CN112611894A - Automatic test fixture for frequency converter - Google Patents
Automatic test fixture for frequency converter Download PDFInfo
- Publication number
- CN112611894A CN112611894A CN202011418405.9A CN202011418405A CN112611894A CN 112611894 A CN112611894 A CN 112611894A CN 202011418405 A CN202011418405 A CN 202011418405A CN 112611894 A CN112611894 A CN 112611894A
- Authority
- CN
- China
- Prior art keywords
- frequency converter
- movable
- test fixture
- automatic test
- spring
- 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.)
- Pending
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- 238000012360 testing method Methods 0.000 title claims abstract description 23
- 230000000694 effects Effects 0.000 claims description 6
- 230000006978 adaptation Effects 0.000 claims description 3
- 230000002146 bilateral effect Effects 0.000 claims description 2
- 230000003139 buffering effect Effects 0.000 abstract description 6
- 230000033001 locomotion Effects 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000004377 microelectronic Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
- G01R1/0408—Test fixtures or contact fields; Connectors or connecting adaptors; Test clips; Test sockets
- G01R1/0425—Test clips, e.g. for IC's
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
Abstract
The invention relates to an automatic test fixture for a frequency converter, which comprises a base and a workbench, wherein a buffer device is symmetrically arranged between the base and the workbench, a motor is arranged on one side of the workbench, a movable seat in threaded connection with a threaded rod is fixedly arranged below two movable plates, and clamping pieces are symmetrically arranged on opposite surfaces of the two movable plates. The clamping device is simple in structure and novel in design, the threaded rod is driven by the motor to drive the two movable plates to move relatively, the sliding block is driven by the handle to further drive the clamping piece to move on the sliding groove, so that the clamping device is suitable for frequency converters with different specifications, the application range of the clamping device is improved, the pressure on the frequency converter can be effectively buffered by the first spring and the second spring, the frequency converter is prevented from being excessively extruded and damaged, the frequency converter can be prevented from driving the workbench to move up and down by the buffering device, and the phenomenon of inaccurate test data caused by shaking of the frequency converter is further prevented.
Description
Technical Field
This patent application belongs to converter test equipment technical field, and more specifically says, relates to an automatic test fixture for converter.
Background
The frequency converter is a power control device which applies frequency conversion technology and microelectronic technology and controls an alternating current motor by changing the working power supply frequency mode of the motor, and mainly comprises a rectification unit (alternating current to direct current), a filtering unit, an inversion unit (direct current to alternating current), a braking unit, a driving unit, a detection unit microprocessing unit and the like.
However, the performance testing table used in the production and processing of the existing frequency converter is inflexible in clamping the frequency converter, relatively complex in operation, and easy to damage the frequency converter during clamping, and in addition, in the testing process of the frequency converter, vibration is generated, which further causes unstable testing, so that a person skilled in the art provides an automatic testing clamp for the frequency converter, so as to solve the problems proposed in the background art.
Disclosure of Invention
The technical problem to be solved by the invention is to provide an automatic test fixture for a frequency converter, which has the characteristics of flexible clamping, simple operation and difficult damage to the frequency converter during clamping, thereby effectively solving the problems in the background art.
In order to solve the problems, the technical scheme adopted by the invention is as follows:
an automatic test fixture for a frequency converter comprises a base and a workbench, wherein buffer devices are symmetrically arranged between the base and the workbench, a motor is mounted on one side of the workbench, a groove is formed in the middle of the upper surface of the workbench, a threaded rod fixedly connected with the output end of the motor is rotatably mounted in the groove, movable plates are symmetrically mounted on the upper surface of the workbench, movable seats in threaded connection with the threaded rod are fixedly mounted below the two movable plates, and clamping pieces are symmetrically mounted on opposite surfaces of the two movable plates;
the holder is including fixing the casing on the fly leaf, one side movable mounting of casing has the activity post, the one end of activity post extends to the inside of casing and installs first limiting plate, install first spring between first limiting plate and the casing, the other end fixed mounting of activity post has the mounting panel, the both ends of mounting panel are rotated and are installed first movable rod, two be equipped with the second spring between the first movable rod, and the splint are all installed to the front end of two first movable rods.
As a further aspect of the invention: buffer includes that the symmetry fixes the mount pad at base and workstation corresponding surface respectively, corresponding two fixed mounting has the third spring between the mount pad, and crisscross two second movable rods of installing between four mount pads, two the both ends of second movable rod rotate with the mount pad respectively and are connected, and the middle part position department of two second movable rods moves through the circle pivot and links to each other two the bilateral symmetry that the second movable rod is located the circle pivot is equipped with the fourth spring.
As a further aspect of the invention: the movable plate comprises two movable plates, sliding grooves are symmetrically formed in the inner portions of the two movable plates, sliding blocks fixedly connected with a clamping piece are movably mounted in the sliding grooves, and handles are mounted on the other sides of the sliding grooves.
As a further aspect of the invention: the fixed cover in middle part position department of threaded rod is equipped with the second limiting plate, and the threaded rod is located the both sides of second limiting plate and has seted up positive and negative screw thread respectively, two positive and negative screw hole with positive and negative screw thread one-to-one adaptation is seted up respectively to the junction of sliding seat and threaded rod.
As a further aspect of the invention: the surface mounting of splint has the arc backing plate, the arc backing plate is the component of a rubber material, and the surface of arc backing plate is equipped with anti-skidding line.
As a further aspect of the invention: the lower surface four corners position department of base all installs the supporting leg, four the antiskid ribbed tile is all installed to the below of supporting leg.
Due to the adoption of the technical scheme, the invention has the beneficial effects that:
the clamping device is simple in structure and novel in design, the threaded rod is driven by the motor to drive the two movable plates to move relatively, the sliding block is driven by the handle to further drive the clamping piece to move on the sliding groove, so that the clamping device is suitable for frequency converters with different specifications, the application range of the clamping device is improved, the pressure on the frequency converter can be effectively buffered by the first spring and the second spring, the frequency converter is prevented from being excessively extruded and damaged, the frequency converter can be effectively prevented from shaking left and right under the action of the first spring and the second spring, the frequency converter can be prevented from driving the workbench to move up and down by the buffering device, and the phenomenon that test data are inaccurate due to shaking of the frequency converter can be further prevented.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the internal structure of the present invention;
FIG. 3 is a schematic view of the structure of the clamp of the present invention;
wherein: 1. a base; 2. a work table; 3. a motor; 4. a groove; 5. a threaded rod; 6. a movable plate; 7. a clamping member; 71. a housing; 72. a first spring; 73. a first limit plate; 74. a movable post; 75. mounting a plate; 76. a first movable bar; 77. a second spring; 78. a splint; 8. a chute; 9. a buffer device; 91. a third spring; 92. a second movable bar; 93. a round pivot; 94. a fourth spring; 95. a mounting seat; 10. a movable seat; 11. a slider; 12. a handle.
Detailed Description
The present invention will be described in further detail with reference to examples.
Referring to fig. 1 to 3, in the embodiment of the present invention, an automatic test fixture for a frequency converter includes a base 1 and a workbench 2, wherein a buffer device 9 is symmetrically disposed between the base 1 and the workbench 2, a motor 3 is installed at one side of the workbench 2, a groove 4 is formed at a middle position of an upper surface of the workbench 2, a threaded rod 5 fixedly connected to an output end of the motor 3 is rotatably installed inside the groove 4, movable plates 6 are symmetrically installed on the upper surface of the workbench 2, movable seats 10 in threaded connection with the threaded rod 5 are fixedly installed below the two movable plates 6, clamping members 7 are symmetrically installed on opposite surfaces of the two movable plates 6, the threaded rod 5 is driven to rotate by the motor 3, the two movable seats 10 are driven to move in opposite directions by the threaded connection, the two movable plates 6 are further driven to move in opposite directions, a sliding block 11 is driven by a handle 12 to further drive the clamping members 7 to move on a, thereby adapting to frequency converters with different specifications and improving the application range of the invention.
The clamping member 7 comprises a housing 71 fixed on the movable plate 6, a movable column 74 is movably mounted on one side of the housing 71, one end of the movable column 74 extends into the housing 71 and is provided with a first limit plate 73, a first spring 72 is mounted between the first limit plate 73 and the housing 71, a mounting plate 75 is fixedly mounted on the other end of the movable column 74, first movable rods 76 are rotatably mounted at two ends of the mounting plate 75, a second spring 77 is arranged between the two first movable rods 76, and clamping plates 78 are mounted at the front ends of the two first movable rods 76, the movement of the movable post 74 can be damped by the first spring 72 and the movement of the two first movable rods 76 can be damped by the second spring 77, thereby controlling the opening angle of the two first movable rods 76, effectively buffering the pressure on the frequency converter, preventing the frequency converter from being excessively extruded and damaged, and can effectively prevent the converter from rocking left and right under the effect of first spring 72, second spring 77.
In fig. 2, the buffering device 9 includes mounting seats 95 symmetrically fixed on the corresponding surfaces of the base 1 and the workbench 2, a third spring 91 is fixedly mounted between two corresponding mounting seats 95, two second movable rods 92 are mounted between four mounting seats 95 in a staggered manner, two ends of each second movable rod 92 are rotatably connected with the mounting seats 95, the middle positions of the two second movable rods 92 are rotatably connected through a pivot 93, the two second movable rods 92 are symmetrically arranged on two sides of the pivot 93, and the opening angles of the two second movable rods 92 are controlled through the fourth springs 94 on the buffering device 9, so that the frequency converter can be prevented from driving the workbench to move up and down through the third springs 91 on the two corresponding mounting seats 95, and further the phenomenon that the frequency converter shakes to cause inaccurate test data can be prevented.
In fig. 2, the sliding grooves 8 are symmetrically formed in the two movable plates 6, the sliding blocks 11 fixedly connected with the clamping members 7 are movably mounted in the sliding grooves 8, the handles 12 are mounted on the other sides of the sliding grooves 8, the sliding blocks 11 are driven by the handles 12 to further drive the clamping members 7 to move on the sliding grooves 8, so that the frequency converters of different specifications are adapted, and the application range of the invention is expanded.
In fig. 2, the fixed cover in middle part position department of threaded rod 5 is equipped with the second limiting plate, and threaded rod 5 is located the both sides of second limiting plate and has seted up positive and negative screw thread respectively, and the junction of two sliding seats 10 and threaded rod 5 sets up respectively with the positive and negative screw hole of positive and negative screw thread one-to-one adaptation, makes two sliding seats 10 do opposite direction motion through threaded connection, further drives two 6 reverse motions of fly leaf.
In fig. 1 and 3, an arc-shaped backing plate is mounted on the surface of the clamping plate 78, the arc-shaped backing plate is a rubber component, and anti-skid lines are arranged on the surface of the arc-shaped backing plate and mainly play a role in skid resistance.
The supporting legs are arranged at four corners of the lower surface of the base 1 in the figure 1, and the anti-slip plates are arranged below the four supporting legs and mainly play a role in anti-slip.
The working principle of the invention is as follows: the invention has simple structure and novel design, the threaded rod 5 is driven to rotate by the motor 3, the two movable seats 10 are driven to move in opposite directions through threaded connection, the two movable plates 6 are further driven to move in opposite directions, the slide block 11 is driven by the grip 12 to further drive the clamping piece 7 to move on the chute 8, thereby adapting to frequency converters with different specifications, improving the application range of the invention, the movement of the movable column 74 can be buffered by the first spring 72, the movement of the two first movable rods 76 can be buffered by the second spring 77, thereby controlling the opening angles of the two first movable rods 76, effectively buffering the pressure applied to the frequency converter, preventing the frequency converter from being excessively extruded and damaged, effectively preventing the frequency converter from shaking left and right under the action of the first spring 72 and the second spring 77, controlling the opening angles of the two second movable rods 92 by the fourth spring 94 on the buffer device 9, through the third spring 91 on two corresponding mount pads 95, can prevent that the converter from driving the workstation and doing the up-and-down motion, further can prevent that the converter from rocking and leading to the inaccurate phenomenon of test data.
Claims (7)
1. The utility model provides an automatic test fixture for converter, includes base (1) and workstation (2) that are located base (1), its characterized in that: the utility model discloses a motor (3) of being equipped with between base (1) and workstation (2) buffer (9) of symmetry, motor (3) are installed to one side of workstation (2), and the upper surface middle part position department of workstation (2) sets up fluted (4), threaded rod (5) that link to each other with motor (3) output end are installed to the inside rotation of recess (4), fly leaf (6) are installed to the upper surface symmetry of workstation (2), the below fixed mounting of two fly leaf (6) has sliding seat (10) with threaded rod (5) threaded connection, and holder (7) are installed to the equal symmetry of opposite face of two fly leaf (6).
2. The automatic test fixture for the frequency converter according to claim 1, characterized in that: holder (7) are including fixing casing (71) on fly leaf (6), one side movable mounting of casing (71) has movable post (74), the one end of activity post (74) extends to the inside of casing (71) and installs first limiting plate (73), install first spring (72) between first limiting plate (73) and casing (71), the other end fixed mounting of activity post (74) has mounting panel (75), the both ends of mounting panel (75) are rotated and are installed first movable rod (76), be equipped with second spring (77) between two first movable rod (76), and splint (78) are all installed to the front end of two first movable rod (76).
3. The automatic test fixture for the frequency converter according to claim 1, characterized in that: buffer (9) are including four mount pads (95) of difference symmetry fixing at base (1) and workstation (2) corresponding face, fixed mounting has third spring (91) between two corresponding mount pads (95), and crisscross two second movable rods (92) of installing between four mount pads (95), the both ends of two second movable rods (92) rotate with mount pad (95) respectively and are connected, and the middle part position department of two second movable rods (92) rotates through round pivot (93) and links to each other, the bilateral symmetry that two second movable rods (92) are located round pivot (93) is equipped with fourth spring (94).
4. The automatic test fixture for the frequency converter according to claim 1, characterized in that: the inside of two fly leaf (6) is seted up symmetrically and is seted up spout (8), and movable mounting has slider (11) with fixed the linking to each other of holder (7) in spout (8), and the opposite side of spout (8) installs handle (12).
5. The automatic test fixture for the frequency converter according to claim 1, characterized in that: the fixed cover in middle part position department of threaded rod (5) is equipped with the second limiting plate, and threaded rod (5) are located the both sides of second limiting plate and have seted up positive and negative screw respectively, and the junction of two sliding seats (10) and threaded rod (5) is seted up respectively with the positive and negative screw hole of positive and negative screw one-to-one adaptation.
6. The automatic test fixture for the frequency converter according to claim 2, characterized in that: the surface of the clamping plate (78) is provided with an arc-shaped base plate which is made of rubber and provided with anti-skid lines on the surface.
7. The automatic test fixture for the frequency converter according to any one of claims 1 to 6, wherein: the supporting legs are installed at four corners of the lower surface of the base (1), and the anti-slip plates are installed below the four supporting legs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011418405.9A CN112611894A (en) | 2020-12-07 | 2020-12-07 | Automatic test fixture for frequency converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011418405.9A CN112611894A (en) | 2020-12-07 | 2020-12-07 | Automatic test fixture for frequency converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112611894A true CN112611894A (en) | 2021-04-06 |
Family
ID=75229484
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011418405.9A Pending CN112611894A (en) | 2020-12-07 | 2020-12-07 | Automatic test fixture for frequency converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112611894A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023070652A1 (en) * | 2021-11-01 | 2023-05-04 | 湖南三易精工科技有限公司 | Relay contact voltage drop test fixture |
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Application publication date: 20210406 |