A high-precision detection device for the wall thickness of a ball-milled cast iron pipe

Abstract

The application provides a high-precision detection equipment for the wall thickness of a ball mill cast iron pipe, which comprises a bottom plate, the top of which is provided with a first ultrasonic detection head, and the bottom of the first ultrasonic detection head is oppositely provided with a second ultrasonic detection head, and the second ultrasonic detection head and the first ultrasonic detection head are clamped on the inner and outer sides of the wall of the ball mill cast iron pipe through a connecting assembly. The wall of the ball mill cast iron pipe is located in the space between the first ultrasonic detection head and the second ultrasonic detection head, at this time, the first ultrasonic detection head is located on the outer wall of the ball mill cast iron pipe to detect the wall thickness of the ball mill cast iron pipe, and the second ultrasonic detection head is located on the inner wall of the ball mill cast iron pipe to detect the wall thickness of the ball mill cast iron pipe. The average value of the multiple values measured by the inner and outer walls of the ball mill cast iron pipe is calculated, and the wall thickness of the ball mill cast iron pipe is obtained. The equipment detects the inner and outer walls of the ball mill cast iron pipe, compares the detection values and calculates the average value, and the detection precision is high.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of detection equipment, and in particular to a high-precision detection equipment for wall thickness of ball mill cast iron pipe. BACKGROUND

[0002] The ductile cast iron pipe refers to a pipe material made of 18 or more cast iron after adding spherulitic agent and then being centrifugally cast by a centrifugal ductile cast iron machine, and is mainly used for conveying tap water and is an ideal material for tap water pipes.

[0003] After the production of the ductile cast iron pipe is completed, the pipe needs to be sampled and tested, that is, the wall thickness of the pipe is detected by using an ultrasonic probe head to determine whether the pipe is qualified. Before the ultrasonic probe head detects the ductile cast iron pipe, a coupling agent needs to be brushed on the position to be detected. The purpose of using the coupling agent is to eliminate the air between the ultrasonic probe head and the ductile cast iron pipe, so that the ultrasonic wave can effectively penetrate into the pipe to achieve the detection purpose. The coupling agent needs to be used in an appropriate amount and evenly applied to the position to be detected.

[0004] The prior art has the following disadvantages: the existing detection equipment only detects the wall thickness of the ball mill cast iron pipe by using a single ultrasonic probe head. When the single ultrasonic probe head detects, there is no comparison data, and the detection personnel can only calculate the average value of the wall thickness of the ball mill cast iron pipe by using multiple detection data of the single ultrasonic probe head, and the detection error is large. SUMMARY

[0005] The present application provides a high-precision detection equipment for wall thickness of ball mill cast iron pipe.

[0006] The present application solves the above technical problems by the following technical means: a high-precision detection equipment for wall thickness of ball mill cast iron pipe, comprising a bottom plate, a first ultrasonic probe head is arranged on the top of the bottom plate, and a second ultrasonic probe head is arranged opposite to the first ultrasonic probe head at the bottom of the first ultrasonic probe head, and the second ultrasonic probe head and the first ultrasonic probe head are clamped on the inner and outer sides of the wall of the ball mill cast iron pipe through a connecting assembly.

[0007] Preferably, a support frame is fixedly arranged on one end of the top of the bottom plate, an electric push rod is fixedly arranged on the top of the support frame, and the first ultrasonic probe head is in transmission connection with the electric push rod through an extension shaft. The electric push rod is used for adjusting the height position of the second ultrasonic probe head and the first ultrasonic probe head.

[0008] Preferably, the top of the bottom plate away from the side of the support frame is also provided with a support, the support comprises a support plate and two groups of supporting wheels, the support plate is fixedly connected with the bottom plate, the two groups of supporting wheels are oppositely arranged, and the supporting wheels are movably connected with the support plate through wheel shafts, and when the ball mill cast iron pipe is placed, the ball mill cast iron pipe is located between the two groups of supporting wheels, and the supporting wheels assist in supporting the ball mill cast iron pipe;

[0009] Preferably, the first ultrasonic probe and the second ultrasonic probe are both measured five times, and then:

[0010] The first ultrasonic probe detects five values, which are set as X1, X2, X3, X4 and X5, the second ultrasonic probe detects five values, which are set as Y1, Y2, Y3, Y4 and Y5, and the average thickness of the ball mill cast iron pipe is (X1+X2+X3+X4+X5+Y1+Y2+Y3+Y4+Y5) / 5 / 2.

[0011] For example, X1=5.13mm, X2=5.12mm, X3=5.14mm, X4=5.11mm, X5=5.13mm, Y1=5.10mm, Y2=5.12mm, Y3=5.11mm, Y4=5.15mm, Y5=5.14mm, and the average thickness of the ball mill cast iron pipe is (X1+X2+X3+X4+X5+Y1+Y2+Y3+Y4+Y5) / 5 / 2=5.13mm.

[0012] Preferably, in actual use, in order to further improve the detection accuracy of the detection equipment, a smearing assembly is further arranged on one side of the first ultrasonic probe, and the smearing assembly specifically comprises:

[0013] Preferably, the smearing assembly comprises a sponge wheel, a wheel cover, a connecting pipe and a soft rubber guide pipe.

[0014] The sponge wheel is provided with two sponge wheels, and the sponge wheels are in contact with each other, the wheel cover is arranged on the outer side of the sponge wheel, the sponge wheel and the wheel cover are movably connected through the wheel shaft, the connecting pipe is fixedly arranged at the end of the wheel cover, the connecting pipe and the wheel cover are in conductive connection, and the two wheel covers are fixedly connected with the first ultrasonic probe and the second ultrasonic probe through the connecting pipe.

[0015] Preferably, a soft rubber guide pipe is arranged in conductive connection on the outer side of the connecting pipe, a booster pump is fixedly arranged in the middle of the soft rubber guide pipe, a pipe is arranged on one side of the booster pump, and the booster pump is in conductive connection with the coupling agent supply equipment.

[0016] Preferably, when the ball mill cast iron pipe moves, the two sponge wheels are in contact with the inner and outer walls of the ball mill cast iron pipe respectively, the coupling agent is extracted by the booster pump, transmitted to the connecting pipe through the soft rubber pipe, and then transmitted to the sponge wheel, at this time, the ball mill cast iron pipe moves, and the sponge wheel rolls to uniformly apply the coupling agent on the inner and outer walls of the ball mill cast iron pipe, so that the first ultrasonic probe and the second ultrasonic probe are free of air between the wall of the ball mill cast iron pipe, and the detection accuracy of the detection equipment can be further improved.

[0017] Preferably, the connecting assembly comprises a first support, a second support, a slide rod and a first spring, wherein the first support and the second support are fixedly connected with the first ultrasonic probe and the second ultrasonic probe respectively, the top end of the slide rod is fixedly connected with the first support, the slide rod is slidingly connected with the second support, the first spring is sleeved outside the slide rod, and the two ends of the first spring are fixedly connected with the first support and the second support respectively, according to the wall thickness of the ball mill cast iron pipe, the second ultrasonic probe can move at the bottom of the first ultrasonic probe through the slide rod, and after the second ultrasonic probe and the first ultrasonic probe are clamped on the inner and outer walls of the ball mill cast iron pipe, the first spring pulls the second ultrasonic probe and the first ultrasonic probe to tightly adhere to the inner and outer walls of the ball mill cast iron pipe, so that the stability is good.

[0018] Preferably, one end of the first support and the second support is fixedly provided with a square sleeve and a sliding plate respectively, the sliding plate is movably embedded in the inside of the square sleeve, the inside of the square sleeve is provided with a second spring, and the two ends of the second spring are fixedly connected with the sliding plate and the square sleeve respectively, and a scale line is further arranged on the side surface of the sliding plate, and in the normal state, the bottom end of the square sleeve corresponds to the zero scale of the scale line.

[0019] Preferably, after the second ultrasonic probe and the first ultrasonic probe are movably clamped on the inner and outer walls of the ball mill cast iron pipe, the detection personnel can observe the position of the square sleeve bottom edge on the scale line to obtain a numerical value, which is used as a reference value, and when the second ultrasonic probe and the first ultrasonic probe are damaged, the reference value can be used as the pipe wall thickness value.

[0020] The beneficial effects of the present application are as follows:

[0021] The present application supports the ball mill cast iron pipe by the supporting piece, manually pushes the ball mill cast iron pipe to move, so that the pipe wall of the ball mill cast iron pipe is located in the gap between the first ultrasonic probe and the second ultrasonic probe, at this time, the first ultrasonic probe is located on the outer wall of the ball mill cast iron pipe to detect the wall thickness of the ball mill cast iron pipe, and the second ultrasonic probe is located on the inner wall of the ball mill cast iron pipe to detect the wall thickness of the ball mill cast iron pipe, the average value of multiple measured values of the inner and outer walls of the ball mill cast iron pipe is calculated, and the wall thickness of the ball mill cast iron pipe is obtained, the equipment detects the inner and outer walls of the ball mill cast iron pipe, compares the detection values and calculates the average value, and the detection accuracy is high. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a longitudinal sectional view of the present application;

[0023] Figure 2 is a use state diagram of the present application;

[0024] Figure 3 is a structural schematic diagram of the connecting assembly of the present application;

[0025] Figure 4 is a structural schematic diagram of the telescopic member of the present application.

[0026] In the figure: 1, bottom plate; 2, support frame; 3, first ultrasonic probe head; 4, second ultrasonic probe head; 5, connecting assembly; 51, first support; 52, second support; 53, sliding rod; 54, first spring; 55, square sleeve; 56, sliding plate; 57, second spring; 58, scale line; 6, smearing assembly; 61, sponge wheel; 62, wheel cover; 63, connecting pipe; 64, soft rubber catheter; 7, electric push rod; 8, supporting member; 81, support plate; 82, supporting wheel. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are some of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0028] It should be noted that when an element is referred to as being “fixed” to another element, it can be directly on the other element or there can be an intervening element. When an element is referred to as being “connected” to another element, it can be directly connected to the other element or intervening elements can be present.

[0029] Embodiment 1

[0030] Referring to Figure 1 The present embodiment describes a high-precision detection device for the wall thickness of a ball mill cast iron pipe, which comprises a bottom plate 1, and a first ultrasonic probe head 3 is arranged on the top of the bottom plate 1. Different from the prior art, a second ultrasonic probe head 4 is arranged opposite to the bottom of the first ultrasonic probe head 3, and the second ultrasonic probe head 4 and the first ultrasonic probe head 3 are clamped on the inner and outer sides of the wall of the ball mill cast iron pipe through a connecting assembly 5.

[0031] Referring to Figure 1As shown, the support frame 2 is fixedly arranged on one end of the bottom plate 1, the top of the support frame 2 is fixedly arranged with the electric push rod 7, the first ultrasonic probe head 3 is drivingly connected with the electric push rod 7 through the telescopic shaft, the electric push rod 7 is arranged to support the support frame 2, and the electric push rod 7 is used to adjust the height position of the second ultrasonic probe head 4 and the first ultrasonic probe head 3.

[0032] As shown in the drawings, Figure 2 As shown, the support frame 2 is fixedly arranged on one end of the bottom plate 1, the top of the support frame 2 is fixedly arranged with the electric push rod 7, the first ultrasonic probe head 3 is drivingly connected with the electric push rod 7 through the telescopic shaft, the electric push rod 7 is arranged to support the support frame 2, and the electric push rod 7 is used to adjust the height position of the second ultrasonic probe head 4 and the first ultrasonic probe head 3.

[0033] As shown in the drawings, Figure 2 As shown, the support frame 2 is fixedly arranged on one end of the bottom plate 1, the top of the support frame 2 is fixedly arranged with the electric push rod 7, the first ultrasonic probe head 3 is drivingly connected with the electric push rod 7 through the telescopic shaft, the electric push rod 7 is arranged to support the support frame 2, and the electric push rod 7 is used to adjust the height position of the second ultrasonic probe head 4 and the first ultrasonic probe head 3.

[0034] As shown in the drawings,

[0035] As shown in the drawings,

[0036] The first ultrasonic probe head 3 detects five times, and the five times are set as X1, X2, X3, X4, and X5, the second ultrasonic probe head 4 detects five times, and the five times are set as Y1, Y2, Y3, Y4, and Y5, and the average value of the ball mill cast iron pipe wall thickness is (X1+X2+X3+X4+X5+Y1+Y2+Y3+Y4+Y5) / 5 / 2.

[0037] For example, X1=5.13mm, X2=5.12mm, X3=5.14mm, X4=5.11mm, X5=5.13mm, Y1=5.10mm, Y2=5.12mm, Y3=5.11mm, Y4=5.15mm, Y5=5.14mm, then the average value of the ball mill cast iron pipe wall thickness is (X1+X2+X3+X4+X5+Y1+Y2+Y3+Y4+Y5) / 5 / 2=5.13mm.

[0038] Example 2

[0039] As shown in Figure 1 The embodiment described a kind of high-precision detection equipment for ball mill cast iron pipe wall thickness, including bottom plate 1, the top of the bottom plate 1 is provided with first ultrasonic probe head 3, unlike prior art, the bottom of the first ultrasonic probe head 3 is oppositely provided with second ultrasonic probe head 4, and second ultrasonic probe head 4 and first ultrasonic probe head 3 are clamped in the inside and outside of ball mill cast iron pipe wall by connecting assembly 5;

[0040] As shown in Figure 1 As shown in, support frame 2 is fixedly arranged on the top of one end of bottom plate 1, the top of the support frame 2 is fixedly provided with electric push rod 7, and first ultrasonic probe head 3 is drivenly connected with electric push rod 7 through telescopic shaft, electric push rod 7 is used for adjusting the height position of second ultrasonic probe head 4 and first ultrasonic probe head 3 by being supported by the support frame 2 arranged;

[0041] As shown in Figure 2 As shown in, still provided with supporting piece 8 on the top of bottom plate 1 away from support frame 2 side, supporting piece 8 includes support plate 81 and two groups of supporting wheels 82, and support plate 81 is fixedly connected with bottom plate 1, two groups of supporting wheels 82 are oppositely arranged, and supporting wheel 82 is movably connected with support plate 81 through wheel shaft, ball mill cast iron pipe is placed between two groups of supporting wheels 82, and supporting wheel 82 assists supporting ball mill cast iron pipe;

[0042] As shown in Figure 2 As shown in, when using, ball mill cast iron pipe is supported by supporting piece 8, and ball mill cast iron pipe is manually pushed to move, so that the pipe wall of ball mill cast iron pipe is located in the space between first ultrasonic probe head 3 and second ultrasonic probe head 4, at this time, first ultrasonic probe head 3 is located on the outer wall of ball mill cast iron pipe to detect the wall thickness of ball mill cast iron pipe, and second ultrasonic probe head 4 is located on the inner wall of ball mill cast iron pipe to detect the wall thickness of ball mill cast iron pipe, the average value of multiple values measured by the inner wall and the outer wall of ball mill cast iron pipe is calculated, so that the wall thickness of ball mill cast iron pipe can be obtained, the equipment detects the inner wall and the outer wall of ball mill cast iron pipe, and the average value is obtained after comparing the detection values, so that the detection precision is high;

[0043] As described above, the average value calculation formula of the wall thickness of ball mill cast iron pipe is:

[0044] Supposing that the measurement times of first ultrasonic probe head 3 and second ultrasonic probe head 4 are five times, then:

[0045] The five detection values of first ultrasonic probe head 3 are respectively set as X1, X2, X3, X4, X5, the five detection values of second ultrasonic probe head 4 are respectively set as Y1, Y2, Y3, Y4, Y5, and the average value of the wall thickness of ball mill cast iron pipe is: (X1+X2+X3+X4+X5+Y1+Y2+Y3+Y4+Y5) / 5 / 2;

[0046] For example: X1 = 5.13mm, X2 = 5.12mm, X3 = 5.14mm, X4 = 5.11mm, X5 = 5.13mm, Y1 = 5.10mm, Y2 = 5.12mm, Y3 = 5.11mm, Y4 = 5.15mm, Y5 = 5.14mm, the average wall thickness of the ball mill cast iron pipe is: (X1 + X2 + X3 + X4 + X5 + Y1 + Y2 + Y3 + Y4 + Y5) / 5 / 2 = 5.13mm;

[0047] In actual use, in order to further improve the detection accuracy of the detection equipment, a smearing assembly 6 is further arranged on one side of the first ultrasonic probe head 3, which is specifically as follows:

[0048] Please refer to Figure 1 As shown in the figure, the smearing assembly 6 comprises sponge wheels 61, wheel covers 62, connecting pipes 63 and soft rubber catheters 64;

[0049] Among them, the sponge wheel 61 is arranged as two, and the sponge wheels 61 are in contact with each other, the wheel cover 62 is arranged outside the sponge wheel 61, and the sponge wheel 61 and the wheel cover 62 are movably connected through the wheel shaft, the connecting pipe 63 is fixedly arranged at the end of the wheel cover 62, and the connecting pipe 63 is in conductive connection with the wheel cover 62, and the two wheel covers 62 are respectively fixedly connected with the first ultrasonic probe head 3 and the second ultrasonic probe head 4 through the connecting pipe 63;

[0050] The soft rubber catheter 64 is arranged in conductive connection outside the connecting pipe 63, a booster pump is fixedly arranged in the middle of the soft rubber catheter 64, a through pipe is arranged on one side of the booster pump, and the booster pump is in conductive connection with the coupling agent supply device;

[0051] When the ball mill cast iron pipe moves, the two sponge wheels 61 respectively contact with the inner and outer walls of the ball mill cast iron pipe, the booster pump draws the coupling agent into the connecting pipe 63 through the soft rubber catheter 64, and then the coupling agent is transmitted to the sponge wheel 61 through the connecting pipe 63, at this time, the ball mill cast iron pipe moves, the sponge wheel 61 rolls to uniformly smear the coupling agent on the inner and outer walls of the ball mill cast iron pipe, so that the first ultrasonic probe head 3 and the second ultrasonic probe head 4 are free of air between the first ultrasonic probe head 3 and the second ultrasonic probe head 4 and the wall of the ball mill cast iron pipe, which can further improve the detection accuracy of the detection equipment.

[0052] Example 3

[0053] Please refer to Figure 1 As shown in the figure, the smearing assembly 6 comprises sponge wheels 61, wheel covers 62, connecting pipes 63 and soft rubber catheters 64;

[0049] Among them, the sponge wheel 61 is arranged as two, and the sponge wheels 61 are in contact with each other, the wheel cover 62 is arranged outside the sponge wheel 61, and the sponge wheel 61 and the wheel cover 62 are movably connected through the wheel shaft, the connecting pipe 63 is fixedly arranged at the end of the wheel cover 62, and the connecting pipe 63 is in conductive connection with the wheel cover 62, and the two wheel covers 62 are respectively fixedly connected with the first ultrasonic probe head 3 and the second ultrasonic probe head 4 through the connecting pipe 63;

[0050] The soft rubber catheter 64 is arranged in conductive connection outside the connecting pipe 63, a booster pump is fixedly arranged in the middle of the soft rubber catheter 64, a through pipe is arranged on one side of the booster pump, and the booster pump is in conductive connection with the coupling agent supply device;

[0051] When the ball mill cast iron pipe moves, the two sponge wheels 61 respectively contact with the inner and outer walls of the ball mill cast iron pipe, the booster pump draws the coupling agent into the connecting pipe 63 through the soft rubber catheter 64, and then the coupling agent is transmitted to the sponge wheel 61 through the connecting pipe 63, at this time, the ball mill cast iron pipe moves, the sponge wheel 61 rolls to uniformly smear the coupling agent on the inner and outer walls of the ball mill cast iron pipe, so that the first ultrasonic probe head 3 and the second ultrasonic probe head 4 are free of air between the first ultrasonic probe head 3 and the second ultrasonic probe head 4 and the wall of the ball mill cast iron pipe, which can further improve the detection accuracy of the detection equipment.

[0052] Example 3

[0053] Please refer to Figure 1 As shown in the figure, the smearing assembly 6 comprises sponge wheels 61, wheel covers 62, connecting pipes 63 and soft rubber catheters 64;

[0049] Among them, the sponge wheel 61 is arranged as two, and the sponge wheels 61 are in contact with each other, the wheel cover 62 is arranged outside the sponge wheel 61, and the sponge wheel 61 and the wheel cover 62 are movably connected through the wheel shaft, the connecting pipe 63 is fixedly arranged at the end of the wheel cover 62, and the connecting pipe 63 is in conductive connection with the wheel cover 62, and the two wheel covers 62 are respectively fixedly connected with the first ultrasonic probe head 3 and the second ultrasonic probe head 4 through the connecting pipe 63;

[0050] The soft rubber catheter 64 is arranged in conductive connection outside the connecting pipe 63, a booster pump is fixedly arranged in the middle of the soft rubber catheter 64, a through pipe is arranged on one side of the booster pump, and the booster pump is in conductive connection with the coupling agent supply device;

[0051] When the ball mill cast iron pipe moves, the two sponge wheels 61 respectively contact with the inner and outer walls of the ball mill cast iron pipe, the booster pump draws the coupling agent into the connecting pipe 63 through the soft rubber catheter 64, and then the coupling agent is transmitted to the sponge wheel 61 through the connecting pipe 63, at this time, the ball mill cast iron pipe moves, the sponge wheel 61 rolls to uniformly smear the coupling agent on the inner and outer walls of the ball mill cast iron pipe, so that the first ultrasonic probe head 3 and the second ultrasonic probe head 4 are free of air between the first ultrasonic probe head 3 and the second ultrasonic probe head 4 and the wall of the ball mill cast iron pipe, which can further improve the detection accuracy of the detection equipment.

[0054] As shown in Figure 1 The support frame 2 is fixedly arranged on one end of the bottom plate 1, and the electric push rod 7 is fixedly arranged on the top of the support frame 2. The first ultrasonic probe head 3 is in transmission connection with the electric push rod 7 through the telescopic shaft. The electric push rod 7 is arranged to support the second ultrasonic probe head 4 and the first ultrasonic probe head 3.

[0055] As shown in Figure 2 The support frame 2 is fixedly arranged on one end of the bottom plate 1, and the electric push rod 7 is fixedly arranged on the top of the support frame 2. The first ultrasonic probe head 3 is in transmission connection with the electric push rod 7 through the telescopic shaft. The electric push rod 7 is arranged to support the second ultrasonic probe head 4 and the first ultrasonic probe head 3.

[0056] As shown in Figure 2 In use, the ball mill cast iron pipe is supported by the support 8, and the ball mill cast iron pipe is manually pushed to move, so that the pipe wall of the ball mill cast iron pipe is located in the space between the first ultrasonic probe head 3 and the second ultrasonic probe head 4. At this time, the first ultrasonic probe head 3 detects the wall thickness of the ball mill cast iron pipe outside the wall, and the second ultrasonic probe head 4 detects the wall thickness of the ball mill cast iron pipe inside the wall. The average value of the multiple values measured by the inside and outside walls of the ball mill cast iron pipe is obtained, that is, the wall thickness of the ball mill cast iron pipe. The device detects the inside and outside walls of the ball mill cast iron pipe, and obtains the average value by comparing the detection values, so that the detection accuracy is high.

[0057] As described above, the average value calculation formula of the wall thickness of the ball mill cast iron pipe is:

[0058] Supposing that the first ultrasonic probe head 3 and the second ultrasonic probe head 4 are measured five times, then:

[0059] The first ultrasonic probe head 3 detects five values, which are set as X1, X2, X3, X4 and X5. The second ultrasonic probe head 4 detects five values, which are set as Y1, Y2, Y3, Y4 and Y5. The average value of the wall thickness of the ball mill cast iron pipe is (X1+X2+X3+X4+X5+Y1+Y2+Y3+Y4+Y5) / 5 / 2.

[0060] For example: X1 = 5.13mm, X2 = 5.12mm, X3 = 5.14mm, X4 = 5.11mm, X5 = 5.13mm, Y1 = 5.10mm, Y2 = 5.12mm, Y3 = 5.11mm, Y4 = 5.15mm, Y5 = 5.14mm, the average wall thickness of the ball mill cast iron pipe is: (X1+X2+X3+X4+X5+Y1+Y2+Y3+Y4+Y5) / 5 / 2 = 5.13mm;

[0061] In actual use, in order to further improve the detection accuracy of the detection equipment, we also set a smearing assembly 6 on one side of the first ultrasonic probe head 3, as follows:

[0062] Please refer to Figure 1 As shown, the smearing assembly 6 includes sponge wheels 61, wheel covers 62, connecting pipes 63 and soft rubber catheters 64;

[0063] Among them, the sponge wheel 61 is provided with two, and the sponge wheels 61 are in contact with each other, the wheel cover 62 is arranged outside the sponge wheel 61, and the sponge wheel 61 and the wheel cover 62 are movably connected through the wheel shaft, the connecting pipe 63 is fixedly arranged at the end of the wheel cover 62, and the connecting pipe 63 is in conductive connection with the wheel cover 62, and the two wheel covers 62 are respectively fixedly connected with the first ultrasonic probe head 3 and the second ultrasonic probe head 4 through the connecting pipe 63;

[0064] The soft rubber catheter 64 is arranged in conductive connection outside the connecting pipe 63, the middle part of the soft rubber catheter 64 is fixedly provided with a booster pump, one side of the booster pump is provided with a pipe, and the booster pump is in conductive connection with the coupling agent supply device;

[0065] When the ball mill cast iron pipe moves, the two sponge wheels 61 are in contact with the inner and outer walls of the ball mill cast iron pipe, the booster pump draws the coupling agent into the connecting pipe 63 through the pipe and the soft rubber catheter 64, and then transmits it to the sponge wheel 61 through the connecting pipe 63, at this time, the ball mill cast iron pipe moves, the sponge wheel 61 rolls and uniformly smears the coupling agent on the inner and outer walls of the ball mill cast iron pipe, so that the first ultrasonic probe head 3 and the second ultrasonic probe head 4 are free of air between the wall of the ball mill cast iron pipe, which can further improve the detection accuracy of the detection equipment;

[0066] Considering that the first ultrasonic probe head 3 and the second ultrasonic probe head 4 are electronic detection, if the first ultrasonic probe head 3 and the second ultrasonic probe head 4 are damaged, the detection cannot continue, therefore, we optimize the structure of the connecting assembly 5 as follows:

[0067] Please refer to Figure 3As shown, the connecting assembly 5 comprises a first support 51, a second support 52, a slide rod 53 and a first spring 54, wherein the first support 51 and the second support 52 are fixedly connected with the first ultrasonic probe head 3 and the second ultrasonic probe head 4 respectively, the top end of the slide rod 53 is fixedly connected with the first support 51, the slide rod 53 is slidingly connected with the second support 52, the first spring 54 is sleeved outside the slide rod 53, and the two ends of the first spring 54 are fixedly connected with the first support 51 and the second support 52 respectively. According to the wall thickness of the ball mill cast iron pipe, the second ultrasonic probe head 4 can move at the bottom of the first ultrasonic probe head 3 through the slide rod 53, and after the second ultrasonic probe head 4 and the first ultrasonic probe head 3 are clamped on the inner and outer walls of the ball mill cast iron pipe, the first spring 54 pulls the second ultrasonic probe head 4 and the first ultrasonic probe head 3 to tightly adhere to the inner and outer walls of the ball mill cast iron pipe, so that the stability is good.

[0068] And one end of the first support 51 and the second support 52 is fixedly provided with a square sleeve 55 and a sliding plate 56 respectively, and the sliding plate 56 is movably embedded in the inside of the square sleeve 55. The inside of the square sleeve 55 is provided with a second spring 57, and the two ends of the second spring 57 are fixedly connected with the sliding plate 56 and the square sleeve 55 respectively. The side surface of the sliding plate 56 is further provided with a scale line 58, and under normal conditions, the bottom end of the square sleeve 55 corresponds to the zero scale of the scale line 58.

[0069] When the second ultrasonic probe head 4 and the first ultrasonic probe head 3 are movably clamped on the inner and outer walls of the ball mill cast iron pipe, the detection personnel can observe the position of the square sleeve 55 bottom edge on the scale line 58 to obtain a numerical value, which is used as a reference value, and when the second ultrasonic probe head 4 and the first ultrasonic probe head 3 are damaged, the reference value can be used as the pipe wall thickness value.

[0070] It should be noted that in this text, if there are relationship terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between them. Moreover, the terms "include", "contain" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment. Without more limitation, the element defined by the statement "including a…" does not exclude the presence of other identical elements in the process, method, article or equipment including the element.

[0071] The above examples are only used to illustrate the technical solutions of the present application, and are not intended to limit the present application; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that the technical solutions recorded in the foregoing examples can be modified, or some technical features can be replaced by equivalent features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A high-precision detection device for the wall thickness of a ball-milled cast iron pipe, comprising a base plate (1), the top of which is provided with a first ultrasonic detection head (3), characterized in that: The second ultrasonic detection head (4) is oppositely arranged at the bottom of the first ultrasonic detection head (3), and the second ultrasonic detection head (4) and the first ultrasonic detection head (3) are clamped on the inner and outer sides of the wall of the ball mill cast iron pipe through the connecting assembly (5); the first ultrasonic detection head (3) is further provided with a smearing assembly (6), the smearing assembly (6) comprises sponge wheels (61), wheel covers (62), connecting pipes (63) and soft rubber guide pipes (64), the sponge wheels (61) are arranged in two and are in contact with each other, the wheel covers (62) are arranged outside the sponge wheels (61), the sponge wheels (61) and the wheel covers (62) are movably connected through wheel shafts, the connecting pipes (63) are fixedly arranged at the ends of the wheel covers (62) and are in conductive connection with the wheel covers (62), and the two wheel covers (62) are fixedly connected with the first ultrasonic detection head (3) and the second ultrasonic detection head (4) through the connecting pipes (63). The connecting assembly (5) comprises first supports (51), second supports (52), slide rods (53) and first springs (54), wherein the first supports (51) and the second supports (52) are fixedly connected with the first ultrasonic detection head (3) and the second ultrasonic detection head (4) respectively, the top end of the slide rod (53) is fixedly connected with the first support (51), the slide rod (53) is slidably connected with the second support (52), the first spring (54) is sleeved outside the slide rod (53), and the two ends of the first spring (54) are fixedly connected with the first support (51) and the second support (52) respectively. One end of each of the first support (51) and the second support (52) is fixedly provided with a square sleeve (55) and a sliding plate (56) respectively, the sliding plate (56) is movably embedded in the inside of the square sleeve (55), the inside of the square sleeve (55) is provided with a second spring (57), and the two ends of the second spring (57) are fixedly connected with the sliding plate (56) and the square sleeve (55) respectively.

2. A high-precision detection device for the wall thickness of a ball-milled cast iron pipe according to claim 1, characterized in that: One end of the bottom plate (1) is fixedly provided with a support frame (2) on the top, the top of the support frame (2) is fixedly provided with an electric push rod (7), and the first ultrasonic detection head (3) is drivingly connected with the electric push rod (7) through a telescopic shaft.

3. A high-precision detection device for the wall thickness of a ball-milled cast iron pipe according to claim 2, characterized in that: The bottom plate (1) is further provided with a supporting piece (8) on the side away from the support frame (2) on the top, the supporting piece (8) comprises a supporting plate (81) and two groups of supporting wheels (82), and the supporting plate (81) is fixedly connected with the bottom plate (1).

4. A high-precision detection device for the wall thickness of a ball-milled cast iron pipe according to claim 3, characterized in that: The two groups of supporting wheels (82) are oppositely arranged, and the supporting wheels (82) are movably connected with the supporting plate (81) through wheel shafts.

5. A high-precision detection device for the wall thickness of a ball-milled cast iron pipe according to claim 4, characterized in that: The average value calculation formula of the wall thickness of the ball mill cast iron pipe is that the five detection values of the first ultrasonic detection head (3) are respectively set as X1, X2, X3, X4 and X5, the five detection values of the second ultrasonic detection head (4) are respectively set as Y1, Y2, Y3, Y4 and Y5, and the average value of the wall thickness of the ball mill cast iron pipe is (X1+X2+X3+X4+X5+Y1+Y2+Y3+Y4+Y5) / 5 / 2.

6. A high-precision detection device for the wall thickness of a ball-milled cast iron pipe according to claim 1, characterized in that: The outer side of the connecting pipe (63) is provided with a soft rubber guide pipe (64), the middle part of the soft rubber guide pipe (64) is fixedly provided with a booster pump, one side of the booster pump is provided with a through pipe, and the booster pump is in communication connection with the coupling agent supply equipment.

7. A high-precision detection device for the wall thickness of a ball-milled cast iron pipe according to claim 1, characterized in that: The side of the sliding plate (56) is further provided with a scale line (58), and the bottom end of the square sleeve (55) corresponds to the zero scale of the scale line (58).

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