CN115791063B - Drill fatigue impact damage tester - Google Patents
Drill fatigue impact damage tester Download PDFInfo
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- CN115791063B CN115791063B CN202310050224.2A CN202310050224A CN115791063B CN 115791063 B CN115791063 B CN 115791063B CN 202310050224 A CN202310050224 A CN 202310050224A CN 115791063 B CN115791063 B CN 115791063B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Abstract
The invention discloses a drill fatigue impact damage testing machine in the technical field of impact damage testing, which comprises a base and a data acquisition and processing system, wherein the base is fixedly connected with a bracket and a sample clamp, the top of the bracket is provided with a turning cylinder, the upper end and the lower end of the turning cylinder are respectively provided with a driving shaft, a driving component for driving the driving shaft to rotate and a driven shaft which is vertically and slidingly connected with the turning cylinder, the outer wall of the driving shaft is provided with a cam groove, the top of the driven shaft is fixedly connected with a supporting leg, the top of the supporting leg is slidingly connected with a driven rolling pin, the end part of the driven rolling pin extends into the cam groove and is fixedly connected with a yielding spring between the supporting leg, the bottom of the driven shaft is provided with an impact force adjusting cylinder driven by the driven shaft, and the impact force adjusting cylinder is provided with threads and two ends of the impact force adjusting cylinder are respectively provided with an adjusting ring; different frequencies and different energy impact processes of the actual drilling process can be simulated, the impact frequency and the impact energy can be accurately controlled, and the energy reaches a certain level.
Description
Technical Field
The invention relates to the technical field of impact damage testing, in particular to a drill fatigue impact damage testing machine.
Background
Polycrystalline diamond (Polycrystalline diamond compact, PDC) drill bits are widely used in underground drilling processes including oil and gas exploration, the main working parts of the PDC drill bits are PDC drill bit teeth arranged at the crowns of the PDC drill bits, the service life of the PDC drill bits is greatly influenced by the mechanical properties of the PDC drill bit teeth, and then the time cost and the economic cost of the drilling process can be greatly influenced. The mechanical performance indexes of the PDC drill bit tooth mainly comprise: impact resistance, wear resistance, thermal stability, etc., wherein impact resistance directly affects the service life of the PDC bit teeth.
The current method for testing the impact resistance is to use a conventional drop hammer impact testing machine and a pendulum hammer impact testing machine for testing. In the production process of PDC drill bits, drop hammer impact is often used to test the impact resistance of PDC drill bit teeth. The general principle of drop hammer impact testing is to drop an impact target onto the PDC bit teeth at a certain height, evaluate the impact resistance of the test specimen by calculating the kinetic energy generated at that height, and after each impact, if the sample is not damaged, set a greater height to impact until the test specimen is damaged. This test procedure gives the samples conventional impact properties.
In practical drilling engineering, due to the fact that the rotating speed of the PDC drill bit is high, when extremely high heterogeneity exists in a stratum (the stratum rock soil contains a large amount of hard phases and is similar to concrete doped with limestone and small stones), the PDC drill bit can be subjected to high-frequency impact of the hard phases in the stratum rock soil in the rotary drilling process, and many students can find the phenomenon at present, but due to the lack of experimental equipment, indoor experimental tests cannot be conducted. According to the common petroleum drilling parameters, the impact frequency is approximately 1-10 Hz, and the specific impact frequency is influenced by the content of heterogeneous hard phases in the stratum. Taking rotary table drilling as an example, when the drill bit is impacted by only one hard rock per revolution downhole, its impact frequency is 1Hz. Because the impact energy is smaller, but the frequency is higher, the conventional drop hammer impact experiment cannot simulate the high-frequency low-energy impact process of the actual drilling process, and besides the high-frequency impact environment needs to be provided, the impact frequency and the impact energy also need to be accurately controlled, the energy reaches a certain level, and the existing equipment cannot achieve the problem well.
Disclosure of Invention
In view of the above problems, the present invention aims to provide a novel testing device, which can create an impact environment with controllable frequency and energy, and test PDC drill bit teeth so as to simulate and evaluate the service life of PDC drill bit tooth samples under the working condition of actually drilling heterogeneous stratum. The invention solves the problem that the current PDC drill bit tooth impact test equipment cannot build higher impact frequency and accurately control energy.
In order to achieve the above purpose, the present invention provides the following technical solutions: the device comprises a base and a data acquisition and processing system, the base fixedly connected with support and sample anchor clamps, the sample anchor clamps are used for the centre gripping to strike the sample, the diversion section of thick bamboo is installed at the support top, both ends are rotated respectively and are provided with the driving shaft, be used for driving shaft pivoted drive assembly and with the driven shaft of diversion section of thick bamboo vertical sliding connection about the diversion section of thick bamboo, the cam groove has been seted up to the driving shaft outer wall, driven shaft top fixedly connected with stabilizer blade, stabilizer blade top sliding connection has driven roll pin, driven roll pin tip extends to in the cam groove and fixedly connected with spring of stepping down between the stabilizer blade, driven shaft bottom is installed by driven shaft driven impulsive force adjustment section of thick bamboo, threaded and both ends are respectively installed an adjusting ring on the impulsive force adjustment section of thick bamboo, two from top to bottom at impulsive force adjustment section of thick bamboo built-in dynamometer, force application spring, impact head, through rotatory two adjusting rings change the compression volume of force application spring and come the regulation and finally exert on impact head to guarantee that the impact energy is controllable when impact head contacts the impact sample.
As a further scheme of the invention, the steering cylinder comprises a cylinder cover, a cylinder body and a locking component, wherein the cylinder cover, the cylinder body and the locking component are used for locking, the bottom of the cylinder cover is fixedly connected with a lantern ring used for extruding a driven rolling pin to enable the driven rolling pin to be close to each other, the driving shaft comprises a shaft body and a replaceable cam body, the shaft body is clamped with a limiting piece used for limiting the shaft body to move up and down, the clamping part of the limiting piece and the shaft body is semicircular and elastic, the limiting piece is in sliding connection with the cylinder cover, and a clamping component is arranged between the cam body and the shaft body.
As a further scheme of the invention, the clamping assembly comprises a clamping block which is in sliding connection with the cam body, and a pushing block which is fixedly connected with the inside of the shaft body and used for pushing the clamping block to move, wherein a triggering piece is vertically and slidably connected in the shaft body, the triggering piece is L-shaped, the top of the triggering piece is positioned outside the shaft body, return springs are fixedly connected with the pushing block and the clamping block, and the return springs are respectively fixedly connected with the shaft body and the cam body.
As a further scheme of the invention, the locking assembly comprises a locking pin fixedly connected with the barrel cover and a locking sleeve fixedly connected with the barrel body, and a locking nut is connected between the locking sleeve and the locking pin in a threaded manner.
As a further scheme of the invention, the top of the bracket is fixedly connected with a clamping groove, the outer wall of the cylinder body is fixedly connected with a clamping piece clamped with the clamping groove, the clamping piece is fixedly connected with a clamping spring, the top of the clamping spring is fixedly connected with a sliding plate fixedly connected with the cylinder cover, and the sliding plate is slidably connected with a motor frame.
As a further scheme of the invention, the driving assembly comprises a driving motor which is arranged on a motor frame, the top of the motor frame is rotationally connected with a driving wheel and a driven wheel, the driving wheel and the driven wheel are respectively sleeved on an output shaft of the driving motor and a driving shaft through belt transmission, the side wall of the top of the driving shaft is provided with a sliding groove, and the inner wall of the driven wheel is fixedly connected with a sliding key.
As a further scheme of the invention, the outer walls of the impact head and the dynamometer are respectively fixedly connected with a lug which is in sliding connection with the impact force adjusting cylinder, and the lugs are positioned between the adjusting rings.
As a further scheme of the invention, the top of the cylinder cover and the bottom of the cylinder body are respectively clamped with a rotary centering block and a linear motion centering block, the adjacent ends of the rotary centering block and the linear motion centering block are square, and the linear motion centering block is vertically and slidingly connected with the driven shaft through a key.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, a specific cylindrical cam mechanical structure is used for converting the motion of rotating around the shaft into the reciprocating motion along the axial direction, namely, the driving shaft rotates, so that the cam groove on the side wall of the driving shaft rotates, the rolling pin in the cam groove moves up and down along the cam groove, and the rolling pin drives the driven shaft to reciprocate up and down through the support legs, so that the continuous impact test is realized;
according to the invention, through the handle control of the structural size of the cam, an axial travelling distance can be set, and the motor capable of controlling the rotating speed is matched, so that the frequency of axial reciprocating motion can be accurately calculated through the rotating speed, the rotating speed grade is changed, namely the working frequency of equipment can be changed, different frequency impact processes in the actual drilling process can be simulated, the impact frequency can be accurately controlled, and the energy can reach a certain level;
according to the invention, the compression amount of the force application spring is changed by rotating the two adjusting rings to adjust the pressure finally applied to the impact head, different pressures can be adjusted to be applied to the impact head according to the requirements, the deformation amount of the force application spring after the impact head contacts the impact sample is designed, so that the force applied to the impact sample is considered to be constant in the impact contact process, the impact energy received by the impact head each time can be initially obtained by calculating the stroke of the impact head and the force given by the dynamometer, the impact process of different energy in the actual drilling process can be simulated, the impact energy can be accurately controlled, and the energy can reach a certain level.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed for the description of 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 that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a schematic cross-sectional view of the general structure of the present invention;
FIG. 3 is an enlarged schematic view of the structure of FIG. 2A according to the present invention;
FIG. 4 is a schematic cross-sectional view of an explosive structure at the junction of the bracket and the steering cylinder according to the present invention;
FIG. 5 is a schematic cross-sectional view of a cross-sectional structure of a joint between a cylinder and a driven shaft according to the present invention;
FIG. 6 is an enlarged schematic view of the structure of FIG. 5B according to the present invention;
FIG. 7 is a schematic diagram of the connection relationship of the driven shafts according to the present invention;
FIG. 8 is a schematic view of the connection relationship of the cylinder cover of the present invention;
FIG. 9 is a schematic diagram of an explosion structure of the shaft connection of the present invention;
in the drawings, the list of components represented by the various numbers is as follows:
1. a base; 2. a bracket; 21. a clamping groove; 3. a direction-changing cylinder; 31. a cylinder cover; 32. a cylinder; 33. a collar; 34. a clamping piece; 35. a clamping spring; 36. a slide plate; 37. a motor frame; 5. rotating the centering block; 6. a driving shaft; 61. cam grooves; 62. a shaft body; 63. a cam body; 64. a limiting piece; 7. a driven shaft; 71. a support leg; 73. a yielding spring; 8. a linear motion centering block; 9. an impulse adjusting cylinder; 91. a bump; 10. an adjusting ring; 11. a sample holder; 12. a driven rolling pin; 14. a load cell; 15. a force spring; 16. an impact head; 17. impacting the sample; 18. a clamping block; 181. a pushing block; 182. a trigger; 183. a return spring; 191. a locking pin; 192. a locking sleeve; 193. a locking nut; 20. a driving motor; 201. a driving wheel; 202. driven wheel; 203. a sliding key.
Description of the embodiments
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-9, the present invention provides a technical solution: the device comprises a base 1 and a data acquisition and processing system, wherein the base 1 is fixedly connected with a support 2 and a sample clamp 11, the sample clamp 11 is used for clamping an impact sample 17, a steering cylinder 3 is arranged at the top of the support 2, a driving shaft 6, a driving component used for driving the driving shaft 6 to rotate and a driven shaft 7 which is vertically and slidably connected with the steering cylinder 3 are respectively arranged at the upper end and the lower end of the steering cylinder 3, a cam groove 61 is arranged on the outer wall of the driving shaft 6, a support leg 71 is fixedly connected at the top of the driven shaft 7, a driven rolling pin 12 is slidably connected at the top of the support leg 71, the end part of the driven rolling pin 12 extends into the cam groove 61 and a yielding spring 73 is fixedly connected between the support leg 71, an impact force adjusting cylinder 9 driven by the driven shaft 7 is arranged at the bottom of the driven shaft 7, a regulating ring 10 is arranged at the two ends of the impact force adjusting cylinder 9, a dynamometer 14, a force applying spring 15 and an impact head 16 are respectively arranged in the impact force adjusting cylinder 9 from top to bottom, and the compression amount of the force applying spring 15 is changed through rotating the two regulating rings 10 to regulate the pressure finally applied to the impact head 16, so that when the impact head 16 contacts the impact sample 17, the impact energy is controllable;
the equipment mainly can be divided into two parts according to the functional module, the first part is a transmission part, the motion of pivoting is converted into the reciprocating motion along the axial direction by using a specific cylindrical cam mechanical structure, namely, the driving shaft 6 rotates, the cam groove 61 on the side wall of the driving shaft 6 rotates, the rolling pin 12 in the cam groove 61 moves up and down along the cam groove 61, the rolling pin 12 drives the driven shaft 7 to reciprocate up and down through the supporting leg 71, an axial travelling distance can be set by controlling the size of the cam structure, a motor capable of controlling the rotating speed is matched, the frequency of the axial reciprocating motion can be accurately calculated through the rotating speed, the rotating speed grade is changed, the working frequency of the equipment can be changed, and the calculation formula of the impact frequency is as follows:
。
wherein F is the impact frequency of the device in Hz; r is the rotation speed of a main shaft of the equipment, and the unit is rev/s; n is the number of up and down strokes of the impact head 16 per revolution of the machine spindle in 1/rev.
The second key component is the energy control system. The conventional drop hammer impact test process is to judge the strength grade of a test sample by calculating the gravitational potential energy of the whole hammer head, namely, consider that all gravitational potential energy of the hammer body acts on the sample. The device thus uses a force spring 15 of adjustable force magnitude and a load cell 14 to specify and measure a single impactIs a function of the energy level of the battery. In order to be able to approximate the actual energy value precisely, it is necessary to shorten the axial travel distance of the first part of the device as far as possible, in which case the deformation of the force spring 15 during contact with the impact sample 17 can be negligible; meanwhile, the deformation of the force application spring 15 of the impact head 16 after the impact sample 17 is contacted is designed, so that the force applied to the impact sample is considered to be constant in the impact contact process, and the impact energy received by the impact sample 17 at each time can be obtained initially by calculating the stroke of the impact head 16 and the force given by the dynamometer 14. The calculation formula is as follows:
。
wherein E is impact energy, and the unit is J; f is the average elastic force of the force application spring 15 measured by the force measuring meter 14, and the unit is N; s is the stroke of the equipment impact head 16 when reciprocating, and the unit is m; h is the distance from the contact point of the impact sample 17 and the impact head 16 to the highest point of travel of the impact head 16, and is in m, and h is smaller than S.
The device mainly comprises: device main body structure, data acquisition processing system. The main structure of the device comprises a base 1, a sample clamp 11, a steering cylinder 3, a driving shaft 6, a driven shaft 7, a cam groove 61, a supporting leg 71, a driven rolling pin 12, a yielding spring 73, an impulse adjusting cylinder 9, an adjusting ring 10, a dynamometer 14, a force-applying spring 15 and an impact head 16. The data acquisition system acquires data through the load cell 14;
in the main body structure of the equipment, the base 1 and the bracket 2 mainly play a role in fixedly supporting the working main body part; the sample holder 11 is used to hold the impact sample 17 for testing; the driving shaft 6 in the direction-changing cylinder 3 rotates, the driving shaft 6 is of a cam structure, driven rolling pins 12 are arranged on two sides of the driven shaft 7, when the driving shaft 6 rotates, the supporting legs 71 are caused to reciprocate up and down through the rolling of the driven rolling pins 12 in the cam grooves 61, and the impact force adjusting cylinder 9 is arranged at the lower end of the driven shaft 7 and used for adjusting the impact energy. The impulse adjusting cylinder 9 is provided with threads, two ends of the threads are respectively provided with an adjusting ring 10, and a dynamometer 14, an application spring 15 and an impact head 16 are arranged in the sleeve from top to bottom between the two adjusting rings 10. By rotating the two adjusting rings 10, the distance between the two adjusting rings 10 is changed, the compression amount of the force application spring 15 is changed to adjust the pressure finally applied to the impact head 16, so that when the impact head 16 contacts an impact sample 17, the impact energy is ensured to be controllable, the impact frequency and the impact energy can be accurately controlled, the impact energy reaches a certain level each time, and the impact energy can be randomly adjusted, so that different use environments are simulated.
As an example of application: the preset impact force of the dynamometer 14 is set to be 5000N, the up-down stroke S of the impact head 16 is set to be 20mm, the distance h between the impact sample 17 and the highest point of the stroke of the impact head 16 is set to be 10mm, the reciprocating motion of the driven shaft 7 caused by each rotation of the driving shaft 6 is designed to be 4 times, and the rotating speed of the driving shaft is set to be 20 circles per second. It is known that the impact energy per impact on the sample 17 is about 50J and the impact frequency is 80Hz.
As an example of application: the preset impact force of the dynamometer 14 is set to 2000N, the up-down stroke S of the impact head 16 is set to 10mm, the distance h between the impact sample 17 and the highest point of the stroke of the impact head 16 is 5mm, the reciprocating motion of the driven shaft 7 caused by each rotation of the driving shaft 6 is designed to be 2 times, and the rotating speed of the driving shaft 6 is 10 circles per second. It is known that the impact energy applied to the sample 17 per impact is about 10J and the impact frequency is 20Hz.
As an example of application: the preset impact force of the dynamometer 14 is set to be 100N, the up-down stroke S of the impact head 16 is set to be 10mm, the distance h between the impact sample 17 and the highest point of the stroke of the impact head 16 is set to be 9mm, the reciprocating motion of the driven shaft 7 caused by each rotation of the driving shaft 6 is designed to be 2 times, and the rotating speed of the driving shaft 6 is set to be 1 circle per second. It is known that the impact energy applied to the sample 17 per impact is about 0.1J and the impact frequency is 2Hz.
Preferred application examples: in order to minimize the test error caused by the contact time between the impact head 16 and the impact sample 17, the up-down stroke of the impact head 16 is set to be not more than 10mm, the distance between the impact sample 17 and the highest point of the stroke of the impact head 16 is not less than 5mm, and the impact frequency of the impact sample 17 is designed to be not less than 50Hz, so that the set impact force and the impact force applied to the impact sample 17 in the actual impact process can be ensured to be similar.
In the above embodiment, the stress of the dynamometer 14, the up and down stroke of the impact head 16, the distance between the impact sample 17 and the highest point of the stroke of the impact head 16, the number of impacts per rotation of the driving shaft 6, the rotation speed of the driving shaft 6, and the like are controllable parameters, so that the expected real design requirements of the device can be met, and the control of the impact process frequency and energy can be completed.
The operation method of the equipment comprises the following steps:
s1, opening an impact force measuring system to monitor the dynamometer 14;
s2, mounting the tested impact sample 17 on a sample clamp 11 for fixing;
s3, manually rotating the driving shaft 6 to enable the impact head 16 to be positioned at the top end of the stroke;
s4, rotating and adjusting the two adjusting rings 10; firstly, rotating the lowest adjusting ring 10 to keep a certain fixed distance between the impact head 16 and the upper surface of the test sample 17;
s5, keeping the impact head 16 just in contact with the upper surface of the test sample 17, fixing the lower adjusting ring 10, then rotating the adjusting ring 10 at the upper part for controlling the position of the dynamometer 14 downwards, and adjusting the length of the force application spring 15 and the position of the dynamometer 14 to keep the stress of the dynamometer 14 at an experimental preset value;
s6, opening the dynamometer 14 to record the impact force, switching on the power supply to drive the motor to rotate, and starting the impact test until the sample 17 reaches a preset damage condition;
s7, extracting impact force data of an impact force data acquisition system, and calculating and recording the total impact energy value received by the test sample 17 in the whole process.
As a further scheme of the invention, the steering cylinder 3 comprises a cylinder cover 31, a cylinder body 32, a sleeve ring 33 for extruding the driven rolling pins 12 to enable the driven rolling pins 12 to be close to each other, and a locking assembly, wherein the bottom of the cylinder cover 31 is fixedly connected with the sleeve ring 33 for extruding the driven rolling pins 12, the driving shaft 6 comprises a shaft body 62 and a replaceable cam body 63, the shaft body 62 is clamped with a limiting piece 64 for limiting the shaft body 62 to move up and down, the clamping part of the limiting piece 64 and the shaft body 62 is semicircular and elastic, the limiting piece 64 is in sliding connection with the cylinder cover 31, and a clamping assembly is arranged between the cam body 63 and the shaft body 62;
in the use process, the cylinder cover 31 and the cylinder body 32 are fixed through the locking component, when the impact with different frequencies needs to be tested, the limiting piece 64 is firstly separated from the shaft body 62, so that the shaft body 62 can move up and down, then the locking between the cylinder cover 31 and the cylinder body 32 by the locking component is canceled, the cylinder cover 31 drives the lantern ring 33 to move up, after the lantern ring 33 is separated from the driven rolling pin 12, the driven rolling pin 12 is pushed to move outwards by the abdicating spring 73, the driven rolling pin 12 is moved out of the cam groove 61, and the cam body 63 is not influenced when being taken out; when the distance between the lantern ring 33 and the barrel 32 is enough, the limit of the clamping assembly to the cam body 63 is canceled, the cam body 63 is taken out, the cam bodies 63 with different frequencies are replaced, the clamping assembly connects the replaced cam body 63 with the shaft body 62, then the barrel cover 31 is reset, the lantern ring 33 at the bottom of the barrel cover 31 presses down the positioning assembly, the positioning assembly is separated from the driven shaft 7, and the influence of the positioning assembly on the rotation of the driven shaft 7 is avoided.
As a further scheme of the invention, the clamping assembly comprises a clamping block 18 which is in sliding connection with the cam body 63, a push block 181 which is fixedly connected with the inside of the shaft body 62 and used for pushing the clamping block 18 to move, a trigger piece 182 which is vertically and slidably connected with the inside of the shaft body 62, wherein the trigger piece 182 is L-shaped, the top of the trigger piece 182 is positioned outside the shaft body 62, return springs 183 are fixedly connected with the push block 181 and the clamping block 18, and the return springs 183 are fixedly connected with the shaft body 62 and the cam body 63 respectively;
in the process of replacing the cam body 63 with different frequencies, after the cylinder cover 31 moves to the topmost end, the cam body 63 is pulled upwards through the shaft body 62, when the trigger piece 182 contacts the cylinder cover 31, the trigger piece 182 stops moving upwards, the push block 181 and the clamping block 18 continue to ascend along with the shaft body 62, the trigger piece 182 extrudes the push block 181, the push block 181 stretches the reset spring 183 fixedly connected with the push block 181 and pushes the clamping block 18 out of the shaft body 62, after the clamping block 18 moves out of the shaft body 62, the shaft body 62 and the cam body 63 can be separated, so that the cam body 63 can be replaced at will, and the up-and-down stroke times of the impact head 16 in each rotation of the driving shaft 6 can be changed, so that a single tester provides different impact frequencies, and the testing cost of the fatigue impact test of a drill bit is greatly reduced; the installation process is in contrast to the removal process and will not be described in detail here.
As a further aspect of the present invention, the locking assembly includes a locking pin 191 fixedly connected with the cylinder cover 31 and a locking sleeve 192 fixedly connected with the cylinder 32, and a locking nut 193 is screwed between the locking sleeve 192 and the locking pin 191;
in the use process, the locking nut 193 is unscrewed, the cylinder cover 31 is moved upwards, the cylinder cover 31 drives the locking pin 191 to ascend and separate from the locking sleeve 192, otherwise, the cylinder cover 31 is moved downwards to insert the locking pin 191 into the locking sleeve 192, and the cylinder cover 31 and the cylinder body 32 can be separated and connected by screwing the locking nut 193, so that the follow-up replacement of the cam body 63 is facilitated.
As a further scheme of the invention, the top of the bracket 2 is fixedly connected with a clamping groove 21, the outer wall of the cylinder 32 is fixedly connected with a clamping piece 34 clamped with the clamping groove 21, the clamping piece 34 is fixedly connected with a clamping spring 35, the top of the clamping spring 35 is fixedly connected with a sliding plate 36 fixedly connected with the cylinder cover 31, and the sliding plate 36 is slidably connected with a motor frame 37;
in the use process, the connection of the steering cylinder 3 and the bracket 2 can be realized through the matching of the clamping groove 21 and the clamping piece 34, so that the worn base 1 is convenient to replace, and the use cost of the testing machine is reduced; after the locking assembly cancels the locking of the cylinder 32 and the cylinder cover 31, the clamping spring 35 in a compressed state stretches, so that the sliding plate 36 drives the cylinder cover 31 to move upwards, the hand of a worker is not needed, and the worker can conveniently pull the driving shaft 6 to move upwards; the sliding plate 36 moves up and down to vertically slide along the motor frame 37, and the motor frame 37 plays a guiding role on the sliding plate 36, so that the deviation of the cylinder cover 31 and the cylinder body 32 is avoided, and the difficulty in replacing the cam body 63 is increased.
As a further scheme of the invention, the driving assembly comprises a driving motor 20 which is arranged on a motor frame 37, a driving wheel 201 and a driven wheel 202 are rotatably connected to the top of the motor frame 37, the driving wheel 201 and the driven wheel 202 are transmitted through a belt and respectively sleeved on an output shaft of the driving motor 20 and a driving shaft 6, a sliding groove is formed in the side wall of the top of the driving shaft 6, and a sliding key 203 is fixedly connected to the inner wall of the driven wheel 202;
in the use process, the driving motor 20 drives the driving wheel 201 to rotate through the output shaft, the driving wheel 201 drives the driven wheel 202 to rotate through the belt, the driven wheel 202 drives the driving shaft 6 to rotate through the sliding key 203, the driving shaft 6 is driven to rotate, the testing machine is enabled to work, the sliding groove on the side wall of the driving shaft 6 is matched with the sliding key 203 on the inner wall of the driven wheel 202, the driving shaft 6 can be driven to rotate through the driven wheel 202, the driving shaft 6 is not influenced to move up and down, in addition, the sliding key 203 can drive the driving shaft 6 to rotate through the sliding groove, and the driving shaft 6 is not influenced to slide up and down.
As a further scheme of the invention, the outer walls of the impact head 16 and the dynamometer 14 are respectively fixedly connected with a convex block 91 which is in sliding connection with the impact force adjusting cylinder 9, and the convex blocks 91 are positioned between the adjusting rings 10;
in the use process, the adjusting ring 10 is rotated, the adjusting ring 10 drives the impact head 16 and the dynamometer 14 to move through the convex blocks 91, when the adjusting ring 10 above is rotated, only the compression amount of the force application spring 15 is adjusted, and when the adjusting ring 10 below is rotated, the compression amount of the force application spring 15 is adjusted, and the distance between the impact head 16 and the impact sample 17 is also adjusted.
As a further scheme of the invention, the top of the cylinder cover 31 and the bottom of the cylinder 32 are respectively clamped with a rotary centering block 5 and a linear motion centering block 8, the adjacent ends of the rotary centering block 5 and the linear motion centering block 8 are square, and the linear motion centering block 8 is vertically and slidably connected with the driven shaft 7 through a key;
during the use, linear motion centering piece 8 passes through key restriction driven shaft 7 rotation to avoid driven shaft 7 to rotate along with driving shaft 6, lead to the test machine unable to carry out impact test.
Claims (7)
1. The utility model provides a drill bit fatigue impact damage testing machine, includes base (1) and data acquisition processing system, its characterized in that: the base (1) is fixedly connected with the support (2) and the sample clamp (11), the sample clamp (11) is used for clamping an impact sample (17), a steering cylinder (3) is installed at the top of the support (2), a driving shaft (6), a driving component for driving the driving shaft (6) to rotate and a driven shaft (7) vertically and slidingly connected with the steering cylinder (3) are respectively arranged at the upper end and the lower end of the steering cylinder (3), a cam groove (61) is formed in the outer wall of the driving shaft (6), a supporting foot (71) is fixedly connected at the top of the driven shaft (7), a driven rolling pin (12) is slidingly connected at the top of the supporting foot (71), a yielding spring (73) is fixedly connected between the end of the driven rolling pin (12) and the supporting foot (71), an impact force adjusting cylinder (9) driven by the driving of the driven shaft (7) is installed at the bottom of the driven shaft (7), an adjusting ring (10) is arranged at the two ends of the driven shaft (9) with threads, an inner force adjusting ring (10) is installed between the two adjusting rings (10) from top to bottom, an impact force adjusting cylinder (9) and a force measuring meter (15), -adjusting the pressure finally exerted on the impact head (16) by varying the compression of the force spring (15) by rotating both said adjustment rings (10);
the steering cylinder (3) comprises a cylinder cover (31), a cylinder body (32) and a locking assembly, wherein the cylinder cover (31) is fixedly connected with a collar (33) used for extruding a driven rolling pin (12) to enable the driven rolling pin (12) to be close to each other, the driving shaft (6) comprises a shaft body (62) and a replaceable cam body (63), the shaft body (62) is clamped with a limiting piece (64) used for limiting the shaft body (62) to move up and down, the clamping part of the limiting piece (64) and the shaft body (62) is semicircular and elastic, the limiting piece (64) is in sliding connection with the cylinder cover (31), and the cam body (63) and the shaft body (62) are provided with a clamping assembly.
2. The drill bit fatigue impact damage testing machine according to claim 1, wherein: the clamping assembly comprises a clamping block (18) which is in sliding connection with the cam body (63), and a pushing block (181) which is fixedly connected with the inside of the shaft body (62) and used for pushing the clamping block (18) to move, a triggering piece (182) is vertically and slidably connected with the inside of the shaft body (62), the triggering piece (182) is L-shaped, the top of the triggering piece is located outside the shaft body (62), return springs (183) are fixedly connected with the pushing block (181) and the clamping block (18), and the return springs (183) are respectively fixedly connected with the shaft body (62) and the cam body (63).
3. The drill bit fatigue impact damage testing machine according to claim 2, wherein: the locking assembly comprises a locking pin (191) fixedly connected with the barrel cover (31) and a locking sleeve (192) fixedly connected with the barrel body (32), and a locking nut (193) is connected between the locking sleeve (192) and the locking pin (191) in a threaded mode.
4. The drill bit fatigue impact damage testing machine according to claim 3, wherein: the utility model discloses a motor rack, including support (2), barrel (32), clamping groove (21) are connected with to support (2) top fixedly connected with, barrel (32) outer wall fixedly connected with and clamping piece (34) of clamping groove (21) joint, clamping piece (34) fixedly connected with joint spring (35), joint spring (35) top fixedly connected with and cover (31) fixedly connected with slide (36), slide (36) sliding connection has motor frame (37).
5. The drill bit fatigue impact damage testing machine according to claim 4, wherein: the driving assembly comprises a driving motor (20) arranged on a motor frame (37), a driving wheel (201) and a driven wheel (202) are rotatably connected to the top of the motor frame (37), the driving wheel (201) and the driven wheel (202) are respectively sleeved on an output shaft of the driving motor (20) and a driving shaft (6) through belt transmission, a sliding groove is formed in the side wall of the top of the driving shaft (6), and a sliding key (203) is fixedly connected to the inner wall of the driven wheel (202).
6. The drill bit fatigue impact damage testing machine according to claim 2, wherein: the impact head (16) and the outer wall of the dynamometer (14) are respectively fixedly connected with a lug (91) which is in sliding connection with the impact force adjusting cylinder (9), and the lug (91) is positioned between the adjusting rings (10).
7. The drill bit fatigue impact damage testing machine according to claim 6, wherein: the rotary centering block (5) and the linear motion centering block (8) are respectively clamped at the top of the cylinder cover (31) and the bottom of the cylinder body (32), the adjacent ends of the rotary centering block (5) and the linear motion centering block (8) are square, and the linear motion centering block (8) is vertically and slidably connected with the driven shaft (7) through a key.
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| CN202310050224.2A CN115791063B (en) | 2023-02-01 | 2023-02-01 | Drill fatigue impact damage tester |
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| CN202310050224.2A CN115791063B (en) | 2023-02-01 | 2023-02-01 | Drill fatigue impact damage tester |
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| CN101750203A (en) * | 2009-12-20 | 2010-06-23 | 安徽省华茂汽车附件制造有限公司 | Fatigue test stand of automobile pedals |
| CN106768981A (en) * | 2017-01-20 | 2017-05-31 | 广西大学 | A kind of grooved cam impact type alternation torque loading device |
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| GB1123178A (en) * | 1967-02-06 | 1968-08-14 | Hughes Tool Co | Impact tool |
| CH609461A5 (en) * | 1976-09-28 | 1979-02-28 | Aser Sa | Apparatus for inspecting and measuring the state of a suspension of a dynamically suspended object |
| CN201945432U (en) * | 2010-12-20 | 2011-08-24 | 张光辉 | Shock test stand |
| JP2014048066A (en) * | 2012-08-29 | 2014-03-17 | Mitsubishi Electric Corp | Impact test apparatus |
| CN209014237U (en) * | 2018-11-28 | 2019-06-21 | 东莞市诺尔检测科技有限公司 | A kind of electronic product vibration test case |
| CN110398695B (en) * | 2019-07-31 | 2021-08-03 | 江苏食品药品职业技术学院 | New energy automobile detection utensil convenient to adjust |
| CN112461487B (en) * | 2020-12-08 | 2022-06-07 | 中国石油天然气集团有限公司 | Impact performance testing device for underground cam type axial impactor |
| CN114199540A (en) * | 2021-12-01 | 2022-03-18 | 泸州发展机械有限公司 | Oil tank shaking durability testing device |
| CN115077838B (en) * | 2022-07-20 | 2023-02-03 | 上海秦耀航空试验技术有限公司 | High-load impact fatigue test device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101750203A (en) * | 2009-12-20 | 2010-06-23 | 安徽省华茂汽车附件制造有限公司 | Fatigue test stand of automobile pedals |
| CN106768981A (en) * | 2017-01-20 | 2017-05-31 | 广西大学 | A kind of grooved cam impact type alternation torque loading device |
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Effective date of registration: 20230413 Address after: 257200 No.9, Yanghe Road, economic development zone, Hekou District, Dongying City, Shandong Province Applicant after: SHENGLI OIL FIELD WANHE OIL CONSTRUCTION TECHNIQUE LIMITED LIABILITY Co.,Ltd. Applicant after: China University of Petroleum (Beijing) Address before: 257200 No.9, Yanghe Road, economic development zone, Hekou District, Dongying City, Shandong Province Applicant before: SHENGLI OIL FIELD WANHE OIL CONSTRUCTION TECHNIQUE LIMITED LIABILITY Co.,Ltd. |
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