CN210051787U

CN210051787U - Fixing device for dynamic resistance measuring chuck

Info

Publication number: CN210051787U
Application number: CN201920292730.1U
Authority: CN
Inventors: 芦宇峰; 梁兆庭; 陆一凡; 苏毅
Original assignee: Electric Power Research Institute of Guangxi Power Grid Co Ltd
Current assignee: Electric Power Research Institute of Guangxi Power Grid Co Ltd
Priority date: 2019-03-08
Filing date: 2019-03-08
Publication date: 2020-02-11
Anticipated expiration: 2029-03-08

Abstract

The utility model discloses a dynamic resistance measurement chuck fixing device, which relates to the technical field of resistance measurement and comprises a bottom plate, wherein a vertical plate is arranged in the middle of the top of the bottom plate, a pointer is arranged on the vertical plate, two fixing devices are arranged at two ends of the top of the bottom plate, each fixing device comprises a fixing plate arranged at one end of the top of the bottom plate, a second screw rod is movably connected on the fixing plate and is connected with a second bearing, and the second bearing is connected with one end of a connecting plate; one end of the L-shaped plate is arranged at the top end of the connecting plate; the two connecting rods are respectively and rotatably connected with the front and the back of the other end of the connecting plate through rotating shafts, one ends of the two connecting rods, which are close to the vertical plate, are respectively provided with an arc-shaped clamping plate, and the two arc-shaped clamping plates are symmetrically arranged; the limiting device is arranged on the L-shaped plate, and the two connecting rods drive the two arc-shaped clamping plates to be tightened or loosened through the limiting device. The utility model discloses can be fixed to dynamic resistance measurement chuck, prevent to take place to remove, make clamping position fixed at every turn, prevent to produce the error, improve measurement accuracy.

Description

Fixing device for dynamic resistance measuring chuck

Technical Field

The utility model relates to a resistance measurement technical field especially relates to a developments resistance measurement chuck fixing device.

Background

In recent years, with the continuous improvement of precision of micro-resistance measuring equipment, research of a micro-resistance nondestructive testing technology begins to become a hot point of research of the same industry in the industry, but at present, the research of a domestic dynamic micro-resistance method is abroad but is quite rare, in order to research the damage online monitoring technology of the dynamic micro-resistance method, a set of dynamic micro-resistance measuring system is built, the fact that the position of each clamping of a resistance measuring chuck cannot be repeated well in the test process is found, and in the fatigue test process, the position of the resistance measuring chuck is changed in the test process due to high-frequency vibration, so that a large measuring error is caused, and therefore a dynamic resistance measuring chuck fixing device is provided.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the shortcoming that exists among the prior art, and the dynamic resistance who proposes measures chuck fixing device makes it can fix the dynamic resistance measurement chuck, prevents that it from taking place to remove, guarantees the stability of using, makes clamping position fixed at every turn, prevents to produce the error, improves measurement accuracy.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a chuck fixing device is measured to dynamic resistance, includes the bottom plate, the top middle part of bottom plate is equipped with the riser, the back of riser is equipped with the pointer, the both ends symmetry at the top of bottom plate is equipped with two fixing device, fixing device includes:

the fixing plate is arranged at one end of the top of the bottom plate, a second screw is movably connected to the fixing plate, and a second bearing is connected to one end of the second screw on the bottom plate;

one end of the connecting plate is connected with the second bearing, and the connecting plate can be driven to slide on the bottom plate through the second screw rod;

one end of the L-shaped plate is arranged at the top end of the connecting plate;

the two connecting rods are respectively and rotatably connected with the front side and the back side of the other end of the connecting plate through rotating shafts, one ends of the two connecting rods, which are close to the vertical plate, are respectively connected with an arc-shaped clamping plate, the two connecting rods are arranged in an X shape, and the arc-shaped clamping plates corresponding to the two connecting rods are symmetrically arranged; and

and the limiting devices are arranged on the L-shaped plates, and the two connecting rods drive the two arc-shaped clamping plates to be tightened or loosened through the limiting devices.

Preferably, the limiting device comprises:

the side wall of the vertical side plate of the L-shaped plate parallel to the bottom plate is provided with a through hole;

the first bearing is arranged at the bottom of the other end of the L-shaped plate (namely the free end of the L-shaped plate, which is parallel to the bottom plate, of the vertical side plate) and corresponds to the through hole, and the first screw penetrates through the through hole and is connected with the first bearing; and

the screw block is arranged on the first screw rod between the L-shaped plate and the first bearing, the back of the screw block is provided with a support rod, and pressure heads matched with the connecting rod are arranged on the side wall of the support rod and the front side of the lower end of the screw block; the two connecting rods are driven to rotate around the rotating shaft simultaneously through the thread block, the supporting rod and the two pressing heads.

Preferably, the inner wall of the vertical side plate parallel to the bottom plate of the L-shaped plate is provided with a limit groove; the limiting device further comprises a limiting block matched with the limiting groove, the limiting block is arranged at the top end of the thread block, the thread block drives the limiting block to slide in the limiting groove, and stability of the thread block during moving is improved.

Preferably, the inner wall of arc splint and the outer wall both sides of riser all are equipped with the cushion.

Preferably, the rubber pad is fixed by glue.

Preferably, the lower end of the connecting plate is symmetrically provided with two sliding blocks, and the top of the bottom plate is provided with a sliding groove matched with the sliding blocks.

The utility model provides a pair of developments resistance measurement chuck fixing device, beneficial effect lies in: when the utility model is used, two dynamic resistance measuring chucks are respectively placed between two arc-shaped clamping plates, the first screw rod on one side of rotation drives the two pressing heads to move, so that the two pressing heads extrude the two connecting rods and the two connecting rods rotate around corresponding rotating shafts, the connecting rods rotate to drive the two arc-shaped clamping plates to mutually approach, the dynamic resistance measuring chucks in the two arc-shaped clamping plates are clamped and fixed to prevent the dynamic resistance measuring chucks from moving, the stability is improved, the second screw rod is rotated on the fixing plate, the second screw rod moves and drives the connecting plate to move, the dynamic resistance measuring chucks between the two arc-shaped clamping plates are contacted and tightly pressed with the vertical plate to prevent moving, the stability of use is further improved, the pointer 21 is aligned with the center position of a sample, the fixing of each clamping position is ensured, the use effect is improved, compared with the prior art, can fix the dynamic resistance measurement chuck, prevent that the dynamic resistance measurement chuck from removing, guarantee the stability of using, make clamping position fixed at every turn, prevent to produce the error, improve measurement accuracy, the practicality is strong.

Drawings

Fig. 1 is a top view of a dynamic resistance measuring chuck fixing device provided in the present invention;

fig. 2 is a front view of a part of the structure of the dynamic resistance measuring chuck fixing device provided by the present invention;

fig. 3 is a right side view of the screw block of the dynamic resistance measuring chuck fixing device according to the present invention.

In the figure: 1-bottom plate, 2-L-shaped plate, 3-first screw, 4-limiting groove, 5-pressure head, 6-limiting block, 7-thread block, 8-first bearing, 9-connecting rod, 10-second screw, 11-second bearing, 12-connecting plate, 13-arc-shaped splint, 14-vertical plate, 15-rotating shaft, 16-fixing plate, 17-rubber cushion, 18-sliding block, 19-sliding groove, 20-supporting rod and 21-pointer.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

As shown in fig. 1 and 2, a dynamic resistance measuring chuck fixing device includes a bottom plate 1, a vertical plate 14 is disposed in the middle of the top of the bottom plate 1, a pointer 21 is disposed on the back of the vertical plate 14, two fixing devices are symmetrically disposed at two ends of the top of the bottom plate 1, and specifically, the fixing devices include: a fixed plate 16, a connecting plate 12, a connecting rod 9, an arc-shaped clamping plate 13 and a limiting device. Two 16 symmetries of fixed plate set up the both ends at the top of bottom plate 1, equal threaded connection has second screw rod 10 on every fixed plate 16, second screw rod 10 tip on the bottom plate is connected with the one end of second bearing 11, the other end of second bearing 11 is connected with the one end of connecting plate 12, the lower extreme symmetry of connecting plate 12 is equipped with two sliders 18, spout 19 that matches with slider 18 is seted up at the top of bottom plate 1, drive connecting plate 12 through slider 18 and at spout 19's removal, stability when can improve connecting plate 12 and remove, and the use effect is improved.

With continued reference to fig. 1 and 2, the two connecting rods 9 are respectively rotatably connected to the front and back of the other end of the connecting plate 12, the ends of the two connecting rods 9 close to the vertical plate 14 are both connected with arc-shaped splints 13, the two connecting rods 9 are arranged in an X shape, and the arc-shaped splints 13 corresponding to the two connecting rods 9 are symmetrically arranged; all be equipped with cushion 17 on the inner wall of arc splint 13 and the both sides outer wall of riser 14, cushion 17 passes through glue fixed, adopts cushion 17 can prevent to take place to electrocute to increase frictional force, prevent to take place to remove.

The two connecting rods 9 are respectively connected with the front and the back of the connecting plate 12 through two rotating shafts 15 in a rotating mode, and two rotating modes of the two connecting rods 9 are provided, namely one mode is that one end of each rotating shaft 15 is fixedly connected with the connecting plate 12, the connecting rods 9 are rotatably connected with the other end of each rotating shaft 15, namely the connecting rods 9 rotate, and the rotating shafts 15 do not rotate; the other type is that one end of the rotating shaft 15 is rotatably connected with the connecting plate 12, and the connecting rod 9 is fixedly connected with the other end of the rotating shaft 15, namely the connecting rod 9 rotates to drive the rotating shaft 15 to rotate. The connection mode adopted by the embodiment is the first.

With further reference to fig. 1, 2 and 3, the top end of the connecting plate 12 is connected with one end of the L-shaped plate 2, two vertical side plates of the L-shaped plate 2 are not attached to the connecting plate 12, a limiting device matched with the connecting rod 9 is connected to the inner wall of the vertical side plate parallel to the L-shaped plate 2 and the bottom plate 1, and the two connecting rods 9 drive the two arc-shaped clamping plates 13 to be tightened or loosened through the limiting device. Spacing groove 4 has been seted up on the inner wall of the vertical curb plate that L template 2 is parallel with bottom plate 1, and stop device includes: the first screw 3, the first bearing 8, the thread block 7 and the limiting block 6; a through hole is formed in a vertical side plate, perpendicular to the bottom plate 1, of the L-shaped plate 2, the first screw 3 is inserted into the vertical side plate, perpendicular to the bottom plate 1, of the L-shaped plate 2 through the through hole, a first bearing 8 connected with the first screw 3 is arranged at the bottom of the other end of the L-shaped plate 2, the first bearing 8 corresponds to the through hole, a threaded block 7 is sleeved on the outer wall of the first screw 3, and a limiting block 6 matched with the limiting groove 4 is fixedly connected to the top of the threaded block 7, so that the movement stability of the threaded block 7 can be guaranteed, and the using effect can be improved; the back of screw thread piece 7 is equipped with bracing piece 20, on the lateral wall of bracing piece 20 and the lower extreme front side of screw thread piece 7 all be equipped with connecting rod 9 assorted pressure head 5, drive the 15 rotations of revolute axle of two connecting rods 9 simultaneously through screw thread piece 7, bracing piece 20 and two pressure heads 5, and then guarantee two arc splint 13 and measure the tight stability of clamp of chuck to dynamic resistance, improved the result of use.

The working principle is as follows: when in use, the two dynamic resistance measuring chucks are respectively placed between the two pairs of arc-shaped clamping plates 13, the first screw 3 on one side of the rotating block drives the two pressing heads 5 to move, so that the two pressing heads 5 extrude the two connecting rods 9 and the two connecting rods 9 rotate around the corresponding rotating shafts 15, the connecting rods 9 rotate to drive the two arc-shaped clamping plates 13 to mutually approach, the dynamic resistance measuring chucks in the two arc-shaped clamping plates 13 are clamped and fixed to prevent the dynamic resistance measuring chucks from moving, and the stability is improved, the second screw 10 is rotated on the fixing plate 16, the second screw 10 moves and drives the connecting plate 12 to move in the sliding groove 19, so that the dynamic resistance measuring chuck between the two arc-shaped clamping plates 13 is tightly contacted with the vertical plate 14, the dynamic resistance measuring chuck is prevented from moving, the use stability is further improved, the pointer 21 is aligned to the center position of the sample, so that the clamping position of the dynamic resistance measuring chuck for the sample is fixed each time. The working principle of the other side is the same as the principle, and repeated description is not carried out.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a developments resistance measurement chuck fixing device, includes bottom plate (1), its characterized in that, the top middle part of bottom plate (1) is equipped with riser (14), the back of riser (14) is equipped with pointer (21), the both ends symmetry at the top of bottom plate (1) is equipped with two fixing device, fixing device includes:

the fixing plate (16) is arranged at one end of the top of the bottom plate (1), a second screw (10) is movably connected onto the fixing plate (16), and a second bearing (11) is connected to one end, on the bottom plate (1), of the second screw (10);

a connecting plate (12) having one end connected to the second bearing (11);

the L-shaped plate (2) is provided with one end at the top end of the connecting plate (12);

the two connecting rods (9) are respectively and rotatably connected with the front and the back of the other end of the connecting plate (12) through rotating shafts (15), one ends, close to the vertical plate (14), of the two connecting rods (9) are respectively connected with an arc-shaped clamping plate (13), the two connecting rods (9) are arranged in an X shape, and the arc-shaped clamping plates (13) corresponding to the two connecting rods (9) are symmetrically arranged; and

and the limiting devices are arranged on the L-shaped plates (2), and the two connecting rods (9) drive the two arc-shaped clamping plates (13) to be tightened or loosened through the limiting devices.

2. The dynamic resistance measurement collet fixture of claim 1, wherein the limiting means comprises:

the side wall of a vertical side plate of the L-shaped plate (2) parallel to the bottom plate (1) is provided with a through hole;

the first bearing (8) is arranged at the bottom of the other end of the L-shaped plate (2) and corresponds to the through hole, and the first screw (3) penetrates through the through hole and is connected with the first bearing (8); and

the screw block (7) is arranged on the first screw rod (3) between the L-shaped plate (2) and the first bearing (8), a support rod (20) is arranged on the back of the screw block (7), and pressure heads (5) matched with the connecting rods (9) are arranged on the side wall of the support rod (20) and the front side of the lower end of the screw block (7); the two connecting rods (9) are driven to rotate around the rotating shaft (15) through the thread block (7), the supporting rod (20) and the two pressing heads (5).

3. The dynamic resistance measuring chuck fixing device according to claim 2, wherein a limiting groove (4) is formed on the inner wall of the vertical side plate of the L-shaped plate (2) parallel to the bottom plate (1); the limiting device further comprises a limiting block (6) matched with the limiting groove (4), and the limiting block (6) is arranged at the top end of the thread block (7).

4. The dynamic resistance measuring chuck fixing device according to claim 1, wherein both sides of the inner wall of the arc-shaped clamping plate (13) and the outer wall of the vertical plate (14) are provided with rubber pads (17).

5. A dynamic resistance measuring chuck fixing device according to claim 4, characterized in that the rubber pad (17) is fixed by glue.

6. The dynamic resistance measuring chuck fixing device according to claim 1, wherein the lower end of the connecting plate (12) is symmetrically provided with two sliding blocks (18), and the top of the bottom plate (1) is provided with a sliding groove (19) matched with the sliding blocks (18).