JPH036093Y2 - - Google Patents

Description

[Detailed explanation of the invention] (Industrial application field) This invention is suitable for working on live lines such as high-voltage distribution lines.
This relates to a grip stake in which a worker holds one end of the stake and hooks a hook provided at the tip of the stake to the eye ring of equipment or tools installed at a high place to operate the stake.

(Prior art) In conventional hotstacks, the hook at the upper end of the hotstay is hooked onto the eyering of equipment or tools as described above, and the eyering, etc., is attached by an operator holding the entire hotstay by hand and rotating it. It was tightening and loosening.

(Problem that the invention aims to solve) However, in the case of this conventional example, the rotational force at the worker's hand is directly transmitted to the hook at the upper end of the stay, which requires force to operate, and it is difficult to rotate the entire stay. It has the disadvantage of being unstable and difficult to operate.

(Means for solving the problem) Therefore, this invention provides a rotatable center shaft inside the outer cylinder, a hook is provided at the upper end of this center shaft, this center shaft is rotationally driven by an appropriate power source, and the upper end of the center shaft is provided with a hook. The hook can be moved in and out from the top of the outer cylinder as needed,
This allows the operator to hold the outer cylinder and hook the hook onto the eye ring, etc., and rotate the hook simply by operating a switch.

The structure of this invention is that a center shaft is supported in a long outer cylinder so as to be rotatable and slidable in the longitudinal direction of the outer cylinder. A hook is provided which pivotally supports the base. A sliding body that can be moved and fixed in the longitudinal direction is provided on the outer periphery, and a protrusion that projects from the inside of the sliding body into the annular groove through a long hole bored in the longitudinal direction of the outer cylinder. The hole is provided so that the hook can freely protrude from the upper end of the head portion by movement of the projecting body within the elongated hole, and a power source for rotationally driving the center shaft is provided within the outer cylinder.

(Function) To use this to tighten or loosen the eye ring of equipment or tools at high places, the operator should hold the lower part of this grip stay and start from the upper end of the outer cylinder of the grip stay. Hook the protruding hook onto the eye ring, lower the sliding body, and fix it.
As a result, the lower part of the hook is pulled toward the central shaft and enters the groove in the head, and the opening of the hook is hidden in the head. The eye ring is thus completely gripped by the hook. In this state, when the switch that activates the rotational power source of the center shaft is turned on, the center shaft and the hook rotate, and the eye ring is tightened or loosened.

(Example) An example of this invention will be described below with reference to the drawings. 1 is an outer cylinder, 2 is a cylindrical center shaft rotatably and slidably supported in the outer cylinder 1, and 3 is the lower end of the center shaft 2 inside the outer cylinder 1 (on the right side in FIG. 1). This is a cylindrical center shaft joint that is connected and fixed to the center shaft joint 3, and a spline receiver 4 is provided on the inner periphery of the opening at one end of the center shaft joint 3.
Reference numeral 5 denotes a hydraulic motor built in the lower part of the outer cylinder 1. A spline shaft 7 is fixed to the tip of a drive shaft 6 of the hydraulic motor 5, and a spline receiver 4 of the center shaft joint 3 is attached to the outer periphery of the spline shaft 7.
is crowned, whereby the rotation of the drive shaft 6 of the hydraulic motor 5 is transmitted to the center shaft 2. 8 is a switch box provided adjacent to the hydraulic motor 5, and on the outer surface of the switch box 8 are provided two switch buttons 8a (one of which is not shown) for forward and reverse rotation of the hydraulic motor 5. 9 is outer cylinder 1
10 is an oil pipe whose one end is connected to the hydraulic motor 5 and the other end is led out to the outside of the outer cylinder 1; 11 is an oil pipe inside the switch box 8; This is the lead wire of switch 8b. 12 is a cylindrical head rotatably supported by a socket 13 provided at the upper end of the outer cylinder 1 (on the left side in FIG. 1); 14 is a hook base fixed to the upper end of the center shaft 2; The base 14 is approximately cross-shaped. 15 is a hook-shaped hook whose base is rotatably supported in a hole 14a bored at one end of this hook base 14, and this hook 15 is equipped with a spring (not shown).
Therefore, it is always in the state shown in FIG. 1, that is, tilted with respect to the center shaft 2, with one end open. Reference numeral 16 denotes an auxiliary rod protruding from the hook base 14 at the opposite end of the rotation support portion of the hook 15; 17 is a groove with a cross-shaped cross section provided in the head portion 12;
The hook base 14 can be freely inserted and slid inside. Reference numeral 18 denotes two annular protrusions fixed to the outer periphery of the central shaft joint 3 with a gap between them; 19 an annular groove formed by the two annular protrusions 18; 20;
21 is a ring loosely fitted into this annular groove 19; 21 is a long hole provided in one side of the outer cylinder 1 in the longitudinal direction of the outer cylinder 1;
2 is a pedestal provided on the outer periphery of the outer cylinder 1 on the opposite side of the elongated hole 21; 23 is a sleeve-shaped sliding body provided slidably on the outer periphery of the outer cylinder 1 so as to cover the pedestal 22; This protrusion 24 is a protrusion in which the inner periphery of the sliding body 23 and the outer periphery of the ring 20 are connected and fixed, and this protrusion 24 freely passes through the elongated hole 21 . 25 is a linear ratchet tooth provided on the outer surface of the base 22; 26 is a through hole bored in the sliding body 23; 27 is a ratchet lever pivotally supported on a bearing 28 protruding from the sliding body 23; Tip claw 27a
are adapted to mesh with the ratchet teeth 25 through the through holes 26. Reference numeral 29 denotes a spring provided between the inside tip of the ratchet lever 27 and the sliding body 23. This spring 29 causes the pawl 27a of the ratchet lever 27 to always engage the ratchet teeth 2.
It is pressed to 5. 30 is a shaft of this ratchet lever 27, this shaft 30 is supported at an eccentric position of a cam 31, and this cam 31 is pivotally supported by the bearing 28. 32 is an eccentric lever that rotates this cam 31; 33 is a band 34 on the upper outer periphery of the outer cylinder 1;
35 is an umbrella provided in the middle of the outer cylinder 1 to mark the insulation boundary.

In this embodiment, hold the handle 9 and the lower part of the outer cylinder 1 in your hands, hook the hook 15 on the eye ring (not shown) of the equipment installed at a high place, and then
Slide 3 downward. At this time, the pawl 27a of the ratchet lever 27 comes into contact with the gently sloped surface of each tooth of the ratchet teeth 25, so that the sliding body 23 can be moved because the pawl 27a of the ratchet lever 27 comes into contact with the gently sloped surface of each tooth of the ratchet teeth 25. 3 is pulled downward within the outer cylinder 1, and the center shaft 2 slides downward (to the right in the figure). As the center shaft 2 slides downward, the hook 15 comes into contact with the edge of the groove 17 on the upper end of the head portion 12, and rotates against the force of the spring. As shown in FIG. At this time, the free end of the hook 15 comes close to the tip of the auxiliary rod 16. As shown in FIG. 4, the sliding member 23 is fixed by the pawl 27a of the ratchet lever 27 meshing with the ratchet teeth 25. However, the pawl 27a of the ratchet lever 27 may not fit properly between the teeth of the ratchet teeth 25, so when the eccentric lever 32 is turned, the cam 31 rotates, causing the ratchet lever 27 to rotate.
The shaft 30 moves, the pawl 27a fits into the back of the tooth, the sliding body is completely fixed, and the hook 15 does not wobble. In this manner, the sliding body 23 does not slide upward (to the left in FIGS. 1, 3, and 4) of the outer cylinder 1 due to the ratchet mechanism. Then, the base of the hook 15 enters the head portion 12 as described above, and the hook 15
The eye ring (represented by the dotted line A in FIG. 5) is gripped and does not come off the hook 15 unnecessarily. When one of the switch buttons 8a is pressed in this state, the hydraulic motor 5 is activated, the drive shaft 6 and the spline shaft 7 are rotated, and the rotation is transmitted to the center joint 3, the center shaft 2, the hook 15, and the head portion 12. The eye ring gripped by the hook 15 can therefore be rotated and tightened. Also, when the other switch button 8a of the hydraulic motor 5 is pressed, the hydraulic motor 5 rotates in the opposite direction.
You can also loosen the eye ring. To remove the eye ring from the hook 15 after completing the operation, push the ratchet lever 27 against the spring 29, remove the pawl 27a from the ratchet teeth 25, and in this state push the slider 23 upwards on the outer cylinder 1. . As a result, the hook 15 protrudes from the upper end of the head portion 12, and the force of the spring causes the hook 15 to open as shown in FIG. 1, allowing the eye ring to be removed.

The movable range of this sliding body 23 is the length of the elongated hole 21 bored in the outer periphery of the outer cylinder 1, and within this range, it can be fixed at any position by the ratchet mechanism. Therefore, the degree of insertion of the hook 15 into the head portion 12 can also be adjusted as desired.

In this embodiment, the hydraulic motor 5 is used as the rotational power source for the center shaft 2, but the present invention is not limited to this, and any other suitable power source can be used.

It goes without saying that it is possible to hook the hook of this device onto an object such as the eye ring, grip it as described above, and then simply pull the device and pull the object off.

(Effects of the invention) This invention has the above structure, and includes a center shaft that is rotatable inside the outer cylinder and slidable in the longitudinal direction of the outer cylinder.
A hook is rotatably provided at the upper end of this center shaft, a rotational power source is provided at the lower end of this center shaft, and the power source rotates the center shaft and the hook, so the operator only needs to support the hot stake of this invention with his/her hands. There is no need for the operator to turn the hotstab by hand as in the past.

In addition, this center shaft slides in the longitudinal direction of the outer cylinder by moving a sliding body provided on one side of the outer cylinder along the longitudinal direction of the outer cylinder, and as a result, the hook 15 moves in and out from the upper end of the head. When the hook is locked to an eye ring or the like of a tool, the base of the hook is inserted into the groove of the head part and fixed, and the eye ring or the like can be grasped by closing the opening of the hook. Therefore, the operation of gripping and releasing the object with this hook is extremely easy, and the object will not come off unnecessarily even during rotation or pulling operations.

The sliding member of this invention may be pulled down manually, by power, or by a handle or lever using a lever. Furthermore, since this invention rotates the hook within the outer cylinder using power, it can also be used for tightening long screws, etc., and can therefore be used for purposes different from the conventional hook that is rotated for each stay.

In this way, this invention allows the hook to easily grasp and rotate the object, and therefore the grip stick can be stably supported and operated, making it useful for attaching and detaching equipment and tools at high places. Line work can be done quickly and work efficiency can be improved.

[Brief explanation of the drawing]

Figure 1 is a partially cutaway front view of this device, Figure 2
The figure is an enlarged left side view of the same, Fig. 3 is a partially enlarged sectional view of the sliding body of this invention, and Fig. 4 is a partially enlarged sectional view of the sliding body of this invention with the sliding body shifted downward. 5 is a partial sectional view showing the hook of this invention inserted into the head portion. In the figure, 1 is the outer cylinder, 2 is the center shaft, 3 is the center shaft joint, 4 is the spline receiver, 7 is the spline shaft, 12 is the head, 14 is the hook base, 15 is the hook, 17 is the groove, and 19 is the annular shape. groove, 20 is a ring, 21 is a long hole, 22 is a pedestal, 23 is a sliding body, 2
4 is a projecting body, 25 is a ratchet tooth, 26 is a through hole, 2
7 is a ratchet lever, and 30 is a shaft.

Claims (1)

[Scope of utility model registration request] A center shaft is supported in a long outer cylinder so as to be rotatable and slidable in the longitudinal direction of the outer cylinder.
A hook is provided with a base pivotably supported so as to be tiltable with respect to the axial direction of the center shaft. An annular groove is provided on the outer periphery of the lower part,
A sliding body that can be moved and fixed in the longitudinal direction is provided on the outer periphery of the lower part of the outer cylinder, and a protrusion that projects from the inside of this sliding body into the annular groove through a long hole bored in the longitudinal direction of the outer cylinder. The elongated hole is provided so that the hook can freely protrude from the upper end of the head portion by movement of the projecting body within the elongated hole, and a power source for rotationally driving the center shaft is provided in the outer cylinder. A rotary grip stand that is characterized by: