CN219977731U - Impact-resistant puncture tester for safety helmet - Google Patents
Impact-resistant puncture tester for safety helmet Download PDFInfo
- Publication number
- CN219977731U CN219977731U CN202321357959.1U CN202321357959U CN219977731U CN 219977731 U CN219977731 U CN 219977731U CN 202321357959 U CN202321357959 U CN 202321357959U CN 219977731 U CN219977731 U CN 219977731U
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- rack
- fixedly connected
- safety helmet
- base
- transmission shaft
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- 230000005540 biological transmission Effects 0.000 claims abstract description 51
- 230000000670 limiting effect Effects 0.000 claims abstract description 28
- 238000010521 absorption reaction Methods 0.000 description 11
- 230000000694 effects Effects 0.000 description 9
- 238000012360 testing method Methods 0.000 description 7
- 230000002301 combined effect Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
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Abstract
The utility model belongs to the field of impact-resistant puncture testers of safety helmets, in particular to an impact-resistant puncture tester of a safety helmets, which comprises a base, wherein a rack is arranged at the top end of the base, and an adjusting mechanism is arranged between the base and the rack; the adjusting mechanism comprises a front supporting frame, the front supporting frame is fixedly connected to the left side and the right side of the front side of the top end of the base, a storage groove is formed in the top end of the front supporting frame, an extension frame is sleeved in the storage groove, the top end of the extension frame is fixedly connected with the bottom end of the rack, the front side of the extension frame is provided with a movable groove, a rack is fixedly connected to the inner wall of the movable groove, the rack is meshed with a gear, a transmission shaft is fixedly connected to the front side of the gear, penetrates through the front supporting frame and extends to the outer side of the front supporting frame, and a limiting assembly and a linkage assembly are arranged on the outer side of the transmission shaft; through adjustment mechanism's structural design, realize the function of adjusting the height of rack.
Description
Technical Field
The utility model relates to the field of impact-resistant puncture testers of safety helmets, in particular to an impact-resistant puncture tester of a safety helmet.
Background
The utility model provides a safety helmet is able to bear or endure impact puncture tester is a device that is used for detecting safety helmet shock-resistant absorption performance and puncture performance, whether the protective performance of test safety helmet up to standard.
The existing safety helmet impact-resistant puncture tester mainly comprises a head die, a rack, a drop hammer or a puncture drop hammer, a force transducer and a base, wherein the rack is fixedly connected to the top end of the base, the head die is fixedly connected to the center position of the base and used for placing and testing the safety helmet, the drop hammer or the puncture drop hammer is hung at the center position of the bottom end of the rack and corresponds to the position of the safety helmet, the drop hammer is controlled by the rack to fall, and the force transducer is arranged in the head die and used for detecting impact force so as to judge the protective performance of the safety helmet.
The existing impact-resistant puncture tester for the safety helmet detects the impact-resistant absorption performance and the puncture performance of the safety helmet at a fixed height, or can only finely adjust the height of a drop hammer through a rack, and when the impact-resistant absorption performance and the puncture performance of the safety helmet are to be detected at different heights, the impact-resistant puncture tester for the safety helmet with different heights of the rack is required to be used for testing, so that time and labor are wasted; therefore, a safety helmet impact puncture resistant tester is provided for the problems.
Disclosure of Invention
In order to make up for the defects of the prior art, the prior impact-resistant puncture tester for the safety helmet detects the impact-resistant absorption performance and the puncture performance of the safety helmet at a fixed height, or can only finely adjust the height of a drop hammer through a rack, and when the impact-resistant absorption performance and the puncture performance of the safety helmet are to be detected at different heights, the impact-resistant puncture tester for the safety helmet with different heights of the rack is required to be used for testing, so that the impact-resistant puncture tester for the safety helmet is time-consuming and labor-consuming.
The technical scheme adopted for solving the technical problems is as follows: the utility model relates to an impact-resistant puncture tester for a safety helmet, which comprises a base, wherein a rack is arranged at the top end of the base, and an adjusting mechanism is arranged between the base and the rack;
the utility model provides a support frame, including the support frame, support frame fixed connection in the left and right sides of base top front side before, accomodate the groove has been seted up on the top of support frame before, accomodate the inside cover in groove and be equipped with the extension frame, the bottom fixed connection of extension frame's top and rack, the activity groove has all been seted up to the front side of extension frame, fixedly connected with rack on the inner wall of activity groove, rack and gear engagement, the front side fixedly connected with transmission shaft of gear, the transmission shaft runs through the support frame before and extends to the outside of support frame before, the outside of transmission shaft is provided with spacing subassembly and linkage subassembly, the left and right sides of base top rear side all is provided with driven subassembly.
Preferably, the front end fixedly connected with knob of transmission shaft, the outside cover of knob is equipped with the antiskid cover, the antiskid cover is the rubber material, and the antiskid line has been seted up in the outside of antiskid cover.
Preferably, both sides of extension frame bottom all fixedly connected with slider, slider sliding connection is in the inside of spout, the spout is seted up in the both sides of accomodating the inslot wall.
Preferably, the limiting component comprises a thread sleeve, the thread sleeve is sleeved on the outer side of the transmission shaft, one side, close to the outer wall of the front support frame, of the thread sleeve is fixedly connected with the outer wall of the front support frame, and a nut is in threaded connection with the outer side of the thread sleeve.
Preferably, the linkage assembly comprises belt pulleys, the belt pulleys are fixedly connected to the positions, close to the front end, of the outer sides of the transmission shafts, and the transmission belts are wound on the outer sides of the two groups of belt pulleys.
Preferably, the driven component comprises a rear supporting frame, the left and right sides of rear supporting frame fixed connection in base top rear side, the inside cover of rear supporting frame is equipped with the driven lever, the top of driven lever and the bottom fixed connection of rack, the position department fixedly connected with stopper that rear supporting frame inner wall one side is close to the top, stopper sliding connection is in the inside of spacing groove, one side at the driven lever is seted up to the spacing groove.
The utility model has the advantages that:
1. according to the utility model, through the structural design of the adjusting mechanism, the function of adjusting the height of the rack is realized, the problems that the conventional safety helmet impact-resistant puncture tester detects the impact-resistant absorption performance and the puncture performance of the safety helmet at a fixed height in most cases, or the height of the drop hammer can be finely adjusted only through the rack, and when the impact-resistant absorption performance and the puncture performance of the safety helmet are to be detected at different heights, the safety helmet impact-resistant puncture tester with different heights of the rack is required to be used for testing, so that the time and the labor are wasted, and the safety helmet detection efficiency is improved;
2. according to the utility model, through the structural design of the linkage assembly, the two groups of gears can be driven to synchronously rotate by rotating any group of knobs, so that the height of the rack is adjusted, and the height of the rack is adjusted conveniently.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic overall perspective view of the present utility model;
FIG. 2 is a schematic side view of a cross-sectional perspective view of the present utility model;
FIG. 3 is an enlarged schematic view of the structure of FIG. 2A according to the present utility model;
FIG. 4 is a schematic view of a front perspective cutaway structure of the present utility model;
FIG. 5 is an enlarged schematic view of the structure of FIG. 4B according to the present utility model;
FIG. 6 is a schematic elevational view in cross-section of the present utility model;
fig. 7 is an enlarged schematic view of the structure of fig. 6C according to the present utility model.
In the figure: 1. a base; 21. a front support; 22. a storage groove; 23. an extension rack; 24. a movable groove; 25. a rack; 26. a gear; 27. a transmission shaft; 28. a thread sleeve; 29. a nut; 31. a knob; 32. an anti-skid sleeve; 33. a belt pulley; 34. a drive belt; 35. a slide block; 36. a chute; 37. a rear support; 38. a driven rod; 39. a limiting block; 40. a limit groove; 4. a rack.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1-7, an impact-resistant puncture tester for a helmet comprises a base 1, wherein a rack 4 is arranged at the top end of the base 1, and an adjusting mechanism is arranged between the base 1 and the rack 4;
the adjusting mechanism comprises a front supporting frame 21, the front supporting frame 21 is fixedly connected to the left side and the right side of the front side of the top end of the base 1, a containing groove 22 is formed in the top end of the front supporting frame 21, an extension frame 23 is sleeved in the containing groove 22, the top end of the extension frame 23 is fixedly connected with the bottom end of a rack 4, movable grooves 24 are formed in the front side of the extension frame 23, racks 25 are fixedly connected to the inner walls of the movable grooves 24, the racks 25 are meshed with gears 26, a transmission shaft 27 is fixedly connected to the front side of the gears 26, the transmission shaft 27 penetrates through the front supporting frame 21 and extends to the outer side of the front supporting frame 21, a limiting assembly and a linkage assembly are arranged on the outer side of the transmission shaft 27, and driven assemblies are arranged on the left side and the right side of the rear side of the top end of the base 1;
during operation, the existing impact-resistant puncture tester for the safety helmet detects the impact-resistant absorption performance and the puncture performance of the safety helmet at a fixed height, or can only finely adjust the height of a drop hammer through a rack, and when the impact-resistant absorption performance and the puncture performance of the safety helmet are to be detected at different heights, the impact-resistant puncture tester for the safety helmet with different heights of the rack is required to be used for testing, so that time and labor are wasted, after the limit of the rotation of the transmission shaft 27 is relieved, the rotation knob 31 drives the gear 26 to synchronously rotate through the transmission shaft 27, the gear 26 drives the meshed rack 25 to move, the extension rack 23 synchronously moves along with the movement of the rack 25 and drives the fixedly connected rack 4 to synchronously move, and the effect of adjusting the height of the rack 4 is achieved.
Further, the front end of the transmission shaft 27 is fixedly connected with a knob 31, an anti-slip sleeve 32 is sleeved on the outer side of the knob 31, the anti-slip sleeve 32 is made of rubber, and anti-slip patterns are formed on the outer side of the anti-slip sleeve 32;
during operation, the effect of conveniently rotating the transmission shaft 27 is achieved through the action of the knob 31, the effect of increasing friction is achieved through the anti-slip sleeve 32 made of rubber materials and the anti-slip patterns formed in the outer side of the anti-slip sleeve 32, and slipping caused by too small friction during rotation of the knob 31 is avoided.
Further, both sides of the bottom end of the extension frame 23 are fixedly connected with a sliding block 35, the sliding block 35 is slidably connected inside a sliding groove 36, and the sliding groove 36 is opened at both sides of the inner wall of the accommodating groove 22;
when the rack 23 moves, the slide block 35 fixedly connected with the rack 23 also slides in the slide groove 36 synchronously, the combined action of the slide block 35 and the slide groove 36 limits the moving distance of the rack 23, the height adjusting range of the rack 4 is limited, and the rack 23 is prevented from falling out of the storage groove 22 due to excessive movement.
Further, the limiting component comprises a thread sleeve 28, the thread sleeve 28 is sleeved on the outer side of the transmission shaft 27, one side, close to the outer wall of the front support frame 21, of the thread sleeve 28 is fixedly connected with the outer wall of the front support frame 21, and a nut 29 is connected with the outer side of the thread sleeve 28 in a threaded manner;
when the height of the rack 4 is to be adjusted, the nut 29 is turned firstly to unscrew the nut 29, so that the threaded sleeve 28 is released from the state of being tightly attached to the outer side of the transmission shaft 27, at the moment, the friction force between the inner wall of the threaded sleeve 28 and the outer side of the transmission shaft 27 disappears, the effect of limiting the rotation of the transmission shaft 27 disappears, the height of the rack 4 can be adjusted at the moment, after the height of the rack 4 is adjusted to a designated position, the nut 29 is turned down again to tightly attach the inner wall of the threaded sleeve 28 to the outer side of the transmission shaft 27, the rotation of the transmission shaft 27 is limited through the friction force, the rack 4 is prevented from driving the extension frame 23 to automatically sink downwards under the action of gravity, the gear 26 reversely rotates, and the position of the rack 4 is fixed.
Further, the linkage assembly comprises belt pulleys 33, the belt pulleys 33 are fixedly connected to the positions, close to the front ends, of the outer sides of the transmission shafts 27, and transmission belts 34 are wound on the outer sides of the two groups of belt pulleys 33;
when the rack-type trolley is in operation, when any one group of transmission shafts 27 rotates, the belt pulleys 33 fixedly connected to the outer sides of the transmission shafts 27 synchronously rotate along with the rotation of the transmission shafts 27, and drive the transmission belts 34 wound on the outer sides of the transmission shafts to synchronously rotate, and further drive the other group of belt pulleys 33 to rotate, so that the two groups of transmission shafts 27 synchronously rotate, and further drive the gears 26 to rotate, so that the rack 25 drives the extension frame 23 to move, and the height of the trolley 4 is adjusted.
Further, the driven component comprises a rear supporting frame 37, the rear supporting frame 37 is fixedly connected to the left side and the right side of the rear side of the top end of the base 1, a driven rod 38 is sleeved in the rear supporting frame 37, the top end of the driven rod 38 is fixedly connected with the bottom end of the rack 4, a limiting block 39 is fixedly connected to the position, close to the top end, of one side of the inner wall of the rear supporting frame 37, the limiting block 39 is slidably connected to the inside of a limiting groove 40, and the limiting groove 40 is formed in one side of the driven rod 38;
during operation, when the rack 4 moves, the driven rod 38 fixedly connected with the rack is driven to move synchronously in the rear supporting frame 37, and when the driven rod 38 moves in the rear supporting frame 37, the limiting block 39 moves synchronously in the limiting groove 40, the effect of limiting the moving distance of the driven rod 38 is achieved through the combined effect of the limiting block 39 and the limiting groove 40, and the driven rod 38 is prevented from falling out of the rear supporting frame 37.
Working principle: when the height of the stand 4 is to be adjusted, the nut 29 is turned first to unscrew the nut 29, so that the threaded sleeve 28 is released from the state of being tightly attached to the outer side of the transmission shaft 27, at this time, the friction force between the inner wall of the threaded sleeve 28 and the outer side of the transmission shaft 27 disappears, the effect of limiting the rotation of the transmission shaft 27 disappears, the height of the stand 4 can be adjusted at this time, after the height of the stand 4 is adjusted to a designated position, the nut 29 is screwed again to tightly attach the inner wall of the threaded sleeve 28 to the outer side of the transmission shaft 27, the rotation of the transmission shaft 27 is limited through the friction force, the stand 4 is prevented from driving the extension frame 23 to automatically sink downwards under the action of gravity, the gear 26 reversely rotates, and the position of the stand 4 is fixed.
The existing safety helmet impact-resistant puncture tester detects the impact-resistant absorption performance and the puncture performance of the safety helmet at a fixed height, or can only finely adjust the height of a drop hammer through a rack, and when the impact-resistant absorption performance and the puncture performance of the safety helmet are to be detected at different heights, the safety helmet impact-resistant puncture tester with different heights of the rack is required to be used for testing, so that time and labor are wasted, after the limit of the rotation of the transmission shaft 27 is relieved, the rotation knob 31 drives the gear 26 to synchronously rotate through the transmission shaft 27, the gear 26 drives the meshed rack 25 to move, the extension rack 23 synchronously moves along with the movement of the rack 25 and drives the fixedly connected rack 4 to synchronously move, and the height of the rack 4 is adjusted.
When any one group of transmission shafts 27 rotates, the belt pulleys 33 fixedly connected to the outer sides of the transmission shafts 27 synchronously rotate along with the rotation of the transmission shafts 27, and drive the transmission belts 34 wound on the outer sides of the transmission shafts to synchronously rotate, and further drive the other group of belt pulleys 33 to rotate, so that the two groups of transmission shafts 27 synchronously rotate, and further drive the gears 26 to rotate, so that the racks 25 drive the extension frames 23 to move, and the effect of adjusting the height of the rack 4 is achieved.
When the extension frame 23 moves, the sliding block 35 fixedly connected with the extension frame 23 also synchronously slides in the sliding groove 36, the combined action of the sliding block 35 and the sliding groove 36 plays a role in limiting the moving distance of the extension frame 23 and limiting the height adjusting range of the stand 4, so that the extension frame 23 is prevented from falling out of the storage groove 22 due to excessive movement.
When the rack 4 moves, the driven rod 38 fixedly connected with the rack is driven to move synchronously in the rear supporting frame 37, and when the driven rod 38 moves in the rear supporting frame 37, the limiting block 39 moves synchronously in the limiting groove 40, the limiting effect on the moving distance of the driven rod 38 is achieved through the combined effect of the limiting block 39 and the limiting groove 40, and the driven rod 38 is prevented from falling out of the rear supporting frame 37.
The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims.
Claims (6)
1. The utility model provides a safety helmet puncture-resistant tester which characterized in that: the device comprises a base (1), wherein a rack (4) is arranged at the top end of the base (1), and an adjusting mechanism is arranged between the base (1) and the rack (4);
the utility model provides an adjusting mechanism includes preceding support frame (21), the left and right sides of preceding support frame (21) fixed connection in base (1) top front side, accomodate groove (22) have been seted up on the top of preceding support frame (21), the inside cover of accomodating groove (22) is equipped with extension frame (23), the bottom fixed connection of the top and rack (4) of extension frame (23), movable groove (24) have all been seted up to the front side of extension frame (23), fixedly connected with rack (25) on the inner wall of movable groove (24), rack (25) and gear (26) meshing, the front side fixedly connected with transmission shaft (27) of gear (26), transmission shaft (27) run through preceding support frame (21) and extend to the outside of preceding support frame (21), the outside of transmission shaft (27) is provided with spacing subassembly and linkage subassembly, the left and right sides of base (1) top rear side all is provided with driven subassembly.
2. The safety helmet impact puncture resistance tester according to claim 1, wherein: the anti-slip device is characterized in that the front end of the transmission shaft (27) is fixedly connected with a knob (31), an anti-slip sleeve (32) is sleeved on the outer side of the knob (31), the anti-slip sleeve (32) is made of rubber, and anti-slip patterns are formed in the outer side of the anti-slip sleeve (32).
3. The safety helmet impact puncture tester according to claim 2, wherein: both sides of extension frame (23) bottom all fixedly connected with slider (35), slider (35) sliding connection is in the inside of spout (36), the both sides at the inner wall of holding tank (22) are seted up to spout (36).
4. A crash-resistant puncture tester for a helmet according to claim 3, wherein: the limiting component comprises a thread sleeve (28), the thread sleeve (28) is sleeved on the outer side of the transmission shaft (27), one side, close to the outer wall of the front support frame (21), of the thread sleeve (28) is fixedly connected with the outer wall of the front support frame (21), and a nut (29) is connected with the outer side of the thread sleeve (28) in a threaded mode.
5. The safety helmet impact puncture tester according to claim 4, wherein: the linkage assembly comprises belt pulleys (33), the belt pulleys (33) are fixedly connected to the positions, close to the front ends, of the outer sides of the transmission shafts (27), and transmission belts (34) are wound on the outer sides of the two groups of belt pulleys (33).
6. The safety helmet impact puncture tester according to claim 5, wherein: the driven assembly comprises a rear supporting frame (37), the rear supporting frame (37) is fixedly connected to the left side and the right side of the rear side of the top end of the base (1), a driven rod (38) is sleeved in the rear supporting frame (37), the top end of the driven rod (38) is fixedly connected with the bottom end of the rack (4), a limiting block (39) is fixedly connected to the position, close to the top end, of one side of the inner wall of the rear supporting frame (37), the limiting block (39) is slidably connected to the inside of a limiting groove (40), and the limiting groove (40) is formed in one side of the driven rod (38).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321357959.1U CN219977731U (en) | 2023-05-30 | 2023-05-30 | Impact-resistant puncture tester for safety helmet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321357959.1U CN219977731U (en) | 2023-05-30 | 2023-05-30 | Impact-resistant puncture tester for safety helmet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219977731U true CN219977731U (en) | 2023-11-07 |
Family
ID=88581932
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321357959.1U Active CN219977731U (en) | 2023-05-30 | 2023-05-30 | Impact-resistant puncture tester for safety helmet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219977731U (en) |
-
2023
- 2023-05-30 CN CN202321357959.1U patent/CN219977731U/en active Active
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