Irregular sample clamp for salt spray test

Abstract

The invention discloses an irregular sample clamp for a salt spray test, which comprises a support, an angle adjusting plate, at least one profiling flexible clamping seat and at least one auxiliary clamping assembly, the angle adjusting plate is arranged on the support, the angle adjusting plate can adjust the angle, a plurality of positioning holes are formed in the angle adjusting plate, and the auxiliary clamping assembly is arranged on the angle adjusting plate. The auxiliary clamping assembly comprises a clamping base, a telescopic adjusting rod and a pressing plate, the profiling flexible clamping base and the clamping base can be connected to the angle adjusting plate through positioning holes, a plurality of extending elastic jacking columns are arranged on the side face of the profiling flexible clamping base and used for abutting against the curved surface of a sample, a clamping part is arranged at one end of the clamping base, and the clamping part is used for clamping the curved surface of the sample. The telescopic adjusting rod is vertically and upwards connected to the clamping base, the pressing plate is connected to the upper end of the telescopic adjusting rod, and a jacking part is arranged at one end of the pressing plate and used for pressing the top of a sample. According to the invention, an irregular sample can be more flexibly clamped and can be overturned to a required test angle.

Description

Technical Field

[0001] The invention relates to the technical field of sample clamping in a salt spray test, and in particular to an irregular sample clamp for a salt spray test. Background Art

[0002] The salt spray test is an artificial accelerated corrosion test that uses a salt spray test chamber to simulate salt spray conditions by spraying a salt solution airflow into a mist to assess the corrosion resistance of products or metal materials.

[0003] The salt spray test process is affected by many factors, including the temperature and humidity of the salt spray test chamber, the amount of salt spray deposition, the concentration of the salt solution, the pH of the salt solution, the angle of sample placement, etc. However, the existing salt spray test chamber only provides a salt spray test environment box and a simple round rod and V-shaped sample rack, which has the following disadvantages:

[0004] 1. For irregular samples, the round rods and V-shaped sample racks in the existing salt spray test chambers cannot ensure that the clamping angle is within the standard requirements, resulting in human factors in the test results due to the placement angle error. In addition, irregular samples are easily displaced during the test, causing contact between samples, or even falling to the bottom of the chamber, resulting in result errors and damage to the samples.

[0005] 2. For small samples such as round bars, the round bars and V-shaped sample racks that are equipped with existing salt spray test chambers cannot be clamped well, and they are easy to fall off during the test, causing error in the results and loss of samples. Summary of the invention

[0006] The purpose of the present invention is to provide an irregular sample fixture for salt spray test, which can clamp the irregular sample more flexibly and can be turned to a required test angle.

[0007] The purpose of the present invention is achieved through the following technical solutions:

[0008] The irregular sample fixture for salt spray test is characterized in that it comprises a bracket, an angle adjustment plate, at least one contoured flexible clamping seat and at least one auxiliary clamping assembly, the angle adjustment plate is arranged on the bracket, the angle adjustment plate can be adjusted by flipping, a plurality of positioning holes are arranged on the angle adjustment plate, the auxiliary clamping assembly comprises a clamping base, a telescopic adjustment rod and a pressing plate, the contoured flexible clamping seat and the clamping base can be connected to the angle adjustment plate through the positioning holes, a plurality of extended elastic top columns are arranged on the side of the contoured flexible clamping seat, the elastic top columns can be pressed into the contoured flexible clamping seat and have an outward resilience, the elastic top columns are used to abut against the curved surface of the sample, one end of the clamping base is provided with a clamping portion for abutting against the side of the sample, the telescopic adjustment rod is vertically connected to the clamping base, the pressing plate is connected to the upper end of the telescopic adjustment rod, one end of the pressing plate is provided with a pressing portion, the pressing portion extends to the side of the pressing plate, and the pressing portion is used to press against the top of the sample.

[0009] A further technical solution of the present invention is that the pressing part is arranged to be inclined downward.

[0010] A further technical solution of the present invention is that the clamping portion is provided with an arc surface for abutting against the side surface of the sample.

[0011] A further technical solution of the present invention is that the bracket includes a support plate and pillars vertically fixed on both sides of the support plate, an axial hole is provided at the upper end of the pillar, and a rotating shaft is respectively provided on both sides of the angle adjustment plate, the rotating shaft is inserted into the axial hole, and the fit between the rotating shaft and the axial hole is a tight fit.

[0012] A further technical solution of the present invention is that the positioning hole includes a round hole and an elongated hole.

[0013] A further technical solution of the present invention is that a waist hole is provided on the clamping base, a connecting bolt is passed through the waist hole, the connecting bolt is used to cooperate and pass through the positioning hole, and a fixing nut is connected to the connecting bolt to achieve fixation.

[0014] A further technical solution of the present invention is that a first threaded column is provided at the lower end of the telescopic adjustment rod, a threaded hole is provided on the clamping base, and the first threaded column is used to be matched and connected in the threaded hole.

[0015] A further technical solution of the present invention is that a connecting portion is provided at the upper end of the telescopic adjusting rod, the connecting portion is provided with an external thread, two clamping nuts are connected to the connecting portion, a through hole is provided at a position of the pressure plate away from the top pressure portion, the pressure plate is passed through the through hole on the connecting portion, and is clamped between the two clamping nuts.

[0016] A further technical solution of the present invention is that the material of the bracket, the angle adjustment plate, the pressure plate, the clamping base and the elastic top column is POM, or nylon, or PVC.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The present invention can adapt to the curved surface of irregular samples through several elastic top columns of the contoured flexible clamping seat, clamp the curved surface part of the irregular sample, clamp the side of the sample through the side of the clamping base and the telescopic adjustment rod, and press the top of the sample through the top pressing part of the pressing plate. It can be seen that the present invention can clamp the top, side, and curved surface of irregular samples, and the fixed position of the contoured flexible clamping seat and the clamping base on the angle adjustment plate can be adjusted, thereby realizing flexible clamping of irregular samples. The sample clamped on the sample fixture of the present invention can be adjusted in angle by flipping the angle adjustment plate, so as to conveniently adjust the sample to the angle required for the test. It can be seen that the sample fixture of the present invention has high versatility and is suitable for clamping and fixing a variety of irregular samples, so that the test can restore the use state of the sample to the maximum extent and meet the angle specified by the standard.

[0019] 2. The contoured flexible clamping seat and the auxiliary clamping assembly of the present invention are assembled and installed in combination, which is easy to assemble and disassemble, and is easy for test personnel to assemble, thereby improving the test work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a three-dimensional schematic diagram of an irregular sample clamp of an embodiment of the present invention having four auxiliary clamping assemblies and a contoured flexible clamping seat;

[0021] Figure 2 is a schematic structural diagram of an auxiliary clamping assembly according to an embodiment of the present invention;

[0022] Figure 3 is a schematic structural diagram of an angle adjustment plate and a bracket when assembled together according to an embodiment of the present invention;

[0023] Figure 4 2 is a schematic structural diagram of a contoured flexible clamping seat according to an embodiment of the present invention;

[0024] Figure 5 is a side view schematic diagram of an irregular sample clamp of an embodiment of the present invention clamping a motor;

[0025] Figure 6 is a top view schematic diagram of an irregular sample fixture of an embodiment of the present invention clamping a spherical sample;

[0026] Figure 7 It is a top view schematic diagram of the irregular sample clamp of an embodiment of the present invention clamping a curved tubular sample.

[0027] Meaning of reference numerals in the figure:

[0028] 1- bracket; 1.1- support plate; 1.2- pillar; 1.3- axial hole; 2- angle adjustment plate; 2.1- rotating shaft; 2.2- positioning hole; 3- auxiliary clamping assembly; 3.1- clamping base; 3.2- telescopic adjustment rod; 3.3- pressure plate; 3.4- pressing part; 3.5- clamping nut; 3.6- first threaded column; 3.7- threaded hole; 3.8- connecting bolt; 3.9- waist hole; 3.10- clamping part; 4- contoured flexible clamping seat; 4.1- elastic top column; 4.2- spring; 4.3- locking bolt; 5- motor; 6- spherical sample; 7- tubular sample; 7.1- bending part of tubular sample. DETAILED DESCRIPTION

[0029] The present invention is further described below in conjunction with embodiments.

[0030] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0031] In the description of the present invention, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0032] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0033] Example:

[0034] like Figure 1 The irregular sample fixture for salt spray test of this embodiment is shown, which includes a bracket 1, an angle adjustment plate 2, at least one contoured flexible clamping seat 4 and at least one auxiliary clamping assembly 3. The number of contoured flexible clamping seats 4 and auxiliary clamping assemblies 3 is adjusted according to the shape of the irregular sample to be clamped. Figure 1 Four auxiliary clamping assemblies 3 and a contoured flexible clamping seat 4 are shown in the figure. The irregular samples can be samples such as motors, sheet metal parts, wheels, lamps, etc.

[0035] The bracket 1 of this embodiment includes a support plate 1.1 and pillars 1.2 vertically fixed on both sides of the support plate 1.1. The upper ends of the pillars 1.2 are provided with shaft holes 1.3. The two sides of the angle adjustment plate 2 are respectively provided with rotating shafts 2.1. The rotating shafts 2.1 are inserted into the shaft holes 1.3. The cooperation between the rotating shafts 2.1 and the shaft holes 1.3 is a tight fit. The angle adjustment plate 2 is arranged on the bracket 1 by the cooperation of the rotating shafts 2.1 and the shaft holes 1.3, and can be flipped to adjust the angle. The angle adjustment plate 2 is provided with a plurality of positioning holes 2.2. The positioning holes 2.2 of this embodiment include round holes and elongated holes. The elongated holes are arranged on both sides of the angle adjustment plate 2.

[0036] like Figure 2 As shown, the auxiliary clamping assembly 3 includes a clamping base 3.1, a telescopic adjustment rod 3.2 and a pressure plate 3.3. The clamping base 3.1 is provided with a waist hole 3.9, and a connecting bolt 3.8 is passed through the waist hole 3.9. When the clamping base 3.1 needs to be fixed on the angle adjustment plate 2, the connecting bolt 3.8 passes through the positioning hole 2.2, and then connected with the fixing nut to achieve fixed connection. By connecting to different positioning holes 2.2 and adjusting the position between the waist hole 3.9 and the connecting bolt 3.8, the position of the clamping base 3.1 can be flexibly adjusted. One end of the clamping base 3.1 is provided with a clamping portion 3.10 for abutting against the side of the sample, and the side of the clamping portion 3.10 is a circular arc surface.

[0037] The telescopic adjustment rod 3.2 is a conventional rod capable of telescopic adjustment. A first threaded column 3.6 is provided at the lower end of the telescopic adjustment rod 3.2, and a threaded hole 3.7 is provided on the clamping base 3.1. Through the cooperation and connection between the first threaded column 3.6 and the threaded hole 3.7, the telescopic adjustment rod 3.2 can be fixedly connected to the clamping base 3.1, and it is easy to disassemble.

[0038] The upper end of the telescopic adjustment rod 3.2 is provided with a connecting portion, the connecting portion is provided with an external thread, the connecting portion is connected to two clamping nuts 3.5, one end of the pressing plate 3.3 is provided with a through hole, the pressing plate 3.4 is passed through the through hole on the connecting portion, and is clamped between the two clamping nuts 3.5. When in use, the height of the pressing plate 3.3 can be adjusted by adjusting the length of the telescopic adjustment rod 3.2, so that the pressing plate 3.3 can be pressed on the top of the sample. The other end of the pressing plate 3.3 away from the through hole is provided with a pressing portion 3.4, which extends to the side of the pressing plate, and the pressing portion 3.4 is tilted downward, and the pressing portion 3.4 is used to press on the top of the sample.

[0039] A second threaded column is provided below the contoured flexible clamping seat 4, and the contoured flexible clamping seat 4 can be fixedly connected to the positioning hole 2.2 of the angle adjustment plate 2 through the second threaded column. A plurality of extended elastic top columns 4.1 are provided on the side of the contoured flexible clamping seat 4, and the elastic top columns 4.1 can be pressed into the contoured flexible clamping seat 4 and have an outward resilience. The outer end surface of the elastic top column 4.1 is an arc surface, and the elastic top column 4.1 is used to abut against the curved surface of the sample, so as to adapt to the surface of the irregular sample.

[0040] The assembly structure of the elastic top column 4.1 adopts a conventional structure, for example: the elastic top column 4.1 is slidably arranged on the contoured flexible clamping seat 4, and an elastic member is arranged at the inner end of each elastic top column 4.1 in the contoured flexible clamping seat 4, so that the elastic top column 4.1 can be compressed inwards and rebound, and can form a certain clamping force for irregular samples. The elastic member can be a spring 4.2. Figure 4 As shown, the elastic top column 4.1 on the flexible clamping seat 4 can be further arranged into two groups, and the two groups of elastic top columns 4.1 are respectively installed on both sides of the flexible clamping seat 4, and the two ends of the flexible clamping seat 4 are respectively threadedly connected with locking bolts 4.3, and the corresponding group of elastic top columns 4.1 can be locked by the locking bolts 4.3.

[0041] The material of the bracket 1, angle adjustment plate 2, pressure plate 3.3, clamping base 3.1 and elastic top column 4.1 of this embodiment is POM, nylon, PVC or other non-metallic materials, which have high strength corrosion resistance and are not easy to deform, while achieving the purpose of insulating contact between the sample and the fixture.

[0042] When the irregular sample fixture of this embodiment is in use, the irregular sample can be clamped more stably on the angle adjustment plate 2 through the cooperation of the contoured flexible clamping seat 4 and the auxiliary clamping assembly 3. Then, by adjusting the flipping angle of the angle adjustment plate 2, the angle of the irregular sample during the test can be adjusted to meet the test angle specified by the standard.

[0043] The following lists the clamping methods of the irregular sample clamp of this embodiment for the motor 5, the spherical sample 6, and the curved tubular sample 7:

[0044] 1. If Figure 5 The figure shows a clamping method for the motor, where the bottom of the motor 5 is connected to the angle adjustment plate 2 by bolts to fix the bottom of the motor 5, and an auxiliary clamping assembly 3 is arranged around the motor 5. The top pressing portion 3.4 of the pressure plate 3.3 of the auxiliary clamping assembly 3 is pressed on the top of the motor 5 to fix the top of the motor 5, thereby finally achieving a stable fixation of the motor 5 on the angle adjustment plate 2. By flipping and adjusting the angle of the angle adjustment plate 2, the angle of the motor 5 during the test can be adjusted.

[0045] 2. If Figure 6The figure shows a clamping method for a spherical sample 6. The spherical sample 6 is placed on the middle part of the upper side of the angle adjustment plate 2. A contoured flexible clamping seat 4 is fixed on two opposite sides of the spherical sample 6. The contoured flexible clamping seat 4 can adapt to the shape of the spherical sample 6. Its elastic top column 4.1 is against the curved surface of the spherical sample 6 to form a stable fixation for the spherical sample 6. Auxiliary clamping assemblies 3 are fixed on the other two opposite sides of the spherical sample 6. The pressure plate 3.3 of the auxiliary clamping assembly 3 is pressed on the top of the spherical sample 6. Finally, the spherical sample 6 is stably fixed on the angle adjustment plate 2. By flipping and adjusting the angle of the angle adjustment plate 2, the angle of the spherical sample 6 during the test can be adjusted.

[0046] 3. If Figure 7 The figure shows a clamping method for a bent tubular sample 7. One end of the tubular sample 7 in the figure is bent. When clamping, a contoured flexible clamping seat 4 is fixed on both sides of the tubular sample 7. The contoured flexible clamping seat 4 can adapt to the arc surface of the tubular sample 7. Its elastic top column 4.1 is pressed against the arc surface of the tubular sample 7, thereby fixing the main part of the tubular sample 7. A clamping base 3.1 is fixed on both sides of the bent portion 7.1 of the tubular sample. The clamping portion 3.10 of the clamping base 3.1 or the side of the telescopic adjustment rod is pressed against the bent portion 7.1 of the tubular sample to fix the bent portion 7.1 of the tubular sample. Finally, the bent tubular sample 7 is stably fixed on the angle adjustment plate 2. By flipping and adjusting the angle of the angle adjustment plate 2, the angle of the tubular sample 7 during the test can be adjusted.

[0047] The above embodiments of the present invention are not intended to limit the protection scope of the present invention, and the implementation modes of the present invention are not limited thereto. All other modifications, replacements or changes made to the above structures of the present invention based on the above contents of the present invention, in accordance with common technical knowledge and customary means in the art, without departing from the above basic technical ideas of the present invention, should fall within the protection scope of the present invention.

Claims

1. An irregular sample fixture for salt spray test, characterized in that: The cam is provided with a plurality of positioning holes, and the auxiliary clamping assembly comprises a clamping base, a telescopic adjustment rod and a pressing plate. The contoured flexible clamping base and the clamping base can be connected to the angle adjustment plate through the positioning holes. The side surface of the contoured flexible clamping base is provided with a plurality of extended elastic top columns, the elastic top columns can be pressed into the contoured flexible clamping base and have an outward resilience, the elastic top columns are used to press against the curved surface of the sample, one end of the clamping base is provided with a clamping portion for pressing against the side surface of the sample, the telescopic adjustment rod is vertically connected to the clamping base, the pressing plate is connected to the upper end of the telescopic adjustment rod, one end of the pressing plate is provided with a pressing portion, the pressing portion extends to the side of the pressing plate, and the pressing portion is used to press against the top of the sample.

2. The irregular sample fixture for salt spray test according to claim 1, characterized in that: The pressing portion is arranged to be inclined downward.

3. The irregular sample fixture for salt spray test according to claim 1, characterized in that: The clamping portion is provided with an arc surface for abutting against the side surface of the sample.

4. The irregular sample fixture for salt spray test according to claim 1, characterized in that: The bracket includes a support plate and pillars vertically fixed on both sides of the support plate, an axial hole is provided at the upper end of the pillar, and a rotating shaft is respectively provided on both sides of the angle adjustment plate. The rotating shaft is inserted into the axial hole, and the fit between the rotating shaft and the axial hole is a tight fit.

5. The irregular sample fixture for salt spray test according to claim 1, characterized in that: The positioning holes include round holes and elongated holes.

6. The irregular sample fixture for salt spray test according to claim 1, characterized in that: The clamping base is provided with a waist hole, and a connecting bolt is passed through the waist hole. The connecting bolt is used to cooperate and pass through the positioning hole, and a fixing nut is connected to the connecting bolt to achieve fixation.

7. The irregular sample fixture for salt spray test according to claim 1, characterized in that: A first threaded column is provided at the lower end of the telescopic adjustment rod, and a threaded hole is provided on the clamping base. The first threaded column is used to be matched and connected in the threaded hole.

8. The irregular sample fixture for salt spray test according to claim 1, characterized in that: A connecting portion is provided at the upper end of the telescopic adjustment rod, and an external thread is provided on the connecting portion. Two clamping nuts are connected to the connecting portion. A through hole is provided at a position of the pressure plate away from the top pressure portion. The pressure plate passes through the through hole on the connecting portion and is clamped between the two clamping nuts.

9. The irregular sample fixture for salt spray test according to claim 1, characterized in that: The support, the angle adjustment plate, the pressing plate, the clamping base and the elastic top column are made of POM, nylon or PVC.

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