CN212706753U - Wheel axle connection structure and robot - Google Patents
Wheel axle connection structure and robot Download PDFInfo
- Publication number
- CN212706753U CN212706753U CN202021512983.4U CN202021512983U CN212706753U CN 212706753 U CN212706753 U CN 212706753U CN 202021512983 U CN202021512983 U CN 202021512983U CN 212706753 U CN212706753 U CN 212706753U
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Abstract
The utility model discloses a wheel hub connection structure and robot relates to the assembly technology field. The shaft connection structure is used for connecting motor and wheel body, the shaft connection structure include the output shaft of motor still includes: the shaft sleeve is sleeved outside the output shaft, a mounting part is arranged on the side wall of the shaft sleeve in a protruding mode, and one end, far away from the motor, of the shaft sleeve is used for mounting the wheel body; the expansion assembly comprises a sleeve seat with an opening at one end and an expansion piece, a through hole for the output shaft to pass through is formed in the sealing end of the sleeve seat, the sleeve seat is sleeved on the output shaft, the expansion piece is arranged between the sleeve seat and the output shaft, two ends of the expansion piece are respectively abutted against the sealing end of the sleeve seat and the mounting part, and the opening end of the sleeve seat is connected with the mounting part through a fastening piece; when the fastener is tightened, the expansion member expands to secure the socket to the output shaft.
Description
Technical Field
The utility model relates to the field of assembly technique, in particular to wheel hub connection structure and robot.
Background
The axle, as the name implies, is a system consisting of a "wheel" and an "axle". The system can rotate around a coaxial line, and is equivalent to a lever system taking an axis as a fulcrum and a radius as a rod. Therefore, the wheel axle can change the torque of the torsion, thereby achieving the purpose of changing the size of the torsion.
Taking robot wheel axle connection as an example, conventional robot wheel axle system places the motor main part in the robot or outside, and the output shaft is connected with the shaft coupling, however this kind of mode connection effect is not good for the shaft coupling wearing and tearing are serious.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a wheel hub connection structure and robot aims at providing a connection effect is good wheel hub connection structure.
In order to achieve the above object, the utility model provides a wheel hub connection structure for connect motor and wheel body, wheel hub connection structure includes the output shaft of motor still includes:
the shaft sleeve is sleeved outside the output shaft, a mounting part is arranged on the side wall of the shaft sleeve in a protruding mode, and one end, far away from the motor, of the shaft sleeve is used for mounting the wheel body; and the number of the first and second groups,
the expansion assembly comprises a sleeve seat with an opening at one end and an expansion piece, a through hole for the output shaft to pass through is formed in the sealing end of the sleeve seat, the sleeve seat is sleeved on the output shaft, the expansion piece is arranged between the sleeve seat and the output shaft, two ends of the expansion piece are respectively abutted against the sealing end of the sleeve seat and the mounting part, and the opening end of the sleeve seat is connected with the mounting part through a fastening piece;
when the fastener is tightened, the expansion member expands to secure the socket to the output shaft.
Optionally, the expansion piece comprises an inner expansion sleeve and an outer expansion sleeve which are sleeved with each other, the outer side wall of the inner expansion sleeve is provided with a first conical surface, the inner side wall of the outer expansion sleeve is provided with a second conical surface, and the first conical surface and the second conical surface are matched with each other.
Optionally, the shaft sleeve is formed with an accommodating cavity with an opening at one end, a bottom wall of the accommodating cavity forms the mounting portion, and the expansion assembly is accommodated in the accommodating cavity.
Optionally, one of the outer annular wall of the sleeve seat and the inner side wall of the accommodating cavity is provided with a positioning portion, and the other is provided with a matching portion, and the positioning portion and the matching portion are in mutual positioning matching so as to enable the sleeve seat and the shaft sleeve to be mutually positioned.
Optionally, the positioning portion is a protrusion, and the matching portion is a groove.
Optionally, one end of the shaft sleeve, which is far away from the motor, forms a transmission end for mounting the wheel body, and a plurality of transmission parts are convexly arranged on an outer ring wall of the transmission end of the shaft sleeve at intervals along the circumferential direction; and/or the presence of a gas in the gas,
the other end of the shaft sleeve is provided with a transmission block for mounting the wheel body, and the transmission block is made of polyurethane.
Optionally, a plurality of transmission parts are convexly arranged on the outer annular wall of one end of the transmission block, which is far away from the shaft sleeve, at intervals along the circumferential direction.
The utility model discloses further provide a robot, include the casing, locate motor, the wheel body of casing and be used for with the wheel body install extremely the wheel hub connection structure of motor, wheel hub connection structure configuration is as above the wheel hub connection structure.
Optionally, an installation cavity is formed inside the housing, the robot further includes an installation seat which is arranged in the housing and provided with openings at two ends, the installation cavity is formed inside the housing, a partition plate is arranged in an inner cavity of the installation seat to divide the inner cavity into a first cavity and a second cavity, a through hole penetrates through the partition plate, a connecting hole which is communicated with the installation cavity and the first cavity is formed in the housing, so that the installation cavity and the first cavity jointly form an accommodating space, the motor is arranged in the accommodating space, and the output shaft penetrates through the through hole and extends into the second cavity, so that at least part of the wheel shaft connecting structure is accommodated in the second cavity.
Optionally, the through hole is provided with a sealing gasket; and/or the presence of a gas in the gas,
and a sealing element is sleeved on the output shaft and connected with the partition plate to seal the through hole.
The technical scheme of the utility model, design a wheel hub connection structure, be used for connecting motor and wheel body, set up the tight subassembly that expands between motor output shaft and axle sleeve, the cover seat of the tight subassembly that expands passes through the fastener and is connected with the installation department of axle sleeve, realize the fixed connection of tight subassembly and axle sleeve that expands, the tight both ends that expand of the tight subassembly that expands are the sealing end and the installation department of butt cover seat respectively, when the fastener is screwed, the cover seat promotes the tight piece that expands and expands so that the cover seat fastens in the output shaft, realize the fixed connection of tight subassembly and output shaft that expands, finally realize the fixed connection between output shaft and the axle sleeve, install the wheel body on the axle sleeve, just realized being connected of motor output shaft and wheel body, the utility model provides a wheel hub connection structure, simple structure, good connection effect, stability are strong.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic view of an embodiment of a wheel axle connecting structure provided by the present invention;
FIG. 2 is a cross-sectional view of the axle connection shown in FIG. 1;
FIG. 3 is an enlarged view of A shown in FIG. 2;
FIG. 4 is a perspective view of the bushing of FIG. 2;
fig. 5 is a perspective view of the socket shown in fig. 2.
The reference numbers illustrate:
| 1 | |
32 | |
| 2 | |
4 | Fastening |
| 21 | |
5 | |
| 22 | Containing cavity | 6 | |
| 221 | |
61 | |
| 23 | |
62 | |
| 231 | |
621 | The first chamber |
| 3 | |
622 | |
| 31 | Sleeve seat | 8 | |
| 311 | Via hole | 9 | |
| 312 | Mating part |
The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that, if directional indications (such as upper, lower, left, right, front, back, outer and inner … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout includes three juxtapositions, exemplified by "A and/or B" including either A or B or both A and B. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
Conventional robot wheel axle system places the motor main part in the robot or outside, and the output shaft is connected with the shaft coupling, and this kind of mode connection effect is not good however for the shaft coupling wearing and tearing are serious.
In view of this, the utility model provides a wheel hub connection structure and robot aims at providing a connection effect is good wheel hub connection structure. Fig. 1 is a schematic view of an embodiment of a wheel axle connecting structure provided by the present invention; FIG. 2 is a cross-sectional view of the axle connection shown in FIG. 1; FIG. 3 is an enlarged view of A shown in FIG. 2; FIG. 4 is a perspective view of the bushing of FIG. 2; fig. 5 is a perspective view of the socket shown in fig. 2.
As shown in fig. 1-2, an embodiment of the present invention provides a wheel axle connecting structure for connecting a motor 5 and a wheel body, the wheel axle connecting structure includes an output shaft 1 of the motor 5, and further includes a shaft sleeve 2 and an expansion assembly 3, wherein the shaft sleeve 2 is sleeved outside the output shaft 1, an installation portion 21 is protruded on a side wall of the shaft sleeve 2, and one end of the shaft sleeve 2 away from the motor 5 is used for installing the wheel body; the expansion assembly 3 comprises a sleeve seat 31 with an opening at one end and an expansion piece 32, a through hole 311 for the output shaft 1 to pass through is arranged at the sealing end of the sleeve seat 31, the sleeve seat 31 is sleeved on the output shaft 1, the expansion piece 32 is arranged between the sleeve seat 31 and the output shaft 1, the two ends of the expansion piece are respectively abutted against the sealing end of the sleeve seat 31 and the mounting part 21, and the opening end of the sleeve seat 31 is connected with the mounting part 21 through a fastening piece 4; when the fastener 4 is tightened, the expansion member 32 expands to fasten the socket 31 to the output shaft 1.
In the technical scheme of the utility model, a wheel axle connecting structure is designed for connecting the motor 5 and the wheel body, an expansion assembly 3 is arranged between an output shaft 1 of a motor 5 and a shaft sleeve 2, a sleeve seat 31 of the expansion assembly 3 is connected with a mounting part 21 of the shaft sleeve 2 through a fastening piece 4, the expansion assembly 3 is fixedly connected with the shaft sleeve 2, two ends of an expansion piece 32 of the expansion assembly 3 are respectively abutted against a sealing end and the mounting part 21 of the sleeve seat 31, when fastener 4 screwed, cover seat 31 promotes bloated tight piece 32 and expands so that cover seat 31 fastens in output shaft 1, realizes bloated tight subassembly 3 and output shaft 1's fixed connection, finally realizes the fixed connection between output shaft 1 and the axle sleeve 2, installs the wheel body on axle sleeve 2, has just realized being connected of motor 5 output shaft 1 and wheel body, the utility model provides a wheel hub connection structure, simple structure, excellent in connection effect, stability are strong.
To the concrete form of the tight piece 32 that expands, the utility model discloses do not do the restriction, preferably, the tight piece 32 that expands is for the tight cover that expands, more preferably the tight cover that expands of Z1 opening type, specifically, the tight piece 32 that expands includes the interior cover that expands and the cover that expands of each other registrates, and the lateral wall of the interior cover that expands is equipped with first conical surface, and the inside wall of the cover that expands outward is equipped with the second conical surface, and first conical surface and second conical surface are mutually supported. The Z1 open type expansion sleeve is axially extruded to cause mechanical deformation, so that an inner conical ring, namely the inner expansion sleeve, is slightly deformed inwards, an outer conical ring, namely the outer expansion sleeve, is slightly deformed outwards, and the working condition of internal tightening and external expansion is generated; and meanwhile, static friction exists between the inner conical ring and the outer conical ring, so that the output shaft 1 can transmit power to an external coupling device through the static friction, and huge holding force is generated between the inner conical ring and the shaft and between the outer conical rings to realize the keyless coupling of the machine part and the shaft. Simple structure and strong stability.
Further, referring to fig. 4, the shaft sleeve 2 is formed with an accommodating cavity 22 with an opening at one end, a bottom wall of the accommodating cavity 22 forms the mounting portion 21, and the expansion assembly 3 is accommodated in the accommodating cavity 22. During specific connection, the expansion piece 32 is arranged in the sleeve seat 31, the sleeve seat 31 is arranged in the containing cavity 22 and is preassembled by the fastening piece 4, the preassembled assembly is mounted to the output shaft 1 of the motor 5, the fastening piece 4 can adopt pan head screws, preferably 4, the pan head screws are fastened by a screwdriver, the sleeve seat 31 moves towards the direction of the shaft sleeve 2 under the action of screw tension, and because the inner expansion sleeve and the outer expansion sleeve of the expansion piece 32 are conical rings with openings, the inner ring and the outer ring can deform and are extruded with the output shaft 1 and the sleeve seat 31 of the motor 5, so that power is transmitted by friction, the assembly is convenient, and the operation is convenient.
When the sleeve seat 31 is placed in the accommodating cavity 22, in order to facilitate the installation and alignment, in the embodiment of the present invention, referring to fig. 4 and 5, one of the outer annular wall of the sleeve seat 31 and the inner side wall of the accommodating cavity 22 is provided with a positioning portion 221, and the other is provided with a matching portion 312, and the positioning portion 221 and the matching portion 312 are mutually positioned and matched, so that the sleeve seat 31 and the shaft sleeve 2 are mutually positioned.
As to the positioning and fitting form of the positioning portion 221 and the fitting portion 312, the present invention is not limited, and preferably, referring to fig. 4 and 5, the positioning portion 221 is a protrusion, and the fitting portion 312 is a groove. The arrangement of the bulges and the grooves can ensure that the sleeve seat 31 cannot be eccentric when the fastener 4 is tightened, thereby playing a role in positioning; on the other hand, the shearing force on the fastening element 4 for locking can be distributed when the motor 5 rotates.
In order to facilitate transmission, please refer to fig. 4 in the embodiment of the present invention, one end of the shaft sleeve 2 away from the motor 5 constitutes a transmission end 23 for installing the wheel body, the outer annular wall of the transmission end 23 of the shaft sleeve 2 is provided with a plurality of transmission portions 231 along the circumferential interval, correspondingly, the wheel body joint is provided with a transmission groove matched with the plurality of transmission portions 231, because the matching surfaces of the transmission groove and the transmission portions 231 are planes and have a plurality of matching surfaces, the wheel body is not easy to wear during transmission, and the stability is high.
Further, the shaft sleeve 2 can be a shaft coupler, the shaft sleeve 2 can be integrally formed and made of 7075-T6 aluminum alloy, the strength and the wear resistance are good, and the shaft coupler is a rigid shaft coupler. In another embodiment of the present invention, the other end of the shaft sleeve 2 is provided with a transmission block for mounting the wheel body, and the transmission block is made of polyurethane. In order to ensure normal transmission, the shaft sleeve 2 is still made of 7075-T6 aluminum alloy, the transmission block is made of polyurethane material with the Shore hardness of more than 90 degrees, the transmission block is used for transmitting power, the transmission block made of polyurethane material can play a better buffering role under the condition of large impact of the transmitted piece, and the buffering effect can also be realized under the condition of large starting acceleration of the motor 5. At this time, the driving portion 231 is disposed on the outer circumferential wall of one end of the driving block away from the shaft sleeve 2 and is protruded along the circumferential direction of the driving block at intervals.
The utility model discloses further provide a robot, including the casing, locate motor 5, the wheel body of casing and be used for installing the wheel body to motor 5's wheel hub connection structure, wheel hub connection structure configuration is as above wheel hub connection structure.
In order to reduce the size of the robot and reduce the cost, please refer to fig. 1 to 3, an installation cavity is formed inside the housing, the robot further includes an installation seat 6 disposed on the housing and having openings at two ends, a partition plate 61 is disposed in an inner cavity 62 of the installation seat 6 to partition the inner cavity 62 into a first cavity 621 and a second cavity 622, a through hole is disposed on the partition plate 61, a connection hole is disposed on the housing and is used for connecting the installation cavity and the first cavity 621, so that the installation cavity and the first cavity 621 jointly form an accommodation space, the motor 5 is disposed in the accommodation space, and the output shaft 1 penetrates through the through hole and extends into the second cavity 622, so that at least part of the wheel axle connection structure is accommodated in the second cavity 622. Thus, a portion of the motor 5 is disposed in the first cavity 621, which reduces the occupied space inside the robot and avoids the disadvantages of D-type shaft transmission. The motor 5 and the shaft sleeve 2 are wrapped in the mounting seat 6, so that the shock resistance is higher.
In order to strengthen the ability of the different environment of adaptation of robot the embodiment of the utility model provides an in, the through-hole is equipped with seal ring 8, and sealed through-hole prevents that debris from entering into motor 5 through the through-hole, prolongs the life-span of robot. In addition, the contact area of the shaft end sealing part is small, and the friction resistance in rotation can be reduced.
Further, referring to fig. 2, a sealing member is sleeved on the output shaft 1, and the sealing member is connected with the partition plate 61 to seal the through hole. In addition, grease and an O-shaped sealing ring are filled between the sealing element of the output shaft 1 and the mounting seat 6 to realize shaft end sealing. Therefore, the robot can work in special environments such as underwater, and the applicability of the robot is enhanced.
In addition, referring to fig. 2, the robot further includes a plurality of bearings 9 sleeved outside the mounting seat 6, preferably, two bearings 9 are provided, the wheel body is mounted on the deep groove ball bearing, and the double-row deep groove ball bearing can ensure the stability of rotation.
The above only is the preferred embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structure changes made by the contents of the specification and the drawings under the inventive concept of the present invention, or the direct/indirect application in other related technical fields are included in the patent protection scope of the present invention.
Claims (10)
1. The utility model provides a wheel axle connection structure for connect motor and wheel body, wheel axle connection structure includes the output shaft of motor, its characterized in that still includes:
the shaft sleeve is sleeved outside the output shaft, a mounting part is arranged on the side wall of the shaft sleeve in a protruding mode, and one end, far away from the motor, of the shaft sleeve is used for mounting the wheel body; and the number of the first and second groups,
the expansion assembly comprises a sleeve seat with an opening at one end and an expansion piece, a through hole for the output shaft to pass through is formed in the sealing end of the sleeve seat, the sleeve seat is sleeved on the output shaft, the expansion piece is arranged between the sleeve seat and the output shaft, two ends of the expansion piece are respectively abutted against the sealing end of the sleeve seat and the mounting part, and the opening end of the sleeve seat is connected with the mounting part through a fastening piece;
when the fastener is tightened, the expansion member expands to secure the socket to the output shaft.
2. The wheel axle connecting structure according to claim 1, wherein the expansion member comprises an inner expansion sleeve and an outer expansion sleeve which are fitted to each other, an outer side wall of the inner expansion sleeve is provided with a first tapered surface, an inner side wall of the outer expansion sleeve is provided with a second tapered surface, and the first tapered surface and the second tapered surface are fitted to each other.
3. The wheel axle connecting structure according to claim 1, wherein the boss is formed with a receiving cavity having an opening at one end, a bottom wall of the receiving cavity constituting the mounting portion, and the expansion assembly is received in the receiving cavity.
4. The axle connecting structure according to claim 3, wherein one of the outer annular wall of the sleeve holder and the inner side wall of the accommodating chamber is provided with a positioning portion, and the other one of the outer annular wall and the inner side wall of the accommodating chamber is provided with a fitting portion, and the positioning portion and the fitting portion are in positioning fit with each other so as to position the sleeve holder and the sleeve with each other.
5. The axle connection structure according to claim 4, wherein the positioning portion is a protrusion, and the fitting portion is a groove.
6. The wheel axle connecting structure according to claim 1, wherein an end of the sleeve remote from the motor constitutes a driving end for mounting the wheel body, and a plurality of driving portions are protruded at intervals in a circumferential direction on an outer circumferential wall of the driving end of the sleeve; and/or the presence of a gas in the gas,
the other end of the shaft sleeve is provided with a transmission block for mounting the wheel body, and the transmission block is made of polyurethane.
7. The wheel axle connecting structure according to claim 6, wherein a plurality of transmission portions are projected from an outer circumferential wall of an end of the transmission block remote from the boss at intervals in a circumferential direction.
8. A robot comprising a housing, a motor provided in the housing, a wheel, and a wheel shaft connection structure for mounting the wheel to the motor, the wheel shaft connection structure being configured as the wheel shaft connection structure according to any one of claims 1 to 7.
9. The robot of claim 8, wherein a mounting cavity is formed inside the housing, the robot further comprises a mounting seat disposed in the housing and having two open ends, a partition is disposed in an inner cavity of the mounting seat to divide the inner cavity into a first cavity and a second cavity, a through hole is disposed in the partition, a connecting hole is disposed in the housing to connect the mounting cavity and the first cavity, so that the mounting cavity and the first cavity together form an accommodating space, the motor is disposed in the accommodating space, and the output shaft extends into the second cavity through the through hole to receive at least a portion of the wheel axle connecting structure in the second cavity.
10. A robot as claimed in claim 9, wherein the through-hole is provided with a sealing gasket; and/or the presence of a gas in the gas,
the output shaft is sleeved with a sealing element, and the sealing element is connected with the partition plate to seal the through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021512983.4U CN212706753U (en) | 2020-07-27 | 2020-07-27 | Wheel axle connection structure and robot |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021512983.4U CN212706753U (en) | 2020-07-27 | 2020-07-27 | Wheel axle connection structure and robot |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212706753U true CN212706753U (en) | 2021-03-16 |
Family
ID=74910390
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021512983.4U Active CN212706753U (en) | 2020-07-27 | 2020-07-27 | Wheel axle connection structure and robot |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212706753U (en) |
-
2020
- 2020-07-27 CN CN202021512983.4U patent/CN212706753U/en active Active
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