CN214933279U - Chain transmission device - Google Patents
Chain transmission device Download PDFInfo
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- CN214933279U CN214933279U CN202120536141.0U CN202120536141U CN214933279U CN 214933279 U CN214933279 U CN 214933279U CN 202120536141 U CN202120536141 U CN 202120536141U CN 214933279 U CN214933279 U CN 214933279U
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- chain
- bracket
- base
- support
- bolt
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Abstract
The utility model relates to a mechanical transmission technical field, concretely relates to chain drive, include the frame of arranging on the support and set up the tensioning texture at frame rear portion, the beneficial effects of the utility model are that: the chain is arranged on the upper portion of the support, the chain wheel is rotatably arranged on the front portion of the machine base to share the weight of the chain, so that the chain is prevented from sagging, the tensioning structure is further arranged on the rear portion of the machine base arranged at one end of the upper portion of the support, tensioning force is provided for the machine base, and the chain is kept in a tensioning state.
Description
Technical Field
The utility model relates to a mechanical transmission technical field, concretely relates to chain drive.
Background
Due to the high transmission efficiency and the large torque carrying capacity, the chain transmission device is a very common transmission mode in the industry. In a traditional chain transmission device, a chain used for a period of time has a large pitch, so that an original tensioning mechanism fails, the chain is easy to fall off, and on the other hand, friction exists during meshing between the chain and a chain wheel, so that abrasion is easy to cause, and the situation is particularly obvious on the horizontally arranged chain.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving at least that the straining device of chain drive that exists easily became invalid among prior art or the correlation technique, chain and the at least one of the easy friction scheduling problem of sprocket.
In view of the above, the present invention provides a chain transmission device, which includes a bracket; the front part of the base is rotatably provided with a chain wheel; the chain is wound on the chain wheel; a tensioning structure for tensioning the chain; the upper portion of the support is provided with a plurality of the bases, the bases are arranged from one end of the upper portion of the support to the other end of the upper portion of the support, and the tensioning structure is arranged at the rear portion of the base at one end of the upper portion of the support.
Further, the tensioning structure includes first bolt and sets up in the first screw hole of the one end on support upper portion, the tensioning structure sets up in the frame rear portion of one end specifically is: the first bolt is abutted against the rear part of the base arranged at one end of the bracket through the first threaded hole.
Furthermore, the tensioning structure comprises a second bolt and a second threaded hole formed in the other end of the upper portion of the support, the front portion of the base and the front portion of the base are arranged in opposite directions, the front portion of the base is arranged at one end of the base, the front portion of the base is arranged at the other end of the base, the other end of the base is close to the upper portion of the support and is provided with a second threaded hole, and the second bolt is abutted to the rear portion of the base, which is arranged at the other end of the support, through the second threaded hole.
Further, the setting is in the support the frame rear portion of one end is provided with the piece of pretightning, first bolt warp first screw hole is in with the setting the support one end the rear portion butt of frame specifically does: the first bolt is abutted to the pre-tightening block.
Furthermore, two ends of the bracket are provided with triangular auxiliary brackets.
Further, the front portion of frame is rotatable to be provided with the sprocket, specifically is: the front part of the base is provided with a through hole which is used for being in running fit with the two ends of the transmission shaft, and the transmission shaft is in transmission connection with the chain wheel.
Further, the chain wheel comprises an upper chain wheel and a lower chain wheel, the upper chain wheel is in transmission connection with the upper end of the transmission shaft, and the lower chain wheel is in transmission connection with the lower end of the transmission shaft; the chain comprises an upper chain and a lower chain, the upper chain is wound on the upper chain wheel, and the lower chain is wound on the lower chain wheel.
Furthermore, the through hole is in running fit and connection with the two ends of the transmission shaft through bearings.
Further, the transmission shaft of at least one of the bases is in transmission connection with an output shaft of the motor.
Furthermore, the transmission shaft of the base arranged at one end of the support is in transmission connection with an output shaft of the motor.
The utility model has the advantages that: the chain is arranged on the upper portion of the support, the chain wheel is rotatably arranged on the front portion of the machine base to share the weight of the chain, so that the chain is prevented from sagging, the tensioning structure is further arranged on the rear portion of the machine base arranged at one end of the upper portion of the support, tensioning force is provided for the machine base, and the chain is kept in a tensioning state.
Drawings
Fig. 1 shows a schematic structural view of a chain transmission according to an embodiment of the invention;
FIG. 2 shows a detailed view of the structure at A in FIG. 1;
fig. 3 shows a schematic structural diagram of a stand according to an embodiment of the present invention;
fig. 4 shows a schematic structural diagram of a stand according to an embodiment of the present invention;
fig. 5 shows a schematic structural view of a chain transmission according to an embodiment of the invention;
the correspondence between reference numerals and component names in fig. 1 to 5 is shown in the following table:
| reference numerals | Name of component | Reference numerals | Name of component |
| 1 | |
2131 | Through |
| 101 | |
221 | |
| 112 | |
2211 | Pre-tightening |
| 12 | |
31 | Lower chain |
| 2 | |
32 | |
| 211 | |
5 | |
| 212 | |
51 | |
| 213 | Transmission shaft |
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings, which are illustrated in the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.
Some embodiments of the present invention are described below with reference to fig. 1 to 5.
In this embodiment, the sprocket is rotatably disposed on the base 2, which means that the sprocket rotates on the base 2 when operating, so as to drive the chain to realize the transmission function.
As shown in fig. 1 and 5, the present invention provides a chain transmission device, including: the front part of the machine base 2 is rotatably provided with a chain wheel; the chain is wound on the chain wheel; the tensioning structure is used for tensioning the chain; wherein, support 1 upper portion is provided with a plurality of frames 2, and frame 2 is arranged to the other end from support 1 upper portion's one end, and tensioning texture sets up the frame 2 rear portion at one end.
In this embodiment, a plurality of bases 2 are arranged on the upper portion of the bracket 1, a chain wheel is rotatably arranged on the front portion of the bases 2 to share the weight of the chain, so as to prevent the chain from sagging, and a tensioning structure is further arranged on the rear portion of the base 2 at one end of the upper portion of the bracket 1 to provide a tensioning force to the bases 2, so as to maintain the chain in a tensioned state.
In the above embodiment, the base 2 is rotatably provided with the sprocket, the sprocket plays a role of carrying and driving the chain, and the base 2 is arranged on the bracket 1 to share the weight of the chain itself, so that the sagging tendency of the chain can be alleviated. Alternatively, as shown in fig. 1, 4 stands 2 may be provided to share the weight of the chain itself. First bolt 112 is through first screw hole 101 and the frame 2 rear portion butt of setting in one end, through adjusting the position of closing soon of first screw hole 101 and first bolt 112, can play the effect of supporting frame 2, when the tensioning degree of frame 2 needs to be adjusted, only need twist first bolt 112, make first bolt 112 forward movement, and then drive frame 2 forward movement, thereby the distance between the both ends frame 2 on the extension support 1, effectively prolong the centre-to-centre spacing of the sprocket at both ends, thereby realize the effect of tensioning chain, make the chain can keep the state of tensioning, can not lead to the tensioning inefficacy because of the pitch grow of chain. For the base 2 detachably connected to the bracket 1, if the base 2 is connected to the bracket 1 by a thread, the tensioning adjustment can be performed only after the connection is detached. The arrangement of the first threaded holes 101 can be arranged according to actual conditions, as shown in fig. 5, for the case of multi-chain transmission, the upper and lower parts of the machine base 2 can be simultaneously supported through the first threaded holes 101, so that the chain can be tensioned.
In the above embodiment, the tensioning structure may be an electric push rod, and the electric push rod is arranged to keep abutting against the rear portion of the machine base 2, so that the chain is tensioned, and the chain is kept in a tensioned state, thereby avoiding the sagging condition of the chain.
Alternatively, as shown in fig. 2 and 5, the base 2 is disposed at one end of the bracket 1, the pre-tightening block 2211 is disposed at the rear portion of the base, and the first bolt 112 abuts against the pre-tightening block 2211.
It can be understood that the first bolt 112 abuts against the rear portion of the housing 2 through the first threaded hole 101, and the pre-tightening block 2211 is arranged to shorten the minimum distance between the rear portion of the housing 2 and the first threaded hole 101, so as to shorten the length of the first bolt 112 and save cost. The setting of the pre-tightening block 2211 should be determined according to the position of the first threaded hole 101.
Optionally, the front portion of the base 2 disposed at one end and the front portion of the base 2 disposed at the other end are disposed in opposite directions, the other end near the upper portion of the bracket 1 is provided with a second threaded hole, and the second bolt is abutted to the rear portion of the base 2 disposed at the other end of the bracket 1 through the second threaded hole.
It will be appreciated that the opposite arrangement allows the bases 2 at both ends of the frame 1 to be tightened by bolts. The arrangement and effect of the second bolt and the second threaded hole are the same as those of the first bolt 112 and the first threaded hole 101, and the description thereof is omitted.
In the above embodiment, as shown in the drawing, the both ends of the bracket 1 are provided with the triangular sub-brackets 121.
Specifically, in the adjustment process of the tensioning degree, the base 2 tends to move in the direction away from the support 1, the center of gravity of the base also moves correspondingly, triangular auxiliary supports 121 are arranged at the two ends of the support 1, the triangular auxiliary supports 121 enable the tensioning degree to be adjusted, the two ends of the support 1 can both keep certain supporting capacity, the length of the two ends of the support 1 is also prolonged by the arrangement of the auxiliary supports 121, the adjustment of the tensioning degree can be avoided, and the center of gravity of the base 2 leaves the support 1.
In the above embodiments, as shown in fig. 3 and 4, the base 2 is provided with the through hole 2131 for rotatably engaging with both ends of the transmission shaft 213, and the transmission shaft 213 is rotatably provided with the sprocket.
Specifically, the sprocket and the transmission shaft 213 on the base 2 mainly play a role of bearing a chain, the base 2 is provided with a through hole 2131 for the transmission shaft 213 to pass through, so that the transmission shaft 213 can rotate on the base 2, the transmission connection between the transmission shaft 213 and the output shaft 51, and the transmission connection between the sprocket and the transmission shaft 213 are generally realized by a key transmission mode, which belongs to the field of the prior art and is not described herein again. Optionally, bearings 221 may be further disposed at two ends of the transmission shaft 213, and rolling friction of the bearings 221 replaces direct sliding friction between the two ends of the transmission shaft 213 and the through hole 2131, so as to reduce friction.
Further, as shown in fig. 3 and 4, an upper sprocket 211 is disposed near the upper end of the transmission shaft 213, a lower sprocket 212 is disposed near the lower end of the transmission shaft 213, the chain includes an upper chain 32 and a lower chain 31, the upper chain 32 is wound around the upper sprocket 211, and the lower chain 31 is wound around the lower sprocket 212.
It can be understood that the arrangement of the transmission shaft 213 and the sprocket wheel in the above embodiments can be applied to a device using multi-chain transmission, taking double-chain transmission as an example, the upper sprocket wheel 211 and the lower sprocket wheel 212 are respectively arranged near two ends of the transmission shaft 213, and both the upper sprocket wheel 211 and the lower sprocket wheel 212 are in transmission connection with the transmission shaft 213, the upper sprocket wheel 211 and the lower sprocket wheel 212 mainly function as a carrying chain, and due to the fact that the upper sprocket wheel 211 and the lower sprocket wheel 212 are driven by a consistent driving force, the rotation in the same direction and at the same speed occurs, even if the transmission direction or speed of the upper chain 32 and the lower chain 31 changes due to external factors, since both the upper sprocket wheel 211 and the lower sprocket wheel 212 are arranged on the same transmission shaft 213, the change can be quickly adjusted back, so that the transmission direction and speed of the upper chain 32 and the lower chain 31 tend to be consistent again.
In the above embodiment, as shown in fig. 3, the transmission shaft 213 of at least one of the machine bases 2 is in transmission connection with the output shaft 51 of the motor 5.
It will be appreciated that the drive shaft 213, which is drivingly connected to the output shaft 51 of the motor 5, may function as a drive chain. The drive connection between the output shaft 51 and the drive shaft 213 can be realized by a keyed connection, which is not described in detail here.
In the above embodiment, as shown in fig. 1, the transmission shaft 213 of the base 2 disposed at one end of the bracket 1 is in transmission connection with the output shaft 51 of the motor 5.
It will be appreciated that the housing 2, which is drivingly connected to the motor 5, is disposed at one end of the frame 1 such that a greater extent of the sprocket thereon is wrapped by the chain, which is advantageous in providing sufficient drive to the chain.
In the present application, the terms "first", "second", "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more unless expressly limited otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", "front", "back", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or unit indicated must have a specific direction, be constructed and operated in a specific orientation, and therefore, should not be construed as limiting the present invention.
In the description of the present specification, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A chain drive, comprising:
a support;
the front part of the base is rotatably provided with a chain wheel;
the chain is wound on the chain wheel;
a tensioning structure for tensioning the chain;
the upper portion of the support is provided with a plurality of the bases, the bases are arranged from one end of the upper portion of the support to the other end of the upper portion of the support, and the tensioning structure is arranged at the rear portion of the base at one end of the upper portion of the support.
2. Chain transmission according to claim 1, wherein the tensioning structure comprises a first bolt and a first threaded hole arranged at one end of the upper part of the bracket, the tensioning structure being arranged at the rear of the seat at said one end, in particular: the first bolt is abutted against the rear part of the base arranged at one end of the bracket through the first threaded hole.
3. Chain transmission according to claim 1, characterized in that the tensioning structure comprises a second bolt and a second threaded hole provided at the other end of the upper part of the bracket, the front part of the seat provided at said one end being arranged opposite the front part of the seat provided at said other end, the other end near the upper part of the bracket being provided with a second threaded hole through which the second bolt abuts the rear part of the seat provided at the other end of the bracket.
4. Chain transmission according to claim 1, characterized in that a pre-tightening block is provided at the rear of the seat provided at said one end of the bracket, and a first bolt is in abutment with the rear of the seat provided at one end of the bracket via a first threaded hole, in particular: the first bolt is abutted to the pre-tightening block.
5. Chain transmission according to claim 1, characterized in that the brackets are provided with triangular sub-brackets at both ends.
6. Chain transmission according to claim 1, characterized in that the front part of the frame is rotatably provided with a sprocket, in particular: the front part of the base is provided with a through hole which is used for being in running fit with the two ends of the transmission shaft, and the transmission shaft is in transmission connection with the chain wheel.
7. The chain drive as set forth in claim 6, wherein said sprockets include an upper sprocket in driving connection with the upper end of the drive shaft and a lower sprocket in driving connection with the lower end of the drive shaft; the chain comprises an upper chain and a lower chain, the upper chain is wound on the upper chain wheel, and the lower chain is wound on the lower chain wheel.
8. Chain transmission according to claim 6, wherein the through hole is rotationally fitted and connected with both ends of the transmission shaft by means of bearings.
9. Chain drive as claimed in claim 6, characterized in that the drive shaft of at least one of the housings is in driving connection with an output shaft of an electric motor.
10. Chain transmission as claimed in claim 6, characterized in that the drive shaft of the machine base arranged at one end of the bracket is in driving connection with an output shaft of an electric motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120536141.0U CN214933279U (en) | 2021-03-15 | 2021-03-15 | Chain transmission device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120536141.0U CN214933279U (en) | 2021-03-15 | 2021-03-15 | Chain transmission device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214933279U true CN214933279U (en) | 2021-11-30 |
Family
ID=79040756
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120536141.0U Active CN214933279U (en) | 2021-03-15 | 2021-03-15 | Chain transmission device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214933279U (en) |
-
2021
- 2021-03-15 CN CN202120536141.0U patent/CN214933279U/en active Active
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| GR01 | Patent grant |