JP2872645B2 - Trigger for moving suspended objects - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a brake for moving a suspended object used in a recovery operation of a fishing cart used in an electric wire refilling operation.

[0002]

2. Description of the Related Art FIGS. 3A and 3B show an example of an electric wire replacement method.
Next, with reference to FIG. First, as shown in FIG. 3A, a self-propelled machine (4) is attached to one of the old electric wires (3) between the towers (1) and (2), and a large number of fishing wheels (5) are subsequently provided. ) In a row. The fishing cart (5)
As shown in FIG. 3 (c), the open / close plate (8) on the lower side of the upper grooved sheave (7) of the frame (6) is opened and closed to be attached to the old electric wire (3). At the same time, the rope (9) is fixed to each fishing wheel frame (6) at an appropriate length interval, and this front end is connected to the self-propelled machine (4). In addition, a new electric wire (10) is
Rewind from 1) and the bottom sheave (7 ') of each fishing wheel (5)
The upper end is inserted sequentially from the rear row, and the front end is connected to the self-propelled machine (4).

In this state, the self-propelled machine (4) is moved on the old electric wire (3) toward the other steel tower (2). Thereby, each fishing wheel (5) is pulled out at a predetermined interval on the old electric wire (3), and the new electric wire (10) is paid out. Next, the self-propelled machine (4) is collected on the steel tower (2). Then, both ends of the rope (9) are connected to the steel tower (1) as shown in FIG.
(2), and the new electric wire (10) is pulled between them, and at the same time, the fastening between the old electric wire (3) and the steel towers (1), (2) is loosened. At this time, each fishing wheel (5) is turned to the same side, and the new electric wire (10) is fixed to the steel towers (1) and (2). After this,
Each fishing wheel (5), rope (9) and old electric wire (3) remain.

At this time, a new electric wire (10) and a rope (9)
Actually hangs between the towers, the lowest part of which is located approximately halfway between the towers on flat ground, and leans lower between the towers on slopes. Therefore, if both ends of the old electric wire (3) and the rope (9) are detached from the steel tower and one of them is to be recovered, the fishing wheel (5) is weighed by its own weight and the new electric wire (1) is used.
0) dashing towards the bottom of
It may fall off and hit another power line, so it cannot be recovered safely.

In view of the above, there has been known a suspended object moving brake for safely and smoothly recovering suspended objects such as a fishing cart.
One example is shown below with reference to FIGS. 3D, 4A, 4B and 5 (Japanese Patent Publication No. 57-56282). First, in FIGS. 3 (d) and 4 (a), two stationary grooved wheels (13) and (14) are horizontally arranged on the side surface of the horizontal arm (12 ') on the upper part of the body (12) with a space between them. To the axis (1
5) Pivot according to (16). An intermediate portion of the lever (17) is pivotally connected to a central portion of a side surface of the body (12) by a shaft (18). A movable sheave (19) is mounted on the upper end of the lever (17) by a shaft (20) and positioned below the sheaves (13) and (14). A detachment prevention spring (21) is attached in tension between the tip of the lever (17) and the upper part of the machine body (12). A slit (22) is provided in the lower part of the body (12) in an inclined manner, and an annular groove (24) of a spring stopper (23) is slidably fitted to the slit (22) as shown in FIG. .
The adjusting bolt (25) is horizontally screwed into the screw hole of the rear projection of the spring stopper (23).

[0006] A braking spring (26) is attached in tension between the lower part of the lever (17) and the adjustment bolt (25). The stopper lever (27) is moved by the shaft (28) to the body (1
It is pivotally attached to the side of the slit (22) of 2). A notch engaging portion (29) having a shape compatible with the round bar-shaped front projection of the spring stopper (23) is formed at the tip of the stopper lever (27).

According to the above configuration, in use, as shown in FIG. 5, on the steel tower (1) side, the fixed sheaves (13) (14) and the movable sheave (19) are attached to the overhead electric wire (10). The body (12) is suspended from above and below. Then, the spring stopper (23) is positioned at the upper end of the slit (22), and the locking portion (29) of the stopper lever (27) is locked and held therein. As a result, the lever (17) is pulled in the same direction as the derailment prevention spring (21) by operating the braking spring (26). That is, the movable sheave (19) is pressurized against the new electric wire (10), the frictional force between each sheave (13), (14), (19) and the new electric wire (10) is increased to prevent the vehicle from slipping off and braking. And do.

Next, the rope (9) connecting the row of fishing carts (5) is used as a connecting rope and the lever (17) or the body (1) is connected.
2), and the old electric wire (3) is connected to the lower part of the stopper lever (27) as an operation rope. In order to take the center of gravity, a weight is appropriately attached to the body (12), the lever (17) and the like. In this state, on the side of the tower (2), the rope (9) and the old electric wire (3) are connected to a rope or the like derived from the winch drum (30), and the tower (2)
Around the pulleys (31) and (32) attached to the drum (3)
Wind up to 0). In this case, each fishing wheel (5) and the body (12) are towed by the rope (9), and the old electric wire (3) is shifted so that no tensile force is applied to the stopper lever (27).

Then, each fishing wheel (5) on the steel tower (1) side from the lowest part of the new electric wire (10) is braked by the main brake, and moves down to the lowest part while maintaining the rope connection interval. At this time, each of the fishing wheels (5) on the side of the tower (2) from the lowest part naturally moves up while maintaining the rope interval. When the fishing cart (5) arrives at the tower (2) one after another, it is collected. When the last row of fishing wheels (5) reaches the lowest part of the new electric wire (10) and only climbs, the old electric wire (3) is pulled and the stopper lever (27) is released from the spring stopper (23). Then, the spring stopper (23) moves the lever (1) of the slit (22).
7) Sliding to the lower part on the side, the braking spring (26) relaxes. That is, only the de-spring spring (21) acts,
Thereafter, the aircraft (12) and the previous fishing wheel (5) are lightly moved upward. After that, the brake was collected on the steel tower (2),
Carry to the next place of use.

[0010]

The problem to be solved is that the new electric wire (10) is sandwiched between the stationary sheave (13) (14) and the movable sheave (19) by the springs (21) and (26). When the fishing wheel (5) suspended by the new electric wire (10) is pressed and held by the elastic force to brake the transition, the pressing direction by the movable groove wheel (19) is oblique to the spring elastic direction. Since only the component of the spring elastic force contributes to pressurization, and is only clamped at three points by the three sheaves (13) (14) (19), the pressing force becomes insufficient. Therefore, during the transition, the braking force is insufficient, and the sheaves (13), (14), and (19) are liable to slip off, and the work cannot be performed smoothly and safely.

SUMMARY OF THE INVENTION An object of the present invention is to provide a suspended object moving brake which can stably hold an electric wire by increasing a pressing force of a sheave to an electric wire to enable safe and smooth operation. .

[0012]

SUMMARY OF THE INVENTION The present invention relates to an airframe having first and second vertical arms extending downward from both ends of a horizontal arm, and a plurality of stationary bodies mounted on the horizontal arm. With a grooved wheel,
An intermediate portion is rotatably supported on a center portion of the first vertical arm portion, and a lower portion is connected to the first vertical arm portion by a spring. A lever on which a movable sheave and a weight of a predetermined weight are attached and suspended, and a rod screw portion vertically screwed into a bent piece extending laterally from the lower end of the second vertical arm portion. And a support spring locked and held at a predetermined position by a locking piece, and an insertion hole provided in a lateral piece of the L-shaped plate material is inserted into the bar screw portion and placed on the upper end surface of the support spring; and An L-shaped support plate vertically movably held in a vertically elongated slit hole provided in the second vertical arm portion; and a support spring mounted on a vertical piece of the support plate so as to substantially face the stationary grooved wheel. And a second movable sheave that is resiliently supported by and is adjusted in position by advancement and retreat of the bar screw portion. It is characterized in that the airframe is attached by pressing and holding it with the moving grooved car, the suspended object on the overhead electric wire is connected to the airframe, the airframe and the suspended object are entrained, and the suspended object movement is braked. .

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a suspended object moving brake according to the present invention will be described below with reference to FIGS. 1 and 2 (a) and 2 (b). FIGS. 1 and 2 (a) and 2 (b) show a side view, a front view and a rear view, respectively, of a brake (33) according to the present invention. In the figure, (34) is an airframe, (35) and (36) are stationary groove wheels, (37) is a lever, (38) is a support spring,
(39) is a support plate, and (40) is a second movable groove wheel.

The body (34) has first and second vertical arms (34b) (3) extending downward from both ends of the horizontal arm (34a).
4c). And the horizontal arm (34
a) and the stationary grooved wheels (35) and (36) at predetermined positions of the inverted U-shaped holding portion (34d) formed at the intersection of the first vertical portion (34b) and the horizontal arm portion (34a). ) (42)
To attach each.

The lever (37) has an intermediate portion rotatably supported by a shaft (43) at the center of the first vertical arm portion (34b) and a lower portion of the first vertical arm portion (34b). It is connected to the first vertical arm (34b) by a horizontal spring (44) provided below. And the fixed groove wheel (35)
The first movable groove wheel (45) substantially opposed to (36)
6) Attach and a predetermined weight (for example, 5 kg) at the lower end
The weight (47) is suspended.

The support spring (38) is connected to the second vertical arm (34).
c) is loosely fitted to a bar screw portion (48) vertically threaded to a bent piece (34e) extending laterally from a lower end portion of the bent piece (34e) substantially at the middle of the bar screw portion (48). ) Is locked and held at a predetermined position by a locking piece (49) arranged above.

The support plate (39) is made of an L-shaped plate material, and an insertion hole (39b) provided in a lateral piece (39a) is inserted into a bar screw portion (48) to form an upper end surface of a support spring (38). Put on. In addition, as shown in FIGS. 1 and 2 (b), a vertically elongated slit hole (34f) provided in the second vertical arm portion (34c).
The support plate (39) and the back plate (51) are connected to the support plate (39) by the shaft (50).
4f), it is vertically movably held by the second vertical arm (34c).

The second movable groove wheel (40) has a slit hole (3).
4f) to the vertical piece (3) of the support plate (39) by means of an axis (52) connecting the support plate (39) and the back plate (51) transversely.
9c) is mounted substantially opposed to the stationary sheaves (35), (36). Thereby, the second movable grooved wheel (40) is supported by the support spring (3).
8) is elastically supported, and the height position is adjusted by the advance and retreat of the bar screw portion (48).

The operation of the present invention based on the above configuration will now be described. First, the weight (47) is lifted, and the bar screw portion (48) is retracted downward, so that the first and second movable groove wheels (4
5) (40) is lowered. Next, the stationary sheaves (35) and (36) and the first and second movable sheaves (45) are sandwiched between the overhead electric wire (new electric wire) (10) on the steel tower (1) side shown in FIG. When the (46) is arranged, the weight (47) is lowered by its own weight, and the overhead wire (10) is pressed by the first movable grooved wheel (45) according to the pressing force and the horizontal spring (44) according to the weight of the weight.
Press with the elastic force of In addition, the bar screw portion (48) is advanced upward to raise the second movable grooved wheel (40) and to contact the overhead electric wire (10). When the bar screw portion (48) is further advanced upward, the support spring (38) is pressed by the support plate (39) and contracts, and the second movable groove wheel (40) is elastically repelled according to the contraction amount. Makes elastic contact with the overhead electric wire (10).

That is, the first and second movable groove wheels (45) (4)
0) is applied to the overhead electric wire (10), and each sheave (35)
(36) The overhead electric wire (10) is changed to 4 by (45) and (40).
The friction force is increased by pinching at the point, preventing derailment and stable braking. At this time, the weight (47) also has a function of taking the center of gravity together with the pressurization, and the elastic pressure of the second movable grooved wheel (40) against the overhead electric wire (10) appropriately advances or advances the bar screw portion (48). You can retreat and adjust. Moreover, since the overhead electric wire (10) is pressurized along the elastic elastic direction of the support spring (38),
The spring elasticity directly contributes to pressurization.

Next, similarly to FIG. 5, the rope (9) connecting the row of fishing wheels (5) is connected to a part of the body (34) as a connecting rope, and the old electric wire (3) is used as an operating rope. A part of the lever (37) is connected above the shaft (43) (however, the upward direction in FIG. 1 is defined as the brake transfer direction). In this state, on the tower (2) side, the rope (9) and the old electric wire (3) are connected to a rope or the like derived from the winch drum (30), and the pulleys (31) and (32) attached to the tower (2).
And wound on the same drum (30). In this case, each fishing wheel (5) and the body (34) are pulled by the rope (9), and the old electric wire (3) does not apply a pulling force to the lever (37).

Then, each fishing wheel (5) on the side of the tower (1) from the lowest portion of the new electric wire (10) is braked by the brake (33) according to the present invention, and the lowest portion is maintained while maintaining the rope connection interval. Move down to. At this time, the tower (2)
Each fishing wheel (5) on the side naturally moves up while maintaining the rope interval. When the fishing cart (5) arrives at the tower (2) one after another, it is collected. The last row of fishing carts (5) is a new electric wire (1
When reaching the lowest part of 0) and only climbing, old electric wire (3)
And the lever (37) is rotated clockwise in FIG. 1 to slightly raise the weight (47). Then, the first movable sheave (45) separates from the overhead electric wire (10) and only the second movable sheave (40) operates, and thereafter, the body (3)
4) and the previous fishing wheel (5) are lightly moved upward. Thereafter, the main brake (33) is collected on the steel tower (2) and transported to the next place of use.

[0023]

According to the present invention, there is provided a brake for moving a suspended object used for a recovery work of a fishing cart used for an electric wire refilling operation and the like. And the suspended object are entrained, and when braking the suspended object movement, the overhead electric wire is pressed and clamped at four points by two stationary grooved wheels and two movable grooved wheels, and the body of the brake is attached. In addition, since one of the movable sheaves is pressurized by the weight of the weight and the other movable sheave is pressurized by the spring elasticity acting in the pressurizing direction, the pressure holding and the braking force of the overhead electric wire are increased. As a result, the vehicle can be securely prevented from coming off and braking can be performed safely and smoothly.

[Brief description of the drawings]

FIG. 1 is a side view showing an embodiment of a suspended object moving brake according to the present invention.

FIG. 2A is a front view of a suspended object moving brake according to the present invention. (B) is a rear view of the suspension moving brake according to the present invention.

3 (a) and 3 (b) are explanatory views showing a method for rewiring electric wires.
(C) is a side view of the fishing wheel used for it. (D) is a front view showing an example of a conventional suspended object moving brake.

FIG. 4A is a side view showing an example of a conventional brake for moving suspended objects. 4B is a sectional view taken along line XX of FIG.

FIG. 5 is an explanatory view showing an embodiment of using the conventional brake shown in FIGS. 3 (d), 4 (a) and 4 (b).

[Explanation of symbols]

 33 Brake 34 Body 34a Horizontal arm 34b First vertical arm 34c Second vertical arm 34e Bend piece 34f Slit hole 35 Stationary groove wheel 36 Stationary groove wheel 37 Lever 38 Support spring 39 Support plate 39a Horizontal piece 39b Insertion hole 39c Vertical piece 40 Second movable groove wheel 45 First groove wheel 47 Weight 48 Bar screw part 49 Locking piece

Claims (1)

(57) [Claims] 1. An airframe provided with first and second vertical arms extending downward from both ends of a horizontal arm, a plurality of stationary sheaves mounted on the horizontal arm, and an intermediate portion comprising: A first movable groove wheel rotatably supported at the center of the first vertical arm portion and a lower portion connected to the first vertical arm portion by a spring, and a first movable groove wheel substantially opposed to the stationary groove wheel at each of upper and lower ends; A lever having a weight of a predetermined weight attached thereto and suspended therefrom, and a bar screw portion which is screwed in a vertical direction on a bent piece extending laterally from a lower end of the second vertical arm portion, and is loosely engaged therewith. A support spring locked and held at a predetermined position by a piece, and an insertion hole provided in a lateral piece of the L-shaped plate material is inserted into the bar screw portion and placed on the upper end surface of the support spring; An L-shaped support plate held up and down freely in a vertically elongated slit hole provided in the arm portion, and mounted on a vertical piece of the support plate so as to substantially face the stationary groove wheel. A second movable groove wheel that is elastically supported by the support spring and is adjusted in position by the advancing and retreating of the rod thread portion. The overhead wire is pressurized and held between the stationary groove wheel and the movable groove wheel. A suspended object movement brake, comprising: attaching an airframe, connecting a suspended object on an overhead electric wire to the airframe, and entraining the aircraft and the suspended object, and braking the suspended object movement.