CN219553937U - Electrostatic wire clamp convenient to installation and adjustment - Google Patents

Abstract

The utility model aims to provide an electrostatic wire clamp which can realize quick installation, connection and installation with an electrostatic wire and is convenient for adjusting the connection state, and is convenient for installation and adjustment.

Description

Electrostatic wire clamp convenient to installation and adjustment

Technical Field

The utility model relates to the technical field of aircraft fuel filling safety protection devices, in particular to an electrostatic lead clamp convenient to install and adjust.

Background

The electrostatic discharge is a phenomenon in which when the field intensity around a charged body exceeds the dielectric breakdown field intensity of the surrounding medium, the medium ionizes, and the charge on the charged body is partially or entirely lost. The civil aircraft adopts pressure fueling for fueling because of large fuel consumption, complex fuel tank design structure and short time and large tonnage fuel. When the fuel moves relative to the solid surface, static electricity can be generated, electricity can be stored, when the potential difference reaches 20KV, discharge phenomenon can be generated, spark energy is 0.2 megajoule larger than the minimum ignition energy of the fuel, or the concentration of fuel steam in the air is in an explosion limit range, so that explosion is easy to occur. This phenomenon is most likely to occur within 1-2 minutes of the start of aircraft pressure fueling, so timely elimination of static electricity generated during aircraft fueling is critical to various systems and safety of the aircraft.

Civil airports typically use oil storage vehicles to provide fuel filling for aircraft. Aviation fuel has a high charge-receiving capacity (high charge tendency) and a low charge-discharging capacity (low conductivity), so that the conductivity of the fuel is generally improved by adding an antistatic agent, and the electrostatic charge generated in the fuel is rapidly conducted. In order to realize a stable and reliable safety protection effect, when the aircraft is refueled, a worker can respectively connect the refueled vehicle with the aircraft grounding post and the ground through the metal lead, so that the refueled vehicle, the aircraft and the ground form an equipotential body, electrostatic charges generated in the fuel of the aircraft and the refueled vehicle are released, and the disaster caused by the discharge phenomenon due to the electrostatic potential difference is avoided.

In the actual oiling process, a worker usually clamps one end of the electrostatic wire clamp on a carrier needing electrostatic balance, and meanwhile, charges are released and potential balance are achieved in a mode that the tail end of the electrostatic wire connected to the rear side of the electrostatic wire clamp is communicated with a vehicle floor-mopping adhesive tape, and after oiling is completed, the electrostatic wire clamp is only required to be clamped, and separation of the electrostatic wire and vehicle equipment can be achieved. The resistance between the electrostatic clamp and the mopping end of the electrostatic wire is not more than 10 omega, otherwise, the release of charges is hindered. However, since the electrostatic wire is generally sleeved on the stud at the tail end of the electrostatic wire clamp through the clamping piece at the tail end of the electrostatic wire clamp, and then is connected and fixed in a locking manner through the nut, after the electrostatic wire clamp is used for a period of time, the nut is loosened under the influence of pulling, bending or vibration, at the moment, the sufficient joint between the electrostatic wire and the electrostatic wire clamp can not be ensured, and then the resistance between the electrostatic wire clamp and the electrostatic wire clamp is also greatly increased to prevent the release of charges. In addition, because of repeated disassembly and assembly and debugging, the electrostatic lead is easy to damage and even break due to repeated pulling and bending stress at the connection position of the main body section and the clamping piece. At this time, the new electrostatic lead needs to be replaced by an auxiliary tool, and the nut is integrally replaced after being rotated and taken down, so that the operation process is complicated, and the consumption of the electrostatic lead is increased.

In order to solve the problems, the utility model provides the electrostatic wire clamp which can realize quick installation, connection and installation with the electrostatic wires and is convenient for adjusting the connection state.

Disclosure of Invention

The utility model provides the electrostatic wire clamp which can realize quick installation, connection and installation with the electrostatic wires and is convenient for adjusting the connection state.

The technical aim of the utility model is realized by the following technical scheme:

the utility model provides an electrostatic wire presss from both sides convenient to installation is adjusted, includes the main clamp body that is used for with the local centre gripping fixed connection of oil pipe the block structure that is used for being connected with the electrostatic wire is installed to the afterbody of main clamp body, the block structure includes the central axis pivoted that can fix presses the dress splint, press the dress board to include and be columniform gyration connecting portion, be formed with bellied clamping part and outside extension's drive division on the outer peripheral face of gyration connecting portion.

As a preferable aspect of the present utility model, the clamping portion includes a plurality of teeth with tapered tips, and the plurality of teeth are sequentially arranged on the surface of the rotary connection portion along the direction of the central axis of the rotation of the pressing clamping plate.

As a preferable aspect of the present utility model, a guide groove for guiding the extending direction of the electrostatic wire is further formed in the main clamping body, the guide groove includes a feeding guide section and a locking guide section which are connected to each other, and a circular arc guide surface is formed between the feeding guide section and the locking guide section.

In a preferred aspect of the present utility model, a through hole is formed in a side surface of the main clip body so as to face the engagement guide section.

Preferably, a locking mechanism is provided between the main clamp body and the press-fit clamp plate, for preventing reverse rotation of the driving portion to maintain a connected state of the main clamp body and the electrostatic wire.

Preferably, the lock mechanism includes a rotatable stopper rotatable about a fixed central axis.

Preferably, in the present utility model, the lock mechanism includes a push stopper capable of reciprocating translation with respect to the main clamp body.

As the preference for the utility model, the tail end of the main clamp body is provided with the bending-resistant wire protecting device, and the bending-resistant wire protecting device comprises a connecting base fixedly connected with the tail end of the main clamp body and a protecting sleeve arranged on the connecting base in a screwed mode.

Preferably, the end of the protective sleeve is formed with a spiral extension.

In summary, the utility model can realize the following beneficial effects:

1. the electrostatic wire clamp convenient to install and adjust can be connected with the electrostatic wire in a clamping mode, and the clamping or loosening state conversion between the electrostatic wire clamp and the electrostatic wire can be realized quickly and conveniently only by rotating the pressing clamping plate, so that the electrostatic wire clamp is convenient and quick.

2. The electrostatic wire clamp convenient to install and adjust is provided with the clamping teeth with the conical tip, and the clamping teeth can directly penetrate through the insulating rubber layer coated on the surface of the electrostatic wire and directly contact with the metal wire core inside the internal wire in the clamping process of the electrostatic wire clamp. The clamping working mode of the electrostatic wire clamp does not need to set a special connecting terminal or conduct wire stripping treatment at the end part of the electrostatic wire, so that under the condition that the electrostatic wire is locally broken, only a longer section of wire needs to be directly pushed to the inside of the main clamp body, and then the pressing clamping plate is driven to finish connection at one time, thereby greatly saving the consumption of wire components.

3. The electrostatic wire clamp convenient to install and adjust provided by the utility model adopts the clamping part provided with the plurality of clamping tooth structures with the conical tip, so that after the clamping teeth penetrate through the insulating rubber layer on the outer side of the electrostatic wire, the wire can be prevented from being pulled and displaced along the axial direction of the wire and can be prevented from rotating around the axial direction of the wire, the stability of the wire relative to the electrostatic wire clamp is greatly improved, and the situation of poor contact and even broken contact is avoided, so that the electric charge can be smoothly led out.

Drawings

FIG. 1 is a schematic diagram of the overall structure of a static wire clip connected to a static wire;

FIG. 2 is an enlarged schematic view of a portion of the electrostatic wire clip and electrostatic wire connection structure;

FIG. 3 is a schematic diagram of the connection between the electrostatic wire clip and the electrostatic wire in a top view;

FIG. 4 is an enlarged view showing the connection relationship between the electrostatic wire clamp and the electrostatic wire in a clamped and connected state;

FIG. 5 is an enlarged schematic view of the connection relationship between the electrostatic wire clamp and the electrostatic wire in a loosened and removed state;

fig. 6 is a schematic structural view of the bending-resistant wire-protecting device.

In the figure:

a-electrostatic wire clamp, B-electrostatic wire;

1-a main clamp body, 101-a guide groove, 1011-a clamping guide section, 1012-a feeding guide section, 1013-a circular arc guide surface, 102-a through hole;

2-press fitting clamping plate, 201-rotary connecting part, 202-clamping part, 203-driving part, 2021-latch;

3-locking mechanism;

4-bending-resistant wire-protecting device, 401-connecting base, 402-protecting sleeve, 4021-spiral extension section.

Detailed Description

The following specific examples are intended to be illustrative of the utility model and are not intended to be limiting, as modifications of the utility model will be apparent to those skilled in the art upon reading the specification without inventive contribution thereto, and are intended to be protected by the patent law within the scope of the appended claims.

The scheme is realized by the following technical means:

examples: referring to fig. 1 of the specification, the electrostatic wire clamp a is used as a connecting component between an oil pipeline or a metal oil tank and a grounded electrostatic wire B so as to guide charges generated in the oil transportation process to the ground, thereby preventing safety accidents caused by electric sparks.

In this embodiment, the electrostatic conductive wire clamp a includes a main clamp body 1 for being fixedly clamped with a part of an oil pipe or an oil tank, and the tail of the main clamp body 1 is a hollow structure with two sides forming a plate-shaped part extending upwards and an opening at the upper part. The tail of the main clamp body 1 is provided with a clamping structure connected with the electrostatic lead B, and the clamping structure comprises a pressing clamping plate 2 capable of fixing and rotating along a central axis.

Specifically, the clamping structure comprises a pressing clamping plate 2, the pressing clamping plate 2 comprises a cylindrical rotary connecting portion 201, connecting columns are symmetrically protruded at two ends of the cylindrical rotary connecting portion 201 along the central axis of the rotary connecting portion, and the connecting columns at two ends penetrate through plate-shaped portions formed by upward extension of two sides of the tail of the main clamping body 1 respectively. At this time, the press-fit splint 2 can be rotated about this fixed rotation center axis. On the outer peripheral surface of the rotary connection portion 201, a protruding clamping portion 202 and an outwardly extending driving portion 203 are formed, when the electrostatic conductive wire B moves between the rotary connection portion 201 and the bottom surface of the tail portion of the main clamping body 1, an operator only needs to stir the driving portion 203 to understand that the press-fit clamping plate 2 is integrally turned over, and at this time, the space between the rotary connection portion 201 and the bottom surface of the tail portion of the main clamping body 1 is gradually reduced until the intermediate electrostatic conductive wire B is completely clamped and fixed. It should be noted that the main clamping body 1 and the pressing clamping plate 2 are made of pure copper materials, so as to obtain better electric conductivity.

The periphery of the electrostatic lead B is generally coated with an insulating coating layer made of rubber materials, and after repeated clamping and dismounting use, the situation that the lead is broken due to repeated bending and repeated times can occur. Since the main point of action of the abrasion and pulling torsion is generally located at the position near the electrostatic wire B led out from the electrostatic wire clamp a, breakage is most likely to occur at this position. Since the broken small section has little effect on the overall length of the electrostatic wire B, the large section of the electrostatic wire B can still be used for the use of the ground. In general, when the rest section of the electrostatic lead B is used, a wire stripping operation must be performed by using a special tool, which obviously brings inconvenience to the work of maintenance staff.

In order to solve this problem, in the present embodiment, the structure of the press-fit clamping plate 2 is further improved and optimized, a plurality of teeth 2021 are formed on the raised clamping portion 202, the teeth 2021 are arranged in a linear order on the surface of the swivel connection portion 201 along the direction of the central axis of the swivel of the press-fit clamping plate 2, and the outside of each tooth 2021 is formed with a tip portion having a tapered shape. At the same time, a guiding groove 101 for guiding the extending direction of the electrostatic wire B is formed on the bottom surface of the tail portion of the main clamping body 1, and the guiding groove 101 can be divided into two parts, namely a feeding guiding section 1012 and a clamping guiding section 1011, which are connected with each other. On the bottom plane inside the main clamping body 1, the feeding guide section 1012 extends from the end of the main clamping body 1 to a side wall surface in an inclined manner, the extending direction of the clamping guide section 1011 is parallel to the rotation axis of the press-fit clamping plate 2, and a circular arc-shaped guide surface 1013 is also formed between the feeding guide section 1012 and the clamping guide section 1011. The side wall of the tail of the main clamp body 1 is also provided with a through hole 102 which is opposite to the end section of the clamping guide section 1011.

When the electrostatic wire B and the electrostatic wire clamp a are connected and installed, the press-fit clamping plate 2 needs to be reversely rotated, so that the press-fit clamping plate 2 is in a loosening state in which the clamping teeth 2021 are turned upwards. At this time, the electrostatic wire B is inserted inward from the rear end of the guide groove 101 and then pushed inward, and then moves along the direction of the guide groove 101, sequentially passes through the feeding guide section 1012 and the engagement guide section 1011, and finally, the foremost section of the electrostatic wire B passes out from the through hole 102. At this time, the pressing clamping plate 2 is rotated forward, so that the latch 2021 is turned downward, and the insulating coating layer on the outer side of the electrostatic wire B part at the lower clamping guide section 1011 is pierced, and then the insulating coating layer abuts against the metal wire core part of the electrostatic wire B, thereby realizing conduction. Once the electrostatic lead B breaks, after the pressing clamp is reversely rotated again to release the clamping state, a worker can discharge the shorter partial section outwards to discard the shorter partial section by directly pulling the front end of the electrostatic lead B penetrated out of the through hole 102 outwards, and the remaining longer partial section of the electrostatic lead B can be continuously pushed inwards and then positively rotated again to realize connection and fixation between the two parts by the pressing clamp plate 2, so that the electrostatic lead B which is originally required to be discarded can be reused very conveniently.

The vibration generated during the process of filling the oil after the oil pipe or the oil tank is partially grounded may still cause the pressing clamping plate 2 to reversely rotate, so that the contact between the electrostatic wire clamp a and the electrostatic wire B is loosened or even separated. In order to solve this problem, a lock mechanism 3 for preventing the reverse rotation of the driving portion 203 to maintain the connected state of the main clamp 1 and the electrostatic wire B may be further provided between the press-fit clamp 2 and the main clamp 1.

Specifically, the locking mechanism 3 may include a rotational stopper capable of rotating with respect to a fixed central axis, and the control of the blocking abutment against the upper side of the driving portion 203 may be achieved by the rotation of itself. Of course, the locking mechanism 3 may also be in a form including a push-type stopper capable of reciprocating translation relative to the main clamp body 1, and when the push-type stopper is pushed to translate to one side, the push-type stopper is blocked by the driving portion 203 above to complete locking, and when the push-type stopper is pushed to translate to the other side, a portion of the push-type stopper that plays a blocking role is retracted to release the locking.

Further preferably, the anti-bending wire protection device 4 is further installed at the end of the main clamp body 1 of the electrostatic wire clamp a, the device comprises a connection base 401 fixedly connected with the end of the main clamp body 1 and a protection sleeve 402 installed on the connection base 401 in a screwed mode, the centers of the two parts are hollow and through, the protection sleeve 402 is made of plastic or rubber and other materials with certain deformation and rebound capabilities, and a spiral extension section 4021 is formed at the end of the protection sleeve. Before the electrostatic wire B is fixedly connected with the electrostatic wire clamp a, the electrostatic wire B needs to pass through the bending-resistant wire protection device 4. At this time, the protrusion of the electrostatic wire B, which completes the snap connection, and the partial section of the end of the electrostatic wire clip a are limited in the spiral extension section 4021, so that the bending of the electrostatic wire B at the location is limited by the spiral extension section 4021, thereby avoiding the metal fatigue of the electrostatic wire B caused by repeated excessive bending, reducing the risk of breakage of the electrostatic wire B, and playing an effective role in protection.

While the utility model has been described with reference to certain preferred embodiments, it will be understood by those skilled in the art that various changes and substitutions of equivalents may be made and equivalents will be apparent to those skilled in the art without departing from the scope of the utility model. Therefore, the protection scope of the utility model is subject to the protection scope of the claims.

Claims (3)

1. An electrostatic wire clamp convenient to installation is adjusted, its characterized in that: the oil conveying pipe clamp comprises a main clamp body (1) used for being fixedly connected with an oil conveying pipe in a local clamping mode, a clamping structure used for being connected with an electrostatic lead (B) is arranged at the tail of the main clamp body (1), the clamping structure comprises a pressing clamping plate (2) capable of fixing a central axis to rotate, the pressing clamping plate (2) comprises a cylindrical rotary connecting part (201), and a protruding clamping part (202) and a driving part (203) extending outwards are formed on the outer peripheral surface of the rotary connecting part (201); the clamping part (202) comprises a plurality of clamping teeth (2021) with conical tips, and the clamping teeth (2021) are sequentially distributed on the surface of the rotary connecting part (201) along the direction of the central axis of the rotation of the pressing clamping plate (2); a guide groove (101) for guiding the extending direction of the static wire (B) is formed on the main clamp body (1), the guide groove (101) comprises a feeding guide section (1012) and a clamping guide section (1011) which are communicated with each other, and a circular arc-shaped guide surface (1013) is formed between the feeding guide section (1012) and the clamping guide section (1011); a through hole (102) facing the engagement guide section (1011) is formed in the side surface of the main clamp body (1); a locking mechanism (3) is arranged between the main clamp body (1) and the press-fit clamping plate (2) and used for preventing the driving part (203) from reversely rotating so as to keep the connection state of the main clamp body (1) and the electrostatic lead (B); the anti-bending wire protection device (4) is arranged at the tail end of the main clamp body (1), and the anti-bending wire protection device (4) comprises a connecting base (401) fixedly connected with the tail end of the main clamp body (1) and a protective sleeve (402) arranged on the connecting base (401) in a screwed mode; the end of the protective sleeve (402) is formed with a spiral extension (4021).

2. The electrostatic wire clamp of claim 1 for facilitating installation adjustment, wherein: the locking mechanism (3) comprises a rotary stop which can rotate relative to a fixed central axis.

3. The electrostatic wire clamp of claim 1 for facilitating installation adjustment, wherein: the locking mechanism (3) comprises a pushing type stop block capable of reciprocating translation relative to the main clamp body (1).