CN211504962U - Steel ball type self-centering connecting device - Google Patents
Steel ball type self-centering connecting device Download PDFInfo
- Publication number
- CN211504962U CN211504962U CN201922300812.9U CN201922300812U CN211504962U CN 211504962 U CN211504962 U CN 211504962U CN 201922300812 U CN201922300812 U CN 201922300812U CN 211504962 U CN211504962 U CN 211504962U
- Authority
- CN
- China
- Prior art keywords
- steel ball
- outer sleeve
- inner sleeve
- sleeve
- groove
- 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 steel ball type self-centering connecting device, which comprises an outer sleeve, wherein a first embedded groove is formed inside the outer sleeve; the inner sleeve is embedded in the first embedded groove of the outer sleeve; the steel ball component is assembled with the inner sleeve, and part of the steel ball component penetrates through the inner sleeve and extends to the outer sleeve to form movable connection with the outer sleeve; one end of the outer sleeve, far away from the inner sleeve, is formed into a first connecting end; one end of the inner sleeve, which is far away from the outer sleeve, is formed into a second connecting end; the first connecting end is used for connecting a test sample or a pull rod of the testing machine, and the second connecting end is used for connecting the pull rod or the test sample of the testing machine. The utility model discloses a connecting device uses the steel ball as bearing and adjusting part, connects the pull rod and the sample of testing machine through endotheca and overcoat and forms ball pair connecting device, and adjustment sensitivity is high, good, use and easy operation, the application is extensive to neutrality, and can realize mass production.
Description
Technical Field
The utility model relates to a material mechanics test technical field especially relates to a tensile attachment for testing machine tensile test, concretely relates to steel ball formula of experimental and testing machine connecting rod connection usefulness is from feeling relieved connecting device.
Background
In a material mechanics test, the test method needs to meet the requirements of national standards and industrial standards, most long-time tensile samples are in threaded connection, gaps exist in threaded connection, and coaxiality deviation can be generated after the samples are installed. In the tensile test, the deviation of the coaxiality causes the test sample to be subjected to an additional bending moment which cannot be detected by a load sensor in addition to a specified tensile force, so that test data such as yield strength or specified non-proportional elongation strength are distorted, and even the test fails.
In combination with the above technical problems, in the existing material mechanics test, universal joints are required to be additionally arranged at two ends of the sample so as to eliminate the additional bending moment of the threaded sample due to the coaxiality deviation. In the endurance test and the crispness test, a plurality of samples are connected in series for testing in order to improve the test efficiency, and when a plurality of samples are connected in series, the cumulative deviation of coaxiality is larger, so that universal couplings need to be additionally arranged among the samples.
In the prior art, a universal coupling device is required to be additionally arranged on a testing machine for long-time stretching, a universal joint used on the testing machine is generally of a pin penetrating structure, and although the testing machine is simple in structure and low in manufacturing cost, the testing machine is long in axial size, easy to wear, troublesome to operate and large in friction force, and application of the testing machine is limited to a certain extent.
Therefore, in view of the above technical problems, it is highly desirable to develop a tensile connecting attachment for tensile test of a testing machine.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a simple structure, compactness, frictional force are little, occupy tensile space little, can guarantee the tensile axiality of a plurality of samples, and can not make the steel ball formula of sample production bending force from feeling relieved connecting device.
In order to achieve the above object, the present invention provides the following technical solutions:
the utility model discloses a steel ball formula is from feeling relieved connecting device, this connecting device includes:
the first embedded groove is formed in the outer sleeve;
the inner sleeve is embedded in the first embedded groove of the outer sleeve; and
the steel ball component is assembled with the inner sleeve, and the steel ball component partially penetrates through the inner sleeve and extends to the outer sleeve to form movable connection with the outer sleeve;
the steel ball component is provided with a steel ball, and the steel ball component also comprises a structural body which is respectively connected with the outer sleeve and the inner sleeve;
one end of the outer sleeve, far away from the inner sleeve, is formed into a first connecting end;
one end of the inner sleeve, which is far away from the outer sleeve, is formed into a second connecting end;
the first connecting end is used for connecting a test sample or a pull rod of the testing machine, and the second connecting end is used for connecting the pull rod or the test sample of the testing machine.
Further, the outer sleeve comprises a first outer sleeve body and a second outer sleeve body which are integrally formed;
the cross-sectional dimension of the first outer sleeve body is larger than that of the second outer sleeve body;
the first embedded groove is formed in the first outer sleeve body;
the second outer sleeve body is formed into the first connecting end;
the first connecting end is provided with a threaded hole along the axis in advance so as to form a threaded connection structure with a pull rod of a test sample or a testing machine;
the inner sleeve is embedded in a first embedded groove of the first outer sleeve body, and the inner sleeve and the first embedded groove form clearance fit;
the inner housing part extends to the outside of the first insertion groove to form the second connection end;
the second connecting end is pre-provided with a threaded hole along the axis of the second connecting end so as to form a threaded connecting structure with a pull rod or a test sample of the testing machine;
the inner sleeve and the outer sleeve are coaxially arranged.
Further, the structural body comprises an inner ball seat fixedly connected with one end, embedded into the first embedded groove, of the inner sleeve and a connecting ball seat partially extending to the outside of the inner sleeve and movably connected with the outer sleeve;
the first outer sleeve body is provided with a second embedded groove;
both ends of the connecting ball seat extend into the second embedded groove;
steel ball grooves are formed in the opposite sides of the connecting ball seat and the inner ball seat;
the steel ball is connected in the steel ball groove in a rolling manner.
Furthermore, one end of the inner sleeve, which is embedded into the first embedding groove, is provided with a mounting hole;
the inner ball seat is provided with a mounting protrusion protruding outwards along the axis of the inner ball seat;
the mounting protrusion is matched with the mounting hole so as to fixedly connect the inner ball seat on the inner sleeve.
Further, the depth of the steel ball groove is smaller than the radius of the steel ball.
Furthermore, a second outer sleeve body of the outer sleeve is sleeved with a blocking sleeve.
Further, the blocking sleeve covers the second embedded groove.
In the technical scheme, the utility model provides a steel ball formula is from feeling relieved connecting device has following beneficial effect:
the utility model discloses a connecting device uses the steel ball as bearing and adjusting part, connects the pull rod and the sample of testing machine through endotheca and overcoat and forms ball pair connecting device, and adjustment sensitivity is high, good, use and easy operation, the application is extensive to neutrality, and can realize mass production.
The utility model discloses a connecting device compact structure, occupy tensile space little, can guarantee the tensile axiality of a plurality of samples, make the sample not produce the bending force.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to these drawings.
Fig. 1 is a schematic structural diagram of a steel ball type self-centering connecting device provided by an embodiment of the present invention;
fig. 2 is a schematic structural diagram of an outer sleeve of the steel ball type self-centering connecting device provided by the embodiment of the invention;
fig. 3 is a schematic structural diagram of an inner sleeve of a steel ball type self-centering connecting device according to an embodiment of the present invention;
fig. 4 is a schematic view of a connection structure of a steel ball assembly and an inner sleeve of the steel ball type self-centering connection device according to an embodiment of the present invention;
fig. 5 is a schematic view of a connection structure between a test state and a sample of the steel ball type self-centering connection device provided by the embodiment of the present invention.
Description of reference numerals:
1. a jacket; 2. an inner sleeve; 3. a blocking sleeve; 4. a steel ball component; 5. a sample;
101. a first connection end; 102. a first outer casing; 103. a second outer sleeve body; 104. a first embedded groove; 105. a second embedded groove;
201. a second connection end; 202. mounting holes;
401. an inner ball seat; 402. connecting a ball seat; 403. a steel ball; 404. and (7) installing a bulge.
Detailed Description
In order to make the technical solution of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings.
See fig. 1-3;
the utility model discloses a steel ball formula is from feeling relieved connecting device, this connecting device includes:
the coat comprises a coat 1, wherein a first embedded groove 104 is formed inside the coat 1;
the inner sleeve 2 is embedded in the first embedded groove 104 of the outer sleeve 1; and
the steel ball component 4 is assembled with the inner sleeve 2, and the steel ball component 4 partially penetrates through the inner sleeve 2 and extends to the outer sleeve 1 to form movable connection with the outer sleeve 1;
the steel ball component 4 is provided with a steel ball 403, and the steel ball component 4 also comprises structural bodies which are respectively connected with the outer sleeve 1 and the inner sleeve 2;
one end of the outer sleeve 1 far away from the inner sleeve 2 is formed into a first connecting end 101;
one end of the inner sleeve 2 far away from the outer sleeve 1 is formed into a second connecting end 201;
the first connecting end 101 is used for connecting a test sample 5 or a pull rod of the testing machine, and the second connecting end 201 is used for connecting the pull rod of the testing machine or the test sample 5.
Specifically, the embodiment discloses a connecting device using steel balls 403 as bearing and adjusting components, the connecting device is used in pairs and respectively connected to two ends of a test sample 5 in a threaded manner, the other end of the connecting device is connected with a pull rod of a testing machine, a ball pair connection is formed by the steel balls 403 and other structures, the outer sleeve 1 and the inner sleeve 2 are coaxially embedded to form a stress axis, and the inner steel ball component 4 is formed by a structural body and the steel balls 403 to transmit axial force. In the test, a plurality of tests can be connected and clamped on the testing machine by using the connecting device disclosed in the embodiment, and the serial test of a plurality of test samples 5 can be completed.
Preferably, the jacket 1 in this embodiment comprises a first jacket body 102 and a second jacket body 103 which are integrally formed;
the cross-sectional dimension of the first outer sleeve body 102 is larger than that of the second outer sleeve body 103;
the first outer casing 102 is internally formed with a first insertion groove 104;
the second outer jacket body 103 is formed as a first connection end 101;
the first connecting end 101 is provided with a threaded hole along the axis thereof in advance so as to form a threaded connection structure with the test sample 5 or a pull rod of the testing machine;
the inner sleeve 2 is embedded in the first embedding groove 104 of the first outer sleeve 102, and the inner sleeve 2 and the first embedding groove 104 form clearance fit;
the inner case 2 is partially extended to the outside of the first insertion groove 104 to be formed as a second connection end 201;
the second connecting end 201 is pre-provided with a threaded hole along the axis thereof so as to form a threaded connecting structure with a pull rod or a test sample 5 of the testing machine;
the inner sleeve 2 and the outer sleeve 1 are coaxially arranged.
The structure body comprises an inner ball seat 401 fixedly connected with one end of the inner sleeve 2 embedded into the first embedded groove 104, and a connecting ball seat 402 partially extending to the outside of the inner sleeve 2 and movably connected with the outer sleeve 1;
the first outer sleeve 102 is provided with a second embedded groove 105;
both ends of the connecting ball seat 402 extend into the second insertion groove 105;
steel ball grooves are formed in the opposite sides of the connecting ball seat 402 and the inner ball seat 401;
a steel ball 403 is connected in the steel ball groove in a rolling way.
Here, the structure of the inner sleeve 2 and the outer sleeve 1 and the assembly structure of the inner sleeve 2 and the outer sleeve 1 are defined in detail, wherein the outer sleeve 1 has a two-part structure, i.e., the first outer sleeve 102 and the second outer sleeve 103, respectively, as described above, wherein the cross-sectional dimension of the first outer sleeve 102 is larger than that of the second outer sleeve 103, and generally, the inner sleeve 2 and the outer sleeve 1 are both cylindrical structures, so that the outer sleeve 1 in this embodiment is formed as a stepped structure of two cylinders with different dimensions, a first embedded groove 104 is prefabricated in the first outer sleeve 102, the inner sleeve 2 is embedded in the first embedded groove 104, and is formed as a clearance fit, thereby completing the connection of the inner sleeve 2 and the outer sleeve 1.
In addition, the present embodiment also specifically defines the structure of the steel ball assembly 4, and the structural body is designed to form an assembly with the inner sleeve 2 and the outer sleeve 1, and the structural body is divided into two parts, namely the connecting ball seat 402 and the inner ball seat 401, and the steel ball 403 is required to be additionally arranged between the connecting ball seat 402 and the inner ball seat 401 because the connecting device of the present embodiment uses the steel ball 403 as a bearing and adjusting member. The inner ball seat 401 is fixedly assembled with the inner sleeve 2, and the connecting ball seat 402 transversely penetrates the inner sleeve 2 and extends to the second insertion groove 105 of the first outer sleeve 102 at both ends thereof. The inner ball seat 401 is already fixedly coupled with the inner housing 2 when transmitting the axial force, and thus, a certain adjustability of the coupling ball seat 402 is required, so that the length of the groove of the second insertion groove 105 needs to be greater than the width of the coupling ball seat 402.
Furthermore, the inner sleeve 2 is inserted into the first insertion groove 104 and has a mounting hole 202 at one end;
the inner ball seat 401 has a mounting projection 404 projecting outwardly along the axis of the inner ball seat 401;
the mounting protrusion 404 mates with the mounting hole 202 to secure the inner ball seat 401 to the inner housing 2.
In order to fixedly connect the inner ball seat 401 and the inner sleeve 2, a mounting hole 202 is designed at a designated position of the inner sleeve 2, a mounting protrusion 404 is formed at a corresponding position of the inner ball seat 401 to protrude outwards, and an assembly is formed by inserting the mounting protrusion 404 into the mounting hole 202, so that the inner ball seat 401 is firmly fixed in the inner sleeve 2.
The steel ball 403 of this embodiment is a main component for transmitting axial force, and it is necessary to ensure that the steel ball 403 has an adjusting capability while bearing, that is, it is necessary that the steel ball 403 can move in the steel ball groove, so that the depth of the steel ball groove is smaller than the radius of the steel ball 403.
Preferably, the second jacket body 103 of the jacket 1 in this embodiment is sleeved with the blocking sleeve 3. The sleeve 3 covers the second insertion groove 105. When the connecting ball seat 402 is installed, both ends thereof extend into the second insertion groove 105, but in order to ensure structural stability, the blocking sleeve 3 is sleeved on the outer circumference of the first outer sleeve 102, and the blocking sleeve 3 is utilized to limit the lateral displacement of the connecting ball seat 402, thereby ensuring that the assembled ball pair structure can smoothly transmit axial force.
The embodiment describes the structure of a ball pair connecting device, and in practical tests, the ball pair connecting device is used in pairs, namely, the two ends of the test sample 5 are both connected with the ball pair connecting device in a threaded mode, and then the other end of the connecting device is connected with a pull rod of a testing machine, so that the whole clamping process is completed. More specifically, in the first connection end 101 and the second connection end 201 of the connection device of the present embodiment, if the first connection end 101 is used as the end connected to the test sample 5, the second connection end 201 is connected to the pull rod of the testing machine, and conversely, if the first connection end 101 is used as the pull rod of the testing machine, the second connection end 201 is connected to the test sample 5.
In the technical scheme, the utility model provides a steel ball formula is from feeling relieved connecting device has following beneficial effect:
the utility model discloses a connecting device uses steel ball 403 as bearing and adjusting part, connects the pull rod of testing machine and sample 5 through endotheca 2 and overcoat 1 and forms ball pair connecting device, and adjustment sensitivity is high, good, use and easy operation, the application is extensive to neutrality, and can realize mass production.
The utility model discloses a connecting device compact structure, occupy tensile space little, can guarantee the tensile axiality of a plurality of samples 5, make sample 5 not produce the bending force.
While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the present invention. Accordingly, the drawings and description are illustrative in nature and should not be construed as limiting the scope of the invention.
Claims (7)
1. Steel ball formula is from feeling relieved connecting device, its characterized in that, this connecting device includes:
the jacket (1) is internally provided with a first embedded groove (104);
the inner sleeve (2), the said inner sleeve (2) inlays and installs in the first embedded groove (104) of the said overcoat (1); and
the steel ball component (4), the steel ball component (4) is assembled with the inner sleeve (2), and the steel ball component (4) partially penetrates through the inner sleeve (2) and extends to the outer sleeve (1) to form movable connection with the outer sleeve (1);
the steel ball component (4) is provided with a steel ball (403), and the steel ball component (4) further comprises structural bodies which are respectively connected with the outer sleeve (1) and the inner sleeve (2);
one end of the outer sleeve (1) far away from the inner sleeve (2) is formed into a first connecting end (101);
one end of the inner sleeve (2) far away from the outer sleeve (1) is formed into a second connecting end (201);
the first connecting end (101) is used for connecting a test sample (5) or a pull rod of a testing machine, and the second connecting end (201) is used for connecting the pull rod of the testing machine or the test sample (5).
2. The steel ball type self-centering connecting device according to claim 1, wherein the outer sleeve (1) comprises a first outer sleeve body (102) and a second outer sleeve body (103) which are integrally formed;
the cross-sectional dimension of the first outer sleeve body (102) is larger than that of the second outer sleeve body (103);
the first outer sleeve (102) is internally provided with the first embedded groove (104);
the second outer sleeve body (103) is formed into the first connection end (101);
the first connecting end (101) is provided with a threaded hole along the axis thereof in advance so as to form a threaded connection structure with a test sample (5) or a pull rod of a testing machine;
the inner sleeve (2) is embedded in a first embedding groove (104) of the first outer sleeve body (102), and the inner sleeve (2) and the first embedding groove (104) form clearance fit;
the inner sleeve (2) partially extends to the outside of the first insertion groove (104) to form the second connection end (201);
the second connecting end (201) is pre-provided with a threaded hole along the axis of the second connecting end so as to form a threaded connecting structure with a pull rod or a test sample (5) of the testing machine;
the inner sleeve (2) and the outer sleeve (1) are coaxially arranged.
3. The steel ball type self-centering connection device according to claim 2, characterized in that the structural body comprises an inner ball seat (401) fixedly connected with one end of the inner sleeve (2) embedded in the first embedded groove (104), and a connection ball seat (402) partially extending to the outside of the inner sleeve (2) and forming an active connection with the outer sleeve (1);
the first outer sleeve body (102) is provided with a second embedded groove (105);
both ends of the connecting ball seat (402) extend into the second embedded groove (105);
steel ball grooves are formed in the opposite sides of the connecting ball seat (402) and the inner ball seat (401);
the steel ball (403) is connected in the steel ball groove in a rolling manner.
4. The steel ball type self-centering connecting device according to claim 3, wherein the inner sleeve (2) is embedded into the first embedding groove (104) and has a mounting hole (202) at one end;
the inner ball seat (401) is provided with a mounting protrusion (404) protruding outwards along the axis of the inner ball seat (401);
the mounting protrusion (404) is matched with the mounting hole (202) so as to fixedly connect the inner ball seat (401) to the inner sleeve (2).
5. A steel ball self-centring connection according to claim 3, characterized in that the depth of the steel ball groove is smaller than the radius of the steel ball (403).
6. A steel ball type self-centring connection according to claim 3, characterised in that the second jacket body (103) of the jacket (1) is sheathed with a spacer sleeve (3).
7. Steel ball type self-centring connection according to claim 6, characterized in that said collar (3) covers said second embedded groove (105).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922300812.9U CN211504962U (en) | 2019-12-19 | 2019-12-19 | Steel ball type self-centering connecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922300812.9U CN211504962U (en) | 2019-12-19 | 2019-12-19 | Steel ball type self-centering connecting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211504962U true CN211504962U (en) | 2020-09-15 |
Family
ID=72417436
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922300812.9U Active CN211504962U (en) | 2019-12-19 | 2019-12-19 | Steel ball type self-centering connecting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211504962U (en) |
-
2019
- 2019-12-19 CN CN201922300812.9U patent/CN211504962U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| ATE23729T1 (en) | ARTICULATED CONNECTION. | |
| US9599221B2 (en) | Connecting rod/piston arrangement for alternative compressor and process for assembling connecting rod/piston arrangement for alternative compressor | |
| ITMI20081103A1 (en) | LINKING ARRANGEMENT AND ARTICULATED TREE WITH THIS. | |
| CN100387448C (en) | Coupling | |
| KR101998499B1 (en) | Axial swage tool | |
| CN110319966B (en) | Universal joint type inter-dimensional decoupling two-dimensional wireless passive sensor | |
| CN110657988B (en) | Bearing axial test mechanism | |
| KR101519285B1 (en) | Torque rod for vehicle | |
| CN104781665A (en) | Pipe connection joint | |
| CN211504962U (en) | Steel ball type self-centering connecting device | |
| CN205689631U (en) | Rubbercushioned sleeve bearing coupling | |
| CN213364464U (en) | Strength test tool | |
| CN213210236U (en) | Sleeve type anti-deformation test probe | |
| US20210138618A1 (en) | Torque wrench | |
| KR200429308Y1 (en) | Measuring equipment of shape tolerance for the insulationshaft | |
| CN203250703U (en) | Insulated pull rod assembly and insulated pull rod joint thereof | |
| JP2015113935A (en) | Coupling structure of shaft and universal joint | |
| JP3034870B1 (en) | Anti-vibration bush making equipment | |
| EP1764605B1 (en) | Cone penetrometer | |
| CN210108268U (en) | Elastic displacement optical fiber sensor | |
| CN111301707B (en) | Aircraft structural strength ground test secondary loading structure | |
| US20150303636A1 (en) | Tool for installation and/or removal of connector or gas-insulated switchgear termination | |
| CN215214543U (en) | Tension and pressure load transfer connector | |
| CN220134460U (en) | Shaft and sleeve connection positioning structure | |
| CN113530940A (en) | Bush with split bolt |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |