CN118032551A - Anchor rod drop hammer type radial impact test device and test method - Google Patents
Anchor rod drop hammer type radial impact test device and test method Download PDFInfo
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- CN118032551A CN118032551A CN202410430721.XA CN202410430721A CN118032551A CN 118032551 A CN118032551 A CN 118032551A CN 202410430721 A CN202410430721 A CN 202410430721A CN 118032551 A CN118032551 A CN 118032551A
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- 238000009863 impact test Methods 0.000 title claims abstract description 34
- 238000010998 test method Methods 0.000 title abstract description 5
- 238000012360 testing method Methods 0.000 claims abstract description 55
- 239000011435 rock Substances 0.000 claims description 12
- 238000006073 displacement reaction Methods 0.000 claims description 11
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 5
- 238000002474 experimental method Methods 0.000 claims description 4
- 238000005452 bending Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 238000011156 evaluation Methods 0.000 description 3
- 238000004873 anchoring Methods 0.000 description 2
- 230000008093 supporting effect Effects 0.000 description 2
- 238000010009 beating Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Abstract
The invention belongs to the technical field of radial impact tests of anchor rods, and particularly relates to a drop hammer type radial impact test device and a test method of an anchor rod. The test device comprises: a door-type frame; a lifting mechanism disposed in the door-type frame; the drop hammer assembly is arranged in the door-shaped frame in a guiding manner along the vertical direction; the anchor rod fixing frame is arranged below the drop hammer assembly, two ends of the anchor rod fixing frame are respectively a fixed end and a free end, and a rotating assembly is rotatably arranged on the free end of the anchor rod fixing frame; one end of the test anchor rod is fixed at the fixed end of the anchor rod fixing frame, and the other end of the test anchor rod, on which the mechanical sensor is arranged, is fixed on the rotating assembly; the test anchor rod is perpendicular to the falling direction of the drop hammer assembly. The test method is suitable for testing the radial impact mechanical properties of the anchor rod, can evaluate the performance and stability of the anchor rod under the impact action, and ensures that the mechanical sensor can accurately measure the stress state of the anchor rod all the time.
Description
Technical Field
The invention belongs to the technical field of radial impact tests of anchor rods, and particularly relates to a drop hammer type radial impact test device and a test method of an anchor rod.
Background
The existing drop hammer type experimental device for the anchor rod mechanics test is mainly used for testing the longitudinal impact performance of the anchor rod. The anchor rod is used as one of main supporting sections of underground engineering and faces to dynamic impact such as rock burst, earthquake, engineering blasting disturbance and the like, and in the process, the longitudinal mechanical property of the anchor rod is not only tested, but also important to the supporting effect of a tunnel (roadway) under the dynamic impact.
The test devices in the prior art are mainly focused on the longitudinal impact of the anchor rod or the dynamic shear impact of the anchor rod anchoring jointed rock mass. Therefore, how the experimental device performs a radial impact resistance mechanical experiment on the anchor rod material can more accurately evaluate the performance and stability of the anchor rod, and is a key point for solving the problem of impact toughness and strength of the tested anchor rod when the tested anchor rod is impacted by power.
And the radial impact can cause stress concentration at the anchoring position to deform the anchor rod, which can have a larger influence on the mechanical sensor arranged in the axial direction of the anchor rod, thereby seriously affecting the accuracy of the test result.
Accordingly, there is a need to provide an improved solution to the above-mentioned deficiencies of the prior art.
Disclosure of Invention
The invention aims to provide an anchor rod drop hammer type radial impact test device and a use method thereof, which at least solve the problems in the prior art.
In order to achieve the above object, the present invention provides the following technical solutions:
an anchor drop hammer type radial impact test device, the test device comprising:
the door-shaped frame is of a rectangular square frame structure;
a lifting mechanism disposed in the door-type frame;
The drop hammer assembly is arranged in the door-shaped frame in a guiding manner along the vertical direction, and is lifted by the lifting mechanism to be released after being lifted in place;
the anchor rod fixing frame is arranged below the drop hammer assembly, two ends of the anchor rod fixing frame are respectively a fixed end and a free end, and a rotating assembly is rotatably arranged on the free end of the anchor rod fixing frame;
One end of the test anchor rod is fixed at the fixed end of the anchor rod fixing frame, and the other end of the test anchor rod, on which the mechanical sensor is arranged, is fixed on the rotating assembly; the test anchor rod is perpendicular to the falling direction of the drop hammer assembly.
In the above-mentioned anchor rod drop hammer type radial impact test device, preferably, the rotating assembly includes a rotating shaft and a rotating frame, and the rotating shaft is fixedly arranged at the free end of the anchor rod fixing frame.
According to the anchor rod drop hammer type radial impact test device, preferably, one end of the rotating frame is hinged to the rotating shaft, one end, far away from the rotating shaft, of the rotating frame is provided with the sensor base, one end of the test anchor rod penetrates through the sensor base, and the mechanical sensor, the gasket, the clamp and the clamping piece are sequentially installed on the test anchor rod.
In the above-mentioned rock bolt drop hammer type radial impact test device, preferably, the drop hammer assembly includes a hammer body and a hammer head, wherein the hammer head is arranged below the hammer body, and the hammer head is arranged downwards.
In the above-mentioned anchor rod drop hammer type radial impact test device, preferably, two guide rods are further disposed in the gate type frame, and the guide rods extend along the vertical direction;
Two sides of the hammer body are respectively provided with a guide groove, two guide rods are respectively positioned in the guide grooves at two sides of the hammer body, and the hammer body carries out displacement movement in the vertical direction along the guide rods.
In the above-described rock bolt drop hammer type radial impact test device, preferably, the guide bar is a square bar, and the guide groove is a square groove, so that the square groove guides along the square bar.
In the above-mentioned anchor rod drop hammer type radial impact test device, preferably, the lifting mechanism comprises a winch and a lifting assembly, the winch is connected with the lifting assembly through a steel strand, and the lifting assembly is driven to perform up-and-down displacement movement through the winch;
The lifting assembly is located above the drop hammer assembly and is used for lifting and releasing the drop hammer assembly.
In the anchor rod drop hammer type radial impact test device, preferably, the lifting assembly comprises an electromagnetic chuck and a chuck frame, wherein the electromagnetic chuck is arranged in the chuck frame, and the steel strand is connected with the chuck frame;
The electromagnetic chuck is used for sucking and releasing the drop hammer assembly.
According to the anchor rod drop hammer type radial impact test device, preferably, one guide groove is formed in each of two sides of the sucker frame, two guide rods are respectively located in the guide grooves in two sides of the sucker frame, and the sucker frame performs displacement motion in the vertical direction along the guide rods.
The application also provides an anchor rod drop hammer type radial impact test method, which uses the anchor rod drop hammer type radial impact test device, and comprises the following steps:
Step 1, determining the diameter of an experimental anchor rod according to experimental requirements, enabling one end of the experimental anchor rod to pass through a sensor base on a rotating frame, then installing a mechanical sensor on the sensor base, and installing and fixing a gasket clamp and a clamping piece on the end part of the experimental anchor rod; the test anchor rod is horizontally placed, the other end of the test anchor rod passes through the fixed end on the anchor rod fixing frame, and the clamp and the clamping piece are fixed at the other end of the test anchor rod, so that the test anchor rod is fixed on the anchor rod fixing frame;
step 2, firstly attaching the drop hammer assembly to the test anchor rod as much as possible, then starting a winch, and driving the drop hammer assembly to rise to the test set height through the lifting assembly;
Step 3, controlling the electromagnetic chuck to be powered off, enabling the falling hammer assembly to freely fall under the guiding action of the guide rod, enabling the hammer head to fall and strike on the anchor rod, enabling the anchor rod to bend, enabling the rotating frame to rotate, and enabling the mechanical sensor to monitor stress conditions of the anchor rod in real time;
step 4, the lifting device falls down, and the electromagnetic chuck is controlled to be electrified so as to suck the falling hammer assembly on the lifting device;
And 5, circulating the steps 2-4 until the anchor rod is failed to be destroyed by impact, and ending the experiment.
The beneficial effects are that:
The drop hammer type radial impact test method for the anchor rod is suitable for testing the radial impact mechanical characteristics of the anchor rod, can evaluate the performance and stability of the anchor rod under the impact action, and the rotating frame can adaptively rotate according to the bending of the anchor rod, so that the position of the mechanical sensor relative to the end part of the anchor rod is unchanged, the stress state of the anchor rod can be accurately measured all the time by the mechanical sensor, and a reliable basis is provided for the design and evaluation of the safety performance of the anchor rod under different working conditions.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application. Wherein:
FIG. 1 is a schematic diagram of a sample apparatus according to an embodiment of the present invention;
FIG. 2 is a schematic view of the initial positions of the anchor fixing support and the hammer head according to one embodiment of the present invention;
FIG. 3 is a schematic view of a rotating assembly according to an embodiment of the present invention;
Fig. 4 is a schematic view of a turning assembly according to an embodiment of the present invention following bending of the bolt.
In the figure: 1. a hoist; 2. a lifting assembly; 3. a hammer body; 4. a hammer head; 5. an anchor rod fixing frame; 6. a door-type frame; 7. a fixed end; 8. a free end; 9. testing the anchor rod; 10. a rotation shaft; 11. a rotating frame; 12. a sensor base; 13. a mechanical sensor; 14. a gasket; 15. a clamp; 16. and (5) clamping the sheet.
Detailed Description
The following description of the technical solutions in the embodiments of the present invention will be clear and complete, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which are derived by a person skilled in the art based on the embodiments of the invention, fall within the scope of protection of the invention.
In the description of the present invention, the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", etc. refer to the orientation or positional relationship based on that shown in the drawings, merely for convenience of description of the present invention and do not require that the present invention must be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. The terms "coupled" and "connected" as used herein are to be construed broadly and may be, for example, fixedly coupled or detachably coupled; either directly or indirectly through intermediate components, the specific meaning of the terms being understood by those of ordinary skill in the art as the case may be.
The invention will be described in detail below with reference to the drawings in connection with embodiments. It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other.
According to an embodiment of the present invention, as shown in fig. 1 to 4, the present invention provides an anchor drop hammer type radial impact test apparatus, the test apparatus comprising:
The door-shaped frame 6, the door-shaped frame 6 is rectangular square frame structure.
And a lifting mechanism provided in the gate frame 6.
The drop hammer assembly is arranged in the gate-type frame 6 along the vertical direction in a guiding way, and is lifted up and released in place by the lifting mechanism.
The anchor rod fixing frame 5, anchor rod fixing frame 5 sets up in the below that falls the hammer subassembly, and anchor rod fixing frame 5's both ends are stiff end 7 and free end 8 respectively, rotate on anchor rod fixing frame 5's free end 8 and be provided with rotating assembly.
One end of the test anchor rod 9 is fixed at the fixed end 7 of the anchor rod fixing frame 5, and the other end of the test anchor rod 9 provided with the mechanical sensor 13 is fixed on the rotating assembly; the test bolt 9 is perpendicular to the direction of fall of the drop hammer assembly.
In the test device, the drop hammer assembly drops along the vertical direction and is hammered on the sample anchor rod from the radial direction, so that the radial impact mechanical property test of the anchor rod is realized, the test device can be used for evaluating the performance and stability of the anchor rod under the impact action, and a reliable and effective test basis is provided for the subsequent design and safety performance evaluation of the anchor rod under different working conditions; meanwhile, after the anchor rod is subjected to radial impact to be bent and deformed, one end of the anchor rod mounted on the rotating assembly rotates at the anchor rod fixing frame 5 along with the rotating assembly, the mechanical sensor 13 mounted on the anchor rod is always fixed relative to the rotating end of the anchor rod, namely, the mechanical sensor 13 is always perpendicular to the axis of the rotating end of the anchor rod, so that the mechanical sensor 13 can always ensure measurement accuracy, and further more accurate mechanical parameters can be ensured to be obtained.
The rotating assembly comprises a rotating shaft 10 and a rotating frame 11, and the rotating shaft 10 is fixedly arranged at the free end 8 of the anchor rod fixing frame 5.
One end of the rotating frame 11 is hinged to the rotating shaft 10, one end, far away from the rotating shaft 10, of the rotating frame 11 is provided with a sensor base 12, one end of the test anchor rod 9 penetrates through the sensor base 12, and the mechanical sensor 13, the gasket 14, the clamp 15 and the clamping piece 16 are sequentially installed on the test anchor rod 9.
In one embodiment of the application, the mechanical sensor 13 is arranged on the sensor base 12, and one end of the test anchor rod 9, on which the mechanical sensor 13 is arranged, is fixed with the sensor base 12, namely the rotating frame 11 through the clamp 15 and the clamping piece 16; when the anchor rod is impacted and deformed, one end of the mechanical sensor 13 is arranged on the anchor rod and is driven by the rotating frame 11 to rotate around the rotating shaft 10, so that the mechanical sensor 13 is always perpendicular to the axis of the anchor rod, namely, the position of the mechanical sensor 13 relative to one end of the anchor rod is always unchanged, and the stress condition of the anchor rod can be accurately measured by the mechanical sensor 13 all the time when the anchor rod is subjected to radial bending deformation.
In the embodiment, the fixed end 7 of the anchor rod fixing frame 5 is provided with a perforation for the other end of the test anchor rod 9 to pass through, the other end of the test anchor rod 9 is fixed on the fixed end 7 of the anchor rod fixing frame 5 through a clamp 15 and a clamping piece 16,
The drop hammer assembly comprises a hammer body 3 and a hammer head 4, wherein the hammer head 4 is arranged below the hammer body 3, and the hammer head 4 is arranged downwards.
In one embodiment of the application, the hammer body 3 is of a frame type structure, the hammer body 3 of the frame type structure is perpendicular to the anchor rod, the anchor rod with the hammer head 4 facing downwards is arranged at the lower part of the hammer body 3, the end face of the hammer head 4 is in a circular arc shape, and the central axis of the circular arc-shaped end face is perpendicular to the anchor rod, so that the hammer head 4 can be more conveniently hit on the anchor rod when falling down.
Two guide rods are further arranged in the door-shaped frame 6, and extend in the vertical direction; two sides of the hammer body are respectively provided with a guide groove, two guide rods are respectively positioned in the guide grooves on two sides of the hammer body 3, and the hammer body 3 carries out displacement movement in the vertical direction along the guide rods.
In one embodiment of the application, the two sides of the hammer body 3 are respectively provided with a guide rod, so that the hammer body 3 can move up and down along the guide rods, and the falling hammer assembly is ensured to realize guide displacement; and two guide bars can also rotate when falling down in the present hammer body 3, can not take place to deflect when guaranteeing to fall the hammer subassembly and remove, and then can accurate beating when guaranteeing to fall the hammer subassembly and fall down on the stock.
The guide rod is a square rod, and the guide groove is a square groove, so that the square groove guides along the square rod.
In this embodiment, the guide bar is the square pole, and square pole and square groove cooperation direction can further prevent that hammer block 3 from taking place deflection motion when upper and lower direction is removed to guarantee that the drop hammer subassembly can be stable carry out displacement motion in vertical direction.
The lifting mechanism comprises a winch 1 and a lifting assembly 2, wherein the winch 1 is connected with the lifting assembly 2 through a steel strand, and the lifting assembly 2 is driven by the winch 1 to perform up-and-down displacement movement; the lifting assembly 2 is located above the drop hammer assembly, and the lifting assembly 2 is used to lift and release the drop hammer assembly.
In one embodiment of the application, the lifting assembly 2 is located between the two guide bars and above the drop hammer assembly; the hoist engine 1 is located the bottom one side of door frame 6, is provided with two at least fixed pulleys on the door frame 6, and two fixed pulleys are connected on lifting assembly 2 in the steel strand wires of hoist engine 1 to be convenient for more drive lifting assembly 2 and carry out the displacement motion from top to bottom.
The lifting assembly 2 comprises an electromagnetic chuck and a chuck frame, the electromagnetic chuck is arranged in the chuck frame, and the steel strand is connected with the chuck frame; the electromagnetic chuck is used for sucking and releasing the drop hammer assembly.
In one embodiment of the application, the electromagnetic chuck can absorb the drop hammer assembly when being electrified, and the lifting assembly 2 drives the drop hammer assembly to synchronously lift and displace at the moment; when the electromagnetic chuck is powered off, the drop hammer assembly is released, so that the drop hammer assembly falls down along the guide rod.
Two sides of the sucker frame are respectively provided with a guide groove, two guide rods are respectively positioned in the guide grooves at two sides of the sucker frame, and the sucker frame carries out displacement movement in the vertical direction along the guide rods.
In one embodiment of the application, the sucker frame performs guiding movement along the guide rod, so that the precise alignment of the lifting assembly 2 and the drop hammer assembly can be ensured, and the electromagnetic sucker in the lifting assembly 2 can conveniently suck the drop hammer assembly.
The application also provides an anchor rod drop hammer type radial impact test method, which uses the anchor rod drop hammer type radial impact test device, and comprises the following steps:
Step 1, determining the diameter of an experimental anchor rod according to experimental requirements, enabling one end of the experimental anchor rod to pass through a sensor base 12 on a rotating frame 11, then installing a mechanical sensor 13 on the sensor base 12, and installing and fixing a gasket 14 clamp 15 and a clamping piece 16 on the end part of the experimental anchor rod 9; the test anchor rod 9 is horizontally placed, the other end of the test anchor rod 9 passes through the fixed end 7 on the anchor rod fixing frame 5, and the clamp 15 and the clamping piece 16 are fixed at the other end of the test anchor rod 9, so that the test anchor rod 9 is fixed on the anchor rod fixing frame 5;
Step 2, firstly attaching the drop hammer assembly to the test anchor rod 9 as much as possible, then starting the winch 1, and driving the drop hammer assembly to rise to the test set height through the lifting assembly 2;
step 3, controlling the electromagnetic chuck to be powered off, enabling the falling hammer assembly to freely fall under the guiding action of the guide rod, enabling the hammer head 4 to fall and strike on the anchor rod, enabling the anchor rod to bend, enabling the rotating frame 11 to rotate, and enabling the mechanical sensor 13 to monitor stress conditions of the anchor rod in real time;
step 4, the lifting device falls down, and the electromagnetic chuck is controlled to be electrified so as to suck the falling hammer assembly on the lifting device;
And 5, circulating the steps 2-4 until the anchor rod is failed to be destroyed by impact, and ending the experiment.
In summary, the anchor rod drop hammer type radial impact test method is suitable for testing the mechanical properties of anchor rods in radial impact, can evaluate the performance and stability of the anchor rods under the impact action, and the rotating frame 11 can adaptively rotate according to the bending of the anchor rods, so that the position of the mechanical sensor 13 relative to the end parts of the anchor rods is unchanged, the stress state of the anchor rods can be accurately measured all the time by the mechanical sensor 13, and a reliable basis is provided for the subsequent design and evaluation of the safety performance of the anchor rods under different working conditions.
It is to be understood that the above description is intended to be illustrative, and that the embodiments of the present application are not limited thereto.
The foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the particular embodiments disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. An anchor rod drop hammer type radial impact test device, which is characterized in that the test device comprises:
the door-shaped frame is of a rectangular square frame structure;
a lifting mechanism disposed in the door-type frame;
The drop hammer assembly is arranged in the door-shaped frame in a guiding manner along the vertical direction, and is lifted by the lifting mechanism to be released after being lifted in place;
the anchor rod fixing frame is arranged below the drop hammer assembly, two ends of the anchor rod fixing frame are respectively a fixed end and a free end, and a rotating assembly is rotatably arranged on the free end of the anchor rod fixing frame;
One end of the test anchor rod is fixed at the fixed end of the anchor rod fixing frame, and the other end of the test anchor rod, on which the mechanical sensor is arranged, is fixed on the rotating assembly; the test anchor rod is perpendicular to the falling direction of the drop hammer assembly.
2. The rock bolt drop hammer type radial impact test device according to claim 1, wherein the rotating assembly comprises a rotating shaft and a rotating frame, and the rotating shaft is fixedly arranged at the free end of the rock bolt fixing frame.
3. The drop hammer type radial impact test device for the anchor rod according to claim 2, wherein one end of the rotating frame is hinged to the rotating shaft, a sensor base is arranged at one end, far away from the rotating shaft, of the rotating frame, one end of the test anchor rod penetrates through the sensor base, and a mechanical sensor, a gasket, a clamp and a clamping piece are sequentially arranged on the test anchor rod.
4. A rockbolt drop hammer type radial impact test apparatus according to claim 3, wherein the drop hammer assembly includes a ram and a hammer head, the hammer head being disposed below the ram, the hammer head being disposed downwardly.
5. The rock bolt drop hammer type radial impact test device according to claim 4, wherein two guide rods are further arranged in the door-shaped frame, and the guide rods extend in the vertical direction;
Two sides of the hammer body are respectively provided with a guide groove, two guide rods are respectively positioned in the guide grooves at two sides of the hammer body, and the hammer body carries out displacement movement in the vertical direction along the guide rods.
6. The drop hammer type radial impact test apparatus of claim 5, wherein the guide bar is a square bar, and the guide groove is a square groove, so that the square groove guides along the square bar.
7. The rock bolt drop hammer type radial impact test device according to claim 5, wherein the lifting mechanism comprises a winch and a lifting assembly, the winch is connected with the lifting assembly through a steel strand, and the lifting assembly is driven to move up and down through the winch;
The lifting assembly is located above the drop hammer assembly and is used for lifting and releasing the drop hammer assembly.
8. The rock bolt drop hammer type radial impact test device according to claim 7, wherein the lifting assembly comprises an electromagnetic chuck and a chuck frame, the electromagnetic chuck is arranged in the chuck frame, and a steel strand is connected with the chuck frame;
The electromagnetic chuck is used for sucking and releasing the drop hammer assembly.
9. The rock bolt drop hammer type radial impact test device according to claim 8, wherein two sides of the sucker frame are respectively provided with a guide groove, the two guide rods are respectively positioned in the guide grooves at two sides of the sucker frame, and the sucker frame performs displacement movement in the vertical direction along the guide rods.
10. A method of rock bolt drop hammer type radial impact testing, characterized in that the method uses the rock bolt drop hammer type radial impact testing apparatus according to any one of claims 1 to 9, the method comprising:
Step 1, determining the diameter of an experimental anchor rod according to experimental requirements, enabling one end of the experimental anchor rod to pass through a sensor base on a rotating frame, then installing a mechanical sensor on the sensor base, and installing and fixing a gasket clamp and a clamping piece on the end part of the experimental anchor rod; the test anchor rod is horizontally placed, the other end of the test anchor rod passes through the fixed end on the anchor rod fixing frame, and the clamp and the clamping piece are fixed at the other end of the test anchor rod, so that the test anchor rod is fixed on the anchor rod fixing frame;
step 2, firstly attaching the drop hammer assembly to the test anchor rod as much as possible, then starting a winch, and driving the drop hammer assembly to rise to the test set height through the lifting assembly;
Step 3, controlling the electromagnetic chuck to be powered off, enabling the falling hammer assembly to freely fall under the guiding action of the guide rod, enabling the hammer head to fall and strike on the anchor rod, enabling the anchor rod to bend, enabling the rotating frame to rotate, and enabling the mechanical sensor to monitor stress conditions of the anchor rod in real time;
step 4, the lifting device falls down, and the electromagnetic chuck is controlled to be electrified so as to suck the falling hammer assembly on the lifting device;
And 5, circulating the steps 2-4 until the anchor rod is failed to be destroyed by impact, and ending the experiment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202410430721.XA CN118032551B (en) | 2024-04-11 | 2024-04-11 | Anchor rod drop hammer type radial impact test device and test method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202410430721.XA CN118032551B (en) | 2024-04-11 | 2024-04-11 | Anchor rod drop hammer type radial impact test device and test method |
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| CN118032551A true CN118032551A (en) | 2024-05-14 |
| CN118032551B CN118032551B (en) | 2024-06-18 |
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| JP6242466B1 (en) * | 2016-11-22 | 2017-12-06 | 株式会社オーク | Penetration testing machine for pile holes |
| KR101850877B1 (en) * | 2016-10-31 | 2018-05-31 | 원상연 | Drop impact test equipment |
| CN211824956U (en) * | 2020-05-26 | 2020-10-30 | 中国矿业大学(北京) | Novel drop hammer impact test device applied to large-deformation anchor rod |
| CN112798212A (en) * | 2021-02-03 | 2021-05-14 | 中煤科工开采研究院有限公司 | Anchor rod axial impact test bed and test method |
| CN114323966A (en) * | 2022-03-11 | 2022-04-12 | 中国矿业大学(北京) | Comprehensive mechanical property test system and method for underground engineering anchoring material |
| CN114544392A (en) * | 2022-01-26 | 2022-05-27 | 中国矿业大学(北京) | Dynamic and static combined loading anchor rod and anchor cable shear test system |
-
2024
- 2024-04-11 CN CN202410430721.XA patent/CN118032551B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101850877B1 (en) * | 2016-10-31 | 2018-05-31 | 원상연 | Drop impact test equipment |
| JP6242466B1 (en) * | 2016-11-22 | 2017-12-06 | 株式会社オーク | Penetration testing machine for pile holes |
| CN211824956U (en) * | 2020-05-26 | 2020-10-30 | 中国矿业大学(北京) | Novel drop hammer impact test device applied to large-deformation anchor rod |
| CN112798212A (en) * | 2021-02-03 | 2021-05-14 | 中煤科工开采研究院有限公司 | Anchor rod axial impact test bed and test method |
| CN114544392A (en) * | 2022-01-26 | 2022-05-27 | 中国矿业大学(北京) | Dynamic and static combined loading anchor rod and anchor cable shear test system |
| CN114323966A (en) * | 2022-03-11 | 2022-04-12 | 中国矿业大学(北京) | Comprehensive mechanical property test system and method for underground engineering anchoring material |
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