CN113324857B - Freeze-broken hook for heavy hammer drop weight impact test device and use method - Google Patents
Freeze-broken hook for heavy hammer drop weight impact test device and use method Download PDFInfo
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- CN113324857B CN113324857B CN202110595391.6A CN202110595391A CN113324857B CN 113324857 B CN113324857 B CN 113324857B CN 202110595391 A CN202110595391 A CN 202110595391A CN 113324857 B CN113324857 B CN 113324857B
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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
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/04—Hardening by cooling below 0 degrees Celsius
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/08—Shock-testing
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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
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- 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
- G01N2203/0033—Weight
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The invention discloses a freeze-broken hook for a heavy hammer falling weight impact test device and a using method of the freeze-broken hook, and the freeze-broken hook comprises a first semi-ring body, a second semi-ring body, a cold and brittle fracture section and a cooling medium injection system, wherein a rigid suspender is connected in the middle of the outer wall of the first semi-ring body, two ends of the first semi-ring body and two ends of the second semi-ring body are respectively connected through the cold and brittle fracture section, the cooling medium injection system comprises a cooling spray head, a cooling medium pipeline and a cooling medium flow control valve, the cooling spray head is arranged at the position of the cold and brittle fracture section, the output end of the cooling spray head faces the cold and brittle fracture section, one end of the cooling medium pipeline is connected with the input end of the cooling spray head, the other end of the cooling medium pipeline is used for being connected with a cooling medium source, and the cooling medium flow control valve is arranged on the cooling medium pipeline. When the heavy hammer is required to fall down, the connection between the heavy hammer and the heavy hammer can be effectively and accurately loosened for testing.
Description
Technical Field
The invention belongs to the technical field of weight drop impact tests, and particularly relates to a freeze-broken hook for a weight drop impact test device and a using method of the freeze-broken hook.
Background
The weight drop impact test is an important test for researching building reinforcement, the current hook is completed by a first hook, a second hook and a clamping bolt, the first hook is composed of two special steel plates with the thickness of 14mm, and the middle of the first hook is connected by 10 high-strength bolts of 8.8S at intervals of 14 mm; and a second hook is connected below the first hook by a high-strength bolt with the diameter of 10mm and consists of two specially-made steel plates with the diameter of 12 mm. In order to control the falling of the heavy hammer at a high place, the heavy hammer impact test device is additionally provided with a clamping bolt, the clamping bolt is formed by connecting two special steel plates with the thickness of 10mm through a high-strength bolt of 8.8S, a steel wire connected with a hand-operated hoist is connected with the upper part of the clamping bolt, when the clamping bolt is arranged at the lower part of a groove, a second hook is tightened and cannot be loosened, when the steel wire is pulled through the hand-operated hoist to enable the clamping bolt to move to the upper part of the groove, the second hook is loosened, and then the heavy hammer falls off, so that the heavy hammer impact test is completed.
However, the existing hook has the following defects: because the second hook is connected with the heavy hammer through a steel wire rope, the heavy hammer can swing inevitably, and the heavy hammer can not be ensured to fall vertically in the falling process; because the unhooking mode of the hook is controlled by the clamping bolt, when the weight of the heavy hammer is too large, the hand-operated hoist cannot be loosened in time by manually pulling the hand-operated hoist, so that the accuracy of an experiment is greatly influenced; whether the heavy hammer can fall manually or not cannot be ensured, the impact time of falling of the heavy hammer cannot be accurately recorded, and the accuracy degree of an experiment cannot be further adjusted.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a freeze-broken hook for a heavy hammer drop weight impact test device and a using method thereof, and when the heavy hammer is required to drop, the connection between the hook and the heavy hammer can be effectively and accurately loosened for testing.
In order to solve the technical problems, the invention is realized by the following technical scheme:
the utility model provides a weight drop weight impact test device is with couple that freezes, includes first hemicycle body, second hemicycle body, cold brittle fracture section and coolant injection system, the intermediate position of first hemicycle body outer wall is connected with the rigidity jib, the both ends of first hemicycle body with the both ends of second hemicycle body are passed through respectively cold brittle fracture section is connected, coolant injection system includes cooling nozzle, coolant pipeline and coolant flow control valve, cooling nozzle sets up cold brittle fracture section position, just cooling nozzle's output orientation cold brittle fracture section, the one end of coolant pipeline with cooling nozzle's input is connected, and the other end is used for connecting the coolant source, coolant flow control valve sets up on the coolant pipeline.
Furthermore, cold shielding plates are arranged at two ends of the cold brittle fracture section.
Further, the freeze-breaking hook further comprises a connecting clamping head, a threaded hole is formed in the lower end of the connecting clamping head, and a first screw rod is arranged at the upper end of the connecting clamping head; the first semi-ring body and the both ends of second semi-ring body set up threaded hole, the upper end and the lower extreme of cold brittle fracture section are connected with the second screw rod respectively, the lower extreme of cold brittle fracture section with the both ends of second semi-ring body pass through second screw rod threaded connection, and the upper end of cold brittle fracture section passes through second screw rod threaded connection with the lower extreme of connecting the dop, the upper end of connecting the dop with the both ends of first semi-ring body pass through first screw rod threaded connection.
Further, the outer wall of the first semi-ring body is provided with a slide rail, the slide rail extends to the two ends of the first semi-ring body, the slide rail is provided with two slide blocks in a sliding manner, and the cooling spray head is connected to the slide blocks.
Furthermore, an electromagnet is arranged on the sliding block, a metal connecting ring is sleeved on the sliding block, the sliding block is not in contact with the metal connecting ring, the cooling spray head is fixed on the metal connecting ring, and the electromagnet can control the metal connecting ring to rotate around the sliding block.
Furthermore, limiting plates are arranged at two ends of the sliding rail.
Furthermore, at least two cooling spray heads are uniformly distributed on the metal connecting ring.
Furthermore, a cooling medium pump is also arranged on the cooling medium pipeline.
A use method of a freeze-broken hook for a heavy hammer drop weight impact test device comprises the following steps:
connecting the rigid suspender to a cross beam of a heavy hammer drop weight impact test device, connecting the heavy hammer to the second semi-ring body, and connecting the other end of the cooling medium pipeline to a cooling medium source;
adjusting the cooling medium flow control valve to a preset opening according to the pre-calculated injection amount and injection time of the cooling medium required by the cold brittle fracture section during fracture, recording the start moment of cooling medium injection, inputting the cooling medium to the cooling nozzle through the cooling medium pipeline by a cooling medium source, and injecting the cooling medium to the cold brittle fracture section through the cooling nozzle until the cold brittle fracture section is fractured, wherein the dropping moment of the heavy hammer from the heavy hammer drop weight impact test device is the sum of the start moment of cooling medium injection and the injection time of the cooling medium.
Compared with the prior art, the invention has at least the following beneficial effects: when the freeze-breaking hook for the heavy hammer drop weight impact test device is used, the rigid hanger rod is connected to a cross beam of the heavy hammer drop weight impact test device, the heavy hammer is connected to the second semi-ring body, and the other end of the cooling medium pipeline is connected to a cooling medium source; adjusting a cooling medium flow control valve to a preset opening degree according to the pre-calculated injection amount and injection time of the cooling medium required by the cold brittle fracture section during fracture, recording the start moment of the injection of the cooling medium, inputting the cooling medium to a cooling nozzle through a cooling medium pipeline by a cooling medium source, and injecting the cooling medium to the cold brittle fracture section through the cooling nozzle until the cold brittle fracture section is fractured, wherein the dropping moment of the heavy hammer from the heavy hammer drop weight impact test device is the start moment of the injection of the cooling medium plus the injection time of the cooling medium. Because the spray amount of the cooling medium required by the cold brittle fracture section during fracture and the controllability of the spray time are utilized, the falling time of the heavy hammer from the heavy hammer falling impact test device can be accurately controlled and mastered, namely the specific falling time of the heavy hammer can be obtained, the method has important significance for the follow-up analysis of the contact force and the time of the peak value of the support counter-force time course curve, and the problem that the specific falling time of the heavy hammer cannot be accurately recorded due to the subjectivity of manual operation when the traditional hook is used is effectively avoided; in addition, the hook design of the invention can meet the condition of using the rigid suspender when in use, namely, the rigid suspender is used, so the problem that the falling point is not in the center of the test piece due to instant deviation is not easy to occur at the falling instant of the heavy hammer, and the test error is greatly reduced; in addition, the invention utilizes the principle that the cooling medium freezes the cold and brittle fracture section, when in use, the process that the heavy hammer is manually operated to fall down is not needed after the heavy hammer is connected to the second half ring body, namely, compared with the traditional hook, the invention does not need to manually pull the clamping bolt and does not need to wait for too much time to balance the heavy hammer. The scheme of the invention has simple structure, easy operation and strong practicability.
Furthermore, the cold shielding plates are arranged at the two ends of the cold brittle fracture section, and the cold shielding plates can effectively shield the cooling medium in the area where the cold shielding plates are located.
Furthermore, the freeze-broken hook also comprises a connecting clamping head, wherein the lower end of the connecting clamping head is provided with a threaded hole, and the upper end of the connecting clamping head is provided with a first screw rod; threaded holes are formed in two ends of the first semi-ring body and the second semi-ring body, the upper end and the lower end of the cold and brittle fracture section are connected with second screws respectively, the lower end of the cold and brittle fracture section is in threaded connection with two ends of the second semi-ring body through the second screws, the upper end of the cold and brittle fracture section is in threaded connection with the lower end of the connecting clamping head through the second screws, and the upper end of the connecting clamping head is in threaded connection with two ends of the first semi-ring body through the first screws. The hook has the advantages that the detachable connection of the cold brittle fracture section is achieved, the heavy hammers with different weights can be hung on the hook, the applicability is wide, in addition, the lower end of the connecting clamping head is provided with a threaded hole, the upper end of the connecting clamping head is provided with the first screw rod, when the first semi-ring body and the second semi-ring body are connected, the second semi-ring body is connected with the cold brittle fracture section firstly, then the cold brittle fracture section can be connected with the first semi-ring body only by rotatably connecting the clamping head, and the operation is convenient.
Furthermore, the outer wall of the first semi-ring body is provided with a slide rail, two slide blocks are arranged on the slide rail in a sliding mode, the cooling spray head is connected to the slide blocks, and the relative position between the cooling spray head and the cold brittle fracture section can be conveniently controlled by controlling the positions of the slide blocks on the slide rail.
Furthermore, according to the invention, the electromagnet is arranged on the slider, the metal connecting ring is sleeved on the slider, the slider is not in contact with the metal connecting ring, the cooling spray head is fixed on the metal connecting ring, the metal connecting ring is controlled by the electromagnet to rotate around the slider, and the cooling spray head can spray the cold and brittle fracture section in a surrounding manner, so that the spraying effect is better.
Furthermore, limiting plates are arranged at two ends of the sliding rail, so that the sliding block is prevented from derailing, and the reliability of the hook structure is improved.
Furthermore, at least two cooling spray heads are uniformly distributed on the metal connecting ring, so that the spraying efficiency is improved, and the falling weight impact test efficiency of the heavy punch is improved.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural view of a freeze-broken hook for a weight drop impact test apparatus according to the present invention;
FIG. 2 is a schematic view of a split structure of a freeze-broken hook for a weight drop impact test apparatus according to the present invention;
FIG. 3 is a schematic view of the connection structure of the cold brittle fracture section of the freeze-broken hook for the falling weight impact test device of the present invention;
FIG. 4 is a schematic view of a part of a freeze-broken hook for a weight drop impact testing apparatus according to the present invention.
1-a first half-ring body; 2-a second half-ring; 3-cold brittle fracture section; 4-a cooling medium injection system; 401-cooling the spray head; 402-a cooling medium conduit; 403-cooling medium flow control valve; 5-cold shielding plate; 6-a first screw; 7-a rigid boom; 8-connecting the clamping head; 9-a second screw; 10-a slide rail; 11-a slide block; 12-metal connecting rings; 13-limiting plate; 14-coolant pump.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent 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.
Phosphorus is carried into the steel by pig iron, and in general, the phosphorus in the steel can be completely dissolved in ferrite. Phosphorus has a strong solid solution strengthening effect, so that the strength and hardness of the steel are increased, but the plasticity and the toughness are obviously reduced. This embrittlement phenomenon is more severe at low temperatures and is called cold embrittlement. It is generally desirable that the cold embrittlement transition temperature be below the working temperature of the workpiece to avoid cold embrittlement. In the process of crystallization, because phosphorus is easy to generate intragranular segregation, the phosphorus content in local areas is higher, the transformation temperature of cold brittleness is increased, and the cold brittleness is generated. The impact toughness of steel is also reduced along with the reduction of environmental temperature, and when the impact toughness value of the steel reaches a certain negative temperature, the impact toughness value of the steel is suddenly and obviously reduced and begins to be brittle fracture, and the property is called cold brittleness of the steel. According to the invention, a novel freeze-breaking hook is designed by utilizing the cold brittleness of steel, and through experimental verification, a plurality of defects of the traditional hook used for the traditional heavy hammer drop weight impact test device can be well overcome.
As a specific embodiment of the present invention, as shown in fig. 1 to 4, a freeze-broken hook for a weight drop weight impact test device comprises a first semi-ring body 1, a second semi-ring body 2, a cold brittle fracture section 3 and a cooling medium injection system 4, wherein a rigid hanger rod 7 is connected to the middle position of the outer wall of the first semi-ring body 1, the rigid hanger rod 7 is used for being fixedly connected with a cross beam of the weight drop weight impact test device, in this embodiment, the rigid hanger rod 7 is designed as a threaded rod, and is conveniently connected with the cross beam of the weight drop weight impact test device through threaded fit.
The two ends of the first half ring body 1 and the two ends of the second half ring body 2 are respectively connected through the cold-brittle fracture sections 3, preferably, as shown in fig. 2 and 3, the freeze-breaking hook further comprises a connecting clamping head 8, and the connecting clamping head 8 is used for connecting the first half ring body 1 and the cold-brittle fracture sections 3. Specifically, the lower end of the connecting clamping head 8 is provided with a threaded hole, the upper end of the connecting clamping head 8 is provided with a first screw rod 6, and two ends of the first semi-ring body 1 and the second semi-ring body 2 are provided with threaded holes. The upper end and the lower end of the cold and brittle fracture section 3 are respectively connected with a second screw 9, the lower end of the cold and brittle fracture section 3 is in threaded connection with the two ends of the second semi-ring body 2 through the second screw 9, namely, the second screw 9 at the lower end of the cold and brittle fracture section 3 extends into the threaded hole at the end part of the second semi-ring body 2 and then is in threaded connection. The upper end of the cold and brittle fracture section 3 is in threaded connection with the lower end of the connecting chuck 8 through a second screw rod 9, namely the second screw rod 9 at the upper end of the cold and brittle fracture section 3 extends into a threaded hole at the lower end of the connecting chuck 8 and then is in threaded connection. The upper end of the connecting clamping head 8 is in threaded connection with the two ends of the first semi-ring body 1 through the first screw rod 6, namely the first screw rod 6 at the upper end of the connecting clamping head 8 extends into the threaded hole at the end part of the first semi-ring body 1 and then is in threaded connection. The detachable connection between the cold brittle fracture section 3 and the first semi-ring body 1 and the second semi-ring body 2 is realized in a threaded connection mode, the cold brittle fracture sections 3 with different sizes can be replaced according to different weight quality, and the practicability is better.
In addition to the above embodiment, it is more preferable that cold shielding plates 5 are further provided at both ends of the cold brittle fracture section 3, and the cold shielding plates 5 can shield the cooling medium in the region where the cold brittle fracture section 3 is located.
Referring to fig. 1 and 4, the cooling medium injection system 4 includes a cooling spray head 401, a cooling medium pipeline 402 and a cooling medium flow control valve 403, the cooling spray head 401 is disposed at the position of the brittle fracture section 3, the output end of the cooling spray head 401 faces the brittle fracture section 3, one end of the cooling medium pipeline 402 is connected with the input end of the cooling spray head 401, the other end is used for connecting a cooling medium source, and the cooling medium flow control valve 403 is disposed on the cooling medium pipeline 402. In use, the other end of the cooling medium pipe 402 is connected to a cooling medium source, and the cooling medium is supplied to the cooling nozzle 401 through the cooling medium pump 14 provided in the cooling medium pipe 402.
As a preferred embodiment, as shown in fig. 1, a slide rail 10 is provided on an outer wall of the first half-ring body 1, the slide rail 10 extends to two ends of the first half-ring body 1, two slide blocks 11 are slidably provided on the slide rail 10, the cooling spray head 401 is connected to the slide blocks 11, and the slide blocks 11 drive the cooling spray head 401 to move together when sliding on the slide rail 10, so as to be adapted to the cold and brittle fracture sections 3 of different sizes. Preferably, as shown in fig. 2, limit plates 13 are provided at both ends of the slide rail 10 to prevent the slide 11 from derailing.
As a more preferable embodiment, an electromagnet is arranged on the slider 11, the metal connecting ring 12 is sleeved on the slider 11, the slider 11 is not in contact with the metal connecting ring 12, the cooling spray head 401 is fixed on the metal connecting ring 12, and the electromagnet can control the metal connecting ring 12 to rotate around the slider 11, so that the surrounding spraying during the spraying of the cold and brittle fracture section 3 can be realized, and the spraying effect is better. Preferably, at least two cooling nozzles 401 are uniformly distributed on the metal connecting ring 12, and in this embodiment, two cooling nozzles 401 are uniformly distributed on the metal connecting ring 12.
The cooling medium used in this example was liquid nitrogen.
The invention relates to a using method of a freeze-broken hook for a heavy hammer falling weight impact test device, which comprises the following steps:
connecting a rigid suspender 7 to a beam of the weight drop impact test device, connecting a weight to the second semi-ring body 2, and connecting the other end of the cooling medium pipeline 402 to a cooling medium source;
adjusting a cooling medium flow control valve 403 to a preset opening according to the pre-calculated injection amount and injection time of the cooling medium required by the cold brittle fracture section 3 during fracture, recording the start time of the injection of the cooling medium, inputting the cooling medium to a cooling nozzle 401 through a cooling medium pipeline 402 by a cooling medium source, and injecting the cooling medium to the cold brittle fracture section 3 through the cooling nozzle 401 until the cold brittle fracture section 3 fractures, wherein the dropping time of the heavy hammer from the heavy hammer drop weight impact test device is the sum of the start time of the injection of the cooling medium and the injection time of the cooling medium. Preferably, after the cooling spray head 401 is adjusted to a position more suitable for spraying by controlling the slide block 11 to move on the slide rail 10, the metal connecting ring 12 is controlled to rotate around the slide block 11 by the electromagnet, so that the cooling spray head 401 sprays the cold brittle fracture section 3 in a surrounding manner.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that the following descriptions are only illustrative and not restrictive, and that the scope of the present invention is not limited to the above embodiments: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the embodiments of the present invention, and they should be construed as being included therein. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (9)
1. The freeze-breaking hook is characterized by comprising a first semi-ring body (1), a second semi-ring body (2), a cold brittle fracture section (3) and a cooling medium injection system (4), wherein a rigid suspender (7) is connected to the middle position of the outer wall of the first semi-ring body (1), two ends of the first semi-ring body (1) are connected with two ends of the second semi-ring body (2) through the cold brittle fracture section (3), the cooling medium injection system (4) comprises a cooling nozzle (401), a cooling medium pipeline (402) and a cooling medium flow control valve (403), the cooling nozzle (401) is arranged at the position of the cold brittle fracture section (3), the output end of the cooling nozzle (401) faces the cold brittle fracture section (3), one end of the cooling medium pipeline (402) is connected with the input end of the cooling nozzle (401), the other end of the cooling medium flow control valve is used for connecting a cooling medium source, and the cooling medium flow control valve (403) is arranged on the cooling medium pipeline (402).
2. The freeze-breaking hook for a heavy hammer drop weight impact test device according to claim 1, wherein the two ends of the cold brittle fracture section (3) are provided with cold shielding plates (5).
3. The freeze-breaking hook for the drop weight impact test device of the heavy hammer according to claim 1, wherein the freeze-breaking hook further comprises a connecting chuck (8), a threaded hole is formed in the lower end of the connecting chuck (8), and a first screw (6) is arranged at the upper end of the connecting chuck (8); the first semi-ring body (1) with the both ends of second semi-ring body (2) set up threaded hole, the upper end and the lower extreme of cold brittle fracture section (3) are connected with second screw rod (9) respectively, the lower extreme of cold brittle fracture section (3) with the both ends of second semi-ring body (2) pass through second screw rod (9) threaded connection, and the upper end of cold brittle fracture section (3) passes through second screw rod (9) threaded connection with the lower extreme of being connected dop (8), the upper end of connecting dop (8) with the both ends of first semi-ring body (1) pass through first screw rod (6) threaded connection.
4. The freeze-broken hook for the drop weight impact test device of the heavy hammer according to claim 1, wherein the outer wall of the first half ring body (1) is provided with a slide rail (10), the slide rail (10) extends to two ends of the first half ring body (1), the slide rail (10) is slidably provided with two slide blocks (11), and the cooling nozzle (401) is connected to the slide blocks (11).
5. The freeze-broken hook for the drop weight impact test device of the heavy hammer according to claim 4, wherein the slider (11) is provided with an electromagnet, the slider (11) is sleeved with a metal connecting ring (12), the slider (11) is not in contact with the metal connecting ring (12), the cooling nozzle (401) is fixed on the metal connecting ring (12), and the electromagnet can control the metal connecting ring (12) to rotate around the slider (11).
6. The freeze-broken hook for a heavy hammer drop weight impact test device according to claim 4, wherein the two ends of the slide rail (10) are provided with a limiting plate (13).
7. The freeze-broken hook for a heavy hammer drop weight impact test device according to claim 5, wherein at least two cooling nozzles (401) are uniformly distributed on the metal connecting ring (12).
8. The freeze-broken hook for a drop weight impact testing device according to claim 1, wherein a cooling medium pump (14) is further disposed on the cooling medium pipe (402).
9. The method for using a freeze-broken hook for a weight drop impact test device according to any one of claims 1 to 8, comprising:
connecting the rigid suspender (7) to a cross beam of a heavy hammer drop weight impact test device, connecting a heavy hammer to the second semi-ring body (2), and connecting the other end of the cooling medium pipeline (402) to a cooling medium source;
adjusting the flow control valve (403) of the cooling medium to a preset opening according to the pre-calculated injection quantity and injection time of the cooling medium required by the cold and brittle fracture section (3) during fracture, recording the injection starting time of the cooling medium, inputting the cooling medium to the cooling spray head (401) by a cooling medium source through the cooling medium pipeline (402), and injecting the cooling medium to the cold and brittle fracture section (3) through the cooling spray head (401) until the cold and brittle fracture section (3) fractures, wherein the dropping time of the heavy hammer from the heavy hammer drop weight impact test device is the sum of the injection starting time of the cooling medium and the injection time of the cooling medium.
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| CN202110595391.6A CN113324857B (en) | 2021-05-28 | 2021-05-28 | Freeze-broken hook for heavy hammer drop weight impact test device and use method |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202687741U (en) * | 2012-06-13 | 2013-01-23 | 厦门市工程检测中心有限公司 | Lifting weight tripping device |
| CN104422620A (en) * | 2013-09-03 | 2015-03-18 | 海洋王（东莞）照明科技有限公司 | Impact test device for impact hammer drop prevention |
| CN204730993U (en) * | 2015-06-09 | 2015-10-28 | 山东豪迈机械科技股份有限公司 | A kind of impulse test pick-up unit |
| JP2015206663A (en) * | 2014-04-18 | 2015-11-19 | 旭硝子株式会社 | Impact test method for brittle material, impact test apparatus for brittle material, and method for manufacturing brittle material |
| CN205080014U (en) * | 2015-09-21 | 2016-03-09 | 江苏新真威试验机械有限公司 | Tubular product hammer impact testing machine that falls |
| CN209291799U (en) * | 2018-11-21 | 2019-08-23 | 长安大学 | A kind of self-locking detacher |
| CN111238970A (en) * | 2019-09-02 | 2020-06-05 | 中国矿业大学 | Drop hammer type steel wire rope impact failure test device and method |
| CN111366477A (en) * | 2020-04-30 | 2020-07-03 | 中国飞机强度研究所 | Loading device and system for drop hammer impact test |
| CN213275208U (en) * | 2020-10-21 | 2021-05-25 | 河南宝龙源检测技术有限公司 | Rubber and plastic low-temperature impact embrittlement tester |
-
2021
- 2021-05-28 CN CN202110595391.6A patent/CN113324857B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202687741U (en) * | 2012-06-13 | 2013-01-23 | 厦门市工程检测中心有限公司 | Lifting weight tripping device |
| CN104422620A (en) * | 2013-09-03 | 2015-03-18 | 海洋王（东莞）照明科技有限公司 | Impact test device for impact hammer drop prevention |
| JP2015206663A (en) * | 2014-04-18 | 2015-11-19 | 旭硝子株式会社 | Impact test method for brittle material, impact test apparatus for brittle material, and method for manufacturing brittle material |
| CN204730993U (en) * | 2015-06-09 | 2015-10-28 | 山东豪迈机械科技股份有限公司 | A kind of impulse test pick-up unit |
| CN205080014U (en) * | 2015-09-21 | 2016-03-09 | 江苏新真威试验机械有限公司 | Tubular product hammer impact testing machine that falls |
| CN209291799U (en) * | 2018-11-21 | 2019-08-23 | 长安大学 | A kind of self-locking detacher |
| CN111238970A (en) * | 2019-09-02 | 2020-06-05 | 中国矿业大学 | Drop hammer type steel wire rope impact failure test device and method |
| CN111366477A (en) * | 2020-04-30 | 2020-07-03 | 中国飞机强度研究所 | Loading device and system for drop hammer impact test |
| CN213275208U (en) * | 2020-10-21 | 2021-05-25 | 河南宝龙源检测技术有限公司 | Rubber and plastic low-temperature impact embrittlement tester |
Non-Patent Citations (2)
| Title |
|---|
| Daniel J. Benac等.Managing Cold Temperature and Brittle Fracture Hazards in Pressure Vessels.J Fail. Anal. and Preven. .2016,第55–66页. * |
| 王子瑜.结构钢的低温冷脆及断裂机理概述.科技信息.2010,第562页. * |
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