CN114777603A - Device and method for measuring position degree of eccentric cross shaft - Google Patents
Device and method for measuring position degree of eccentric cross shaft Download PDFInfo
- Publication number
- CN114777603A CN114777603A CN202210448617.4A CN202210448617A CN114777603A CN 114777603 A CN114777603 A CN 114777603A CN 202210448617 A CN202210448617 A CN 202210448617A CN 114777603 A CN114777603 A CN 114777603A
- Authority
- CN
- China
- Prior art keywords
- cross shaft
- gear
- eccentric cross
- support ring
- connecting plate
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title abstract description 7
- 230000005540 biological transmission Effects 0.000 claims abstract description 18
- 238000005259 measurement Methods 0.000 claims abstract description 11
- 238000010586 diagram Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The invention relates to a device and a method for measuring the position degree of an eccentric cross shaft, and belongs to the technical field of eccentric cross shafts. It mainly aims at the problem that the current eccentric cross shaft position measurement cost is high, and provides the following technical scheme: comprises a measuring table, a supporting device for supporting an eccentric cross shaft, a sliding rod and a dial indicator; the supporting device is arranged on the measuring table; the sliding rod is arranged on the measuring table, the sliding rod is positioned on one side of the supporting device in the transverse direction, and the dial indicator is arranged on the sliding rod; the supporting device comprises a supporting ring, a plug board, a connecting plate and a gear transmission mechanism for controlling the connecting plate to lift; the support ring is arranged on the measuring table, two adjusting openings are formed in the support ring along the front-back direction, and inserting openings are formed in the inner wall of the bottom of each adjusting opening; the two inserting plates are arranged in the two inserting holes in a sliding mode respectively; the connecting plate is arranged between the two inserting plates, and the bottom of the connecting plate is provided with a threaded pipe. When the device is used, the measurement cost of the position degree of the eccentric cross shaft can be reduced.
Description
Technical Field
The invention relates to the technical field of eccentric cross shafts, in particular to a device and a method for measuring the position degree of an eccentric cross shaft.
Background
An eccentric cross differs from a conventional cross in that there is a perpendicular distance of eccentricity t between one axis relative to the other. Due to the special structure of the product, the eccentric distances are different (generally, the eccentric distances have different specifications of 4mm, 5mm, 6mm, 7.5mm, 7.9mm, 9mm and the like). Chinese patent publication No. CN211147495U discloses an eccentric cross shaft position measuring device, which mainly comprises a bottom plate, a gauge stand, a dial indicator, an eccentric cross shaft, and a standard ring, wherein the height difference between the opening groove surface of the standard ring and the upper plane is consistent with the eccentric numerical value of the two axes of the eccentric cross shaft, the standard ring is placed on the bottom plate, one end of the gauge stand is connected with the bottom plate, and the other end of the gauge stand is connected with the dial indicator. Above-mentioned utility model makes eccentric cross axle two axis position degree numerical value can direct display on the amesdial, and its convenience simple to use is directly perceived, has changed the unable accurate situation that detects eccentric cross axle position degree before the company.
But above-mentioned utility model during the use, measure the position degree of different eccentric numerical value's eccentric cross, need change different standard circle, not only troublesome poeration, but also need prepare the standard circle of multiple specification, improved the measurement cost of eccentric cross position degree.
Disclosure of Invention
The invention aims to provide an eccentric cross shaft position measuring device and method which are simple to operate and can reduce the eccentric shaft position measuring cost, aiming at the problems in the background technology.
The technical scheme of the invention is as follows: on one hand, the invention provides a device for measuring the position degree of an eccentric cross shaft, which comprises a measuring table, a supporting device for supporting the eccentric cross shaft, a sliding rod and a dial indicator;
the supporting device is arranged on the measuring table; the sliding rod is arranged on the measuring table, the sliding rod is positioned on one side of the supporting device in the transverse direction, and the dial indicator is arranged on the sliding rod;
the supporting device comprises a supporting ring, a plug board, a connecting plate and a gear transmission mechanism for controlling the connecting plate to lift; the support ring is arranged on the measuring table, two adjusting openings are formed in the support ring along the front-back direction, and inserting openings are formed in the inner wall of the bottom of each adjusting opening; the two inserting plates are arranged in the two inserting holes in a sliding mode respectively; the connecting plate is arranged between the two inserting plates, and a threaded pipe is arranged at the bottom of the connecting plate; the gear transmission mechanism is arranged on the support ring and the measuring table and is positioned in the support ring.
Preferably, a side opening is formed in the inner side of the inserting opening and extends into the adjusting opening along the longitudinal direction; the inner side of the inserting plate is provided with an inserting column; jacks are arranged on the front side and the rear side of the connecting plate, the inserting plates are connected with the connecting plate in an inserting manner, and the inserting columns are located in the jacks.
Preferably, the measuring table is provided with scale marks, and the scale marks and the adjusting port are located at the same height.
Preferably, the gear transmission mechanism comprises a threaded rod, a first gear, a rotating shaft and a second gear; the threaded rod is rotationally arranged on the measuring table, is positioned in the support ring, is positioned in the threaded pipe at the upper end and is in threaded connection with the threaded pipe; the first gear is arranged on the threaded rod; the rotating shaft transversely penetrates through one side of the support ring and is rotationally connected with the support ring; the second gear is arranged at one end of the rotating shaft, which is positioned in the support ring, and the second gear is meshed with the first gear.
Preferably, the first gear and the second gear are each hypoid gears, and the axes of the first gear and the second gear are perpendicular.
Preferably, the gear transmission mechanism further comprises a knob; the knob is arranged at one end of the rotating shaft, which is positioned outside the support ring, and is a plum blossom knob.
Preferably, the device also comprises a sliding sleeve, a locking screw and a connecting rod; the sliding sleeve is sleeved on the sliding rod and is connected with the sliding rod in a sliding manner; the locking screw is arranged on the sliding sleeve; the connecting rod sets up in the horizontal one side of sliding sleeve, and the amesdial setting is in the horizontal one end of connecting rod, and the amesdial is located the strutting arrangement top.
In another aspect, the present invention provides a method for using an eccentric cross shaft position measuring device, comprising the steps of:
s1, adjusting the height of the connecting plate by a worker according to the eccentric numerical value of the eccentric cross shaft to be measured;
s2, adjusting the connecting plate to a proper position through a gear transmission mechanism, so that the height difference between the inserting plate and the upper surface of the support ring is equal to the eccentricity value of the eccentric cross shaft to be measured;
s3, respectively placing four shafts of the eccentric cross shaft on the upper surface of the support ring and the inserting plate;
s4, measuring the position degree of the eccentric cross shaft through a dial indicator;
and S5, finishing the measurement, recording data, and removing the eccentric cross shaft.
Compared with the prior art, the invention has the following beneficial technical effects:
when the position measurement of the eccentric cross shaft with different eccentric values is carried out, the height of the inserting plate is changed, and whether the inserting plate is adjusted to a proper position or not is determined through the scale marks. The operation is simple and convenient, time and labor are saved, standard rings with various specifications do not need to be prepared, the position measurement cost of the eccentric cross shaft is reduced,
the staff only need rotate the knob, and the knob drives the pivot and rotates to drive second gear revolve, and then drive first gear revolve, and then drive the threaded rod and rotate, and then drive the screwed pipe and rotate, and then just can control the lift of connecting plate, easy operation, labour saving and time saving has improved the staff greatly and has measured efficiency to the position degree of different eccentric numerical value's eccentric cross axle, and the practicality is strong.
Drawings
Fig. 1 is a partial sectional view of an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a supporting device according to an embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a support ring according to an embodiment of the present invention.
Fig. 4 is a schematic structural diagram of two inserting plates connected by a connecting plate in an embodiment of the invention.
Reference numerals: 1. a measuring table; 2. a support ring; 201. an adjustment port; 202. a socket; 203. a side port; 204. scale lines; 3. inserting plates; 301. inserting a column; 4. a connecting plate; 401. a jack; 5. a threaded pipe; 6. a threaded rod; 7. a first gear; 8. a rotating shaft; 9. a second gear; 10. a knob; 11. a slide bar; 12. a sliding sleeve; 13. locking the screw; 14. a connecting rod; 15. a dial indicator; 16. an eccentric cross shaft.
Detailed Description
Example one
As shown in FIG. 1, the device for measuring the position degree of an eccentric cross shaft provided by the invention comprises a measuring table 1, a supporting device for supporting an eccentric cross shaft 16, a sliding rod 11, a sliding sleeve 12, a locking screw 13, a connecting rod 14 and a dial indicator 15. The support device is arranged on the measuring table 1. The slide bar 11 is arranged on the measuring table 1, the slide bar 11 is positioned on one side of the support device in the transverse direction, and the dial indicator 15 is arranged on the slide bar 11. The sliding sleeve 12 is sleeved on the sliding rod 11, the sliding sleeve 12 is in sliding connection with the sliding rod 11, the locking screw 13 is arranged on the sliding sleeve 12, the connecting rod 14 is arranged on one side of the sliding sleeve 12 in the transverse direction, the dial indicator 15 is arranged at one end of the connecting rod 14 in the transverse direction, the dial indicator 15 is located above the supporting device, the height of the sliding sleeve 12 can be adjusted by unscrewing the locking screw 13, and therefore the measurement of the position degree of the eccentric cross shaft 16 is facilitated for workers.
As shown in fig. 2-4, the supporting device comprises a supporting ring 2, an inserting plate 3, a connecting plate 4 and a gear transmission mechanism for controlling the lifting of the connecting plate 4. Support ring 2 sets up on measuring table 1, be provided with two regulation mouths 201 along the fore-and-aft direction on the support ring 2, be provided with socket 202 on the inner wall of regulation mouth 201 bottom, socket 202 inboard is provided with side mouth 203, side mouth 203 is along longitudinal extension to in the regulation mouth 201, be provided with scale mark 204 on the measuring table 1, scale mark 204 and regulation mouth 201 are in same height, through setting up scale mark 204, can make things convenient for the audio-visual height-adjusting who knows picture peg 3 of staff, thereby audio-visual difference in height between 3 upper surfaces of picture peg and the 2 upper surfaces of support ring learn. The number of the insert plates 3 is two, the two insert plates 3 are respectively arranged in the two inserting holes 202 in a sliding manner, and the inner sides of the insert plates 3 are provided with insert posts 301. The connecting plate 4 is arranged between the two inserting plates 3, and the bottom of the connecting plate 4 is provided with a threaded pipe 5. Both sides all are provided with jack 401 around the connecting plate 4, and picture peg 3 and connecting plate 4 plug-in connection insert post 301 and lie in jack 401, can make things convenient for two picture pegs 3 and connecting plate 4's installation and dismantlement, and then timely change when can take place wearing and tearing at picture peg 3 upper surface avoids influencing the position degree measurement of eccentric cross 16. The gear transmission mechanism is arranged on the support ring 2 and the measuring table 1 and is positioned in the support ring 2.
When the device is used, a worker adjusts the height of the connecting plate 4 according to the eccentric numerical value of the eccentric cross shaft 16 to be measured, and adjusts the connecting plate 4 to a proper position through the gear transmission mechanism, so that the height difference between the upper surfaces of the inserting plate 3 and the support ring 2 is equal to the eccentric numerical value of the eccentric cross shaft 16 to be measured. The four shafts of the eccentric cross 16 are then placed on the upper surface of the support ring 2 and the insert plate 3, respectively. The position of the eccentric cross 16 can be measured by the dial indicator 15. When the eccentric cross shaft 16 with different eccentric values is replaced for measurement, a worker only needs to heighten or lower the connecting plate 4 through the gear transmission mechanism so as to drive the inserting plate 3 to ascend and descend, and then the height difference between the upper surface of the inserting plate 3 and the upper surface of the support ring 2 is changed.
When the device measures the position degree of the eccentric cross shaft 16 with different eccentric values, the height of the inserting plate 3 is changed, and whether the inserting plate 3 is adjusted to a proper position or not is determined through the scale marks 204. The method is simple and convenient to operate, time-saving and labor-saving, standard rings of various specifications do not need to be prepared, and the position degree measuring cost of the eccentric cross shaft 16 is reduced.
Example two
As shown in fig. 1, compared with the first embodiment, the gear transmission mechanism in this embodiment includes a threaded rod 6, a first gear 7, a rotating shaft 8, a second gear 9, and a knob 10. The threaded rod 6 is rotatably arranged on the measuring table 1, the threaded rod 6 is positioned in the support ring 2, the upper end of the threaded rod 6 is positioned in the threaded pipe 5, and the threaded rod 6 is in threaded connection with the threaded pipe 5. A first gear wheel 7 is arranged on the threaded rod 6. The rotating shaft 8 transversely penetrates through one side of the support ring 2, and the rotating shaft 8 is rotatably connected with the support ring 2. The second gear 9 is arranged at one end of the rotating shaft 8 positioned in the support ring 2, and the second gear 9 is in meshed connection with the first gear 7. The first gear 7 and the second gear 9 are hypoid gears, and the axes of the first gear 7 and the second gear 9 are vertical, so that the stability of transmission between the first gear 7 and the second gear 9 can be ensured. The knob 10 sets up the one end that is located the lock ring 2 outside the pivot 8, and the knob 10 is the plum blossom knob, through setting up the knob 10, rotates knob 10 and drives pivot 8 and rotate to realize the lift of connecting plate 4, operate convenient simple more, facilitate the use.
When this embodiment uses, the staff only need rotate knob 10, and knob 10 drives pivot 8 and rotates to drive second gear 9 and rotate, and then drive first gear 7 and rotate, and then drive threaded rod 6 and rotate, and then drive screwed pipe 5 and rotate, and then just can control the lift of connecting plate 4, easy operation, labour saving and time saving has improved the staff greatly and has measured efficiency to the position degree of different eccentric numerical value's eccentric cross 16, and the practicality is strong.
The embodiments of the present invention have been described in detail with reference to the drawings, but the present invention is not limited thereto, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.
Claims (8)
1. The device for measuring the position degree of the eccentric cross shaft is characterized by comprising a measuring table (1), a supporting device for supporting the eccentric cross shaft (16), a sliding rod (11) and a dial indicator (15);
the supporting device is arranged on the measuring table (1); the sliding rod (11) is arranged on the measuring table (1), the sliding rod (11) is located on one side of the supporting device in the transverse direction, and the dial indicator (15) is arranged on the sliding rod (11);
the supporting device comprises a supporting ring (2), an inserting plate (3), a connecting plate (4) and a gear transmission mechanism for controlling the connecting plate (4) to lift; the support ring (2) is arranged on the measuring table (1), two adjusting openings (201) are formed in the support ring (2) along the front-back direction, and inserting openings (202) are formed in the inner wall of the bottom of each adjusting opening (201); two plug boards (3) are arranged, and the two plug boards (3) are respectively arranged in the two sockets (202) in a sliding manner; the connecting plate (4) is arranged between the two inserting plates (3), and the bottom of the connecting plate (4) is provided with a threaded pipe (5); the gear transmission mechanism is arranged on the support ring (2) and the measuring table (1), and the gear transmission mechanism is positioned in the support ring (2).
2. The eccentric cross shaft position degree measuring device according to the claim 1, characterized in that the side port (203) is arranged inside the socket (202), the side port (203) extends into the adjusting port (201) along the longitudinal direction; the inner side of the inserting plate (3) is provided with an inserting column (301); jacks (401) are arranged on the front side and the rear side of the connecting plate (4), the inserting plate (3) is connected with the connecting plate (4) in an inserting mode, and the inserting columns (301) are located in the jacks (401).
3. The eccentric cross shaft position degree measuring device according to claim 1, characterized in that scale marks (204) are arranged on the measuring table (1), and the scale marks (204) are at the same height with the adjusting port (201).
4. The eccentric cross shaft position degree measuring device according to claim 1, wherein the gear transmission mechanism comprises a threaded rod (6), a first gear (7), a rotating shaft (8) and a second gear (9); the threaded rod (6) is rotatably arranged on the measuring table (1), the threaded rod (6) is positioned in the support ring (2), the upper end of the threaded rod (6) is positioned in the threaded pipe (5), and the threaded rod (6) is in threaded connection with the threaded pipe (5); the first gear (7) is arranged on the threaded rod (6); the rotating shaft (8) transversely penetrates through one side of the support ring (2), and the rotating shaft (8) is rotatably connected with the support ring (2); the second gear (9) is arranged at one end of the rotating shaft (8) in the support ring (2), and the second gear (9) is meshed with the first gear (7).
5. An eccentric cross shaft position measuring device according to claim 4, characterized in that the first gear (7) and the second gear (9) are hypoid gears, and the first gear (7) and the second gear (9) are perpendicular in axis.
6. An eccentric cross shaft position degree measuring device according to claim 5, characterized in that the gear transmission mechanism further comprises a knob (10); the knob (10) is arranged at one end of the rotating shaft (8) which is positioned outside the support ring (2), and the knob (10) is a plum blossom knob.
7. The eccentric cross shaft position degree measuring device according to claim 1, further comprising a sliding sleeve (12), a locking screw (13) and a connecting rod (14); the sliding sleeve (12) is sleeved on the sliding rod (11), and the sliding sleeve (12) is connected with the sliding rod (11) in a sliding manner; the locking screw (13) is arranged on the sliding sleeve (12); the connecting rod (14) is arranged on one transverse side of the sliding sleeve (12), the dial indicator (15) is arranged at one transverse end of the connecting rod (14), and the dial indicator (15) is located above the supporting device.
8. Use of the eccentric cross shaft position measurement device according to any of claims 1-7, characterized by the following steps:
s1, adjusting the height of the connecting plate (4) by a worker according to the eccentric numerical value of the eccentric cross shaft (16) to be measured;
s2, adjusting the connecting plate (4) to a proper position through a gear transmission mechanism, so that the height difference between the inserting plate (3) and the upper surface of the support ring (2) is equal to the eccentric numerical value of the eccentric cross shaft (16) to be measured;
s3, four shafts of the eccentric cross shaft (16) are respectively placed on the upper surface of the support ring (2) and the inserting plate (3);
s4, measuring the position degree of the eccentric cross shaft (16) through a dial indicator (15);
and S5, finishing the measurement, recording data, and removing the eccentric cross shaft (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210448617.4A CN114777603B (en) | 2022-04-27 | 2022-04-27 | Eccentric cross shaft position degree measuring device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210448617.4A CN114777603B (en) | 2022-04-27 | 2022-04-27 | Eccentric cross shaft position degree measuring device and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114777603A true CN114777603A (en) | 2022-07-22 |
| CN114777603B CN114777603B (en) | 2024-04-09 |
Family
ID=82433034
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210448617.4A Active CN114777603B (en) | 2022-04-27 | 2022-04-27 | Eccentric cross shaft position degree measuring device and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114777603B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3092158U (en) * | 2002-08-17 | 2003-02-28 | 新次郎 小野 | Ball slide type cross joint |
| CN102200424A (en) * | 2011-01-19 | 2011-09-28 | 万向钱潮股份有限公司 | Device and method for measuring verticality of cross shaft |
| CN102200420A (en) * | 2010-07-20 | 2011-09-28 | 万向钱潮股份有限公司 | Position detector for differential mechanism spider and detecting method thereof |
| CN104764390A (en) * | 2015-03-26 | 2015-07-08 | 宁波祥瑞机械有限公司 | Measurement tool for measuring symmetry of eccentric shaft |
| CN104772636A (en) * | 2015-04-13 | 2015-07-15 | 万向钱潮股份有限公司 | Machining fixture for eccentric cross shaft and method thereof |
| CN111307104A (en) * | 2020-01-09 | 2020-06-19 | 台州学院 | Eccentric shaft detection device and detection method |
| CN211147495U (en) * | 2019-10-29 | 2020-07-31 | 万向钱潮股份有限公司 | Eccentric cross shaft position measuring device |
| CN214237830U (en) * | 2020-12-17 | 2021-09-21 | 浙江高领新能源科技有限公司 | Eccentric shaft detection and positioning tool |
| CN113720242A (en) * | 2021-09-29 | 2021-11-30 | 江苏神通核能装备有限公司 | Eccentric measuring device of three eccentric butterfly valve body |
| CN216327816U (en) * | 2021-11-13 | 2022-04-19 | 靖江先锋半导体科技有限公司 | Novel detect eccentric frock of work piece |
-
2022
- 2022-04-27 CN CN202210448617.4A patent/CN114777603B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3092158U (en) * | 2002-08-17 | 2003-02-28 | 新次郎 小野 | Ball slide type cross joint |
| CN102200420A (en) * | 2010-07-20 | 2011-09-28 | 万向钱潮股份有限公司 | Position detector for differential mechanism spider and detecting method thereof |
| CN102200424A (en) * | 2011-01-19 | 2011-09-28 | 万向钱潮股份有限公司 | Device and method for measuring verticality of cross shaft |
| CN104764390A (en) * | 2015-03-26 | 2015-07-08 | 宁波祥瑞机械有限公司 | Measurement tool for measuring symmetry of eccentric shaft |
| CN104772636A (en) * | 2015-04-13 | 2015-07-15 | 万向钱潮股份有限公司 | Machining fixture for eccentric cross shaft and method thereof |
| CN211147495U (en) * | 2019-10-29 | 2020-07-31 | 万向钱潮股份有限公司 | Eccentric cross shaft position measuring device |
| CN111307104A (en) * | 2020-01-09 | 2020-06-19 | 台州学院 | Eccentric shaft detection device and detection method |
| CN214237830U (en) * | 2020-12-17 | 2021-09-21 | 浙江高领新能源科技有限公司 | Eccentric shaft detection and positioning tool |
| CN113720242A (en) * | 2021-09-29 | 2021-11-30 | 江苏神通核能装备有限公司 | Eccentric measuring device of three eccentric butterfly valve body |
| CN216327816U (en) * | 2021-11-13 | 2022-04-19 | 靖江先锋半导体科技有限公司 | Novel detect eccentric frock of work piece |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114777603B (en) | 2024-04-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202820397U (en) | Lifting chair | |
| CN114777603A (en) | Device and method for measuring position degree of eccentric cross shaft | |
| CN214119472U (en) | Measuring instrument support for real estate surveying and mapping | |
| CN213067909U (en) | Electronic balance | |
| CN213123487U (en) | Aperture formation of image presentation device for physical teaching | |
| CN107351576A (en) | A kind of Teaching of Economics bar chart plotting unit | |
| CN206831114U (en) | Hang television stand | |
| CN218002532U (en) | House deformation vision calibration detection device | |
| CN211629504U (en) | Interval-adjustable inserting piece tool | |
| CN219201265U (en) | Surface tension appearance convenient to adjust | |
| CN201066277Y (en) | Slope measuring instrument | |
| CN221102823U (en) | Auxiliary leveling device for installation of power distribution cabinet | |
| CN210039613U (en) | Guzheng musical instrument frame | |
| CN218955776U (en) | A sighting rod for improving mapping accuracy | |
| CN221196723U (en) | Fixed point marking device for mapping | |
| CN220136336U (en) | Land gradient measuring device | |
| CN221146065U (en) | Level gauge for decoration and fitment | |
| CN218804214U (en) | Frame type hydraulic machine with high machining precision and high stability | |
| CN218955991U (en) | Calibrating device for mechanical instrument metering | |
| CN213555104U (en) | Sports teaching exercise multifunctional combined apparatus | |
| CN207503494U (en) | A kind of science of law classroom case creation display board | |
| CN219387197U (en) | Template connecting frame with stable connection | |
| CN220893967U (en) | Regulation formula pressure testing machine | |
| CN219890349U (en) | Building engineering technique measuring device | |
| CN219367277U (en) | Land measurement balancing device for building construction |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |