Opposite joint rotating shaft assembly

Abstract

An opposite joint rotating shaft assembly comprises a first rotating driving device and a second rotating driving device, the output end of the first rotating driving device and the output end of the second rotating driving device are provided with a first rotating shaft structure and a second rotating shaft structure respectively, and the first rotating shaft structure and the second rotating shaft structure are coaxially and oppositely arranged. A coaxial stable sleeve structure is further installed between the first rotating shaft structure and the second rotating shaft structure, and a first output wheel disc structure and a second output wheel disc structure are further arranged on the first rotating shaft structure and the second rotating shaft structure respectively. According to the utility model, the structure is exquisite, so that the opposite shaft structures can meet the requirement that the opposite shaft structures do not interfere with each other and work independently, and the suspended opposite end parts are prevented from vibrating in the working process, so that the shaft structures move stably.

Description

Technical Field

[0001] The utility model belongs to the technical field of joint shaft structures, and in particular relates to a relative joint rotation shaft component. Background Art

[0002] In many relatively sophisticated output or transmission rotating shaft fields, two opposing rotating shaft structures can usually only be realized by suspending the opposite ends of the two shafts without contact in order to achieve the requirement of the two rotating shafts working independently. However, this method causes the two rotating shafts to vibrate greatly during the working process, resulting in extremely unstable movement. This makes it difficult to achieve the required power transmission accuracy in equipment with high transmission requirements such as precision instruments or robots. For example, the announcement number CN 221391059 U's patent document discloses a robot joint transmission mechanism, including a first bracket, a first motor, a first input end, a first transmission belt and a first output cable drum; the first motor is arranged at the upper end of the first bracket, the first output cable drum is arranged at the lower end of the first bracket, the first input end includes a first input cable drum, the power output end of the first motor is connected to the first input cable drum, the outer diameter of the first input cable drum ranges from 15mm to 45mm, the first transmission belt includes a first chain and a first pull wire, the first chain is connected to the first input cable drum, and the first pull wire is wound around the first output cable drum; it also includes a second bracket, a second motor, a second input end, a second transmission belt, an idler cable drum and a second output cable drum; the upper end of the second bracket is rotatably connected to the lower end of the first bracket, the second motor is arranged at the upper end of the first bracket, the second output cable drum is arranged at the lower end of the second bracket, the power output end of the second motor is connected to the second input end, the idler cable drum is coaxially arranged with the first output cable drum, the second transmission belt is connected to the second input end, and the second transmission belt is wound around the idler cable drum and then wound around the second output cable drum. The input end shafts corresponding to the first motor and the second motor are arranged opposite to each other, and the idler pulley reel is coaxial with the first output reel. Both may require two relative shaft structures to meet the requirements of working independently without interfering with each other, and to avoid extremely unstable movement and vibration during operation due to the relative ends being suspended in the air. Summary of the Invention

[0003] In response to the deficiencies of the prior art, the utility model proposes a relative joint rotating shaft assembly with a sophisticated structure, which enables the relative shaft structures to meet the requirements of working independently without interfering with each other, and avoids vibration of the suspended relative ends during operation, thereby making the shaft structure movement stable.

[0004] The specific technical solutions are as follows:

[0005] A relative joint rotation axis assembly includes a first rotation drive device and a second rotation drive device, wherein the output ends of the first rotation drive device and the second rotation drive device are respectively installed with a first rotation axis structure and a second rotation axis structure, the first rotation axis structure and the second rotation axis structure are coaxial and arranged opposite to each other, a coaxial stabilization kit structure is also installed between the first rotation axis structure and the second rotation axis structure, and a first output wheel disc structure and a second output wheel disc structure are also respectively arranged on the first rotation axis structure and the second rotation axis structure.

[0006] Preferably, the first rotation driving device and the second rotation driving device are motor modules.

[0007] Preferably, the coaxial stabilization kit structure includes a stabilization sleeve, one end of which is connected to the side of the first output wheel disc structure, and the other end of the stabilization sleeve is provided with a bearing mounting cavity, a rotating bearing structure is installed in the bearing mounting cavity, and the rotating bearing structure is sleeved on the end of the second rotating shaft structure.

[0008] Preferably, the rotating bearing structure is a deep groove ball bearing, a self-aligning ball bearing or an angular contact ball bearing.

[0009] Preferably, the outer ring of the rotating bearing structure is interference fit with the inner wall of the bearing installation cavity, and the inner ring of the rotating bearing structure is interference fit with the end of the second rotating shaft structure.

[0010] Preferably, stepped platforms are provided on the inner wall of the bearing installation cavity and the end of the second rotating shaft structure to respectively abut against the opposite side surfaces of the outer ring and the inner ring of the rotating bearing structure.

[0011] Preferably, a mounting through hole is provided in the center of the first rotating axis structure, a mounting threaded hole is provided in the center of the second rotating axis structure, the coaxial stabilization kit structure also includes a tensioning screw structure, the tensioning screw structure passes through the mounting through hole and cooperates with the mounting threaded hole, and a thrust bearing structure is provided between the nut of the tensioning screw structure and the side wall of the first rotating axis structure.

[0012] Preferably, the first output wheel disc structure and the second output wheel disc structure are gears, sprockets, synchronous pulleys or crankshaft structures.

[0013] Preferably, the first output wheel disc structure and the side surface of the stabilizing sleeve are fixed to the first rotating shaft structure by means of a screw structure, and the second output wheel disc structure is mounted on the second rotating shaft structure by means of a spline structure.

[0014] The beneficial effects of the present invention are as follows: the overall structure is exquisite, and the stabilizing sleeve of the coaxial stabilizing kit structure is arranged on the outside of the first rotating shaft structure and the second rotating shaft structure, and rotates with the second rotating shaft structure to realize the stable matching connection of the relative ends of the two rotating shafts, so that they can complete independent work without interfering with each other, and also avoid the vibration of the suspended relative ends during work; one end of its tensioning screw structure is fixedly connected to the second rotating shaft structure, and the other end of the tensioning screw structure rotates with the first rotating shaft structure, thereby further enhancing the stability of the movement of the rotating shaft structure, and the stabilizing sleeve and the tensioning screw structure respectively rotate with different rotating shafts to make the acting torque more balanced and the effect better; the stabilizing sleeve and the tensioning screw structure can also be used separately, but the stabilizing sleeve and the tensioning screw structure are used together for better effect and longer service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall installation structure of the utility model.

[0016] Figure 2 It is a schematic diagram of the cross-sectional structure of the entire utility model.

[0017] Figure 3 for Figure 2 A local enlarged schematic diagram of point A in the middle.

[0018] Description of reference numerals: first rotary drive device 4; second rotary drive device 5; coaxial stabilization kit structure 6;

[0019] First rotating shaft structure 41; second rotating shaft structure 51; first output wheel disc structure 42; second output wheel disc structure 52; mounting through hole 43; mounting threaded hole 53;

[0020] Stable shaft sleeve 61; bearing mounting cavity 62; rotating bearing structure 63; tension screw structure 64; thrust bearing structure 65. DETAILED DESCRIPTION

[0021] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more precise definition of the protection scope of the present invention.

[0022] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0023] It should also be noted that, in the description of the present invention, unless otherwise expressly specified or limited, the terms "disposed," "installed," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections. They may refer to direct connections or connections through an intermediate medium, or to internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances. Example

[0024] like Figure 1 、 Figure 2 and Figure 3 As shown: a relative joint rotation axis assembly is provided with a first rotation drive device 4 and a second rotation drive device 5. The first rotation drive device 4 and the second rotation drive device 5 are motor modules, and can also be other rotation drive devices such as hydraulic motors or pneumatic motors.

[0025] The output ends of the first rotary drive device 4 and the second rotary drive device 5 are respectively connected to the first rotary shaft structure 41 and the second rotary shaft structure 51. It should be emphasized here that the connection between the rotary drive device and the rotary shaft structure can be a direct connection or an indirect connection through a transmission mechanism; the first rotary shaft structure 41 and the second rotary shaft structure 51 are coaxial and oppositely arranged. In many devices, two coaxial and opposite rotary shafts are conducive to a sophisticated design in a limited space. A coaxial stabilization kit structure 6 is also installed between the first rotary shaft structure 41 and the second rotary shaft structure 51. A first output pulley structure 42 and a second output pulley structure 52 are also provided on the first rotary shaft structure 41 and the second rotary shaft structure 51, respectively. The first output pulley structure 42 and the second output pulley structure 52 can be transmission or output structures such as gears, sprockets, synchronous pulleys or crankshaft structures.

[0026] The coaxial stabilization kit structure 6 includes a stabilization sleeve 61, one end of which is connected to the side of the first output wheel disc structure 42, and the other end of the stabilization sleeve 61 is provided with a bearing mounting cavity 62, in which a rotating bearing structure 63 is installed. The rotating bearing structure 63 is sleeved on the end of the second rotating shaft structure 51.

[0027] The first output wheel disc structure 42 and the side surfaces of the stabilizing sleeve 61 are fixed to the first rotating shaft structure 41 by means of screw structures, and the second output wheel disc structure 52 is mounted on the second rotating shaft structure 51 by means of a spline structure.

[0028] Among them, the rotating bearing structure 63 is a deep groove ball bearing, a self-aligning ball bearing or an angular contact ball bearing. The outer ring of the rotating bearing structure 63 is interference fit with the inner wall of the bearing mounting cavity 62, and the inner ring of the rotating bearing structure 63 is interference fit with the end of the second rotating shaft structure 51.

[0029] A stepped platform is provided on the inner wall of the bearing mounting cavity 62 and the end of the second rotating shaft structure 51, which respectively press against the opposite sides of the outer ring and inner ring of the rotating bearing structure 63, that is, a stepped platform is provided on the inner wall of the bearing mounting cavity 62, preferably a ring-shaped limit platform, which presses against the left side of the outer ring of the rotating bearing structure 63; a stepped platform is provided on the end of the second rotating shaft structure 51, preferably a ring-shaped limit platform, which presses against the right side of the inner ring of the rotating bearing structure 63, to avoid the inner and outer rings of the rotating bearing structure 63 from getting stuck, and is conducive to cooperation with the subsequent tightening screw structure 64.

[0030] Furthermore, a mounting through hole 43 is provided in the center of the first rotating shaft structure 41, and a mounting threaded hole 53 is provided in the center of the second rotating shaft structure 51. The coaxial stabilization kit structure 6 also includes a tensioning screw structure 64, which passes through the mounting through hole 43 and cooperates with the mounting threaded hole 53, and a thrust bearing structure 65 is provided between the nut of the tensioning screw structure 64 and the side wall of the first rotating shaft structure 41. The thrust bearing structure 65 is a thrust ball bearing, a thrust needle roller bearing, a thrust tapered roller bearing or a thrust spherical roller bearing, etc.

[0031] Implementation principle: A coaxial stabilization kit structure 6 is installed between the first rotating shaft structure 41 and the second rotating shaft structure 51, and the coaxial stabilization kit structure 6 mainly includes a stabilization sleeve 61 and a tensioning screw structure 64. The stabilization sleeve 61 is arranged on the outside of the first rotating shaft structure 41 and the second rotating shaft structure 51, and rotates with the first rotating shaft structure 41 or the second rotating shaft structure 51 to achieve a stable matching connection between the opposite ends of the two rotating shafts, so that the two opposite rotating shafts can complete independent work without interfering with each other, and also avoid the vibration of the suspended opposite ends during work; the tensioning screw structure 64 is arranged at the inner center of the first rotating shaft structure 41 and the second rotating shaft structure 51, one end of the tensioning screw structure 64 is fixedly connected to the first rotating shaft structure 41 or the second rotating shaft structure 51, and then the other end of the tensioning screw structure 64 rotates with the second rotating shaft structure 51 or the first rotating shaft structure 41, that is, the fixed end of the tensioning screw structure 64 It acts on different rotating axes from the rotating end, thereby further enhancing the stability of the rotating axis structure movement; wherein, the above-mentioned stabilizing sleeve 61 or the tensioning screw structure 64 can be separately arranged according to the above-mentioned scheme to realize the independent operation of the relative first rotating axis structure 41 or the second rotating axis structure 51, and the rotating axis structure has high stability during operation, and will not cause vibration and other problems that affect the working accuracy and fatigue life, but the stabilizing sleeve 61 or the tensioning screw structure 64 has a poor effect when used alone and has a poor service life. The stabilizing sleeve 61 and the tensioning screw structure 64 are used at the same time, and the tensioning screw structure 64 also has an auxiliary function of tightening the two rotating axes, so that the two rotating axes are tightly matched with the stabilizing sleeve 61, so that the balance and stability effect between the two rotating axes is better, and when the above-mentioned stabilizing sleeve 61 and the tensioning screw structure 64 are used at the same time, the stabilizing sleeve 61 and the tensioning screw structure 64 respectively have a better rotational cooperation effect with different rotating axes, and the acting torque is more balanced.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention shall be defined by the appended claims.

Claims

1. A relative joint rotation axis assembly, characterized in that: The invention comprises a first rotary drive device (4) and a second rotary drive device (5), wherein the output ends of the first rotary drive device (4) and the second rotary drive device (5) are connected to a first rotary shaft structure (41) and a second rotary shaft structure (51), respectively; the first rotary shaft structure (41) and the second rotary shaft structure (51) are coaxial and arranged opposite to each other; a coaxial stabilizing kit structure (6) is installed between the first rotary shaft structure (41) and the second rotary shaft structure (51); and a first output wheel disc structure (42) and a second output wheel disc structure (52) are respectively arranged on the first rotary shaft structure (41) and the second rotary shaft structure (51).

2. The relative joint rotation axis assembly according to claim 1, characterized in that: The first rotation drive device (4) and the second rotation drive device (5) are motor modules.

3. The relative joint rotation axis assembly according to claim 1 or 2, characterized in that: The coaxial stabilizing kit structure (6) includes a stabilizing sleeve (61), one end of which is connected to the side of the first output wheel disc structure (42), and the other end of which is provided with a bearing mounting cavity (62), in which a rotating bearing structure (63) is mounted, and the rotating bearing structure (63) is sleeved on the end of the second rotating shaft structure (51).

4. The relative joint rotation axis assembly according to claim 3, characterized in that: The rotating bearing structure (63) is a deep groove ball bearing, a self-aligning ball bearing or an angular contact ball bearing.

5. The relative joint rotation axis assembly according to claim 4, characterized in that: The outer ring of the rotating bearing structure (63) is interference-fitted with the inner wall of the bearing installation cavity (62), and the inner ring of the rotating bearing structure (63) is interference-fitted with the end of the second rotating shaft structure (51).

6. The relative joint rotation axis assembly according to claim 4 or 5, characterized in that: Stepped platforms are provided on the inner wall of the bearing mounting cavity (62) and the end of the second rotating shaft structure (51) to respectively abut against the opposite side surfaces of the outer ring and the inner ring of the rotating bearing structure (63).

7. The relative joint rotation axis assembly according to any one of claims 1-2 or 4-5, characterized in that: A mounting through hole (43) is provided at the center of the first rotating shaft structure (41), and a mounting threaded hole (53) is provided at the center of the second rotating shaft structure (51). The coaxial stabilization kit structure (6) also includes a tensioning screw structure (64), the tensioning screw structure (64) passes through the mounting through hole (43) and cooperates with the mounting threaded hole (53), and a thrust bearing structure (65) is provided between the nut of the tensioning screw structure (64) and the side wall of the first rotating shaft structure (41).

8. The relative articulated axis of rotation assembly of claim 7, wherein: The first output wheel disc structure (42) and the second output wheel disc structure (52) are gears, sprockets, synchronous pulleys or crankshaft structures.

9. The relative joint rotation axis assembly according to any one of claims 4 to 5 or 8, characterized in that: The first output wheel disc structure (42) and the side surface of the stabilizing sleeve (61) are both fixed to the first rotating shaft structure (41) via a screw structure, and the second output wheel disc structure (52) is mounted on the second rotating shaft structure (51) via a spline structure.

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