CN213950530U - Lifting and rotating mechanism - Google Patents
Lifting and rotating mechanism Download PDFInfo
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- CN213950530U CN213950530U CN202023116854.6U CN202023116854U CN213950530U CN 213950530 U CN213950530 U CN 213950530U CN 202023116854 U CN202023116854 U CN 202023116854U CN 213950530 U CN213950530 U CN 213950530U
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- lifting
- arm
- bearing
- joint bearing
- pendulum rod
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Abstract
The utility model belongs to the technical field of machine parts, in particular to lifting and drop rotating mechanism, which comprises a gear, the center pin, the position sleeve, the lifting screw rod, lifting joint bearing, the pendulum rod arm, rotatory screw rod, rotatory joint bearing, the bearing frame, the pendulum rod, fixed cover, a bearing, the guiding axle, universal joint, through increase universal joint between lifting joint bearing and lifting screw rod and between rotatory joint bearing and the rotatory screw rod, thereby make the tracking angle unrestricted, adopt retractable with pendulum rod arm and screw rod and rotatory joint bearing to be connected, the guiding axle is through the copper sheathing endwise slip of installing in the pendulum rod when the center pin drives pendulum rod arm up-and-down motion, therefore can guarantee that the pendulum rod can not have the action of reciprocating, thereby guarantee to trail cam and rotatory joint bearing, the screw rod is at the coplanar, can not produce tracking error.
Description
Technical Field
The utility model belongs to the technical field of machine parts, in particular to lifting and rotating mechanism.
Background
In the mechanical manufacturing industry, complex actions are often required to be completed; if the component rotates, the component is required to ascend and descend; in particular, filling machines in pharmaceutical machines track the filling operation.
The structure of the prior art is that two lifting joint bearings 2 are connected through a screw 9, one end of each lifting joint bearing is connected with a central shaft 6, and the other end of each lifting joint bearing is connected with a lifting cam (not shown in the figure). The central shaft 6 can move up and down and rotate in the positioning sleeve 8. The swing arm 4 is fixed at the lower end of the central shaft 6, two rotary joint bearings 1 and a screw 9 are assembled into a set of swing arm, one end of the set of swing arm is connected with the swing arm 4, and the other end of the set of swing arm is connected with a swing rod of the tracking rotary cam (not shown in the figure).
The working principle is as follows: the gear 5 moves at a uniform speed under the drive of a motor, the central shaft also rotates at a uniform speed under the action of a tracking rotary cam 6 through the combined action of the rotary joint bearing 1, the screw rod 9 and the swing rod arm 4, and after the central shaft rotates to a certain angle, the lifting cam pushes the lifting joint bearing 2, the screw rod 9 and the central shaft 6 to move downwards; when the gear 5 rotates to a set angle, the lifting cam pushes the lifting knuckle bearing 2, the screw 9 and the central shaft 6 to do ascending motion; and when the central shaft 6 rises to the highest point, the central shaft rapidly returns to the original point through the rotary joint bearing 1, the screw 9 and the swing rod arm 4 under the action of the tracking rotary cam, and a tracking and filling process is completed.
The lifting and rotating mechanism has the following disadvantages:
1. the lifting joint bearing and the screw rod are twisted in the tracking rotation process, the axial rotatable angle of a single joint bearing is 26-30 degrees, the maximum allowable rotation angle of two joints in the mechanism is 52-60 degrees, and the maximum allowable rotation angle cannot exceed the tracking angle; the actual tracking angle may be smaller. I.e. the tracking angle is limited.
In the process of rotary tracking, the lifting cam pushes the central shaft to rise, so that the swing rod arm 4 can climb upwards, a rotary joint bearing is caused, the screw rod and the swing rod arm are not on the same horizontal plane, a certain torsion phenomenon can occur, and the tracking rotating speed is caused to have an error, namely, the synchronization of the rotating speed of the central shaft and a gear cannot be ensured, the central shaft is poor, tracking parts arranged on the central shaft can amplify the error, and the longer the arm is, the larger the error can be amplified.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to prior art not enough and defect, provide a lifting and rotating mechanism, it can make the tracking angle unrestricted, reaches to guarantee to track cam and swivel joint bearing, screw rod at the coplanar, can not produce tracking error's purpose.
In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a lifting and rotating mechanism, includes gear, center pin, is equipped with the position sleeve between gear and the center pin, the lift cam is connected to center pin one end, and the other end is connected with lift joint bearing through the lifting screw, and the gear below is equipped with the pendulum rod arm that cup joints with the center pin, and the pendulum rod arm is connected with rotary joint bearing through rotary screw, the gear lower extreme is equipped with the bearing frame, the pendulum rod has been cup jointed to the below that corresponds to the pendulum rod arm on the center pin, middle part between pendulum rod and the pendulum rod arm is equipped with the fixed cover of cover on the center pin, is equipped with the bearing between bearing frame and the fixed cover, and the outer end between pendulum rod and the pendulum rod arm passes through the guide shaft and connects, all add universal joint between lift joint bearing and the lifting screw and between rotary joint bearing and the rotary screw.
Further preferably, a copper sleeve is sleeved on the guide shaft.
Further preferably, the swing rod arm comprises a transverse arm plate vertically sleeved with the central shaft, a vertical arm plate is connected between the transverse arm plate and the rotary screw, and the vertical arm plate and the transverse arm plate are arranged in an L shape.
Compared with the prior art, the utility model discloses beneficial effect does: comprises a gear, a central shaft, a positioning sleeve is arranged between the gear and the central shaft, one end of the central shaft is connected with a lifting cam, the other end of the central shaft is connected with a lifting joint bearing through a lifting screw rod, a swing rod arm sleeved with the central shaft is arranged below the gear, the swing rod arm is connected with a rotary joint bearing through a rotary screw rod, the lower end of the gear is provided with a bearing seat, a swing rod is sleeved below the swing rod arm on the central shaft, a fixed sleeve sleeved on the central shaft is arranged in the middle part between the swing rod and the swing rod arm, a bearing is arranged between the bearing seat and the fixed sleeve, the outer end between the swing rod and the swing rod arm is connected through a guide shaft, universal joints are respectively arranged between the lifting joint bearing and the lifting screw rod and between the rotary joint bearing and the rotary screw rod, the universal joints are respectively arranged between the lifting joint bearing and the lifting screw rod and between the rotary joint bearing and the rotary screw rod, therefore, the tracking angle is not limited, the swing arm is connected with the screw rod and the rotary joint bearing in a telescopic mode, and the guide shaft axially slides through the copper sleeve arranged in the swing rod when the central shaft drives the swing arm to move up and down, so that the swing rod cannot move up and down, the tracking cam, the rotary joint bearing and the screw rod are ensured to be on the same plane, and tracking errors cannot be generated.
Drawings
Fig. 1 is a schematic structural diagram of the prior art.
Fig. 2 is a schematic structural diagram of the present invention.
Reference numerals
1. The device comprises a rotary joint bearing 2, a lifting joint bearing 3, a swing rod 4, a swing rod arm 5, a gear 6, a central shaft 7, a guide shaft 8, a positioning sleeve 9, a lifting screw rod 10, a bearing seat 11, a universal joint 12, a fixing sleeve 13, a rotary screw rod 14, a copper sleeve 15 and a bearing.
Detailed Description
The technical solution of the present invention will be further elaborated with reference to the drawings and the embodiments.
As shown in fig. 1, a lifting and rotating mechanism comprises a gear 5 and a central shaft 6, a positioning sleeve 8 is arranged between the gear 5 and the central shaft 6, one end of the central shaft 6 is connected with a lifting cam, the other end of the central shaft is connected with a lifting joint bearing 2 through a lifting screw 9, a swing link arm 4 sleeved with the central shaft 6 is arranged below the gear 5, the swing link arm 4 comprises a transverse arm plate vertically sleeved with the central shaft 6, a vertical arm plate is connected between the transverse arm plate and a rotating screw 13, the vertical arm plate and the transverse arm plate are arranged in an L shape, the swing link arm 4 is connected with a rotating joint bearing 1 through the rotating screw 13, a bearing seat 10 is arranged at the lower end of the gear 5, a swing link 3 is sleeved on the central shaft 6 corresponding to the lower part of the swing link arm 4, a fixed sleeve 12 sleeved on the central shaft 6 is arranged in the middle part between the swing link 3 and the swing link arm 4, and a bearing 15 is arranged between the bearing seat 10 and the fixed sleeve 12, the outer end between the swing rod 3 and the swing rod arm 4 is connected through a guide shaft 7, a copper sleeve 14 is sleeved on the guide shaft 7, universal joints 11 are respectively added between the lifting joint bearing 2 and the lifting screw rod 9 and between the rotary joint bearing 1 and the rotary screw rod 13, the universal joints 11 are added between the lifting joint bearing 2 and the lifting screw rod 9 and between the rotary joint bearing 1 and the rotary screw rod 13, so that the tracking angle is not limited, the swing rod arm 4 is telescopically connected with the screw rod and the rotary joint bearing 1, a bearing seat 10 is arranged below the gear 5, the swing rod 3 is tightly held on a fixed sleeve 12, the fixed sleeve 12 and the bearing seat 10 are provided with a bearing 15, the guide shaft 7 is arranged on the swing rod arm 4 and is connected with the swing rod 3 through the copper sleeve 14, therefore, when the center shaft 6 drives the swing rod arm 4 to move up and down, the guide shaft 7 axially slides through the copper sleeve 14 arranged in the swing rod 3, therefore, the oscillating bar 3 can be ensured not to move up and down, thereby ensuring that the tracking cam and the rotary joint bearing 1 have the screw rod in the same plane and generating no tracking error.
The above is only the preferred embodiment of the present invention, so all the equivalent changes or modifications made by the structure, features and principles in accordance with the claims of the present invention are included in the claims of the present invention.
Claims (3)
1. The utility model provides a lifting and rotating mechanism, includes gear, center pin, is equipped with the position sleeve between gear and the center pin, the lift cam is connected to center pin one end, and the other end is connected with lift joint bearing through the lifting screw, and the gear below is equipped with the pendulum rod arm that cup joints with the center pin, and the pendulum rod arm is connected with swivel joint bearing, its characterized in that through swivel screw: the gear lower extreme is equipped with the bearing frame, the pendulum rod has been cup jointed to the below that corresponds the pendulum rod arm on the center pin, middle part between pendulum rod and the pendulum rod arm is equipped with the fixed cover of cover on the center pin, is equipped with the bearing between bearing frame and the fixed cover, and the outer end between pendulum rod and the pendulum rod arm is passed through the guiding axle and is connected, all add universal joint between lift joint bearing and the lifting screw rod and between swivel joint bearing and the swivel screw rod.
2. A lifting and drop rotating mechanism as claimed in claim 1, wherein: the guide shaft is sleeved with a copper sleeve.
3. A lifting and drop rotating mechanism as claimed in claim 1, wherein: the swing rod arm comprises a transverse arm plate which is vertically sleeved with the central shaft, a vertical arm plate is connected between the transverse arm plate and the rotary screw, and the vertical arm plate and the transverse arm plate are arranged in an L shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023116854.6U CN213950530U (en) | 2020-12-23 | 2020-12-23 | Lifting and rotating mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023116854.6U CN213950530U (en) | 2020-12-23 | 2020-12-23 | Lifting and rotating mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213950530U true CN213950530U (en) | 2021-08-13 |
Family
ID=77193762
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023116854.6U Active CN213950530U (en) | 2020-12-23 | 2020-12-23 | Lifting and rotating mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213950530U (en) |
-
2020
- 2020-12-23 CN CN202023116854.6U patent/CN213950530U/en active Active
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