CN104917098A - Trip pulley capable of automatic locking - Google Patents

Abstract

The invention discloses an automatic locking somersault block, which belongs to the field of power supply systems. Including the hook and the pulley, the hook is composed of a base and an inverted U-shaped hanging ring on the base, there is an opening on one side between the hanging ring and the base, a pulley I is hinged inside the hanging ring perpendicular to both sides of the hanging ring, and the upper end of the hanging ring is hinged A connecting plate driven by its own gravity, the end of the connecting plate is hinged with an arc-shaped locking pin, the arc-shaped opening of the locking pin is opposite to the hook, and the other end of the locking pin seals the opening between the hanging ring and the base. The invention provides an automatic locking somersault block. The opening of the lead wire in the block can be automatically closed and opened, ensuring the safe operation of the operator, avoiding the cumbersome manual control of the staff, and making the operation more convenient and quick.

Description

self-locking tumbler block

technical field

The invention relates to a somersault block, in particular to a somersault block which can automatically realize locking, and belongs to the field of power supply systems.

Background technique

Since the vast majority of overhead transmission lines in my country are located in the wilderness, the electrical part of the line is affected by electromechanical, climate and environmental pollution. Rust and other defects. With the development of our country's economy, all sectors of the national economy, including people's daily electricity consumption, have put forward the requirements for continuous and reliable power supply. In order to prevent power supply enterprises from stopping power supply due to equipment testing, maintenance and processing equipment defects, causing losses to industrial and agricultural production and causing troubles to people's lives, power supply enterprises have carried out live work to ensure the safe and economical operation of the power grid. The live work on the wire far away from the tower requires personnel to climb the insulating ladder to reach the working position. We generally choose to use somersault tackle tools to hang the insulated soft ladder on the wires suspended in the air more than ten meters. Most of the somersault tackles are equipped with a hook for hanging on the cable, and the lower end of the hook is connected to a tackle for connecting the ladder. The hook includes a base at the lower end and a hanging ring on the base. The hanging ring is similar to an upside-down U-shaped structure. There is an opening on the side where the hanging ring is not connected to the base. The hanging ring is hung on the cable through the opening. The base is used to connect the pulley. The tackle includes an inverted U-shaped bracket, a pulley is fixed in the bracket, and the soft ladder slides on the pulley through ropes. The base and the tackle are mostly connected by a connecting shaft, and the connecting shaft is perpendicular to the base and the tackle, so the tackle can rotate 360° relative to the base through the connecting shaft. The somersault block is a ladder block controlled from a distance on the ground. To use this block, you must first throw a thin nylon rope on the wire (with a heavy hammer or a shooting gun), and then use this nylon rope to pull the block to the wire. Pull it onto the wire in a "somersault" way. After the tackle is hung on the conductor, rely on the center of gravity of the tackle to ensure that the tackle will not fall off the conductor. Then pass the ladder head, insulated soft ladder and hang them on the wire. The heel block is hung on the wire by relying on the center of gravity of the block to ensure that the block will not fall off from the wire. In the loose state, and there is an opening between the hanging ring and the base in the hook, when the personnel are working on the wire, it is easy to knock down the somersault block, and the fall of the somersault block is easy to cause the risk of injury caused by falling objects. At the same time, if the somersault tackle falls and does not resume normal suspension, after the operator completes the work and goes down to the ground, the ladder cannot be passed back to the ground, and the operator needs to climb the ladder again to the wire position and hang the somersault tackle. So people want to seal the opening with a latch. In the Chinese patent application (CN201420610615.1), the outer wall of the upper end of the opening side of the hanging ring is provided with a locking pin through a chute, but the opening and closing of the locking pin are all coordinated by nuts and studs, so manual tightening is required How to ensure the safety of people climbing the ladder without affecting the normal use of the block and allow the block to automatically lock after it is hung on the wire, so that the ground personnel can control the suspension on the wire The tumbler block removal lock allows the tumbler block to be disassembled to the ground.

Contents of the invention

The technical problem to be solved in the present invention is to provide an automatic locking somersault block. The opening of the wire in and out of the block can be automatically closed and opened to ensure the safe operation of the operator, avoid the cumbersome manual control of the staff, and make the operation easier. Easy and fast.

In order to solve the problems of the technologies described above, the technical solution adopted in the present invention is:

The self-locking somersault block includes a hook and a block. The hook is composed of a base and an inverted U-shaped hanging ring on the base. One side of the U-shaped opening of the hanging ring is connected to the base. There is a gap between the other side of the hanging ring and the base. Opening, the upper end of the hanging ring is hinged to a connecting plate, and the other end of the connecting plate is hinged with an arc-shaped locking pin. The locking pin and the connecting plate are tied with ropes. The pin hole through which the pin passes, and the lower end of the locking pin is provided with a protruding head which prevents the locking pin from slipping out of the pin hole.

The further improvement of the technical solution of the present invention lies in that: the side end of the side with an opening between the hanging ring and the base is an upwardly curved arc structure.

The further improvement of the technical solution of the present invention lies in that: the hanging ring is provided with a handle for the rope to tie.

The further improvement of the technical solution of the present invention lies in: a pulley I is hinged between the two sides of the hanging ring.

Owing to having adopted above-mentioned technical scheme, the technical progress that the present invention obtains is:

A pulley is hinged in the hanging ring to facilitate the movement of the heel block on the cable, and at the same time reduce the wear and tear on the cable caused by the inevitable sliding of the heel block on the cable, prevent leakage accidents and improve safety performance.

The side end of the side with an opening between the hanging ring and the base is an upwardly curved arc structure, which acts as a guide for the cable to enter the interior of the somersault block, making the cable enter the opening between the hanging ring and the base more smoothly.

The locking pin can seal the opening between the hanging ring and the base, and the locking pin can seal the opening between the hanging ring and the base by gravity, ensuring the reliability of the connection between the heel block and the cable, avoiding the falling of the heel block, and ensuring The safety of the operator; after the operation is completed, the pulley can be separated from the cable by pulling the rope tied to the connecting plate in advance. The closing and opening of the opening between the hanging ring and the base only requires the operator to operate on the ground, avoiding artificial Ascend to operate the locking pin, the operation is convenient and quick.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is a structural representation of the closed state of the present invention;

Fig. 3 is a schematic diagram of the hook structure;

Among them, 1. hook, 1-1, base, 1-2, hanging ring, 1-4, handle, 1-5, pin hole, 2, pulley, 2-1, bracket, 3, connecting plate, 4, locking Pin, 4-1, convex head, 5, pulley I, 6, pulley II.

Detailed ways

Below in conjunction with embodiment the present invention is described in further detail:

As shown in Figure 1, the heel tackle with automatic locking includes a hook 1 and a tackle 2, and the tackle 2 includes an inverted U-shaped bracket 2-1, in which the bracket 2-1 is hinged with a pulley II6, and the soft ladder is hung on the pulley II6. The hook 1 includes a base 1-1, the upper end of the base 1-1 is connected with a hanging ring 1-2, the hanging ring 1-2 is an inverted U-shaped structure, and one side of the U-shaped opening of the hanging ring 1-2 is connected to the base 1 -1 connection, there is an opening between the other side of the hanging ring 1-2 and the base 1-1, and the side end of the side with the opening between the hanging ring 1-2 and the base 1-1 is bent upwards The curved structure makes the cable enter the opening between the hanging ring 1-2 and the base 1-1 more smoothly. The hanging ring 1-2 is provided with a handle 1-4, and the handle 1-4 is used for tying a rope. A latch hole 1-5 is also set at the upper position of the handle 1-4 on the hanging ring 1-2. A connecting plate 3 is hinged to the upper end of the hanging ring 1-2, and a rope is tied on the connecting plate 3. An arc-shaped locking pin 4 is hinged to the end of the connecting plate 3. The arc-shaped opening of the locking pin 4 is opposite to the hook 1, that is, the locking pin 4 The center of the arc is on the same side as the hook 1, and the other end of the locking pin 4 is inserted into the latch hole 1-5. A protruding head 4-1 is also arranged on the outer surface of the locking pin 4, and the protruding head 4-1 prevents the locking pin 4 from slipping out from the latch hole 1-5. A pulley Ⅰ5 is hinged inside the hanging ring 1-2, and the pulley Ⅰ5 is set perpendicular to the two sides of the hanging ring 1-2. The pulley Ⅰ5 is used to support the cable to facilitate the movement of the heel block on the cable, and also reduces the The inevitable sliding of the somersault block on the cable will wear the skin of the cable to prevent leakage accidents and improve safety performance.

The working process of the present invention is as follows:

First, a rope is tied on the handle 1-4 of the hanging ring 1-2 and the connecting plate 3, and the rope tied on the handle 1-4 is shot out with a rope shooting gun, so that the rope is wound on the cable, and the operator pulls the rope Make the somersault block rise. At this time, due to the position of the tether, the center of gravity of the somersault block is shifted, so the somersault block is inclined to rise. When the somersault block is close to the cable, the side of the arc structure of the hanging ring 1-2 first contacts the cable, and continues to pull The rope and the somersault block are guided by the side of the arc structure, and the cable enters the hanging ring 1-2 of the somersault block through the opening between the hanging ring 1-2 and the base 1-1 of the somersault block, that is, the somersault block passes through the "somersault". ” way to hang on the cable. The locking pin 4 moves downward under the action of gravity, that is, the locking pin 4 moves downward along the pin hole 1-5 until the end of the locking pin 1-5 falls on the opening between the hanging ring 1-2 and the base 1-1 On the base 1-1 below, that is, the opening between the hanging ring 1-2 and the base 1-1 is sealed to realize the automatic locking function; when it is necessary to remove the rollover from the cable, only need Pull the rope tied on the connection plate 3 in advance, so that the locking pin 4 moves upward together with the connection plate 3, and the opening between the hanging ring 1-2 and the base 1-1 is opened, and if you continue to pull, you will turn over and leave the cable . In this way, the automatic unlocking of the somersault rollover is realized, which avoids artificial climbing to operate the locking pin, and the operation is convenient and quick.

Claims (4)

1. The automatic locking somersault block, including the hook (1) and the block (2), the hook (1) is composed of the base (1-1) and the inverted U-shaped hanging ring (1-2) on the base (1-1) , one side of the U-shaped opening of the hanging ring (1-2) is connected to the base (1-1), and there is an opening between the other side of the hanging ring (1-2) and the base (1-1). It is: the upper end of the hanging ring (1-2) is hinged to a connecting plate (3), and the other end of the connecting plate (3) is hinged with an arc-shaped locking pin (4), and both the locking pin (4) and the connecting plate (3) are tied There are ropes, the side of the opening between the hanging ring (1-2) and the base (1-1) is provided with a latch hole (1-5) for the locking pin (4) to pass through, and the locking pin (4) The lower end is provided with a protrusion (4-1) to prevent the locking pin (4) from slipping out of the pin hole (1-5). 2. The self-locking somersault block according to claim 1, characterized in that: the side end of the side with an opening between the hanging ring (1-2) and the base (1-1) is upward Curved arc structure. 3. The self-locking tumbler block according to claim 1, characterized in that: the hanging ring (1-2) is provided with a handle (1-4) for ropes to tie. 4. The self-locking tumbler block according to claim 1, characterized in that a pulley I (5) is hinged between the two sides of the hanging ring (1-2).