WO2014071667A1

WO2014071667A1 - Drive wheel, match wheel, secondary wheel, self-adjustment friction wheel and roller device

Info

Publication number: WO2014071667A1
Application number: PCT/CN2012/086136
Authority: WO
Inventors: 王志标
Original assignee: 中联重科股份有限公司
Priority date: 2012-11-08
Filing date: 2012-12-07
Publication date: 2014-05-15
Also published as: CN102943862A; CN102943862B

Abstract

A drive wheel, comprising a drive wheel body; the peripheral surface of the drive wheel body comprises a drive wheel rotation matching an outer curved surface, and a drive wheel peripheral drive-torsional plane (14a); each drive wheel rotation matching the outer curved surface is a part of a corresponding curved surface formed by the rotation of respective curved formation line around a first rotation axis (Y); and each drive wheel peripheral drive-torsional plane (14a) is a part of a corresponding plane formed by the rotation of respective straight formation line around the first rotation axis (Y). Moreover, also provided are a match wheel, secondary wheel, assembled self-adjustment friction wheel, and roller device. The present invention is a break-through of the conventional single drive wheel structure, ensures reliable transfer of torque by the assembled drive wheel assembly through mutual matching of two or more wheels, and realizes position adjustment during driving via the rotation of the mutually-matched wheels at other degrees of freedom without affecting the torque driving, thus improving torque transfer efficiency.

Description

Transmission wheel, mating wheel, secondary wheel, self-adjusting friction wheel and roller equipment

The present invention relates to a transmission member, and in particular to a transmission wheel. Further, the present invention relates to a mating wheel and a secondary wheel that cooperate with the transmission wheel. As a typical application of the various wheel members of the present invention, the present invention also relates to an automatic adjustment type friction wheel assembled by various wheel members. Furthermore, the invention relates to a roller apparatus comprising a drum. Background technique

A transmission wheel for transmitting torque is a transmission member widely used in various mechanical devices. Typically, for example, an outer peripheral surface of an active transmission wheel for connecting a drive shaft is a friction surface, and the driving transmission wheel is driven by a friction surface thereof. a roller that is in contact with the friction surface (ie, driven member); for example, the driving gear for connecting the driving shaft is a driving gear, and the driving gear is used to drive a driven gear (ie, a driven member) that meshes with the driving gear; The driving wheel for connecting the driving shaft is a driving pulley for driving a driving belt (ie, a driven member) engaged with the driving pulley.

In order to reliably transmit the torque of the drive shaft, the connection between the transmission wheel and the drive shaft is rigidly connected (for example, by a keyed keyway connection, a spline connection, etc.), that is, the prior art transmission wheel is a single piece, Mounting on the drive shaft does not change position, and the drive shaft transmits torque to the drive wheel, which in turn transmits torque to the driven member, thus completing the torque transfer function. However, such a transmission wheel that relies on a single piece has serious technical drawbacks. For example, in the case of the above-mentioned transmission wheel as the active friction wheel, the surface of the drum as the driven member is subjected to heat deformation, wear, installation error, and the like. However, when the friction surface of the transmission wheel cannot form a satisfactory friction surface contact, since the prior art transmission wheel cannot adjust the position adaptively during the operation, the transmission efficiency may be low, or even The drive is invalid. For example, in the above-described transmission wheel as the driving gear, when the driven gear as the driven member is not in position due to the mounting error, the tooth surface wear, or the driven gear movement is not in place, the existing existing The drive wheel in the form of a technical drive gear also cannot adjust the position adaptively, so that transmission problems can also occur.

In order to assist those skilled in the art to understand the above-mentioned drawbacks of the prior art transmission wheel, the following description will be made with reference to Fig. 1 taking the driving of the drying drum of a drying apparatus employed in the prior art asphalt processing station as an example. The drying apparatus includes a drying drum, and the rotation of the drying drum is driven by a transmission wheel in the form of a friction wheel.

As shown in FIG. 1 , the transmission structure of the drying drum mainly comprises a bearing seat 1 , a transmission wheel 2 in the form of a friction wheel 2 , a drive shaft 3 , a aligning bearing 4 , etc., the drive shaft 3 inputs a torque, and the drive shaft 3 is fixedly mounted with friction. Round form The movable wheel 2, the outer peripheral surface of the transmission wheel 2 is formed as a friction surface which is in contact with the outer peripheral surface of the dry rolling, so that the transmission wheel 2 can drive the drying drum to rotate by friction. However, in the transmission structure of the drying drum, the drying drum is directly driven by the transmission wheel in the form of a friction wheel, and the position of the transmission wheel 2 in the form of a friction wheel is fixed, so that the adjustment of the drying drum is very complicated and requires precise drying. The relative position of the drum and the drive wheel 2 is such that an effective transmission fit relationship can be formed. Moreover, during the operation of the drying equipment, the drying drum inevitably has manufacturing, installation and other errors or deformation due to friction, heat, etc. during operation, causing the outer circumferential surface of the transmission wheel 2 and the drying drum to become in line contact by theoretical contact. Even point contact, resulting in serious local wear and increased noise, and even unable to complete the transmission function.

As can be seen from the above description, the prior art transmission wheel is a single piece that is fixedly mounted on the drive shaft to perform a torque transfer function that cannot be adjusted during the transmission operation to better perform the transmission function. Such technical deficiencies are widespread in the prior art, and those skilled in the art are limited to the conventional bias of the transmission wheel that must be fixedly mounted to the drive shaft due to the need to reliably transmit torque, without regard to other possibilities, resulting in the above technical problems. It has existed for a long time and cannot be alleviated or solved relatively effectively.

In view of the above-mentioned drawbacks of the prior art, it is desirable to design a novel transmission wheel and its assembly structure to be able to relatively effectively solve or alleviate the above-mentioned drawbacks of the prior art. Summary of the invention

The technical problem to be solved by the present invention is to provide a transmission wheel that can be assembled with a corresponding mating wheel as a transmission wheel assembly, so that the transmission wheel assembly can be used for reliably transmitting torque and ensuring two wheels that are assembled to each other. One of the pieces has a degree of freedom of rotation in one direction.

On the basis of this, the technical problem to be solved by the present invention is to provide a mating wheel which can be assembled with a corresponding transmission wheel as a transmission wheel assembly for reliably transmitting torque, and can ensure any two of the mating relationships. One of the wheel members has a degree of freedom of rotation in one direction.

Further, the technical problem to be solved by the present invention is to provide a secondary wheel that can be used for assembling a gear wheel assembly with a corresponding mating wheel for reliably transmitting torque and ensuring a mating relationship. One of the two wheel members has a degree of freedom of rotation in one direction.

Another technical problem to be solved by the present invention is to provide an automatic adjustment type friction wheel which can be used for reliably transmitting torque and can ensure three interlocking relationships in the self-adjusting friction wheel. Two of the wheel members each have a rotational freedom in one direction such that the self-adjusting friction wheel as a whole has two rotational degrees of freedom. Further, another technical problem to be solved by the present invention is to provide a drum apparatus in which an automatic adjustment type friction wheel for driving a drum can be used for reliably transmitting torque, and can secure the self-adjusting friction wheel Two of the three wheel members having the mating relationship in sequence each have a rotational freedom in one direction, so that the self-adjusting friction wheel as a whole has two rotational degrees of freedom.

In order to solve the above technical problem, the present invention provides a transmission wheel including a transmission wheel wheel body, wherein an outer circumferential surface of the transmission wheel wheel body includes a circumferentially arranged transmission wheel rotating engagement outer curved surface and a transmission wheel outer circumferential transmission twist plane The number of the outer circumferential torsion planes of the transmission wheel is one or two or more in the same plane or parallel to each other, and each of the transmission wheel rotation fit outer curved surfaces respectively rotates around the outer circumference of the transmission wheel A portion of the corresponding curved surface formed by the rotation of the first vertical axis of the plane perpendicular to each other, and the peripheral torsion plane of each of the transmission wheels is a portion of a corresponding plane formed by the rotation of the respective forming line about the first axis of rotation.

Preferably, the first rotation axis extends through the transmission wheel body, and two intersection points of the first rotation axis and the outer circumferential surface of the transmission wheel body are the first rotation axis and the corresponding The transmission wheel is rotated to cooperate with the intersection point of the outer curved surface; the outer circumferential surface of the transmission wheel wheel body is respectively formed with a transmission wheel rotation limit step surface in a region intersecting the first rotation axis, and each of the transmission wheel rotation limit The step surface is not parallel to the outer circumferential twisting plane of the transmission wheel.

More preferably, each of the transmission wheel rotation limit step faces is perpendicular to the outer circumferential transmission torsion plane of the transmission wheel as a more specific preferred form, and the forming curve and the forming straight line of the outer circumferential surface of the transmission wheel wheel body a first elliptical arc, a first circular arc, a first straight line, a second elliptical arc, a second circular arc, and a second straight line that are sequentially connected as a closed loop and are in the same plane; the first ellipse The arc, the first arc line, the second elliptical arc, and the second arc line are concentric, and the first elliptical arc and the second elliptical arc are respectively a quarter elliptical arc, the first The circular arc line and the second circular arc line are respectively a quarter arc line and have the same radius; the first rotation axis is perpendicular to the first straight line and the second straight line, and passes through the first circular arc line And a center of the second circular arc line, such that the first elliptical surface formed by the first elliptical arc and the first circular arc respectively rotating around the first rotational axis and the first outer circumference of the transmission wheel The connecting portion between the spherical portions forms one of the transmission wheels Rotating the limiting step surface, the second elliptical arc and the second circular arc are respectively rotated around the first rotation axis to form a second external ellipsoidal surface of the transmission wheel and the second outer spherical surface of the transmission wheel The connecting portion is formed with another driving wheel rotation limit step surface.

As an optional preferred form, the forming curve and the forming straight line of the outer peripheral surface of the driving wheel wheel body include a first parabolic segment, a first circular arc line, and a first connecting line that are sequentially connected as a closed ring and in the same plane. a straight line, a second parabolic segment, a second circular arc line, and a second straight line; the first circular arc line and the second circular arc line are concentric and opposite to the circle The heart is symmetrical, and is respectively a quarter arc line; the first parabola segment and the second parabola segment are symmetrical with respect to a center of the first circular arc line and the second circular arc line; and the first straight a line and a second line extending in a radial direction of the first circular line and the second circular line; the first axis of rotation being perpendicular to the first line and the second line, and passing through the first circle a center of the arc and the second circular arc, such that the first parabolic curved portion formed by the first parabolic segment and the first circular arc respectively rotates around the first rotational axis and the first outer circumference of the transmission wheel a connecting portion between the spherical surface portions is formed with a driving wheel rotation limiting step surface, and the second parabolic segment and the second circular arc line respectively rotate around the first rotation axis to form a second parabolic curved surface of the transmission wheel The connecting portion between the portion and the second outer spherical surface of the transmission wheel is formed with another rotation of the transmission wheel to limit the step surface.

Based on the above technical solution of the transmission wheel, the present invention provides a mating wheel for cooperating with the transmission wheel according to the above, the mating wheel comprises a hollow mating wheel body, wherein the mating wheel body The inner peripheral surface includes a circumferentially disposed mating wheel rotatably engaging the inner curved surface and the mating wheel inner peripheral twisting plane, the mating wheel body can be used to assemble the drive wheel body, and the mating wheel is rotationally fitted The curved surface and the inner circumferential transmitting and twisting plane of the engaging wheel are respectively matched with the rotating surface of the driving wheel and the outer curved surface of the driving wheel to cooperate with each other, so that the matching wheel can be opposite to the first rotating axis by mutual cooperation The drive wheel rotates.

Alternatively, a drive structure for driving the driven member is formed on the outer peripheral surface of the mating wheel. Specifically, the outer circumferential surface of the mating wheel is formed as a friction surface as the driving structure.

Preferably, the outer peripheral surface of the mating wheel body comprises a circumferentially arranged mating wheel and a mating outer curved surface and a mating wheel outer peripheral twisting plane, wherein the number of outer peripheral twisting planes of the mating wheel is one or in the same plane or Two or more parallel to each other, and an outer angle between the outer peripheral twisting plane of the mating wheel and the inner peripheral twisting plane of the mating wheel, and each of the mating wheel rotating and outer curved surfaces respectively form a respective forming curve a part of a corresponding curved surface formed by the rotation of the second rotary axis perpendicular to the outer peripheral torsion plane of the wheel, and the outer peripheral twisting plane of each of the mating wheels is a corresponding plane formed by the rotation of the respective forming straight line about the second rotary axis a part of.

Further preferably, the outer circumferential torsion plane of the mating wheel and the inner circumferential torsion plane of the mating wheel are perpendicular to each other. Preferably, the mating wheel includes a first mating wheel member and a second mating wheel member that are detachably coupled to each other along a thickness direction of the mating wheel.

The present invention further provides a secondary wheel for mating with a corresponding mating wheel, the secondary wheel comprising a hollow secondary wheel body, wherein An inner peripheral surface of the secondary wheel body includes a circumferentially disposed secondary wheel swivel-fit inner curved surface and a secondary wheel inner peripheral twisting plane, the secondary wheel body being operative to assemble the mating wheel body, And the secondary wheel rotation fit inner curved surface and the inner wheel inner circumferential twisting plane respectively can correspondingly cooperate with the mating wheel rotary matching outer curved surface and the matching wheel outer peripheral transmitting and twisting plane to pass each other The mating causes the secondary wheel to rotate relative to the mating wheel about the second axis of revolution.

Typically, a drive structure for driving the driven member is formed on the outer peripheral surface of the secondary wheel.

Specifically, the outer peripheral surface of the secondary wheel is formed as a friction surface as the drive structure.

Preferably, the secondary wheel includes a first secondary wheel member and a second secondary wheel member that are detachably coupled to each other in a thickness direction of the secondary wheel.

Based on the technical solutions of the above various wheel members, the present invention provides an automatic adjustment type friction wheel, wherein the automatic adjustment type friction wheel comprises: a guide wheel, wherein the guide wheel is the above-mentioned transmission wheel; The intermediate guide wheel member is the corresponding mating wheel, the transmission wheel wheel body is assembled in the mating wheel body, and the mating wheel is rotated to cooperate with the inner curved surface and the inner circumference of the mating wheel is respectively corresponding to the said The rotation of the transmission wheel cooperates with the outer curved surface and the outer circumference of the transmission wheel to cooperate with each other to enable the engagement wheel to rotate relative to the transmission wheel about the first rotation axis; the friction wheel member, the friction wheel member is The secondary wheel having a friction surface, the mating wheel body is assembled in the secondary wheel body, and the secondary wheel is rotated to cooperate with the inner curved surface and the secondary wheel inner peripheral transmitting and twisting plane respectively corresponding to the Cooperating with the wheel to cooperate with the outer curved surface and the mating wheel outer peripheral torsion plane to cooperate to enable the secondary wheel to rotate relative to the mating wheel about the second axis of rotation Turn.

Preferably, the intermediate guide wheel member includes a first intermediate guide wheel and a second intermediate guide wheel detachably coupled to each other along a thickness direction of the intermediate guide wheel member; the friction wheel member includes a thickness direction of the friction wheel member The first friction wheel and the second friction wheel are detachably connected.

Preferably, a driving wheel rotation limiting step surface is further formed on an outer circumferential surface of the driving wheel wheel body, wherein the first rotation axis runs through the transmission wheel wheel body, and the first rotation axis and the transmission wheel The two intersection points of the outer circumferential surface of the wheel body are the intersections of the first rotation axis and the corresponding outer surface of the rotation of the transmission wheel, and the outer circumferential surface of the transmission wheel wheel body is opposite to the first rotation axis The intersecting regions are respectively formed with the driving wheel rotation limiting step surface, and each of the driving wheel rotation limiting step surfaces is not parallel with the transmission wheel outer peripheral transmitting and twisting plane; the inner circumferential surface of the matching wheel body is formed And a mating wheel inner circumference rotation limit step surface corresponding to each of the transmission wheel rotation limit step surfaces, wherein each of the mating wheel inner circumference rotation limit step surfaces is opposite to the transmission body in the mating wheel body When the wheel body is rotated to the predetermined position, it can be in surface contact with the corresponding transmission wheel rotation limit step to restrict the rotation of the mating wheel body.

As a specific form, the forming curve and the forming straight line of the outer circumferential surface of the driving wheel wheel body include a first elliptical arc, a first arc line, and a first line which are sequentially connected as a closed ring and are in the same plane. a line, a second elliptical arc, a second arc line, and a second line; the first elliptical arc, the first arc line, the second elliptical arc, and the second arc line are concentric, and the first The elliptical arc and the second elliptical arc are respectively a quarter elliptical arc, The first circular arc line and the second circular arc line are respectively a quarter circular arc line and have the same radius; the first rotation axis is perpendicular to the first straight line and the second straight line, and passes through the first circle a center of the arc and the second circular arc, such that the first elliptical surface formed by the first elliptical arc and the first circular arc respectively rotates around the first rotational axis, and the first outer ellipsoid and the transmission wheel a connecting portion between the outer spherical spherical portions is formed with a driving wheel rotation limiting step surface, and the second elliptical arc and the second circular arc are respectively rotated around the first rotating axis to form a transmission wheel. The connecting portion between the second outer ellipsoidal surface and the second outer spherical surface of the transmission wheel is formed with another said driving wheel rotation limiting step surface.

As another optional specific form, the forming curve and the forming straight line of the outer circumferential surface of the driving wheel wheel body include a first parabolic segment, a first circular arc line, which are sequentially connected as a closed ring and in the same plane, a first straight line, a second parabolic line segment, a second circular arc line, and a second straight line; the first circular arc line and the second circular arc line are concentric and symmetrical with respect to a center of the circle, and are respectively a quarter arc line The first parabolic segment and the second parabolic segment are symmetric with respect to a center of the first circular arc line and the second circular arc line; and the first straight line and the second straight line are along the first circular arc line And a radial extension of the second circular arc line; the first rotation axis is perpendicular to the first straight line and the second straight line, and passes through a center of the first circular arc line and the second circular arc line, thereby Forming a transmission between the first parabolic curved surface portion of the transmission wheel and the first outer spherical surface portion of the transmission wheel formed by the first parabolic segment and the first circular arc respectively rotating around the first rotational axis The wheel rotates the limit step surface, and the second throw The connecting portion between the second parabolic curved portion of the transmission wheel and the second outer spherical surface of the transmission wheel formed by the rotation of the line segment and the second circular arc about the first rotation axis respectively forms another rotation limit of the transmission wheel Stepped surface.

Preferably, the outer peripheral surface of the mating wheel body is further formed with a mating wheel outer circumference rotation limiting step surface, wherein the second rotation axis runs through the mating wheel body, and the second rotation axis cooperates with the The two intersection points of the outer circumferential surface of the wheel body are the intersections of the second rotation axis and the corresponding outer surface of the mating wheel, and the outer circumferential surface of the mating wheel body is opposite to the second rotation An area intersecting the axes is respectively formed with a peripheral rotation limit step surface of the mating wheel, and each of the mating wheel outer circumference rotation limit step surfaces is not parallel with the outer circumference of the mating wheel; the inner side of the secondary wheel body a secondary wheel rotation limit step surface corresponding to each of the mating wheel outer circumference rotation limit step surfaces is formed on the circumferential surface, and each of the secondary wheel rotation limit step surfaces is opposite to the secondary wheel body When the mating wheel body rotates to a predetermined position, it can contact the corresponding outer wheel rotation limit step surface of the mating wheel to restrict the second wheel body from continuing to rotate.

As a specific form, the forming curve and the forming straight line of the outer peripheral surface of the mating wheel body include a first elliptical arc, a first arc line, and a first line which are sequentially connected as closed loops and are in the same plane. a line, a second elliptical arc, a second arc line, and a second line; the first elliptical arc, the first arc line, the second elliptical arc, and the first The two arc lines are concentric, and the first elliptical arc and the second elliptical arc are respectively a quarter elliptical arc, and the first arc line and the second arc line are respectively a quarter circle An arc and an equal radius; the second axis of rotation being perpendicular to the first line and the second line, and passing through a center of the first circular line and the second circular line, thereby the first elliptical arc Forming a joint between the first outer ellipsoidal surface of the mating wheel and the first outer spherical surface of the mating wheel formed by the rotation of the line and the first circular arc about the second axis of rotation, respectively, forming a rotation of the outer circumference of the mating wheel a limiting step surface, wherein the second elliptical arc and the second circular arc are respectively rotated around the second rotation axis to form a mating wheel between the second outer ellipsoidal surface and the second outer spherical surface of the mating wheel The engaging portion is formed with another stepping surface of the outer circumference of the engaging wheel.

As another optional specific form, the forming curve and the forming straight line of the outer circumferential surface of the mating wheel body include a first parabolic segment, a first circular arc line, which are sequentially connected as a closed ring and are in the same plane, a first straight line, a second parabolic line segment, a second circular arc line, and a second straight line; the first circular arc line and the second circular arc line are concentric and symmetrical with respect to a center of the circle, and are respectively a quarter arc line The first parabolic segment and the second parabolic segment are symmetric with respect to a center of the first circular arc line and the second circular arc line; and the first straight line and the second straight line are along the first circular arc line And a radial extension of the second circular arc line; the second rotation axis is perpendicular to the first straight line and the second straight line, and passes through a center of the first circular arc line and the second circular arc line, thereby Forming a fit between the first parabolic curved surface portion of the mating wheel and the first outer spherical surface portion of the mating wheel formed by the first parabolic segment and the first circular arc respectively rotating around the first rotational axis The outer circumference of the wheel rotates the limit step surface, the first The engagement portion between the second parabolic curved surface portion of the mating wheel and the second outer spherical surface portion of the mating wheel formed by the parabolic segment and the second circular arc respectively rotating around the second rotational axis is formed with the other outer circumference of the mating wheel Turn the limit step surface.

Further, the present invention provides a drum apparatus including a drum and a drive shaft, wherein the drum apparatus further includes the above-described self-adjusting friction wheel, and the drive shaft is coupled to the guide wheel to be capable of driving the guide wheel to rotate The outer circumferential surface or the inner circumferential surface of the drum is in contact with the outer circumferential friction surface of the friction wheel member to drive the drum to rotate by the rotation of the friction wheel member.

According to the above technical solution, the transmission wheel of the present invention and the mating wheel cooperate therewith, because the outer circumferential surface of the transmission wheel and the inner circumferential surface of the matching wheel cooperate with each other, and the rotation matching curved surface and the torsion plane of each wheel member are formed by corresponding shapes. The curved line and the straight line surround a curved surface and a part of a plane formed perpendicular to the same rotational axis of the torsion plane (ie, the first rotational axis), so that after the transmission wheel and the mating wheel are assembled, the mating wheel can be relative to the transmission wheel during the transmission process Rotating around the first axis of revolution to have a degree of freedom of rotation in one direction to be able to adjust position during transmission; based on the same principle, when the mating wheel is further mated with the secondary wheel, the secondary during the transmission The wheel is also rotatable relative to the mating wheel about the second axis of revolution, due to the first axis of revolution and the second axis of revolution Non-coincident (ie, an angle between the outer circumferential transmitting torsion plane of the mating wheel and the inner circumferential transmitting and twisting plane of the mating wheel), when the driving wheel, the mating wheel and the secondary wheel form a secondary fit, the formed transmission wheel The assembly actually has a rotational freedom in both directions as a whole. Therefore, the mutually cooperating wheel members provided by the present invention break through the structure of the conventional single transmission wheel, and the mutual cooperation of the two or more wheel members enables the assembled transmission wheel assembly to pass the torque reliably. The cooperating wheel members rotate in other degrees of freedom that do not affect the torque transmission, enabling position adjustment during the transmission process to enable more efficient transmission in accordance with the actual conditions in the transmission process. In particular, in the self-adjusting friction wheel of the present invention, the two-layer fit is formed by the transmission wheel, the engagement wheel of the engagement wheel and the secondary wheel, the intermediate guide wheel and the friction wheel, which have two overalls. The rotational freedom of the direction, so the self-adjusting friction wheel has an automatic position adjustment function, which can adjust the positional relationship with the driven member (for example, the drying drum), so that the drum transmission device does not need to be repeatedly and accurately performed during the installation process. Adjustments save installation costs and simplify installation. At the same time, since the self-adjusting friction wheel has a position adjustment function, the positional relationship with the driven member (for example, the drum) can be relatively self-adjusted, so that the driven member can be automatically adapted relatively efficiently during operation, such as a roller. Geometrical errors due to thermal deformation and stress deformation reduce wear and noise, thereby improving work performance.

Other features and advantages of the invention will be described in detail in the detailed description which follows. DRAWINGS

The following drawings are provided to provide a further understanding of the present invention, and are a part of the specification, which is used to explain the invention together with the specific embodiments described below, but the scope of the invention is not limited to the following drawings and embodiments. the way. In the drawing:

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a cross-sectional structural view showing a drying drum transmission device in a prior art drying drum apparatus.

2 is a perspective exploded view of the self-adjusting friction wheel of the embodiment of the present invention, showing the transmission wheel, the matching wheel and the secondary wheel respectively serving as a guide wheel, an intermediate guide wheel and a friction wheel according to an embodiment of the present invention, The self-adjusting friction wheel of the present invention can be formed by assembling these wheel members.

3 is a front elevational view of the self-adjusting friction wheel of the embodiment of the present invention.

Figure 4 is a cross-sectional view, taken along the Y-axis of Figure 3, of the self-adjusting friction wheel of the present invention.

Figure 5 is a cross-sectional view, taken along line X of Figure 3, of the self-adjusting friction wheel of the present invention.

Figure 6 is a side elevational view of a drive wheel for use as a guide wheel in accordance with an embodiment of the present invention.

Figure 7 is a cross-sectional view, taken along the Y-axis of Figure 6, of the transmission wheel of the present invention as a guide wheel, showing a curve for forming the respective curved surfaces of the outer surface of the transmission wheel. Figure 8 is a perspective view of a transmission wheel used as a guide wheel in accordance with an embodiment of the present invention.

Fig. 9 is a cross-sectional structural view similar to Fig. 7, showing a curve of each of the curved surfaces for forming the outer surface of the transmission wheel of another modified embodiment.

DESCRIPTION OF THE INVENTION

1 guide wheel; 2 first intermediate guide wheel;

3 first friction wheel; 4 second friction wheel;

5 second intermediate guide wheel; 6 intermediate guide wheel member;

7 friction wheel parts; 8, 9 bolts, nuts;

10, 11 bolts, nuts; 12 drive shaft mounting holes;

13 key slot; 14 torque transmission plane mating structure;

14a transmission wheel outer peripheral twisting plane; 14b cooperate with the inner circumference of the wheel to twist the plane;

15 torque transmission plane matching structure; 15a cooperate with the outer circumference of the wheel;

15b secondary wheel inner circumference twisting plane; 16 rotation limit structure;

16a transmission wheel rotates the limit step surface; 16b cooperates with the inner circumference of the wheel to rotate the limit step surface;

17 rotation limit structure; 17a cooperate with the outer circumference of the wheel to rotate the limit step surface;

17b secondary wheel rotation limit step surface; 18 transmission wheel first outer spherical surface;

19 drive wheel second outer spherical surface; 20 drive wheel first outer ellipsoid;

21 transmission wheel second outer ellipsoidal face; 22 matching wheel first inner spherical surface;

23 with the first inner ellipsoidal face of the wheel; 24 with the second inner spherical face of the wheel;

25 cooperate with the wheel of the second inner ellipsoidal face; 26 cooperate with the wheel of the first outer spherical surface;

27 with the first outer ellipsoidal face of the wheel; 28 with the second outer spherical surface of the wheel;

29 with the second outer ellipsoidal face of the wheel; 30 the first inner spherical surface of the secondary wheel;

31 secondary wheel first inner ellipsoidal face; 32 secondary wheel second inner spherical surface;

33 secondary wheel second inner ellipsoidal face; 34 friction surface;

35 fastener mounting holes; 36 fastener mounting holes;

A first elliptical arc; B first arc line;

C second elliptical arc; D second arc line. detailed description

The specific embodiments of the present invention are described in detail below with reference to the accompanying drawings, it should be understood that The specific embodiments described are only intended to illustrate and explain the present invention, and the scope of the present invention is not limited to the specific embodiments described below.

It should be noted that the transmission wheel, the mating wheel and the secondary wheel provided by the present invention are not limited to the case of assembling by three wheel members as shown in FIG. 2 to FIG. 5, and are within the technical concept of the present invention as needed. It is perfectly possible to assemble a transmission wheel assembly with one rotational freedom through two wheel members. In addition, the transmission wheel, the mating wheel and the secondary wheel of the present invention can be used as an integral wheel member in the case of being assembled by a suitable assembling method. Of course, for ease of assembly, it can also be used as the middle as shown in FIG. The mating wheel of the guide member 6 is divided into a first intermediate guide 2 and a second intermediate guide 5, but it is explained in advance that the intermediate guide member 6 of the overall form or the first intermediate guide after the split Both the second intermediate guide wheel 5 and the second intermediate guide wheel 5 are within the scope of the basic technical concept of the mating wheel described below. The same is true for the drive wheel and the secondary wheel. In addition, for ease of understanding, in the following description, the z-axis or the Z-direction indicates the axial direction along the transmission wheel, and the X-axis and the Y-axis (or the X-direction and the Y-direction) are perpendicular to the Z-axis and the X-axis and the Y-axis, respectively. The X, Υ, and Ζ axes are formed as three-dimensional coordinate axes, but it should be noted that this is only for the purpose of understanding the technical system of the present invention and the technical effects thereof, and does not constitute a pair. Limitations of the scope of the invention.

In order to facilitate those skilled in the art to understand the technical solution of the present invention, a transmission wheel, a mating wheel and a secondary wheel according to a specific embodiment of the present invention are first described below with reference to FIGS. 2 to 9, wherein the specifics are shown in FIGS. 2 to 5. The form of the drive wheel is used as the guide wheel 1, the mating wheel is used for the intermediate guide wheel member 6, and the secondary wheel is used as the friction wheel member 7.

Referring to FIG. 2 and FIG. 6 to FIG. 8 , wherein the guide wheel 1 adopts a transmission wheel of a specific embodiment within the scope of the technical idea of the present invention, as shown, the transmission wheel used as the guide wheel 1 includes a transmission wheel wheel body. The outer peripheral surface of the transmission wheel wheel body includes a circumferentially arranged transmission wheel rotation fit outer curved surface and a transmission wheel outer circumferential transmission twist plane 14a, and the transmission wheel outer circumferential transmission twist plane 14a is two in the same plane (here) Two or more "contains two or more cases, the following relates to the peripheral torsion plane or the inner circumference torsion plane of each wheel, and will not be described again," wherein each of the transmission wheels is rotated to cooperate with the outer surface. And a part of the corresponding curved surface formed by the respective forming curves around the first rotation axis Y perpendicular to the outer peripheral transmitting plane 14a of the transmission wheel, and the outer peripheral transmitting and twisting planes 14a of the respective driving wheels are respectively formed by the respective forming straight lines. The axis of revolution Y rotates a portion of the corresponding plane formed. Specifically, as shown in FIG. ,, the forming curve and the forming straight line of the outer circumferential surface of the transmission wheel wheel body include a first elliptical arc, a first arc line B, and a first arc line which are sequentially connected as a closed ring and are in the same plane. a straight line, a second elliptical arc C, a second arc line D, and a second line; the first elliptical arc A, the first arc line B, the second elliptical arc C, and the second arc line D are concentric And the first elliptical arc A and the second elliptical arc C are respectively a quarter elliptical arc, and the first arc line B and the second arc line D are respectively a quarter arc line and the radius is equal ; the first axis of rotation Y is perpendicular to The first straight line and the second straight line pass through the center of the first circular arc line B and the second circular arc line (D). Thus, the first elliptical arc A rotates around the first axis of revolution Y to form a first outer ellipsoidal portion 20 of the transmission wheel, and the first circular arc B rotates around the first axis of revolution Y to form a first outer spherical portion 18 of the transmission wheel. The first outer ellipsoidal surface 20 of the transmission wheel and the first outer spherical surface 18 of the transmission wheel intersect at a position on the circumference of the rotation (ie, the first outer spherical surface 18 of the transmission wheel and the first outer ellipsoidal surface 20 of the transmission wheel are each rotated The sum of the angles is 360°), for example, the first outer ellipsoidal surface 20 of the transmission wheel occupies a range of 180° of the circumference of the rotation, and the first outer spherical surface 18 of the transmission wheel occupies another 180° of the circumference of the rotation, so that the transmission wheel is first The outer spherical surface portion 18 is engaged with the first outer ellipsoidal surface portion 20 of the transmission wheel. Similarly, the first straight line and the second straight line respectively rotate around the first rotation axis Y, thereby forming a transmission wheel outer peripheral twisting plane 14a. In FIG. 7, the radius of the first circular arc line B is equal to the first elliptical arc A. The length of the major axis of the ellipse, so the length of the first straight line and the second straight line is the radius of the first circular arc line B minus the short axis length of the first elliptical arc A, that is, 11 indicated in FIG. It should be noted here that since the outer peripheral transmitting and twisting plane 14a of the driving wheel is formed by the first straight line or the second straight line is rotated around the first rotating axis Y, the inner side edge and the outer side edge of the outer peripheral transmitting twisting plane 14a of the driving wheel are round. arc. Similarly, similar to the first outer spherical surface 18 of the transmission wheel and the first outer ellipsoidal surface 20 of the transmission wheel, the second elliptical arc D is rotated about the first axis of revolution Y to form a second outer ellipsoidal portion 21 of the transmission wheel. The second circular arc line C is rotated about the first rotation axis Y to form a second outer spherical surface portion 19 of the transmission wheel. In each of the above transmission wheels, the outer curved surface is rotated (ie, the first outer spherical surface 18 of the transmission wheel, the first outer ellipsoidal surface 20 of the transmission wheel, the second outer ellipsoidal surface 21 of the transmission wheel, and the second outer spherical surface of the transmission wheel 19 After forming the outer peripheral transmitting torsion plane 14a of the transmission wheel, it should be noted that since the thickness of the transmission wheel wheel body is W, the rotation of the respective transmission wheel and the outer curved surface of the transmission wheel and the outer circumferential transmission twisting plane 14a are not forming curves or forming straight lines. The entire surface of the curved surface and the plane formed by the rotation, for example, the rotation of the outer surface of each of the transmission wheels is limited by the rotation angle of the rotation circumference of the transmission wheel, and is also limited by the thickness W of the transmission wheel body, that is, the rotation surface of each transmission wheel is matched with the outer surface. And the outer peripheral transmitting torsion plane 14a of the transmission wheel is a portion formed by a corresponding forming curve or a forming linear rotation and a plane in the range of the thickness W of the transmission wheel body. The forming principle of the inner circumferential surface and the outer circumferential surface of the fitting wheel described below, and the inner circumferential surface of the secondary wheel are similar to those described above, and will not be described below.

It should be noted that the first elliptical arc A and the first circular arc B are respectively rotated around the first rotation axis Y to form a first outer ellipsoidal portion 20 of the transmission wheel and the first outer portion of the transmission wheel. The engaging portion between the spherical surface portions 18 naturally forms a stepped surface which is used as the driving wheel rotation limiting step surface 16a in the preferred mode of the present invention, and the second elliptical arc C and the second circular arc line D are respectively wound around The connecting portion between the second outer ellipsoidal portion 21 of the transmission wheel and the second outer spherical portion 19 of the transmission wheel formed by the rotation of the first rotation axis Y is also naturally formed with another transmission wheel rotation limit step surface 16a. Further, the transmission wheel wheel body is formed with a connection structure for connecting the drive shaft. Typically, as shown in FIG. 8, for example, the connection structure may be formed on the transmission wheel body along the axial direction of the transmission wheel. The drive shaft mounting hole 12 is formed with a key groove 13 on the inner wall of the drive shaft mounting hole 12 so as to be connected to the drive shaft through the key tooth key groove structure.

In order to cooperate with the above-mentioned transmission wheel used as the guide wheel 1, as shown in Fig. 2, a specific form of the engagement wheel of the present invention serves as the intermediate guide member 6, and the intermediate guide member 6 of Fig. 2 is divided into the first intermediate guide. The wheel 2 and the second intermediate guide wheel 5, which are only for ease of assembly, in fact, the first intermediate guide wheel 2 and the second intermediate guide wheel 5 may be formed as a single piece, in FIG. 2 the first intermediate guide wheel 2 and The second intermediate guide wheel 5 is coupled to the intermediate guide member 2 by a respective fastener mounting hole 36 and fasteners (e.g., bolts, nuts 10, 11) when assembled.

As shown in FIG. 2, a specific form of the mating wheel for the above-mentioned transmission wheel engagement is used as the intermediate guide wheel member 6. The specific form of the mating wheel includes a hollow mating wheel body in which the inner circumference of the wheel body is engaged. The surface includes a circumferentially arranged mating wheel rotatably engaging the inner curved surface and the mating wheel inner peripheral twisting plane 14b, the mating wheel body can be used to assemble the driving wheel wheel body, and each of the mating wheels is rotatably fitted with the inner curved surface and the mating wheel The circumferential torsion planes 14b can respectively cooperate with the respective transmission wheel rotationally engaging outer curved surfaces and the transmission wheel outer peripheral torsion planes 14a to enable the mating wheels to be able to rotate around the first axis of revolution Y by mutual cooperation The drive wheel rotates. Obviously, the rotation surface of the respective transmission wheel of the outer circumferential surface of the transmission wheel corresponds to the outer curved surface of the transmission wheel and the outer circumferential transmission surface 14a of the transmission wheel. The inner circumferential surface of the engagement wheel of the specific form includes the first inner spherical surface 22 of the engaging wheel. Cooperating with the first inner ellipsoidal surface 23, the second inner spherical surface 24 of the engaging wheel, the second inner ellipsoidal surface 25 of the engaging wheel, and the inner circumferential torsion plane 14b of the two mating wheels, specifically through the corresponding forming curve and forming The principle of the rotation of the curve around the first axis of revolution Y is similar and will not be described herein. Further, similarly, the engaging portion of the first inner spherical surface portion 22 of the wheel and the first inner ellipsoidal surface portion 23 of the engaging wheel, and the engaging portion of the second inner spherical surface portion 24 of the engaging wheel and the second inner ellipsoidal surface portion 25 of the engaging wheel Naturally formed with the inner circumference rotation limit step surface 16b of the fitting wheel.

At the time of assembly, the transmission wheel body used as the guide wheel 1 is fitted in the mating wheel body, and each of the mating wheels of the inner peripheral surface of the engaging wheel of the intermediate guide wheel member 6 is rotatably fitted with the inner curved surface (ie, the first inner circle of the engaging wheel) The spherical surface portion 22, the mating wheel first inner ellipsoidal surface portion 23, the mating wheel second inner spherical surface portion 24, the mating wheel inner inner ellipsoidal surface portion 25) and the mating wheel inner peripheral twisting plane 14b respectively correspond to the outer circumference of the transmission wheel The respective transmission wheel of the surface cooperates with the outer curved surface and the outer peripheral transmitting and twisting plane 14a of the transmission wheel to cooperate with the engaging wheel to rotate relative to the transmission wheel about the first rotational axis Y. At this time, it should be noted that, because each of the mating wheel rotates and cooperates with the inner curved surface, correspondingly cooperates with each of the transmission wheels to cooperate with the outer curved surface, and the corresponding forming curve is formed to rotate around the first rotation axis Y, and at the same time, the inner circumference of the wheel is twisted. The plane 14b is opposite to and in contact with the outer peripheral transmitting and twisting plane 14a of the transmission wheel to constitute a torque transmission flat The surface mating structure 14 is configured to be capable of reliably transmitting torque, and the inner peripheral transmitting and twisting plane 14b of the mating wheel and the outer peripheral transmitting and twisting plane 14a of the transmitting wheel are also formed by rotating the corresponding forming straight line around the first rotating axis Y, thereby not affecting The rotation of the mating wheel relative to the transmission wheel about the first axis of rotation Y, after the transmission wheel is fixed to the drive shaft, the mating wheel used as the intermediate guide member 6 can be rotated relative to the transmission wheel as the guide wheel 1 The degree of freedom of rotation in one direction, that is, the degree of freedom of rotation about the first axis of revolution Y, to adjust the position by rotation. It should be noted that, after the transmission wheel and the mating wheel are assembled, the driving wheel rotation limiting step surface 16a and the corresponding matching wheel inner circumference rotation limiting step surface 16b constitute a rotation limiting structure 16, in the transmission When the wheel body is assembled in the mating wheel body, the driving wheel rotation limiting step surface 16a is opposite to the corresponding matching wheel inner circumference rotation limiting step surface 16b and has a spacing, due to the cooperation of the inner circumferential surface of the matching wheel The wheel rotation fit inner curved surface and the inner circumferential transmission twisting plane 14b respectively correspondingly cooperate with the respective transmission wheel rotation matching outer curved surface of the transmission wheel and the outer circumferential transmission twisting plane 14a of the transmission wheel, in order to rotate the limit step surface 16a at the transmission wheel Forming a space with the corresponding inner circumference rotation limit step surface 16b of the mating wheel, for example, the inner circumference rotation limit step surface 16b of the inner circumference of the mating wheel body can be rotated perpendicular to the inner circumference of the mating wheel to limit the step surface The direction of 16b is cut off by a predetermined thickness. The rotation limit structure 16 has the advantages that the rotation of the mating wheel relative to the transmission wheel can be prevented. After the mating wheel is rotated relative to the transmission wheel to a predetermined extent, the transmission wheel rotation limit step surface 16a and the corresponding mating wheel inner circumference rotation limit The step surface 16b is in contact, thereby functioning as a limit. The rotation limiting structure 16 can be various kinds of various known rotation limiting structures, and is not limited to the form of the limiting step surface shown in FIG. 2 to FIG. 8. Of course, even if the rotation limiting structure 16 is not provided, the present invention is not affected. Inventing the object of automatic position adjustment, the provision of the rotation limit structure 16 is only a preferred form of the invention.

It should be noted here that, in FIGS. 2 to 5, the mating wheel of the above-described embodiment of the present invention functions as the intermediate guide member 6, which further cooperates with the friction wheel member 7 described below, thereby The two-stage fit is constituted, but the present invention is not limited thereto, and the mating wheel of the above-described embodiment may constitute only one-stage cooperation with the transmission wheel, of course, in this case, as the transmission wheel of the guide wheel 1 and as the intermediate guide member 6. There is only a degree of freedom of rotation in one direction, but such a level fit also belongs to the technical idea of the present invention. In this case, the outer peripheral surface of the mating wheel may be directly formed with a driving structure for driving the driven member, and typically, the outer peripheral surface of the mating wheel is formed as a friction surface 34 as the driving structure.

As a typical embodiment, as shown in FIG. 2, the mating wheel may further cooperate with a secondary wheel to form a secondary fit, such as in FIGS. 2 to 5, as the intermediate guide member 6. The mating wheel can be further mated with the secondary wheel as the friction wheel member 7. In this case, the outer peripheral surface of the mating wheel body includes a mating wheel rotationally fitted outer curved surface and a mating wheel outer peripheral twisting plane 15a arranged in the circumferential direction. Similarly, the number of the mating wheel outer peripheral twisting plane 15a may be one Or two or more in the same plane or parallel to each other, here It should be noted that there should be an angle between the outer peripheral transmitting and twisting plane 15a of the mating wheel and the inner peripheral transmitting and twisting plane 14b of the mating wheel, which enables the secondary wheel and the mating wheel to rotate about different axes after the secondary fitting. Thereby, two degrees of freedom of rotation are obtained. Preferably, the mating wheel outer peripheral torsion plane 15a may be perpendicular to the inner circumference of the mating wheel, such that the first axis of rotation Y and the second axis of rotation X are mutually vertical. Each of the mating wheel rotation-fitting outer curved surfaces is a part of a corresponding curved surface formed by the respective forming curves around a second swivel axis X perpendicular to the outer peripheral transmitting-twisting plane 15a of the mating wheel, and each of the mating wheel outer peripheral transmitting and twisting planes 15a is The respective forming lines rotate a portion of the respective plane formed by the second axis of revolution X.

Specifically, for example, as shown in FIG. 2, the forming curve and the forming straight line of the outer peripheral surface of the mating wheel may be similar to the forming curve and the forming straight line of the outer peripheral surface of the above-described transmission wheel, for example, the said outer peripheral surface of the mating wheel body The forming curve and the forming straight line include a first elliptical arc, a first circular arc, a first straight line, a second elliptical arc, a second circular arc, and a second straight line which are sequentially connected as a closed loop and are in the same plane; The first elliptical arc, the first arc line, the second elliptical arc, and the second arc line are concentric, and the first elliptical arc and the second elliptical arc are respectively a quarter elliptical arc The first circular arc line and the second circular arc line are each a quarter arc line and have the same radius; the second rotation axis X is perpendicular to the first straight line and the second straight line, and passes through the The center of the first circular arc line and the second circular arc line.

In this case, the forming principle of the rotation of the outer surface of the mating wheel and the outer peripheral curved surface 15a of the mating wheel is similar to the forming principle of the outer peripheral surface of the transmission wheel, and will not be described herein, specifically, The outer peripheral surface of the wheel forms a mating wheel first outer spherical surface portion 26, a mating wheel first outer ellipsoidal surface portion 27, a mating wheel second outer spherical surface portion 28, a mating wheel second outer ellipsoidal surface portion 29, and two mating wheels. Twist the plane 15a.

Similarly, the first elliptical arc and the first circular arc are respectively rotated around the second rotation axis X to form a mating wheel between the first outer ellipsoidal surface portion 27 and the mating wheel first outer spherical portion 26 The engaging portion is naturally formed with a matching outer wheel rotation limiting step surface 17a, and the second elliptical surface formed by the second elliptical arc and the second circular arc respectively rotating around the second rotation axis X The engaging portion between the portion 29 and the second outer spherical surface portion 28 of the engaging wheel is naturally formed with the other engaging wheel outer peripheral rotation restricting step surface 17a.

On the basis of this, as shown in FIG. 2, a specific form of the secondary wheel of the present invention cooperates with the above-mentioned mating wheel. For example, the secondary wheel can be used as the friction wheel member 7 shown in FIG. 2, which is the second embodiment. The stage wheel includes a hollow secondary wheel body, wherein an inner circumferential surface of the secondary wheel body includes a circumferentially disposed secondary wheel swivel inner surface and a secondary wheel inner circumferential twisting plane 15b, The secondary wheel body can be used to assemble the mating wheel body, and the secondary wheel swivel fit inner curved surface and the secondary wheel inner peripheral twisting plane 15b can respectively rotate and cooperate with the mating wheel to cooperate with the outer curved surface and Cooperating with the wheel outer peripheral twisting plane 15a to enable the secondary wheel to be able to The second axis of revolution X is rotated relative to the mating wheel. Obviously, corresponding to each of the mating wheel rotationally fitting outer curved surface of the mating wheel and the mating wheel outer peripheral twisting plane 15a, the inner peripheral surface of the specific form of the secondary wheel includes a secondary inner first spherical surface 30. The secondary inner first ellipsoidal surface 31, the secondary inner second inner spherical surface 32, the secondary inner second ellipsoidal surface 33, and the two secondary inner peripheral inner twisting planes 15b, specifically The principle of the corresponding forming curve and the forming curve being rotationally formed around the second axis of rotation X is similar and will not be described herein. Further, likewise, the engagement portion of the secondary inner first spherical surface portion 30 and the secondary inner first ellipsoid portion 31 and the secondary inner second inner spherical portion 32 and the secondary inner second inner ellipsoid portion The joint portions of 33 are naturally formed with a secondary wheel rotation limit step surface 17b, respectively.

At the time of assembly, the assembly wheel body serving as the intermediate guide member 6 is fitted in the secondary wheel body serving as the friction wheel, and the respective engagement wheels as the inner circumferential surface of the secondary wheel of the friction wheel member 7 are rotated to fit the inner curved surface. (i.e., secondary wheel first inner spherical surface portion 30, secondary wheel first inner ellipsoidal surface portion 31, secondary wheel second inner spherical surface portion 32, secondary wheel second inner ellipsoidal portion 33) and secondary wheel The inner circumferential twisting planes 15b respectively cooperate with the respective mating wheel rotation fitting outer curved surfaces of the mating wheel outer surface and the mating wheel outer peripheral twisting plane 15a to enable the secondary wheel to wrap around the second pivot axis X by mutual cooperation Rotating relative to the mating wheel. Similar to the cooperation of the above-mentioned transmission wheel and the matching wheel, since each of the secondary wheel rotations cooperates with the inner curved surface to correspondingly cooperate with each of the mating wheels, and the corresponding forming curve is formed around the second rotation axis X, and simultaneously The inner-wheel inner circumferential twisting plane 15b is opposite to and in contact with the outer peripheral transmitting and twisting plane 15a of the mating wheel to constitute a torque transmission plane engaging structure 15 to be able to reliably transmit torque, and the secondary wheel inner peripheral transmitting flat surface 15b and the mating wheel outer circumference The twisting plane 15a is also formed by the rotation of the corresponding forming straight line about the second swivel axis X, so that the rotation of the secondary wheel relative to the mating wheel about the second swivel axis X is not affected, thereby having the rotational freedom in the other direction, That is, the degree of freedom of rotation about the second axis of revolution X, so that the position can be adjusted by further rotation. It should be noted that, after the secondary wheel and the mating wheel are assembled, the secondary wheel rotation limiting step surface 17b and the corresponding mating wheel outer circumference rotation limiting step surface 17a constitute a rotation limiting structure 17, In the case where the wheel body is fitted in the secondary wheel body, the secondary wheel rotation limit step surface 17b is opposite to the corresponding engagement wheel outer circumference rotation limit step surface 17a and has an interval, because the secondary wheel inner circumference The respective secondary wheel rotation matching inner curved surface and the secondary wheel inner circumferential transmission twisting plane 15b respectively correspondingly cooperate with the respective transmission wheel rotation matching outer curved surfaces of the fitting wheel outer surface and the fitting wheel outer circumferential transmitting and twisting plane 15a, in order to be in the secondary The wheel rotation limit step surface 17b is spaced apart from the corresponding secondary wheel outer circumference rotation limit step surface 17a. For example, the secondary wheel rotation limit step surface 17b on the inner circumference of the secondary wheel body may be perpendicular to the secondary The direction in which the wheel rotates the limit step surface 17b is cut off by a predetermined thickness. The rotation limit structure 17 has an advantage in that the secondary wheel can be prevented from rotating excessively with respect to the mating wheel, and after the secondary wheel is rotated to a predetermined extent with respect to the mating wheel, the secondary wheel rotation limit step surface 17b and the corresponding mating wheel are rotated peripherally. The limit step surface 17a is in contact, thereby functioning as a limit. Similarly, the rotation limiting structure 17 can be in various forms of various known rotation limiting structures, and is not limited to the form of the limiting step surface shown in FIG. 2 to FIG. 8. Of course, even if the rotation limiting structure 17 is not provided, The implementation of the automatic position adjustment purpose of the present invention does not affect the setting of the rotation limit structure 17 as a preferred form of the invention.

Different from the above-mentioned transmission wheel and the mating wheel, the transmission wheel, the matching wheel and the secondary wheel (for example, the guide wheel 1, the intermediate guide member 6 and the friction wheel member 7 respectively shown in FIG. 2) A secondary fit is formed, in which case a drive structure for driving the driven member, such as a meshing tooth or the like, is formed on the outer peripheral surface of the secondary wheel. Typically, the outer peripheral surface of the secondary wheel is formed as a friction surface 34 as the drive structure. For example, the outer peripheral surface of the friction wheel member 7 shown in Fig. 2 is formed as a friction surface 34 to drive the driven member (e.g., the drum) by friction.

The transmission wheel as the guide wheel 1 of the exemplary embodiment shown in Figs. 2 to 8, the mating wheel as the intermediate guide wheel member 6, and the secondary wheel as the friction wheel member 7 have been described. These wheel parts can generally be processed by injection molding, and then some finishing can be performed. To help the person skilled in the art understand, the guide wheel 1 shown in FIG. 8 is exemplified in detail to describe the forming principle of the outer peripheral surface thereof, but the description of the forming principle is mainly used to help the understanding of the person in the field, and does not represent the actual machining process. .

Referring to FIG. 7, FIG. 7 is a cross-sectional view taken along the center of the thickness direction of the guide wheel 1, wherein A is a first elliptical arc, B is a first arc line, and C is a second ellipse. The arc, D is the second arc line. The center of the first elliptical arc, the first arc line B, the second elliptical arc C, and the second arc line D pass the coordinate origin 0. Rotating the first elliptical arc A about the first axis of revolution Y to form the first outer ellipsoidal portion 20 of the transmission wheel. For example, the rotation angle of the first elliptical arc A from the section position shown in FIG. 7 on the circumference of rotation is -95 ° to 95°, that is, a curved surface formed by the first elliptical arc A at the cross-sectional position shown in FIG. 7 as a starting position of 95° and a reverse rotation of 95° (hereinafter, similarly, no longer described), first The circular arc line B rotates around the first rotation axis Y to form the first outer spherical surface portion 18 of the transmission wheel (for example, the rotation area is -85° to 85°), and the second elliptical arc C forms the transmission wheel around the first rotation axis Y. The outer ellipsoidal surface 21 (for example, the rotation area is -95° to 95°), and the second circular arc line D is rotated about the first rotation axis Y to form the second outer spherical surface portion 19 of the transmission wheel (for example, the rotation area is -85°) To 85°). Similarly, the second straight line between the first elliptical arc A and the second circular arc line D and the first straight line between the first circular arc line B and the second elliptical arc C form around the first rotation axis Y The twist plane 14a is transmitted. As described above, in this case, the respective rotationally fitting outer curved surfaces and the torsion planes of the outer peripheral surface of the transmission wheel of the guide pulley 1 are integrally connected, and the finite step surface 16a is naturally formed, wherein the torque band is transmitted for transmission. The torque, the limit step surface serves as a rotation range for restricting the above-described engagement wheel as the intermediate guide member 6.

As described above, the transmission wheel as the guide wheel 1, the mating wheel as the intermediate guide member 6, and the friction wheel When the secondary wheel of the piece is fitted with the two-staged transmission wheel assembly shown in FIGS. 3 to 5, the first friction wheel 3 and the second friction wheel 4 are connected by fasteners (for example, bolts, nuts 8, 9). The friction wheel constitutes a ball seat, and the intermediate guide wheel member 6 connected by the first intermediate guide wheel 2 and the second intermediate guide wheel 5 constitutes a ball head, and the ball seat cooperates with the ball head to form a ball joint, which limits two The rotational degrees of freedom of the directions (i.e., the x-axis and the x-axis are not rotatable about the first swivel axis shown in Figures 3 to 5), but the friction wheel member 7 is rotatable about the second swivel axis X-axis; further, the middle The guide member 7 also serves as a ball seat, and the guide wheel 1 serves as a ball head. The ball seat cooperates with the ball head to form a ball joint, which limits two degrees of rotational freedom (ie, limits the freedom of rotation of the X-axis and the x-axis direction of the second rotary axis) Degree), but the intermediate guide member 6 is rotatable about the second axis of revolution. After the overall assembly, the self-adjusting friction wheel has a rotational degree of freedom on the two-pole joint, so that the whole has two degrees of rotational freedom, that is, the self-adjusting friction wheel can transmit the torque around the shaft, and can be along the friction wheel The crucible is rotatable relative to the intermediate guide member about the second pivot axis X, and the intermediate guide member 6 is rotatable relative to the guide pulley 1 about the first pivot axis, thereby achieving the function of automatically adjusting the position.

In addition, each of the wheel members described above with reference to FIGS. 2 to 8 is only a specific form within the scope of the technical idea of the present invention, which generates a corresponding limit step surface, a torque plane, and each component wheel member according to a geometric principle. Rotating the curved surface, the limiting step surface in the form of the portion where the arc surface and the elliptical arc surface are joined may be a slope or a straight surface, and the limit step surface of the inner circumference of the friction wheel member 7 and the outer circumference of the intermediate guide member 6 are limited. The step faces may be initially parallel and spaced apart during assembly, and when the friction wheel member 7 is rotated relative to the intermediate guide member to a predetermined position, the limit step surface of the inner circumference of the friction wheel member 7 and the outer circumference of the intermediate guide member 6 The limit step surfaces are in contact with each other to restrict the friction wheel member 7 from continuing to rotate relative to the intermediate guide wheel member, and the limit step surface of the inner circumference of the intermediate guide wheel member 6 and the limit step surface of the outer circumference of the guide wheel are parallel to each other when assembled. And having a spacing, when the intermediate guide member 6 is rotated relative to the guide wheel to a predetermined position, the limit step surface of the inner circumference of the intermediate guide member 6 and the limit step surface of the outer circumference of the guide wheel are in contact with each other to limit The intermediate guide member 6 continues to rotate relative to the guide pulley. In the forming process, the thickness of the inner circumference of the friction wheel member 7 may be slightly larger than the thickness of the outer circumference of the intermediate guide member, which can increase the range of the rotation angle of the friction member. Similarly, the thickness of the inner circumference of the intermediate guide member 6 (i.e., the thickness formed after the first and second intermediate guide wheels are joined) may be slightly larger than the thickness of the outer circumference of the guide pulley. In the process of driving the drum, the self-adjusting friction wheel can rotate about the second rotation axis X and the first rotation axis 分别 respectively because the two wheel members in the friction wheel are respectively rotated, so that when the bearing transmits the force, The torque transmission belt sequentially drives the intermediate guide wheel member and the friction wheel member to rotate around the yoke axis, and the position of the friction wheel on the X axis and the Υ axis is automatically adjusted by the limit belt to meet the effective transmission torque.

The transmission wheel, the mating wheel and the secondary wheel of one embodiment of the present invention have been described above with reference to Figs. 2 through 8. In fact, within the scope of the technical idea of the present invention, it is not limited to the above specific embodiment. For example, as shown in FIG. 9, A1 and C1 are respectively parabolic lines, which can replace the first and second elliptical arcs in FIG. A, C song The line is an ellipse. Specifically, the forming curve and the forming straight line of the outer circumferential surface of the driving wheel wheel body include a first parabolic segment A1, a first arc line B, a first straight line, which are sequentially connected as a closed ring and are in the same plane. a second parabolic segment C1, a second circular arc line D and a second straight line; the first circular arc line B and the second circular arc line D are concentric and symmetrical with respect to a center of the circle, and are respectively a quarter arc line; The first parabolic segment and the second parabolic segment are symmetric with respect to a center of the first circular arc line B and the second circular arc line D; and the first straight line and the second straight line are along the first circular arc a radial extension of the line B and the second circular arc line D; the first rotation axis Y is perpendicular to the first straight line and the second straight line, and passes through the first circular arc line B and the second circular arc line a center of D, such that the first parabolic segment and the first circular arc B are rotated about the first axis of revolution, respectively, between the first parabolic curved portion of the transmission wheel and the first outer spherical portion 18 of the transmission wheel The connecting portion is formed with a driving wheel rotation limiting step surface 16a, the second parabolic segment and the second circle About the line D, respectively, the second transmission wheel paraboloid outer portion and a second transmission wheel rotating ball first pivot axis formed between the engagement portion 19 is formed with a portion of another drive wheel rotation limiting the stepped surface 16a.

In addition, for example, in FIG. 7, the first elliptical arc A and the first arc line B may be replaced by one large semi-circular line, and the second elliptical arc C and the second arc line D may be replaced by a small semi-circular line. The purpose of the present invention to achieve one degree of freedom rotation can also be achieved by the above-described forming principle. In addition, the torsion planes on the respective wheel members are not limited to forming two, and as long as the requirements for the torsional strength are satisfied, they may be formed into one or more, as long as they are in the same plane or parallel to each other, which does not affect the rotation. .

Therefore, the following basic technical concept of the transmission wheel, the mating wheel, and the secondary wheel of the present invention can be summarized by the above description, and any wheel member used as a transmission function can adopt the technical features within the scope of the following technical concept of the present invention. All fall within the scope of protection of the present invention.

Specifically, the transmission wheel of the present invention includes a transmission wheel wheel body, wherein an outer circumferential surface of the transmission wheel wheel body includes a transmission wheel rotationally fitted outer curved surface and a transmission wheel outer circumferential transmission twist plane 14a arranged in a circumferential direction, the transmission wheel The number of peripheral torsion planes is one or two or more in the same plane or parallel to each other, and each of the transmission wheel rotation fit outer curved surfaces is respectively formed by a respective forming curve perpendicular to the outer peripheral twisting plane 14a of the transmission wheel. A portion of the corresponding curved surface formed by the rotation of the first rotation axis Y, each of the transmission wheel outer peripheral torsion planes 14a is a portion of a corresponding plane formed by the respective forming straight lines rotating about the first rotation axis Y. That is to say, the first rotary axis Y may not even penetrate the transmission wheel body, as long as the corresponding curved surface and the torsion plane of the outer circumferential surface of the transmission wheel are rotationally formed.

Preferably, the first rotation axis Y penetrates the transmission wheel body, and the two intersection points of the first rotation axis Y and the outer circumferential surface of the transmission wheel body are both the first rotation axis Y and the corresponding The drive wheel rotates Cooperating with the intersection point of the outer curved surface; the outer peripheral surface of the transmission wheel wheel body is respectively formed with a transmission wheel rotation limit step surface 16a in a region intersecting the first rotation axis, and each of the transmission wheel rotation limit step faces 16a It is not parallel with the outer peripheral transmitting torsion plane 14a of the transmission wheel, and preferably perpendicular to each other, for example, the manner in which the transmission wheel rotation limiting step surface 16a shown in FIGS. 2 to 9 described above is formed.

Further, the present invention provides a mating wheel for the above-described transmission wheel, the mating wheel includes a hollow mating wheel body, wherein the inner peripheral surface of the mating wheel body includes a mating wheel in a circumferentially arranged rotational fit a curved surface and a mating wheel inner circumferential twisting plane 14b, the mating wheel body can be used to assemble the driving wheel wheel body, and the mating wheel rotating fit inner curved surface and the mating wheel inner peripheral twisting plane 14b respectively can correspondingly The rotationally engaging outer curved surface of the drive wheel cooperates with the outer peripheral transmitting and twisting plane 14a of the transmission wheel to enable the engaging wheel to rotate relative to the transmission wheel about the first rotational axis Y by mutual cooperation. For example, it is possible to participate in the mating wheel as the intermediate guide member 6 shown in Figs. 2 to 5 . It should be noted here that in FIG. 2, whether it is the first intermediate guide wheel 2, the second intermediate guide wheel 5, or the intermediate guide wheel member connected by the first intermediate guide wheel 2 and the second intermediate guide wheel 5 7, the actual are within the protection range of the above-mentioned matching wheel.

The mating wheel may only constitute a first stage fit with the drive wheel, but more preferably, the outer peripheral surface of the mating wheel is correspondingly shaped to further cooperate with the secondary wheel described below. Specifically, as described above, the outer peripheral surface of the mating wheel body includes a mating wheel rotationally fitted outer curved surface and a mating wheel outer peripheral twisting plane 15a arranged in a circumferential direction, and the number of the outer peripheral transmitting twisting planes 15a of the mating wheel is one Or two or more in the same plane or parallel to each other, and the angle between the outer peripheral transmitting and twisting plane 15a of the mating wheel and the inner peripheral transmitting and twisting plane 14b of the mating wheel, respectively, the rotation of the mating wheel and the outer curved surface respectively And a part of the corresponding curved surface formed by the respective forming curves around the second rotation axis X perpendicular to the outer peripheral transmitting and twisting plane 15a of the mating wheel, and each of the mating wheel outer peripheral transmitting and twisting planes 15a is a respective forming straight line winding A portion of the corresponding plane formed by the rotation of the second axis of revolution X.

Preferably, for ease of assembly, the mating wheel includes a first mating wheel member and a second mating wheel member that are detachably coupled to each other along a thickness direction of the mating wheel. For example, the intermediate guide member 6 as a specific form of the mating wheel in Fig. 2 is split into a first intermediate guide wheel 2 and a second intermediate guide wheel 5. If desired, the first intermediate guide wheel 2 and the second intermediate guide wheel 5 can be further divided, regardless of how they are split, and the respective divided wheel members are within the protection range of the mating wheel of the present invention.

In order to form a secondary fit with the mating wheel, as described above, the present invention also provides a secondary wheel for mating with the mating wheel, the secondary wheel comprising a hollow secondary wheel body, wherein An inner peripheral surface of the secondary wheel body includes a circumferentially disposed secondary wheel swivel inner curved surface and a secondary inner peripheral inner twisting plane 15b, the secondary wheel body being capable of being used to assemble the mating wheel body And the secondary wheel rotates to match the inner curved surface and the inner circumference of the secondary wheel The face 15b can respectively cooperate with the mating wheel rotation fit outer curved surface and the mating wheel outer peripheral twisting plane 15a to enable the secondary wheel to be engaged with the second pivot axis X relative to the fit by mutual cooperation The wheel turns.

Likewise, the secondary wheel may include a first secondary wheel member and a second secondary wheel member that are detachably coupled to each other in the thickness direction of the secondary wheel. For example, in Fig. 2, a specific type of friction wheel member 7 as a secondary wheel is split into a first friction wheel 1 and a second friction wheel 4. If desired, the first friction wheel 1 and the second friction wheel 4 can be further divided, regardless of how they are split, and the respective divided wheel members are within the protection range of the mating wheel of the present invention.

As a specific application of the present invention, as shown in FIGS. 2 to 5, although described above, the present invention also provides an automatic adjustment type friction wheel, wherein the self-adjusting friction wheel includes The guide wheel 1 is the transmission wheel of the above embodiment; the intermediate guide wheel member 6 can be the mating wheel of the above-described embodiment, and the transmission wheel wheel body is assembled in the Cooperating with the wheel body, and the mating wheel rotation fit inner curved surface and the mating wheel inner peripheral twisting plane 14b respectively correspondingly cooperate with the transmission wheel rotating outer curved surface and the transmission wheel outer peripheral twisting plane 14a to cooperate with each other The engaging wheel is rotatable relative to the transmission wheel about the first axis of revolution Y; the friction wheel member is a secondary wheel formed as a friction surface 34 on the outer circumferential surface, the matching wheel The body is assembled in the secondary wheel body, and the secondary wheel rotation fit inner curved surface and the secondary wheel inner circumferential twisting plane 15b respectively rotate and cooperate with the matching wheel And the outer periphery of the wheel 15a with the transfer plane with torsion, such that the secondary wheel to be rotatable about the second pivot axis X with respect to said wheel to rotate by cooperating with.

Preferably, for ease of assembly, as described above, the intermediate guide member 6 may include a first intermediate guide 2 and a second intermediate guide 5 that are detachably coupled to each other in the thickness direction of the intermediate guide member; The friction wheel member 7 may include a first friction wheel 3 and a second friction wheel 4 that are detachably coupled to each other in the thickness direction of the friction wheel member.

As described above, as a preferred form, the outer peripheral surface of the transmission wheel body is further formed with a transmission wheel rotation limiting step surface 16a, wherein the first rotation axis Y runs through the transmission wheel wheel body, and The intersection point of the first rotation axis Y and the outer circumferential surface of the transmission wheel body is the intersection point of the first rotation axis Y and the corresponding rotation surface of the transmission wheel, the transmission wheel wheel body The outer peripheral surface is respectively formed with the transmission wheel rotation limit step surface 16a in a region intersecting the first rotation axis, and each of the transmission wheel rotation limit step surface 16a and the transmission wheel outer circumference transmission twist plane 14a are not Parallel (preferably perpendicular to each other, such as the preferred embodiment shown in Figure 8 being perpendicular to each other). The inner circumferential surface of the mating wheel body is formed with a mating wheel inner circumference rotation limit step surface 16b corresponding to each of the transmission wheel rotation limit step surfaces 16a, and the assembly can make each of the transmission wheel rotation limit The inner circumferential rotation limit step surface 16b of the mating wheel corresponding to the step surface 16a corresponds to each other, that is, initially in a state of being opposed and spaced, and each of the mating wheel inner circumference rotation limit step surfaces 16b is opposite to the mating wheel body When the transmission wheel wheel body rotates to a predetermined position, it can contact the corresponding transmission wheel rotation limit step surface 16a to restrict the rotation of the cooperation wheel body to avoid excessive rotation.

Similarly, the outer peripheral surface of the mating wheel body may be formed with a mating wheel outer circumference rotation limiting step surface 17a, wherein the second rotation axis X extends through the mating wheel body, and the second rotation axis X The two intersection points with the outer peripheral surface of the mating wheel body are the intersections of the second swivel axis X and the corresponding outer surface of the mating wheel, and the outer peripheral surface of the mating wheel body is The area where the second rotation axes intersect is respectively formed with the mating wheel outer circumference rotation limit step surface 17a, and each of the mating wheel outer circumference rotation limit step surfaces 17a is not parallel with the mating wheel outer circumference twisting plane 15a (preferably The ground is perpendicular to each other, for example, perpendicular to each other in the embodiment shown in FIG. 2; the inner peripheral surface of the secondary wheel body is formed with a secondary corresponding to each of the mating wheel outer peripheral rotation limit step faces 17a. The wheel rotation limit step surface 17b can be configured to make the inner circumference rotation limit step surface 16b of each of the transmission wheel rotation limit step surfaces 16a corresponding to each other, that is, the initial position Relatively and in a spaced state, each of the secondary wheel rotation limit step faces 17b is capable of contacting the corresponding engagement wheel outer circumference rotation limit step surface 17a when the secondary wheel body is rotated to a predetermined position with respect to the engagement wheel body To limit the rotation of the secondary wheel body to avoid excessive rotation.

In addition, in addition to the above technical solution of the self-adjusting friction wheel, the present invention further provides a drum apparatus including a drum and a drive shaft, wherein the drum apparatus further includes the above-mentioned automatic adjustment type friction wheel, The drive shaft is coupled to the guide wheel 1 to be capable of driving the guide wheel to rotate, and an outer circumferential surface or an inner circumferential surface of the roller is in contact with the outer circumferential friction surface 34 of the friction wheel member 7 to pass the friction wheel member 7 The rotation of the drum drives the drum to rotate. Typically, the inner circumferential surface of the drying drum of the drying drum device is in contact with the outer circumferential friction surface 34 of the friction wheel member 7.

As can be seen from the above description, the present invention has the advantages that: the transmission wheel of the present invention and the mating wheel cooperate therewith, because the outer circumferential surface of the transmission wheel and the inner circumferential surface of the engagement wheel cooperate with each other, and the rotation of the respective wheel member matches the curved surface and the twisted surface The planes are all part of the curved surface and the plane formed by the corresponding forming curve and the straight line around the same turning axis perpendicular to the twisting plane (ie, the first turning axis), so after the transmission wheel and the mating wheel are assembled, during the transmission process The mating wheel is rotatable relative to the drive wheel about the first axis of revolution so as to have a degree of rotational freedom in one direction to enable position adjustment during the transmission; based on the same principle, when the mating wheel is further mated with the secondary wheel The secondary wheel is also rotatable relative to the mating wheel about the second pivot axis during the transmission process, since the first pivot axis does not coincide with the second pivot axis (ie, the mating wheel outer peripheral twisting plane cooperates with the fit The inner circumference of the wheel has an angle between the twisting planes. When the transmission wheel, the mating wheel and the secondary wheel form a secondary fit, assembly The resulting drive wheel assembly actually has a rotational freedom in both directions. Therefore, the interfitting wheel member provided by the present invention breaks through the structure of the conventional single transmission wheel, and the assembled transmission wheel assembly is arranged by the mutual cooperation of two or more wheel members. While the torque can be reliably transmitted, the position adjustment during the transmission process can be realized by the rotation of the mutually cooperating wheel members without affecting the other degrees of freedom of the torque transmission, so that a more efficient transmission can be realized according to the actual situation in the transmission process.

In particular, in the self-adjusting friction wheel of the present invention, the two-layer fit is formed by the transmission wheel, the engagement wheel of the engagement wheel and the secondary wheel, the intermediate guide wheel and the friction wheel, which have two overalls. The rotational freedom of the direction, so the self-adjusting friction wheel has an automatic position adjustment function, which can adjust the positional relationship with the driven member (for example, the drying drum), so that the drum transmission device does not need to be repeatedly and accurately performed during the installation process. Adjustments save installation costs and simplify installation. At the same time, since the self-adjusting friction wheel has a position adjustment function, the positional relationship with the driven member (for example, the drum) can be relatively self-adjusted, so that the driven member can be automatically adapted relatively efficiently during operation, such as a roller. Geometrical errors due to thermal deformation and stress deformation reduce wear and noise, thereby improving work performance.

The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details of the above embodiments, and various simple modifications of the technical solutions of the present invention may be made within the scope of the technical idea of the present invention. These simple variations are within the scope of the invention.

It should be further noted that the specific technical features described in the above specific embodiments may be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the invention may not be further described in various possible combinations.

In addition, any combination of various embodiments of the invention may be made, as long as it does not deviate from the idea of the invention, and it should be regarded as the disclosure of the invention.

Claims

Rights request

1. A transmission wheel, including a transmission wheel body, wherein the outer peripheral surface of the transmission wheel body includes a transmission wheel rotation matching outer curved surface and a transmission wheel outer circumferential torsion transmission plane (14a) arranged in the circumferential direction, the transmission wheel The number of the torsion transmission planes on the outer circumference of the wheel is one or more than two that are on the same plane or parallel to each other. The rotation matching outer curved surfaces of each of the transmission wheels are respectively formed curves around the torsion transmission plane on the outer circumference of the transmission wheel (14a). A part of the corresponding curved surface formed by the rotation of the perpendicular first axis of rotation (Y). The outer circumferential torsion transmission plane (14a) of each transmission wheel is formed by the rotation of its respective straight line around the first axis of rotation (Y). part of the corresponding plane.

2. The transmission wheel according to claim 1, wherein the first rotation axis (Y) passes through the transmission wheel body, and the first rotation axis (Y) is in contact with the outer peripheral surface of the transmission wheel body. The two intersection points are the intersection points of the first rotation axis (Y) and the corresponding rotation matching outer curved surface of the transmission wheel; the outer peripheral surface of the transmission wheel body is at the intersection point with the first rotation axis A transmission wheel rotation limiting step surface (16a) is formed in each area, and each transmission wheel rotation limiting step surface (16a) is not parallel to the transmission wheel outer circumferential torsion transmission plane (14a).

3. The transmission wheel according to claim 2, wherein the rotation limiting step surface (16a) of each transmission wheel is perpendicular to the outer circumferential torsion transmission plane (14a) of the transmission wheel.

4. The transmission wheel according to claim 3, wherein the shaped curve and the straight line of the outer peripheral surface of the transmission wheel body include a first elliptical arc (A) that is sequentially connected as a closed ring and is in the same plane. ), the first arc line (B), the first straight line, the second elliptical arc line (C), the second arc line (D) and the second straight line;

The first elliptical arc (A), the first circular arc (B), the second elliptical arc (C) and the second circular arc (D) are concentric, and the first elliptical arc (A) and the second elliptical arc line (C) are respectively a quarter elliptical arc line, and the first arc line (B) and the second arc line (D) are respectively a quarter arc line and have equal radii. ; The first axis of rotation (Y) is perpendicular to the first straight line and the second straight line, and passes through the centers of the first arc line (B) and the second arc line (D), so that the The first outer ellipsoidal surface portion (20) of the transmission wheel formed by rotating the first elliptical arc line (A) and the first circular arc line (B) respectively around the first axis of rotation (Y) and the first outer circle of the transmission wheel The connecting portion between the spherical portions (18) is formed with a rotation limiting step surface (16a) of the transmission wheel, and the second elliptical arc line (C) and the second circular arc line (D) respectively surround the first Another rotation limit step of the transmission wheel is formed at the connecting portion between the second outer ellipsoidal surface portion (21) of the transmission wheel formed by the rotation of the rotation axis (Y) and the second outer spherical surface portion (19) of the transmission wheel. Face (16a).

5. The transmission wheel according to claim 3, wherein the shaped curve and the shaped straight line of the outer peripheral surface of the transmission wheel body include a first parabola segment, a first parabola segment and a first parabola segment that are connected in sequence as a closed ring and are in the same plane. Arc line (B), first straight line, second parabola segment, second arc line (D) and second straight line;

The first arc line (B) and the second arc line (D) are concentric and symmetrical with respect to the center of the circle, and are respectively quarter arc lines; the first parabola segment and the second parabola segment are relative to The centers of the first arc line (B) and the second arc line (D) are symmetrical; and the first straight line and the second straight line are along the first arc line (B) and the second arc line The radial extension of line (D); the first axis of rotation (Y) is perpendicular to the first straight line and the second straight line, and passes through the first arc line (B) and the second arc line ( The center of the circle of D), so that the first parabolic segment and the first arc line (B) rotate around the first axis of rotation to form the first parabolic curved portion of the transmission wheel and the first spherical portion of the transmission wheel ( 18) is formed with a rotation limiting step surface (16a) of the transmission wheel, and the second parabola segment and the second arc line (D) are formed by rotating around the first axis of rotation respectively. Another said transmission wheel rotation limiting step surface (16a) is formed at the connecting portion between the second parabolic surface portion of the transmission wheel and the second outer spherical surface portion (19) of the transmission wheel.

6. A matching wheel, which is used to cooperate with the transmission wheel according to claim 1, the matching wheel includes a hollow matching wheel body, wherein the inner peripheral surface of the matching wheel body includes: The arranged matching wheel rotates to match the inner curved surface and the matching wheel inner peripheral torsion transmission plane (14b), the matching wheel body can be used to assemble the transmission wheel body, and the matching wheel rotates to match the inner curved surface and the matching wheel inner circumference. The circumferential torsion transmission plane (14b) can correspondingly cooperate with the rotation matching outer curved surface of the transmission wheel and the transmission wheel outer circumference torsion transmission plane (14a), so that the matching wheel can rotate around the first rotation axis through mutual cooperation. (Y) rotates relative to the transmission wheel.

7. The matching wheel according to claim 6, wherein a driving structure for driving the driven member is formed on the outer peripheral surface of the matching wheel.

8. The matching wheel according to claim 7, wherein the outer peripheral surface of the matching wheel is formed as a friction surface (34) as the driving structure.

9. The matching wheel according to claim 6, wherein the outer peripheral surface of the matching wheel body includes a The arranged matching wheel rotation matching outer curved surface and the matching wheel outer circumferential torsion transmission plane (15a), the number of the matching wheel outer circumferential torsion transmission plane (15a) is one or more than two in the same plane or parallel to each other, and the said There is an included angle between the outer circumferential torsion transmission plane (15a) of the mating wheel and the inner circumferential torsion transmitting plane (14b) of the mating wheel. The rotating mating outer curved surface of each mating wheel has its own forming curve around the outer periphery of the mating wheel. The torque transmission plane (15a) is part of the corresponding curved surface formed by the rotation of the second rotation axis (X) perpendicular to the outer circumference of each matching wheel. The torque transmission plane (15a) on the outer periphery of each matching wheel is a straight line formed around the second rotation axis (X). X) Part of the corresponding plane formed by the rotation.

10. The matching wheel according to claim 9, wherein the outer circumferential torque transmission plane (15a) of the matching wheel and the inner circumferential torque transmission plane (14b) of the matching wheel are perpendicular to each other.

11. The matching wheel according to any one of claims 6 to 10, wherein the matching wheel includes a first matching wheel component and a second matching wheel component detachably connected to each other along the thickness direction of the matching wheel.

12. A secondary wheel used to cooperate with the matching wheel according to claim 9 or 10, the secondary wheel includes a hollow secondary wheel body, wherein the inner surface of the secondary wheel body The peripheral surface includes a secondary wheel rotation matching inner curved surface and a secondary wheel inner circumferential torsion transmission plane (15b) arranged in the circumferential direction, the secondary wheel body can be used to assemble the matching wheel body, and the secondary wheel body can be used to assemble the matching wheel body. The primary wheel rotation matching inner curved surface and the secondary wheel inner circumferential torsion transmission plane (15b) can correspondingly cooperate with the matching wheel rotation matching outer curved surface and the matching wheel outer circumference torsion transmission plane (15a), so that all the rotations can be achieved through mutual cooperation. The secondary wheel is rotatable relative to the mating wheel about the second axis of rotation (X).

13. The secondary wheel according to claim 12, wherein a driving structure for driving the driven member is formed on the outer peripheral surface of the secondary wheel.

14. The secondary wheel according to claim 13, wherein the outer peripheral surface of the secondary wheel is formed as a friction surface (34) as the driving structure.

15. The secondary wheel according to any one of claims 12 to 14, wherein the secondary wheel includes a first secondary wheel member and a second secondary wheel member detachably connected to each other along the thickness direction of the secondary wheel. Grade wheel parts.

16. An automatically adjusting friction wheel, wherein the automatically adjusting friction wheel includes: The guide wheel (1) is the transmission wheel according to claim 1;

The intermediate guide wheel member (6) is the matching wheel according to claim 9 or 10, the transmission wheel body is assembled in the matching wheel body, and the matching wheel rotates The mating inner curved surface and the mating wheel inner circumference torsion transmission plane (14b) respectively cooperate with the transmission wheel rotation mating outer curved surface and the transmission wheel outer circumference torsion transmission plane (14a), so that the mating wheel can rotate around through mutual cooperation. The first axis of rotation (Y) rotates relative to the transmission wheel;

Friction wheel member, the friction wheel member is the secondary wheel according to claim 14, the matching wheel body is assembled in the secondary wheel body, and the secondary wheel rotates with the inner curved surface and the secondary wheel The inner circumferential twist-transmitting plane (15b) correspondingly cooperates with the outer curved surface of the mating wheel rotation and the mating wheel outer circumferential torsion-transmitting plane (15a), so that the secondary wheel can rotate around the second rotation through mutual cooperation. The axis (X) rotates relative to the mating wheel.

17. The self-adjusting friction wheel according to claim 16, wherein the intermediate guide wheel member (6) includes a first intermediate guide wheel (2) and a first intermediate guide wheel (2) that are detachably connected to each other along the thickness direction of the intermediate guide wheel member. The second intermediate guide wheel (5); the friction wheel member (7) includes a first friction wheel (3) and a second friction wheel (4) that are detachably connected to each other in the thickness direction of the friction wheel member.

18. The self-adjusting friction wheel according to claim 16 or 17, wherein a transmission wheel rotation limiting step surface (16a) is also formed on the outer peripheral surface of the transmission wheel body, wherein the first rotation axis (Y) penetrates the transmission wheel body, and the two intersection points of the first rotation axis (Y) and the outer peripheral surface of the transmission wheel body are both the first rotation axis (Y) and the corresponding all The intersection point of the outer curved surface of the rotation matching of the transmission wheel, the outer peripheral surface of the transmission wheel body is respectively formed with the rotation limiting step surface (16a) of the transmission wheel in the area that intersects with the first axis of rotation, each of the The transmission wheel rotation limit step surface (16a) is not parallel to the transmission wheel outer circumferential torsion transmission plane (14a);

The inner circumferential surface of the matching wheel body is formed with an inner circumferential rotation limiting step surface (16b) of the matching wheel corresponding to the rotation limiting step surface (16a) of each of the transmission wheels. The inner circumferential rotation of each matching wheel is The limiting step surface (16b) can contact the corresponding transmission wheel rotation limiting step surface (16a) when the matching wheel body rotates to a predetermined position relative to the transmission wheel body to limit the matching wheel. The wheel continues to turn.

19. The self-adjusting friction wheel according to claim 18, wherein the shaped curve and the shaped straight line of the outer peripheral surface of the transmission wheel body include a first elliptical arc that is sequentially connected as a closed ring and is in the same plane. Wire (A), the first arc line (B), the first straight line, the second elliptical arc line (C), the second arc line (D) and the second straight line; the first elliptical arc line (A) , the first arc line (B), the second elliptical arc line (C) and the second arc line (D) are concentric, and the first elliptical arc line (A) and the second elliptical arc line (C) are respectively is a quarter elliptical arc, and the first arc line (B) and the second arc line (D) are respectively a quarter arc line and have equal radii; the first axis of rotation (Y) Perpendicular to the first straight line and the second straight line, and passing through the centers of the first arc line (B) and the second arc line (D), so that the first elliptical arc line (A) and the second arc line The connecting portion between the first outer ellipsoidal surface portion (20) of the transmission wheel and the first outer spherical surface portion (18) of the transmission wheel formed by an arc line (B) respectively rotating around the first axis of rotation (Y) A rotation limiting step surface (16a) of the transmission wheel is formed, and the second elliptical arc line (C) and the second circular arc line (D) are formed by rotating around the first rotation axis (Y) respectively. Another transmission wheel rotation limiting step surface (16a) is formed at the connecting portion between the second outer ellipsoidal surface portion (21) of the transmission wheel and the second outer spherical surface portion (19) of the transmission wheel.

20. The self-adjusting friction wheel according to claim 18, wherein the shaped curve and the shaped straight line of the outer peripheral surface of the transmission wheel body include a first parabola segment that is sequentially connected as a closed ring and is in the same plane. , the first arc line (B), the first straight line, the second parabola segment, the second arc line (D) and the second straight line;

The first arc line (B) and the second arc line (D) are concentric and symmetrical with respect to the center of the circle, and are respectively quarter arc lines; the first parabola segment and the second parabola segment are relative to The centers of the first arc line (B) and the second arc line (D) are symmetrical; and the first straight line and the second straight line are along the first arc line (B) and the second arc line The radial extension of line (D); the first axis of rotation (Y) is perpendicular to the first straight line and the second straight line, and passes through the first arc line (B) and the second arc line ( D) the center of the circle, so that the first parabola segment and the first arc line

(B) The connecting portion between the first parabolic surface of the transmission wheel and the first outer spherical surface of the transmission wheel (18) formed by rotating around the first axis of rotation respectively has a rotation limit step for the transmission wheel. Surface (16a), the second parabolic segment and the second arc line (D) are respectively formed by rotating around the first axis of rotation to form a second parabolic curved portion of the transmission wheel and a second spherical portion of the transmission wheel (19 ) is formed with another rotation limiting step surface (16a) of the transmission wheel.

21. The self-adjusting friction wheel according to claim 16 or 17, wherein the outer peripheral surface of the matching wheel body is also formed with a matching wheel outer peripheral rotation limiting step surface (17a), wherein the second rotation The axis (X) runs through the mating wheel body, and the second rotation axis (X) intersects with the two intersection points of the outer peripheral surface of the mating wheel body. are the intersection points of the second axis of rotation (X) and the corresponding outer curved surface of the rotation of the matching wheel. The outer peripheral surface of the matching wheel body is respectively formed in the area where it intersects with the second axis of rotation. The outer circumferential rotation limiting step surface (17a) of the matching wheel is not parallel to the outer circumferential torsion transmission plane (15a) of each matching wheel;

The inner peripheral surface of the secondary wheel body is formed with a secondary wheel rotation limiting step surface (17b) corresponding to the outer peripheral rotation limiting step surface (17a) of each of the matching wheels. Each of the secondary wheels rotates When the secondary wheel body rotates to a predetermined position relative to the mating wheel body, the limiting step surface (17b) can contact the corresponding mating wheel outer peripheral rotation limiting step surface (17a) to limit the The secondary wheel body continues to rotate.

22. The self-adjusting friction wheel according to claim 21, wherein the shaped curve and the shaped straight line of the outer peripheral surface of the matching wheel body include a first elliptical arc that is sequentially connected as a closed ring and is in the same plane. line, first arc line, first straight line, second elliptical arc line, second arc line and second straight line;

The first elliptical arc, the first circular arc, the second elliptical arc and the second circular arc are concentric, and the first elliptical arc and the second elliptical arc are quarter elliptical arcs respectively. , the first arc line and the second arc line are quarter arc lines and have equal radii respectively; the second axis of rotation (X) is perpendicular to the first straight line and the second straight line, and Through the center of the first arc line and the second arc line, the first elliptical arc line and the first arc line rotate around the second axis of rotation (X) to form a first matching wheel. The connecting portion between the outer ellipsoidal surface (27) and the first outer spherical surface (26) of the matching wheel forms a peripheral rotation limiting step surface (17a) of the matching wheel. The second elliptical arc and the third The connection part between the second outer ellipsoidal surface part (29) of the matching wheel formed by rotating the two arc lines around the second axis of rotation (X) and the second outer spherical surface part (28) of the matching wheel forms another One of the outer peripheral rotation limiting step surfaces (17a) of the matching wheel.

23. The self-adjusting friction wheel according to claim 18, wherein the shaped curve and the straight line of the outer peripheral surface of the matching wheel body include first parabola segments that are sequentially connected as a closed ring and are in the same plane. , the first arc line, the first straight line, the second parabola segment, the second arc line and the second straight line;

The first arc line and the second arc line are concentric and symmetrical with respect to the center of the circle, and are respectively quarter arc lines; the first parabola segment and the second parabola segment are relative to the first arc The center of the line and the second arc line are symmetrical; and the first straight line and the second straight line extend along the radial direction of the first arc line and the second arc line; the second axis of rotation (X) A circle perpendicular to the first straight line and the second straight line and passing through the first arc line and the second arc line center, so that the connection between the first parabolic surface of the matching wheel and the first outer spherical surface of the matching wheel (26) formed by rotating the first parabola segment and the first arc line around the first axis of rotation respectively A rotation limiting step surface (17a) is formed on the outer circumference of the matching wheel. The second parabolic segment and the second arc line are respectively rotated around the second axis of rotation to form a second parabolic surface of the matching wheel. The connecting portion between the second outer spherical portions (28) of the matching wheel is formed with another outer circumferential rotation limiting step surface (17a) of the matching wheel.

24. A drum device, including a drum and a drive shaft, wherein the drum device further includes an automatically adjusting friction wheel according to any one of claims 16 to 23, and the drive shaft is connected to the guide wheel (1) To be able to drive the guide wheel to rotate, the outer peripheral surface or the inner peripheral surface of the roller is in contact with the outer peripheral friction surface (34) of the friction wheel member (7), so as to pass through the friction wheel member (7). The rotation drives the drum to rotate.