CN212228412U

CN212228412U - Small punch test surface sampling device

Info

Publication number: CN212228412U
Application number: CN202020752803.3U
Authority: CN
Inventors: 张广兴
Original assignee: Guodian Boiler And Pressure Vessel Inspection Co ltd
Current assignee: Guoneng boiler and Pressure Vessel Inspection Co.,Ltd.
Priority date: 2020-05-09
Filing date: 2020-05-09
Publication date: 2020-12-25
Anticipated expiration: 2030-05-09

Abstract

The utility model discloses a small punch test surface sampling device, which comprises a shell, wherein the top of the shell is provided with a screw rod, a lifting rod is arranged in the shell, the bottom of the screw rod is connected with the lifting rod, the bottom of the lifting rod is provided with a support rod, the support rod is provided with a bracket, the bracket is provided with a motor, and the driving end of the motor is provided with a sampling die end head; a rotating rod is vertically arranged on the end head of the sampling mold, a tool bit hand wheel is arranged at the top of the rotating rod, a gear is arranged at the bottom of the rotating rod, and a tool bit is connected to the gear in a transmission mode. The utility model discloses can be according to the actual conditions of material, need not to get the sample of full thickness direction, can get the cylinder sample of certain thickness according to experimental design, get a plurality of samples at the thickness direction through wire-electrode cutting after the sample takes off and study, not only satisfy SP test's requirement, do microcosmic metallography, multiple experiments such as electron microscope to the performance of comprehensive judgement material, evaluation equipment's life-span.

Description

Small punch test surface sampling device

Technical Field

The utility model relates to a pipeline sample field particularly, relates to a little jumper bar test surface sampling device.

Background

Many devices in the industries of electric power, petrifaction, metallurgy and the like are in service for a long time in environments of high temperature, high pressure, strong corrosion and the like, materials can be degraded to different degrees, and safety accidents can be caused seriously. In order to ensure that each component can stably run for a long time as required, each component needs to be periodically checked during service. Conventional non-destructive testing (also called non-destructive testing) can detect intrinsic or surface defects without damaging the structural integrity of equipment or components, and cannot obtain the mechanical properties of the material, such as tensile strength, yield strength, fracture toughness and the like. The mechanical properties of the material can be obtained by conventional tensile test, impact test, fracture toughness test and the like, but a large amount of test materials are required and belong to destructive sampling tests. Based on the above disadvantages, the small punch test (i.e., SP method) has been widely studied due to its advantages of micro-loss sampling.

At present, the sampling position is mainly that the sampling is carried out by a method of cutting a piece by a wire and a grinding wheel on the surface of a material (taking a pipeline as an example) or cutting the material by a bowl-shaped die, the sampling is similar to a 'slice', and the sampling thickness is greatly limited for ensuring the safe and stable operation of equipment. If the thickness of the pipeline is small, the pipeline is permanently damaged after sampling by the sampling method.

An effective solution to the problems in the related art has not been proposed yet.

SUMMERY OF THE UTILITY MODEL

To the above-mentioned technical problem among the correlation technique, the utility model provides a little jumper bar test surface sampling device can solve above-mentioned problem.

In order to achieve the technical purpose, the technical scheme of the utility model is realized as follows:

a small punch test surface sampling device comprises a shell, wherein a screw rod is arranged at the top of the shell, a lifting rod is arranged in the shell, the bottom of the screw rod is connected with the lifting rod, a supporting rod is arranged at the bottom of the lifting rod, a support is arranged on the supporting rod, a motor is arranged on the support, and a sampling die end is arranged at the driving end of the motor; the vertical swing arm that is provided with on the sampling die tip, the top of swing arm is provided with the tool bit hand wheel, the bottom of swing arm is provided with the gear, gear drive is connected with the tool bit.

Furthermore, empty slots are formed in two sides of the shell, the supporting rod moves up and down in the empty slots, and scales are arranged on the edges of the empty slots.

Further, gear engagement has the slide bar of taking the spread groove, the slide bar is connected with spherical head through screw thread rotation, spherical head is connected with the slider, the slider slides in the slide.

Furthermore, the bottom of the shell is provided with a base, and four corners of the base are provided with electromagnet supports.

Furthermore, a pawl for preventing reverse rotation is arranged in the tool bit hand wheel.

Furthermore, a reinforcing rod is arranged in the shell.

Further, the outer surface of the rotating rod is provided with a sampling mold shell.

Further, the motor is connected with the support through a fixing screw.

Furthermore, a device hand wheel is arranged on the screw rod.

Furthermore, a shock pad is arranged between the support and the motor.

The utility model has the advantages that: the utility model discloses can be according to the actual conditions of material, need not to get the sample of full thickness direction, can get the cylinder sample of certain thickness according to experimental design, get a plurality of samples at the thickness direction through wire-electrode cutting after the sample takes off and study, not only satisfy SP test's requirement, do microcosmic metallography, multiple experiments such as electron microscope to the performance of comprehensive judgement material, evaluation equipment's life-span.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic view of the assembly of a small punch test surface sampling apparatus;

FIG. 2 is a schematic view of a sampling mold tip;

FIG. 3 is a schematic view of the bottom of the tool tip;

FIG. 4 is a schematic view of tool tip deflection.

In the figure: 1 hob, 2 device handwheels, 3 motors, 4 shock pads, 5 supports, 6 shells, 7 scaleplates, 8 fastening screws, 9 bases, 10 motor cables, 11 lifting rods, 12 fixing screws, 13 supporting rods, 14 tool bit handwheels, 15 turntables, 16 sampling die shells, 17 tool bits, 18 electromagnet switches, 19 electromagnet supports, 20 electromagnet cables, 21 motor emergency stop buttons, 22 reinforcing rods, 23 motor shafts, 24 sampling die ends, 25 fixing shells, 26 sliding rods, 27 connecting grooves, 28 baffles, 29 supports, 30 spherical heads, 31 sliding blocks, 32 slideways, 33 empty grooves and 34 gears.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art all belong to the protection scope of the present invention.

As shown in fig. 1-4, the small punch test surface sampling device according to the embodiment of the present invention includes a housing 6, a screw rod 1 is disposed on the top of the housing 6, a lifting rod 11 is disposed in the housing 6, the bottom of the screw rod 1 is connected to the lifting rod 11, a support rod 13 is disposed at the bottom of the lifting rod 11, a bracket 5 is disposed on the support rod 13, a motor 3 is disposed on the bracket 5, and a sampling mold end 24 is disposed at the driving end of the motor 3; the vertical swing arm 15 that is provided with on sample mould end 24, the top of swing arm 15 is provided with tool bit hand wheel 14, the bottom of swing arm 15 is provided with gear 34, gear 34 transmission is connected with tool bit 17.

In a specific embodiment of the utility model, shell 6 both sides are equipped with the dead slot, bracing piece 13 is in reciprocate in the dead slot, the border of dead slot is provided with scale 7.

In one embodiment of the present invention, the gear 34 is engaged with the sliding rod 26 having the connecting groove 27, the sliding rod 26 is connected with the spherical head 30 through a screw rotation, the spherical head 30 is connected with the sliding block 31, and the sliding block 31 slides on the sliding way 32.

In a specific embodiment of the present invention, the bottom of the housing 6 is provided with a base 9, and four corners of the base 9 are provided with electromagnet supports 19.

In one embodiment of the present invention, an anti-reverse pawl is provided in the bit hand wheel 14.

In one embodiment of the present invention, a reinforcing rod 22 is provided in the housing 6.

In a specific embodiment of the present invention, the outer surface of the rotating rod 15 is provided with a sampling mold housing 16.

In a specific embodiment of the present invention, the motor 3 is connected to the bracket 5 through a fixing screw 12.

In a specific embodiment of the present invention, the screw rod 1 is provided with a device hand wheel 2.

In a specific embodiment of the present invention, a shock absorbing pad 4 is disposed between the bracket 5 and the motor 3.

For the convenience of understanding the above technical solutions of the present invention, the above technical solutions of the present invention are explained in detail through specific use modes below.

When specifically using, according to the utility model discloses a little jumper bar test surface sampling device, the utility model discloses a manual feed also can improve to the electron feed through addding the device, manual feed speed is controlled by device hand wheel 2, motor 3 adopts infinitely variable mode, speed can adopt knob or digital mode to adjust at 0~3000 commentaries on classics within range, increase shock pad 4 between motor 3 and the support 5, it mainly is the motor vibrations that slow down the motor rotation and arouse, the life of motor is improved, motor emergency stop button 21 mainly uses when taking place unusually in the device operation process, the button is pressed, motor rotation rate reduces to 0 immediately.

The rotary rod 15 is driven to enable the gear 34 to rotate by rotating the tool bit hand wheel 14, the gear 34 drives the sliding rod 26 to slide forwards through the connecting groove 27, the outer surface of the sliding rod 26 is provided with external threads and is connected with a hole with internal threads on the spherical head 30, the sliding rod 26 and the spherical head 30 can also be connected through a bolt device, in the process that the sliding rod 26 slides forwards, the spherical head 30 rotates to drive the sliding block 31 to slide in the slide way 32, meanwhile, the tool bit 17 deflects, and finally, the sample is cut off. An anti-reverse rotation pawl is arranged in the tool bit hand wheel 14, the tool bit hand wheel 14 cannot rotate reversely in the process of cutting off a sample by rotating the tool bit, and after cutting off is completed, the tool bit 14 hand wheel can rotate reversely by moving the anti-reverse rotation pawl to drive the sliding rod 26 to return to the original position. The cutting head 17 is made of hard material, generally made of diamond or material with tensile strength greater than 1000Mpa, and the lower part of the cutting head 17 is slightly lower than the bottom of the sampling die shell 16. The sampling die housing 16 is cylindrical and is made of a material having a hardness and strength greater than the hardness and strength of the equipment being sampled. The casing 6 comprises the cuboid shape of metal material constitution, and the casing 6 three-sided is sealed, and one side is open, provides good heat dissipation for motor 3 and tool bit 17 on the one hand, is convenient for operating personnel to observe the monitoring of the operation condition of sample process and each mechanism on the one hand. The reinforcing rods 22 provide stable support for the closed surface, and one or more reinforcing rods may be provided according to circumstances, and the reinforcing rods 22 are provided on the inner wall of the housing 6. The two sides of the shell 6 are provided with empty grooves with certain lengths, supporting rods 13 are arranged, and a scale 7 is arranged near the supporting rods 13 on the outer wall of the shell 6 and used for observing the feed amount (the size in the thickness direction). Support 29 is located at the bottom of sampling mold housing 16 for a fixed permanent connection, and support 26 is in a fixed permanent connection with stationary housing 25. The fixed shell 25 and the sliding rod 26 are cylindrical, and the inner diameter of the fixed shell is slightly larger than the outer diameter of the sliding rod 26, so that the sliding of the sliding rod 26 is facilitated. For making the better laminating in surface of electro-magnet support 19 and the material of taking a sample, improve equipment's stability, electro-magnet support 19 sets up to patterns such as plane and area arcwall face, can dismantle, change. When the device is used, in order to further ensure the stability of the device, a rubber pad can be added at the bottom of the electromagnet support 19. The electromagnet supports 19 are provided with 4 supports, and one of the supports can be adjusted in height according to the surface condition of the material.

Because the conditions (pressure, temperature, fluid scouring, corrosion and the like) of the material in the thickness direction are different, the sampling in the thickness direction not only can research the mechanical properties of the material in different thicknesses, but also can research the microscopic properties of the material by methods such as microscopic metallographic phase, electron microscope and the like. Finally, the performance and the service life of the material can be analyzed through various data, tissues and the like.

For the operating condition of some materials, if its thickness direction performance difference is not big, just need not to take a sample in full thickness direction, can take the sample of certain thickness through this device and study.

After sampling, the holes are reinforced in situ by welding plugs, so that micro-loss research of SP test is realized, and the use of equipment is not influenced.

The device can directly sample the weakest links on equipment including equipment welding seams and heat affected zones for research.

The method comprises the following specific operation steps:

1. the cutting head is mounted according to fig. 2 and the sampling device is mounted according to fig. 1.

2. The device is placed right above a sample to be sampled, the electromagnet switch of the base is started, the support is adjusted, the rubber pad is added at a required place to fix the device, and the plane does not produce any displacement.

3. And rotating a hand wheel of the device to enable the tool bit to be in contact with the surface of the equipment and recording the scales on the shell.

4. And starting the motor, and adjusting the initial speed as low as possible.

5. And rotating the device hand wheel to start sampling. The feed speed can be properly increased, the rotating speed of the motor is not easy to be too high, and a thicker hardening layer can be formed on the cutting surface when the rotating speed is too high.

6. While feeding and sampling, the scale of the shell is observed. And stopping rotating the hand wheel of the device after the set sampling thickness is reached.

7. And rotating a tool bit hand wheel to drive the tool bit to deflect, and stopping the rotation of the motor after the sampling is cut off.

8. And reversing the hand wheel of the tool bit to restore the tool bit to the original position.

9. And lifting the sampling grinding tool out of the surface of the material by reversing a hand wheel of the device.

10. And finishing sampling.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A small punch test surface sampling device comprises a shell (6), and is characterized in that a screw rod (1) is arranged at the top of the shell (6), a lifting rod (11) is arranged in the shell (6), the bottom of the screw rod (1) is connected with the lifting rod (11), a support rod (13) is arranged at the bottom of the lifting rod (11), a support (5) is arranged on the support rod (13), a motor (3) is arranged on the support (5), and a sampling die end (24) is arranged at the driving end of the motor (3); the vertical swing arm (15) that is provided with on sampling die end (24), the top of swing arm (15) is provided with tool bit hand wheel (14), the bottom of swing arm (15) is provided with gear (34), gear (34) transmission is connected with tool bit (17).

2. The small punch test surface sampling device according to claim 1, characterized in that the housing (6) is provided with a hollow groove on both sides, the support rod (13) moves up and down in the hollow groove, and a scale (7) is arranged along the edge of the hollow groove.

3. The small punch test surface sampling device according to claim 1, wherein the gear (34) engages a slide bar (26) with a connecting slot (27), the slide bar (26) being rotatably connected by a screw thread to a spherical head (30), the spherical head (30) being connected to a slide (31), the slide (31) sliding on a slide (32).

4. The small punch test surface sampling device according to claim 1, characterized in that a base (9) is arranged at the bottom of the housing (6), and electromagnet supports (19) are arranged at four corners of the base (9).

5. The small ram test surface sampling device of claim 1, wherein an anti-reverse rotation pawl is provided in the bit hand wheel (14).

6. The small punch test surface sampling device of claim 1, wherein a reinforcing rod (22) is disposed within the housing (6).

7. The small punch test surface sampling device according to claim 1, characterized in that the outer surface of the screw (15) is provided with a sampling die housing (16).

8. The small punch test surface sampling device according to claim 1, characterized in that the motor (3) is connected to the holder (5) by means of a set screw (12).

9. The small punch test surface sampling device according to claim 1, characterized in that the screw (1) is provided with a device hand wheel (2).

10. The small punch test surface sampling device according to claim 1, characterized in that a shock pad (4) is arranged between the bracket (5) and the motor (3).