JPH073768Y2 - Angle changeable grip stick - Google Patents

Description

[Detailed Description of the Invention] (Industrial field of application) This invention makes it possible to switch the opening degree of the gripping claws of the gripping stick individually on the fixed side and the movable side in the live work of high-voltage distribution lines. The present invention relates to an angle-switching type gripping stick that can approach a gripping target object in a wide range from a limited work position and can grip a target having a large diameter.

(Prior Art) A conventional gripping stick used as an indirect live wire tool is
Two kinds of tools were prepared in which the opening angle of the grip claw was set to a constant value in advance, and the sticks were exchanged each time according to the object to be gripped, and the required work was carried out while gripping the object.

(Problems to be solved by the invention) However, in the case of this conventional gripping stick, it is necessary to replace the stick with a stick that fits the target object at a limited working position, which leads to a decrease in workability and a large diameter. However, it has a disadvantage that it is difficult to approach the object to be grasped, such as the grasping claw structure which is difficult to be applied to the object to be grasped.

(Means for Solving the Problems) In this invention, therefore, a multi-step opening in which the angle can be individually set in a plurality of steps with respect to the fixed-side gripping claw and the movable-side gripping claw mounted on the upper end of the outer cylinder. By providing the setting structure, various movable objects can be easily grasped by tilting the movable side grasping claws by operating the handle of the center shaft slidably provided in the outer cylinder.

Therefore, the angle-switching type gripping stick according to the present invention slidably supports the center shaft in the longitudinal direction in a long outer cylinder, and a gripping claw main body is provided at the upper end of the outer cylinder. Is provided with a fixed-side gripping claw and a movable-side gripping claw that can be opened and closed via a center link that interlocks with the center shaft, and the opening angle of each of these gripping claws can be individually set in multiple stages according to the object to be gripped. A multi-step setting mechanism that can be set is provided. The multi-step setting mechanism includes a set pin for fixing one of a hole provided in the grip claw body and an arbitrary number of set holes provided in the fixed side grip claw, and the movable part. From the set pin that fixes the hole provided on the side gripping claw and one of the set holes provided on the center link that rotates the movable gripping claw with respect to the fixed side gripping claw in conjunction with the center shaft. The lower part of the outer cylinder is for driving the middle shaft. The work handle provided for this operation handle is obtained by the configuration in which the handle return means consisting of a ratchet mechanism and bullet machine.

(Operation) The fixed-side gripping claw and the movable-side gripping claw are individually set to any desired angle in two or three stages by moving the set pins via the knobs. By this angle switching operation, the optimum approaching direction of both gripping claws with respect to the gripping target is selected, and an appropriate opening angle of both gripping claws corresponding to the diameter of the gripping target is obtained. Then, the movable side gripping claw tilts to the fixed side gripping claw in accordance with the backward movement of the center shaft due to the operation of pushing down the operation handle, and grips the object. Further, the gripped state is maintained even if the pressing operation force is released by the ratchet mechanism, but if the operation of the ratchet mechanism is released, the gripped state is also released by the handle returning means.

(Embodiment) An embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1, a long insulating tubular outer cylinder 1 is provided with a center shaft 2 slidably supported in the axial direction inside thereof, and a grip claw is provided at the upper end of the outer cylinder 1 shown at the left end of the same figure. The main body 3 is fixed, and the fixed-side gripping claw 4 and the movable-side gripping claw 5 having a multi-step opening setting mechanism detailed in FIGS.
Is mounted on the shaft 6, and the connecting metal fitting 7 attached to the tip of the center shaft 2 and the center link 8 fixed to the shaft 6 are pin 9
The movable side gripping claws 5 can be opened and closed and tilted relative to the fixed side gripping claws 4 by interlocking with the sliding movement of the center shaft 2 by connecting with. The means for slidingly driving the center shaft 2 includes an operation handle 10 attached to the lower portion of the outer cylinder 1. The operation handle 10 is assembled in a mechanism box 12 together with a ratchet mechanism 11 and a return spring for the handle which will be described later. Therefore, the movable side gripping claw 5 is moved to the fixed side gripping claw 4 via the center link 8 by driving the center shaft 2 to retract and slide rightward in the drawing by the pressing force of the operator with respect to the operation handle 10. The tilting operation is performed to hold the object. Note that 13
Is an insulative operating handle fixed to the lower end of the mechanism box 12,
14 is a band 15 on the outer circumference of the outer cylinder 1 in the vicinity of the grip claw body 3.
It is a stick hook fixed with, and its fixing position can be changed arbitrarily. Reference numeral 16 denotes an umbrella-shaped safety brim that is attached at a proper position on the outer circumference of the outer cylinder 1 between the operation handle 10 and the stick hook 14.

The multistage opening degree setting mechanism for the fixed-side grip claw 4 and the movable-side grip claw 5 has the following configuration as shown in FIGS. 2 and 3. That is, in order to locate the lower ends of the movable side gripping claws 5 with the gripping surfaces facing the center link 8 on the lower ends of the both sides of the fixed side gripping claws 4, the gripping claws having a U-shaped cross section are arranged. The fixed side gripping claw 4 and the movable side gripping claw 5 are mounted on the upper end opening of the main body 3 by using the shaft 6 with the shaft holes 19, 21, 23 and 6A formed in these members aligned with each other.
Also, the center link 8 is commonly supported by the grip claw body 3. Then, an opening degree setting piece 17 formed in a dorsal fin-like projection on the outer surface portion opposite to the holding surface of the fixed side holding claw 4, and an opening degree setting piece 17 on an arc centered on the shaft hole 19 are appropriately provided. An appropriate number of set holes 18 such as three as shown in the figure, which are provided at regular intervals, and a well-known knob 28 with a built-in elastic spring, which are fixed to the outer surface of the grip claw body 3 and are provided in the body 30. Through any one of the set holes 18 and the set pin 29 that can be selectively inserted therein, the opening degree setting means for the fixed side gripping claw 4 is configured. Similarly, the movable side gripping claws 5 are provided in the center link 8 on an arc centered on the shaft hole 23 so that the opening degree can be arbitrarily set independently of the fixed side gripping claws 4. An appropriate number of set holes 24, such as two, and a knob 26 of the same type as the knob 28 are fixed to the lowermost end of the movable-side grasping claw 5 and any of the set holes 24 is passed through a hole 22 provided at that portion. One of them is a set pin 27 that can be selectively inserted, and this knob 26 is extended and exposed to the side of the grip claw body 3 opposite to the knob 28 so that setting can be facilitated from each shaft hole 19 and 6A. Each of the fixed side gripping claw 4 and the gripping claw main body 3 is configured to allow a sufficient circular movement amount of the knob 26 in response to the set movement of the knob 26 and the opening / closing tilting movement of the movable side gripping claw 5 on the arc of the distance. Opening degree setting means for the movable side gripping claw 5 by the openings 20 and 46 formed in the adjacent wall portions in the shape of a bow, respectively. Configure and Aru.
The tip of the center link 8 has a link connecting pin 9
As a result, the fixed side gripping claw 5 of the movable side gripping claw 5 is attached via the center link 8 in accordance with the sliding movement of the center shaft 2 in the axial direction. Opening / closing tilting motion with respect to 4 can be obtained.

According to the multi-step opening setting mechanism of this embodiment for the fixed-side gripping claw 4 and the movable-side gripping claw 5, the fixed-side gripping claw 4 is set by the knob 28 in three-step opening setting determined by the three set holes 18. It can be selected by the positioning operation of the set pin 29 used, and also the movable side gripping claw 5 can be set in two stages of opening determined by the two set holes 24 provided in the center link 8 independently of the fixed side gripping claw 4. Similarly, the position can be freely selected by positioning the set pin 27 with the knob 26. Therefore, as illustrated by the phantom line in FIG. 1, the fixed side and the movable side are arranged so that the optimum open angle state can be obtained for the size of the gripping target such as the approach direction or angle to the gripping target, or the diameter. Both gripping claws 4,
The angle settings of 5 are individually selected in combination, so that the required gripping work can be carried out safely and conveniently at a limited working position without exchanging the gripping stick with another one as before. It becomes possible to perform in a stable posture.

As shown in FIGS. 4 and 5, the operation handle 10 for driving the center shaft 2 is mounted on the mechanism box 12 mounted on the lower portion of the outer cylinder 1 together with the ratchet mechanism 11 and the handle returning means. That is, one end of the mechanism box 12 is fixed to the lower end of the outer cylinder 1 together with a suitable sleeve that guides the end of the center shaft 2 to the inside, and the other end is appropriately fixed to the end of the handle 13 using a mounting sleeve 44. I am doing it. The operating handle 10 has an operating lever 31 in which the lower part of the curved portion is formed into a forked shape or a fork shape.
Is integrally formed into a substantially L shape, and the tip end of the actuating lever 31 is supported by a huddle shaft 32 at a portion where the center of the bottom of the mechanism box 12 is bulged, while the free end of the operating portion of the operating handle 10 is the mechanism box. It is extended from the upper end opening of 12 toward the handle 13 side. Then, an arcuate ratchet 36 disposed between the operating levers 31 and fixed to the upper end opening of the mechanism box 12, a lock lever 33 that engages with its teeth, and the lock lever 33 is always engaged with the ratchet 36. A ratchet mechanism 11 and a mounting shaft 34 that supports a substantially middle portion of the lock lever 33 on the curved portion of the operation handle 10 together with a spring 35 that applies elastic force to the operation handle 10 are configured. Further, the operating lever 31 of the operating handle 10 swings between the operating levers 31 corresponding to a portion on the axis line extension of the center shaft 2 at a predetermined position in which the operating lever 31 tilts leftward in the drawing around the shaft 32 at the tip thereof. A movable shaft 38 is provided, which horizontally bridges the shaft 37 and freely penetrates the swing shaft 37 in the orthogonal direction, and
One end of the movable shaft 38 is connected by a pin 39 to the terminal end of the center shaft 2 led out into the mechanism box 12, while the handle shaft is
As described above, the movable shaft 38, which is loosely inserted into the swing shaft 37 in order to allow a slight amount of deviation of the swing shaft 37 due to the movement on a predetermined arc centering on the center 32, is in the fixed side direction of the handle 13. The seat 40 fixed with a nut 41 and the swing shaft
A spring retainer 42 screwed and fixed is provided at a portion retracted to the 37 side, and a handle return compression spring 43 is mounted between the spring retainer 42 and the sleeve 44. Reference numeral 45 indicates a cover of the mechanism box 12.

According to such an operation handle mechanism, the ratchet mechanism 11
When the lock lever 33 of is released,
Due to the elastic force of 43, the movable side gripping claw 5 is automatically returned to the set original open angle position via the spring bearing 42, the movable shaft 38, the center shaft 2, the connecting fitting 7 and the center link 8. A force is always applied, and the operation handle 10 is also rotated in a counterclockwise direction about the shaft 32 through the swing shaft 37 and the operating lever 31 that are in contact with the end of the spring receiver 42 in conjunction with the return operation. Is given. On the other hand, a pressing force is applied to the operation handle 10 in a state where the object is positioned between the two gripping claws 4 and 5, so that the operating lever 31, the swing shaft 37, and the ends thereof come into contact with each other, and Through the spring bearing 42 and the movable shaft 38, which are pressed to the right, the center shaft 2 slides back rightward against the elastic force of the handle return compression spring 43, and therefore, via the connecting fitting 7 and the center link 8. Since the movable gripping claw 5 is tilted by the fixed gripping claw 4, the object can be firmly gripped between the gripping claws 4 and 5, and the gripping state of the object is determined by the operation handle 10. Even if the pressing operation force on the is released, the ratchet mechanism 11 holds it securely. Further, due to the action of the elastic force of the handle return compression spring 43, the lock lever 33 and the ratchet 36 in the ratchet mechanism 11 are operated.
Since the operation handle 10 can be held at an arbitrary position under the engagement with, the movable side gripping claw 5 also has the open angle position and the fixed side gripping claw 4 set according to the position of the operation handle 10. The tilt can be maintained at any intermediate position. Therefore, the fixed-side gripping claw 4 and the movable-side gripping claw 5 are individually and selectively opened at the optimum orientation and opening angle for the gripping work while corresponding to the approaching direction of the gripping target or the size of the target such as a large diameter. After setting the degree appropriately, firmly position the object between both gripping claws 4 and 5 through a simple operation with the operation handle 10 with a stable posture in a limited work environment such as a high place. It is possible to safely and smoothly end the required gripping work in a gripped and fixed state.

In the above structure, at least the outer circumference of the outer cylinder 1 and the outer circumference of the handle 13 located below the safety brim 16 are covered with appropriate shrinkage tubes for the purpose of protecting members or preventing slipping. In addition, the interlocking mechanism between the operating handle 10 and the center shaft 2 is not limited to the above-mentioned configuration, and various means for transmitting the movement of the operating handle 10 to the center shaft 2 can be adopted, and a handle return compression spring can be used. 43 can also be arbitrarily changed so as to be mounted in a proper place between the outer cylinder 1 and the center shaft 2 in place of the above-described configuration which is built in the mechanism box 12. Further, the present invention can be applied not only to the above-mentioned application as an indirect hot-line tool such as a hot stick, but also to a tip active tool in various robots. In the case of such an application example, the operation handle 10 is used. Not only the manual drive system, but also a hydraulic drive system, an electric drive system, or the like, which is appropriately controllable under connection with other devices, can be used to form a cooperative drive operation mechanism for the entire control system. Further, in this embodiment, a plurality of setting holes 18 and 24 are provided in the fixed side gripping claw 4 and the center link 8 to make the gripping claw body 3
The movable side gripping claw 5 is provided with one hole 30 and 22, respectively, and the opening degree of both gripping claws is selected by positioning the set pins 27 and 29. One hole is provided in each of the claw 4 and the center link 8,
A plurality of setting holes may be provided in the grip claw body 3 and the movable grip claw 5.

(Effect of the Invention) As described above, the angle-switching type gripping stick according to the present invention has the fixed side gripping claw and the fixed side gripping claw on the upper end of the elongated outer cylinder slidably supporting the center shaft in the longitudinal direction. A movable side gripping claw that can be freely opened and closed in conjunction with the center shaft is attached to the claw, and the fixed side and movable side gripping claws are provided in the holes provided in the gripping claw body and in the fixed side gripping claw. A set pin that fixes one of an arbitrary number of set holes and a hole provided on the movable side gripping claw and a center link that rotates the movable side gripping claw with respect to the fixed side gripping claw in conjunction with the center shaft. Since a multi-step setting mechanism consisting of a set pin that fixes one of an arbitrary number of set holes is provided, the operator grips the object according to the direction of approach to the object to be grasped or the object such as a large diameter object. Fixed-side gripping claw and movable-side grip at the optimal orientation and opening angle for work The opening angle of the nail can be set individually and optionally.

Further, the ratchet mechanism maintains the gripped state even if the pressing force of the operation handle is released, and if the operation of the ratchet mechanism is released, the gripping state is easily released by the handle returning means.

Therefore, it is possible to approach the object in a wide range from a limited work position such as a high place, which firmly grips and fixes the object between both fixed and movable gripping claws through a simple operation with the operation handle in a stable posture. It is easy to perform the required gripping process efficiently, safely and reliably in the working state.

Further, since the adjustment of the above-described multi-step setting mechanism is performed by each set pin, the individual opening degree selection processing for both the fixed side and movable side holding claws is extremely simple.

[Brief description of drawings]

FIG. 1 is a partially cutaway front view of an angle switching type gripping stick according to an embodiment of the present invention, and FIG. 2 is a partial sectional plan view of a fixed side gripping claw and a movable side gripping claw having a multi-step opening setting mechanism. FIG. 3 is an exploded perspective view of the same including the grip claw body,
FIG. 4 is a central cross-sectional side view of a mechanism box having an operating handle, a ratchet mechanism, and a compression spring for returning the handle, and FIG. 5 is a plan view of the mechanism box having the operating handle. In the drawing, 1 is an outer cylinder, 2 is a center shaft, 3 is a gripping claw body, 4 is a fixed side gripping claw, 5 is a movable side gripping claw, 6 is a mounting shaft, 7 is a connecting fitting, 8 is a center link, and 10 is a center link. Operation handle, 12 is a mechanism box, 18 and 24 are set holes, 27 and 29 are set pins, 31 is an operating lever, 33 is a lock lever, 36 is a ratchet, 37 is a swing shaft, 38 is a movable shaft, and 43 is a return. It is a spring for use.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (71) Applicant 999999999 Kayo Denki Kogyo Co., Ltd. 2-1, 6 Hamamatsucho, Minato-ku, Tokyo (72) Inventor Tomio Obata 5-2-1, Ebara, Shinagawa-ku, Tokyo Stocks Company Saneisha Works (72) Inventor Kaoru Tadaka 1-3-3 Uchisaiwaicho, Chiyoda-ku, Tokyo Within Tokyo Electric Power Company (72) Inventor Kazumi Kaneko 4-83-3 Shibaura, Minato-ku, Tokyo Stocks Company Kandenko (72) Inventor Keiji Yoshitomi 1-5-1, Kiba, Koto-ku, Tokyo Fujikura Electric Line Co., Ltd. (72) Inventor Heizaburo Uryu 2-6 Hamamatsucho, Minato-ku, Tokyo Stock company Kayo Electric Industry Co., Ltd. (56) Bibliography Sho 61-192615 (JP, U) JP 61-48203 (JP, B2) JP 37-29207 (JP, Y1) JP 36-23945 (JP) , Y1)

Claims (1)

[Scope of utility model registration request] 1. An elongated outer cylinder slidably supporting a center shaft in a longitudinal direction, and a grip claw body is provided at an upper end of the outer cylinder. The grip claw body has a fixed side grip claw and the center shaft. A movable side gripping claw that can be opened and closed via a center link interlocking with
Each of these gripping claws is equipped with a multi-step setting mechanism capable of individually setting the opening angle in a plurality of steps according to the object to be gripped. The set pin for fixing one of the set holes provided on the side gripping claw and the hole provided on the movable side gripping claw, and the movable side gripping claw interlocking with the center shaft to the fixed side gripping claw. It consists of a set pin that fixes one of an arbitrary number of set holes provided in the center link to be rotated, and an operation handle for driving the center shaft is provided at the lower part of the outer cylinder, and the operation handle has a ratchet mechanism. An angle-switching type grip stick, which is provided with a handle return means including a bullet and a bullet.