CN215805547U - Eccentric locking device of connecting rod - Google Patents
Eccentric locking device of connecting rod Download PDFInfo
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- CN215805547U CN215805547U CN202121740330.6U CN202121740330U CN215805547U CN 215805547 U CN215805547 U CN 215805547U CN 202121740330 U CN202121740330 U CN 202121740330U CN 215805547 U CN215805547 U CN 215805547U
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- connecting rod
- rotating piece
- eccentric
- rotating
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Abstract
The utility model relates to an eccentric locking device of a connecting rod. The rotating piece is arranged on the connecting end of the connecting rod, so that the rotating central shaft of the rotating piece is eccentrically arranged relative to the central shaft of the connecting rod and is eccentrically arranged relative to the central shaft of the rotating piece, when the rotating piece rotates, the distance between the central shaft of the rotating piece and the central shaft of the connecting rod constantly changes, when the central shaft of the rotating piece and the central shaft of the connecting rod are overlapped or are smaller than a certain value, the maximum width formed by overlapping the rotating piece and the connecting rod is smaller, when the distance between the central shaft of the rotating piece and the central shaft of the connecting rod is larger than a certain value, the maximum width formed by overlapping the rotating piece and the connecting rod is larger, and the rotating piece and the connecting rod can be quickly butted and locked by the aperture or the width of the connecting hole of the connecting piece.
Description
Technical Field
The utility model relates to an eccentric locking device of a connecting rod.
Background
In the production field, a plurality of links relate to a structure needing quick connection, butt joint and locking, such as butt joint and fixation of a lifter and a charging bucket. At present, the butt joint of the elevator and the charging basket is fixed by generally adopting a connecting rod to complete the fixation through the thread locking of a locking thread fastener structure, and then after the fixation is finished, the locking thread fastener structure is manually disassembled, so that the labor intensity is high, and the operation is not convenient and fast enough.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects of the prior art and provide an eccentric locking device for a connecting rod.
The technical scheme adopted by the utility model is as follows: a connecting rod eccentric locking device comprises a connecting rod, wherein a rotating piece is arranged at the connecting end of the connecting rod, the rotating piece can rotate relative to the connecting rod, and a central shaft for rotating the rotating piece is eccentrically arranged relative to a central shaft of the connecting rod and eccentrically arranged relative to the central shaft of the rotating piece; the rotating part rotates at an unlocking position where the distance between the central shaft of the rotating part and the central shaft of the connecting rod is not more than a and at a locking position where the distance between the central shaft of the rotating part and the central shaft of the connecting rod is not less than b, wherein b is more than a, the rotating part and the connecting rod form an end structure which can be penetrated through by a connecting hole of the connecting part at the unlocking position, and the rotating part and the connecting rod form an end structure which cannot be penetrated through by the connecting hole of the connecting part at the locking position.
The tip of connecting rod is equipped with the connecting axle for the position arch of central axis off-centre, it is equipped with first connect the through-hole to rotate the eccentric position of central axis relatively, connect the axial region portion and be located first connect the through-hole, it uses the center pin of connecting axle to rotate as the axle center to rotate the piece.
The outer wall of the connecting shaft is matched with the inner wall of the first connecting through hole through a radial bearing.
The outer wall of the connecting shaft is provided with a first limiting step and a first retaining ring limiting groove, a first axial limiting retaining ring is arranged in the first retaining ring limiting groove, and the inner ring of the radial bearing is limited between the first limiting step and the first axial limiting retaining ring;
and a second limiting step and a second retaining ring limiting groove are arranged on the inner wall of the first connecting through hole, a second axial limiting retaining ring is arranged in the second retaining ring limiting groove, and the outer ring of the radial bearing is limited between the second limiting step and the second axial limiting retaining ring.
The end of the connecting rod is provided with an eccentric connecting seat, the central shaft of the eccentric connecting seat is eccentrically arranged relative to the central shaft of the connecting rod, and the connecting shaft is formed by outwards protruding the center of the eccentric connecting seat.
A second connecting through hole is formed in the center of the connecting shaft, a third connecting hole is formed in the eccentric position of the end part of the connecting rod, and the connecting shaft penetrates through the second connecting through hole through a first bolt and extends into the third connecting hole to be connected and fastened with the connecting shaft through threads so as to be fixedly connected with the end part of the connecting rod; and a positioning pin is arranged between the eccentric position of the eccentric connecting seat and the end part of the connecting rod.
The end part of the connecting rod is provided with a first positioning hole, the end face, close to the connecting rod, of one end of the eccentric connecting seat is provided with a second positioning hole, and the two ends of the positioning pin are respectively positioned in the first positioning hole and the second positioning hole.
The rotating part comprises a rotating part body and a rotating part cover body, the first connecting through hole is formed in the rotating part body, and the rotating part cover body is sleeved outside the rotating part body and detachably connected with the rotating part body.
During the process that the rotating piece rotates from the unlocking position to the locking position, a connecting line between the central shaft of the rotating piece and the rotating shaft center rotates through a vertical line on the rotating shaft center.
Under the locking position, an included angle alpha is formed between a connecting line between the central axis and the rotating axis of the rotating part and an outer horizontal line, and alpha is 0-45 degrees.
The utility model has the following beneficial effects: the rotating piece is arranged on the connecting end of the connecting rod, so that the rotating central shaft of the rotating piece is eccentrically arranged relative to the central shaft of the connecting rod and is eccentrically arranged relative to the central shaft of the rotating piece, when the rotating piece rotates, the distance between the central shaft of the rotating piece and the central shaft of the connecting rod constantly changes, when the central shaft of the rotating piece and the central shaft of the connecting rod are overlapped or are smaller than a certain value, the maximum width formed by overlapping the rotating piece and the connecting rod is smaller, when the distance between the central shaft of the rotating piece and the central shaft of the connecting rod is larger than a certain value, the maximum width formed by overlapping the rotating piece and the connecting rod is larger, and the rotating piece and the connecting rod can be quickly butted and locked by the aperture or the width of the connecting hole of the connecting piece.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is within the scope of the present invention for those skilled in the art to obtain other drawings based on the drawings without inventive exercise.
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a schematic diagram of the position relationship between the rotating member in the unlocking position (a) and the locking position (b) according to an embodiment of the present invention;
FIG. 3 is an exploded view of one embodiment of the present invention;
FIG. 4 is a schematic structural diagram of the eccentric connecting seat (a) and the rotating member body (b) according to an embodiment of the present invention;
FIG. 5 is a cross-sectional view of the rotatable member in a locked position in accordance with one embodiment of the present invention;
FIG. 6 is a cross-sectional view of the rotor in an unlocked position in accordance with an embodiment of the present invention;
in the figure, 1, connecting rod; 101, a third connecting hole; 102, a first positioning hole; 2, an eccentric connecting seat; 201, a connecting shaft; 202, a first limit step; 203, a first check ring limiting groove; 204, a first axial limit retainer ring; 205, a second connecting via; 206, guiding the arc-shaped limiting groove; 207, a second positioning hole; 3, rotating the part; 301, a first connecting through hole; 302, a second limit step; 303, a second stop ring limiting groove; 304, a second axial limit stop ring; 305, a rotor body; 306, a rotor cover; 307, a second bolt; 308, a guide pin; 4, a radial bearing; 5, a first bolt; and 6, positioning pins.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings.
It should be noted that all expressions using "first" and "second" in the embodiments of the present invention are used for distinguishing two entities with the same name but different names or different parameters, and it should be noted that "first" and "second" are merely for convenience of description and should not be construed as limitations of the embodiments of the present invention, which are not described in any more detail in the following embodiments.
The terms of direction and position of the present invention, such as "up", "down", "front", "back", "left", "right", "inside", "outside", "top", "bottom", "side", etc., refer to the direction and position of the attached drawings. Accordingly, the use of directional and positional terms is intended to illustrate and understand the present invention and is not intended to limit the scope of the present invention.
As shown in fig. 1-2, an eccentric locking device of a connecting rod comprises a connecting rod 1, wherein a rotating member 3 is arranged at the connecting end of the connecting rod 1, the rotating member 3 can rotate relative to the connecting rod 1, and the central shaft of the rotating member 3 is eccentrically arranged relative to the central shaft of the connecting rod 1 and eccentrically arranged relative to the central shaft of the rotating member 3; a rotation angle limiting structure is arranged between the connecting rod 1 and the rotating part 3, under the action of the rotation angle limiting structure, the rotating part 3 rotates to have an unlocking position where the distance between the central axis of the rotating part 3 and the central axis of the connecting rod 1 is not more than a and a locking position where the distance between the central axis of the rotating part 3 and the central axis of the connecting rod 1 is not less than b, and b is more than a, as shown in fig. 2 (a), under the unlocking position, the end structure formed by the rotating part 3 and the connecting rod 1 can be penetrated by the connecting hole of the connecting part, as shown in fig. 2 (b), under the locking position, the end structure formed by the rotating part 3 and the connecting rod 1 can not be penetrated by the connecting hole of the connecting part. Here, a and b may be set according to the structure of the coupling hole of the actual coupled member.
As shown in fig. 2, in the present embodiment, the connecting rod 1 and the rotating member 3 are both circular, the radius of the connecting rod 1 is R1, the radius of the rotating member 3 is R2, the eccentric distance of the central axis of the rotation of the rotating member 3 with respect to the central axis of the connecting rod 1 is d, and the eccentric distance of the central axis of the rotation of the rotating member 3 with respect to the central axis of the rotating member 3 is c. The rotating member 3 rotates relative to the connecting rod 1, as shown in fig. 2 (a), when the central axis of rotation of the rotating member 3 is located on the straight line between the central axis of the connecting rod 1 and the central axis of rotation of the rotating member 3, the maximum width of the structure formed by the connecting rod 1 and the rotating member 3 is the smallest, which is the difference between R1+ R2+ R1 and R2, in this embodiment, R1 is approximately equal to R2, so that the maximum width of the structure formed by the connecting rod 1 and the rotating member 3 is 2R2 at this time, and the connecting rod 1 and the rotating member 3 are substantially overlapped, which is the unlocking position in this embodiment; as shown in fig. 2 (b), when the central axis of the rotation member 3 is located on the straight line extending line of the central axis of the connecting rod 1 and the central axis of the rotation member 3, the maximum width of the structure formed by the connecting rod 1 and the rotation member 3 is R1+ R2+ c + d, in this embodiment, R1 is approximately equal to R2, and therefore the maximum width of the structure formed by the connecting rod 1 and the rotation member 3 is 2R2+ c + d, which is the locking position of this embodiment. The aperture of the connecting hole of the connected piece is only between 2R2 and 2R2+ c + d.
The angle of the locking position and the angle of the unlocking position can be adjusted, so that the maximum width of the locking position and the maximum width of the unlocking position are not the same, and the connecting hole of the connected piece is only required to be between the maximum width of the locking position and the maximum width of the unlocking position.
The connecting rod 1 and/or the rotating member 3 may be non-circular, such as square, hexagonal, etc., or the maximum widths of the locking position and the unlocking position may be changed during the rotation of the rotating member 3 due to the eccentric arrangement, so as to achieve the purpose of allowing the unlocking to pass through and preventing the locking from passing through.
In the present embodiment, during the rotation of the rotation member 3 from the unlocking position to the locking position, the line connecting the center axis of the rotation member 3 to the rotation axis rotates through the vertical line on the rotation axis. When the rotating member 3 is rotated by the gravity of the rotating member 3, the rotating member 3 tends to rotate toward the locking position, so that the rotating member can be prevented from rotating toward the unlocking position without the external force.
An included angle α is formed between a connecting line between the central axis and the rotating axis of the rotating member 3 and an outer horizontal line, and preferably, α is 0 to 45 °, and in this embodiment, α is about 40 °.
As shown in fig. 3-6, a connection shaft 201 is protruded from a position of the end of the connection rod 1 eccentric with respect to the central axis thereof, a first connection hole 301 is formed in a position of the rotation member 3 eccentric with respect to the central axis thereof, a portion of the connection shaft 201 is located in the first connection hole 301, and the rotation member 3 rotates around the central axis of the connection shaft 201.
The outer wall of the connecting shaft 201 is matched with the inner wall of the first connecting through hole 301 through a radial bearing 4. The radial bearing 4 plays a role in reducing the rotational resistance between the two, and in the embodiment, the radial bearing 4 specifically adopts a deep groove ball bearing.
As shown in fig. 4 (a), the outer wall of the connecting shaft 201 is provided with a first limiting step 202 and a first retaining ring limiting groove 203, a first axial limiting retaining ring 204 is arranged in the first retaining ring limiting groove 203, and the inner ring of the radial bearing 4 is limited between the first limiting step 202 and the first axial limiting retaining ring 204;
as shown in fig. 4 (b), a second limiting step 302 and a second retaining ring limiting groove 303 are arranged on the inner wall of the first connecting through hole 301, a second axial limiting retaining ring 304 is arranged in the second retaining ring limiting groove 303, and the outer ring of the radial bearing 4 is limited between the second limiting step 302 and the second axial limiting retaining ring 304. A reliable connection is made between the rotation member 3 and the connecting shaft 201.
The end of the connecting rod 1 is provided with an eccentric connecting seat 2, the central shaft of the eccentric connecting seat 2 is eccentrically arranged relative to the central shaft of the connecting rod 1, and the connecting shaft 201 is formed by the outward bulge at the center of the eccentric connecting seat 2. It is also possible to make the connecting shaft 201 integrally formed with the end of the connecting rod 1, but it is easier to improve the existing connecting rod structure by providing the eccentric connecting seat 2.
A second connecting through hole 205 is formed in the center of the connecting shaft 201, a third connecting hole 101 is formed in the eccentric position of the end of the connecting rod 1, and the connecting shaft 201 penetrates through the second connecting through hole 205 through a first bolt 5 and extends into the third connecting hole 101 to be in threaded connection and fastening with the connecting shaft 201 so as to be fixedly connected with the end of the connecting rod 1; and a positioning pin 6 is arranged between the eccentric position of the eccentric connecting seat 2 and the end part of the connecting rod 1.
Furthermore, a first positioning hole 102 is formed in the end portion of the connecting rod 1, a second positioning hole 207 is formed in the end face, close to the connecting rod 1, of the eccentric connecting seat 2, and two ends of the positioning pin 6 are located in the first positioning hole 102 and the second positioning hole 207 respectively.
The rotating member 3 includes a rotating member body 305 and a rotating member cover 306, the first connecting through hole 301 is disposed on the rotating member body 305, and the rotating member cover 306 is sleeved outside the rotating member body 305 and detachably connected to the rotating member body 305. The rotator cover 306 is primarily for aesthetic and dust-proof purposes. In the present embodiment, the rotating member body 305 and the rotating member cover 306 are connected by the second bolt 307, as shown in fig. 5, the second bolt 307 is a position where the locking position is exposed outside the connecting rod 1.
In this embodiment, the rotation angle limiting structure is specifically composed of a guide arc-shaped limiting groove 206 disposed on the eccentric connecting seat 2 and a guide pin 308 disposed on the rotating member body 305.
The embodiment can be used for the quick butt joint locking structure of the charging basket fixing or equipment such as a lifting transfer machine, and can also replace other structures which adopt bolts and the like to realize quick butt joint locking at present.
The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention, and it is therefore to be understood that the utility model is not limited by the scope of the appended claims.
Claims (10)
1. The utility model provides an eccentric locking device of connecting rod, includes connecting rod (1), its characterized in that: the connecting end of the connecting rod (1) is provided with a rotating piece (3), the rotating piece (3) can rotate relative to the connecting rod (1), and a rotating central shaft of the rotating piece (3) is eccentrically arranged relative to a central shaft of the connecting rod (1) and eccentrically arranged relative to a central shaft of the rotating piece (3); a rotating angle limiting structure is arranged between the connecting rod (1) and the rotating piece (3), under the action of the rotating angle limiting structure, the rotating piece (3) rotates to have an unlocking position where the distance between the central axis of the rotating piece (3) and the central axis of the connecting rod (1) is not more than a and a locking position where the distance between the central axis of the rotating piece (3) and the central axis of the connecting rod (1) is not less than b, and b is more than a, under the unlocking position, the end structure formed by the rotating piece (3) and the connecting rod (1) can be penetrated through by the connecting hole of the connecting piece, and under the locking position, the end structure formed by the rotating piece (3) and the connecting rod (1) cannot be penetrated through by the connecting hole of the connecting piece.
2. Connecting rod eccentric locking device according to claim 1, characterized in that: the tip of connecting rod (1) is protruding to be equipped with connecting axle (201) relative to the eccentric position of central axis, it is equipped with first connect the through-hole (301) to rotate piece (3) relative to the eccentric position of central axis, connecting axle (201) part is located first connect the through-hole (301), it uses the center pin of connecting axle (201) as the axle center rotation to rotate piece (3).
3. Connecting rod eccentric locking device according to claim 2, characterized in that: the outer wall of the connecting shaft (201) is matched with the inner wall of the first connecting through hole (301) through a radial bearing (4).
4. Connecting rod eccentric locking device according to claim 3, characterized in that: a first limiting step (202) and a first retaining ring limiting groove (203) are formed in the outer wall of the connecting shaft (201), a first axial limiting retaining ring (204) is arranged in the first retaining ring limiting groove (203), and the inner ring of the radial bearing (4) is limited between the first limiting step (202) and the first axial limiting retaining ring (204);
and a second limiting step (302) and a second limiting groove (303) are arranged on the inner wall of the first connecting through hole (301), a second axial limiting retainer ring (304) is arranged in the second retaining groove (303), and the outer ring of the radial bearing (4) is limited between the second limiting step (302) and the second axial limiting retainer ring (304).
5. Connecting rod eccentric locking device according to claim 2, characterized in that: the end of the connecting rod (1) is provided with an eccentric connecting seat (2), the central shaft of the eccentric connecting seat (2) is eccentrically arranged relative to the central shaft of the connecting rod (1), and the connecting shaft (201) is formed by outwards protruding the center of the eccentric connecting seat (2).
6. Connecting rod eccentric locking device according to claim 5, characterized in that: a second connecting through hole (205) is formed in the center of the connecting shaft (201), a third connecting hole (101) is formed in the eccentric position of the end of the connecting rod (1), and the connecting shaft (201) penetrates through the second connecting through hole (205) through a first bolt (5) and extends into the third connecting hole (101) to be in threaded connection and fastened with the connecting shaft (201) so as to be fixedly connected with the end of the connecting rod (1); and a positioning pin (6) is arranged between the eccentric position of the eccentric connecting seat (2) and the end part of the connecting rod (1).
7. Connecting rod eccentric locking device according to claim 6, characterized in that: the end part of the connecting rod (1) is provided with a first positioning hole (102), the end face, close to the connecting rod (1), of one end of the eccentric connecting seat (2) is provided with a second positioning hole (207), and two ends of the positioning pin (6) are respectively located in the first positioning hole (102) and the second positioning hole (207).
8. Connecting rod eccentric locking device according to any of claims 2 to 7, characterized in that: the rotating piece (3) comprises a rotating piece body (305) and a rotating piece cover body (306), the first connecting through hole (301) is formed in the rotating piece body (305), and the rotating piece cover body (306) is sleeved outside the rotating piece body (305) and is detachably connected with the rotating piece body (305).
9. Connecting rod eccentric locking device according to any of claims 1 to 7, characterized in that: in the process that the rotating piece (3) rotates from the unlocking position to the locking position, a connecting line between the central shaft and the rotating shaft center of the rotating piece (3) rotates through a vertical line on the rotating shaft center.
10. Connecting rod eccentric locking device according to claim 9, characterized in that: under the locking position, an included angle alpha is formed between a connecting line between the central axis and the rotating axis of the rotating piece (3) and an outer horizontal line, and alpha is 0-45 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121740330.6U CN215805547U (en) | 2021-07-28 | 2021-07-28 | Eccentric locking device of connecting rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121740330.6U CN215805547U (en) | 2021-07-28 | 2021-07-28 | Eccentric locking device of connecting rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215805547U true CN215805547U (en) | 2022-02-11 |
Family
ID=80126378
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121740330.6U Active CN215805547U (en) | 2021-07-28 | 2021-07-28 | Eccentric locking device of connecting rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215805547U (en) |
-
2021
- 2021-07-28 CN CN202121740330.6U patent/CN215805547U/en active Active
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