CN210513970U - Drop hammer impact test device - Google Patents
Drop hammer impact test device Download PDFInfo
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- CN210513970U CN210513970U CN201921343866.7U CN201921343866U CN210513970U CN 210513970 U CN210513970 U CN 210513970U CN 201921343866 U CN201921343866 U CN 201921343866U CN 210513970 U CN210513970 U CN 210513970U
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- hammer
- impact test
- cross beam
- guide
- hook
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Abstract
The utility model relates to a drop hammer impact test device, it includes: the lifting mechanism comprises a motor, a screw rod and a synchronous belt wheel which is arranged between the motor and the screw rod in a linkage manner, and the screw rod extends downwards; the cross beam is meshed with the screw rod; the hammer body is detachably connected to the cross beam; an energy storage mechanism comprising a spring disposed above the hammer body; the unhooking mechanism comprises a hook claw which is rotatably arranged with the cross beam, a hook which is arranged on the hammer body and a cylinder which is used for driving the hook claw to rotate, and at least a combination state and a separation state are arranged between the hook claw and the hook. The stroke of the hammer body is shortened.
Description
Technical Field
The utility model relates to a drop hammer impact test device for detect the anti striking performance of sample.
Background
The drop weight impact test is a test in which a weight is dropped onto a sample (sheet, film, product) from different heights, and the relationship between the drop height and the sample destruction rate is determined. Current drop hammer impact test device, the weight is usually connected by the haulage rope, after drawing the weight to a take the altitude by the haulage rope, the weight falls with the free fall mode, consequently need change the high or the quality of weight and change the impact energy to the sample, and drop hammer impact test device can not make too high, the weight height is too high just needs very long haulage rope, inconvenient operation, too high weight receives uncertain factor influence at the whereabouts in-process more easily in addition, it is possible to increase to relapse the experimental result deviation. The weight of the weight cannot be increased excessively due to the volume limitation.
The mode of increasing impact energy can be realized by increasing the initial falling speed of the heavy hammer except for lifting height or increasing weight, but the mode of adopting a traction rope cannot increase the initial falling speed of the heavy hammer. Therefore, the weight mechanism needs to be redesigned.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a hammer impact test device falls can increase the initial velocity of weight.
In order to achieve the above purpose, the utility model adopts the technical scheme that:
the utility model provides a hammer impact test device falls, it includes:
the lifting mechanism comprises a motor, a screw rod and a synchronous belt wheel which is arranged between the motor and the screw rod in a linkage manner, and the screw rod extends downwards;
the cross beam is meshed with the screw rod;
the hammer body is detachably connected to the cross beam;
an energy storage mechanism comprising a spring disposed above the hammer body;
the unhooking mechanism comprises a hook claw which is rotatably arranged with the cross beam, a hook which is arranged on the hammer body and a cylinder which is used for driving the hook claw to rotate, and at least a combination state and a separation state are arranged between the hook claw and the hook.
Optionally, two screw rods are provided, and two ends of the cross beam are respectively engaged with the screw rods.
Optionally, the lifting mechanism further comprises a guide rod, a guide hole matched with the guide rod is formed in the cross beam, and the guide rod is arranged in the guide hole in a penetrating mode.
Further, the guide rods are provided in two.
Furthermore, guide grooves are formed in two sides of the hammer body, and the guide rods are embedded into the guide grooves.
Optionally, a spring hole is formed in the cross beam, and the spring hole is used for the spring to pass through.
Optionally, it further comprises a sample placement platform, below which a buffer is arranged.
Optionally, the hammer further comprises a speed measuring mechanism, wherein the speed measuring mechanism comprises a light shielding sheet arranged on the hammer body, a photoelectric transmitter used for transmitting light rays and a receiver used for receiving the light rays.
Because of the application of the technical scheme, compared with the prior art, the utility model has the following advantages:
the utility model discloses a hammer impact test device falls, owing to be provided with hoist mechanism, the crossbeam, energy storage mechanism and unhook mechanism, motor drive lead screw among the hoist mechanism is rotatory, thereby drive the crossbeam rebound, the crossbeam rebound drives the hammer block and shifts up, the hammer block is at the spring of last removal in-process compression energy storage mechanism simultaneously, when making hammer block and crossbeam separation through unhook mechanism, the decurrent power is applyed for the hammer block to the spring of compressed, make the acceleration of hammer block whereabouts be greater than the acceleration of freely falling body, when spring and hammer block separation like this, the hammer block has great initial velocity, thereby the stroke of hammer block has been shortened.
Drawings
Some specific embodiments of the present invention will be described in detail hereinafter, by way of illustration and not by way of limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:
fig. 1 is a front view of a drop hammer impact test apparatus according to a preferred embodiment of the present invention;
FIG. 2 is a top view of the cross beam of FIG. 1;
FIG. 3 is a schematic perspective view of the ram of FIG. 1;
FIG. 4 is a schematic view of the unhooking mechanism of FIG. 1;
FIG. 5 is a schematic view of the velocity measurement mechanism;
FIG. 6 is a schematic view of the light-shielding sheet of FIG. 5;
wherein the reference numerals are as follows:
1. a lifting mechanism;
2. a cross beam;
3. an energy storage mechanism;
4. a unhooking mechanism;
5. a speed measuring mechanism;
6. a sample placement platform;
7. a motor;
8. a screw rod;
9. a hammer body;
10. a spring;
11. a hook claw;
12. hooking;
13. a cylinder;
14. a guide bar;
15. a guide hole;
16. a guide groove;
17. a guide block;
18. a spring hole;
19. a buffer;
20. a shading sheet;
21. an optoelectronic transmitter;
22. a receiver;
23. a mounting frame;
24. a threaded hole;
25. and (4) a groove.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.
As shown in fig. 1, the drop hammer impact test device includes a mounting bracket 23, and a lifting mechanism 1, a cross beam 2, an energy storage mechanism 3, a unhooking mechanism 4, and a hammer body 9 that are provided in the mounting bracket 23.
The lifting mechanism 1 is used for lifting the cross beam 2 and further lifting the hammer body 9. The energy storage mechanism 3 is used for storing energy during the ascending process of the hammer body 9, and acts on the hammer body 9 through releasing energy, so that the stored energy is added to the impact energy of the hammer body 9. The unhooking mechanism 4 is used for separating the hammer block 9 from the cross beam 2.
The lifting mechanism 1 comprises a motor 7, a screw 8 and a synchronous pulley (not shown in the figure). The synchronous belt wheel is arranged between the output end of the motor 7 and a rotating wheel (not shown in the figure) at the upper end of the screw rod 8 in a linkage manner. The motor 7 drives the screw rod 8 to rotate. The screw 8 extends downward.
The cross beam 2 is engaged with the screw rod 8, and as shown in fig. 2, a threaded hole 24 is formed in the cross beam 2. The screw 8 is fitted in the threaded hole 24. When the screw rod 8 rotates, the beam 2 is driven to ascend or descend.
The number of the screw rods 8 is two, correspondingly, two threaded holes 24 are respectively formed in two ends of the cross beam 2. This can drive the cross member 2 up and down more smoothly.
The energy storage mechanism 3 comprises springs 10, preferably two springs 10 are provided.
As shown in fig. 2, two spring holes 18 are opened through the beam 2, and the spring holes 18 are used for the springs 10 to pass through.
As shown in fig. 1, when the cross member 2 is raised, the spring 10 is pressed against the hammer block 9 through the cross member 2.
The hammer block 9 is detachably connected to the cross beam 2 by the unhooking mechanism 4.
As shown in fig. 3, a counterweight can be added to the upper end of the hammer 9 in a box to adjust the weight of the hammer 9.
As shown in fig. 4, which is a partial side view of fig. 1, the unhooking mechanism 4 includes a claw 11, a hook 12, and a cylinder 13. Wherein, the hook claw 11 is arranged with the beam 2 in a rotating way, the hook 12 is arranged at the upper end of the hammer body 9 (see figure 3), and the cylinder 13 is fixed on the beam 2. The cylinder 13 is used to drive the hook 11 to rotate, so that the hook 11 is separated from the hook 12, and the hammer block 9 is separated from the beam 2. Before the cylinder 13 drives the hook claw 11, the hook claw 11 is in a combined state with the hook 12.
As shown in fig. 1, when the unhooking mechanism 4 drives the hammer block 9 to separate from the beam 2. The initial power for pushing the hammer body 9 to fall is formed by the compression of the spring 10, the energy value of the impact test can be determined according to the compression amount of the spring 10, and the larger the compression amount of the spring is, the larger the formed impact energy is, and the hammer body 9 does not need to be set to be high. The hammer body 9 matched with the counterweight can generate a wide range of impact energy in a short stroke.
The lifting mechanism 1 further comprises a guide rod 14, a guide hole 15 (as shown in fig. 2) is formed in the cross beam 2, and the guide rod 14 penetrates into the guide hole 15, so that the cross beam 2 is well guided. Preferably, two guide rods 14 are provided and two corresponding guide holes 15 are provided, so that the guidance is more stable.
As shown in fig. 3, two guide blocks 17 are respectively disposed on two sides of the hammer body 9, a guide slot 16 is disposed on each guide block 17, and referring to fig. 1, the guide bar 14 is embedded in the guide slot 16. So that the guide rod 14 also has a guiding effect on the hammer block 9 when it falls. Of course, the guide block 17 may not be provided, and the guide grooves 16 may be formed directly on both sides of the hammer 9, for example.
As shown in FIG. 1, the bottom of the mounting frame 23 is provided with a sample placing platform 6 for placing a sample, and the device is used for testing the impact resistance of the sample. A buffer 19 is provided below the sample placement platform 6. After the hammer 9 impacts the tested sample, the hammer 9 continues to move downwards and impacts the buffer 19, the elastic component in the buffer 19 buffers the hammer 9, and residual energy after the impact of the hammer 9 is absorbed, so that the hammer 9 is prevented from impacting the tool clamp. The buffer 19 is similar in structure to an elevator buffer.
As shown in fig. 5, the device further comprises a speed measuring mechanism 5. The speed measuring mechanism 5 comprises a light shielding film 20, a photoelectric transmitter 21 and a receiver 22, similar to a photoelectric switch. The light shielding sheet 20 is disposed on the hammer 9 and moves downward with the hammer 9. The photoelectric transmitter 21 and the receiver 22 are disposed above the sample placement platform 6 at 10 ± 2 mm above the contact surface of the hammer 9 with the sample. The photoelectric transmitter 21 transmits laser light, and the receiver 22 receives the laser light. As shown in fig. 6, the light shielding plate 20 is provided with a groove 25, the distance between the grooves 25 is a fixed value, the time when the groove 25 passes through the laser spot can be calculated by a timer, and the speed when the hammer 9 passes through the position can be calculated by the distance between the grooves and the time when the groove 25 passes through the laser.
Because the speed measuring mechanism 5 of this example, need not to install the acceleration sensor among the traditional device, because acceleration sensor installs on the hammer block, and the hammer block is used for striking the test repeatedly, therefore require very high to acceleration sensor's reliability, easy damage, cause the cost to increase greatly. The speed measuring mechanism 5 of the embodiment avoids the trouble of mounting the sensor on the heavy hammer, the sensor does not need to receive repeated impact, and the calculated impact energy value is accurate and easy to correct.
The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and to implement the present invention, so as not to limit the protection scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.
Claims (8)
1. The utility model provides a drop hammer impact test device which characterized in that, it includes:
the lifting mechanism (1) comprises a motor (7), a screw rod (8) and a synchronous belt wheel which is arranged between the motor (7) and the screw rod (8) in a linkage manner, and the screw rod (8) extends downwards;
the cross beam (2), the said cross beam (2) engages with said feed screw (8);
the hammer body (9), the said hammer body (9) is connected to the said crossbeam (2) separably;
an energy storage mechanism (3), the energy storage mechanism (3) comprising a spring (10) disposed above the hammer block (9);
the unhooking mechanism (4) comprises a hook claw (11) rotatably arranged on the cross beam (2), a hook (12) arranged on the hammer body (9) and a cylinder (13) used for driving the hook claw (11) to rotate, and at least a combination state and a separation state are arranged between the hook claw (11) and the hook (12).
2. The drop hammer impact test apparatus according to claim 1, wherein: the number of the screw rods (8) is two, and two ends of the cross beam (2) are respectively meshed with the screw rods (8).
3. The drop hammer impact test apparatus according to claim 1, wherein: the lifting mechanism (1) further comprises a guide rod (14), a guide hole (15) matched with the guide rod (14) is formed in the cross beam (2), and the guide rod (14) penetrates through the guide hole (15).
4. The drop hammer impact test apparatus according to claim 3, wherein: the number of the guide rods (14) is two.
5. The drop hammer impact test apparatus according to claim 4, wherein: guide grooves (16) are formed in two sides of the hammer body (9), and the guide rods (14) are embedded into the guide grooves (16).
6. The drop hammer impact test apparatus according to claim 1, wherein: the cross beam (2) is provided with a spring hole (18), and the spring hole (18) is used for the spring (10) to penetrate through.
7. The drop hammer impact test apparatus according to claim 1, wherein: the device also comprises a sample placing platform (6), and a buffer (19) is arranged below the sample placing platform (6).
8. The drop hammer impact test apparatus according to claim 1, wherein: the hammer is characterized by further comprising a speed measuring mechanism (5), wherein the speed measuring mechanism (5) comprises a light shielding sheet (20) arranged on the hammer body (9), a photoelectric transmitter (21) used for transmitting light and a receiver (22) used for receiving the light.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921343866.7U CN210513970U (en) | 2019-08-19 | 2019-08-19 | Drop hammer impact test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921343866.7U CN210513970U (en) | 2019-08-19 | 2019-08-19 | Drop hammer impact test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210513970U true CN210513970U (en) | 2020-05-12 |
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ID=70590301
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921343866.7U Active CN210513970U (en) | 2019-08-19 | 2019-08-19 | Drop hammer impact test device |
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| CN (1) | CN210513970U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112345390A (en) * | 2020-10-30 | 2021-02-09 | 江苏君澄空间科技有限公司 | Test device for evaluating liquid oxygen sensitivity of material |
| CN112414816A (en) * | 2020-11-27 | 2021-02-26 | 广东国信工程监理有限公司 | Electric compaction instrument |
| CN114034545A (en) * | 2021-11-19 | 2022-02-11 | 中煤科工开采研究院有限公司 | Ejection device and drop hammer impact tester |
| CN114739839A (en) * | 2022-06-09 | 2022-07-12 | 深圳市骏鼎达新材料股份有限公司 | Test equipment for impact test and use method thereof |
-
2019
- 2019-08-19 CN CN201921343866.7U patent/CN210513970U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112345390A (en) * | 2020-10-30 | 2021-02-09 | 江苏君澄空间科技有限公司 | Test device for evaluating liquid oxygen sensitivity of material |
| CN112414816A (en) * | 2020-11-27 | 2021-02-26 | 广东国信工程监理有限公司 | Electric compaction instrument |
| CN114034545A (en) * | 2021-11-19 | 2022-02-11 | 中煤科工开采研究院有限公司 | Ejection device and drop hammer impact tester |
| CN114739839A (en) * | 2022-06-09 | 2022-07-12 | 深圳市骏鼎达新材料股份有限公司 | Test equipment for impact test and use method thereof |
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