and a sliding piece 53 which is slidably inserted into the guide cylinder 52. It is constituted by a moving rod 54 whose base is fixed to the sliding piece 53 and whose tip is pivotally connected to the pivot pin 49 of the input lever 6. That is, the base of a guide tube 52 is rotatably attached to the fixed pin 51 via a bush 55, and a closing spring 7 fitted into the guide tube 52 is attached near the base of the guide tube 52. A flange-shaped spring receiver 56 that locks one end of the
are provided integrally. A cylindrical sliding piece 53 made of a wear-resistant synthetic resin such as fluororesin or acetal resin is fitted into the guide tube 52 so as to be slidable in the axial direction. The base of a moving rod 54 disposed at the axial center of the guide tube 52 is integrally fixed. The tip of the moving rod 54 protrudes from the guide tube 52, and a connecting fitting 58 is fixed to the end of the moving rod 54, which is rotatably attached to the pivot pin 49 of the input lever 6 via a bush 57. . Further, near the tip of the moving rod 54, a spring receiver 59 for locking the other end of the closing spring 7 is fitted so as to be movable in the axial direction. The closing spring 7 is fitted into the guide cylinder 52 and is pinched between a spring receiver 56 provided at the base thereof and a spring receiver 59 movably fitted to the movable rod 54. The spring receiver 59 fitted to the moving rod 54 is
It is constantly in contact with the connecting fitting 58 due to the biasing force of the closing spring 7.

Near the front end of the frame 2 is a charging hook 60 that can be freely engaged with the notch 48 of the charging lever 6.
is installed. As shown in FIG. 4, the closing hook 60 engages with the notch 48 when the closing spring 7 is in a charged state, and maintains the loaded state.
A closing electromagnet (not shown) or a manual closing button 61 (see FIG. 10) that is activated by a closing command.
The upper part of the front end of the opposing frame 2 is integrally connected, and the center part of the frame 2 is rotatably supported by a shaft 62 protruding to the left. has been done. At one end of the input hook 60, there is a notch 48 of the input lever 6.
A roller 63 that can be freely engaged with is rotatably provided via a pin 64, and at the other end,
A locking portion 65 is formed in which a lock lever of a later-described closing hook device is locked. In addition,
66 is a recessed portion that prevents interference between the lock lever and the loading hook 60;
It is always biased clockwise in FIG. 4 about the shaft 62 by a bullet 67 such as a torsion spring.

Near the rear end of the opposing frame 2,
As shown in FIGS. 3 and 9, a link mechanism 9 is provided which is operated by the closing cam 8 to load a not-shown section. The link mechanism 9 is
A connecting link 69 that extends in the vertical direction and can be freely connected to the shingle section via a connecting pin 68 attached to the upper end.
and an output link 70 pivotally connected to the lower end of the connecting link 69. That is, the upper end of the connecting link 69 projects above the frame 2, and the upper end of the output link 70 is pivotally connected to the lower end of the connecting link 69 via a pin 71. pin 71
The tip of a regulation lever 72 that regulates the moving direction of the output link 70 is rotatably attached to the frame 2, and the base of the regulation lever 72 is rotatably attached to a support shaft 73 horizontally suspended near the upper rear end of the opposing frame 2. It is attached so that it can move freely. Note that both ends of the pin 71 are loosely fitted into vertically elongated holes 74 bored in the frame 2. The output link 70 is provided in the vicinity of its center so as to be bendable via a roller shaft 75, and its lower end is pivotally connected to the upper end of a support link 76 via a pin 77. The lower end of the support link 76 is
The support link 76 is rotatably provided on a support shaft 78 horizontally suspended near the lower end of the frame 2.
is constantly biased counterclockwise in FIG. 9 about a support shaft 78 by a bullet 79 such as a torsion spring. A roller 80 is attached to the pin 77 that connects the support link 76 and the output link 70, and a first contact 82 of a tripping hook 81 is provided on the roller 80 so as to be able to freely come into contact with it. The tripping hook 81 is rotatably provided at the rear lower end of the frame 2 via a support shaft 83, and is attached to the ammunition 8 such as a torsion spring.
4, it is constantly biased in the counterclockwise direction in FIG. 9 about the support shaft 83. A second contact 85 is formed on the tripping hook 81 and extends in the rear direction opposite to the first contact 82 . A third contact 86 extending in the direction is integrally formed. Between the second contact 85 and the third contact 86, a stop pin 87 that restricts the rotation range of the tripping hook 81 is horizontally suspended on the frame 2. Further, a connector 88 is integrally formed on the tripping hook 81 and projects downward.
This connector 88 has the aforementioned manual tripping rod 25.
The rear ends of are connected accordingly. The second contact 85 of the tripping hook 81 has a plunger 90 of a tripping electromagnet 89 that rotates the tripping hook 81 clockwise in FIG. 9 against the biasing force of the ammunition 84. It is provided so that it can be brought into contact freely. A roller 9 is attached to the roller shaft 75 of the output link 70.
1 is rotatably attached, and this roller 91 contacts the aforementioned input cam 8 and a stopper plate 92 that faces the input cam 8 and is horizontally suspended at the rear of the frame 2, and can freely roll. It is provided.

As shown in FIGS. 4 and 10, on the left side of the frame 2, a closing hook device 93 is mounted which is operated in conjunction with the link mechanism 9 to restrict the rotation of the aforementioned loading hook 60. . That is, the support shaft 7 to which the base of the regulation lever 72 is attached
3 protrudes leftward from the frame 2, and a transmission lever 94 having an isosceles triangular shape is attached to its shaft end.
It is pivoted near the top. The tip of the pin 71 protruding from the long hole 74 described above is rotatably inserted into one bottom corner of the transmission lever 94, and a connecting link 95 extending forward is inserted into the other bottom corner. One end is pivotally connected via a pin 96. A long hole 97 in the same direction as the extending direction of the connecting link 95 is formed at the other end of the connecting link 95, and a dogleg-shaped lock lever 98 is formed in the long hole 97.
A pin 99 implanted at one end of is movably engaged. The lock lever 98 is rotatably provided via a shaft 100 provided on the frame 2, and the lock lever 98 is provided with an ammunition 10 such as a torsion spring.
1 is always biased counterclockwise around the shaft 100 in FIGS. 4 and 10,
The other end can freely come into contact with the locking portion 65 of the input hook 60.

In order to operate the sheath cutter with the above configuration, the closing spring 7 is charged by the operation shaft drive unit 4, and the closing hook 60 is moved against the closing lever 6 by the operation of the manual closing button 61 or closing electromagnet. By releasing the engagement and rotating the closing cam 8 by releasing the closing spring 7, the connecting link 69 connected to the output link 70 of the link mechanism 9 is moved upward by the closing cam 8. When the closing operation is performed and the sheath section is to be tripped, the tripping hook 81 is tripped and the electromagnet 89 or the manual tripping rod 25 is operated to release the support of the output link 70 by the support link 76. At the same time, this is done by releasing a break spring (not shown) that is stored at the time of the closing operation.

In order to charge the closing spring 7 with the closing spring accumulating motor 3 of the operating shaft drive unit 4, first, the closing spring accumulating motor 3 is rotationally driven in an appropriate direction, and the output shaft 1
0. The transmission link 16 is reciprocated by the eccentric cam 14, and the feed pawl lever 42 is reciprocated about the operating shaft 5. Therefore, the feed pawl wheel 40
is rotated clockwise in FIG. 3 by the feed pawl 41, and the operating shaft 5 is simultaneously rotated in the same direction. The operating shaft 5 is a stop claw 4 attached to a stop claw lever 44 whose rotation around the operating shaft 5 is regulated by a stopper bolt 24.
3 is engaged with a stop ratchet wheel 39 press-fitted into the operating shaft 5, so that the rotation does not occur in the reverse direction.

As the operating shaft 5 rotates, the closing spring 7 is loaded with force by the action of the closing lever 6, and the closing hook 60 is moved to the fourth position by the biasing force of the ammunition 67.
As shown in the figure, the closing lever 6 is engaged with the notch 48, and the loading of the closing spring 7 is completed. The closing spring energy storage motor 3 is driven when the closing spring 7 completes energy storage, and at the same time, the switch actuating cam 47 provided at the rightmost end of the operating shaft 5 operates a limit switch (not shown). When the roller 63 of the loading hook 60 is engaged with the notch 48 of the loading lever 6 as shown in FIG. 4, the position of the pin 49 implanted in the loading lever is , is located on the rotational direction side of the extension line connecting the operating shaft 5 and the pin 64 to which the roller 63 is attached, and the closing cam 8 is located as shown in FIG.

To perform a closing operation by releasing the stored force of the closing spring 7, press the closing electromagnet or the manual closing button 61.
, the loading hook 60 is moved against the shaft 62 against the bullet 67.
4 in the counterclockwise direction in FIG. 4 to release the engagement of the roller 63 of the input hook 60 with the notch 48 of the input lever 6. Therefore, the operating shaft 5 is rotated half a turn counterclockwise in FIG. The upper end of the output link 70 is brought into contact with the input cam 8 as shown in FIG. The sheath section is inserted through the . The output link 70 is bent in the opposite direction to that shown in FIG. 9 upon completion of the closing operation, and the loaded state is maintained by a roller 91 provided near the center of the output link 70 coming into contact with a stopper plate 92. It is something that

When the closing operation by releasing the force of the closing spring 7 is completed, the closing spring 7 becomes able to store energy again, and the operating shaft 5 is driven by the operating shaft drive unit 4 to rotate half a turn as described above, and at the same time, the closing lever 6 rotates half a turn. In this case, the closing hook 60 is regulated in its rotation by the closing hook device 93. That is,
The transmission lever 94 of the closing lock device 93 is
By moving the output link 70 upward, the support shaft 73
It is rotated counterclockwise in FIG. 10 about . Therefore, the connecting link 95, which is pivotally connected to the transmission lever 94 through the pin 96, moves rearward, and the lock lever 98, which is connected through the elongated hole 97 and the pin 99, is moved by the action of the ammunition 101. It becomes rotatable in the same direction as the transmission lever 94 about the shaft 100. However, when the closing spring 7 is released, the closing hook 60 is rotated counterclockwise in FIG. 10 about the shaft 62 against the bullet 67 by the outer peripheral surface of the closing lever 6. Therefore, the rotation of the lock lever 98 is restricted by the recess 66 of the insertion hook 60. Here, when the closing spring 7 is charged with energy by the operating shaft drive section 4 and the closing hook 60 engages with the notch 48 of the closing lever 6, the restriction by the recess 66 of the closing hook 60 is released, and the lock lever 98 is released. Machine 10
1, and the other end comes into contact with the locking portion 65 of the input hook 60, and the counterclockwise rotation of the input hook 60 about the shaft 62 in FIG. 10 is restricted. . Therefore, even if the closing electromagnet or the manual closing button 61 is erroneously operated, the closing spring 7, which has been energized again after the closing operation is completed, will not be released. In addition, in the closing hook device 93, when the output link 70 is moved downward by the pulling operation of the shroud section, the transmission lever 94 is rotated in the clockwise direction in FIG. The lock lever 98 is rotated in the same direction as the transmission lever 94 by the connecting link 95, and the other end is released from the locking portion 65 of the closing hook 60, thereby releasing the lock. .

As explained above, according to the present invention, the charging cam is fixed to the operating shaft, and the charging cam is mounted on both sides of the charging cam.
The mounting members are each rotatably attached via a bearing member, a closing lever is fixed to one end of the operation shaft, and a stop pawl wheel and a feed pawl wheel are fixed to the other end, respectively of a pair of opposing frames. An engaging portion is formed with an opening up to the fitting hole at the end of the bearing member, and each of the mounting members is attached with the fitting portion formed on each bearing member fitted into the respective fitting hole. Since the charging cam is connected to each of the frames and can be engaged with a link mechanism provided between the pair of frames and connected to the sheath section, the charging cam, the charging lever, and the feed pawl wheel are connected to the operation shaft. Alternatively, the stop pawl wheel can be fixed in advance by press-fitting, etc., and this completely partially assembled operation shaft can be easily and freely rotatably mounted on the opposing frame, and the complicated Adjustment with the link mechanism is easy, and the spring closing operation device for the shredder can be easily and efficiently assembled.

[Brief explanation of the drawing]

The drawing shows one embodiment of the present invention.
2, 3, and 4 are a front view, a plan view, a right side view, and a left side view of the spring closing operation device according to the present invention, and FIG. 5 is a front sectional explanatory view of the operating shaft drive section. , Fig. 6 is a perspective view of the main parts, Fig. 7 is a cross-sectional explanatory view of the state in which the operating shaft is attached to the frame, and Fig. 8 is a perspective view of the main part.
9 is a cross-sectional explanatory view of a spring support device that supports a closing spring, FIG. 9 is a cross-sectional explanatory view of a link mechanism, and FIG. 10 is an explanatory view of the operation of a closing hook device. 2... Frame, 5... Operating shaft, 30... Engaging portion, 31... Bearing member, 36... Mounting member.

Claims (1)

[Scope of utility model registration request] A charging cam 8 is fixed to the operating shaft 5, and mounting members 36 are rotatably attached to both sides of the charging cam 8 via bearing members 31, and a charging lever 6 is fixed to one end of the operating shaft 5. A stop ratchet wheel 39 and a feed ratchet wheel 40 are fixed to the other end, and a fitting hole 28 is provided at each end of a pair of opposing frames 2.
A fitting portion 30 formed in each of the bearing members 31 is formed with an opening 29 up to
4 are fitted into the respective fitting holes 28, and the respective mounting members 36 are coupled to the respective frames 2,
A spring-loading operating device for a shear cutter, characterized in that a closing cam 8 can be engaged with a link mechanism 9 provided between the pair of frames 2 and connected to the shear cutter.