CN108918134B - Impactor testing device - Google Patents
Impactor testing device Download PDFInfo
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- CN108918134B CN108918134B CN201811109641.5A CN201811109641A CN108918134B CN 108918134 B CN108918134 B CN 108918134B CN 201811109641 A CN201811109641 A CN 201811109641A CN 108918134 B CN108918134 B CN 108918134B
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- 238000012360 testing method Methods 0.000 title claims abstract description 77
- 238000000034 method Methods 0.000 claims abstract description 14
- 238000007789 sealing Methods 0.000 claims description 20
- 238000009863 impact test Methods 0.000 description 4
- 230000006978 adaptation Effects 0.000 description 2
- 210000001503 joint Anatomy 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses an impactor testing device, comprising: a main frame; the air supply device is arranged on the main frame and can move up and down along the main frame and is used for providing test air for the impactor to be tested; the clamping device is positioned below the air supply device, is arranged on the main frame and can move up and down along the main frame synchronously with the air supply device, and is used for clamping the impactor to be tested; the tray is arranged at the bottom of the main frame and comprises a base plate for bearing the impactor to be tested and the striking test thereof; and the driving device is used for providing power drive for the air supply device, the clamping device and the tray. The impactor testing device can realize automation of the impactor testing process, is suitable for impactors of different models, reduces the cost of manual operation, can realize large-scale operation, and is safe and reliable.
Description
Technical Field
The invention relates to the technical field of impactor testing, in particular to an impactor testing device.
Background
The down-the-hole impactor can be subjected to impact working test after the manufacture and assembly and before the final delivery. At present, the testing work of the impacter is completed by two or three persons in cooperation. During specific test, two persons are required to press the impactor together to form pressure with the hit backing plate, meanwhile, a third person installs an air conversion joint at the upper end of the impactor, and then pressure gas for test is opened; after the test is started, the impactor is disconnected from the test pressure gas after reaching the set time, and the impact test work is finished. When the idle-beat test work is needed, two people need to lift the impactor up with force at the same time to carry out the test work. When testing larger sized impactors, it is often difficult for two persons to perform the test due to the large weight of the impactor.
In the above-mentioned impactor testing process, not only a plurality of manpower are needed, but also the operation is difficult, and how to solve this problem is a problem that the person skilled in the art needs to solve.
Disclosure of Invention
The invention aims to provide the impactor testing device which can realize the automation of the impactor testing process, is suitable for impactors of different types, reduces the cost of manual operation, can realize large-scale operation, and is safe and reliable.
In order to achieve the above purpose, the present invention provides the following technical solutions:
an impactor testing device, comprising:
a main frame;
the air supply device is arranged on the main frame and can move up and down along the main frame and is used for providing test air for the impactor to be tested;
the clamping device is positioned below the air supply device, is arranged on the main frame and can move up and down along the main frame synchronously with the air supply device, and is used for clamping the impactor to be tested;
the tray is arranged at the bottom of the main frame and comprises a base plate for bearing the impactor to be tested and the striking test thereof;
and the driving device is used for providing power drive for the air supply device, the clamping device and the tray.
Preferably, the righting device is fixedly arranged above the tray and can horizontally move together with the tray, and is used for preventing the impactor to be tested from toppling over in the moving process of the tray.
Preferably, the driving device is a hydraulic driving device, and specifically includes:
the driving oil cylinder is used for driving the tray and the righting device to horizontally move between the lifting position of the impactor to be tested and the central position of the clamping device;
the clamping oil cylinder is used for horizontally driving the clamping device to clamp the impactor to be tested;
and the pushing lifting oil cylinder is used for vertically driving the air supply device and the clamping device to move up and down.
Preferably, the adjusting screw is vertically arranged between the air supply device and the clamping device and is used for adjusting the relative distance between the air supply device and the clamping device.
Preferably, the clamping device comprises:
the positioning base is fixedly arranged on the impactor testing device and is used for positioning the clamping device;
the clamping base is in sliding connection with the positioning base and is used for horizontally supporting the clamping oil cylinder;
the clamping block is arranged at the end part of the clamping oil cylinder and used for avoiding clamping damage of the clamping oil cylinder to the impactor to be tested;
the pushing lifting slide block is fixedly connected with the clamping base; and the clamping base is used for driving the clamping base to slide up and down along the positioning base.
Preferably, the clamping base is a U-shaped base, and two clamping cylinders respectively penetrate through two ends of the U-shaped base horizontally.
Preferably, the air supply device includes:
the upper end of the inner sleeve is provided with an air inlet and is used for being connected with an external air supply mechanism; the lower end of the device is provided with an air outlet which is used for being connected with an air inlet at the tail part of the impactor to be tested, and a conical sealing seat is arranged outside the air outlet;
the outer sleeve is integrally sleeved on the outer side of the inner sleeve, and a sealing gasket is further arranged at the bottom of the outer sleeve;
the telescopic component is arranged between the inner sleeve and the outer sleeve so that the inner sleeve and the outer sleeve can move relatively in a working state;
the adjusting part is arranged on the outer surface of the inner sleeve air inlet and is positioned on the outer side of the outer sleeve and used for fixing and adjusting the initial relative position between the inner sleeve and the outer sleeve.
Preferably, the telescopic component is a spring, a first annular boss is arranged on the outer side face of the inner sleeve, a second annular boss opposite to the first annular boss is arranged on the inner side face of the outer sleeve, and the spring is located between the first annular boss and the second annular boss.
The impactor testing device provided by the invention realizes the automatic operation flow of impactor testing, obviously saves labor cost, can realize large-scale operation, and is safe and reliable. The specific test process is as follows:
firstly, starting a driving device to push out a tray from an impactor testing device, and hoisting an impactor to be tested into the tray; the driving means is then operated to move it to the centre position of the gripping means.
And secondly, operating the driving device to enable the air supply device to slide downwards to be in butt joint with the air inlet of the impactor, and preparing for air supply.
And thirdly, operating the driving device to enable the clamping device to clamp the impactor in the horizontal direction, and simultaneously, operating the driving device to pressurize the backing plate in the tray to enable the backing plate to keep constant pressure in the whole testing process of the impactor.
And finally, opening a switch of the air supply device, connecting test air into the impactor to be tested, simultaneously operating the driving device to apply constant downward pressure to the air supply device and the clamping device, starting the testing work of the impactor, and vibrating and impacting the pressurizing base plate in the tray 6 by a drill bit at the front end of the impactor 3.
When the empty testing of the impacter is needed, the clamping device and the air supply device are enabled to slide upwards along the main frame at the same time only by operating the driving device, so that the impacter keeps a certain distance from the base plate in the tray, and then the empty testing of the impacter can be realized by starting the air supply device.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present invention, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.
FIG. 1 is a side view of an impactor testing device in accordance with an embodiment of the invention;
FIG. 2 is a front view of the impactor testing device of FIG. 1;
FIG. 3 is a top view of the clamping device of FIG. 1;
fig. 4 is a cross-sectional view of the air supply device of fig. 1.
Detailed Description
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.
The invention provides an impactor testing device which can realize the automatic operation flow of impactor testing.
Referring to fig. 1 and 2, fig. 1 is a side view of an impactor testing device according to an embodiment of the invention; fig. 2 is a front view of the impactor testing device of fig. 1.
In one embodiment, the present invention provides an impactor testing device comprising: a main frame 1, an air supply device 2, a clamping device 4, a tray 6 and a driving device. Wherein the main frame 1 is a fixed support arranged in the vertical direction, and a base arranged in the horizontal direction is also arranged at the bottom of the main frame generally and is used for arranging and installing the air supply device 2, the clamping device 4, the tray 6 and the driving device. The air supply device 2, the clamping device 4 and the tray 6 are sequentially arranged on the main frame 1 from top to bottom. The gas supply device 2 is used for supplying test gas to the impactor 3 to be tested; the clamping device 4 is used for clamping the impactor 3 to be tested, namely positioning in a working state; the relative distance between the air supply device 2 and the clamping device 4 is generally kept constant; the tray 6 is used for carrying the entering and exiting of the impactor 3 to be tested, and the pad on the tray 6 is specially used for bearing the pressure of the impactor 3 to be tested when the impactor 3 is hit for testing, so the pad is pressurized before the testing begins. In the working process of the above-mentioned impactor testing device, the air supply device 2 and the clamping device 4 need to be displaced in the vertical direction, and the tray 6 needs to be displaced in the horizontal direction, so that corresponding driving devices need to be arranged to drive and control the movements of the respective components.
The working process of the impactor testing device is as follows:
firstly, arranging an impactor 3 to be tested in place, specifically, firstly starting a driving device to push a tray 6 out of an impactor testing device so as to separate the impactor from the lower position of a clamping device 4, then hoisting the impactor 3 to be tested into the tray 6, and placing the impactor into the tray 6 above a backing plate; the driving means is then operated to move the impactor 3 to be tested in the tray 6 to the centre position of the holding means 4.
And secondly, operating the driving device to enable the air supply device 2 to be in butt joint with the air inlet at the tail part of the impactor 3, wherein the air supply device 2 is usually positioned at a higher position before the test work starts, so that the air supply device 2 is prevented from colliding with the air inlet at the tail part of the impactor 3 when the impactor 3 is in place, and the driving device is required to be operated to enable the air supply device 2 to slide downwards until the air supply device is in sealed connection with the air inlet of the impactor 3 after the impactor 3 is in place, so that air supply preparation is prepared.
And thirdly, operating the driving device to enable the clamping device 4 to clamp the impacter 3 in the horizontal direction, avoiding the impacter 3 from shaking or falling off in the testing process, and ensuring that the impacter 3 is positioned at the same height in the testing process.
Fourth, the driving means is operated to press the pad in the tray 6 while holding the impactor 3 so as to maintain a constant pressure throughout the testing of the impactor 3.
Finally, the switch of the air supply device 2 is turned on, the test air is connected into the to-be-tested impactor 3, meanwhile, the driving device is operated to apply constant downward pressure to the air supply device 2 and the clamping device 4, the testing work of the impactor 3 is started, and the drill bit at the front end of the impactor 3 performs vibration impact on the pressurizing base plate in the tray 6.
When the idle impact test of the impacter 3 is required, the driving device is only required to be operated to enable the clamping device 4 and the air supply device 2 to slide upwards along the main frame 1 at the same time, so that the impacter 3 is kept at a certain distance from the base plate in the tray 6, and then the idle impact test of the impacter can be realized by starting the air supply device.
After the work to be tested is completed, the switch of the air supply device 2 is closed, the driving device is operated to cancel the horizontal clamping of the clamping device 4 to the impactor 3, cancel the downward pressing of the clamping device 4 and cancel the pressing of the backing plate, then the driving device is operated to push out the tray 6 from the lower position of the clamping device 4, the impactor 3 to be tested is lifted out of the tray 6, the test work for the impactor 3 is completed completely, and then the tray 6 is restored to the original position to wait for the next test.
In a specific embodiment, the impactor testing device further comprises a righting device 5, which is fixedly arranged above the tray 6, and the two devices can be welded or connected through a bolt. The righting device 5 can move along with the tray 6 in the horizontal direction, and acts on the impactor 3 to be tested together to facilitate the entry and exit of the impactor. The function of the righting means 5 is to avoid tilting of the impactor 3 to be tested during the entry or exit of the following tray 6 from the testing device. Specifically, the centering device 5 may be two openable and closable half rings, and when the impactor 3 enters, the outer half ring is opened, and after the impactor 3 enters, the outer half ring is closed to fix the impactor 3 in the centering device 5. Of course, the setting of the centering device 5 may also have other manners, for example, the centering device 5 may be separately and horizontally set on a fixed position of the main frame 1, and specifically may be two parallel metal rods with a distance slightly larger than the outer diameter of the conventional impactor 3 to be tested.
In a specific embodiment, the driving device is a hydraulic driving device, and is convenient to operate and easy to control because of the fact that the hydraulic driving power is sufficient, and different pressure values can be set for impactors to be tested with different specifications so as to perform accurate impact test. Of course, other common driving means, such as a sprocket mechanism, etc., may be used.
The hydraulic drive device specifically includes: a driving cylinder 61 for driving the tray 6 and the centering device 5 to horizontally move between the lifting position of the impactor 3 to be tested and the center position of the clamping device 4; a clamping cylinder 41 for horizontally driving the clamping device 4 to clamp the impactor 3 to be tested; the lifting cylinder 46 is pushed in to vertically drive the air supply device 2 and the clamping device 4 to slide up and down along the main frame 1. Of course, the drive cylinder 61 and the thrust lift cylinder 46 may be subdivided into two separate cylinders for operation, but the arrangement is somewhat complex. The drive tray 6 and the righting device 5 have the same function, and the movement track is consistent, so that the drive tray can be driven by one drive oil cylinder 61 in general; simultaneously, the air supply device 2 and the clamping device 4 need to apply downward pressure to the impacter during the test, and the relative positions of the two devices are unchanged during the test, so that the two devices are driven by the same pushing lifting cylinder 46. Further, when the distance between the air supply device 2 and the clamping device 4 is not suitable to be changed when facing the impactor 3 to be tested with relatively large specification difference, an adjusting screw 7 can be arranged between the air supply device 2 and the clamping device 4, so that the relative distance between the air supply device and the clamping device can be adjusted manually.
Referring to fig. 3, fig. 3 is a top view of the clamping device in fig. 1.
In a specific embodiment, the clamping device 4 in the impactor testing device specifically includes a positioning base 45 and a clamping base 42, and a pushing lifting slider 44 is fixedly disposed at the bottom of the clamping base 42. The positioning base 45 is vertically disposed in the impactor testing device, and its outer end is in contact with the clamping base 42, and the clamping base 42 can slide up and down along the positioning base 45, so that the positioning base 45 can position the clamping base 42. Meanwhile, the inner end of the positioning base 45 can be fixedly connected with the main frame 1, can be welded or can be connected with a screw. The clamping base 42 is horizontally arranged on the positioning base 45 and is used for clamping the impactor 3 to be tested.
In one embodiment, the clamping base 42 is a U-shaped clamping base with its open end facing outward and one end of the U-shaped bottom is in contact with the positioning base 45. Since one end of the U-shaped clamping base is an open end, the operation is more convenient when clamping the impacter 3, and the impacter 3 can be directly moved to the central part of the U-shaped clamping base from the open end. In the case of a U-shaped clamping base, two clamping cylinders 41 may be provided, which extend horizontally through the two ends of the U-shaped base, so as to clamp the impactor 3. Of course, the clamp cylinder 41 may be provided only in one direction of the clamp base 42, and when the impactor 3 is clamped, one side surface of the impactor 3 abuts against the inner side surface of the clamp base 42.
The pushing and lifting slider 44 is fixedly connected to the clamping base 42, and is used for driving the clamping base 42 to slide up and down along the positioning base 45. Specifically, the pushing lifting slide blocks 44 are fixedly arranged at the bottom of the clamping base 42, and provide upward or downward driving force for the pushing lifting slide blocks, and when the pushing lifting slide blocks are U-shaped clamping bases, two pushing lifting slide blocks 44 can be symmetrically arranged, so that the stress of the clamping base 42 is more balanced. The drive means for advancing the lift slider 44 is an advance lift cylinder 46.
In order to avoid damage to the impactor 3 to be tested in the clamping process, a clamping block 43 is further arranged at the end part of the clamping cylinder 41 (i.e. the contact surface with the impactor 3), and the clamping block 43 can be a steel body coated with rubber, so that the clamping function of the impactor 3 can be better realized, and damage to the outer surface of the impactor 3 can be avoided.
Referring to fig. 4, fig. 4 is a cross-sectional view of the air supply device of fig. 1.
In one embodiment, the air supply device 2 of the impactor testing device includes an inner sleeve 21, an outer sleeve 22, a telescopic component and an adjusting component. The inner sleeve 21 is an air inlet pipe, a through hole is formed in the middle of the inner sleeve 21 for air inlet, the inner sleeve 21 is normally vertically placed when in a test working state, and the upper end of the inner sleeve is an air inlet and is used for being connected with an external air supply mechanism; the lower end is an air outlet and is used for being connected with an air inlet at the tail part of the impactor 3 to be tested. The outside of the air outlet is also provided with a conical sealing seat 211; the conical sealing seat 211 is used for sealing between the air outlet and the air inlet at the tail part of the impactor 3 to be tested, and the radial radiuses of the conical sealing seat 211 on different axial heights are different, so that the conical sealing seat 211 is applicable to different thread specifications of impactors 3 of different models. The outer sleeve 22 is integrally sleeved on the outer side of the inner sleeve 21, and a sealing gasket 222 is further arranged at the bottom of the outer sleeve and is used for sealing the air supply device 2 and the air inlet hole of the impactor 3 for the second time, so that the sealing effect is greatly improved.
A telescopic member is provided between the inner sleeve 21 and the outer sleeve 22 to allow relative movement therebetween. In a specific embodiment, the telescopic component is a spring 23, a first annular boss is arranged on the outer side surface of the inner sleeve 21, a second annular boss opposite to the first annular boss is arranged on the inner side surface of the outer sleeve 22, and the spring 23 is arranged between the first annular boss and the second annular boss.
The adjusting component is arranged on the outer surface of the upper end of the inner sleeve 21 and is positioned on the outer side of the outer sleeve 22, and is used for fixing and adjusting the initial relative position between the inner sleeve 21 and the outer sleeve 22, namely the relative position of the inner sleeve 21 and the outer sleeve 22 before the test work starts. When the device is specifically used, when the model difference of the impacter 3 is large, the adjusting part should be properly adjusted up and down, so that the situation that the external sealing cannot be realized after the internal sealing is finished due to the fact that the distance between the conical sealing seat 211 and the sealing gasket 222 is too large is avoided, and meanwhile, the external sealing is started under the condition that the internal sealing cannot be finished due to the fact that the distance is too small is avoided. Specifically, the adjusting component may be a tightening nut 24, which is located outside the outer sleeve 22 and is in external threaded connection with the inner sleeve 21.
The air supply device 2 may be fixedly disposed on the main frame 1, and specifically, a connector fixing seat 25 may be disposed at an outer portion thereof and connected to the main frame 1, so that the pushing lifting cylinder 47 applies downward pressure to the same through the connector fixing seat 25. When the device starts to work, firstly, the air outlet of the inner sleeve 21 is placed into the inner hole of the air inlet at the tail part of the impactor 3 to be tested, downward pressure is applied to the air supply device 2 to drive the outer sleeve 22 to move downwards, meanwhile, the air inlet of the impactor 3 pushes the inner sleeve 21 to move upwards relatively, the upper surface of the air inlet is compressed with the conical sealing seat 11, and the spring 23 is slightly compressed. The inner sealing process is completed when the outer sleeve 22 moves down until the gasket 222 contacts the tail joint plane of the impactor 3. Then, the downward pressure is continuously applied to the above-described air supply device 2 until the gasket 222 is compressed against the plane of the tail joint of the impactor 3, and the seal between the air inlet hole and the air outlet hole is again reinforced, thereby completing the second seal, i.e., the outer seal. After both the inner and outer seals are achieved, the air supply device 2 is operated to begin testing the impactor 3.
In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other.
The impactor testing device provided by the invention is described in detail above. The principles and embodiments of the present invention have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the method of the present invention and its core ideas. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the invention can be made without departing from the principles of the invention and these modifications and adaptations are intended to be within the scope of the invention as defined in the following claims.
Claims (7)
1. An impactor testing device, comprising:
a main frame (1);
the air supply device (2) is arranged on the main frame (1) and can move up and down along the main frame, and is used for providing test air for the impactor (3) to be tested;
the clamping device (4) is positioned below the air supply device (2), is arranged on the main frame (1) and can move up and down along the main frame (1) synchronously with the air supply device (2) and is used for clamping the impactor (3) to be tested;
the tray (6) is arranged at the bottom of the main frame (1) and comprises a base plate for bearing the impactor (3) to be tested and the striking test thereof;
a driving device for providing power drive for the air supply device (2), the clamping device (4) and the tray (6);
the air supply device (2) includes:
the upper end of the inner sleeve (21) is provided with an air inlet and is used for being connected with an external air supply mechanism; the lower end of the device is provided with an air outlet which is used for being connected with an air inlet at the tail part of the impactor to be tested, and a conical sealing seat (211) is arranged outside the air outlet;
the outer sleeve (22) is integrally sleeved on the outer side of the inner sleeve, and a sealing gasket (222) is further arranged at the bottom of the outer sleeve;
the telescopic component is arranged between the inner sleeve (21) and the outer sleeve (22) so as to enable the inner sleeve and the outer sleeve to move relatively in a working state;
the adjusting part is arranged on the outer surface of the air inlet of the inner sleeve (21), is positioned on the outer side of the outer sleeve (22) and is used for fixing and adjusting the initial relative position between the inner sleeve (21) and the outer sleeve (22).
2. The impactor testing device of claim 1, further comprising:
the righting device (5) is fixedly arranged above the tray (6) and can horizontally move together with the tray, and is used for preventing the impactor (3) to be tested from toppling over in the moving process of the tray (6).
3. The impactor testing device of claim 2, wherein,
the driving device is a hydraulic driving device, and specifically comprises:
the driving oil cylinder (61) is used for driving the tray (6) and the righting device (5) to horizontally move between the hoisting position of the impactor (3) to be tested and the central position of the clamping device (4);
the clamping oil cylinder (41) is used for horizontally driving the clamping device (4) to clamp the impactor (3) to be tested;
and the pushing lifting oil cylinder (46) is used for vertically driving the air supply device (2) and the clamping device (4) to move up and down.
4. The impactor testing device of claim 3, further comprising:
the adjusting screw (7) is vertically arranged between the air supply device (2) and the clamping device (4) and is used for adjusting the relative distance between the air supply device and the clamping device.
5. The impactor testing device of claim 4, wherein,
the clamping device (4) comprises:
the positioning base (45) is fixedly arranged on the impactor testing device and is used for positioning the clamping device (4);
the clamping base (42) is slidably connected with the positioning base (45) and is used for horizontally supporting the clamping oil cylinder (41);
the clamping block (43) is arranged at the end part of the clamping oil cylinder (41) and is used for avoiding clamping damage of the clamping oil cylinder (41) to the impactor (3) to be tested;
a pushing lifting slide block (44) fixedly connected with the clamping base (42); is used for driving the clamping base (42) to slide up and down along the positioning base (45).
6. The impactor testing device of claim 5, wherein,
the clamping bases (42) are U-shaped bases, and two clamping cylinders (41) respectively penetrate through two ends of the U-shaped bases horizontally.
7. The impactor testing device of claim 1, wherein,
the telescopic part is a spring (23), a first annular boss is arranged on the outer side face of the inner sleeve, a second annular boss opposite to the first annular boss is arranged on the inner side face of the outer sleeve (22), and the spring is located between the first annular boss and the second annular boss.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811109641.5A CN108918134B (en) | 2018-09-21 | 2018-09-21 | Impactor testing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811109641.5A CN108918134B (en) | 2018-09-21 | 2018-09-21 | Impactor testing device |
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| CN108918134A CN108918134A (en) | 2018-11-30 |
| CN108918134B true CN108918134B (en) | 2024-04-09 |
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| CN201811109641.5A Active CN108918134B (en) | 2018-09-21 | 2018-09-21 | Impactor testing device |
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| CN114088441A (en) * | 2021-12-21 | 2022-02-25 | 长沙黑金刚实业有限公司 | Impactor experiment machine |
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| Title |
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| 冲击器性能测试方法研究现状与发展;黄志强;宋嘉宁;卜艳;杨景轩;谭力;;凿岩机械气动工具(04);3-7 * |
| 钻井用液动冲击器的参数测试系统;魏海菊, 岳媛媛, 曲庆利;石油仪器(第06期);24-26+61 * |
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| CN108918134A (en) | 2018-11-30 |
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