CN211700623U - Lead screw fastening doubling device - Google Patents

Abstract

The utility model relates to the field of electric wire connection equipment, in particular to a screw-thread tightening and paralleling device, which comprises an upper clamping plate, a lower clamping plate and a bolt connection assembly. The arc-shaped grooves are arranged, and the two arc-shaped grooves on the same side are oppositely arranged and clamped on both sides of the side wall of the wire; the bolt connection assembly includes an aluminum alloy screw, an arc-shaped washer, and a disc spring washer and a torque nut, the lower end of the screw is connected to a threaded hole located between the two arc-shaped grooves of the lower clamping plate, the upper clamping plate is provided with a strip hole perpendicular to the arc-shaped groove, and the upper clamping plate is provided with a strip hole perpendicular to the arc-shaped groove. The upper surface is arc-shaped, the lower surface of the arc-shaped gasket is matched with the upper surface of the upper splint, and the upper surface of the arc-shaped gasket is perpendicular to the screw rod; using the screw rod of the technical solution to fasten the paralleler can realize Multi-specification wire diameter clamping, and the locking force after connection is more stable and reliable.

Description

Screw tightening and paralleling device

technical field

The utility model relates to the field of electric wire connection equipment, in particular to a screw thread tightening and paralleling device.

Background technique

The connection, splicing, jumper, etc. of wires in the power system all need to be realized by parallel groove clips, C-type clips, etc., so it plays a very important role.

At present, the common parallel groove clamps and C-type clamps have the following problems:

1. There are many specifications of the wire clips, the applicable wire range is small, the versatility is not strong, and the selection is troublesome;

2. The wire clamps are locked by common standard nuts and washers. After normal locking, the nut locking torque value cannot be constant. After running for a period of time, the wire will loosen. The loosening will increase the resistance of the connection interface, which is prone to electrical corrosion damage. In turn, the power line burns and disconnects accidents; and even if the torque nut is used for locking, the above phenomenon will also occur.

Utility model content

The purpose of the utility model is to provide a screw thread tightening and paralleling device, so as to realize the clamping of multi-specification wire diameters, and at the same time, the locking force after connection is more stable and reliable.

In order to achieve the above purpose, the present invention provides a screw-fastening paralleler, comprising an upper clamping plate, a lower clamping plate and a bolt connection assembly, wherein the upper clamping plate and the lower clamping plate are mutually buckled to clamp the wire; the upper clamping plate and the lower clamping plate are The two sides of the splint are respectively provided with arc-shaped grooves arranged along its length direction, and the two arc-shaped grooves on the same side are oppositely arranged and clamped on both sides of the side wall of the wire; the bolt connection assembly includes: aluminum alloy A screw rod, an arc-shaped washer, a disc spring washer and a torque nut, the lower end of the screw rod is connected with a threaded hole located between the two arc-shaped grooves of the lower clamping plate, and the upper clamping plate is provided with perpendicular to the arc-shaped grooves In the strip hole of the slot, the upper surface of the upper clamping plate is arc-shaped, the lower surface of the arc-shaped gasket is matched with the upper surface of the upper clamping plate, and the upper surface of the arc-shaped gasket is perpendicular to the screw rod.

The screw tightening and paralleling device of the utility model has the following characteristics: due to the use of an aluminum alloy screw, the materials of the existing upper clamping plate, lower clamping plate, screw rod, arc-shaped washer and torque nut are unified. The combined design of the shape washer and the disc spring washer can make the positive pressure evenly distributed, and these parts can achieve synchronous expansion or contraction after tightening, avoiding the traditional standard steel bolts and aluminum alloy torque nuts, upper splints . Due to the difference in the expansion coefficient, the lower splint will move relative to the expansion and contraction caused by the temperature change, so that the tightening torque is stable, the loosening of the connection is effectively avoided, and the locking force is more stable and reliable; since the bolt is directly connected to the lower splint The threaded connection is fixed, so that when the worker performs parallel operation at high altitude, it is no longer necessary to clamp the bolt head separately, and the operation is simpler; and the side design of the arc groove can be adjusted by adjusting the gap between the upper and lower arc grooves. The achievable holding area is large, the application range is wide, and the round wire is also stable in the arc groove.

As a preferred solution, in order to further improve the connection force of the paralleler and ensure high reliability after connection, there are at least two groups of the bolt connection components, and the lower clamp plate, the upper clamp plate and the arc-shaped gasket are provided with corresponding groups. hole.

As a preferred solution, in order to reduce the influence of the thread clearance on the lower clamping plate on the locking force, the threaded hole is a blind hole or a through hole, and the lower part of the through hole is provided with a protrusion that blocks the advancement of the screw, so that when the screw and the lower clamping plate are tightened During operation, the bulge at the bottom of the blind hole or the through hole will lift the screw in the reverse direction, so that the screw sticks to the thread on the lower clamping plate in the direction away from the lower clamping plate, so that when the torque nut pulls the screw upward and locks, The screw and the thread on the lower splint are closely fitted, and there is no loose clearance, thus effectively ensuring the reliability of the connection.

As a preferred solution, in order to facilitate tightening the screw rod and the lower clamping plate, the screw rod is provided with a lower thread portion and an upper thread portion, and at least one tool engaging portion for rotating the screw rod is provided.

Preferably, the tool engaging part is a round head, a hexagonal head, a square head, a countersunk head, a hole or a groove provided on the upper end of the screw rod; Prism, so common wrenches and screwdrivers can fasten the screw.

As a preferred solution, in order to enable the arc-shaped groove to clamp smaller wires, the outer sides of the arc-shaped grooves on at least the same side of the upper and lower splints are provided with upper and lower staggered claws or gaps. The grooves can effectively reduce the gap by fitting each other, and realize the stable clamping of copper and aluminum wires with a cross-section as small as 25mm ² .

As a preferred solution, in order to better clamp the wire, increase the friction force and reduce the contact resistance, the inner wall of the arc-shaped groove is provided with a bar-shaped tooth with an acute angle, and the bar-shaped tooth with an acute angle can be In the process of locking the wire, the oxide layer on the surface of the wire is pierced to reduce the contact resistance.

Description of drawings

Fig. 1 is the structural schematic diagram of the utility model embodiment 1 screw-fastening and paralleling device in use state;

Fig. 2 is the structural representation of the screw rod fastening the lower splint of the parallel device in Embodiment 1 of the present utility model;

Fig. 3 is the structural representation of the upper splint of the thread screw fastening device in Embodiment 1 of the present utility model;

Fig. 4 is the structural representation of the screw rod fastening the arc-shaped gasket of the parallel device according to Embodiment 1 of the present utility model;

FIG. 5 is a schematic structural diagram of the screw-fastening paralleler according to Embodiment 1 of the present utility model;

FIG. 6 is a schematic structural diagram of the screw-fastening paralleler according to Embodiment 4 of the present utility model;

FIG. 7 is a schematic structural diagram of the screw thread tightening and paralleling device according to Embodiment 5 of the present invention.

Including, the lower splint 1, the upper splint 2, the arc washer 3, the torque nut 4, the disc spring washer 5, the screw 6, the wire 7, the threaded hole 8, the lower splint arc groove 9, the strip hole 10, The arc groove 11 of the upper splint, the upper surface 12 of the upper splint, the screw hole 13 opened on the arc gasket, and the lower surface 14 of the arc gasket.

Detailed ways

In order to facilitate the understanding of those skilled in the art, the present utility model will be described in further detail below in conjunction with the accompanying drawings and specific embodiments, and the content mentioned in the embodiments is not a limitation to the present utility model:

Example 1

It should be noted in advance that, in the present utility model, unless otherwise expressly specified and limited, terms such as "installation", "connection", "connection", "fixing" should be understood in a broad sense, for example, it may be a fixed connection , or detachable connection, or integral connection; direct connection, indirect connection through an intermediate medium, or internal communication between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

As shown in Fig. 1-Fig. 5: this embodiment provides a screw tightening and paralleling device, including an upper splint 2, a lower splint 1, an arc washer 3, a torque nut 4, a disc spring washer 5, The screw 6 made of aluminum alloy constitutes the bolt connection assembly. The lower plywood 1, the upper plywood 2, and the arc-shaped gasket 3 are made of high-strength, high-conductivity aluminum alloys. The upper splint 2 and the lower splint 1 are respectively provided with an upper splint arc-shaped groove 11 and a lower splint arc-shaped groove 9 opened along their length direction, and the two arc-shaped grooves on the same side are oppositely arranged to be clamped in the On both sides of the side wall of the wire 7, the inner wall of the arc-shaped groove is provided with teeth with the oxide layer used to puncture the wire 7, preferably a bar-shaped tooth with an acute cross-section along the direction of the arc-shaped groove is used, so that in the extrusion process The upper clamp plate 2 and the lower clamp plate 1 are more easily formed as blanks; the lower end of the screw 6 is connected to the threaded hole 8 located between the two arc-shaped grooves of the lower clamp plate 1, and the threaded hole 8 can be a blind hole, so that when the screw is screwed 6, the blind hole will reversely lift the screw 6, so that the screw 6 is close to the thread on the lower plywood 1 in the direction away from the lower plywood 1. When the torque nut 4 pulls the screw 6 upward to lock it, the screw The thread of 6 is in close contact with the thread on the lower clamping plate 1 in the direction toward the moment nut 4, and there is no longer any loose clearance. The upper splint 2 is provided with a strip hole 10 perpendicular to the arc groove 11 of the upper splint, the upper surface of the upper splint 2 is arc-shaped, and the lower surface 14 of the arc-shaped gasket 3 is close to the strip hole 10 of the upper splint 2. The curvature of the upper surface 12 is basically matched, thereby greatly increasing the contact area and ensuring the stability of the contact. The arc-shaped gasket 3 is provided with a screw hole 13, the shape of which is preferably a round hole, an oval hole or a strip hole that is convenient for processing, and the diameter is preferably smaller than The outer diameter of the disc spring washer 5 and the upper surface of the arc-shaped washer are perpendicular to the screw 6 .

The screw 6 is provided with a lower thread portion and an upper thread portion, and preferably at least one tool engaging portion is provided on the screw 6 to facilitate its rotation. The tool engaging part can be a groove, a hole, two parallel surfaces, a four-column column or a hexagonal column processed in the middle of the screw 6, or a round head, a hexagonal head, a square head, a countersunk head, a hole arranged on the upper end of the screw 6 or slot. In this embodiment, a hexagonal head disposed on the upper end of the screw 6 is selected, and the maximum diagonal length of the hexagonal head should be smaller than the inner diameter of the torque nut 4 .

Example 2

The main difference from Example 1 is that the tool engaging part of the screw 6 adopts a hexagonal column arranged in the middle, and the threaded hole on the lower clamping plate adopts a through hole. The advancing protrusion can be realized by a hole with an inner diameter smaller than the upper diameter of the protrusion, or without a thread.

Example 3

The main difference from Embodiment 1 is that upper and lower staggered claws or gaps are provided on the outer edges of the upper splint arc groove 11 and the lower splint arc groove 9. In this embodiment, the larger arc length is selected. The way of processing the notches on the arc-shaped grooves 11 of the upper clamp plate and the arc-shaped grooves 9 of the lower clamp plate is relatively simple.

Example 4

As shown in Figure 6, the main difference from Embodiment 1 is that in order to ensure the balance and reliability of the connection, two groups of bolts are connected to each other, and corresponding groups of holes are provided on the lower clamp plate, the upper clamp plate and the arc-shaped gasket.

Example 5

As shown in Figure 7, the main difference from Example 1 is that in order to ensure the balance and reliability of the connection, three groups of bolts are connected, and corresponding groups of holes are provided on the lower clamp plate, the upper clamp plate and the arc gasket.

In addition, in order to improve the anti-corrosion performance and electrical conductivity, a protective layer is provided on the surface of each accessory of the screw tightening and paralleling device of the new type.

In the present invention, unless otherwise expressly specified and limited, the first feature "on" or "under" the second feature may include the first and second features in direct contact, or may include that the first and second features are not in contact with each other. Direct contact but through additional features between them. Also, the first feature being "above", "over" and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is level higher than the second feature. The first feature is "below", "below" and "below" the second feature includes the first feature being directly below and diagonally below the second feature, or simply means that the first feature has a lower level than the second feature. Terms "top", "bottom", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outer", etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation, with a specific orientation. The orientation configuration and operation are therefore not to be construed as limitations of the present invention.

It should be pointed out that the above-mentioned embodiment is the best implementation scheme of the present invention. In addition, the present invention can also be realized in other ways. Without departing from the concept of the technical solution, any obvious replacement, modification and deformation All fall within the protection scope of the present invention.

In addition, in order to enable those skilled in the art to more easily understand the improvements of the present invention over the prior art, some drawings and common sense descriptions of the present invention have been simplified, and for the sake of clarity, this application document Some other elements are also omitted, and those of ordinary skill in the art would realize that these omitted elements may also constitute the content of the present invention.

Claims (10)

1. A lead screw tightening and paralleling device, comprising an upper splint, a lower splint and a bolt connection assembly, wherein the upper and lower splints are fastened to each other to clamp the wire; it is characterized in that: the two parts of the upper splint and the lower splint are The sides are respectively provided with arc-shaped grooves arranged along its length direction, and the two arc-shaped grooves on the same side are oppositely arranged and clamped on both sides of the side wall of the wire; the bolt connection assembly includes an aluminum alloy screw, an arc groove The lower end of the screw rod is connected with the threaded hole between the two arc-shaped grooves of the lower clamping plate, and the upper clamping plate is provided with a strip perpendicular to the arc-shaped grooves. The upper surface of the upper clamping plate is arc-shaped, the lower surface of the arc-shaped gasket is matched with the upper surface of the upper clamping plate, and the upper surface of the arc-shaped gasket is perpendicular to the screw rod. 2 . The screw tightening and paralleling device according to claim 1 , wherein there are at least two groups of the bolt connection components, and the lower clamp plate, the upper clamp plate and the arc-shaped gasket are provided with a corresponding number of groups. 3 . hole. 3 . The screw tightening and paralleling device according to claim 2 , wherein the threaded hole is a blind hole or a through hole. 4 . 4 . The screw tightening and paralleling device according to claim 3 , wherein the lower part of the through hole is provided with a protrusion that blocks the advancement of the screw. 5 . 5. The screw tightening and paralleling device according to any one of claims 1-4, wherein the screw rod is provided with a lower thread part and an upper thread part. 6 . The screw tightening and paralleling device according to claim 5 , wherein the screw rod is provided with at least one tool engaging portion for rotating it. 7 . 7 . The screw tightening and paralleling device according to claim 6 , wherein the tool engaging portion is a round head, a hexagonal head, a square head, a countersunk head, a hole or a groove provided on the upper end of the screw rod. 8 . 8 . The screw tightening and paralleling device according to claim 6 , wherein the tool engaging portion is a groove, a hole, two parallel surfaces, a four-column column or a hexagonal column processed in the middle of the screw. 9 . 9. The screw tightening and paralleling device according to any one of claims 1-4, characterized in that: the outer sides of the arc-shaped grooves on at least the same side of the upper and lower splints are provided with protrusions that are staggered up and down. Claws or notches. 10 . The screw tightening and paralleling device according to claim 1 , wherein the inner wall of the arc-shaped groove is provided with bar-shaped teeth with acute angles. 11 .

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