CN113804562B - Pendulum bob protection device - Google Patents
Pendulum bob protection device Download PDFInfo
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- CN113804562B CN113804562B CN202111104477.0A CN202111104477A CN113804562B CN 113804562 B CN113804562 B CN 113804562B CN 202111104477 A CN202111104477 A CN 202111104477A CN 113804562 B CN113804562 B CN 113804562B
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- pendulum
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- trigger plate
- base
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- 230000006835 compression Effects 0.000 claims description 6
- 238000007906 compression Methods 0.000 claims description 6
- 230000001681 protective effect Effects 0.000 claims description 4
- 230000006978 adaptation Effects 0.000 description 14
- 238000009863 impact test Methods 0.000 description 4
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/30—Investigating strength properties of solid materials by application of mechanical stress by applying a single impulsive force, e.g. by falling weight
- G01N3/303—Investigating strength properties of solid materials by application of mechanical stress by applying a single impulsive force, e.g. by falling weight generated only by free-falling weight
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0001—Type of application of the stress
- G01N2203/001—Impulsive
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0032—Generation of the force using mechanical means
- G01N2203/0039—Hammer or pendulum
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention relates to a pendulum bob protection device, wherein the upper part of a convex-shaped groove formed in the top of a pendulum bob base is connected with a pendulum bob through a cylinder, and the pendulum bob can rotate around the cylinder to fall down to finish the falling hammer impact action; the middle square groove formed in the middle of the pendulum base is connected with the protection sliding block through a guide block, and the middle square groove is connected with the rear end of the protection sliding block through a guide cylinder and a pressure spring; the upper part of the convex-shaped groove at the middle lower part of the pendulum base is connected with the trigger plate through a cylinder, the lower part square groove arranged at the lower part of the middle convex-shaped groove is connected with the trigger plate through two guide cylinders and a reset spring, and the protection sliding block is connected with the trigger plate through the square groove at the lower end and a triangular boss. The pressure spring can drive the protection slide block to move rapidly, so that the pendulum bob is prevented from carrying out secondary false impact on a sample, the sample is protected, the rapid protection and slide block reset can be realized through the spring pushing mechanism, the response is sensitive and rapid, the operation is simple and rapid, and the accuracy of the test is ensured.
Description
Technical Field
The invention relates to a pendulum impact test device, in particular to a pendulum protection device.
Background
In order to ensure the basic performance of the ship electronic equipment, a pendulum impact test needs to be carried out on the sample. When the ship electronic equipment pendulum impact test is carried out, the impact times are all tested according to a single time, after the single falling hammer impact, the pendulum can rebound to a certain height due to the impact action, so that the pendulum impacts a sample for a second time by mistake, and the accuracy of the test is affected.
Disclosure of Invention
The present invention is directed to a pendulum protection device that overcomes the above-mentioned drawbacks of the prior art.
The aim of the invention is achieved by the following technical scheme:
The pendulum bob protection device comprises a pendulum bob base, a pendulum bob, a protection sliding block, a trigger plate, a pressure spring and a reset spring, wherein the upper part of a convex-shaped groove formed in the top of the pendulum bob base is connected with the pendulum bob through a cylinder, and the pendulum bob can rotate around the cylinder to fall to finish the falling hammer impact action; the middle square groove formed in the middle of the pendulum base is connected with the protection slide block through the guide block, and the guide block can be clamped in the chute of the protection slide block to prevent the protection slide block from being separated from the guide block; the middle square groove is connected with the rear end of the protective slide block through a guide cylinder and a pressure spring; the upper part of a middle convex-shaped groove formed in the middle lower part of the pendulum base is connected with a trigger plate through a cylinder, and the trigger plate can rotate around the cylinder so as to enable the trigger plate to rotate and release the protection sliding block; the lower part square groove that middle part protruding font groove lower part was seted up is connected with the trigger plate through two guide cylinder and reset spring in, the protection slider is connected with the trigger plate through square groove and triangle-shaped boss of lower extreme.
Further, two guide cylinders matched with the pressure springs are arranged in the middle square groove, and a trapezoidal guide block and an inverted trapezoidal guide block matched with the trapezoidal sliding groove of the protection sliding block are respectively arranged on the upper portion and the lower portion of the middle square groove.
Further, the upper part of the middle convex-shaped groove is provided with a cylinder matched with the middle cylindrical through hole of the trigger plate, and the upper part of the middle convex-shaped groove and the lower part of the middle square groove of the pendulum base are provided with square through holes matched with the upper part of the trigger plate.
Further, square grooves matched with the lower parts of the trigger plates and the reset springs are formed in the lower parts of the middle convex-shaped grooves, two guide cylinders matched with the reset springs are arranged in the square grooves, and square through holes matched with the square trigger columns on the trigger plates are formed in the front ends of the square grooves.
Further, an upper trapezoidal sliding groove and a lower trapezoidal sliding groove which are matched with the upper trapezoidal guide block and the lower trapezoidal guide block of the square groove in the middle of the pendulum base are formed in the protective sliding block, and an inclined plane parallel to the pendulum rod surface is formed in the inclined upper side of the protective sliding block.
Further, a square boss matched with the pendulum hammer head is arranged on the right side of the lower part of the pendulum base; the left side of the lower part of the pendulum base is provided with a sample mounting plate.
Further, two circular pressure spring clamping grooves matched with the pressure springs are formed in the rear side of the protection sliding block, one end of each pressure spring is sleeved on the guide cylinder and fixedly connected with the pendulum base, the other end of each pressure spring is fixedly connected with the two circular pressure spring clamping grooves in the rear end of the protection sliding block, the pressure springs are in a compressed state, and when the pressure springs fall down, the pressure springs are unlocked and push the protection sliding block to slide rapidly.
Further, the square groove has been seted up to protection slider downside, and square groove inside is provided with and is triangle-shaped boss with the cross-section that trigger plate upper portion cross-section was triangle-shaped buckle looks adaptation, before the action of drop hammer, the inside triangle-shaped boss of protection slider square groove is connected with the buckle cooperation contact on trigger plate upper portion, and pressure spring is in compression state, and after the action of drop hammer, the inside triangle-shaped boss of protection slider square groove is separated with the buckle on trigger plate upper portion, and pressure spring unblock and promote the protection slider slip in order to block the secondary mistake impact of pendulum.
Further, the trigger plate is a three-part stepped plate; the upper part of the trigger plate is provided with a triangular buckle with a cross section matched with the cross section of the square groove at the lower side of the protection slider, wherein the cross section of the triangular buckle is provided with a triangular boss; the middle part of the trigger plate is provided with a cylindrical through hole matched with the cylindrical body at the upper part of the middle convex-shaped groove of the pendulum base; the front side of the lower part of the trigger plate is provided with a square trigger post which is matched with a square through hole of a square groove at the middle lower part of the pendulum base; two circular pressure spring clamping grooves matched with a reset spring are formed in the rear side of the lower portion of a trigger plate of the spring pushing mechanism, one end of the reset spring is sleeved on the guide cylinder and fixedly connected with the square groove at the middle lower portion of the pendulum base, the other end of the reset spring is in contact connection with the two circular pressure spring clamping grooves at the rear end of the trigger plate, when a pendulum is dropped, a pendulum rod contacts a trigger post, the trigger plate extrudes and compresses the reset spring, the trigger plate rotates around the cylinder by a certain angle, a buckle at the upper portion of the trigger plate is separated from a triangular boss inside the square groove of the protection slider, and the pressure spring unlocks and pushes the protection slider to slide rapidly.
Further, a cylindrical through hole matched with the cylindrical body at the upper part of the convex-shaped groove of the pendulum base is formed in the tail part of the pendulum; the hammer head of the pendulum bob is provided with a hammer head surface parallel to the square boss surface on the right side of the lower part of the pendulum bob base.
Compared with the prior art, the invention has the following beneficial effects:
1) The pressure spring can drive the protection sliding block to move rapidly, so that the pendulum bob is prevented from carrying out secondary false impact on the sample, the sample is protected, the whole protection action has good working stability, adverse effects on the pendulum bob underframe and the sample are avoided, and the safety and the reliability are realized;
2) The spring pushing mechanism can realize quick protection and slider reset, is sensitive and quick in response, is simple and quick to operate, and ensures the accuracy of the test.
Drawings
FIG. 1 is a perspective view of the overall structure of the present invention;
FIG. 2 is a schematic front view of the overall structure of the present invention;
FIG. 3 is a right side view of the overall structure of the present invention;
FIG. 4 is a schematic top view of the overall structure of the present invention;
FIG. 5 is a schematic perspective view of a spring pushing mechanism according to the present invention;
FIG. 6 is a schematic diagram of a front view of a spring pushing mechanism according to the present invention;
FIG. 7 is a right side view schematically illustrating the structure of the spring pushing mechanism of the present invention;
FIG. 8 is a schematic top view of a spring pushing mechanism of the present invention;
The figure indicates:
1-protection slide block, 2-trigger plate, 3-pressure spring, 4-reset spring, 5-pendulum and 6-pendulum base.
Detailed Description
The invention will now be described in detail with reference to the drawings and specific examples. The present embodiment is implemented on the premise of the technical scheme of the present invention, and a detailed implementation manner and a specific operation process are given, but the protection scope of the present invention is not limited to the following examples.
As shown in fig. 1 to 8, a pendulum protection device includes a pendulum base 6, a pendulum 5, and a spring pushing mechanism. The spring pushing mechanism consists of a protection sliding block 1, a trigger plate 2, a pressure spring 3 and a return spring 4.
Wherein, the protruding word shape groove has been seted up at the top of pendulum base 6, and protruding word shape groove upper portion is equipped with the cylinder with pendulum 5 afterbody cylinder through-hole looks adaptation for pendulum 5 rotates whereabouts completion drop hammer impact action. Square grooves matched with the protection sliding blocks 1 are formed in the middle of the pendulum bob base 6, two guide cylinders matched with the pressure springs 3 are arranged in the square grooves, trapezoidal guide blocks matched with trapezoidal sliding grooves of the protection sliding blocks 1 and inverted trapezoidal guide blocks are respectively arranged on the upper side and the lower side of the square grooves, and the upper trapezoidal guide blocks and the lower trapezoidal guide blocks can be clamped in the sliding grooves of the protection sliding blocks 1 to prevent the protection sliding blocks 1 from being separated from the guide blocks, so that the sliding is stable. The lower part of pendulum base 6 has seted up the protruding word groove, this protruding word groove upper portion be equipped with trigger plate 2 middle part cylinder through-hole looks adaptation cylinder for trigger plate 2 rotate release protection slider 1, this protruding word groove upper portion and pendulum base 6 middle part square groove's lower part has seted up with trigger plate 2 upper portion looks adaptation square through-hole, this protruding word groove lower part has seted up with trigger plate 2 lower part and reset spring 4 looks adaptation square groove, square inslot portion be equipped with reset spring 4 looks adaptation two guide cylinder, square groove front end has seted up with trigger plate 2 on square trigger post looks adaptation square through-hole. The right side of the lower part of the pendulum base 6 is provided with a square boss which is matched with the hammer head of the pendulum 5. The left side of the lower part of the pendulum base 6 is provided with a sample mounting plate.
The tail part of the pendulum 5 is provided with a cylindrical through hole which is matched with the cylindrical body at the upper part of the convex-shaped groove of the pendulum base 6. The hammer head of the pendulum 5 is arranged as a hammer head surface parallel to the square convex table surface on the right side of the lower part of the pendulum base 6.
The protection slider 1 has been seted up with the trapezoidal guide block looks adaptation about the square groove in pendulum base 6 middle part, the inclined plane parallel with pendulum 5 hammer face has been seted up to protection slider 1 oblique upside, protection slider 1 rear side is equipped with the cylinder pull rod, two circular pressure spring draw-in grooves with the 3 looks adaptation of pressure spring have been seted up to protection slider 1 rear side, the one end cover of pressure spring 3 is at guide cylinder and pendulum base 6 fixed connection, the other end and two circular pressure spring draw-in grooves fixed connection of protection slider 1 rear end, pressure spring 3 is in compression state, when the drop hammer, pressure spring 3 unblock, and promote the quick slip of protection slider 1. The square groove has been seted up to protection slider 1 downside, square inslot portion is provided with and is triangle-shaped boss with the cross-section that trigger plate 2 upper portion cross-section was triangle-shaped buckle looks adaptation, before the action of drop hammer, the triangle-shaped boss of protection slider 1 square inslot portion is connected with the buckle cooperation contact on trigger plate 2 upper portion, pressure spring 3 is in compression state, after the action of drop hammer, the triangle-shaped boss of protection slider 1 square inslot portion separates with the buckle on trigger plate 2 upper portion, pressure spring 3 unblock and promote protection slider 1 to slide in order to block the secondary mistake impact of pendulum 5.
The trigger plate 2 is divided into three part step plates, trigger plate 2 upper portion is provided with the cross-section of triangle-shaped boss looks adaptation with the inside cross-section of protection slider 1 square groove and is triangle-shaped buckle, the cylinder looks adaptation cylinder through-hole on the middle part protruding word shape groove upper portion of pendulum base 6 has been seted up at trigger plate 2 middle part, trigger plate 2 lower part front side is provided with the square trigger post with the square through-hole looks adaptation of the well lower part square groove of pendulum base 6, two circular pressure spring draw-in grooves of reset spring 4 looks adaptation have been seted up to trigger plate 2 lower part rear side, reset spring 4 one end cover is in the well lower part square groove fixed connection of direction cylinder and pendulum base 6, the other end is connected with two circular pressure spring draw-in grooves of trigger plate 2 rear end contact, when the drop hammer, pendulum 5 hammer contacts the trigger post, trigger plate 2 extrusion compression reset spring 4, trigger plate 2 rotates certain angle around the cylinder, the buckle on trigger plate 2 upper portion separates with the triangle-shaped boss in the protection slider square groove, pressure spring 3 and promote protection slider 1 to slide fast.
In practical application, when the drop hammer impact test is carried out on the test sample, the test sample is placed on a sample mounting plate on the left side of the pendulum base in advance. After the pendulum bob is lifted to the specified height or angle of the test, the hammer head is loosened, the hammer head falls down to strike the right square boss of the pendulum bob base, the trigger plate extrudes and compresses the reset spring, the trigger plate rotates around the cylinder for a certain angle, the buckle at the upper part of the trigger plate is separated from the triangular boss in the square groove of the protection slider, the pressure spring is unlocked and pushes the protection slider to rapidly slide out, at the moment, the pendulum bob can fall down again due to the fact that the boss of the impact pendulum bob base rebounds for a certain height, the hammer rod falls on the sliding protection slider to limit the secondary impact sample of the hammer head, and then the pull rod at the rear end of the protection slider is pulled to enable the triangular boss in the square groove of the protection slider to be in contact with the buckle at the upper part of the trigger plate again to lock the protection slider, and the pressure spring is in a compressed state and ready for the next falling hammer impact.
Claims (4)
1. A pendulum bob protection device, characterized in that: the pendulum bob is connected with the pendulum bob through a cylinder in the upper part of a convex-shaped groove formed in the top of the pendulum bob base, and the pendulum bob can rotate around the cylinder to fall to finish the falling hammer impact action; the middle square groove formed in the middle of the pendulum base is internally connected with a protection sliding block through a guide block, and a trapezoidal guide block and an inverted trapezoidal guide block are respectively arranged on the upper part and the lower part of the middle square groove; the protection sliding block is provided with an upper trapezoidal sliding groove and a lower trapezoidal sliding groove which are matched with an upper trapezoidal guide block and a lower trapezoidal guide block of a middle square groove of the pendulum base, and the middle square groove is connected with the rear end of the protection sliding block through a guide cylinder and a pressure spring; two guide cylinders matched with the pressure springs are arranged in the middle square groove; two circular pressure spring clamping grooves matched with the pressure springs are formed in the rear side of the protection sliding block, one end of each pressure spring is sleeved on the guide cylinder and fixedly connected with the pendulum base, and the other end of each pressure spring is fixedly connected with the two circular pressure spring clamping grooves in the rear end of the protection sliding block; the lower side of the protection sliding block is provided with a square groove, a boss with a triangular section is arranged in the square groove, the upper part of a middle convex-shaped groove arranged at the middle lower part of the pendulum base is connected with a trigger plate through a cylinder, and the trigger plate can rotate around the cylinder so as to enable the trigger plate to rotate and release the protection sliding block; square through holes matched with the upper parts of the trigger plates are formed in the upper parts of the middle convex-shaped grooves and the lower parts of the middle square grooves of the pendulum bob base; the trigger plate is a three-part stepped plate; the upper part of the trigger plate is provided with a triangular buckle with a cross section matched with the cross section of the square groove at the lower side of the protection slider, wherein the cross section of the triangular buckle is provided with a triangular boss; a cylindrical through hole matched with the cylindrical body at the upper part of the convex-shaped groove at the middle part of the pendulum base is formed in the middle part of the trigger plate; the front side of the lower part of the trigger plate is provided with a square trigger column; square grooves matched with the lower parts of the trigger plates and the reset springs are formed in the lower parts of the middle convex-shaped grooves, two guide cylinders matched with the reset springs are arranged in the square grooves, and square through holes matched with square trigger columns on the trigger plates are formed in the front ends of the square grooves; two circular pressure spring clamping grooves matched with a reset spring are formed in the rear side of the lower portion of the trigger plate, one end of the reset spring is sleeved on the guide cylinder and fixedly connected with the square groove at the lower portion of the middle convex-shaped groove, the other end of the reset spring is in contact connection with the two circular pressure spring clamping grooves at the rear end of the trigger plate, before the hammer falling action, the section inside the square groove of the protection slider is in contact connection with the buckle fit on the upper portion of the trigger plate, the pressure spring is in a compression state, when the hammer falling, the hammer rod of the pendulum contacts with the square trigger post, the trigger plate extrudes the compression reset spring, the trigger plate rotates around the cylinder for a certain angle, the buckle on the upper portion of the trigger plate is separated from the section inside the square groove of the protection slider by the triangular boss, and the pressure spring unlocks and pushes the protection slider to slide fast so as to block the secondary error impact of the pendulum.
2. The pendulum bob protection device of claim 1, wherein: and an inclined plane parallel to the pendulum hammer rod surface is arranged on the inclined upper side of the protective sliding block.
3. The pendulum bob protection device of claim 1, wherein: a square boss matched with the pendulum hammer head is arranged on the right side of the lower part of the pendulum base; the left side of the lower part of the pendulum base is provided with a sample mounting plate.
4. The pendulum bob protection device of claim 1, wherein: the tail part of the pendulum bob is provided with a cylindrical through hole which is matched with the cylindrical body at the upper part of the convex-shaped groove at the top of the pendulum bob base; the hammer head of the pendulum bob is provided with a hammer head surface parallel to the square boss surface on the right side of the lower part of the pendulum bob base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111104477.0A CN113804562B (en) | 2021-09-18 | 2021-09-18 | Pendulum bob protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111104477.0A CN113804562B (en) | 2021-09-18 | 2021-09-18 | Pendulum bob protection device |
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| Publication Number | Publication Date |
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| CN113804562A CN113804562A (en) | 2021-12-17 |
| CN113804562B true CN113804562B (en) | 2024-06-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111104477.0A Active CN113804562B (en) | 2021-09-18 | 2021-09-18 | Pendulum bob protection device |
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| CN (1) | CN113804562B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114354374B (en) * | 2022-03-21 | 2022-06-03 | 湖南涉外经济学院 | Sports ground surface layer material testing device |
| CN118464675A (en) * | 2024-06-12 | 2024-08-09 | 江苏省无锡交通高等职业技术学校 | A strength testing device for durable concrete |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN212988749U (en) * | 2020-09-07 | 2021-04-16 | 山东泛海阳光能源有限公司 | Secondary collision preventing device for photovoltaic module damage measurement |
| CN214189573U (en) * | 2020-10-30 | 2021-09-14 | 苏州盖威汽车配件有限公司 | Automobile bumper |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB567739A (en) * | 1943-10-20 | 1945-02-28 | Taylor William | Improvements in stamping, punching, marking and like machines |
| GB2171948B (en) * | 1985-02-26 | 1988-07-06 | Coal Ind | Hydraulic impact tool |
| CN102331333B (en) * | 2011-06-23 | 2013-06-19 | 上海大学 | Impact property detection comprehensive tester for baby carriage |
| CN203297408U (en) * | 2013-04-26 | 2013-11-20 | 浙江万里扬变速器股份有限公司 | Synchronizer structure capable of preventing secondary impact during gear shifting |
| CN105259022B (en) * | 2015-11-02 | 2017-12-01 | 山东科技大学 | One kind prevents the secondary impact device that drops hammer |
| CN205192883U (en) * | 2015-11-24 | 2016-04-27 | 南京汽车集团有限公司 | Two secondary shock devices are prevented to hammer impact testing machine that falls |
| CN107328544A (en) * | 2017-08-28 | 2017-11-07 | 北京沃华慧通测控技术有限公司 | Anti- secondary pulse device and impact test equipment |
| CN109374446B (en) * | 2018-09-29 | 2019-08-09 | 长安大学 | An impact test device |
| CN209820974U (en) * | 2019-04-02 | 2019-12-20 | 武汉驷腾科技发展有限公司 | Pendulum horizontal impact experimental device |
| CN210770487U (en) * | 2019-06-21 | 2020-06-16 | 常熟市谷雷特机械产品设计有限公司 | Water-saving valve |
| CN110962490B (en) * | 2019-12-22 | 2020-10-09 | 杭州简弈科技有限公司 | Press self-locking structure and adopt pen of pressing of this structure |
| CN212824836U (en) * | 2020-04-30 | 2021-03-30 | 深圳市瑞拓鑫电子有限公司 | Multi-frequency multifunctional microwave radio frequency device |
| CN212480679U (en) * | 2020-06-12 | 2021-02-05 | 象山恒润机械有限公司 | Pump shock absorber |
| CN111839852A (en) * | 2020-06-27 | 2020-10-30 | 吴岩 | Multi-azimuth following type moving mechanism for fat explosion instrument and weight losing device |
| CN112903481B (en) * | 2021-01-19 | 2023-02-17 | 青岛理工大学 | A pendulum testing machine |
-
2021
- 2021-09-18 CN CN202111104477.0A patent/CN113804562B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN212988749U (en) * | 2020-09-07 | 2021-04-16 | 山东泛海阳光能源有限公司 | Secondary collision preventing device for photovoltaic module damage measurement |
| CN214189573U (en) * | 2020-10-30 | 2021-09-14 | 苏州盖威汽车配件有限公司 | Automobile bumper |
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