CN111879336B - Light leveling torsion-preventing mechanism of precision measurement equipment - Google Patents
Light leveling torsion-preventing mechanism of precision measurement equipment Download PDFInfo
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- CN111879336B CN111879336B CN202010730872.9A CN202010730872A CN111879336B CN 111879336 B CN111879336 B CN 111879336B CN 202010730872 A CN202010730872 A CN 202010730872A CN 111879336 B CN111879336 B CN 111879336B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C25/00—Manufacturing, calibrating, cleaning, or repairing instruments or devices referred to in the other groups of this subclass
- G01C25/005—Manufacturing, calibrating, cleaning, or repairing instruments or devices referred to in the other groups of this subclass initial alignment, calibration or starting-up of inertial devices
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Abstract
The invention discloses a light leveling torsion-preventing mechanism of precision measurement equipment, which comprises a base; a support plate; the leveling mechanisms are arranged between the base and the supporting disc; the leveling mechanism comprises an anti-backlash nut, a leveling screw, a leveling hand wheel, a compression spring and a locking nut assembly, wherein the leveling hand wheel is sleeved on the leveling screw, one end of the leveling screw is installed in the base through the anti-backlash nut, the other end of the leveling screw is installed in the supporting plate through the locking nut assembly, the compression spring is sleeved outside the leveling screw and limited through the anti-backlash nut and the screw sleeve, the leveling hand wheel drives the leveling screw to rotate, and the leveling screw rotates to sequentially drive the anti-backlash nut and the base to move up and down. The leveling torsion-preventing mechanism can ensure the overall stability of the leveling structure, prevent the overall torsion of the equipment caused by the action of external force, bring adverse effects to the measurement result, reduce the moment when the leveling hand wheel rotates, ensure that the leveling mechanism has a more compact structure and rotates more lightly.
Description
Technical Field
The invention belongs to the technical field of engineering measurement and detection, and particularly relates to a light leveling torsion-preventing mechanism of precision measurement equipment.
Background
The gyroscope can point out the true north direction at any point of the ground, a mine or a tunnel within 75 degrees of the north and south latitude of the geography, and has wide application in the fields of engineering construction measurement, military aiming and the like. The core part of the pendulum gyroscope is a gyroscope sensitive part, and the most important ring of the gyroscope in the preparation process before working is to level the instrument with high precision, namely, ensure that a suspension belt supporting the gyroscope sensitive part is strictly vertical to the ground theory after the instrument is statically placed. The height of leveling precision can influence the swinging effect of the gyro sensitive part in the working process, and can directly influence the measuring precision of the gyroscope.
After the gyroscope automatic measurement is finished, the target point needs to be manually subjected to forward and backward sighting reading (reading of horizontal angle value) through the overhead theodolite. However, in the switching process of the positive mirror and the inverse mirror, the theodolite needs to rotate in the horizontal direction, and because the theodolite base is fixedly connected with the gyroscope upper cover, the gyroscope main body is easily driven to twist due to the instability of the gyroscope self leveling mechanism in the process of rotating the theodolite, so that the reading of the horizontal angle of the theodolite is influenced, and the final measured value of the gyroscope is further influenced.
The main mode of current gyroscope leveling is screw nut transmission pair, but mainly adopts slotting at two ends of metal nut when processing the clearance elimination problem between screw and nut, so that the metal nut is deformed when being acted by the external force, and is tightly attached to the screw, thereby realizing the clearance elimination purpose. The biggest disadvantage of doing so is that the deformed metal nut and the screw rod are in rigid contact, if the metal nut is too tightly pressed during rotation, abrasion is easy to occur, irregular damage is caused to both internal threads and external threads, and the hand wheel is hard to rotate; if the pressure is too loose, the anti-backlash function cannot be well achieved, so that the leveling mechanism is integrally twisted when the theodolite rotates, the horizontal angle reading of the theodolite is further influenced, and the final measured value of the gyroscope is influenced.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a light leveling torsion-preventing mechanism of precision measurement equipment, which adopts a novel screw nut clearance eliminating technology and a light small friction rotation and self-position alignment technology.
In order to solve the technical problems, the technical scheme of the invention is as follows: a light leveling torsion-proof mechanism for precision measurement equipment comprises,
a base;
a support plate;
the leveling mechanisms are arranged between the base and the supporting disc;
the leveling mechanism comprises an anti-backlash nut, a leveling screw rod, a leveling hand wheel, a screw sleeve, a compression spring and a locking nut component, wherein the leveling hand wheel is sleeved on the leveling screw rod, one end of the leveling screw rod is installed in a base through the anti-backlash nut, the other end of the leveling screw rod is installed in a supporting plate through the locking nut component, the screw sleeve is in threaded connection with the leveling screw rod, one end of the screw sleeve is located in the leveling hand wheel, the other end of the screw sleeve is in threaded connection with the base and sleeved on the outer side of the anti-backlash nut, the compression spring is sleeved outside the leveling screw rod and limited through the anti-backlash nut and the screw sleeve, the leveling hand wheel drives the leveling screw rod to rotate, and the leveling screw rod rotates to sequentially drive the anti-backlash nut and the base to move up and down.
Preferably, the number of leveling mechanisms is three.
Preferably, the lock nut assembly comprises a lock nut, a compression sheet, a bearing seat and a bearing, wherein a first boss and a second boss are sequentially arranged at one end, close to a supporting disc, of the leveling screw, the bearing seat and the compression sheet are sequentially arranged from inside to outside, the extension end of the compression sheet is fixedly connected to the supporting disc, the bearing is sleeved on the outer side of the first boss, the bearing seat is provided with a first clamping surface, the first clamping surface of the bearing seat is attached to the end faces of the leveling screw and the bearing, and the lock nut is sleeved on the outer side of the second boss and compresses the bearing.
Preferably, the anti-backlash nut further comprises a compression ring, a first groove is formed in the anti-backlash nut, and a protrusion clamped with the first groove is arranged below the compression ring.
Preferably, the leveling device further comprises a contact pad structure, wherein the contact pad structure comprises a contact pad and a steel ball, the contact pad is arranged in the supporting disc, and the steel ball is positioned between one end of the leveling screw close to the locking nut and the contact pad.
Preferably, the contact pad is provided with a second groove matched with the steel ball, and the shape of the second groove is a taper hole, a groove and a plane respectively.
Preferably, the leveling device comprises a shaft end check ring and a backup nut sleeved on the leveling screw, wherein the backup nut is in fit with the inner bottom surface of the leveling hand wheel, and the shaft end check ring is arranged at one end, far away from the contact pad structure, of the leveling screw.
Preferably, the screw sleeve is further provided with a tightening screw which extends into the base in the radial direction and tightens the screw sleeve.
Preferably, the device further comprises a tensioning screw which extends into the support plate and the pressing piece in the axial direction and is fastened.
Preferably, the anti-backlash nut is made of a non-metal material.
Compared with the prior art, the invention has the advantages that:
(1) The novel screw nut gap eliminating technology is adopted, so that the problem of high-precision leveling of a gyroscope (or other precise measuring equipment) during working is solved, the integral stability of a leveling structure is ensured, the integral torsion of the equipment caused by the action of external force is prevented, and the adverse effect on a measuring result is brought;
(2) According to the invention, the bottom contact pad structure of the leveling screw is changed again, so that the self-position alignment is realized, the bearing and the steel ball are additionally arranged at the lower part of the leveling screw, the sliding friction caused by the traditional rigid compaction mode is replaced by rolling friction, and the moment when the leveling hand wheel rotates is reduced, so that the leveling mechanism is more compact and stable in structure and lighter in rotation;
(3) The clearance eliminating nut is made of nonmetallic materials, so that rigid contact with a screw is avoided, and friction and abrasion between the screw and the nut are reduced; meanwhile, axial and radial bidirectional clearance elimination is carried out on the screw nut, so that shaking between the leveling screw and the screw sleeve can be greatly reduced, the overall stability of the leveling mechanism is improved, and the phenomenon that the gyroscope main body is driven to twist integrally when the theodolite is rotated can be avoided;
(4) The invention has simple structure, safety and reliability, reduces the moment when the leveling hand wheel rotates, thereby ensuring that the leveling mechanism has more compact and stable structure and lighter rotation.
Drawings
FIG. 1 is a schematic diagram of a front view structure of a light leveling torsion-preventing mechanism of precision measurement equipment;
FIG. 2, a cross-sectional view B-B of FIG. 1 of the present invention;
FIG. 3, a cross-sectional view A-A of FIG. 2 of the present invention;
FIG. 4 is an enlarged schematic view of the structure of FIG. 3 of the present invention;
FIG. 5 is a schematic diagram of the structure of a contact pad A and a steel ball in a light leveling torsion-preventing mechanism of precision measurement equipment;
FIG. 6 is a schematic diagram of the structure of a contact pad B and a steel ball in a light leveling torsion-preventing mechanism of precision measurement equipment;
FIG. 7 is a schematic diagram of the structure of a contact pad C and a steel ball in a light leveling torsion-preventing mechanism of precision measurement equipment;
reference numerals illustrate:
1-a base;
2-leveling mechanism;
3-supporting disc, 3-1-first boss, 3-2-second boss;
4-contact pad, 4-1-contact pad A, 4-2-contact pad B, 4-3-contact pad C;
the device comprises a 5-compression piece, a 6-bearing seat, a 7-backup nut, an 8-screw sleeve, a 9-clearance elimination nut, a 10-compression ring, an 11-leveling screw rod, a 12-compression spring, a 13-leveling hand wheel, a 14-locking nut, a 15-tightening screw, a 16-steel ball, a 17-bearing, a 18-jacking screw and a 19-shaft end retainer ring.
Detailed Description
The following describes specific embodiments of the present invention with reference to examples:
it should be noted that the structures, proportions, sizes and the like illustrated in the present specification are used for being understood and read by those skilled in the art in combination with the disclosure of the present invention, and are not intended to limit the applicable limitations of the present invention, and any structural modifications, proportional changes or size adjustments should still fall within the scope of the disclosure of the present invention without affecting the efficacy and achievement of the present invention.
Also, the terms such as "upper," "lower," "left," "right," "middle," and "a" and the like recited in the present specification are merely for descriptive purposes and are not intended to limit the scope of the invention, but are intended to provide relative positional changes or modifications without materially altering the technical context in which the invention may be practiced.
Example 1
As shown in fig. 1-7, a lightweight leveling torsion preventing mechanism for precision measuring equipment, comprising,
a base 1;
a support plate 3;
a plurality of leveling mechanisms 2 installed between the base 1 and the supporting plate 3;
the leveling mechanism 2 comprises an anti-backlash nut 9, a leveling screw rod 11, a leveling hand wheel 13, a screw sleeve 8, a compression spring 12 and a locking nut component, wherein the leveling hand wheel 13 is sleeved on the leveling screw rod 11, one end of the leveling screw rod 11 is installed in the base 1 through the anti-backlash nut 9, the other end of the leveling screw rod 11 is installed in the supporting plate 3 through the locking nut component, the screw sleeve 8 is in threaded connection with the leveling screw rod 11, one end of the screw sleeve 8 is located in the leveling hand wheel 13, the other end of the screw sleeve 8 is in threaded connection with the base 1 and sleeved outside the anti-backlash nut 9, the compression spring 12 is sleeved outside the leveling screw rod 11 and limited through the anti-backlash nut 9 and the screw sleeve 8, the leveling hand wheel 13 drives the leveling screw rod 11 to rotate, and the leveling screw rod 11 is sequentially driven to move up and down through the anti-backlash nut 9 and the base 1.
Specifically, the number of leveling mechanisms is three.
Specifically, the lock nut assembly comprises a lock nut 14, a compression plate 5, a bearing seat 6 and a bearing 17, wherein a first boss 3-1 and a second boss 3-2 are sequentially arranged at one end, close to the supporting disc 3, of the leveling screw 11, the bearing 17, the bearing seat 6 and the compression plate 5 are sequentially arranged from inside to outside, the extending end of the compression plate 5 is fixedly connected to the supporting disc 3, the bearing 17 is sleeved on the outer side of the first boss 3-1, the bearing seat 6 is provided with a first clamping surface, the first clamping surface of the bearing seat 6 is attached to the end faces of the leveling screw 11 and the bearing 17, and the lock nut 14 is sleeved on the outer side of the second boss 3-2 and compresses the bearing 17.
Specifically, still include clamp ring 10, set up first recess on the anti-backlash nut 9, the clamp ring 10 has the protruding with first recess joint.
Specifically, the leveling device further comprises a contact pad structure, the contact pad structure comprises a contact pad 4 and a steel ball 16 which are in contact, the contact pad 4 is arranged in the supporting disc 3, and the steel ball 16 is positioned between one end of the leveling screw 11 close to the locking nut 14 and the contact pad 4.
Specifically, the contact pad 4 is provided with a second groove matched with the steel ball 16, the shape of the second groove is a taper hole, a groove and a plane, and the shape of the second groove is a contact pad A4-1, a contact pad B4-2 and a contact pad C4-3 correspondingly. After the steel ball 16 at the bottom end of the first leveling screw 11 is located on the contact pad A4-1 (taper hole), the three degrees of freedom of the leveling screw 11 only remain two degrees of freedom of integral rotation and integral up-and-down movement around a central axis of the leveling screw 11; after the steel ball 16 at the bottom end of the second leveling screw 11 is located on the contact pad B4-2 (groove), the freedom of the rotation of the whole three screws around the shaft is limited, and only one freedom of the up-and-down movement of the whole is remained; the third leveling screw 11 is a plane surface, so that the leveling screw can be freely located at a proper position according to the actual screwing position of the third leveling screw and the screw sleeve 8, self-position alignment is realized, the defect that the leveling screw and the nut are too hard to be screwed or too tight due to the traditional forced limiting structure is prevented, and when the supporting disc 3 and the pressing piece 5 are connected and tensioned by the tensioning screw 15, all degrees of freedom are limited.
By additionally arranging the bearing 17 and the steel ball 16 at the lower part of the leveling screw 11, the sliding friction caused by the traditional rigid compaction mode is replaced by rolling friction, so that the moment when the leveling hand wheel 13 rotates can be reduced, and the leveling mechanism is more compact and stable in structure and lighter in rotation. Secondly, three leveling screw bottom contact pad structures adopt taper hole, slot and planar structure respectively, have not only restricted three screw rod whole pivoted degree of freedom, can carry out self-position alignment one by one when turning with the screw cap moreover, are different from the defect that the leveling screw rod that traditional full taper hole or full slot force limit structure lead to when turning with the nut is because the position is wrong and is led to and turn into too tight else.
Specifically, the anti-backlash nut 9 is made of a nonmetallic material. The non-metal material is adopted, so that rigid contact with the leveling screw 11 is avoided, and friction and abrasion between screw nuts are reduced; meanwhile, axial and radial bidirectional clearance elimination is carried out on the screw nut, so that shaking between the leveling screw 11 and the screw sleeve 8 can be greatly reduced, the overall stability of the leveling mechanism is improved, and the phenomenon that the gyroscope main body is driven to twist integrally when the theodolite is rotated can be avoided.
The principle of eliminating gaps of the screw nut is as follows:
two sections of independent nuts (the clearance eliminating nuts 9 and threads at the lower ends of the screw sleeves 8) are screwed with the leveling screw 11, and the two sections of nuts are spread towards two ends along the axial direction of the leveling screw 11 by using the compression springs 12, so that the threaded surfaces of the screw nuts are completely attached to each other, and the axial clearance eliminating purpose is realized; secondly, the anti-backlash nut 9 is made of non-metal (nylon) materials, the two end dimensions are not consistent to form a small taper, and one end with a slightly larger dimension is provided with a quarter groove, so that the anti-backlash nut is installed into the screw sleeve 8 with a fixed inner hole dimension and is extruded and deformed under the action of centripetal force when being screwed with the leveling screw 11, and is kept radially and tightly held and attached with the leveling screw 11, thereby realizing the radial anti-backlash purpose.
The tightening ring 10 is screwed to drive the anti-backlash nut 9 to rotate about 1/2 turn after being screwed into the screw sleeve 8, the top edge of the screw sleeve 8 is tightened, and the tightening ring 10 is fixed (the purpose is to ensure that the tightening ring 10 and the anti-backlash nut 9 are in a disengaged state, so that the spring force only acts on the anti-backlash nut 9, and the tightening ring 10 is fixed by the edge to ensure that the anti-backlash nut 9 does not rotate under the external force). At the moment, the compression spring 12 is in a compression and tightening state, and the screw sleeve 8 and the clearance eliminating nut 9 are propped against the two ends along the axial direction of the leveling screw 11, so that axial clearance elimination is realized; the top (large-size end) of the anti-backlash nut 9 completely enters the screw sleeve 8 at the moment and is extruded and deformed under the action of centripetal force, so that the anti-backlash nut is tightly held and attached with the leveling screw 11 in the radial direction, the radial anti-backlash purpose is realized, and finally the shaft end check rings 19 are respectively clamped in grooves at the top of the three leveling screw.
Specifically, the screw sleeve 8 is also screwed with the tightening screw 18, and the tightening screw 18 extends into the base 1 in the radial direction.
Specifically, the leveling device comprises a shaft end check ring 19 and a backup nut 7 sleeved on the leveling screw 11, wherein the backup nut 7 is attached to the inner bottom surface of the leveling hand wheel 13, and the shaft end check ring 19 is arranged at one end of the leveling screw 11 far away from the contact pad structure. The lower end of the leveling screw 11 is sleeved with a compressing sheet 5; after the bearing 17 is installed in the bearing seat 6, the bearing is integrally installed at the step of the lower end of the leveling screw 11 and is tightly prepared by the locking nut 14.
In particular, a tightening screw 15 is also included, the tightening screw 15 extending axially into the support disc 3 and the compression plate 5 and being tightened. After the three steel balls 16 are located on the three contact pads 4 from the alignment positions respectively, the support disc 3 and the compression sheet 5 are connected and tensioned by six tensioning screws 15, so that the integral assembly connection of the leveling anti-torsion mechanism is realized.
The working principle of the invention is as follows:
as shown in figures 1 to 7 of the drawings,
the leveling hand wheel 13 is installed from the top end of the leveling screw 11 until the leveling screw is screwed to the bottommost part and then screwed, the backup nut 7 is installed from the top end in the same way, the leveling hand wheel 13 is screwed to the bottommost part and then is backed up, and the lower end of the leveling screw 11 is sleeved with the pressing piece 5; after the bearing 17 is installed in the bearing seat 6, the bearing is integrally installed at the step of the lower end of the leveling screw 11 and is tightly prepared by the locking nut 14. The screw sleeve 8 is screwed into the bottom of the base 1, and is tightly propped by the propping screw 18 after being screwed. The leveling hand wheel 13 is rotated to drive the leveling screw 11 to be screwed in from the bottom of the screw sleeve 8, then the compression spring 12 is sleeved in from the upper end in sequence, the gap eliminating nut 9 is screwed in, the compression ring 10 is sleeved in, wherein two protrusions at the lower end of the compression ring 10 are sleeved in two grooves at the top (large-size end) of the gap eliminating nut 9, the compression ring 10 is rotated by forceps to drive the gap eliminating nut 9 to be gradually screwed in from top to bottom into the leveling screw 11 and the screw sleeve 8 until the lower step end face of the compression ring 10 is attached to the upper step end face of the screw sleeve 8.
At this time, the tightening ring 10 is continuously screwed to drive the anti-backlash nut 9 to rotate about 1/2 turn of the screw sleeve 8, then the top edge of the screw sleeve 8 is tightened, and the tightening ring 10 is fixed (the purpose is to ensure that the tightening ring 10 and the anti-backlash nut 9 are in a disengaged state, so that the spring force only acts on the anti-backlash nut 9, and the tightening ring 10 is fixed by tightening to ensure that the anti-backlash nut 9 does not rotate under the action of external force). At the moment, the compression spring 12 is in a compression and tightening state, and the screw sleeve 8 and the clearance eliminating nut 9 are propped against the two ends along the axial direction of the leveling screw 11, so that axial clearance elimination is realized; the top (large-size end) of the anti-backlash nut 9 completely enters the screw sleeve 8 at the moment and is extruded and deformed under the action of centripetal force, so that the anti-backlash nut is tightly held and attached with the leveling screw 11 in the radial direction, the radial anti-backlash purpose is realized, and finally the shaft end check rings 19 are respectively clamped in grooves at the top of the three leveling screw.
Three contact pads 4 are fitted in turn into the support plate 3, with the assurance that the groove direction of the contact pad B4-2 is directed in the direction of the center of the support plate 3. After the steel balls 16 are stuck to the conical holes at the bottom ends of the leveling screws 11 by using lubricating grease, the leveling mechanism 2 is integrally assembled in the supporting disc 3 together with the pressing piece 5 and the base 1. After the three steel balls 16 are located on the three contact pads 4 from the alignment positions respectively, the support disc 3 and the compression sheet 5 are connected and tensioned by six tensioning screws 15, so that the integral assembly connection of the leveling anti-torsion mechanism is realized.
Three leveling screws 11 self-position alignment principle:
after the steel ball 16 at the bottom end of the first leveling screw 11 is located on the contact pad A4-1 (taper hole), only two degrees of freedom of the three screw, namely, the three screw wholly rotates around a central shaft of the screw and wholly moves up and down, remain; after the steel ball 16 at the bottom end of the second leveling screw 11 is located on the contact pad B4-2 (centripetal groove), the freedom of the rotation of the whole three screws around the shaft is limited, and only one freedom of the up-and-down movement of the whole is remained; the third leveling screw 11 is a plane surface, so that the leveling screw can be freely located at a proper position according to the actual screwing position of the leveling screw and the screw sleeve 8, self-position alignment is realized, and the defect that the leveling screw and the nut are too hard or too tight due to the traditional forced limiting structure is overcome. When the tightening screw 15 tightens the connection of the support plate 3 with the compression plate 5, all degrees of freedom are limited.
While the preferred embodiments of the present invention have been described in detail, the present invention is not limited to the above embodiments, and various changes may be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.
Many other changes and modifications may be made without departing from the spirit and scope of the invention. It is to be understood that the invention is not to be limited to the specific embodiments, but only by the scope of the appended claims.
Claims (5)
1. The utility model provides a light-duty leveling torsion preventing mechanism of precision measurement equipment which characterized in that: comprising the steps of (a) a step of,
a base;
a support plate;
the leveling mechanisms are arranged between the base and the supporting disc;
the leveling mechanism comprises an anti-backlash nut, a leveling screw rod, a leveling hand wheel, a screw sleeve, a compression spring and a locking nut component, wherein the leveling hand wheel is sleeved on the leveling screw rod, one end of the leveling screw rod is installed in the base through the anti-backlash nut, the other end of the leveling screw rod is installed in the supporting plate through the locking nut component, the screw sleeve is in threaded connection with the leveling screw rod, one end of the screw sleeve is positioned in the leveling hand wheel, the other end of the screw sleeve is in threaded connection with the base and is sleeved on the outer side of the anti-backlash nut, the compression spring is sleeved outside the leveling screw rod and limited through the anti-backlash nut and the screw sleeve, the leveling hand wheel drives the leveling screw rod to rotate, and the leveling screw rod rotates to sequentially drive the anti-backlash nut and the base to move up and down;
the number of the leveling mechanisms is three;
the locking nut assembly comprises a locking nut, a compression piece, a bearing seat and a bearing, wherein a first boss and a second boss are sequentially arranged at one end, close to a supporting disc, of the leveling screw, the bearing seat and the compression piece are sequentially arranged from inside to outside, the extending end of the compression piece is fixedly connected to the supporting disc, the bearing is sleeved on the outer side of the first boss, the bearing seat is provided with a first clamping surface, the first clamping surface is in fit with the end surfaces of the leveling screw and the bearing, and the locking nut is sleeved on the outer side of the second boss and compresses the bearing;
the anti-backlash nut is provided with a first groove, and a bulge which is clamped with the first groove is arranged below the compression ring;
the leveling device also comprises a contact pad structure, wherein the contact pad structure comprises a contact pad and a steel ball which are contacted, the contact pad is arranged in the supporting disc, and the steel ball is positioned between one end of the leveling screw close to the locking nut and the contact pad;
the contact pad is provided with a second groove matched with the steel ball, and the shape of the second groove is a taper hole, a groove and a plane respectively.
2. The light leveling and torsion preventing mechanism for precision measurement equipment according to claim 1, wherein: the leveling device further comprises a shaft end check ring and a backup nut sleeved on the leveling screw, wherein the backup nut is in fit with the inner bottom surface of the leveling hand wheel, and the shaft end check ring is arranged at one end, far away from the contact pad structure, of the leveling screw.
3. The light leveling and torsion preventing mechanism for precision measurement equipment according to claim 1, wherein: the screw sleeve is characterized by further comprising a jacking screw, wherein the jacking screw extends into the base in the radial direction and jacks the screw sleeve.
4. The light leveling and torsion preventing mechanism for precision measurement equipment according to claim 1, wherein: the device also comprises a tensioning screw which axially extends into the supporting disc and the pressing piece and is fastened.
5. A lightweight leveling and torsion preventing mechanism for precision measurement equipment according to any one of claims 1 to 4, wherein: the anti-backlash nut is made of nonmetallic materials.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010730872.9A CN111879336B (en) | 2020-07-27 | 2020-07-27 | Light leveling torsion-preventing mechanism of precision measurement equipment |
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| CN202010730872.9A CN111879336B (en) | 2020-07-27 | 2020-07-27 | Light leveling torsion-preventing mechanism of precision measurement equipment |
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| CN111879336B true CN111879336B (en) | 2023-09-26 |
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| CN114001782A (en) * | 2021-11-26 | 2022-02-01 | 中国电建集团成都勘测设计研究院有限公司 | Geological disaster monitoring device |
| CN115045336A (en) * | 2022-08-12 | 2022-09-13 | 中交第一航务工程局有限公司 | Point location adjusting device and point location transmission system |
| CN116952189B (en) * | 2023-09-20 | 2023-12-15 | 中国船舶集团有限公司第七〇七研究所 | Measuring device for comprehensive mechanized stope face |
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| CN111879336A (en) | 2020-11-03 |
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