CN211291934U - Collapse rock fall impact force simulation test device - Google Patents
Collapse rock fall impact force simulation test device Download PDFInfo
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- CN211291934U CN211291934U CN202020275734.1U CN202020275734U CN211291934U CN 211291934 U CN211291934 U CN 211291934U CN 202020275734 U CN202020275734 U CN 202020275734U CN 211291934 U CN211291934 U CN 211291934U
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- base plate
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- test device
- rockfall
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- 238000012360 testing method Methods 0.000 title claims abstract description 33
- 239000011435 rock Substances 0.000 title claims abstract description 29
- 238000004088 simulation Methods 0.000 title claims abstract description 14
- 230000007246 mechanism Effects 0.000 claims abstract description 44
- 238000013519 translation Methods 0.000 claims abstract description 22
- 238000012546 transfer Methods 0.000 claims abstract description 16
- 238000011084 recovery Methods 0.000 claims abstract description 10
- 210000000078 claw Anatomy 0.000 claims abstract description 8
- 230000001681 protective effect Effects 0.000 claims abstract description 8
- 239000004575 stone Substances 0.000 claims 3
- 230000001105 regulatory effect Effects 0.000 claims 1
- 238000009863 impact test Methods 0.000 description 31
- 239000000758 substrate Substances 0.000 description 5
- 238000005381 potential energy Methods 0.000 description 3
- 239000002033 PVDF binder Substances 0.000 description 2
- 239000010408 film Substances 0.000 description 2
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000013517 stratification Methods 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 230000007723 transport mechanism Effects 0.000 description 1
Images
Abstract
The utility model discloses a rock fall impact force analogue test device collapses belongs to the civil engineering field. The collapse rockfall impact force simulation test device comprises a model platform, a rockfall transfer mechanism, a guide rail with an adjustable inclination angle and a first adjusting piece for adjusting the rail interval of the guide rail; a group of opposite side surfaces of the model platform are respectively provided with a recovery slope, and the other group of opposite side surfaces of the model platform are provided with a protective net; the rockfall transfer mechanism comprises two horizontal transfer mechanisms matched with the two recovery slopes respectively and a lifting translation mechanism matched with the horizontal transfer mechanisms, and mechanical claws matched with the guide rails are installed at the output ends of the lifting translation mechanisms.
Description
Technical Field
The utility model relates to a civil engineering field, concretely relates to rock fall impact force analogue test device collapses.
Background
The function of the collapse falling rocks is a great threat to the self safety of the bridge structure and the driving safety of vehicles on the bridge structure. In order to consider the influence of collapse rockfall on bridge operation and traffic safety, rockfall impact load needs to be simulated to research the impact resistance of bridge structures and vehicles. The existing impact force simulation test device is mainly divided into a drop hammer type and a pendulum bob type. The drop weight tester drops an impact test specimen from a specified height mainly with a drop weight of a prescribed mass and size to evaluate its impact resistance. Because the gravitational potential energy is converted into kinetic energy to realize impact by the free falling body motion of the drop hammers with different masses, the impact in different directions can be realized only by adjusting the angle between the test piece and the vertical direction, and the test piece is supported by a simply supported beam type. In actual engineering, the bridge pier is mostly built in the vertical direction, and the drop hammer type test device is obviously not suitable for impact test. The pendulum bob type test device obtains the absorption work of a sample by utilizing the mode that the difference between the potential energy before the pendulum bob impacts and the residual potential energy after the pendulum bob impacts is displayed on a dial, and the test device is suitable for precise and small samples in industries such as metallurgy, mechanical manufacturing and the like which do impact tests in large quantity due to the limitation of the length of the pendulum bob, and the impact energy of the test device is limited for the structure of the pier.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a rock fall impact force analogue test device collapses, it can be applied to the rock fall impact characteristic test that collapses of pier better not enough to among the prior art.
In order to achieve the purpose of the invention, the utility model adopts the technical scheme that:
the collapse rockfall impact force simulation test device comprises a model platform, a rockfall transfer mechanism, a guide rail with an adjustable inclination angle and a first adjusting piece for adjusting the rail interval of the guide rail; a group of opposite side surfaces of the model platform are respectively provided with a recovery slope, and the other group of opposite side surfaces of the model platform are provided with a protective net; the rockfall transfer mechanism comprises two horizontal transfer mechanisms matched with the two recovery slopes respectively and a lifting translation mechanism matched with the horizontal transfer mechanisms, and mechanical claws matched with the guide rails are installed at the output ends of the lifting translation mechanisms.
Further, for the kinetic energy of buffering falling rock impact test, horizontal transport mechanism is the belt conveying.
Furthermore, the lifting translation mechanism comprises a gantry translation unit and an electric hoist arranged on the gantry, wherein the gantry translation unit realizes translation movement, and the electric hoist realizes lifting movement.
Further, the guide rail comprises a first base plate, an angle adjusting device for adjusting the inclination angle of the first base plate and two baffle plates in a shape of '>', wherein one side of each baffle plate is used for abutting against the first base plate; the first adjusting piece comprises two mutually parallel waist-shaped holes formed in two ends of the first base plate, two first screws which are mutually parallel and matched with the waist-shaped holes are respectively arranged at two ends of one surface of the baffle facing the first base plate, and 1 nut and 2 nuts are respectively arranged on the two first screws which are positioned on the same end of the same baffle. So that the adjustment of the distance between the baffles (namely the track distance of the guide track) is realized by the combination of the kidney-shaped hole and the nut.
Furthermore, the angle adjusting device comprises a first support, a second support, two second screw rods and two third screw rods, the second screw rods and the third screw rods are respectively hinged with two ends of one surface of the first base plate, which is far away from the baffle plate, and two nuts are mounted on the second screw rods and the third screw rods; the first support is provided with through holes for the two second screws to pass through, and the second support is provided with through holes for the two third screws to pass through; the bottom of the second bracket is provided with a first roller. The second screw rod, the third screw rod and the nuts on the second screw rod and the third screw rod can be used for adjusting the inclination angle of the first base plate, changing the instantaneous height of the falling rock impact test piece away from the guide rail and further adjusting the impact position of the model in a large range.
Further, this rock fall impact force analogue test device collapses still includes the second base plate, and the second gyro wheel is installed to second base plate bottom, and the bottom of first support is installed on the second base plate, and first gyro wheel bottom is located the second base plate.
The utility model has the advantages that:
the model is placed based on the model platform; different impact slopes and angles are formed on the basis of the guide rail with the adjustable inclination angle, the rail space of the guide rail is adjusted on the basis of the first adjusting piece, and impact forces of different angles and different sizes of the model are formed by combining falling rock impact test pieces with different sizes or weights. And further, the falling rock impact force can be effectively simulated, so that the method is better applied to the collapse falling rock impact characteristic test of the bridge pier.
The protective net effectively restrains the path of the rockfall impact test piece after impacting the model along the guide rail, so that the rockfall impact test piece slides to the horizontal conveying mechanism along the recovery slope to prepare for the next impact test, and the potential safety hazard is reduced while the labor intensity of testers is reduced.
The arrangement of the horizontal conveying mechanism, the lifting translation mechanism and the mechanical claw improves the automatic stratification degree of the testing device, and the testing efficiency is improved while the labor intensity of testing personnel is reduced.
Drawings
FIG. 1 is a schematic front view of a simulation test device for an impact force of a collapsing falling rock in an embodiment;
FIG. 2 is a schematic top view of the lift-and-translation mechanism, gripper, horizontal transfer mechanism, and mold table of FIG. 1;
FIG. 3 is a schematic view of the structure of the guide rail of FIG. 1;
fig. 4 is an enlarged schematic view of part a of bitmap 3.
Wherein, 1, lifting the translation mechanism; 2. a gripper; 3. a baffle plate; 4. a model; 5. a model table; 6. a protective net; 7. recovering the slope; 8. a first bracket; 9. a horizontal transfer mechanism; 10. falling rocks impact the test piece; 11. A first roller; 12. a second bracket; 13. a third screw; 14. a second screw; 15. a first substrate; 16. A second substrate; 17. a first screw.
Detailed Description
The following detailed description of the present invention will be made with reference to the accompanying drawings so as to facilitate the understanding of the present invention by those skilled in the art. It should be understood that the embodiments described below are only some embodiments of the invention, and not all embodiments. All other embodiments obtained by a person skilled in the art without any inventive step, without departing from the spirit and scope of the present invention as defined and defined by the appended claims, fall within the scope of protection of the invention.
As shown in fig. 1 and 2, the simulation test device for the impact force of the collapsed falling rocks comprises a model table 5, a falling rocks transfer mechanism, a guide rail with an adjustable inclination angle and a first adjusting piece for adjusting the rail spacing of the guide rail; a group of opposite side surfaces of the model platform 5 are respectively provided with a recovery slope 7, and the other group of opposite side surfaces of the model platform 5 are provided with a protective net 6; the rockfall transfer mechanism comprises two horizontal conveying mechanisms 9 matched with the two recovery slopes 7 and a lifting translation mechanism 1 matched with the horizontal conveying mechanisms 9, and mechanical claws 2 matched with the guide rails are installed at the output ends of the lifting translation mechanisms 1.
During testing, the guide rails are adjusted to a required angle according to test requirements, the rail spacing of the guide rails is adjusted to a required spacing (the movement direction of the falling rock impact test piece 10 is restrained), and the model 4 is placed. Placing a rockfall impact test piece 10 at a corresponding horizontal conveying mechanism 9 right below the lifting translation mechanism 1, lifting the rockfall impact test piece 10 by using the lifting translation mechanism 1 and the mechanical claw 2, moving the rockfall impact test piece 10 to a guide rail right below the lifting translation mechanism 1, and then releasing the rockfall impact test piece 10. The falling rock impact test piece 10 freely rolls along the guide rail and continuously accelerates towards the set area of the model 4 under the action of gravity.
Regarding the collection of test data, the PVDF piezoelectric film sensor may be attached to a possible impacted area on the surface of the model 4, and the magnitude of the impact force is obtained based on the data collected by the PVDF piezoelectric film sensor, so as to complete the impact force simulation test, so as to facilitate the later analysis. It is prior art as to how to use data collected by piezoelectric thin film sensors to obtain data on stress.
After the impact test is finished, the rockfall impact test piece 10 returns to the initial position on the horizontal conveying mechanism 9 right below the lifting translation mechanism 1 along the recovery slope 7 and the horizontal conveying mechanism 9 to wait for the next impact test to start or be replaced.
The rockfall impact test piece 10 may be stopped by adding a protective net at the initial position. A correlation sensor may also be provided at the initial position to detect the arrival of the falling rock impact test piece 10, in conjunction with which the controller automatically controls the horizontal conveyance mechanism 9 to stop so that the falling rock impact test piece 10 stays at the initial position.
During implementation, the horizontal conveying mechanism 9 in the scheme is conveyed by a belt, and the lifting and translating mechanism 1 comprises a portal frame translating unit and an electric hoist arranged on the portal frame.
As shown in fig. 3 and 4, the guide rail comprises a first base plate 15, an angle adjusting device for adjusting the inclination angle of the first base plate 15, and two baffle plates 3 in a shape of ">", wherein one side of each baffle plate 3 is used for abutting against the first base plate 15; the first adjusting piece comprises two mutually parallel waist-shaped holes formed in two ends of the first base plate 15, two mutually parallel first screw rods 17 matched with the waist-shaped holes are respectively arranged at two ends of one surface, facing the first base plate 15, of the baffle plate 3, and 1 nut and 2 nuts are respectively arranged on the two first screw rods 17 located at the same end of the same baffle plate 3.
When in use, as shown in fig. 3 and 4, the nut on the first screw 17 close to another baffle 3 of the two screws located at the same end of the same baffle 3 is located below the first substrate 15, and the two nuts on the other first screw 17 are located above and below the first substrate 15, respectively. The fixation of the baffle 3 is realized by the nut on the first screw rod 17 and the abutting of the baffle 3 side and the first base plate 15, and the adjustment of the distance between the baffles 3 (namely the track distance of the guide track) is realized by the combination of the kidney-shaped hole and the nut.
The angle formed by the ">" type baffle 3 itself may be an obtuse angle smaller than 180 ° or 90 ° as shown in fig. 4 (in the case of 90 °, nuts need to be attached to all the first screws 17 located above and below the first base plate 15). When 180 deg., the same spacing is made possible to accommodate falling rock impact test pieces 10 of more sizes. And a protective net can be arranged on one side of the baffle 3 far away from the first base plate 15, so that the advancing direction of the rockfall impact test piece 10 is further restrained, and potential safety hazards are reduced.
As shown in fig. 3 and 4, the angle adjusting device includes a first bracket 8, a second bracket 12, two second screws 14 and two third screws 13, the second screws 14 and the third screws 13 are respectively hinged to two ends of a first substrate 15, which is far away from the baffle 3, and two nuts are mounted on the second screws 14 and the third screws 13; the first bracket 8 is provided with through holes for two second screws 14 to pass through, and the second bracket 12 is provided with through holes for two third screws 13 to pass through; the bottom of the second bracket 12 is provided with a first roller 11. The second screw 14, the third screw 13 and the nuts thereon can be used for adjusting the inclination angle of the first base plate 15, and the instantaneous height of the falling rock impact test piece 10 away from the guide rail can be changed, so that the impact position of the model 4 can be adjusted in a large range.
As shown in fig. 3, the simulation test device for the impact force of the falling rocks during collapse further comprises a second base plate 16, a second roller is mounted at the bottom of the second base plate 16, the bottom of the first bracket 8 is mounted on the second base plate 16, and the bottom of the first roller 11 is located on the second base plate 16. The horizontal movement of the guide rail is realized by utilizing the second roller, so that the horizontal distance between the falling rock impact test piece 10 and the model 4 at the moment of leaving the guide rail is changed, and further more impact tests are realized.
As shown in fig. 2, the mechanical claw 2 is two, so that the impact test piece can be conveniently released for multiple times to carry out continuous rockfall impact tests.
To sum up, the utility model discloses it is experimental not only to be applicable to the falling rocks impact characteristic of collapsing of pier, still is applicable to the falling rocks impact test of vehicle and bridge floor. Aiming at the rockfall impact test of vehicles and bridge floors, when the rockfall vertical free falling body impact test is simulated, the model platform 5 is moved to the position right below the mechanical claw 2 after the second roller piece guide rail is moved away.
Claims (6)
1. A collapse rockfall impact force simulation test device is characterized by comprising a model platform (5), a rockfall transfer mechanism, a guide rail with an adjustable inclination angle and a first adjusting piece for adjusting the rail interval of the guide rail; a group of opposite side surfaces of the model platform (5) are respectively provided with a recovery slope (7), and the other group of opposite side surfaces of the model platform (5) are provided with a protective net (6); the rockfall transfer mechanism comprises two horizontal conveying mechanisms (9) matched with the two recovery slopes (7) and a lifting translation mechanism (1) matched with the horizontal conveying mechanisms (9), and mechanical claws (2) matched with the guide rails are installed at the output ends of the lifting translation mechanism (1).
2. The apparatus for simulating a falling rock impact force according to claim 1, wherein the horizontal transfer mechanism (9) is a belt transfer.
3. The collapse rock fall impact force simulation test device according to claim 1, wherein the lifting translation mechanism (1) comprises a gantry translation unit and an electric hoist mounted on the gantry translation unit.
4. A simulation test device for impact force of collapsing falling stones according to any one of claims 1-3, characterized in that the guide track comprises a first base plate (15), an angle adjusting device for adjusting the inclination angle of the first base plate (15) and two baffles (3) presenting a ">" shape, one side of the baffles (3) being used for abutting against the first base plate (15); first regulating part includes two waist type holes that are parallel to each other that first base plate (15) both ends set up, baffle (3) are provided with two first screw rods (17) that are parallel to each other respectively towards the both ends of the one side of first base plate (15), be located same baffle (3) with install 1 and 2 nuts on two first screw rods (17) of serving respectively.
5. The collapse falling stone impact force simulation test device according to claim 4, wherein the angle adjusting device comprises a first support (8), a second support (12), two second screws (14) and two third screws (13), the second screws (14) and the third screws (13) are respectively hinged with two ends of one surface of the first base plate (15) far away from the baffle (3), and two nuts are mounted on the second screws (14) and the third screws (13); through holes for two second screws (14) to pass through are formed in the first support (8), and through holes for two third screws (13) to pass through are formed in the second support (12); and a first roller (11) is arranged at the bottom of the second bracket (12).
6. A simulation test device for impact force of collapsing falling stones according to claim 5, characterized by further comprising a second base plate (16), wherein a second roller is mounted at the bottom of the second base plate (16), the bottom of the first bracket (8) is mounted on the second base plate (16), and the bottom of the first roller (11) is located on the second base plate (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020275734.1U CN211291934U (en) | 2020-03-09 | 2020-03-09 | Collapse rock fall impact force simulation test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020275734.1U CN211291934U (en) | 2020-03-09 | 2020-03-09 | Collapse rock fall impact force simulation test device |
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| CN211291934U true CN211291934U (en) | 2020-08-18 |
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| CN202020275734.1U Active CN211291934U (en) | 2020-03-09 | 2020-03-09 | Collapse rock fall impact force simulation test device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112924128A (en) * | 2021-01-31 | 2021-06-08 | 重庆科技学院 | Pier rolling stone impact model and impact force measuring method |
| CN113237626A (en) * | 2021-05-18 | 2021-08-10 | 山东金池重工股份有限公司 | Wear-resistant steel ball falling impact composite testing machine |
| CN114636539A (en) * | 2022-03-14 | 2022-06-17 | 重庆科技学院 | Pier rockfall impact device |
| CN114813034A (en) * | 2022-03-30 | 2022-07-29 | 武汉理工大学 | Oblique automatic magnetic control slamming water test device |
| CN115343011A (en) * | 2022-10-17 | 2022-11-15 | 四川省公路规划勘察设计研究院有限公司 | Side slope rockfall impact interception test device |
-
2020
- 2020-03-09 CN CN202020275734.1U patent/CN211291934U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112924128A (en) * | 2021-01-31 | 2021-06-08 | 重庆科技学院 | Pier rolling stone impact model and impact force measuring method |
| CN113237626A (en) * | 2021-05-18 | 2021-08-10 | 山东金池重工股份有限公司 | Wear-resistant steel ball falling impact composite testing machine |
| CN114636539A (en) * | 2022-03-14 | 2022-06-17 | 重庆科技学院 | Pier rockfall impact device |
| CN114813034A (en) * | 2022-03-30 | 2022-07-29 | 武汉理工大学 | Oblique automatic magnetic control slamming water test device |
| CN115343011A (en) * | 2022-10-17 | 2022-11-15 | 四川省公路规划勘察设计研究院有限公司 | Side slope rockfall impact interception test device |
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Effective date of registration: 20230413 Address after: No. 10 Industrial Avenue, Industrial Agglomeration Zone, Yanshi District, Luoyang City, Henan Province, 471000 Patentee after: Henan Zhongqiao Bridge Technology Co.,Ltd. Address before: 610036 section 1, 2nd Ring Road North, Jinniu District, Chengdu City, Sichuan Province Patentee before: SOUTHWEST JIAOTONG University |