CN117842670A - Precession mechanism, pushing device and track width adjusting device - Google Patents

Abstract

The invention discloses a screwing mechanism, a pushing device and a track width adjusting device, wherein the screwing mechanism comprises a first moving body, a second moving body and a pushing component, the second moving body and the first moving body are suitable for relative movement, the pushing component performs spiral friction movement around the first moving body, and the pushing component and the second moving body are suitable for relative rotation and push the second moving body to move along the first moving body. The first moving body and the second moving body can move relatively, namely the second moving body can move on the first moving body or the first moving body can be driven by the second moving body to extend or retract; and stable movement can be realized at a set pitch between the first moving body and the second moving body regardless of whether the first moving body and the second moving body are in a full contact or a partial contact state.

Description

Precession mechanism, pushing device and track width adjusting device

Technical Field

The invention relates to the technical field of feeding sports equipment, in particular to a screw-in mechanism. In addition, the utility model also relates to a pushing device and a track width adjusting device.

Background

Transport systems for transporting objects along a transport section, and transport bodies as part of such transport systems, are known in the prior art.

The transport body is a movable structure arranged on the guide mechanism. In the prior art, it is known that in different types of transport systems for different application scenarios, the individual transport bodies can be fixed to or arranged between a conveyor chain, a conveyor belt, a conveyor rod, a transport system, in order to realize a transport function. However, the space and the place required by the prior transportation main body when the transportation main body moves according to the set track under the guidance of the guide structure are larger; and the carrier may shift when moving; and only the transportation body can move between the guiding structure and the transportation body, the guiding structure is usually fixed, so that when the production line structure needs to be enlarged, most of the guiding structures used previously need to be abandoned, which causes great cost waste.

In view of this, in order to be able to ensure the stability of the moving conveying effect in a limited space, a screw-in mechanism has been devised to solve the above-mentioned problems.

Disclosure of Invention

The present invention aims to solve at least one of the technical problems existing in the prior art.

Therefore, the invention provides the precession mechanism which can reduce the space and the place which are required to be occupied and simultaneously ensure the stability of mobile conveying.

According to the present invention there is provided a precession mechanism comprising:

a first moving body;

a second moving body adapted to move relatively to the first moving body;

the pushing component performs spiral friction motion around the first moving body, and the pushing component and the second moving body are suitable for rotating relatively and pushing the first moving body to move along the first moving body.

The invention has the beneficial effects that the second moving body is arranged on the first moving body, so that the first moving body and the second moving body can move relatively, namely the second moving body can move on the first moving body or the first moving body can be driven by the second moving body to extend or retract; and stable movement can be realized between the first moving body and the second moving body regardless of whether the first moving body and the second moving body are in a full contact or a partial contact state.

Preferably, the pushing assembly and the second moving body are adapted to rotate relative to each other and to be displaced on the first moving body at a set pitch.

Further preferably, the pushing assembly includes a rotating member and a rotating table disposed corresponding to the rotating member, and the rotating member is rotatably connected to the rotating table and is capable of rotating on the rotating table about a first axis.

Preferably, the first axis is disposed opposite to the central axis of the first moving body.

Further preferably, the rotating member is tangential to the first moving body surface to form a line contact when in the full contact.

Preferably, the rotating member abuts against the first moving body surface to form a point contact when the pushing member contacts the first moving body portion.

Further preferably, the rotary table is provided with an inclined step surface having an inclination angle, and the mounting slot hole of the rotary member is formed by extending from the inclined step surface into the rotary table.

Preferably, one end of the rotating member extends out of the rotating connecting portion along an axial direction thereof, and the rotating connecting portion is adapted to be embedded into the mounting slot hole formed in the rotating table until the end of the rotating member abuts against the inclined step surface.

Still preferably, the rotary table is further provided with a pressure adjusting assembly, and the pressure adjusting assembly is adapted to adjust a pressing force generated by the rotary member on the first moving body when the rotary member abuts against the first moving body.

Preferably, the pressure adjusting assembly comprises adjusting slots arranged at two sides of the rotary table, the adjusting slots extend along the radial direction of the first moving body, and adjusting pieces are arranged in the adjusting slots and are suitable for moving along the adjusting slots so as to drive the rotating pieces to be close to or far away from the first moving body.

Further preferably, each of the rotary tables is disposed on a pushing base, and each of the rotary tables is circumferentially arranged along a central axis of the pushing base.

Preferably, each rotary table is arranged in an inclined manner, and the included angles formed between the adjacent rotary tables are equal.

Further preferably, the second moving body further includes a linear conveyor, and the pushing base protrudes toward the linear conveyor to form a rotation connection portion adapted to be embedded in the linear conveyor and rotatable around a central axis of the first moving body in the linear conveyor.

Preferably, the linear conveying body comprises an angular contact bearing and a bearing mounting seat for mounting the angular contact bearing, a clamping groove is formed in the bearing mounting seat, a clamping spring is arranged in the clamping groove, the clamping spring is suitable for limiting the angular contact bearing to axially move after being mounted in the bearing mounting seat, and the rotating connecting part can be embedded into the angular contact bearing and rotates along with the angular contact bearing.

Further preferably, the linear conveying body comprises a linear bearing, the linear bearing is sleeved on the first moving body and connected with the bearing mounting seat, and the linear bearing is suitable for driving the linear conveying body to move linearly.

The invention also provides a pushing device, which comprises:

a first moving body;

a second moving body adapted to move relatively to the first moving body,

a pushing component which makes spiral friction motion around the first moving body, and the pushing component and the second moving body are suitable for relative rotation and pushing the first moving body to move;

a driving device for providing a driving force to the pushing assembly;

the pushing assembly is suitable for pushing the first moving body to axially displace, and the first moving body is further provided with a pushing structure which is suitable for synchronously moving along with the first moving body and pushing materials.

Preferably, the driving device includes:

a power device for providing a power output;

the rotary driver is simultaneously connected with the output shaft of the power device and the second moving body, and is used for receiving the power transmitted by the power device and driving the second moving body to move;

and a power transmitter connected to the rotary driver for transmitting power between the power device and the second moving body.

Further preferably, the rotary driver includes a first driving member connected to the output shaft of the power unit, and a second driving member connected to the rotary body, and the power transmitter is drivingly connected to the first driving member and the second driving member.

The invention also provides a track width adjusting device, which comprises:

a first moving body;

the second moving body is provided with a second moving body,

the second moving body and the first moving body are adapted to move relatively,

a pushing component which makes spiral friction motion around the first moving body, and the pushing component and the second moving body are suitable for relative rotation and pushing the first moving body to move;

a driving device for providing a driving force to the pushing assembly;

one end of the first movable main body is connected with a movable rail, a fixed rail is arranged on one side of the first movable main body opposite to the movable rail, the second movable main body is arranged on the fixed rail, and the pushing component is suitable for expanding the distance between the fixed rail and the movable rail when pushing the first movable main body to extend;

the pushing component is suitable for reducing the distance between the fixed track and the movable track when pushing the first moving body to retract.

Preferably, the driving device includes:

a power device for providing a power output;

the rotary driver is simultaneously connected with the output shaft of the power device and the second moving body, and is used for receiving the power transmitted by the power device and driving the second moving body to move;

and a power transmitter connected to the rotary driver for transmitting power between the power device and the second moving body.

Further preferably, the rotary driver includes a first driving member connected to the output shaft of the power unit, and a second driving member connected to the rotary body, and the power transmitter is drivingly connected to the first driving member and the second driving member.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

In order to make the above objects, features and advantages of the present invention more comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

The invention will be further described with reference to the drawings and examples.

FIG. 1 is an exploded view of a three-dimensional structure of a precession mechanism of the present invention;

FIG. 2 is an assembly view of the precession structure of the present invention;

FIG. 3 is a cross-sectional view of the precession mechanism of the present invention;

FIG. 4 is a perspective view of the push assembly of the precession mechanism of the present invention;

FIG. 5 is a cross-sectional view of the push assembly of the precession mechanism of the present invention;

FIG. 6 is an exploded view of the precession mechanism of the present invention with the addition of a drive mechanism;

FIG. 7 is an assembly view of the precession mechanism of the present invention with the addition of a drive means;

FIG. 8 is a side view of the precession mechanism of the present invention with the addition of a drive means;

FIG. 9 is a schematic diagram of a pusher according to the present invention;

fig. 10 is a schematic view of the track width adjusting device of the present invention.

Reference numerals:

1. a first moving body;

2. a second moving body;

3. a pushing assembly;

31. a rotating member; 311. A rotary connection part;

32. a rotary table; 321. Inclined step surfaces; 322. A mounting slot;

33. a pressure regulating assembly; 331. Adjusting the slotted hole; 332. An adjusting member;

34. pushing the base; 341. A rotary connection part;

35. a linear conveyance body; 351. a linear bearing; 352. angular contact bearings; 353. a bearing mounting seat; 354. clamping springs; 355.

4. a driving device; 41. a power device; 42. a power transmission; 43. a rotary driver; 431. a first driving member; 432. a second driving member;

5. a pushing rod; 6. a pushing structure; 7. a track gap; 8. a movable rail; 9. and fixing the track.

Detailed Description

The invention will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic representations which merely illustrate the basic structure of the invention and therefore show only the structures which are relevant to the invention.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "top", "bottom", etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element in question must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, features defining "first", "second" may include one or more such features, either explicitly or implicitly. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.

Referring to fig. 1 to 3, a screw-in mechanism according to an embodiment of the present invention employs a combination of a first moving body 1 and a second moving body 2, wherein the second moving body 2 is capable of moving relative to the first moving body 1, that is, the second moving body 2 is capable of moving on the first moving body 1 after the first moving body 1 is fixed; when the second moving body 2 is fixed, the first moving body 1 can also move relative to the second moving body 2.

In this embodiment, the second moving body 2 moves on the first moving body 1 to have at least one moving path, and the moving path may be a straight line moving along the first moving body 1 or a curved line moving along the first moving body 1. And the second moving body 2 includes at least one pushing member 3 that can be in full contact or partial contact with the first moving body 1, and the pushing member 3 can generate friction with the first moving body 1 to thereby perform displacement along the moving path of the first moving body 1 regardless of the full contact or the partial contact.

In addition, the movement between the pushing component 3 and the first moving body 1 first requires a set friction force between the pushing component 3 and the first moving body 1, the friction force is related to the stability of the pushing component 3 and the first moving body 1 in the movement process, if the friction force is too large, the movement between the pushing component 3 and the first moving body 1 is difficult, if the friction force is too small, the pushing component 3 and the first moving body 1 can generate idle rotation in the contact movement process, and further the pushing component 3 cannot smoothly move along the movement path of the first moving body 1, therefore, at least the friction force between the pushing component 3 and the first moving body 1 needs to be set to be 1N, so as to ensure the stable movement of the pushing component 3 on the first moving body 1.

The movement of the pushing assembly 3 on the first moving body 1 under the set friction force generates relative rotation between the pushing assembly 3 and the first moving body 1 so as to convert the rotation motion of the pushing assembly 3 into linear motion, thereby realizing the displacement of the pushing assembly 3 on the first moving body 1.

The pushing assembly 3 includes a rotating member 31 and a rotating table 32 provided in correspondence with the rotating member 31, the rotating member 31 is rotatably connected to the rotating table 32, and the rotating member 31 is capable of rotating on the rotating table 32 about a first axis. The first axis is a central axis of the rotating member 31, and the first axis of the rotating member 31 disposed on the rotating table 32 is disposed on a different plane from the central axis of the first moving body 1, that is, the first axis intersects with the central axis of the first moving body 1 when being in the same plane, and intersects with the plane of the central axis of the first moving body 1 when being in different planes. Therefore, under the set friction force, friction force which is not parallel to the central axis direction of the first moving body 1 can be generated between the rotating member 31 and the first moving body 1 when the rotating member 31 rotates, and the rotating member 31 can drive the second moving body 2 to linearly move on the first moving body 1 along the moving path at the set pitch when rotating.

The pitch setting of the rotating member 31 on the first moving body 1 is mainly determined according to the inclination angle between the rotating member 31 and the first moving body 1, that is, the angle between the first axis and the central axis of the first moving body 1, in principle, only when the inclination angle between the rotating member 31 and the first moving body 1 is controlled to be 1 ° to 89 °, the rotation of the rotating member 31 can make the rotating member 31 perform the linear motion on the first moving body 1.

Among them, the inclination angle between the rotary member 31 and the first moving body 1 is preferably set to 30 ° to 60 °.

Since there are two contact modes of full contact and partial contact between the rotating member 31 and the guide member, the possible effects of the contact modes on the movement between the rotating member 31 and the guide member will be described in detail below.

When the rotating member 31 is in full contact with the guiding member, the contact surface of the rotating member 31 and the first moving body 1 is tangential to the outer surface of the first moving body 1, and at this time, the outer surface of the rotating member 31 is in full contact with the outer surface of the first moving body 1, so that the rotating member 31 and the first moving body 1 form a line contact, in this state, the acting surface formed between the rotating member 31 and the first moving body 1 during rotation is the largest, and therefore, the overall structural state of the rotating member 31 during rotation movement on the first moving body 1 is more stable.

When the rotating member 31 is partially contacted with the first moving body 1, the rotating member 31 is in point contact or partial line contact with the first moving body 1, that is, in this state, only a point or partial contact surface of the rotating member 31 is contacted with the outer surface of the first moving body 1, and during rotation, the rotating member 31 presses the outer surface of the first moving body 1 through the point or partial contact surface contacted with the first moving body 1, so that friction is generated between the rotating member 31 and the first moving body 1 during rotation, and the rotating member 31 moves along the moving path of the first moving body 1. However, since the contact between the rotating element 31 and the first moving body 1 is a point or a partial contact surface, when the rotating element 31 presses the first moving body 1 with a set friction force, the pressure applied to the first moving body 1 per unit area is large, and the abrasion speed of the outer surface of the first moving body 1 may be increased.

Referring to fig. 4 to 5, when the rotating member 31 is mounted on the rotating table 32, since the rotating member 31 is inclined, an inclined stepped surface 321 having an inclination angle, that is, an inclination angle between the rotating member 31 and the first moving body 1 is formed on the rotating table 32. And the middle part of the inclined step surface 321 extends linearly along the inside of the rotary table 32 to form a mounting slot 322, one end of the rotary member 31 extends axially to form a rotary connecting portion 311, and the rotary connecting portion 311 is adapted to be embedded into the mounting slot 322 formed on the rotary table 32, so as to complete connection and fixation between the rotary member 31 and the rotary table 32.

The rotary connecting portion 311 of the rotating member 31 is embedded into the mounting slot 322, and the hole depth of the mounting slot 322 needs to be set to exceed the length of the rotary connecting portion 311, so that the rotary connecting portion 311 can be completely embedded into the mounting slot 322 of the rotating table 32 until the end portion of the rotating member 31 can be abutted against the inclined step surface 321 of the rotating table 32, so that a gap between the rotary connecting portion 311 and the mounting slot 322 is smaller, and foreign matters such as dust and the like outside are prevented from being adsorbed in the gap between the rotary connecting portion 311 and the mounting slot 322, thereby causing abrasion to the surface of the first moving body 1 in the moving process.

Referring to fig. 4, the pressure between the rotating member 31 and the first moving body 1 is controlled by a pressure adjusting assembly 33, the pressure adjusting assembly 33 is disposed on the rotating table 32, the pressure adjusting assembly 33 includes adjusting slots 331 disposed on two sides of the rotating table 32, the adjusting slots 331 extend along a radial direction of the first moving body 1, and adjusting members 332 are disposed in the adjusting slots 331, the adjusting members 332 may be pin shafts, and when the pressure between the rotating member 31 and the first moving body 1 needs to be increased, the adjusting members 332 are pressed downward toward the first moving body 1, and the rotating member 31 is driven to move toward the first moving body 1, so as to increase the pressure between the rotating member 31 and the first moving body 1. When the pressure between the rotating member 31 and the first moving body 1 needs to be reduced, the adjusting member 332 is lifted in a direction away from the first moving body 1, so that the rotating member 31 is away from the first moving body 1, but the outer surface of the rotating member 31 is still in contact with the rod surface of the first moving body 1, and the rotating member 31 and the rod surface are not separated, so that the downward pressure generated by the rotating member 31 on the first moving body 1 is only reduced.

Referring to fig. 1 to 2 and 8, a plurality of rotary tables 32 are disposed on the pushing base 34, and each rotary table 32 is circumferentially arranged along a central axis of the pushing base 34. I.e. the central axis of the pushing base 34 is collinear with the central axis of the first mobile body 1. Each rotary table 32 provided on the pushing base 34 is inclined, the inclination angle of the rotary table 32 is identical to the inclination angle of the rotary member 31, and the included angle formed between the adjacent rotary tables 32 is equal. For example, in fig. 2 or 3, three rotary tables 32 are provided on the pushing base 34, and an angle formed by extension lines of two adjacent rotary tables 32 in the three rotary tables 32 is 60 °. The inclination angles of the rotating tables 32 are set to be equal to each other in this case, and the inclination angles of the rotating members 31 are set to be equal to the inclination angles of the rotating tables 32, so that the angles formed by the adjacent rotating tables 32 may be different from each other, but the angles formed by the rotating members 31 provided on the adjacent rotating tables 32 are required to be kept equal to each other.

Referring to fig. 1 to 3, the second moving body 2 further includes a linear conveyor 35, and the pushing base 34 is connected to the linear conveyor 35 with a detachable connection structure therebetween. Specifically, the pushing base 34 is projected toward the linear transport body 35 to form a rotation connection portion 341, the rotation connection portion 341 is adapted to be fitted into the linear transport body 35, and the rotation connection portion 341 fitted into the linear transport body 35 is also rotated about the central axis of the first moving body 1. Of course, the pushing base 34 and the linear conveying body 35 may be integrally formed by machining, specifically, the pushing base 34 and the rotation connecting portion 341 thereof are directly integrally formed with the linear conveying body 35, so as to ensure the coaxiality between the rotation connecting portion 341 of the pushing base 34 and the first moving body 1 after being connected with the linear conveying body 35.

The linear conveying body 35 comprises a linear bearing 351, an angular contact bearing 352 and a bearing mounting seat 353, wherein the linear bearing 351 is connected with the bearing mounting seat 353 and is arranged at the end part of the bearing mounting seat 353, the angular contact bearing 352 is arranged in the bearing mounting seat 353 and is rotationally connected with the rotary connecting part 341, a clamping groove 355 is formed in the bearing mounting seat 353, after the angular contact bearing 352 is mounted in the bearing mounting seat 353, a clamping spring 354 is arranged in the clamping groove 355, the angular contact bearing 352 can be limited to be axially displaced and slide out from the bearing mounting seat 353 after being mounted in the bearing mounting seat 353 through the clamping spring 354, and the linear conveying body 35 can do linear motion when the rotary part 31 is guaranteed to do rotary motion through the arrangement of the linear bearing 351, and meanwhile the straightness of the second moving body 2 in the moving process is guaranteed. In addition, by the provision of the angular contact bearing 352, it is ensured that the angular contact bearing 352 can absorb an axial force generated during the rotational movement of the rotary member 31, thereby ensuring smooth movement of the second moving body 2.

The precession mechanism according to the embodiment of the present invention further comprises a driving device 4, the driving device 4 being capable of providing a driving force for the second mobile body 2. Specifically, the driving device 4 may use a motor, or the like to drive the second moving body 2 to move on the first moving body 1 by using the power driving device 4.

Referring to fig. 6 to 7, the driving device 4 includes a power device 41, a power transmitter 42, and a rotation driver 43, the power device 41 is used for providing power output, the rotation driver 43 can receive the power transmitted by the power transmitter 42 and drive the second moving body 2 to move, the power transmitter 42 can be a transmission belt to transmit the power output by the power device 41 to the rotation driver 43, and the speed of the power output of the power device 41 is related to the moving speed of the rotating body 2 on the first moving body 1, so the moving rhythm of the rotating body 2 on the first moving body 1 can be correspondingly adjusted by adjusting the power output rhythm of the power device 41.

The rotary driver 43 includes a first driving member 431 and a second driving member 432, the first driving member 431 is connected with an output shaft of the power device 41, the second driving member 432 is connected with the rotary body, the power transmitter 42 is in transmission connection with the first driving member 431 and the second driving member 432, so that driving force generated by synchronously rotating the first driving member 431 driven by the power device 41 can be transmitted to the second driving member 432 through the power transmitter 42, and the second driving member 432 drives the pushing assembly 3 to rotate, so as to drive the second movable body 2 to linearly move on the first movable body 1.

Wherein the diameter of the first driving member 431 is smaller than the diameter of the second driving member 432. Therefore, when the power device 41 drives the first driving member 431 to rotate, the rotation speed ratio between the first driving member 431 and the second driving member 432 is different due to the difference in diameter between the two, so that the movement of the second moving body 2 on the first moving body 1 can be controlled more easily.

In addition, when the second moving body 2 moves on the first moving body 1, it is necessary to control both ends of the first moving body 1 to restrict the first moving body 1 from moving in the axial direction thereof, and only the second moving body 2 moves on the first moving body 1.

Referring to fig. 9, in a pushing device according to the embodiment of the present invention, the precession mechanism according to any of the above embodiments of the present invention is used, when the driving device 4 and the second moving body 2 are controlled not to move linearly on the first moving body 1, that is, the driving device 4 moves the second moving body 2 and is fixed, but the first moving body 1 is not limited, and at this time, the first moving body 1 is driven by the rotational friction force generated by the second moving body 2 to move the first moving body 1 along the axial direction thereof. For example, when the pushing operation is performed, the first moving body 1 is replaced by the second moving body 2 and the driving device 4, and the pushing rod 5 is driven to move along the axial direction of the first moving body 2 and the driving device 4 at the same time, and in the moving process, the pushing structure 6 arranged on the pushing rod 5 can synchronously move along with the pushing rod 5, so that the pushing of the pushing structure 6 to materials is realized. In addition, the amount of thrust of the thrust rod 5 can be adjusted by adjusting the frictional force generated between the thrust rod 5 and the second moving body 2. Specifically, when the pushing force needs to be increased, the friction force between the pushing bar 5 and the second moving body 2 can be increased, whereas when the pushing force needs to be reduced, the friction force between the pushing bar 5 and the second moving body 2 can be reduced.

Referring to fig. 10, a track width adjusting device according to an embodiment of the present invention employs a precession mechanism according to any of the above embodiments of the present invention, and the second moving body 2 is capable of moving on the first moving body 1 while the driving device 4 drives the second moving body 2 to rotate to drive the first moving body 1 to extend or retract in the direction of the central axis thereof via the second moving body 2. The operation mode can be applied to track width adjustment, lifting platforms and the like. Specifically, the operation mode of the lifting platform is described herein by way of example, when lifting operation is required, the second moving body 2 may be replaced with a lifting table, and the lifting table may be moved on the first moving body, so as to implement lifting operation, and when the required lifting height is required to be further raised, the lifting table may be used to drive the first moving body to lift, and when the first moving body lifts, the lifting table may be made to lift on the first moving body by controlling the friction between the lifting table and the first moving body, so as to implement lifting or lowering operation of the lifting platform. In addition, the precession mechanism can also perform track width adjustment operation, when the track width adjustment is required, the first moving body 2 is only required to drive the first moving body 1 to extend or retract, and meanwhile, the fixed track 9 close to one side of the second moving body 2 is kept unchanged, the first moving body 1 extends and simultaneously drives the movable track 8 to synchronously extend, so that the expansion of the track gap 7 between the fixed track 9 and the movable track 8 can be realized when the first moving body 1 extends, and further the track width adjustment is realized; and when the first movable main body 1 is retracted, the movable rail 8 can be driven to retract synchronously, so that the reduction of the rail gap 7 between the fixed rail 9 and the movable rail 8 is realized, and the rail is narrowed.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," 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, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. 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-described preferred embodiments according to the present invention are intended to suggest that, from the above description, various changes and modifications can be made by the worker in question without departing from the technical spirit of the present invention. The technical scope of the present invention is not limited to the description, but must be determined as the scope of the claims.

Claims (20)

1. A precession mechanism, comprising:

a first moving body (1);

-a second mobile body (2), said second mobile body (2) being adapted to move relative to said first mobile body (1);

the pushing component (3) is in spiral friction motion around the first moving body (1), and the pushing component (3) and the second moving body (2) are suitable for relative rotation and pushing the second moving body (1) to move along the first moving body (1).

2. The precession mechanism according to claim 1, wherein the pushing assembly (3) comprises a rotating member (211) and a rotating table (32) arranged in correspondence of the rotating member (31), the rotating member (31) being rotatably connected to the rotating table (32) and being capable of autorotation on the rotating table (32) about a first axis.

3. Screw-in mechanism according to claim 2, characterized in that the first axis is arranged out of plane with the central axis of the first mobile body (1).

4. A precession mechanism according to claim 2, wherein the rotating member (31) is tangential to the first moving body (1) surface to form a line contact.

5. A screw-in mechanism according to claim 2, characterized in that the rotating member (31) abuts against the surface of the first moving body (1) to form a point contact when the pushing assembly (3) contacts the first moving body (1) part.

6. The precession mechanism according to claim 2, wherein the rotary table (32) is provided with an inclined stepped surface (321) having an inclined angle, and a mounting slot (322) is formed from the inclined stepped surface (321) surface into the rotary table (32) to form the rotary member (31).

7. The screw-in mechanism according to claim 6, characterized in that one end of the rotating member (31) extends in its axial direction by a rotating connection portion (311), said rotating connection portion (311) being adapted to be inserted into the mounting slot (322) provided on the rotary table (32) until the end of the rotating member (31) abuts against the inclined step surface (321).

8. Screw-in mechanism according to claim 2, characterized in that the rotation table (32) is further provided with a pressure regulating assembly (33), the pressure regulating assembly (33) being adapted to regulate the downward pressure of the rotation member (31) on the first mobile body (1) when the rotation member (31) abuts against the first mobile body (1).

9. Screw-in mechanism according to claim 8, characterized in that the pressure regulating assembly (33) comprises regulating slots (331) arranged on both sides of the rotary table (32), the regulating slots (331) extending radially of the first moving body (1), and regulating members (332) being arranged in the regulating slots (331), the regulating members (332) being adapted to move along the regulating slots (331) to bring the rotary member (31) closer to or farther from the first moving body (1).

10. The precession mechanism of claim 2, wherein each of the rotational stages (32) is disposed on a thrust base (34), and wherein each of the rotational stages (32) is circumferentially arranged along a central axis of the thrust base (34).

11. The precession mechanism of claim 10, wherein each of the rotational stages (32) is disposed at an angle such that an included angle formed between adjacent rotational stages (32) is equal.

12. The precession mechanism according to claim 10, wherein the second mobile body (2) further comprises a linear conveyor body (35), the pushing base (34) protruding towards the linear conveyor body (35) to form a rotational connection (341), the rotational connection (341) being adapted to be embedded in the linear conveyor body (35) and rotatable within the linear conveyor body (35) about the central axis of the first mobile body (1).

13. The precession mechanism of claim 12, wherein the linear transporter (35) includes an angular contact bearing (352), and a bearing mount (353) for mounting the angular contact bearing (352), a clamping groove (355) is formed in the bearing mount (353), a clamp spring (354) is formed in the clamping groove (355), the clamp spring (354) is adapted to limit axial movement of the angular contact bearing (352) after the angular contact bearing (352) is mounted in the bearing mount (353), and the rotational connection (341) is capable of being embedded in the angular contact bearing (352) and rotated therewith.

14. The precession mechanism of claim 13, wherein the linear transporter (35) comprises a linear bearing (351), the linear bearing (351) being sleeved on the first moving body (1) and connected to the bearing mount (353), the linear bearing (351) being adapted to drive the linear transporter (35) to move linearly.

15. A pushing device employing the precession mechanism of any of claims 1 to 14, comprising:

a first moving body (1);

a second mobile body (2), said second mobile body (2) being suitable for relative movement with said first mobile body (1),

-a pushing assembly (3), the pushing assembly (3) performing a helical friction movement around the first mobile body (1), and the pushing assembly (3) and the second mobile body (2) being adapted to rotate relatively and to push the first mobile body (1) to move;

-a driving device (4), the driving device (4) being adapted to provide a driving force for the pushing assembly (3);

the pushing assembly (3) is suitable for pushing the first moving body (1) to axially displace along the first moving body, the first moving body (1) is further provided with a pushing structure (6), and the pushing structure (6) is suitable for synchronously moving along with the first moving body (1) and pushing materials.

16. Pushing device according to claim 15, wherein the driving means (4) comprises:

a power unit (41) for providing a power output;

a rotary driver (43) connected with the output shaft of the power device (41) and the second moving body (2) at the same time, for receiving the power transmitted by the power device (41) and driving the second moving body (2) to move;

and a power transmitter (42) connected to the rotary driver (43) for transmitting power between the power device (41) and the second moving body (2).

17. The pushing device according to claim 16, wherein the rotary drive (43) comprises a first drive member (431) and a second drive member (432), the first drive member (431) being connected to the output shaft of the power means (41), the second drive member (432) being connected to the rotary body, the power transmitter (42) being drivingly connected to the first drive member (431) and the second drive member (432).

18. A track width adjustment device employing the precession mechanism of any one of claims 1 to 14, comprising:

a first moving body (1);

a second movable body (2),

the second moving body (2) and the first moving body (1) are suitable for relative movement,

-a pushing assembly (3), the pushing assembly (3) performing a helical friction movement around the first mobile body (1), and the pushing assembly (3) and the second mobile body (2) being adapted to rotate relatively and to push the first mobile body (1) to move;

-a driving device (4), the driving device (4) being adapted to provide a driving force for the pushing assembly (3);

one end of the first movable main body (1) is connected with a movable rail (8), a fixed rail (9) is arranged on one side of the movable rail (8), the second movable main body (2) is arranged on the fixed rail (9), and the pushing component (3) is suitable for expanding the distance between the fixed rail (9) and the movable rail (8) when pushing the first movable main body (1) to extend out;

the pushing assembly (3) is suitable for reducing the distance between the fixed rail (9) and the movable rail (8) when the first moving body (1) is pushed to retract.

19. The track-widening device according to claim 18, characterized in that the driving device (4) comprises:

a power unit (41) for providing a power output;

a rotary driver (43) connected with the output shaft of the power device (41) and the second moving body (2) at the same time, for receiving the power transmitted by the power device (41) and driving the second moving body (2) to move;

and a power transmitter (42) connected to the rotary driver (43) for transmitting power between the power device (41) and the second moving body (2).

20. The track width adjustment device according to claim 19, characterized in that the rotary drive (43) comprises a first drive member (431) and a second drive member (432), the first drive member (431) being connected to the output shaft of the power means (41), the second drive member (432) being connected to the rotary body, the power transmitter (42) being drivingly connected to the first drive member (431) and the second drive member (432).