CN212391334U - Superconducting magnet pull rod tension test fixture - Google Patents
Superconducting magnet pull rod tension test fixture Download PDFInfo
- Publication number
- CN212391334U CN212391334U CN202021248517.XU CN202021248517U CN212391334U CN 212391334 U CN212391334 U CN 212391334U CN 202021248517 U CN202021248517 U CN 202021248517U CN 212391334 U CN212391334 U CN 212391334U
- Authority
- CN
- China
- Prior art keywords
- pull rod
- superconducting magnet
- long nut
- magnet pull
- test fixture
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The utility model discloses a superconducting magnet pull rod tension test fixture, which comprises a sealing cover, a long nut used for being in threaded connection with the end part of a superconducting magnet pull rod and a fixed sleeve used for being connected with a tension tester, wherein the fixed sleeve is provided with a counter bore for installing the long nut; the sealing cover comprises a circumferential part and a limiting cover, wherein the circumferential part is sleeved with the outer circumferential part of the fixing sleeve, the limiting cover is provided with a pull rod mounting hole, and the circumferential part is vertically connected with the limiting cover; the inner wall surface of the limiting cover is abutted against the long nut, and the circumferential part is connected with the fixed sleeve so as to limit the displacement of the long nut in the axial direction of the fixed sleeve. Because the clamp is in threaded connection with the end part of the superconducting magnet pull rod through the long nut, and the fixed sleeve is only in contact with the long nut and not connected with the long nut, after the end part of the superconducting magnet pull rod is in threaded engagement, the superconducting magnet pull rod, the long nut and the tension tester can be still separated by detaching the seal cover, so that the detaching time after the threads are engaged is saved, and the detection efficiency is improved.
Description
Technical Field
The utility model relates to a magnetic resonance technology field, more specifically say, relate to a superconducting magnet pull rod tensile test anchor clamps.
Background
The magnetic resonance imaging equipment is widely applied to the field of clinical medicine, the core component of the magnetic resonance imaging equipment is a magnetic resonance imaging superconducting magnet, and the performance of the magnetic resonance superconducting magnet directly influences the imaging effect of the equipment.
The magnetic resonance superconducting magnet comprises a liquid helium container in the middle and a vacuum interlayer coated on the periphery, and the liquid helium container in the middle is mostly fixed through a superconducting magnet pull rod. Because the stress condition of the pull rod is complex during working, in order to ensure stability and safety, the superconducting magnet pull rod has higher tensile strength, and the tensile strength of the superconducting magnet pull rod at normal temperature and liquid helium temperature needs to be subjected to tensile test before use.
In the prior art, two ends of a superconducting magnet pull rod are generally directly screwed into a threaded interface of a tension tester to test the superconducting magnet pull rod. However, because the two ends of the pull rod are made of stainless steel, the pull rod is easy to be seized by threads when a large pulling force is applied, so that the pull rod is difficult to disassemble, wastes time and labor.
In summary, how to provide a superconducting magnet pull rod tension test fixture convenient to disassemble is an urgent problem to be solved by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at providing a superconducting magnet pull rod tensile test anchor clamps has avoided the problem that the pull rod that the interlock of pull rod tip screw thread caused can't be pulled down from the tensile tester.
In order to achieve the above object, the present invention provides the following technical solutions:
a superconducting magnet pull rod tension test fixture comprises a sealing cover, a long nut used for being in threaded connection with the end of a superconducting magnet pull rod and a fixed sleeve used for being connected with a tension tester, wherein the fixed sleeve is provided with a counter bore for mounting the long nut;
the sealing cover comprises a circumferential part and a limiting cover, wherein the circumferential part is sleeved with the outer circumferential part of the fixing sleeve, the limiting cover is provided with a pull rod mounting hole, and the circumferential part is vertically connected with the limiting cover;
the inner wall surface of the limiting cover is abutted to the long nut, and the circumferential part is connected with the fixing sleeve so as to limit the displacement of the long nut in the axial direction of the fixing sleeve.
Preferably, the circumference part is provided with an internal thread, and the fixed sleeve is provided with a first external thread matched with the internal thread.
Preferably, the thread form of the second external thread of the fixing sleeve connected with the tension tester is the same as that of the first external thread.
Preferably, the sum of the lengths of said first external thread and said second external thread is equal to the length of said sleeve.
Preferably, the circumference part is provided with at least one thread mounting hole for mounting a locking screw, and the fixed sleeve is provided with a thread connecting hole matched with the thread mounting hole.
Preferably, the threaded mounting holes are evenly distributed in a circumferential direction of the circumferential portion.
Preferably, one of the inner surface of the circumferential portion and the outer circumferential portion of the fixing sleeve is provided with a protrusion, and the other is provided with a groove engaged with the protrusion.
Preferably, an axis of the tie rod installation hole coincides with an axis of the circumferential portion.
The utility model provides a superconducting magnet pull rod tension test fixture, which comprises a sealing cover, a long nut used for being in threaded connection with the end part of a superconducting magnet pull rod and a fixed sleeve used for being connected with a tension tester, wherein the fixed sleeve is provided with a counter bore for installing the long nut; the sealing cover comprises a circumferential part and a limiting cover, wherein the circumferential part is sleeved with the outer circumferential part of the fixing sleeve, the limiting cover is provided with a pull rod mounting hole, and the circumferential part is vertically connected with the limiting cover; the inner wall surface of the limiting cover is abutted against the long nut, and the circumferential part is connected with the fixed sleeve so as to limit the displacement of the long nut in the axial direction of the fixed sleeve.
Before testing, firstly connecting a tension tester and the fixed sleeve, and enabling the limit cover to penetrate through one end of a superconducting magnet pull rod by utilizing a pull rod mounting hole; connecting the end part of the superconducting magnet pull rod with a long nut, and installing the long nut into a countersunk hole of the fixed sleeve; connecting the fixing sleeve with the circumference part of the sealing cover, wherein the inner wall surface of the limiting cover of the sealing cover is abutted against the long nut, so that the displacement of the long nut in the axial direction of the fixing sleeve is limited; and repeating the process, and installing the clamp at the other end of the superconducting magnet pull rod.
After the test is finished, the connection between the fixing sleeve and the sealing cover is opened, the long nut is taken out from the countersunk head hole of the fixing sleeve, and the connection between the fixing sleeve and the tension tester and the connection between the long nut and the end part of the superconducting magnet pull rod are respectively opened.
Because the utility model provides an anchor clamps pass through the long nut and superconducting magnet pull rod tip threaded connection, and only contact between fixed cover and the long nut is disconnected, consequently behind superconducting magnet pull rod tip screw thread interlock, still accessible is dismantled the closing cap and is separated superconducting magnet pull rod and long nut and tensile tester, has saved the dismantlement time after the screw thread interlock, has improved detection efficiency.
And simultaneously, the utility model provides an installation and the dismantlement process of anchor clamps and superconducting magnet pull rod are simple, and are easy and simple to handle.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a superconducting magnet pull rod tension test fixture according to an embodiment of the present invention after being assembled with a superconducting magnet pull rod;
3 fig. 3 2 3 is 3 a 3 schematic 3 sectional 3 view 3 in 3 the 3 direction 3 of 3 a 3- 3 a 3 in 3 fig. 3 1 3. 3
In fig. 1-2:
the superconducting magnet comprises a superconducting magnet pull rod 1, a long nut 2, a fixed sleeve 3, a sealing cover 4, a circumferential part 41 and a limiting cover 42.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The core of the utility model is to provide a superconducting magnet pull rod tensile test anchor clamps, the problem of pulling rod can't pull down on the tensile tester from the pull rod that has avoided the interlock of pull rod tip screw thread to cause.
Referring to fig. 1-2, fig. 1 is a schematic structural view of an assembled superconducting magnet pull rod and a specific embodiment of a superconducting magnet pull rod tension testing fixture according to the present invention; 3 fig. 3 2 3 is 3 a 3 schematic 3 sectional 3 view 3 in 3 the 3 direction 3 of 3 a 3- 3 a 3 in 3 fig. 3 1 3. 3
It should be noted that, as used herein, the upper end refers to an end surface relatively close to the tensile tester with a short distance, and the lower end refers to an end surface relatively far from the tensile tester with a short distance.
The utility model provides a superconducting magnet pull rod tension test fixture, which comprises a sealing cover 4, a long nut 2 used for being in threaded connection with the end part of a superconducting magnet pull rod 1 and a fixed sleeve 3 used for being connected with a tension tester, wherein the fixed sleeve 3 is provided with a counter bore for installing the long nut 2; the sealing cover 4 comprises a circumferential part 41 which is sleeved with the outer circumferential part of the fixed sleeve 3 and a limiting cover 42 which is provided with a pull rod mounting hole, and the circumferential part 41 is vertically connected with the limiting cover 42; the inner wall surface of the stopper cap 42 abuts against the long nut 2, and the circumferential portion 41 is connected to the fixed sleeve 3 to restrict displacement of the long nut 2 in the axial direction of the fixed sleeve 3.
Preferably, the tie rod mounting hole may be provided with an axis coincident with the axis of the circumferential portion 41.
The long nut 2 is in threaded connection with the end part of the superconducting magnet pull rod 1, and internal threads matched with the end part of the superconducting magnet pull rod 1 are arranged on the inner wall surface.
Since there is only contact and no connection between the long nut 2 and the fixing sleeve 3, it is preferable that the outer wall surface of the long nut 2 is provided with a smooth plane for facilitating the mounting and dismounting of the long nut 2 in the countersunk hole, and the surface roughness of the outer wall surface is determined according to the requirements in actual production.
Preferably, referring to fig. 2, the length of the long nut 2 may be set to be greater than 50mm in consideration of the length of the end of the superconducting magnet pull rod 1. The above standard is not an absolute standard for the length of the long nut 2, and the length of the long nut 2 may be adjusted according to the length of the end of the superconducting magnet pull rod 1 in actual production.
In order to prevent the long nut 2 from being engaged with the thread of the superconducting magnet pull rod 1 during the test, it is preferable that the long nut 2 is made of a high-strength alloy material.
In addition, the long nut 2 and the end part of the superconducting magnet pull rod 1 can be lubricated before the connection of the two, so that the risk of thread locking is reduced.
The fixed sleeve 3 is connected with the tension tester through a second external thread, a counter bore for mounting a long nut 2 connected with the superconducting magnet pull rod 1 is arranged on the fixed sleeve, the depth of the counter bore is determined according to the requirement in actual production, and the inner diameter of the counter bore is slightly larger than the outer diameter of the end part of the superconducting magnet pull rod 1.
The cover 4 is connected to the fixing sleeve 3 for limiting the displacement of the long nut 2 in the axial direction of the fixing sleeve 3.
Preferably, the circumferential portion 41 of the cover 4 may be provided with an internal thread, and the fixing sleeve 3 is provided with a first external thread matching the internal thread. The seal cover 4 and the fixed sleeve 3 are connected in a threaded connection mode, so that the structural strength of connection can be guaranteed, and the threaded structure is easy to process and facilitates the processing and production of the fixed sleeve 3 and the seal cover 4.
Preferably, the thread profile of the second external thread connected with the tension tester and the thread profile of the first external thread of the fixing sleeve 3 can be set to be the same, so that the feeding of a forming cutter or a machining tool is prevented from being changed in the machining process, and the production efficiency is improved.
The thread profile of the first external thread should be determined according to the requirements in actual production in combination with the thread profile standard.
Preferably, the sum of the lengths of the first external thread and the second external thread can be set to be equal to the length of the fixing sleeve 3, namely, the external threads are arranged on the surface of the outer peripheral part of the fixing sleeve 3, so that the thread processing steps are simplified, and the production efficiency is further improved.
Of course, the pouch 3 and the cover 4 can be connected by other detachable connections.
Preferably, the circumferential portion 41 of the cover 4 is provided with at least one threaded mounting hole for mounting a locking screw, and the fixing sleeve 3 is provided with a threaded connection hole matched with the threaded mounting hole.
It should be noted that, during the tension test, the test tension is transmitted to the superconducting magnet pull rod 1 through the fixed sleeve 3 and the long nut 2, and the size and the setting position of the threaded connection hole should ensure the tensile strength of the fixed sleeve 3, so as to avoid the crack and even the fracture near the threaded connection hole due to stress concentration in the test process.
When the number of the screw-thread mounting holes is 2 or more, it is preferable that the screw-thread mounting holes may be uniformly distributed in the circumferential direction of the circumferential portion 41.
Furthermore, the pouch 3 and the cover 4 can be connected by snap-fitting, preferably, one of the inner surface of the circumferential portion 41 and the outer peripheral portion of the pouch 3 is provided with a projection, and the other is provided with a groove for snap-fitting with the projection.
Preferably, the outer circumference of the fixing sleeve 3 may be provided with a semicircular protrusion, and the inner wall surface of the circumferential portion 41 of the sealing cover 4 is provided with a semicircular groove matched with the semicircular protrusion, and the semicircular protrusion is an annular protrusion.
During assembly, firstly, the superconducting magnet pull rod 1 passes through a pull rod mounting hole on the sealing cover 4, and the sealing cover 4 is sleeved outside the superconducting magnet pull rod 1; after the long nut 2 and the fixed sleeve 3 are installed in place, the sealing cover 4 is pushed from bottom to top to move in the axial direction of the superconducting magnet pull rod 1 until the semicircular bulge of the fixed sleeve 3 is clamped in the semicircular groove of the circumferential part 41.
Of course, the cross-sectional shape, distribution and arrangement position of the projections can be adjusted according to the actual production requirements.
Before testing, firstly connecting a tension tester with the fixed sleeve 3, and enabling the limit cover 42 to penetrate through one end of the superconducting magnet pull rod 1 by utilizing a pull rod mounting hole; connecting the end part of the superconducting magnet pull rod 1 with a long nut 2, and installing the long nut 2 into a countersunk hole of a fixed sleeve 3; a circumferential portion 41 connecting the fixing sleeve 3 and the cap 4 with an inner wall surface of a stopper cap 42 of the cap 4 abutting the long nut 2, thereby restricting displacement of the long nut 2 in the axial direction of the fixing sleeve 3; and repeating the process, and installing the clamp at the other end of the superconducting magnet pull rod 1.
After the test is finished, the connection between the fixed sleeve 3 and the sealing cover 4 is opened, the long nut 2 is taken out from the countersunk hole of the fixed sleeve 3, and the connection between the fixed sleeve 3 and the tension tester and the connection between the long nut 2 and the end part of the superconducting magnet pull rod 1 are respectively opened.
In this embodiment, the fixture is in threaded connection with the end of the superconducting magnet pull rod 1 through the long nut 2, and the fixed sleeve 3 is only in contact with and disconnected from the long nut 2, so that after the end of the superconducting magnet pull rod 1 is in threaded engagement, the superconducting magnet pull rod 1 and the long nut 2 can be still separated from the tension tester by detaching the seal cover 4, the detaching time after the threaded engagement is saved, and the detection efficiency is improved.
Meanwhile, the fixture and the superconducting magnet pull rod 1 provided by the embodiment are simple in mounting and dismounting process and simple and convenient to operate.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
It is right above the utility model provides a superconducting magnet pull rod tensile test anchor clamps have carried out the detailed introduction. The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.
Claims (8)
1. The superconducting magnet pull rod tension test fixture is characterized by comprising a sealing cover (4), a long nut (2) and a fixed sleeve (3), wherein the long nut (2) is in threaded connection with the end of a superconducting magnet pull rod (1), the fixed sleeve (3) is used for being connected with a tension tester, and a counter bore for mounting the long nut (2) is formed in the fixed sleeve (3);
the sealing cover (4) comprises a circumferential part (41) sleeved with the outer circumferential part of the fixed sleeve (3) and a limiting cover (42) provided with a pull rod mounting hole, and the circumferential part (41) is vertically connected with the limiting cover (42);
the inner wall surface of the limiting cover (42) is abutted to the long nut (2), and the circumferential part (41) is connected with the fixing sleeve (3) so as to limit the displacement of the long nut (2) in the axial direction of the fixing sleeve (3).
2. The superconducting magnet pull rod tensile test fixture according to claim 1, wherein an internal thread is provided on the circumferential portion (41), and a first external thread matched with the internal thread is provided on the fixing sleeve (3).
3. The superconducting magnet pull rod tensile force test fixture according to claim 2, wherein the thread profile of the second external thread of the fixing sleeve (3) connected with the tensile force tester is the same as the thread profile of the first external thread.
4. The superconducting magnet pull rod tension test fixture according to claim 3, wherein the sum of the lengths of the first external thread and the second external thread is equal to the length of the fixing sleeve (3).
5. The superconducting magnet pull rod tension test fixture according to claim 1, wherein the circumferential portion (41) is provided with at least one threaded mounting hole for mounting a locking screw, and the fixing sleeve (3) is provided with a threaded connection hole matched with the threaded mounting hole.
6. The superconducting magnet pull rod tensile test fixture of claim 5, wherein the threaded mounting holes are evenly distributed in a circumferential direction of the circumferential portion (41).
7. The superconducting magnet pull rod tensile test fixture according to claim 1, wherein one of the inner surface of the circumferential portion (41) and the outer peripheral portion of the fixing sleeve (3) is provided with a protrusion, and the other is provided with a groove for engaging with the protrusion.
8. Superconducting magnet pull rod tensile test fixture according to any of claims 1-7, wherein the axis of the pull rod mounting hole coincides with the axis of the circumferential portion (41).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021248517.XU CN212391334U (en) | 2020-06-30 | 2020-06-30 | Superconducting magnet pull rod tension test fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021248517.XU CN212391334U (en) | 2020-06-30 | 2020-06-30 | Superconducting magnet pull rod tension test fixture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212391334U true CN212391334U (en) | 2021-01-22 |
Family
ID=74256009
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021248517.XU Active CN212391334U (en) | 2020-06-30 | 2020-06-30 | Superconducting magnet pull rod tension test fixture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212391334U (en) |
-
2020
- 2020-06-30 CN CN202021248517.XU patent/CN212391334U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207556980U (en) | A kind of separate type Hopkinson pull rod test fixture | |
| CN212391334U (en) | Superconducting magnet pull rod tension test fixture | |
| CN108844810A (en) | A kind of full pipe sample stress-rupture tester fixture of small diameter metal thin-wall tube | |
| CN203348282U (en) | Locking device for large-specification bolt connecting piece | |
| CN107941606A (en) | A kind of separate type Hopkinson pull rod test fixture | |
| CN107968368B (en) | Fast-assembling splicing sleeve | |
| CN210893928U (en) | Clamp for dumbbell-shaped test sample | |
| CN210770780U (en) | Cutting ferrule formula pipe fitting connects | |
| CN208187846U (en) | A kind of full pipe sample stress-rupture tester fixture of small diameter metal thin-wall tube | |
| CN205283042U (en) | Carbon fiber core optoelectrical composite wire strain clamp | |
| US3514140A (en) | Stay member,tension rod and end fitting | |
| CN212391333U (en) | Simple and easy anchor clamps of superconducting magnet pull rod tensile test | |
| CN211728067U (en) | Screw hole centering clamp for pipeline welding flange | |
| CN207705404U (en) | A kind of carbon fiber complex core self-locking quick access device | |
| CN211315154U (en) | Improved nitrogen making machine angle seat valve | |
| CN209774446U (en) | connecting device for positioning cylinder | |
| CN108516677B (en) | Online optical fiber perform wire drawing location closing device | |
| CN212613388U (en) | Steel strand connector | |
| CN112629387B (en) | Qualified judging device for coaxiality of internal and external threads of threaded sleeve | |
| CN220227671U (en) | Cable connector convenient to confirm to install in place | |
| CN220227417U (en) | Nested installation formula fastener of adaptation | |
| CN218496370U (en) | Underwater forced vibration test device for fuel assembly | |
| CN212904208U (en) | Plug for room temperature tensile test of metal material tubular test piece | |
| CN217882702U (en) | MPP electric power pipe convenient to connect | |
| CN220060170U (en) | Rod piece connector |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |