CN210739172U - Large-angle movable cross universal coupling for multi-freedom-degree swing table - Google Patents
Large-angle movable cross universal coupling for multi-freedom-degree swing table Download PDFInfo
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- CN210739172U CN210739172U CN201921768512.7U CN201921768512U CN210739172U CN 210739172 U CN210739172 U CN 210739172U CN 201921768512 U CN201921768512 U CN 201921768512U CN 210739172 U CN210739172 U CN 210739172U
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- shaped flange
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- cross
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- 230000008878 coupling Effects 0.000 title claims description 21
- 238000010168 coupling process Methods 0.000 title claims description 21
- 238000005859 coupling reaction Methods 0.000 title claims description 21
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 3
- 230000007423 decrease Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000009347 mechanical transmission Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
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Abstract
The utility model provides a wide-angle activity cross universal joint for multi freedom rocking platform, including two first Y-shaped blind flange and the second Y-shaped blind flange that set up in opposite directions, link together through the cross between, form crisscross mounting structure. The fork-shaped flange cover is provided with a base and a shoulder; the two shoulders are provided with opposite first through holes; the cross shaft is provided with a main body axis and four connecting shafts which are uniformly arranged; the first pair of connecting shafts penetrate into the first through holes along the first direction; the first fork-shaped flange cover and the second fork-shaped flange cover are installed in a cross mode through the cross shaft and can rotate relatively. The utility model discloses a redesign Y-shaped blind flange's structure for Y-shaped blind flange's width is narrower relatively, and raises the distance of through-hole to the flange terminal surface on the Y-shaped blind flange, increases the turned angle of Y-shaped blind flange, just can take place the interference phenomenon until the rotation to deviate 74 with the central axis.
Description
Technical Field
The utility model relates to a shaft coupling technical field particularly relates to a wide-angle activity cross universal joint who is used for multi freedom rocking platform.
Background
The shaft coupling is also called a shaft coupling, and is a mechanical part for firmly connecting a driving shaft and a driven shaft in different mechanisms to rotate together and transmitting motion and torque. The coupling can compensate the offset (including axial offset, radial offset, angular offset or comprehensive offset) between two shafts caused by inaccurate manufacture and installation, deformation or thermal expansion in work and the like, and can alleviate impact and absorb vibration, thereby having the most extensive application in the field of mechanical transmission.
The universal coupling has the structural characteristics that the two shafts are not on the same axis, and can realize continuous rotation of the two shafts under the condition of an included angle of the axes, and torque is transmitted. For example, when the universal coupling is used on equipment such as a six-degree-of-freedom swing table, the motion amplitude of the swing table can be increased, the rotation angle of the existing universal coupling cannot meet the requirement, and the rotation angle of a general universal coupling is 5-45 degrees away from the central axis and cannot meet the rotation angle requirement of part of equipment.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at provides a wide-angle activity cross universal joint to the problem that prior art exists, improves universal joint's movable angle scope.
In order to achieve the above object, the utility model adopts the following technical scheme:
a wide-angle movable cross universal coupling for a multi-freedom-degree swing table comprises
The first fork-shaped flange cover is provided with a base and shoulders which extend upwards along the central position of the base and are symmetrically distributed; the two shoulders are provided with opposite first through holes, and the connecting line of the two first through holes defines a first direction; the base is arranged for screwing connection with external equipment;
the cross shaft is provided with a main body axis and four connecting shafts which are uniformly arranged in the axial direction of the main body axis; the first pair of connecting shafts penetrate into the first through holes along the first direction;
the first needle roller bearings penetrate into the first through holes along the first direction and are sleeved at two ends of the first pair of connecting shafts;
the second fork-shaped flange cover has the same structure as the first fork-shaped flange cover, the shoulder parts of the second fork-shaped flange cover are provided with opposite second through holes, a second pair of connecting shafts of the cross shaft are sleeved in the two second through holes, and second needle roller bearings are arranged in the second through holes and sleeved on the second pair of connecting shafts, so that the first fork-shaped flange cover and the second fork-shaped flange cover form a cross installation through the cross shaft and can rotate relatively;
the distance from the center position of the first through hole to the base end face of the first fork-shaped flange cover is larger than the distance from the center position of the base of the first fork-shaped flange cover to the edge of the base of the first fork-shaped flange cover, and the distance from the center position of the second through hole to the base end face of the second fork-shaped flange cover is larger than the distance from the center position of the base of the second fork-shaped flange cover to the edge of the base of the second fork-shaped flange cover.
Further, in the first fork-shaped flange cover and the second fork-shaped flange cover, the size of the shoulder part of the first fork-shaped flange cover and the size of the shoulder part of the second fork-shaped flange cover are gradually decreased along the direction of the base towards the corresponding first through hole and the corresponding second through hole.
Furthermore, shaft clamp spring grooves are formed in the first through hole and the second through hole, and are tightly clamped in the shaft clamp spring grooves through check rings so as to block the end faces of the needle roller bearings and fix the corresponding connecting shafts.
Further, the cross shaft is made of steel and is subjected to surface chrome plating treatment.
Further, the angle of rotation between the second forked flange cover and the first forked flange cover is 74 degrees at the maximum.
Furthermore, a plurality of hole sites are uniformly arranged on the base and are used for being fixedly connected with external equipment.
Furthermore, the bases are all circular ring-shaped bases.
According to the utility model discloses a wide-angle activity cross universal joint for multi freedom sways platform of above technical scheme, the structure of Y-shaped blind flange has been redesigned for the width of Y-shaped blind flange is relatively narrower, and raised the distance of through-hole to the flange terminal surface on the Y-shaped blind flange, thereby make the Y-shaped blind flange have bigger activity space, increase turned angle, until rotate to with the central axis skew 74 just can take place the interference phenomenon, it is more nimble on the multi freedom sways the platform to use.
Drawings
Fig. 1a and 1b are the overall structure schematic diagram and the cross sectional view of the large-angle movable universal joint for the multi-degree-of-freedom swing platform of the present invention.
FIG. 2 is a schematic diagram of the maximum rotation angle of the large-angle movable cross universal coupling for the multi-degree-of-freedom swing table in the embodiment of FIGS. 1a and 1 b.
Fig. 3a and 3b are front and side views of a high angle movable cross-head joint for a multiple degree of freedom rocking platform.
Fig. 4 is a schematic view of a fork-shaped flange cover of a large-angle movable universal joint for a multi-degree-of-freedom rocking platform, taking a first fork-shaped flange cover as an example.
FIG. 5 is a schematic view of a cross-shaft of a large angle movable cross-universal coupling for a multiple degree of freedom rocking platform.
Detailed Description
For a better understanding of the technical content of the present invention, specific embodiments are described below in conjunction with the accompanying drawings.
In this disclosure, aspects of the present invention are described with reference to the accompanying drawings, in which a number of illustrative embodiments are shown. Embodiments of the present disclosure are not necessarily intended to include all aspects of the invention. It should be appreciated that the various concepts and embodiments described above, as well as those described in greater detail below, may be implemented in any of numerous ways.
In combination with the drawings, the large-angle movable cross universal coupling for the multi-freedom-degree swing platform according to the embodiment of the present disclosure includes two first fork-shaped flange covers 10 and second fork-shaped flange covers 20 which are oppositely disposed, and the first fork-shaped flange covers 10 and the second fork-shaped flange covers 20 are connected together through a cross shaft 30 to form a crisscross mounting structure. Referring to fig. 1a and 1b, a plurality of holes are uniformly formed on the base for fixedly connecting with external equipment.
As shown in fig. 1a and 1b, the first forked flanged cap 10 and the second forked flanged cap 20 have the same or identical structure. For example, in the example of fig. 4, the first fork-shaped flange cover has a base 11 and shoulders 12 extending upwards along a central position of the base and presenting a symmetrical distribution. The central position of the base can be set to be a hollow structure for installing external equipment conveniently. The two shoulders 12 are provided with opposite first through holes 13, and a connecting line of the two first through holes defines a first direction. The base 11 is configured for screw-down connection with an external device. Preferably, the base 11 is of annular design.
Referring to fig. 5, a cross 30 has a body axis 31 and four connecting shafts (32a to 32d) arranged uniformly in the axial direction of the body axis 31; wherein the first pair of connecting shafts 32a, 32c penetrate into the first through hole 13 along the first direction.
Preferably, cross-shaft 30 is made of 45 gauge steel and is chrome plated to withstand high loads. More preferably, the steel can be prepared by quenching and tempering No. 45 steel.
The first needle roller bearing 40 penetrates into the first through hole 13 along the first direction and is sleeved at two ends of the first pair of connecting shafts. In this embodiment, the first needle bearing 40 may be a standard component.
The second fork-shaped flange cover 20, which is the same as the first fork-shaped flange cover in structure in this embodiment, has a second through hole 21 opposite to the shoulder thereof, and the second pair of connecting shafts 32b, 32d of the cross shaft are sleeved in the two second through holes and are provided with the second pair of connecting shafts 32b, 32d
A second needle bearing (not shown, and may be of the same structure as the first needle bearing) is located in the second through hole 21 and is sleeved on the second pair of connecting shafts, so that the first forked flange cover 10 and the second forked flange cover 20 are mounted in a crisscross manner through a cross shaft and can rotate relatively.
In connection with the illustration, the distance (L1) from the central position of the first through-opening 13 to the base end face of the first fork-shaped flange cover is greater than the distance (L2) from the central position of the base of the first fork-shaped flange cover to its edge, while the distance from the central position of the second through-opening to the base end face of the second fork-shaped flange cover is greater than the distance from the central position of the base of the second fork-shaped flange cover to its edge.
Therefore, by redesigning the structure of the fork-shaped flange cover, the width of the fork-shaped flange cover is relatively narrow, the distance from the through hole in the fork-shaped flange cover to the end face of the flange is increased, the fork-shaped flange cover has larger moving space, the rotating angle is increased, and the interference phenomenon cannot occur until the fork-shaped flange cover is rotated to deviate from the central axis by 74 degrees.
As shown in fig. 1a, 1b and 4, the size of the shoulder of the first fork-shaped flange cover and the second fork-shaped flange cover decreases in the direction of the base towards the corresponding first through hole and the corresponding second through hole.
Referring to fig. 1a and 1b, shaft clamp spring grooves are formed in the first through hole 13 and the second through hole 21, and are clamped in the shaft clamp spring grooves through retaining rings 50 to block the end faces of the needle bearings, so that corresponding connecting shafts are fixed.
In various embodiments of the present invention, the maximum rotation angle between the second fork-shaped flange cover 20 and the first fork-shaped flange cover 10 is 74 degrees, and referring to fig. 2, the interference phenomenon does not occur between the second fork-shaped flange cover 20 and the first fork-shaped flange cover 10 until the rotation deviates from the central axis by 74 degrees.
Although the present invention has been described with reference to the preferred embodiments, it is not intended to limit the present invention. The present invention is intended to cover by those skilled in the art various modifications and adaptations of the invention without departing from the spirit and scope of the invention. Therefore, the protection scope of the present invention is subject to the claims.
Claims (7)
1. A wide-angle movable cross universal coupling for a multi-freedom-degree swing table is characterized by comprising:
the first fork-shaped flange cover is provided with a base and shoulders which extend upwards along the central position of the base and are symmetrically distributed; the two shoulders are provided with opposite first through holes, and the connecting line of the two first through holes defines a first direction; the base is arranged for screwing connection with external equipment;
the cross shaft is provided with a main body axis and four connecting shafts which are uniformly arranged in the axial direction of the main body axis; the first pair of connecting shafts penetrate into the first through holes along the first direction;
the first needle roller bearings penetrate into the first through holes along the first direction and are sleeved at two ends of the first pair of connecting shafts;
the second fork-shaped flange cover has the same structure as the first fork-shaped flange cover, the shoulder parts of the second fork-shaped flange cover are provided with opposite second through holes, a second pair of connecting shafts of the cross shaft are sleeved in the two second through holes, and second needle roller bearings are arranged in the second through holes and sleeved on the second pair of connecting shafts, so that the first fork-shaped flange cover and the second fork-shaped flange cover form a cross installation through the cross shaft and can rotate relatively;
the distance from the center position of the first through hole to the base end face of the first fork-shaped flange cover is larger than the distance from the center position of the base of the first fork-shaped flange cover to the edge of the base of the first fork-shaped flange cover, and the distance from the center position of the second through hole to the base end face of the second fork-shaped flange cover is larger than the distance from the center position of the base of the second fork-shaped flange cover to the edge of the base of the second fork-shaped flange cover.
2. The high angle kinematic cross-joint coupling for a multiple degree of freedom rocking platform of claim 1, wherein the first and second forked flange covers have shoulders whose dimensions decrease in a direction along the base toward the corresponding first and second through holes.
3. The large-angle movable cross universal coupling for the multi-degree-of-freedom rocking platform of claim 1, wherein the first through hole and the second through hole are both provided with shaft clamp spring grooves, and are clamped in the shaft clamp spring grooves through check rings to block the end surfaces of the needle roller bearings, so as to fix the corresponding connecting shafts.
4. The high angle kinematic cross universal coupling for a multiple degree of freedom rocking platform of claim 1, wherein the cross is steel and is chrome plated.
5. The high angle kinematic cross-joint coupling for a multiple degree of freedom rocking platform of any one of claims 1 to 4, wherein the angle of rotation between the second forked flange cover and the first forked flange cover is at most 74 degrees.
6. The large-angle movable cross universal coupling for the multi-degree-of-freedom swing table according to claim 1, wherein a plurality of hole sites are uniformly formed in the base and used for being fixedly connected with external equipment.
7. The large-angle movable cross universal coupling for the multi-degree-of-freedom rocking platform of claim 6, wherein the bases are all circular bases.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921768512.7U CN210739172U (en) | 2019-10-21 | 2019-10-21 | Large-angle movable cross universal coupling for multi-freedom-degree swing table |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921768512.7U CN210739172U (en) | 2019-10-21 | 2019-10-21 | Large-angle movable cross universal coupling for multi-freedom-degree swing table |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210739172U true CN210739172U (en) | 2020-06-12 |
Family
ID=71005489
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921768512.7U Expired - Fee Related CN210739172U (en) | 2019-10-21 | 2019-10-21 | Large-angle movable cross universal coupling for multi-freedom-degree swing table |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210739172U (en) |
-
2019
- 2019-10-21 CN CN201921768512.7U patent/CN210739172U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200612 |