CN210604204U

CN210604204U - Bending test device

Info

Publication number: CN210604204U
Application number: CN201921262512.XU
Authority: CN
Inventors: 曹永义; 陈爱兵; 蒋健
Original assignee: Wuxi Xizhou Magnet Wires Co Ltd
Current assignee: Wuxi Xizhou Magnet Wires Co Ltd
Priority date: 2019-08-06
Filing date: 2019-08-06
Publication date: 2020-05-22
Anticipated expiration: 2029-08-06

Abstract

The utility model provides a bending test device, it can be used for the bending test of the wire of multiple size. The device comprises a base body, wherein the base body is connected with a fixed shaft, a round bar is arranged on the fixed shaft, a handle is further rotatably arranged on the fixed shaft, the handle is connected with a bearing, one end of the round bar is connected with a limiting plate, the other end of the round bar is sleeved with a round bar clamping plate, one end of a first lead screw is connected with the limiting plate, and the other end of the first lead screw penetrates through the round bar clamping plate and is in threaded connection with the round bar; the round bar clamping plate is annular, and the inner surface of the round bar clamping plate is provided with a T-shaped block matched with the T-shaped groove on the outer surface of the round bar; the pole includes casing and core, and the core has outwards cup jointed more than or equal to 1 casing, has cup jointed the pole splint on the outermost casing, and the T-slot has all been seted up to core and casing surface, and the casing internal surface be equipped with T-slot complex T-shaped piece, second lead screw one end and limiting plate connection, the other end of second lead screw pass the casing and with casing threaded connection.

Description

Bending test device

Technical Field

The utility model relates to a wire production detects technical field, specifically is a bending test device.

Background

After the production of a conducting wire such as an enameled wire or a paper-insulated stranded conducting wire and the like is finished, the flexibility and the adhesiveness of the conducting wire are required to be tested, the flexibility and the adhesiveness of the conducting wire reflect the capability that when a winding wire is subjected to external acting force such as stretching, winding, bending or twisting, the insulation of the conducting wire does not crack or lose the adhesiveness, the national standard GB/T4074.3-2008 has detailed description on the detection of the flexibility and the adhesiveness, generally, a round bar winding test can be adopted for detection, the standard figure 4 describes a round bar bending test device, and the test is carried out by arranging two handles coaxial with a round bar, arranging ball bearings on the handles, placing a sample on the round bar, rotating the handles towards two sides respectively, and bending the sample by 180 degrees by means of the ball bearings on the handles; the diameter of the round rod is specified in corresponding relevant product standards, for example, the national standard GB/T7673.5-2008 of the paper-insulated stranded conductor, the paper-insulated stranded conductor should not crack or have no local protrusion after being bent 180 degrees on the round rod with the specified outer diameter multiplying factor: ZJ and ZJM are (10-11 times); ZJD: (6-7) times; that is, the sizes of the round rods are different from time to time for different wire sizes, so that the round rod bending test device is only suitable for wires of one type, and when the round rods of other sizes are required to be used for testing, other test devices are required, which results in higher cost.

SUMMERY OF THE UTILITY MODEL

To the problem that traditional pole bending test device can not be suitable for the wire of multiple size, the utility model provides a bending test device, it can be used for the bending test of the wire of multiple size.

The technical scheme is as follows: the utility model provides a bending test device, its includes the pedestal, the pedestal has the fixed axle through leg joint, be equipped with the pole on the fixed axle, still rotate on the fixed axle and install the handle, be connected with the bearing through the connecting rod on the handle, the pole orientation handle one end is connected with the limiting plate, the pole is kept away from pole one end has cup jointed pole splint, its characterized in that: one end of a first lead screw is connected with the limiting plate, and the other end of the first lead screw penetrates through the round bar clamping plate and is in threaded connection with the round bar clamping plate; the round bar clamping plate is annular, and a T-shaped block matched with the T-shaped groove on the outer surface of the round bar is arranged on the inner surface of the round bar clamping plate; the round bar comprises an annular shell and a cylindrical core body arranged on the fixed shaft, wherein the core body is outwards sleeved with more than or equal to 1 shell, the outer diameter of the shell and the outer diameter of the core body are arranged according to the size of a wire detected as required, the outer diameter of the core body is sleeved with the round bar clamping plate, a T-shaped groove is formed in the outer surface of the core body, a T-shaped block matched with the T-shaped groove is arranged on the inner surface of the shell body, one end of a second lead screw is connected with the limiting plate, and the other end of the second lead screw penetrates through the shell body and is in threaded connection with the shell body.

It is further characterized in that:

an adjusting groove is formed in the handle, one end of the connecting rod is connected with the bearing, the other end of the connecting rod is connected with a locking screw rod, the locking screw rod penetrates through the adjusting groove, and the connecting rod is locked through a nut;

the end parts of the first lead screw and the second lead screw penetrate through the limiting plate and then are connected with limiting nuts;

the first lead screw and the second lead screw are respectively positioned at the bottom of the round bar clamping plate and the bottom of the shell.

After having adopted such structure, each casing all can come the control to remove through each second lead screw respectively, need not carry out the external diameter that the dismouting just can change the pole to satisfy the experimental needs of the wire of unidimensional not, the casing that shifts out moreover can also play the effect of pole splint and carry out the centre gripping, convenient to use to the wire.

Drawings

FIG. 1 is a schematic front view of the present invention;

fig. 2 is a schematic side view of the present invention.

Detailed Description

As shown in fig. 1 and 2, the bending test device comprises a base body 1, the base body 1 is connected with a fixed shaft 3 through a support 2, the fixed shaft 3 is connected with a round bar 4, the fixed shaft 3 is also rotatably provided with a handle 5, the handle 5 is connected with a bearing 7 through a connecting rod 6, one end of the round bar 4, which faces the handle 5, is connected with a limiting plate 8, one end of the round bar 4, which is far away from the handle 5, is sleeved with a round bar clamping plate 9, one end of a first lead screw 10 is connected with the limiting plate 8, and the other end of the first lead screw 10 penetrates through the round bar clamping plate 9 and is; the round bar clamping plate 9 is annular, and the inner surface of the round bar clamping plate is provided with a T-shaped block matched with the T-shaped groove on the outer surface of the round bar 4; the round bar 4 comprises an annular shell 4-1 and a cylindrical core 4-2 fixedly mounted on the fixed shaft 3, the core 4-2 is sleeved with more than or equal to 1 shell 4-1 outwards, the outer diameters of the shell 4-1 and the core 4-2 are set according to the size of a wire 11 to be detected, the outermost shell 4-1 is sleeved with a round bar clamping plate 9, T-shaped grooves are formed in the outer surfaces of the core 4-2 and the shell 4-1, a T-shaped block matched with the T-shaped grooves is arranged on the inner surface of the shell 4-1, one end of a second lead screw 12 is connected with a limiting plate 8, and the other end of the second lead screw 12 penetrates through the shell 4-1 and is in threaded connection with the shell 4-1.

After the structure is adopted, each shell 4-1 can be controlled to move through each second lead screw 12 respectively, the outer diameter of the round rod 4 can be changed without dismounting, so that the test requirements of the wires 11 with different sizes are met, the moved shell 4-1 can also play a role of the round rod clamping plate 9 for clamping the wires 11, the use is convenient, in addition, a backing plate can be placed between the shell 4-1 or the round rod clamping plate 9 and the wires 11 during clamping, so that the clamping is more stable, meanwhile, the wires are prevented from being damaged, and in addition, although the cross section of the wire 11 drawn in the drawing is circular, the device is preferably suitable for flat wires.

In addition, an adjusting groove 5-1 is formed in the handle 5, one end of the connecting rod 6 is connected with the bearing 7, the other end of the connecting rod 6 is connected with a locking screw rod, the locking screw rod penetrates through the adjusting groove 5-1, and the connecting rod 6 is locked through a nut, so that the position of the bearing 7 can be adjusted as required; the end parts of the first lead screw 10 and the second lead screw 12 are connected with limiting nuts after penetrating through the limiting plate 8, the limiting nuts are used for limiting so that the first lead screw 10 and the second lead screw 12 can be rotatably connected with the limiting plate 8, and the first lead screw 10 and the second lead screw 12 are respectively located at the bottoms of the round bar clamping plate 9 and the shell 4-1, so that the bending of the lead wire 11 is prevented from being influenced.

When carrying out the maximum external diameter test, directly place the wire on the pole 4 and remove through first lead screw 10 control pole splint 9 and press from both sides tight wire, rethread rotation handle 5 makes the wire crooked 180 degrees as shown in fig. 1 through bearing 7, thereby carry out bending test, when needs reduce the external diameter, find required casing as the external diameter, shift out the outside casing of this casing through second lead screw 12, place the wire in on this casing again, can press from both sides it as pole splint through outside casing, again with the position according to the position control bearing 7 of wire, and then carry out bending test, a test device can be applicable to the bending test of the wire of multiple size, and do not need the loading and unloading when adjusting the pole size, high durability and convenient use.

The above description is only for the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. The utility model provides a bending test device, its includes the pedestal, the pedestal has the fixed axle through leg joint, be equipped with the pole on the fixed axle, still rotate on the fixed axle and install the handle, be connected with the bearing through the connecting rod on the handle, the pole orientation handle one end is connected with the limiting plate, the pole is kept away from pole one end has cup jointed pole splint, its characterized in that: one end of a first lead screw is connected with the limiting plate, and the other end of the first lead screw penetrates through the round bar clamping plate and is in threaded connection with the round bar clamping plate; the round bar clamping plate is annular, and a T-shaped block matched with the T-shaped groove on the outer surface of the round bar is arranged on the inner surface of the round bar clamping plate; the round bar comprises an annular shell and a cylindrical core body arranged on the fixed shaft, wherein the core body is outwards sleeved with more than or equal to 1 shell, the outer diameter of the shell and the outer diameter of the core body are arranged according to the size of a wire detected as required, the outer diameter of the core body is sleeved with the round bar clamping plate, a T-shaped groove is formed in the outer surface of the core body, a T-shaped block matched with the T-shaped groove is arranged on the inner surface of the shell body, one end of a second lead screw is connected with the limiting plate, and the other end of the second lead screw penetrates through the shell body and is in threaded connection with the shell body.

2. A bending test apparatus according to claim 1, wherein: the handle is provided with an adjusting groove, one end of the connecting rod is connected with the bearing, the other end of the connecting rod is connected with a locking screw rod, and the locking screw rod penetrates through the adjusting groove and is locked by a nut.

3. A bending test apparatus according to claim 1, wherein: and the end parts of the first lead screw and the second lead screw penetrate through the limiting plate and then are connected with limiting nuts.

4. A bending test apparatus according to claim 1, wherein: the first lead screw and the second lead screw are respectively positioned at the bottom of the round bar clamping plate and the bottom of the shell.