Coating performance testing device

Abstract

The utility model provides a coating performance testing device. The coating performance testing device comprises a machine body, at least one test board and a driving unit arranged in the machine body, a bearing platform is arranged on the machine body, and the test board is mounted on the bearing platform; the machine body is provided with a strike test assembly corresponding to the test bench, and the driving unit is connected with the strike test assembly and drives the strike test assembly to do lifting reciprocating motion; the striking test assembly comprises a bearing platform, a protection piece and a striking rod, the protection piece and the striking rod are arranged on the bearing platform, the bearing platform is connected with the driving unit, the protection piece comprises a protection sleeve, the striking rod penetrates out of the protection sleeve, and a test piece is arranged at the tail end of the striking rod; the test piece is suspended above the test bench, and the test bench is used for placing a sample to be tested. The coating performance testing device disclosed by the utility model can solve the problem of eccentricity of the striking rod and improve the stability and the reliability of a test result.

Description

Technical Field

[0001] The utility model relates to the technical field of material performance detection, in particular to a coating performance testing device. Background Art

[0002] As a device that provides power to a car, the engine is an energy conversion device that converts the thermal energy of gasoline, diesel or natural gas into mechanical energy by expanding the combustion gas in a sealed cylinder, pushing the piston to do work. The engine is the heart of the car and affects the power of the car. The piston, piston ring and piston pin are one of the most important moving parts of the engine.

[0003] In order to protect and increase the service life of piston rings and piston shafts, hard nano coatings are applied to them. In view of the importance of piston rings and piston pins and the harsh working environment, it is very important to study the impact resistance of hard nano coatings to ensure the life and efficiency of the engine.

[0004] There are various impact resistance devices on the market, but the striking rod of the existing impact resistance test device has a high eccentricity problem, which makes the test results more random and the test success rate is low. With the increase in the types of test samples and the collection of data, the random test results are obviously unusable, which makes the test results of the coating in the impact resistance test process unstable and unreliable. At the same time, during the test process, the existing impact resistance test device also has the following problems:

[0005] (1) The test sample cannot be fixed during the impact resistance test, and the sample is easy to shift during the test, which may easily lead to invalid test results;

[0006] (2) The test medium is not durable and is consumed quickly, increasing the test cost;

[0007] (3) The platform for placing samples has a fixed height, which has great limitations and can only test one type of sample.

[0008] Therefore, it is necessary to provide a new coating performance testing device to solve the above problems existing in the prior art. Utility Model Content

[0009] The purpose of the utility model is to provide a coating performance testing device to solve at least one defect existing in the above-mentioned prior art, to solve the problem of eccentricity of the striking rod, and to improve the stability and reliability of the test results.

[0010] To achieve the above-mentioned purpose, the coating performance testing device of the utility model includes a machine body, at least one test bench and a driving unit arranged in the machine body; a receiving platform is arranged on the machine body, and the test bench is installed on the receiving platform; an impact test assembly is arranged on the machine body corresponding to the test bench, and the driving unit is connected with the impact test assembly to drive the impact test assembly to perform lifting and reciprocating motion; the impact test assembly includes a load-bearing platform, a protective member arranged on the load-bearing platform and a striking rod, wherein the load-bearing platform is connected with the driving unit, the protective member includes a protective cover, the striking rod is passed through the protective cover, and a test piece is arranged at the tail end of the striking rod; the test piece is suspended above the test bench, and the test bench is used to place the sample to be tested.

[0011] Furthermore, the protective member also includes a flange connected to the end of the protective sleeve, and the flange is detachably connected to the load-bearing platform.

[0012] Furthermore, the protective member is composed of a flange bearing, one end of the flange bearing is detachably connected to the load-bearing platform, and the other end forms the protective sleeve.

[0013] Furthermore, the test piece includes an adapter connected to the striking rod, a fixing cap detachably connected to the adapter, and a test ball; the test ball is installed in a mounting groove provided on the adapter and fixed in the mounting groove by the fixing cap; the test ball protrudes from the end face of one end of the fixing cap away from the adapter.

[0014] Furthermore, the adapter is detachably connected to the tail end of the striking rod.

[0015] Furthermore, the test ball is a tungsten steel ball.

[0016] Furthermore, it also includes a sample clamping fixture arranged on the test table, which is used to clamp and fix the sample to be tested.

[0017] Furthermore, the sample clamping fixture includes a mounting plate, a fixing plate fixed on the mounting plate, and a fastening bolt; the mounting plate is installed on the test bench; a groove is provided on the fixing plate, and the groove is used to place the sample to be tested; the fastening bolt passes through the side wall of the fixing plate and extends into the groove to abut the sample to be tested.

[0018] Furthermore, a sample lifting platform is provided on the test bench, and the sample clamping fixture is installed on the sample lifting platform, and the sample lifting platform is used to adjust the position of the sample clamping fixture.

[0019] Furthermore, the impact test assembly also includes a connecting rod and a limit piece correspondingly mounted on the connecting rod; the limit piece is connected to the body; one end of the connecting rod is connected to the driving unit, and the other end is fixedly connected to the load-bearing platform.

[0020] The coating performance testing device described in the utility model has the following beneficial effects:

[0021] The impact test assembly of the coating performance testing device of the utility model comprises a load-bearing platform, a protective member arranged on the load-bearing platform and a striking rod, wherein the load-bearing platform is connected to the driving unit, and the driving unit drives the load-bearing platform in the impact test assembly to perform lifting and reciprocating motion, the protective member comprises a protective cover, and the striking rod is passed through the protective cover, and the load-bearing platform drives the striking rod to perform lifting and reciprocating motion, and a test piece is arranged at the tail end of the striking rod, and the test piece moves synchronously with the striking rod; the test piece is suspended above the test bench, and the test bench is used to place the sample to be tested, and the test piece strikes the sample to be tested under the action of the striking rod, and the impact resistance performance test is performed on the sample to be tested, wherein the protective cover and the striking rod are synchronously lifted and reciprocated after being assembled by insertion, and the motion trajectory of the striking rod is completely inside the protective cover, which limits the left and right shaking of the striking rod during the movement, and then the motion trajectory of the striking rod in the lifting and reciprocating motion is limited, which solves the problem of eccentricity of the striking rod and improves the stability and reliability of the test results. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 An overall schematic diagram of a coating performance testing device in some embodiments provided by the utility model;

[0023] Figure 2 An assembly diagram of a strike test assembly in some embodiments provided by the utility model;

[0024] Figure 3 Assembly diagrams of adapters and mounting caps in some embodiments of the present invention;

[0025] Figure 4 A bottom view of an adapter in some embodiments provided by the utility model;

[0026] Figure 5 A front view of an adapter in some embodiments provided by the utility model;

[0027] Figure 6 An overall schematic diagram of a sample clamping fixture in some embodiments provided by the utility model;

[0028] Figure 7This is an overall schematic diagram of a sample lifting platform in some embodiments provided by the utility model. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model. Unless otherwise defined, the technical terms or scientific terms used herein should be understood by people with general skills in the field to which the utility model belongs. "Including" and similar words used in this article mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects.

[0030] In view of the problems existing in the prior art, an embodiment of the present utility model provides a coating performance testing device. The specific implementation of the present utility model is further described in detail below in conjunction with the accompanying drawings.

[0031] Figure 1 An overall schematic diagram of a coating performance testing device in some embodiments provided by the utility model; Figure 2 The utility model provides an assembly diagram of the strike test assembly in some embodiments.

[0032] Reference Figure 1 and Figure 2As shown, in some embodiments of the utility model, the utility model provides a coating performance testing device, including a body 1, the body 1 is recessed inward to form a space, and a receiving platform 2 is arranged in the space. At least one test bench 3 is arranged on the receiving platform 2, and a striking test assembly 4 is arranged on the body 1 corresponding to each test bench 3, and the striking test assembly 4 is suspended above the test bench 3. A driving unit is arranged inside the body 1, and the striking test assembly 4 is connected to the driving unit, and the driving unit drives the striking test assembly 4 to perform lifting and reciprocating motion. The side of the test bench 3 facing the striking test assembly 4 is used to place the sample to be tested, and the striking test assembly 4 is lifted and reciprocated under the action of the driving unit to impact the surface of the sample to be tested. Among them, the striking test assembly 4 includes a load-bearing platform 41, a protective member 42 arranged on the load-bearing platform 41, and a striking rod 43. The load-bearing platform 41 is connected to the driving unit, and the driving unit drives the load-bearing platform 41 to perform lifting and reciprocating motion, thereby driving the protective member 42 to perform lifting and reciprocating motion; the protective member 42 includes a protective sleeve 421, and the striking rod 43 passes through the protective sleeve 421 and is connected to the protective sleeve 421. A test piece 44 is provided at the tail end of the striking rod 43, that is, the test piece 44 is provided on the end of the striking rod 43 facing the test bench 3. Driven by the load-bearing platform 41, the striking rod 43 drives the test piece 44 to perform lifting and reciprocating motion, and the test piece 44 reciprocates to impact the surface of the sample to be tested to test the sample to be tested.

[0033] In some specific embodiments of the present invention, there are four test benches 3. The present invention uses multiple test benches to perform independent tests simultaneously, thereby improving the test efficiency.

[0034] In some specific embodiments of the present invention, the protective cover 421 is provided with a through channel, and the striking rod 43 passes through the through channel and out of the protective cover 421 .

[0035] Reference Figure 2As shown, in some embodiments of the utility model, the protective member 42 further includes a flange 422, and the flange 422 is fixed on the load-bearing platform 41 by means of mounting bolts, that is, the flange 422 is detachably connected to the load-bearing platform 41. The flange 422 is connected to one end of the protective sleeve 421, and the through hole of the flange 422 is connected to the through channel of the protective sleeve 421. A through hole is provided on the load-bearing platform 41 corresponding to the through hole of the flange 422, and the protective sleeve 421 passes through the load-bearing platform 41 through the through hole. The striking rod 43 passes through the protective sleeve 421, so that the striking rod 43 passes through the load-bearing platform 41. During the use of the coating performance testing device of the present invention, the striking rod 43 is connected to the load-bearing platform 41 through the flange 422 and the protective sleeve 421. When the load-bearing platform 41 drives the striking rod 43 to perform lifting and reciprocating motion, since the outer diameter of the striking rod 43 is adapted to the inner diameter of the protective sleeve 421, the striking rod 43 and the protective sleeve move synchronously after insertion assembly, and the movement trajectory of the striking rod 43 is restricted to the inside of the protective sleeve 421, which prevents the striking rod 43 from shaking left and right during the movement, restricts the movement trajectory of the striking rod 43 in the lifting and reciprocating motion, solves the eccentricity problem of the striking rod 43, and improves the stability and reliability of the test results.

[0036] In some specific embodiments of the utility model, the protective sleeve 421 is a linear bearing, and the protruding end of the flange 422 is connected to the end of the linear bearing, so that the hollow pipe of the linear bearing is connected to the through hole of the flange. The linear bearing can increase the bearing capacity and stability of the striking rod, reduce friction during movement, increase service life, and reduce vibration to enable the coating performance testing device of the present invention to run smoothly.

[0037] In some other embodiments of the utility model, the protective member 42 is a flange bearing, one end of which is detachably connected to the load-bearing platform 41 by means of mounting screws, and the other end forms a protective sleeve 421 for the striking rod 43 to pass through. A mounting hole is provided on the load-bearing platform 41 corresponding to the flange bearing, and the mounting hole passes through the load-bearing platform 41. The protective sleeve 421 formed at the other end of the flange bearing passes through the mounting hole to pass through the load-bearing platform 41. The striking rod 43 passes through the flange bearing and passes through the protective sleeve 421 to pass through the load-bearing platform 41. During the use of the coating performance testing device of the utility model, the striking rod 43 is connected to the load-bearing platform 41 through the flange bearing. When the load-bearing platform 41 drives the striking rod 43 to perform lifting and reciprocating motions, the flange bearing ensures that the motion trajectory of the striking rod 43 is completely inside the flange bearing, which limits the motion trajectory of the striking rod 43 and solves the eccentricity problem of the striking rod 43.

[0038] In some other more specific embodiments of the present invention, the length of the flange bearing is preferably greater than two-thirds of the length of the striking rod 43 to maintain the relative stability of the striking test assembly, thereby improving the stability and reliability of the test results. For example, the size of the flange bearing is 10*19*55-10*19*80mm.

[0039] Figure 2 An assembly diagram of a strike test assembly in some embodiments provided by the utility model; Figure 3 Assembly diagrams of adapters and mounting caps in some embodiments of the present invention; Figure 4 This is a bottom view of an adapter in some embodiments provided by the utility model.

[0040] Reference Figure 2 , Figure 3 and Figure 4 As shown, in some embodiments of the utility model, the test piece 44 on the striking rod 43 includes an adapter 441 connected to the striking rod 43, a fixing cap 442 detachably connected to the adapter 441, and a test ball 443. The adapter 441 is detachably connected to one end of the striking rod 43 facing the test bench 3 through a thread, so that it can be disassembled and repaired during use. An end of the adapter 441 away from the striking rod 43 is provided with a mounting groove 444, and the mounting groove 444 is adapted to the test ball 443 for accommodating part of the test ball 443. The test ball 443 is installed on the adapter 441 through the mounting groove 444, and the test ball 443 is fixed in the mounting groove 444 through the fixing cap 442. The test ball 443 not accommodated in the mounting groove 444 protrudes from the end face of the fixing cap 442 away from the adapter 441, and the protruding part of the test ball 443 is used to impact the surface of the sample to be tested during the lifting and reciprocating motion. The outer wall of the adapter 441 corresponding to the mounting groove 444 is provided with threads, and the fixing cap 442 is provided with threads matching the threads on the adapter 441. The fixing cap 442 and the adapter 441 are connected by threads to achieve a detachable connection, which is convenient for disassembly and maintenance.

[0041] Figure 5 This is a front view of an adapter in some embodiments provided by the utility model.

[0042] Reference Figure 3 , Figure 4 and Figure 5As shown, in some embodiments of the utility model, a plurality of U-shaped through grooves 4441 are provided on the inner wall of the mounting groove 444, and the plurality of U-shaped through grooves 4441 are evenly distributed on the inner wall of the mounting groove 444, and the U-shaped through grooves 4441 penetrate the inner wall of the mounting groove 444 to connect the inside of the mounting groove 444 with the outside, and when the fixing cap 442 is tightened and fixed on the adapter 441, the U-shaped through groove 4441 is deformed, and the opening of the U-shaped through groove 4441 becomes smaller, and the inner wall of the mounting groove 444 squeezes the side wall of the test ball 443 inward so that the test ball 443 is fixed in the mounting groove 444 of the adapter 441.

[0043] Reference Figure 1 and Figure 2 As shown, in some embodiments of the utility model, the end of the striking rod 43 facing the test bench 3 is the tail end of the striking rod 43, and the tail end of the striking rod 43 is connected to the end of the adapter 441 away from the fixing cap 442 through a threaded connection to achieve a detachable connection, which is convenient for disassembly inspection and later maintenance.

[0044] In some embodiments of the utility model, the test ball 443 is a tungsten steel ball, which has a sufficiently high hardness and excellent wear resistance. After each test, the bottom of the tungsten steel ball needs to be marked, and then the fixing cap 442 is removed and the tungsten steel ball is rotated until the tungsten steel ball has an unmarked part, and then the fixing cap 442 is tightened, and the tungsten steel ball is used to test the next sample to be tested, saving the test cost.

[0045] Reference Figure 2 As shown, in some embodiments of the present invention, the striking test assembly 4 of the coating performance test device of the present invention further includes a connecting rod 45 and a stopper 46 correspondingly sleeved on the connecting rod 45. Specifically, the present invention includes two connecting rods 45, and each connecting rod 45 is sleeved with a stopper 46. One end of the two connecting rods 45 extends into the interior of the body 1 on the side opposite to the receiving platform 2 and is connected to the driving unit, and the other end is connected to the load-bearing platform 41. The driving unit drives the connecting rod 45 to perform lifting and reciprocating motion, thereby driving the load-bearing platform 41 to perform lifting and reciprocating motion. One end of the stopper 46 is connected to the body 1. The setting of the stopper 46 on the connecting rod 45 can ensure that the movement trajectory of the connecting rod 45 is fixed when performing lifting and reciprocating motion, avoid the displacement of the connecting rod 45 during long-term lifting and reciprocating motion, avoid causing the load-bearing platform 41 to shake during motion, prevent indirect influence on the movement trajectory of the striking rod 43, and avoid affecting the test results.

[0046] In some specific embodiments of the present invention, the limiting member 46 may be a linear bearing.

[0047] Reference Figure 2As shown, in some embodiments of the present invention, the side of the load-bearing platform 41 facing away from the test bench 3 can be used to place a weight 47, and the weight 47 is sleeved on the striking rod 43 from top to bottom. The weight 47 and the striking rod 43 are simultaneously driven by the load-bearing platform 41 to perform a lifting and reciprocating motion to strike the sample to be tested. The weight 47 is used to simulate the pressure on the sample to be tested during actual use.

[0048] Reference Figure 1 and Figure 2 As shown, in some embodiments of the present invention, the coating performance testing device of the present invention further includes a sample clamping fixture 6 disposed on the test table 3, which is fixed directly below the corresponding test ball 443 of the test piece 44. The sample clamping fixture 6 clamps and fixes the sample to be tested to fix the position of the sample to be tested, thereby indirectly fixing the test position of the sample to be tested.

[0049] Figure 6 This is an overall schematic diagram of a sample clamping fixture in some embodiments provided by the utility model.

[0050] Reference Figure 1 and Figure 6 As shown, in some specific embodiments of the utility model, the sample clamping fixture 6 includes a mounting plate 61, a fixing plate 62 arranged on the mounting plate 61, and a fastening bolt 63. The mounting plate 61 is fixed on the test bench 3, and the fixing plate 62 is fixed on the side of the mounting plate 61 away from the test bench 3. A groove is provided on the side of the fixing plate 62 away from the mounting plate 61, and the groove is used to place the sample to be tested. One end of the fastening bolt 63 penetrates from the side wall of the fixing plate 62 and extends into the groove to abut against the side wall of the sample to be tested.

[0051] In some specific embodiments of the present invention, there are at least four fastening bolts 63, and the fastening bolts 63 are evenly distributed around the circumferential interval of the fixing plate 62. Each fastening bolt 63 penetrates the side wall of the mounting plate 61 and extends into the groove to abut the sample to be tested from all sides of the sample. The fastening bolts 63 are tightened one by one from the front, back, left and right of the sample to be tested to fix the sample to be tested, thereby ensuring that the sample to be tested will not shift during the test process.

[0052] Reference Figure 1 and Figure 6 As shown, in some embodiments of the present invention, a sample lifting platform 7 is further provided on the test platform 3, and a sample clamping fixture 6 is installed on the sample lifting platform 7. The sample lifting platform 7 is used to adjust the position of the sample clamping fixture 6, and then adjust the position of the sample to be tested. A plurality of through screw holes 611 are provided on the mounting plate 61, and each through screw hole 611 corresponds to a fixing bolt, and the fixing bolt passes through the through screw hole 611 to fix the mounting plate 61 on the sample lifting platform 7. Specifically, there are four through screw holes 611 on the mounting plate 61.

[0053] Figure 7 This is an overall schematic diagram of a sample lifting platform in some embodiments provided by the utility model.

[0054] Reference Figure 7 As shown, in some specific embodiments of the present invention, the sample lifting platform 7 includes a lifting body 71 and a height adjustment button 72. The height adjustment button 72 is arranged on the side of the lifting body 71. Rotating the height adjustment button 72 clockwise can make the lifting body 71 descend, and rotating the height adjustment button 72 counterclockwise can make the lifting body 71 rise. Among them, the mounting plate 61 is fixed on the side of the lifting body 71 facing the load-bearing platform 41. The sample lifting platform in the utility model adopts thread, nut, aluminum material rivet connection, which has a simple structure, is not easy to rust, and has good stability. In some more specific embodiments, the sample lifting platform in the utility model is arranged one by one with the test bench. Each sample lifting platform can adjust the height independently, and cooperates with the corresponding test bench to perform a separate test on the sample to be tested, so that the coating performance testing device of the utility model can test various types of samples.

[0055] In other embodiments of the present invention, the mounting plate 61 passes through screw holes 611 , each screw hole 611 corresponds to a fixing bolt, and the fixing bolt passes through the screw holes 611 to fix the mounting plate 61 on the test bench 3 .

[0056] Reference Figure 1 and Figure 2 As shown, in some embodiments of the utility model, a processor, a signal receiver and a command transmitter are arranged inside the body 1. A power switch 21, a display screen 22 and a speed switch 23 are arranged on the outer wall of the body 1. The display screen 22, the speed switch 23, the processor, the signal receiver, and the command transmitter are all electrically connected to the power switch 21 or are connected by communication. Among them, the command transmitter is electrically connected to the display screen 22 and the speed switch 23. The signal receiver and the command transmitter are respectively connected by communication with the processor. The signal receiver is used to drive the connecting rod 45 to move. After starting the power switch 21, the test parameters will be displayed on the display screen 22, the required number of tests will be set, and the movement speed of the connecting rod 45 will be set by adjusting the speed switch 23. The number of tests, the movement speed and the instructions for starting the test are summarized to the command transmitter, and the command transmitter sends all the instructions to the processor, and the processor sends them to the signal receiver after processing. After receiving the instructions, the signal receiver drives the connecting rod 45 to move up and down at the corresponding speed and the corresponding number of tests, and indirectly drives the striking rod 43 and the test ball 443 to move synchronously.

[0057] In some specific embodiments of the utility model, a stepper motor and a linear slider are also provided inside the body 1. The stepper motor is connected to the linear slider. A "convex"-shaped fixing fixture is provided on the linear slider, and the linear slider is connected to the connecting rod 45 through the fixing fixture to form one end of the load-bearing platform 41. The stepper motor is connected to the signal processor and rotates under the action of the signal processor, so that the linear slider drives the connecting rod 45 to perform lifting and reciprocating motion. Among them, converting the rotation of the stepper motor into the linear motion of the linear slider is a conventional technical means, which will not be described in detail here.

[0058] The use process of the coating performance test device of the utility model is as follows: first, the mounting plate 61 of the sample clamping fixture 6 is placed on the lifting body 71 of the sample lifting platform 7, and the mounting plate 61 is fixed to the lifting body 71 using the fixing bolts. Then, the sample to be tested is placed in the groove of the fixing plate 62, and the fastening bolts 63 are inserted from the side wall of the fixing plate 62, and the ends of the fastening bolts 63 are against the side wall of the sample to be tested, and the fastening bolts 63 are tightened one by one to ensure that the sample to be tested is locked to prevent the sample to be tested from moving during the test. According to the thickness of the sample to be tested, the height adjustment button 72 of the side wall of the lifting body 71 is adjusted so that the sample to be tested is in the test position to complete the assembly of the sample to be tested. Turn on the power switch 21, the display screen 22 displays the test parameters, set the required number of tests, and control the lifting speed of the connecting rod 45 by adjusting the speed regulating switch 23. After the setting is completed, click to start the test, the connecting rod 45 drives the load-bearing platform 41 and then drives the striking rod 43 to perform lifting and reciprocating motion, and the striking rod 43 drives the test piece 44 to perform a striking test on the sample to be tested.

[0059] After the test of the sample to be tested is completed using the coating performance testing device of the present invention, the tested sample to be tested is placed under a 3D microscope for observation at a magnification of X300 to determine the test result.

[0060] Although the embodiments of the present invention are described in detail above, it is obvious to those skilled in the art that various modifications and variations can be made to these embodiments. However, it should be understood that such modifications and variations are within the scope and spirit of the present invention as described in the claims. Moreover, the present invention described herein may have other embodiments and may be implemented or realized in a variety of ways.

Claims

1. A coating performance testing device, characterized in that: It comprises a machine body, at least one test bench and a driving unit arranged in the machine body; The machine body is provided with a receiving platform, and the test bench is mounted on the receiving platform; The machine body is provided with a striking test assembly corresponding to the test bench, and the driving unit is connected to the striking test assembly to drive the striking test assembly to perform lifting and reciprocating motion; The striking test assembly comprises a load-bearing platform, a protective member arranged on the load-bearing platform, and a striking rod, wherein the load-bearing platform is connected to the driving unit, the protective member comprises a protective sleeve, the striking rod passes through the protective sleeve, and a test piece is arranged at the tail end of the striking rod; The test piece is suspended above the test table, and the test table is used to place the sample to be tested.

2. The coating performance testing device according to claim 1, characterized in that: The protective member also includes a flange connected to the end of the protective sleeve, and the flange is detachably connected to the load-bearing platform.

3. The coating performance testing device according to claim 1, characterized in that: The protective member is composed of a flange bearing, one end of which is detachably connected to the load-bearing platform, and the other end of which forms the protective sleeve.

4. The coating performance testing device according to claim 1, characterized in that: The test piece includes an adapter connected to the striking rod, a fixing cap detachably connected to the adapter, and a test ball; The test ball is installed in a mounting groove provided on the adapter and fixed in the mounting groove by the fixing cap; The testing ball protrudes from an end surface of the fixing cap which is away from the adapter.

5. The coating performance testing device according to claim 4, characterized in that: The adapter is detachably connected to the tail end of the striking rod.

6. The coating performance testing device according to claim 4, characterized in that: The test ball is a tungsten steel ball.

7. The coating performance testing device according to claim 1, characterized in that: It also includes a sample clamping fixture arranged on the test table, which is used to clamp and fix the sample to be tested.

8. The coating performance testing device according to claim 7, characterized in that: The sample clamping fixture comprises a mounting plate, a fixing plate fixed on the mounting plate, and a fastening bolt; The mounting plate is mounted on the test bench; The fixing plate is provided with a groove, and the groove is used to place the sample to be tested; The fastening bolt passes through the side wall of the fixing plate and extends into the groove to abut against the sample to be tested.

9. The coating performance testing device according to claim 7, characterized in that: The test bench is also provided with a sample lifting platform, the sample clamping fixture is installed on the sample lifting platform, and the sample lifting platform is used to adjust the position of the sample clamping fixture.

10. The coating performance testing device according to claim 1, characterized in that: The impact test assembly also includes a connecting rod and a stopper correspondingly sleeved on the connecting rod; The limiting member is connected to the body; One end of the connecting rod is connected to the driving unit, and the other end is fixedly connected to the load-bearing platform.

Images