CN210108864U - Four-axis experiment rack - Google Patents
Four-axis experiment rack Download PDFInfo
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- CN210108864U CN210108864U CN201920482146.2U CN201920482146U CN210108864U CN 210108864 U CN210108864 U CN 210108864U CN 201920482146 U CN201920482146 U CN 201920482146U CN 210108864 U CN210108864 U CN 210108864U
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Abstract
The utility model discloses a four-axis experiment rack, wherein the middle part of a half block is provided with a first through hole for fixing a bushing; the Harvard block is positioned between the first support and the second support, the torsion assembly is rotatably arranged between the first support and the second support, and the bushing is fixed on the torsion assembly; the first U-shaped frame is fixedly connected with two side walls of the half block respectively; the second U-shaped frame is fixedly connected with the upper top surface and the lower bottom surface of the Harvard block respectively; the connecting frame is fixedly connected with the half block; the test method has the advantages that the durability test of the bushing in four directions is realized, the working efficiency is improved, the simulation is closer to the actual stress condition, and the obtained test data is more accurate; the first U-shaped frame, the second U-shaped frame and the connecting frame are all integrated, so that the fatigue strength is increased, the anti-torsion effect is improved, and the assembly error and the clamping time are reduced; the decoupling device has the advantages of high strength, good decoupling performance and good durability.
Description
Technical Field
The utility model relates to an experiment rack especially relates to a four-axis experiment rack.
Background
The automobile bushing is excited in multiple directions when the whole automobile runs, the stress condition of the bushing needs to be reproduced as much as possible in a bench test in the development process, and the durability test is mainly performed on the bushing in the x direction, the y direction, the z direction and the torsion direction. In addition to load calculation, a bench scheme is crucial, an existing experiment bench only tests in two directions or a single direction, and therefore a simulation test of the actual stress condition of a part cannot be achieved at the same time, and therefore it can be seen that how to solve the problems of multidirectional decoupling, strength, durability and installation of the experiment bench must be considered seriously.
Disclosure of Invention
The utility model aims to solve the technical problem that a four-axis experiment bench that four directions atress circumstances can reappear that intensity is high, decoupling zero performance is good and durability is good is provided, the experiment bench that adopts this kind of structure can improve work efficiency, and the simulation is close actual atress circumstances more, obtains test data more accurate.
The utility model provides a technical scheme that above-mentioned technical problem adopted does: a four-axis experiment rack comprises a Harvard block, wherein a first through hole for fixing a bushing is formed in the middle of the Harvard block, and the Harvard block is octagonal;
the first loading tool comprises a first support, a second support and a torsion assembly, the Harvard block is positioned between the first support and the second support, the torsion assembly is rotatably arranged between the first support and the second support, and the bushing is fixed on the torsion assembly;
the second loading tool comprises a first U-shaped frame vertically arranged along the z direction and a first connecting shaft connected with the z-direction loading mechanism, the first connecting shaft is fixedly connected with the top of the first U-shaped frame, and the first U-shaped frame is fixedly connected with two side walls of the Harvard block respectively;
the third loading tool comprises a second U-shaped frame horizontally arranged along the x direction and a second connecting shaft connected with the x-direction loading mechanism, the second connecting shaft is fixedly connected with the top of the second U-shaped frame, and the second U-shaped frame is fixedly connected with the upper top surface and the lower bottom surface of the Harvard block respectively;
the fourth loading tool comprises a connecting frame horizontally arranged along the y direction and a third connecting shaft connected with the y direction loading mechanism, the third connecting shaft is fixedly connected with the top of the connecting frame, and the connecting frame is fixedly connected with the Harvard block.
First U type frame include first connecting rod, first support arm and second support arm, the one end of first support arm with the one end body coupling of first connecting rod, the other end of first support arm be provided with first rod end joint bearing, the one end of second support arm with the other end body coupling of first connecting rod, the other end fixedly connected with connecting plate of second support arm, the bottom fixedly connected with of connecting plate first rod end joint bearing, the left and right sides lateral wall of haversian block on be provided with outside bellied first boss respectively, first rod end joint bearing with correspond first boss fixed connection, first connecting axle fix the middle part of first connecting rod. The first rod end joint bearing is arranged at the other end of the first support arm and at the bottom of the connecting plate, so that the decoupling device has the advantages of good decoupling performance, high strength and no loss to the loading direction of equipment; the first boss is arranged to prevent the first U-shaped frame, the second U-shaped frame and the connecting frame from interfering with each other, and meanwhile, the connecting strength of the first support arm is guaranteed.
The second U type frame include second connecting rod and two third support arms, every the one end of third support arm with correspond the tip fixed connection of second connecting rod, the other end of third support arm be provided with second rod end joint bearing, the last top surface of haversian piece on be provided with the second boss respectively with lower bottom surface, second rod end joint bearing with correspond second boss fixed connection, the second connecting axle fix the middle part of second connecting rod. The second rod end joint bearing is arranged at the other end of the third support arm, so that the decoupling function is good, the strength is high, and no loss is caused to the loading direction of equipment; the second boss is arranged to prevent the first U-shaped frame, the second U-shaped frame and the connecting frame from interfering with each other, and meanwhile, the connecting strength of the third support arm is guaranteed.
The connecting plate is provided with a second through hole which penetrates through the connecting plate from left to right, and the third support arm positioned at the upper part penetrates through the second through hole. The first U-shaped frame and the second U-shaped frame are prevented from interfering with each other.
The link include the linking arm and four fourth support arms of X type, every the fourth support arm one end with correspond the tip fixed connection of linking arm, the other end of fourth support arm be provided with third rod end joint bearing, adjacent first boss with the second boss between be provided with the third boss, the third boss with the inclined plane lateral wall fixed connection of haversian block, third rod end joint bearing with correspond third boss fixed connection, the third connecting axle fix the middle part of linking arm. The four-point connection with the Harvard block is realized, and the torsion resistance and the stability are better; the third rod end joint bearing is arranged at the other end of the fourth support arm, so that the decoupling function is good, the strength is high, and no loss is caused to the loading direction of equipment; the third boss is arranged to prevent the first U-shaped frame, the second U-shaped frame and the connecting frame from interfering with each other, and meanwhile, the connecting strength of the fourth support arm is guaranteed.
The torsion component comprises a fourth connecting shaft, a fifth connecting shaft, a first flange plate, a second flange plate and a screw rod, the fourth connecting shaft is rotatably arranged on the first support, the fifth connecting shaft is rotatably arranged on the second support, the first flange plate is arranged at one end of the fourth connecting shaft, the second flange plate is arranged at one end of the fifth connecting shaft, the first flange plate and the second flange plate are oppositely arranged, one end of the screw rod is in threaded connection with the first flange plate, the other end of the screw rod is in threaded connection with the second flange plate, and the lining sleeve is sleeved on the screw rod and located between the first flange plate and the second flange plate.
The second support outside be provided with the torsion dish, the torsion dish with fifth connecting axle be with detachable mode fixed connection, the other end and the torsion pneumatic cylinder fixed connection of torsion dish, the turned angle of torsion dish be less than 180.
Two first tapered roller bearings are arranged between the first support and the third connecting shaft, and two second tapered roller bearings are arranged between the second support and the fourth connecting shaft. The double-tapered roller bearing is arranged, so that the axial stress strength is improved.
The screw is a high-strength screw, and the grade is 12.9. The high-strength screw is 12.9-grade in strength grade, the tensile strength of the high-strength screw is more than 1200MPa, the yield strength of the high-strength screw is more than 1080MPa, the problem of easy breakage is avoided, long-time testing can be carried out, the service life is long, and the normal running of the testing is ensured.
Compared with the prior art, the utility model has the advantages that a four-axis experiment bench is disclosed, the first loading tool, the second loading tool, the third loading tool and the fourth loading tool are adopted to be fixedly connected with the octagonal Harvard block, and the durability test of the bushings in four directions is realized at the same time, so that the working efficiency is improved, the simulation is closer to the actual stress condition, and the obtained test data is more accurate;
the bushings are fixed by the aid of the octagonal half blocks, so that the bushings are convenient to mount, the apertures of the first through holes are adjusted to be suitable for the bushings of different specifications, universality is high, and meanwhile, the octagonal structure is convenient to fixedly connect with each loading tool;
the first U-shaped frame, the second U-shaped frame and the connecting frame are all integrated, so that the fatigue strength is increased, the anti-torsion effect is improved, and the assembly error and the clamping time are reduced; the decoupling device has the advantages of high strength, good decoupling performance and good durability.
Drawings
Fig. 1 is a perspective view of the present invention;
fig. 2 is a perspective view of the torsion assembly of the present invention;
fig. 3 is a cross-sectional view of the torsion assembly of the present invention;
fig. 4 is a perspective view of the haver block of the present invention;
fig. 5 is a front view of the haver block of the present invention;
figure 6 is the perspective view of the assembled haver block, the first boss, the second boss and the third boss of the utility model
Fig. 7 is a perspective view of the first U-shaped frame and the first connecting shaft of the present invention after assembly;
fig. 8 is an assembled cross-sectional view of the first U-shaped frame and the first connecting shaft of the present invention;
fig. 9 is a perspective view of the second U-shaped frame and the second connecting shaft of the present invention after assembly;
fig. 10 is an assembled perspective view of the connecting frame and the third connecting shaft of the present invention;
fig. 11 is an assembled cross-sectional view of the connecting frame and the third connecting shaft according to the present invention.
Detailed Description
The present invention will be described in further detail with reference to the following embodiments.
The first embodiment is as follows: as shown in fig. 1-6, a four-axis experiment bench comprises a haver block 1, wherein a first through hole 3 for fixing a bushing 2 is arranged in the middle of the haver block 1, and the haver block 1 is octagonal;
the first loading tool comprises a first support 4, a second support 5 and a torsion assembly, the Harvard block 1 is positioned between the first support 4 and the second support 5, the torsion assembly is rotatably arranged between the first support 4 and the second support 5, and the bushing 2 is fixed on the torsion assembly;
the second loading tool comprises a first U-shaped frame 6 vertically arranged along the z direction and a first connecting shaft 7 connected with the z-direction loading mechanism, the first connecting shaft 7 is fixedly connected with the top of the first U-shaped frame 6, and the first U-shaped frame 6 is fixedly connected with two side walls of the Harvard block 1 respectively;
the third loading tool comprises a second U-shaped frame 8 horizontally arranged along the x direction and a second connecting shaft 9 connected with the x-direction loading mechanism, the second connecting shaft 9 is fixedly connected with the top of the second U-shaped frame 8, and the second U-shaped frame 8 is fixedly connected with the upper top surface and the lower bottom surface of the Harvard block 1 respectively;
the fourth loading frock includes along y to the link 10 of horizontal setting and the third connecting axle 11 of being connected to loading mechanism with y, the top fixed connection of third connecting axle 11 and link 10, link 10 and haversian 1 fixed connection.
In this embodiment, as shown in fig. 7 and 8, the first U-shaped frame 6 includes a first connecting rod 61, a first supporting arm 62 and a second supporting arm 63, one end of the first supporting arm 62 is integrally connected to one end of the first connecting rod 61, the other end of the first supporting arm 62 is provided with a first rod end joint bearing 64, one end of the second supporting arm 63 is integrally connected to the other end of the first connecting rod 61, the other end of the second supporting arm 63 is fixedly connected to a connecting plate 65, the bottom of the connecting plate 65 is fixedly connected to the first rod end joint bearing 64, left and right side walls of the haver block 1 are respectively provided with first bosses 12 protruding outwards, the first rod end joint bearing 64 is fixedly connected to the corresponding first boss 12, and the first connecting shaft 7 is fixed to the middle portion of the first connecting rod 61.
In this embodiment, as shown in fig. 9, the second U-shaped frame 8 includes a second connecting rod 81 and two third arms 82, one end of each third arm 82 is fixedly connected to the end of the corresponding second connecting rod 81, the other end of each third arm 82 is provided with a second rod end joint bearing 83, the upper top surface and the lower bottom surface of the haver block 1 are respectively provided with a second boss 13, the second rod end joint bearing 83 is fixedly connected to the corresponding second boss 13, and the second connecting shaft 9 is fixed to the middle of the second connecting rod 81.
In this embodiment, the connecting plate 65 is provided with a second through hole 651 penetrating left and right, and the second arm 82 located at the upper portion passes through the second through hole 651.
In this embodiment, as shown in fig. 10 to 11, the connecting frame 10 includes an X-shaped connecting arm 101 and four fourth arms 102, one end of each fourth arm 102 is fixedly connected to the end of the corresponding connecting arm 101, the other end of each fourth arm 102 is provided with a third rod end joint bearing 103, a third boss 14 is arranged between the adjacent first boss 12 and second boss 13, the third boss 14 is fixedly connected to the inclined side wall of the huff block 1, the third rod end joint bearing 103 is fixedly connected to the corresponding third boss 14, and the third connecting shaft 11 is fixed to the middle of the connecting arm 101.
In the second embodiment, the other structures are the same as those in the first embodiment, and the difference is that: as shown in fig. 2 and 3, the torsion assembly includes a fourth connecting shaft 15, a fifth connecting shaft 16, a first flange 17, a second flange 18 and a screw 19, the fourth connecting shaft 15 is rotatably disposed on the first support 4, the fifth connecting shaft 16 is rotatably disposed on the second support 5, the first flange 17 is disposed at one end of the fourth connecting shaft 15, the second flange 18 is disposed at one end of the fifth connecting shaft 16, the first flange 17 and the second flange 18 are disposed opposite to each other, one end of the screw 19 is screwed with the first flange 17, the other end of the screw 19 is screwed with the second flange 18, the bushing 2 is sleeved on the screw 19, and the bushing 2 is located between the first flange 17 and the second flange 18. The screw 19 is a high strength screw and is rated at 12.9.
In this embodiment, a torsion disc 20 is disposed outside the second support 5, the torsion disc 20 is detachably and fixedly connected with the fifth connecting shaft 15, the other end of the torsion disc 20 is fixedly connected with a torsion hydraulic cylinder, and the rotation angle of the torsion disc 20 is less than 180 °.
In the third embodiment, the other structures are the same as those of the second embodiment, and the differences are as follows: two first tapered roller bearings 21 are arranged between the first support 4 and the third connecting shaft 15, and two second tapered roller bearings 22 are arranged between the second support 5 and the fourth connecting shaft 16.
Claims (9)
1. Four-axis experiment bench, its characterized in that includes
The middle part of the Harvard block is provided with a first through hole for fixing the bushing, and the Harvard block is octagonal;
the first loading tool comprises a first support, a second support and a torsion assembly, the Harvard block is positioned between the first support and the second support, the torsion assembly is rotatably arranged between the first support and the second support, and the bushing is fixed on the torsion assembly;
the second loading tool comprises a first U-shaped frame vertically arranged along the z direction and a first connecting shaft connected with the z-direction loading mechanism, the first connecting shaft is fixedly connected with the top of the first U-shaped frame, and the first U-shaped frame is fixedly connected with two side walls of the Harvard block respectively;
the third loading tool comprises a second U-shaped frame horizontally arranged along the x direction and a second connecting shaft connected with the x-direction loading mechanism, the second connecting shaft is fixedly connected with the top of the second U-shaped frame, and the second U-shaped frame is fixedly connected with the upper top surface and the lower bottom surface of the Harvard block respectively;
the fourth loading tool comprises a connecting frame horizontally arranged along the y direction and a third connecting shaft connected with the y direction loading mechanism, the third connecting shaft is fixedly connected with the top of the connecting frame, and the connecting frame is fixedly connected with the Harvard block.
2. The four-axis experiment bench of claim 1, characterized in that first U type frame include first connecting rod, first support arm and second support arm, the one end of first support arm with the one end body coupling of first connecting rod, the other end of first support arm be provided with first rod end joint bearing, the one end of second support arm with the other end body coupling of first connecting rod, the other end fixedly connected with connecting plate of second support arm, the bottom fixedly connected with of connecting plate first rod end joint bearing, the left and right sides lateral wall of haver block on be provided with outside bellied first boss respectively, first rod end joint bearing with correspond first boss fixed connection, first connecting shaft fix the middle part of first connecting rod.
3. The four-axis experiment bench according to claim 2, characterized in that the second U-shaped frame comprises a second connecting rod and two third supporting arms, one end of each third supporting arm is fixedly connected with the corresponding end of the second connecting rod, the other end of each third supporting arm is provided with a second rod end joint bearing, the upper top surface and the lower bottom surface of each Harvard block are respectively provided with a second boss, the second rod end joint bearings are fixedly connected with the corresponding second bosses, and the second connecting shaft is fixed in the middle of the second connecting rod.
4. The four-axis laboratory bench according to claim 3, wherein the connecting plate is provided with a second through hole penetrating left and right, and the third arm at the upper part passes through the second through hole.
5. The four-axis experiment bench according to claim 3, characterized in that the connecting frame comprises an X-shaped connecting arm and four fourth supporting arms, the upper end of each fourth supporting arm is fixedly connected with the corresponding end of the connecting arm, a third rod end joint bearing is arranged at the other end of each fourth supporting arm, a third boss is arranged between the adjacent first boss and the adjacent second boss, the third boss is fixedly connected with the inclined side wall of the Harvard block, the third rod end joint bearing is fixedly connected with the corresponding third boss, and the third connecting shaft is fixed in the middle of the connecting arm.
6. The four-axis laboratory bench according to claim 1, wherein the torsion assembly comprises a fourth connecting shaft, a fifth connecting shaft, a first flange, a second flange and a screw rod, the fourth connecting shaft is rotatably arranged on the first support, the fifth connecting shaft is rotatably arranged on the second support, the first flange plate is arranged at one end of the fourth connecting shaft, the second flange plate is arranged at one end of the fifth connecting shaft, the first flange plate and the second flange plate are oppositely arranged, one end of the screw rod is in threaded connection with the first flange plate, the other end of the screw rod is in threaded connection with the second flange plate, the bushing is sleeved on the screw rod, and the bushing is located between the first flange plate and the second flange plate.
7. The four-axis experiment table frame as claimed in claim 6, wherein a torsion disc is arranged on the outer side of the second support, the torsion disc is fixedly connected with the fifth connecting shaft in a detachable mode, the other end of the torsion disc is fixedly connected with a torsion hydraulic cylinder, and the rotation angle of the torsion disc is smaller than 180 degrees.
8. A four-axis laboratory bench according to claim 7, characterized in that two first tapered roller bearings are arranged between said first support and said fourth connecting shaft, and two second tapered roller bearings are arranged between said second support and said fifth connecting shaft.
9. The four-axis laboratory bench of claim 7, wherein the screws are high strength screws and are rated at 12.9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920482146.2U CN210108864U (en) | 2019-04-10 | 2019-04-10 | Four-axis experiment rack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920482146.2U CN210108864U (en) | 2019-04-10 | 2019-04-10 | Four-axis experiment rack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210108864U true CN210108864U (en) | 2020-02-21 |
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ID=69535045
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920482146.2U Active CN210108864U (en) | 2019-04-10 | 2019-04-10 | Four-axis experiment rack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210108864U (en) |
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2019
- 2019-04-10 CN CN201920482146.2U patent/CN210108864U/en active Active
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