JPH0471311A - Tool for attaching and detaching cable head - Google Patents

Abstract

PURPOSE:To operate an inserting tool and a removing tool by one jack by selectively connecting wire cables of the inserting and removing tools to be operated when receiving tension from the cable to the jack for generating a predetermined tension by the rotating operation of an operating handle. CONSTITUTION:When an outer pipe 48 is moved in a direction of an arrow, a cable head 21 can be inserted into a bushing 15. When an operating handle 41 is reciprocated to be rotated to move the pipe 48 in the direction indicated by the arrow, a wire 61b is pulled, thereby removing the head 21.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a cable head attachment/detachment tool, and more particularly to a cable head attachment/detachment tool with improved workability.

[Background technology]

When a cable is connected to a bushing of an electrical device such as a switch, it is connected via a cable head provided at the tip of the cable.

Conventionally, cable heads were attached and detached directly by the operator by hand, but when working in a cabinet that houses a multi-circuit switch, for example, there was not much work space available. This has the disadvantage that it forces the worker into an unreasonable posture, making it difficult to apply the necessary force for the job, making it difficult to attach and detach.

Therefore, consideration has been given to using an insertion tool and an extraction tool. For example, the insertion tool receives insertion force from a jacking means that generates a pressing force, and the extraction tool receives a pulling force from a jacking means that generates a tensile force. It is designed to receive.

[Problem to be solved by the invention] However, with conventional cable head attachment/detachment tools, the jacking must be changed depending on the type of work (insertion work and extraction work), which has the disadvantage of poor workability. . Furthermore, the number of parts increases, leading to an increase in costs.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a cable head attachment/detachment tool that allows the insertion and extraction tools to be operated with a single jack, thereby improving workability and reducing costs.

[Means to solve the problem]

In order to achieve the above-mentioned object, the present invention connects the wire cables of the insertion tool and extraction tool, which operate when receiving a predetermined tension force from the wire cable, to a jack that generates a predetermined bow tension force by rotating an operating handle. This invention provides a cable head attachment/detachment tool configured to allow selective connection.

That is, the cable head attachment/detachment tool of the present invention has the following configuration.

The insertion tool consists of a slider fixed at a predetermined position in the cable processing section via a fixing means, and an outer cylinder slidably arranged around the outer periphery of the slider and having a cable head gripping means. By applying a tensile force through the cylinder, the outer cylinder is raised.

That is, the outer of the wire cable is fixed to the lower end of the outer cylinder, and the wire led out from the outer is fixed to the upper end of the slider.

The means for fixing the slider consists of a base metal that is placed on the channel base provided at the bottom of the cabinet so that it can expand and contract depending on the width of the channel base, and a base metal that fits into this base metal and allows the cable head to be inserted. This is an adjustment rod whose length can be adjusted depending on the position, and the adjustment rod has a configuration in which the lower part of the slider can be inserted into an opening provided at the upper end of the adjustment rod.

Furthermore, the downward movement of the outer cylinder and the slider is restricted by engagement between the latch member and the latch engagement groove.

The extraction tool consists of a contact rod having a contact surface at the upper end, and an outer cylinder that is slidably arranged around the outer circumference of the contact rod and has means for gripping the cable head, and is pulled through a wire cable. By applying force, the outer cylinder descends. That is, the outer of the wire-cable is fixed to the lower end of the contact rod, and the wire led out from the outer is fixed to the upper end of the outer cylinder. The upward movement of the outer cylinder and the contact rod is restricted by the engagement of the latch member and the latch engagement groove.

The jack has an inner pipe having an opening at one end, and an outer pipe having a slightly larger diameter than the inner pipe and having an opening at one end into which the opening of the inner pipe is inserted.
It has an operation handle that moves the outer pipe so as to shorten the insertion length of the inner pipe, and the outer of a wire cable of a tool selected from an insertion tool or an extraction tool is fixed to the other end of the inner pipe. At the same time, a wire cable led out from the outer is fixed to the other end of the outer pipe. Movement of the outer pipe toward the inner pipe is restricted by engagement between a latch member provided on the outer pipe and a latch engagement groove formed on the inner pipe.

This latch member and latch engagement groove rotate the outer pipe at a 90° angle.
It is configured to be disengaged when rotated.

[Effect]

In the above configuration, both the insertion tool and the extraction tool are configured to operate when receiving a predetermined tensile force from the wire cable, and the jack that generates the predetermined tensile force is further provided with:
Since the wire cable can be selectively connected depending on the type of work (inhibition work, pulling work), the jack required for both works can be used. Therefore, there is no need to change the jaws for each job, and it is possible to improve workability and reduce costs.

〔Example〕

Hereinafter, the cable head attachment/detachment tool of the present invention will be explained in detail.

FIG. 1 shows an embodiment of the present invention, and shows a manhole.

A base part 10 is provided in an opening (not shown) such as a hand hole, and an outer box 11 having a cable processing part 14 at the lower part is placed on the base part 10 with a partition plate 9 interposed therebetween. The cable 13 is drawn into the cable processing section 14 from the above-mentioned opening, and each cable pen 21
As shown in the figure, the terminal 15a of the bushing 15 and the conductor (not shown) of the cable 13 are electrically connected to each other. Attachment and detachment of the cable head 21 is performed by a jack 40 placed outside the outer box 11, and by operating the jack 40, an insertion tool and an extraction tool (both of which will be described later) are placed in the cable processing section 14 depending on the type of work. ) is now working. Regarding the switch 16, the movable electrode 173 mechanism section 18. Operation rod 19. Fixed electrode part 2
0, etc. are shown in the figure, but the details are omitted here.

However, the type, size, etc. of the switch are not limited, and it may be an electrical device other than the switch (for example, a transformer). Reference numeral 12 denotes a door attached to the outer box 11, which can be opened to operate the switch 16, attach and detach the cable head 21 mentioned above, and the like.

When inserting the cable pen 21 in the outer box construction 1 equipped with such a multi-circuit switch, an insertion tool 30 as shown in FIG. 2 is used.

In FIG. 2, the taper 21a of the cable head 21
An adapter 22 is attached to the. For example, as shown in FIG. 3, there are multiple types of adapters 22 available that are compatible with various cable head shapes, such as a cable head without a taper, and each adapter 22 has a hook member 32 of an insertion tool 30. It has a flange 22a that engages with the flange 22a.

The insertion tool 30 grips the wire cable 3 by engaging the hook member 32 and the adapter 22 and by abutting the protruding body 33 and the fixing band 24.
Cable head 21 receives the tensile force transmitted from 1
It is designed to push up. This insertion tool 30 is
The adjustment rod 50 fixed to the base metal 23 is arranged at a predetermined position in the cable processing section 14 described above, and the adjustment rod 50 is moved up and down with respect to the slide rod 52 inserted inside to adjust the length as appropriate. By changing the insertion tool 30
can be adjusted to a different insertion start position of the cable pen 21 depending on various electrical devices. In addition, the adjustment rod 50
is positioned by the latch member 51.

FIG. 4 shows an adjustment rod 50, which has a latch engagement groove 52a in the hollow part of an outer cylinder 57 having a ball plunger 53 at the upper end.
A slide rod 52 having a diameter is inserted, and a latch portion 51 provided on the outside of the outer cylinder 57 is engaged with a latch engagement groove 52a of the slide rod 52. Since the latch member 51 is biased by the elastic member 51a, the adjustment rod 5
When changing the length of 0, the latch member 51 is rotated against the elastic force, and the latch member 51 is inserted into the latch engagement groove 52a.
This can be done after separating from the Slide rod 52
is placed on a scaffold such as the base metal 23 mentioned above at its lower end, and is provided with a support section 56 to which rubber or the like is pasted on the back side.
A tab pin 55 that is biased by the elastic member 54 protrudes from the support portion 56 .

FIGS. 5(a) and 5(b) show a case where the channel base 25 provided inside the outer box 11 is used as a foothold for the adjustment rod 50 described above. That is, the base metal 23 having the retaining mechanism 232 is connected to the channel base 25. It can be expanded and contracted appropriately according to the width of the base 25, and is placed on the channel base 25 after adjusting the length. The tab pin 55 of the rod 50 is fitted.Also, the scaffolding is not limited to the base metal 23 (it is also possible to place a piece of wood or the like on the channel base 25 and place the adjustment rod 50 on top of it. Alternatively, it may be installed directly on another member without using the channel base.In this case, the tab pin 55 is retracted against the elastic force of the elastic member 54, so that it does not get in the way.

FIG. 6 ta+, (b) shows the insertion tool 30, in which a slider 38 having an axotiment 36 at the lower end that engages with the ball plunger 53 of the adjustment rod 50 is inserted into the hollow part of the outer cylinder 39, and the slider 38 is inserted into the hollow part of the outer cylinder 39. A latch member 37 provided on the outside of the slider 39 is connected to the latch engagement groove 3 formed in the slider 38.
8a is engaged.

This latch member 37 is biased by an elastic member 37a, and when engaged with the latch engagement groove 38a, the outer cylinder 39
It restricts the downward movement of. wire cable 31
outer 31a, and a lead-out portion 34 at the tip of the outer 31.
is fixed below the outer cylinder 39, and a wire 31b led out from the lead-out part 34 is fixed to the tip of the slider 38 via a stopper 35. The other end of the wire cable 31 is selectively connected to a jack 40 depending on the type of work, and the jack 40 connects the wire 31.
When b is pulled, since the slider 36 is fixed, the outer 32 is pulled, which causes the outer cylinder 3 to
9 is set to rise.

Further, when pulling out the cable head 21 from the outer box 11, a pulling tool 60 as shown in FIG. 7 is used.

In FIG. 7, the extraction tool 30 has a gripping member 62a for gripping the cable, and grips the cable head 21 via the holding member 62a. A tensile force is transmitted to the wire cable 63 from the jack 40 described above, and when the tensile force is transmitted to the tip thereof, the extraction tool 30
is adapted to descend and pull out the cable head 21 from the bushing 15.

FIG. 8 shows an extraction tool 60, and a contact rod 61 having a contact portion 62 with rubber pasted on the upper end.
is inserted into the hollow part of the outer cylinder 67, and the latch member 64 provided outside the outer cylinder 67 is biased by the elastic member 64a to engage the latch engagement iff+6 formed on the contact rod 61.
12. The gripping member 62 has a slidable holding fitting 62a, and by pulling it out using a claw formed on the holding fitting 62a, the cable head 21 can be held as shown by the two-dot chain line. . A protrusion 68 formed on the upper edge of the gripping member 62 is inserted between the cable head 21 and the partition plate 9, and is adapted to pull down the upper edge of the cable head 21 when it is pulled out. The outer 63a of the wire cable 63 is fixed to the lower end of the contact rod 62 via the lead-out part 65 at the tip thereof, and the wire 63b led out from the lead-out part 65 is connected to the outer cylinder 6.
7 via a stopper 66. The other end of the wire cable 63 is selectively connected to a jack 40 depending on the type of work, and when the jack 4o pulls the wire 63b, the outer cylinder 67 is pulled down using the contact rod 61.

FIG. 9 shows a jack 40, in which an operating handle 41 having a handle 41a rotates around a rotating shaft 42 supported by a bearing 44 provided on a base 49. The tip is pivotally connected to the handle sleeve 43 via a shaft 45. The handle sleeve 43, the outer pipe 48, and the inner pipe 46 fixed to the fixed part 47 constitute a wire tensioning mechanism, and when the operating handle 41 is rotated back and forth, the outer pipe 48 moves in the direction of the arrow. This allows the wire cable 31 or 63 (wire cable selectively introduced depending on the type of work) introduced into the inner pipe 46 to be pulled.

Figure 10 shows the wire tensioning mechanism of Jyatsuki 4o,
An inner pipe 46 having an opening at one end, and an outer pipe 48 having a slightly larger diameter than the other inner pipe 46 and having an opening at one end into which the opening of the inner pipe 46 is inserted.
and a handle sleeve 43 that moves in the direction of the arrow following the rotational movement of the operating handle 41 described above. An elastic member 7 is attached to one end (opening side) of the outer pipe 48.
A latch member 71 biased by 1a is provided, and the latch member 71 engages with a latch engagement groove 46a formed in the inner pipe 46.

The engagement between the latch member 71 and the latch engagement groove 46a restricts movement of the outer pipe 48 in the direction opposite to the arrow.

The handle sleeve 43 has a latch member 70 biased counterclockwise by an elastic member 70a, and the latch member 7
0 engages with a latch engagement groove 48a formed in the outer pipe 48.

The latch member 70 and the latch engagement groove 48H engage with each other when the handle sleeve 43 moves in the direction of the arrow.
is trying to follow. Therefore, by reciprocating the operation handle 41 described above, the inner pipe 4
6, the distance traveled by the outer pipe 48 is increased. With this configuration, the lead-out part 73 of the wire cable 31.63 is inserted into the insertion hole 46b formed at the other end (opposite the open part) of the inner pipe 46, and the wire cable 31.63 is led out from the lead-out part 73. wires 31b, 63b
When the wires 31b and 63b are guided to the fixing hole 48b formed at the other end of the outer pipe 48 (on the side opposite to the opening) and the stopper 72 is fixed thereto, the wires 31b and 63b are fixed to the outer pipe 48. ．． Alternatively, a pulling force can be transmitted to the extraction tool 60. Furthermore, when the outer pipe 48 is rotated by 90 degrees, the latch member 71 moves into the latch engagement groove 4.
6a can be disengaged, and the outer pipe 48
can be restored to its predetermined position.

Below, the operation will be explained separately for insertion and withdrawal.

(When inserting 11, place the base metal 23 on the channel base 25 provided in the outer box 11 according to the width of the channel base 25, and insert the tab pin 55 of the adjustment rod 50 into the tab hole 26 of the base metal 23. While fitting, the support portion 56 is placed on the base metal 23 and the adjustment rod 50 is erected.

An insertion tool 30' is attached to the upper part of the adjustment rod 50, and the length of the adjustment rod 50 is adjusted so that the insertion tool 30 is at the insertion start position of the cable head 21. Next, the hook member 32 of the insertion tool 30 is engaged with the collar 22a of the adapter 22 attached to the cable head 21. After that, pull out the wire cable 31 of the insertion tool 30 from the outer box 11,
It is connected to a jack 40 placed outside the outer box 11. That is, the lead-out portion 73 of the wire cable 31 is connected to the inner pipe 4.
The wire 31b inserted into the insertion hole 46b of No. 6 and led out from the lead-out hole 73 is taken out from the fixing hole 48b of the outer pipe 48, and the stopper 72 is fixed there. Then, when the operating handle 41 is reciprocated and the outer pipe 48 is moved in the direction of the arrow, the wire 31b is pulled through the handle sleeve 43 and the outer pipe 48, thereby causing the outer cylinder 39 of the insertion tool 30 to move upward. For movement, the cable pend 21 held by the outer tube 39 can be inserted into the bushing 15.

(2) Inserting the protrusion 68 formed on the gripping member 62 of the extraction tool 60 between the cable pen 21 and the partition plate 9 during extraction,
The contact portion 62 of the contact rod 61 is brought into contact with the partition plate 15a.

Then, the wire cable 63 of the extraction tool 60 is connected to the jack 40 in the same manner as at the time of insertion. Then, when the operating handle 41 is reciprocally rotated and the outer pipe 48 is moved in the direction of the arrow, the wire 61b is pulled and the outer cylinder 67 of the extraction tool 60 is inserted into the outer cylinder 67 for pre-reading. The gripped cable pen 21 can be pulled out.

As can be seen from the above embodiments, the same jack 40 can be used for the insertion tool 30 and the extraction tool 60 by simply replacing the wire cables of both tools. It is possible to improve performance and reduce costs.

〔Effect of the invention〕

As explained above, according to the cable head attachment/detachment tool of the present invention, the wire cables of the insertion tool and extraction tool, which operate when receiving a predetermined tensile force from the wire cable, can be applied with a predetermined tensile force by rotating the operation handle. Since the structure is such that it can be selectively connected to the jack that is generated, the insertion tool and the extraction tool can be operated with one jack, improving work efficiency and reducing costs.

[Brief explanation of drawings]

Fig. 1 is an explanatory diagram showing an embodiment of the present invention, Fig. 2 is an explanatory diagram showing when the cable head is inserted, Fig. 3 is an explanatory diagram showing the cable head adapter, and Fig. 4 is an explanatory diagram showing the adjustment rod. Cross-sectional views, Figures 5 (a) and fb) are explanatory views showing the case where the channel base is used as a scaffold for the insertion tool, and Figure 6
The figure is a sectional view showing the insertion tool, FIG. 7 is an explanatory view showing when the cable head is pulled out, and FIG. 8 is a sectional view showing the extraction tool.
Figure 9 is an explanatory diagram showing the jack, Figure 10 is a sectional view showing the wire tensioning mechanism of the jack, Explanation of symbols Foundation section Door cable processing section Bushing Switch mechanism section Fixed electrode section Cable head adapter Base metal removal prevention mechanism Fixed band channel base turbo hole 30 Wire cable outer 31b Hook member 33 Lead-out part 35 Actuator/v timing 2a - Outer box cable terminal Movable electrode operation Rondo collar insertion tool Wire protrusion stopper latch member 37a Slider latch engagement groove outer cylinder 40 Operation handle 413 Rotating shaft handle sleeve bearing 45 Inner pipe latch engagement groove insertion hole 47 Outer pipe latch engagement groove elastic member jack handle shaft fixing part base adjustment rod 51 Slide rod latch engagement groove ball plunger elastic member 55 Support part 57 Latch member tab pin outer cylinder extraction tool 61 Contact part wire cable outer 63b Latch member 65 Outer cylinder 70 Latch member contact rod wire lead-out part latch member

Claims (7)

[Claims] (1) A cable head attachment/detachment tool that attaches and detaches a cable head raised from an opening such as a manhole or handhole to electrical equipment such as a switch housed in a cabinet, etc. via a wire cable. an insertion tool that inserts the cable head into the bushing of the electrical device when subjected to a predetermined tensile force; an extraction tool that extracts the cable head from the bushing when a predetermined tensile force is applied via the wire cable; A cable head attachment/detachment tool comprising a jack that can selectively connect the wire cables of the insertion tool and the extraction tool, and applies a predetermined tensile force to the wire cable by operating an operation handle. . (2) The insertion tool has a slider fixed at a predetermined position via a fixing means, and an outer cylinder slidably arranged around the outer periphery of the slider and having means for gripping the cable head, 2. The cable head attachment/detachment tool according to claim 1, wherein an outer of the wire cable is fixed to a lower end of the outer cylinder, and a wire led out from the outer is fixed to an upper end of the slider. (3) The fixing means includes a base metal that is arranged on the channel base provided at the lower part of the cabinet so as to be expandable and retractable according to the width of the channel base, and a base metal that fits into the base metal and connects the cable. Claim 2: The adjusting rod comprises an adjusting rod whose length can be adjusted according to the insertion start position of the head, and the adjusting rod has a configuration in which the lower part of the slider can be inserted into an opening formed at an upper end of the adjusting rod. Cable head attachment/detachment tool as described. (4) The cable head attachment/detachment tool according to claim 2, wherein downward movement of the outer cylinder and the slider is restricted by engagement between a latch member and a latch engagement groove. (5) The extraction tool has a contact rod having an abutment surface at an upper end, and an outer cylinder that is slidably disposed around the outer circumference of the contact rod and has means for gripping the cable head, Attaching and detaching the cable head according to claim 1, wherein the outer of the wire cable is fixed to the lower end of the contact rod, and the wire led out from the outer is fixed to the upper end of the outer cylinder. tool. (6) The cable head attachment/detachment tool according to claim 6, wherein upward movement of the outer cylinder and the contact rod is restricted by engagement of a latch member and a latch engagement groove. . (7) The jack includes an inner pipe having an opening at one end, and an outer pipe having a slightly larger diameter than the inner pipe and having an opening at one end into which the opening of the inner pipe is inserted. and an operation handle for moving the outer pipe so as to shorten the insertion length of the inner pipe, and the wire of a tool selected from the insertion tool or the extraction tool is attached to the other end of the inner pipe. An outer part of the cable is fixed, and a wire cable led out from the outer pipe is fixed to the other end of the outer pipe, and the outer pipe has a latch member provided on the outer pipe and a latch member formed on the inner pipe. Movement toward the inner pipe side is restricted by engagement of the latch engagement groove, and the latch member and the latch engagement groove are disengaged by rotating the outer pipe by 90 degrees. The cable head attachment/detachment tool according to claim 1, comprising: