CN210703441U - Decide moment of torsion test tube elasticity lid mechanism - Google Patents
Decide moment of torsion test tube elasticity lid mechanism Download PDFInfo
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- CN210703441U CN210703441U CN201921490902.2U CN201921490902U CN210703441U CN 210703441 U CN210703441 U CN 210703441U CN 201921490902 U CN201921490902 U CN 201921490902U CN 210703441 U CN210703441 U CN 210703441U
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Abstract
The utility model provides a fixed torque test tube elastic cover mechanism, a sleeve is longitudinally arranged in a shell of the mechanism, the inner wall of the sleeve is an inner conical surface, the test tube is convenient to tighten or loosen, a pull rod is positioned in the sleeve, and a spring chuck is arranged above the pull rod; the double-shaft cylinder drives the L-shaped push-pull rod, the pull rod moves up and down under the driving of the L-shaped push-pull rod, the collet chuck is further driven to move up and down, and the test tube is clamped or loosened by the inner conical surface of the sleeve under the driving of the collet chuck; the ratchet mechanism is arranged on the periphery of the sleeve, the transmission system is sleeved on the periphery of the ratchet mechanism, the motor drives the transmission system to further drive the ratchet mechanism to rotate, and the ratchet mechanism drives the sleeve to rotate. The problem of how to prevent that the test tube lid from twisting to die or harm is solved, a decide moment of torsion test tube elasticity lid mechanism is proposed, the device of turning round surely has been designed, and this mechanism realizes automatic slipping when the moment of torsion reaches the certainty, satisfies the clamp of test tube and presss from both sides tightly to when screwing up, realize automatic slipping, prevented that the test tube lid from twisting to die or harm.
Description
Technical Field
The utility model particularly relates to a decide moment of torsion test tube elasticity lid mechanism belongs to test tube elasticity lid technical field.
Background
When doing the experiment among the prior art, the spiral sealing cap often need loosen or screw up in the test tube test, and the test tube is sealed the spiral cap of screwing up for the manual work mostly, take trouble hard, also adopt the machine to screw up the test tube, but because do not control the dynamics of screwing up well, and not know when screw up and no longer exert oneself, in case when rotating to extreme position, continue rotatory to twist up the test tube easily, lead to the test tube lid to screw up or harm, cause accident and loss, consequently need a device can be fine screw up the test tube urgently, but can not make the test tube lid screw up or damage.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a solve above-mentioned technical problem, prevent that the test tube lid from twisting to die or harm, provide a decide moment of torsion test tube elasticity lid mechanism, designed and decide and turn round the device, this mechanism realizes automatic skidding when the moment of torsion reaches certain time, satisfies the clamp of test tube and presss from both sides tightly to when screwing up, realize automatic skidding, prevented that the test tube lid from twisting to die or harm.
The utility model relates to a fixed torque test tube tightness cover mechanism, which comprises a sleeve, a spring chuck, a shell, an upper end cover, a lower end cover, a motor, a transmission system, a ratchet mechanism, a pull rod, a power cylinder and an L-shaped push-pull rod; an upper end cover is arranged above the shell, a lower end cover is arranged below the shell, a sleeve is longitudinally arranged in the shell, the inner wall of the sleeve is an inner conical surface, so that a test tube can be conveniently fastened or loosened, the pull rod is positioned in the sleeve, and a spring chuck is arranged above the pull rod; the power cylinder is arranged outside the shell and drives the L-shaped push-pull rod, the pull rod moves up and down under the driving of the L-shaped push-pull rod so as to drive the collet chuck to move up and down, and the test tube is clamped or loosened by the inner conical surface of the sleeve under the driving of the collet chuck; the ratchet mechanism is arranged on the periphery of the sleeve, the transmission system is sleeved on the periphery of the ratchet mechanism, the motor drives the transmission system to further drive the ratchet mechanism to rotate, and the ratchet mechanism drives the sleeve to rotate; the ratchet mechanism comprises a ratchet wheel, a pawl and a compression spring, the pawl is matched outside the ratchet wheel, and the compression spring is pressed on the pawl.
Preferably, an upper bearing is installed below the upper end cover, a lower bearing is installed above the lower end cover, and the upper bearing and the lower bearing sleeve are both arranged on the periphery of the sleeve.
Preferably, the upper bearing is a cylindrical roller bearing.
Preferably, the lower bearing is a deep groove ball bearing.
Preferably, transmission system includes big synchronous pulley, driving sleeve, synchronous pulley, hold-in range, the hold-in range cover is in big synchronous pulley and synchronous pulley's periphery, big synchronous pulley cover is in the periphery of driving sleeve, and the driving sleeve cover is in telescopic lower part, the motor drives synchronous pulley and rotates, and then drives big synchronous pulley and rotate through synchronous belt drive, and then drives the driving sleeve and rotate, and the driving sleeve drives the sleeve and rotates.
Preferably, the pawl and the compression spring are both mounted on the drive sleeve.
Preferably, the upper part and the lower part of the joint of the pull rod and the L-shaped push-pull rod are respectively sleeved with a thrust ball bearing.
Preferably, fastening nuts are respectively installed below and below the thrust ball bearing, and the two fastening nuts are sleeved on the periphery of the pull rod.
Preferably, the power cylinder is an air cylinder, a hydraulic cylinder or an electric cylinder.
Preferably, the inner conical surface of the sleeve forms an angle of 15 ° to 30 ° with the central axis.
The utility model discloses a theory of operation is: the utility model mainly comprises two parts, a test tube clamping mechanism and a ratchet wheel mechanism,
the test tube clamping mechanism adopts a spring chuck structure, a power cylinder is utilized to drive a pull rod to further drive the spring chuck to move downwards, and the spring chuck is radially deformed by a conical sleeve to clamp a test tube; otherwise, the test tube is loosened, so that the test tube is convenient to take out.
The improvement and application of a ratchet mechanism, when rotating in the positive direction, the transmission is realized through a ratchet wheel and a pawl; during reverse rotation, the effect of certain torque is achieved by adjusting the strength of the spring pushed by the pawl and utilizing the change of the friction force between the pawl and the ratchet wheel, namely, the test tube cap can be screwed down within the normal friction force range, and once the resistance is increased, the pawl and the ratchet wheel slip, the protection effect is achieved.
Decide moment of torsion test tube elasticity lid mechanism beneficial effect do: realize the automatic of test tube cap and loosen or screw up, avoid screwing up the dead, the garrulous occurence of failure of twisting of test tube, reduce the purchasing cost of test tube.
Drawings
FIG. 1 is a sectional view taken along line A-A of the constant torque tube cap mechanism of the present invention;
FIG. 2 is a side view of the constant torque tube cap mechanism of the present invention;
FIG. 3 is a top view of the constant torque tube cap mechanism of the present invention;
FIG. 4 is a C-C sectional view of the constant torque tube cap mechanism of the present invention;
FIG. 5 is a D-D cross-sectional view of the constant torque tube cap mechanism of the present invention;
wherein the labeling is as follows: 1-an upper bearing; 2-a sleeve; 3-clamping head; 4-a housing; 5-upper end cover; 6-lower end cover; 7-a synchronous pulley; 8-ratchet wheel; 9-a transmission sleeve; 13-a pawl; 14-a lower bearing; 15-a motor; 16-a synchronous pulley; 17-a synchronous belt; 19-a pull rod; 20-thrust ball bearing; 22-a power cylinder; 23-a compression spring; 24-L-shaped push-pull rod.
Detailed Description
The following detailed description of the embodiments of the present invention is made with reference to the accompanying drawings 1-5:
the first embodiment is as follows: the present embodiment is explained with reference to fig. 1 to 5. The fixed-torque test tube cover loosening and tightening mechanism comprises a sleeve 2, a spring chuck 3, a shell 4, an upper end cover 5, a lower end cover 6, a motor 15, a transmission system, a ratchet mechanism, a pull rod 19, a power cylinder 22 and an L-shaped push-pull rod 24; an upper end cover 5 is installed above the shell 4, a lower end cover 6 is installed below the shell 4, a sleeve 2 is longitudinally installed in the shell 4, the inner wall of the sleeve 2 is an inner conical surface, so that a test tube can be conveniently fastened or loosened, the pull rod 19 is located inside the sleeve 2, and a spring chuck 3 is installed above the pull rod 19; the power cylinder 22 is arranged outside the shell 4, the power cylinder 22 drives the L-shaped push-pull rod 24, the pull rod 19 moves up and down under the driving of the L-shaped push-pull rod 24, the collet chuck 3 is further driven to move up and down, and the test tube is clamped or loosened by the inner conical surface of the sleeve 2 under the driving of the collet chuck 3; ratchet installs in the periphery of sleeve 2, transmission system cover is in ratchet periphery, motor 15 drives transmission system and then drives ratchet and rotates, and ratchet drives sleeve 2 and rotates, ratchet includes ratchet 8, pawl 13 and compression spring 23, ratchet 8 external cooperation has pawl 13, compression spring 23 presses on pawl 13. The power cylinder 22 provides thrust to push the L-shaped push-pull rod 24 to drive the pull rod 19, the pull rod 19 drives the collet chuck 3 to ascend and descend, and the test tube is clamped or loosened by the aid of the inclined surface in the sleeve 2. The included angle between the inner conical surface of the sleeve 2 and the central axis is 15-30 degrees, and 20 degrees is preferred. The upper end cover 5 and the lower end cover 6 play a role in fixing.
An upper bearing 1 is installed below the upper end cover 5, a lower bearing 14 is installed above the lower end cover 6, and the upper bearing 1 and the lower bearing 14 are sleeved on the periphery of the sleeve 2. The upper bearing 1 is a cylindrical roller bearing. The lower bearing 14 is a deep groove ball bearing.
The transmission system comprises a large synchronous belt pulley 7, a transmission sleeve 9, a synchronous belt pulley 16 and a synchronous belt 17, wherein the synchronous belt 17 is sleeved at the peripheries of the large synchronous belt pulley 7 and the synchronous belt pulley 16, the large synchronous belt pulley 7 is sleeved at the periphery of the transmission sleeve 9, the transmission sleeve 9 is sleeved at the lower part of the sleeve 2, the motor 15 drives the synchronous belt pulley 16 to rotate, and the transmission system drives the large synchronous belt pulley 7 to rotate through the synchronous belt 17 so as to drive the transmission sleeve 9 to rotate, and the transmission sleeve 9 drives the sleeve 2 to rotate. Ratchet 8 and pawl 13 integral rotation during corotation, the strength size of adjustment compression spring 23 during the reversal can be rotatory in certain frictional force within range, exceeds the within range and skids, can not rotate again, avoids the test tube lid to be twisted bad or damages the test tube.
The pawl 13 and the compression spring 23 are both mounted on the driving sleeve 9. The compression spring 23 adjusts the compression amount of the spring through four external screws, the friction force of the pawl 13 is controlled, and four small openings for adjusting the screws are formed in the outer portion of the transmission sleeve 9.
Thrust ball bearings 20 are respectively sleeved above and below the joint of the pull rod 19 and the L-shaped push-pull rod 24.
And fastening nuts are respectively arranged below and below the thrust ball bearing 20, and the two fastening nuts are sleeved on the periphery of the pull rod 19.
The power cylinder 22 is an air cylinder, a hydraulic cylinder or an electric cylinder.
The specific operation process of the fixed-torque test tube elastic cover mechanism according to the first embodiment is as follows:
firstly, a test tube with a cover is clamped by a manipulator and inserted into a collet chuck 3 of a sleeve 2 of the mechanism, then a power cylinder 22 extends out to drive a pull rod 19 to move downwards, and further drive the collet chuck 3 to clamp the test tube downwards; then the stepping motor 15 rotates to drive the synchronous belt pulley 16, the synchronous belt 17 and the large synchronous belt pulley 7 to rotate, and when the test tube rotates forwards, the ratchet mechanism drives the sleeve 2 to further drive the test tube to rotate, and the bottle cap of the test tube is loosened; when the bottle cap is reversely rotated, the ratchet mechanism drives the test tube to screw the bottle cap tightly by means of the friction resistance of the pawl. When the bottle cap is completely screwed down and exceeds the set torque, the ratchet mechanism overrunning clutch slips to protect the test tube from being damaged, the power cylinder 22 retracts, the spring chuck 3 is opened, and the test tube can be drawn out at will.
The test tube elasticity of prior art covers the mechanism and can only just reversing, and the utility model discloses can reverse in certain distortion within range, exceed the scope and just skid, can protect at rotatory work piece be unlikely to the limit and destroyed.
The above-mentioned embodiments further explain the objects, technical solutions and advantages of the present invention in detail. It should be understood that the above description is only exemplary of the present invention, and is not intended to limit the present invention, and that any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention may be made without departing from the scope of the present invention.
Claims (10)
1. A fixed-torque test tube cover loosening and tightening mechanism is characterized by comprising a sleeve (2), a spring chuck (3), a shell (4), an upper end cover (5), a lower end cover (6), a motor (15), a transmission system, a ratchet mechanism, a pull rod (19), a power cylinder (22) and an L-shaped push-pull rod (24);
an upper end cover (5) is installed above the shell (4), a lower end cover (6) is installed below the shell, a sleeve (2) is longitudinally installed in the shell (4), the inner wall of the sleeve (2) is an inner conical surface, so that a test tube can be conveniently clamped or loosened, the pull rod (19) is located inside the sleeve (2), and a spring chuck (3) is installed above the pull rod (19);
the power cylinder (22) is arranged outside the shell (4), the power cylinder (22) drives the L-shaped push-pull rod (24), the pull rod (19) moves up and down under the driving of the L-shaped push-pull rod (24) so as to drive the collet chuck (3) to move up and down, and the test tube is clamped or loosened by the inner conical surface of the sleeve (2) under the driving of the collet chuck (3);
the ratchet mechanism is arranged on the periphery of the sleeve (2), the transmission system is sleeved on the periphery of the ratchet mechanism, the motor (15) drives the transmission system to further drive the ratchet mechanism to rotate, the ratchet mechanism drives the sleeve (2) to rotate,
the ratchet mechanism comprises a ratchet wheel (8), a pawl (13) and a compression spring (23), the pawl (13) is matched outside the ratchet wheel (8), and the compression spring (23) is pressed on the pawl (13).
2. The fixed-torque test tube elastic cover mechanism according to claim 1, wherein an upper bearing (1) is mounted below the upper end cover (5), a lower bearing (14) is mounted above the lower end cover (6), and the upper bearing (1) and the lower bearing (14) are both sleeved on the periphery of the sleeve (2).
3. Torque-determining tube elastic cover mechanism according to claim 2, characterized in that said upper bearing (1) is a cylindrical roller bearing.
4. Torque tube elastic cover mechanism according to claim 2, characterized in that said lower bearing (14) is a deep groove ball bearing.
5. The fixed-torque test tube elastic cover mechanism according to claim 1, wherein the transmission system comprises a large synchronous pulley (7), a transmission sleeve (9), a synchronous pulley (16) and a synchronous belt (17), the synchronous belt (17) is sleeved on the peripheries of the large synchronous pulley (7) and the synchronous pulley (16), the large synchronous pulley (7) is sleeved on the periphery of the transmission sleeve (9), the transmission sleeve (9) is sleeved on the lower portion of the sleeve (2), the motor (15) drives the synchronous pulley (16) to rotate, and the large synchronous pulley (7) is driven to rotate through the transmission of the synchronous belt (17), so that the transmission sleeve (9) is driven to rotate, and the transmission sleeve (9) drives the sleeve (2) to rotate.
6. Torque-determining tube elastic cover mechanism according to claim 5, characterized in that said pawl (13) and compression spring (23) are both mounted on a driving sleeve (9).
7. The torque-fixed test tube elastic cover mechanism according to claim 1, wherein thrust ball bearings (20) are respectively sleeved above and below the connection part of the pull rod (19) and the L-shaped push-pull rod (24).
8. Torque-fixed test tube elastic cover mechanism according to claim 7, characterized in that fastening nuts are respectively mounted below and below said thrust ball bearing (20), and both said fastening nuts are sleeved on the outer periphery of the pull rod (19).
9. The constant-torque test tube elastic cover mechanism according to claim 1, wherein the power cylinder (22) is an air cylinder, a hydraulic cylinder or an electric cylinder.
10. Torque-determining tube tight cap mechanism according to claim 1, characterized in that the angle of the inner conical surface of said sleeve (2) with respect to the central axis is comprised between 15 ° and 30 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921490902.2U CN210703441U (en) | 2019-09-09 | 2019-09-09 | Decide moment of torsion test tube elasticity lid mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921490902.2U CN210703441U (en) | 2019-09-09 | 2019-09-09 | Decide moment of torsion test tube elasticity lid mechanism |
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| Publication Number | Publication Date |
|---|---|
| CN210703441U true CN210703441U (en) | 2020-06-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921490902.2U Active CN210703441U (en) | 2019-09-09 | 2019-09-09 | Decide moment of torsion test tube elasticity lid mechanism |
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| CN (1) | CN210703441U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112247546A (en) * | 2020-10-21 | 2021-01-22 | 罗桃艳 | A utmost point post nut assembly quality for new forms of energy lithium ion power battery makes |
| CN114434138A (en) * | 2022-04-06 | 2022-05-06 | 杭州泰尚智能装备有限公司 | Air-clamping magnetic fixed-torque ultra-protection high-speed screwing mechanism and implementation method thereof |
-
2019
- 2019-09-09 CN CN201921490902.2U patent/CN210703441U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112247546A (en) * | 2020-10-21 | 2021-01-22 | 罗桃艳 | A utmost point post nut assembly quality for new forms of energy lithium ion power battery makes |
| CN114434138A (en) * | 2022-04-06 | 2022-05-06 | 杭州泰尚智能装备有限公司 | Air-clamping magnetic fixed-torque ultra-protection high-speed screwing mechanism and implementation method thereof |
| CN114434138B (en) * | 2022-04-06 | 2022-06-24 | 杭州泰尚智能装备有限公司 | Air-clamping magnetic fixed-torque ultra-protection high-speed screwing mechanism and implementation method thereof |
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