CN114354114A - Detachable multifunctional drop hammer impact test device - Google Patents
Detachable multifunctional drop hammer impact test device Download PDFInfo
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- CN114354114A CN114354114A CN202111489235.8A CN202111489235A CN114354114A CN 114354114 A CN114354114 A CN 114354114A CN 202111489235 A CN202111489235 A CN 202111489235A CN 114354114 A CN114354114 A CN 114354114A
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- 238000009863 impact test Methods 0.000 title claims abstract description 28
- 238000012360 testing method Methods 0.000 claims abstract description 39
- 229910000831 Steel Inorganic materials 0.000 claims description 31
- 239000010959 steel Substances 0.000 claims description 31
- 230000008859 change Effects 0.000 claims description 4
- 230000003247 decreasing effect Effects 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000009434 installation Methods 0.000 abstract 1
- 230000006872 improvement Effects 0.000 description 7
- 238000003825 pressing Methods 0.000 description 7
- 230000009471 action Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
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- 230000000694 effects Effects 0.000 description 1
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- 230000009191 jumping Effects 0.000 description 1
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Abstract
The invention discloses a detachable multifunctional drop hammer impact test device, which is supported on a counter-force wall and a counter-force bearing platform which are vertical to each other, and comprises an impact hammer, a rigid guide rod, a detacher, a fixed support, a first support, a second support and a structural test piece, wherein the impact hammer is arranged on the counter-force wall; the fixed support, the first support and the second support are sequentially fixed on the counterforce wall from top to bottom; the upper end and the lower end of the rigid guide rod are respectively fixedly connected with the first bracket and the second bracket through bolts; the impact hammer comprises a balance weight and an impact head arranged below the balance weight; the impact hammer is suspended and positioned right above the structural test piece and can vertically slide along the rigid guide rod; the lower end of the unhooking device is connected with the impact hammer, and the upper end of the unhooking device is connected with a winch arranged on the fixed support through a sling. The invention has low manufacturing cost, is suitable for the impact test of most components such as beams, plates, columns and the like in engineering structures, can conveniently carry out the installation and the disassembly of the device and is worth popularizing.
Description
Technical Field
The invention relates to the technical field of impact test equipment for civil engineering structural members, in particular to a detachable multifunctional drop hammer impact test device.
Background
In recent years, accidental impact accidents of engineering structures are frequent, the effect of impact load on the structures is increasingly emphasized in protection engineering, structural engineering and national defense engineering, and the impact resistance of structural members becomes an important content in the field of engineering disaster prevention and reduction. Due to the particularity of the impact load and the complexity of the structural dynamic response, the simulation of the impact action by means of test equipment is often required.
The existing drop hammer impact test device mainly comprises a steel tower, a guide rail, an impact hammer and other components. Steel towers often require a large test site and also limit the type and size of the structural test piece. Meanwhile, the whole set of test device is complex to process and manufacture and high in manufacturing cost. Due to the limitation of test sites and expenses, the number of the test devices is small, and inconvenience is brought to the development of the impact test of the engineering structural member.
Disclosure of Invention
In order to solve the technical problems, the technical scheme provided by the invention is a detachable multifunctional drop hammer impact test device which comprises the following components in parts by weight:
a detachable multifunctional drop hammer impact test device is supported on a counter-force wall and a counter-force bearing platform which are perpendicular to each other, and comprises an impact hammer, a rigid guide rod, a detacher, a fixed support, a first support, a second support and a structural test piece;
the fixed support, the first support and the second support are sequentially fixed on the reaction wall from top to bottom;
the upper end and the lower end of the rigid guide rod are respectively fixedly connected with the first bracket and the second bracket through bolts;
the impact hammer comprises a balance weight and an impact head arranged below the balance weight; the impact hammer is suspended and positioned right above the structural test piece and can vertically slide along the rigid guide rod;
the lower end of the detacher is connected with the impact hammer, and the upper end of the detacher is connected with a winch arranged on the fixed support through a sling.
As an improvement, the root of the fixed bracket is fixedly connected with the counterforce wall through a high-strength anchor rod; the root of the first bracket is fixedly connected with the reaction wall through a high-strength anchor rod; and the root of the second support is fixedly connected with the reaction wall through a high-strength anchor rod.
As an improvement, a steel strand is arranged, and two ends of the steel strand are respectively connected with the front end edge of the fixed support and the reaction wall.
As an improvement, the cantilever end of the first bracket and the cantilever end of the second bracket are both provided with stiffening steel plates, and the stiffening steel plates are fixedly connected with the rigid guide rod through bolts.
As an improvement, the rigid guide rod is a chromium-plated solid steel bar; and a bolt hole is reserved on the side surface of the rigid guide rod and is matched with the stiffening steel plate.
As an improvement, a strain type force sensor is arranged between the impact head and the counterweight; the balance weight is a whole formed by connecting a plurality of layers of steel plates through a high-strength screw rod, and the change of the impact quality can be realized by increasing or decreasing the number of layers of the steel plates.
As an improvement, a U-shaped groove which is vertically communicated is arranged in the balance weight, and the rigid guide rod is inserted into the U-shaped groove.
As an improvement, the hook at the lower end of the detacher can be opened by pulling the pull rope arranged at the tail part of the detacher, so that the aim of separating the detacher from the impact hammer is fulfilled.
As a modification, the structural test piece is limited right below the impact hammer through a fixing component; the fixing assembly comprises a first support, a second support, a first pressing beam and a second pressing beam; the first support and the second support are fixed on the counter-force bearing platform through anchor bolts; the structural test piece is placed on the first support and the second support; the first pressing beam is fixedly arranged on the structural test piece and is fixedly connected with the first support through a bolt; and the second pressing beam is fixedly arranged on the structural test piece and is fixedly connected with the second support through a bolt.
Compared with the prior art, the invention has the advantages that:
(1) simple manufacture, cost are lower: this device carries out removable fixed with the help of existing laboratory counterforce wall, the support that will install jump bit hoisting device and rigidity guide arm, reduces the cost of manufacture, practices thrift the test place, and can improve the utilization ratio in laboratory.
(2) The applicability is strong: the device cancels the steel tower of the existing impact test device, so that the size and the type of the structural test piece are not limited by the distance between the supporting legs at the bottom of the steel tower; the requirements of most structural members (beams, plates, columns and the like) can be met by changing the type of the support, and the change of the impact position of the structural test piece can be realized by adjusting the position of the support.
Drawings
FIG. 1 is a schematic structural diagram of a detachable multifunctional drop hammer impact test device of the present invention.
Fig. 2 is a side view of a detachable multifunctional drop hammer impact test device of the present invention.
FIG. 3 is a partially enlarged view of an impact hammer in the detachable multifunctional drop hammer impact test device according to the present invention.
FIG. 4 is a partially enlarged view of a first bracket of the detachable multifunctional drop hammer impact testing device.
As shown in the figure: 1. a counterforce wall; 2. a counter-force bearing platform; 3. fixing a bracket; 4. a first bracket; 5. a second bracket; 6. a rigid guide rod; 7. a detacher; 8. an impact hammer; 9. an impact head; 10. balancing weight; 11. a sling; 12. a stiffened steel plate; 13. a winch; 14. steel strand wires; 15. a structural test piece; 16. a first support; 17. a second support; 18. a first press beam; 19. a second press beam; 20. a strain gauge force sensor; 21. a high-strength screw; 22. pulling a rope; 23. a U-shaped groove.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", "vertical", "circumferential", "radial", "axial", and the like, indicate orientations and positional relationships based on those shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
In the present invention, unless otherwise specifically stated or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the description of the present invention, "the first feature" and "the second feature" may include one or more of the features. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.
The detachable multifunctional drop hammer impact test device of the invention is further described in detail with reference to the accompanying drawings.
With reference to the attached drawings, fig. 1-4 show a detachable multifunctional drop hammer impact test device, which is supported on a reaction wall 1 and a reaction bearing platform 2 which are perpendicular to each other, and comprises an impact hammer 8, a rigid guide rod 6, a detacher 7, a fixed support 3, a first support 4, a second support 5 and a structural test piece 15;
the fixed bracket 3, the first bracket 4 and the second bracket 5 are sequentially fixed on the reaction wall 1 from top to bottom;
the upper end and the lower end of the rigid guide rod 6 are respectively fixedly connected with the first bracket 4 and the second bracket 5 through bolts;
the impact hammer 8 comprises a balance weight 10 and an impact head 9 arranged below the balance weight 10; the impact hammer 8 is suspended right above the structural test piece 15 and can vertically slide along the rigid guide rod 6;
the lower end of the detacher 7 is connected with the impact hammer 8, and the upper end of the detacher 7 is connected with a winch 13 arranged on the fixed bracket 3 through a sling 11.
In the embodiment, as shown in fig. 1 to 4, the root of the fixing bracket 3 is fixedly connected with the reaction wall 1 through a high-strength anchor rod; the root of the first bracket 4 is fixedly connected with the reaction wall 1 through a high-strength anchor rod; the root of the second bracket 5 is fixedly connected with the reaction wall 1 through a high-strength anchor rod.
In this embodiment, as shown in fig. 1 to 4, a steel strand 14 is provided, and both ends of the steel strand 14 are connected to the front end edge of the fixing bracket 3 and the reaction wall 1, respectively.
In this embodiment, as shown in fig. 1 to 4, the cantilever end of the first bracket 4 and the cantilever end of the second bracket 5 are both provided with a stiffening steel plate 12, and the stiffening steel plate 12 is fixedly connected to the rigid guide rod 6 by bolts.
In the embodiment, as shown in fig. 1 to 4, the rigid guide rod 6 is a chromium-plated solid steel bar; bolt holes are reserved on the side surfaces of the rigid guide rods 6 and matched with the stiffening steel plates 12.
In the present embodiment, as shown in fig. 1 to 4, a strain type force sensor 20 is disposed between the impact head 9 and the counterweight 10; by connecting the strain gauge force sensor 20 with data acquisition equipment, impact loads can be captured; the counterweight 10 is a whole formed by connecting a plurality of layers of steel plates through a high-strength screw 21, and the change of the impact quality can be realized by increasing or decreasing the number of layers of the steel plates.
In this embodiment, as shown in fig. 1 to 4, a vertically through U-shaped groove 23 is provided in the counterweight 10, and the rigid guide rod 6 is inserted into the U-shaped groove 23. The impact hammer 8 can slide along the rigid guide rod 6 along the vertical direction, so that derailment accidents are avoided.
In the present embodiment, as shown in fig. 1 to 4, the hook at the lower end of the detacher 7 is opened by pulling the cord 22 provided at the tail of the detacher 7, and the detacher 7 is separated from the hammer striker 8.
In the present embodiment, as shown in fig. 1 to 4, the structural test piece 15 is limited right below the impact hammer 8 by a fixing component; the fixing component comprises a first support 16, a second support 17, a first pressure beam 18 and a second pressure beam 19; the first support 16 and the second support 17 are fixed on the counter-force bearing platform 2 through anchor bolts; the structural test piece 15 is placed on the first support 16 and the second support 17; the first pressure beam 18 is fixedly arranged on the structural test piece 15 and is fixedly connected with the first support 16 through a bolt; the second pressing beam 19 is fixedly mounted on the structural test piece 15 and is fixedly connected with the second support 17 through a bolt. Through the limitation of the first pressing beam 18 and the second pressing beam 19 to the structure test piece 15, the structure test piece 15 can be effectively prevented from jumping after the impact hammer 8 falls and collides with the structure test piece 15, and the safety of the test is improved. Because the fixing component and the device main body are separately arranged and can be freely moved, the invention can meet the impact test requirements of various column-shaped and plate-shaped structural components by changing the specific structural forms of the first support 16 and the second support 17; meanwhile, the impact position can be conveniently adjusted according to test requirements by changing the position of the fixing component.
The working principle of the invention is as follows: in the invention, the whole device is mostly constructed in a detachable design, and can be quickly built and dismantled depending on a laboratory; after the construction is finished, the impact hammer 8 can be lifted to a preset height along the rigid guide rod 6 integrally through the matching of the winch 13, the sling 11 and the detacher 7; then, the hook below the detacher 7 is opened by pulling the pull rope 22 arranged on the detacher 7, the impact hammer 8 is separated from the detacher 7 and falls under the action of gravity to impact the structural test piece 15 below the impact hammer, and a primary impact test is completed; the weight of the impact hammer 8 can be adjusted by adjusting the number of the plurality of steel plates, and the impact position of the structural test piece 15 can be adjusted by adjusting the positions of the first support 16 and the second support 17.
The present invention and its embodiments have been described above, and the description is not intended to be limiting, and the drawings are only one embodiment of the present invention, and the actual structure is not limited thereto. In summary, those skilled in the art should appreciate that they can readily use the disclosed conception and specific embodiments as a basis for designing or modifying other structures for carrying out the same purposes of the present invention without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (9)
1. The utility model provides a can dismantle multi-functional drop hammer impact test device, the test device relies on locating on perpendicular counter-force wall (1) and counter-force cushion cap (2) each other on, its characterized in that: the test device comprises an impact hammer (8), a rigid guide rod (6), a detacher (7), a fixed support (3), a first support (4), a second support (5) and a structural test piece (15);
the fixed support (3), the first support (4) and the second support (5) are sequentially fixed on the reaction wall (1) from top to bottom;
the upper end and the lower end of the rigid guide rod (6) are respectively fixedly connected with the first bracket (4) and the second bracket (5) through bolts;
the impact hammer (8) comprises a balance weight (10) and an impact head (9) arranged below the balance weight (10); the impact hammer (8) is suspended and positioned right above the structural test piece (15) and can vertically slide along the rigid guide rod (6);
the lower end of the detacher (7) is connected with the impact hammer (8), and the upper end of the detacher (7) is connected with a winch (13) arranged on the fixed support (3) through a sling (11).
2. The detachable multifunctional drop hammer impact test device of claim 1, wherein: the root of the fixed support (3) is fixedly connected with the reaction wall (1) through a high-strength anchor rod; the root of the first bracket (4) is fixedly connected with the reaction wall (1) through a high-strength anchor rod; the root of the second bracket (5) is fixedly connected with the reaction wall (1) through a high-strength anchor rod.
3. The detachable multifunctional drop hammer impact test device of claim 2, wherein: the reaction wall is provided with a steel strand (14), and two ends of the steel strand (14) are respectively connected with the front end edge of the fixed support (3) and the reaction wall (1).
4. The detachable multifunctional drop hammer impact test device of claim 2, wherein: the cantilever end of the first support (4) and the cantilever end of the second support (5) are both provided with stiffening steel plates (12), and the stiffening steel plates (12) are fixedly connected with the rigid guide rod (6) through bolts.
5. The detachable multifunctional drop hammer impact test device of claim 4, wherein: the rigid guide rod (6) is a chromium-plated solid steel bar; and bolt holes are reserved on the side surfaces of the rigid guide rods (6) and are matched with the stiffening steel plates (12).
6. The detachable multifunctional drop hammer impact test device of claim 1, wherein: a strain type force sensor (20) is arranged between the impact head (9) and the counterweight; the counterweight (10) is a whole formed by connecting a plurality of layers of steel plates through a high-strength screw rod (21), and the change of the impact quality can be realized by increasing or decreasing the number of layers of the steel plates.
7. The detachable multifunctional drop hammer impact test device of claim 6, wherein: a U-shaped groove (23) which is vertically communicated is formed in the balance weight (10), and the rigid guide rod (6) is inserted into the U-shaped groove (23).
8. The detachable multifunctional drop hammer impact test device of claim 1, wherein: the hook at the lower end of the detacher (7) can be opened by pulling the pull rope (22) arranged at the tail part of the detacher (7), so that the aim of separating the detacher (7) from the impact hammer (8) is fulfilled.
9. The detachable multifunctional drop hammer impact test device of claim 1, wherein: the structural test piece (15) is limited right below the impact hammer (8) through a fixing component; the fixing assembly comprises a first support (16), a second support (17), a first pressure beam (18) and a second pressure beam (19); the first support (16) and the second support (17) are fixed on the counter-force bearing platform (2) through anchor bolts; the structural test piece (15) is placed on the first support (16) and the second support (17); the first pressure beam (18) is fixedly arranged on the structural test piece (15) and is fixedly connected with the first support (16) through a bolt; and the second pressure beam (19) is fixedly arranged on the structural test piece (15) and is fixedly connected with the second support (17) through a bolt.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111489235.8A CN114354114A (en) | 2021-12-08 | 2021-12-08 | Detachable multifunctional drop hammer impact test device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111489235.8A CN114354114A (en) | 2021-12-08 | 2021-12-08 | Detachable multifunctional drop hammer impact test device |
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| CN114354114A true CN114354114A (en) | 2022-04-15 |
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| CN202111489235.8A Pending CN114354114A (en) | 2021-12-08 | 2021-12-08 | Detachable multifunctional drop hammer impact test device |
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Citations (6)
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|---|---|---|---|---|
| CN104833596A (en) * | 2015-05-09 | 2015-08-12 | 青岛双凌科技设备有限公司 | Conveyor belt impact strength testing machine |
| CN104913893A (en) * | 2015-05-11 | 2015-09-16 | 中南大学 | Drop hammer impact test device used for simulating vehicle collision |
| CN108387461A (en) * | 2018-03-22 | 2018-08-10 | 东北大学 | A kind of drop hammer type dynamic impact testing machine and test method |
| CN109406123A (en) * | 2018-11-16 | 2019-03-01 | 青岛理工大学 | Sound state multifunction test servo loading system |
| CN110412206A (en) * | 2019-07-19 | 2019-11-05 | 中国矿业大学 | Fire test packaged type space self-balancing reaction frame system and its application method |
| CN210108669U (en) * | 2019-07-24 | 2020-02-21 | 江苏宏远科技工程有限公司 | Bridge impact test device |
-
2021
- 2021-12-08 CN CN202111489235.8A patent/CN114354114A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104833596A (en) * | 2015-05-09 | 2015-08-12 | 青岛双凌科技设备有限公司 | Conveyor belt impact strength testing machine |
| CN104913893A (en) * | 2015-05-11 | 2015-09-16 | 中南大学 | Drop hammer impact test device used for simulating vehicle collision |
| CN108387461A (en) * | 2018-03-22 | 2018-08-10 | 东北大学 | A kind of drop hammer type dynamic impact testing machine and test method |
| CN109406123A (en) * | 2018-11-16 | 2019-03-01 | 青岛理工大学 | Sound state multifunction test servo loading system |
| CN110412206A (en) * | 2019-07-19 | 2019-11-05 | 中国矿业大学 | Fire test packaged type space self-balancing reaction frame system and its application method |
| CN210108669U (en) * | 2019-07-24 | 2020-02-21 | 江苏宏远科技工程有限公司 | Bridge impact test device |
Non-Patent Citations (1)
| Title |
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| 吴志杰: ""冲击荷载作用下预应力钢绞线的力学响应研究"", 《中国优秀硕士学位论文全文数据库 工程科技II辑》, 15 May 2021 (2021-05-15), pages 27 - 35 * |
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