CN210720118U

CN210720118U - Sample preparation clamp for detecting bonding strength of thermal spraying coating

Info

Publication number: CN210720118U
Application number: CN201921460662.1U
Authority: CN
Inventors: 王彦淞; 郭华锋; 王楚; 徐浩然; 宋逸飞; 朱可欣; 杨明烨; 于萍
Original assignee: Xuzhou University of Technology
Current assignee: Xuzhou University of Technology
Priority date: 2019-09-04
Filing date: 2019-09-04
Publication date: 2020-06-09
Anticipated expiration: 2029-09-04

Abstract

The utility model belongs to the technical field of the anchor clamps, concretely relates to a system appearance anchor clamps for detecting hot spraying coating bonding strength, including lower semicircle siphunculus and the last semicircle siphunculus that cooperatees with lower semicircle siphunculus and constitutes the pipe, the both ends of lower semicircle siphunculus are fixed respectively and are provided with front splint and back splint, threaded connection has the screw rod propeller that can screw in the lower semicircle siphunculus on the front splint; the rear clamping plate is a round pipe fitting, a top cover is in threaded connection with one end of the rear clamping plate, which is far away from the lower semicircular through pipe, a pressure sensor is in threaded connection with one end of the top cover, which extends into the rear clamping plate, and the threaded end of the pressure sensor extends out of the top cover to be in threaded connection with a pressure display screen; one side of the pressure sensor, which is far away from the threaded end, is provided with a cylinder structure, a thimble is inserted into the cylinder structure of the pressure sensor, the thimble penetrates through the rear clamping plate and extends into the lower semicircular through pipe, and a spring is arranged at one end of the rear clamping plate, which extends into the lower semicircular through pipe. The clamp has the advantages of low cost, convenient operation, good coaxiality, controllable clamping force and the like.

Description

Sample preparation clamp for detecting bonding strength of thermal spraying coating

Technical Field

The utility model belongs to the technical field of anchor clamps, concretely relates to system appearance anchor clamps for detecting hot spraying coating bonding strength.

Background

The bonding strength of the coating and the substrate is the most key index for evaluating the quality and performance of the coating, and is the premise for ensuring that the coating meets the use performances of machinery, materials and the like. The method for testing the bonding strength of the coating can be classified into qualitative and quantitative methods, the bonding and stretching method belongs to a quantitative method, and is generally adopted at present, and a sample needs a longer time for curing a bonding agent after being coated with glue, so that the two samples are bonded together. In the bonding process, the sample is easy to shake, so that the coaxiality precision of the sample is not high, the measured value is influenced by factors such as misalignment of the sample during loading, permeation of a bonding agent into pores of a coating and the like, and the experimental result is dispersed.

The existing clamp can mostly complete a common clamping function, because a sample needs a large amount of time to cure the binder in a high-temperature environment after being glued, the clamp cannot meet the requirement of the binder curing pressure under the condition of being held by the hand of a user, and the clamp for loading the sample cannot ensure that the sample does not shake or misplace when being placed into a heat treatment furnace, so that the coaxiality of the sample cannot be maintained, and the test cannot be loaded and centered when being stretched.

Disclosure of Invention

In order to overcome the defects of the prior art, the utility model provides a system appearance anchor clamps for detecting hot spraying coating bonding strength.

The utility model discloses a realize through following technical scheme: a sample preparation clamp for detecting the bonding strength of a thermal spraying coating comprises a lower semicircular through pipe and an upper semicircular through pipe matched with the lower semicircular through pipe to form a circular pipe, wherein a front clamping plate and a rear clamping plate are fixedly arranged at two ends of the lower semicircular through pipe respectively; the rear clamping plate is a round pipe fitting, a top cover is in threaded connection with one end of the rear clamping plate, which is far away from the lower semicircular through pipe, a pressure sensor is in threaded connection with one end of the top cover, which extends into the rear clamping plate, and the threaded end of the pressure sensor extends out of the top cover to be in threaded connection with a pressure display screen; a cylindrical structure is arranged on one side, away from the threaded end, of the pressure sensor, a thimble is inserted into the cylindrical structure of the pressure sensor, the thimble penetrates through the rear clamping plate and extends into the lower semicircular through pipe, a cylindrical structure is arranged at one end, extending into the lower semicircular through pipe, of the rear clamping plate, a spring is sleeved on the cylindrical structure of the rear clamping plate, and one end, away from the rear clamping plate, of the spring is flush with one end, located on the lower semicircular through pipe, of the thimble; the lower semicircular through pipe and the upper semicircular through pipe are fastened through a hoop.

Furthermore, the front clamping plate is of a box body structure, a nut is clamped in the box body, and the screw rod propeller is in threaded connection with the nut.

Furthermore, a cylindrical structure is arranged on one side, fixed with the lower semicircular through pipe, of the front clamping plate, and the inner circumference of the lower semicircular through pipe is in positioning fit with the cylindrical structure of the front clamping plate; the rear clamping plate and the fixed side of the lower semicircular through pipe are also provided with a cylindrical structure, and the inner circumference of the lower semicircular through pipe is matched with the cylindrical structure of the rear clamping plate in a positioning manner.

Furthermore, the front splint and the lower semicircular through pipe are fixed by welding; the rear clamping plate and the lower semicircular through pipe are fixed by welding.

Further, the screw rod propeller comprises a screw rod and a push plate fixedly connected with the non-threaded end of the screw rod.

Furthermore, one side of the hoop is provided with a screw locking device which controls the size of a closed ring enclosed by the hoop by rotating a screw.

In the application, the front clamping plate, the rear clamping plate and the lower semicircular through pipe form a bar material loader; the thimble, the pressure sensor, the top cover and the pressure display screen form a pressure module;

the specific use method of the clamp comprises the following steps: firstly, two bars are coated, then the two bars after being coated are placed in the lower semicircular through pipe, the upper semicircular through pipe is covered on the two bars after the bars are placed, the upper semicircular through pipe and the lower semicircular through pipe are aligned, the clamp is moved to the positions of the upper semicircular through pipe and the lower semicircular through pipe and is locked, the upper semicircular through pipe is firmly fixed, the thimble is placed into the unthreaded end of the pressure sensor, the pressure sensor is connected with the top cover, the thimble penetrates through the inner hole of the rear clamping plate, one end of the thimble is flushed with the spring by adjusting the threaded screwing-in length of the top cover and the rear clamping plate (the end of the upper semicircular through pipe is provided with an opening, whether the thimble is aligned with one end of the spring, which is far away from the rear clamping plate, and the pressure display screen is connected with the pressure sensor. Inserting the screw rod propeller into the front clamping plate, propelling the screw rod, observing the pressure display screen, unloading the pressure module (the pressure module consists of a thimble, a pressure sensor, a top cover and the pressure display screen) after clamping is finished when the screw rod propeller reaches a proper position, and putting the clamp into the oven.

The utility model has the advantages that: compared with the prior art, the clamp has the advantages of low cost, convenient operation, good coaxiality, controllable clamping force and the like; radial and axial position that can fix the bar, pressure condition when can satisfying partial binder solidification makes the bar have better axiality and can not take place to rock the cross-section when the solidification binder and can fully contact with the binder to accomplish the binder solidification, the very little function of two bar axiality deviations makes the experiment steadily go on, improves the experiment precision.

Drawings

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

fig. 2 is a schematic view of the assembly of the rear clamping plate and the pressure module of the present invention;

FIG. 3 is a schematic view of the front plate structure of the present invention;

FIG. 4 is a schematic view of the structure of the rear splint of the present invention;

FIG. 5 is a schematic view of the structure of the bar stock carrier of the present invention;

FIG. 6 is a schematic view of the screw propeller of the present invention;

fig. 7 is a schematic view of the spring structure of the present invention;

fig. 8 is a schematic view of the clamp structure of the present invention.

In the figure: 1. a lower semicircular through pipe; 2. a front splint; 3. a screw propeller; 4. a nut; 5. an upper semicircular through pipe; 6. a thimble; 7. a spring; 8. a rear splint; 9. a pressure sensor; 10. a pressure display screen; 11. clamping a hoop; 12. a top cover; 13. and (4) a bar stock.

Detailed Description

The invention will be further explained below with reference to the drawings and examples.

As shown in fig. 1 to 8, a sample preparation clamp for detecting the bonding strength of a thermal spray coating comprises a lower semicircular through pipe 1 and an upper semicircular through pipe 5 which is matched with the lower semicircular through pipe 1 to form a circular pipe, wherein a front clamping plate 2 and a rear clamping plate 8 are respectively fixedly arranged at two ends of the lower semicircular through pipe 1, furthermore, a cylindrical structure is arranged at one side of the lower semicircular through pipe 1, which is fixed with the front clamping plate 2, and the inner circumference of the lower semicircular through pipe 1 is in positioning fit with the cylindrical structure of the front clamping plate 2; the rear clamping plate 8 is also provided with a cylindrical structure at one side fixed with the lower semicircular through pipe 1, and the inner circumference of the lower semicircular through pipe 1 is matched with the cylindrical structure of the rear clamping plate 8 in a positioning way. The screw propeller 3 which can be screwed into the lower semicircular through pipe 1 is in threaded connection with the front splint 2, and the spiral central line of the screw propeller 3 is coaxial with the circumferential line of the lower semicircular through pipe 1; the rear clamping plate 8 is a circular tube, one end of the rear clamping plate 8, which is far away from the lower semicircular through pipe 1, is in threaded connection with a top cover 12, two sides of the pressure sensor 9 are respectively provided with a threaded connecting rod and a non-threaded sleeve, one end of the top cover 12, which extends into the rear clamping plate 8, is in threaded connection with the threaded connecting rod of the pressure sensor 9, and the threaded connecting rod of the pressure sensor 9 extends out of the top cover 12 and is in threaded connection with the pressure display screen 10; a thimble 6 is inserted into a cylinder of the pressure sensor 9, the thimble 6 penetrates through the rear clamping plate 8 and extends into the lower semicircular through pipe 1, a cylinder structure is arranged at one end of the rear clamping plate 8 extending into the lower semicircular through pipe 1, a spring 7 is sleeved on the cylinder structure of the rear clamping plate 8, and one end, far away from the rear clamping plate 8, of the spring 7 is flush with one end, located on the lower semicircular through pipe 1, of the thimble 6; lower semicircle siphunculus 1 passes through the clamp 11 fastening with last semicircle siphunculus 5, furtherly, one side of clamp 11 be equipped with through rotatory screw rod control clamp 11 enclose the screw rod locking device of the size of the closed ring that encloses.

The application comprises the following specific using methods: firstly, coating two bars 13, then placing the two bars 13 in a lower semicircular through pipe 1, covering an upper semicircular through pipe 5 on the two bars 13 after the bars 13 are placed, positioning the upper semicircular through pipe 5 by a cylindrical structure of a front splint 2 and a cylindrical structure of a rear splint 8, centering the upper semicircular through pipe 5 and the lower semicircular through pipe 1, moving a clamp 11 to the positions of the upper semicircular through pipe 5 and the lower semicircular through pipe 1, locking the clamp 13 by rotating a screw rod in a screw rod locking device to firmly fix the upper semicircular through pipe 5, placing a thimble 6 in a non-threaded end of a pressure sensor 9, connecting the pressure sensor 9 with a top cover 12, penetrating the thimble 6 through an inner hole of the rear splint 8, adjusting the thread screwing length of the top cover 12 and the rear splint 8 to enable one end of the thimble 6 to be flush with a spring 7 (the end part of the upper semicircular through pipe 5 is provided with an opening, can observe whether the thimble 6 is aligned with one end of the spring 8 far away from the rear clamping plate 8 or not through the opening), and the pressure display screen 10 is connected with the pressure sensor 9. Inserting the screw rod propeller 3 into the front clamping plate 2, propelling the screw rod, observing the pressure display screen 10, unloading the pressure module (the pressure module consists of the thimble 6, the pressure sensor 9, the top cover 12 and the pressure display screen 10) after the clamping is finished when the screw rod propeller reaches a proper position, and putting the clamp into the oven.

Furthermore, the front clamping plate 2 is of a box body structure, a nut 4 is clamped in the box body, and the screw rod propeller 3 is in threaded connection with the nut 4.

Furthermore, the front splint 2 and the lower semicircular through pipe 1 are fixed by welding; the rear clamping plate 8 and the lower semicircular through pipe 1 are fixed by welding. The lower semicircular through pipe 1 can also be provided with convex fan-shaped connecting plates at two end parts and is connected with the front clamping plate 2 and the rear clamping plate 8 through the fan-shaped connecting plates at two sides.

Further, the screw propeller 3 comprises a screw and a push plate fixedly connected with the non-threaded end of the screw. The push plate is held by hand to rotate and linearly move the screw propeller 3.

The utility model provides a be arranged in detecting system appearance anchor clamps of hot spraying coating bonding strength between each part stable connection makes anchor clamps can realize the axial and the radial movement of restriction bar and guarantee its axiality, can stabilize not rocking again the in-process that the boiler was put into to the bar, also can keep the pressure of binder in curing process, keeps the accuracy of erosion experiment, lasts going on.

Claims

1. A system appearance anchor clamps for detecting hot spraying coating bonding strength which characterized in that: the device comprises a lower semicircular through pipe (1) and an upper semicircular through pipe (5) which is matched with the lower semicircular through pipe (1) to form a circular pipe, wherein a front clamping plate (2) and a rear clamping plate (8) are respectively and fixedly arranged at two ends of the lower semicircular through pipe (1), a screw propeller (3) which can be screwed into the lower semicircular through pipe (1) is in threaded connection with the front clamping plate (2), and the spiral central line of the screw propeller (3) is coaxial with the circumferential line of the lower semicircular through pipe (1); the rear clamping plate (8) is a circular pipe, one end, far away from the lower semicircular through pipe (1), of the rear clamping plate (8) is in threaded connection with a top cover (12), one end, extending into the rear clamping plate (8), of the top cover (12) is in threaded connection with a pressure sensor (9), and the threaded end of the pressure sensor (9) extends out of the top cover (12) and is in threaded connection with a pressure display screen (10); a cylindrical structure is arranged on one side, away from the threaded end, of the pressure sensor (9), a thimble (6) is inserted into the cylindrical structure of the pressure sensor (9), the thimble (6) penetrates through the rear clamping plate (8) and extends into the lower semicircular through pipe (1), a cylindrical structure is arranged at one end, extending into the lower semicircular through pipe (1), of the rear clamping plate (8), a spring (7) is sleeved on the cylindrical structure of the rear clamping plate (8), and one end, away from the rear clamping plate (8), of the spring (7) is flush with one end, located on the lower semicircular through pipe (1), of the thimble (6); the lower semicircular through pipe (1) and the upper semicircular through pipe (5) are fastened through a hoop (11).

2. The sample preparation fixture for detecting the bonding strength of the thermal spray coating according to claim 1, wherein: the front clamping plate (2) is of a box body structure, a nut (4) is clamped in the box body, and the screw rod propeller (3) is in threaded connection with the nut (4).

3. The sample preparation fixture for detecting the bonding strength of the thermal spray coating according to claim 1, wherein: a cylindrical structure is arranged on one side, fixed with the lower semicircular through pipe (1), of the front splint (2), and the inner circumference of the lower semicircular through pipe (1) is in positioning fit with the cylindrical structure of the front splint (2); the rear clamping plate (8) and the fixed side of the lower semicircular through pipe (1) are also provided with a cylindrical structure, and the inner circumference of the lower semicircular through pipe (1) is matched with the cylindrical structure of the rear clamping plate (8) in a positioning manner.

4. The sample preparation fixture for detecting the bonding strength of the thermal spray coating according to claim 1 or 3, wherein: the front splint (2) and the lower semicircular through pipe (1) are fixed by welding; the rear clamping plate (8) and the lower semicircular through pipe (1) are fixed by welding.

5. The sample preparation fixture for detecting the bonding strength of the thermal spray coating according to claim 1, wherein: the screw propeller (3) comprises a screw and a push plate fixedly connected with the non-threaded end of the screw.

6. The sample preparation fixture for detecting the bonding strength of the thermal spray coating according to claim 1, wherein: one side of the hoop (11) is provided with a screw locking device which controls the size of a closed ring enclosed by the hoop (11) by rotating a screw.