CN211039458U - Annular through shaft clutch cylinder - Google Patents

Abstract

The utility model discloses an annular leads to axle clutch cylinder, including a cylindrical hole cylinder body, an annular piston reaches rather than linking firmly integrative annular piston rod pipe, one or two annular cylinder heads that are used for sealing the piston chamber, a set of sealing washer, cylindrical hole cylinder body outer wall relevant position is opened has the business turn over that is used for driving piston reciprocating motion, give vent to anger or hydraulic fluid port, the one end or the both ends that link firmly integrative annular rod pipe with the piston have with by drive clutch element axial positioning's mechanism, when compressed air or hydraulic oil from advancing, give vent to anger or hydraulic fluid port get into the piston chamber, can realize clutch element's axial and push, pull reciprocating motion, and simultaneously, the cylindrical space of annular piston and rod pipe allows rather than coaxial drive shaft to pass. The utility model discloses can be used to in clutch, gearbox, transfer case, the power takeoff, replace traditional shift fork mechanism. The utility model discloses exert even circumference to clutch element and push away, pulling force, help smooth-going combination or separation.

Description

Annular through shaft clutch cylinder

Technical Field

The utility model belongs to the technical field of machine-building and automobile transmission system, especially, relate to a clutch cylinder that is used for various clutches, gearbox, transfer case, power takeoff, realizes that power combines or cuts off.

Background

With the continuous improvement of the civilization degree and the productivity level of the society, the mechanization degree requirement of various production operations is higher and higher, the social demand on the number and the types of special automobiles with the maneuvering operation capacity is increased, and the demand on power of different special automobiles is different, namely the power systems of the special automobiles are various. Furthermore, the types of clutches, gearboxes, power takeoff devices and transfer cases of the chassis power system of the special vehicle are required to be more and more, the functions are more and more complex, the performance is higher and higher, the realization of the function diversification of the transmission equipment depends on the clutch combination scientificity of the transmission elements, the realization of the performance improvement depends on the smoothness and reliability of the clutch of the elements, and the smoothness and reliability of the clutch elements are guaranteed to depend on the structure and the performance of the clutch driving elements. The common technical scheme at present is that a conventional double-acting or single-acting clutch cylinder or hydraulic cylinder is arranged on a box body in parallel with the axis of a driven clutch element, a clutch shifting fork is arranged on a piston rod of the clutch cylinder or the hydraulic cylinder, the finger-shaped front end of the clutch shifting fork extends into a circular groove of the driven clutch element, when the clutch cylinder or the hydraulic cylinder is operated to act, the piston rod drives the shifting fork to reciprocate, and the shifting fork drives the clutch element to move axially to be disengaged or engaged, so that the clutch conversion of a transmission system is realized. Although the technical scheme is generally applied, because the installation axis of the double-acting or single-acting clutch cylinder or the hydraulic oil cylinder is parallel to the moving axis of the clutch element but is not coincident with the moving axis of the clutch element, when the clutch element is operated and separated, the axial thrust or the pulling force acting on the clutch element generates bending moment through the shifting fork and acts on the piston rod of the double-acting or single-acting clutch cylinder or the hydraulic oil cylinder, so that the shifting fork and the piston rod generate deformation, the deformation changes the acting point of the shifting fork on the clutch element, the operating force applied to the clutch element is not the axial thrust or pulling force any more, but the oblique force intersected with the axis generates a radial force, the radial force can enable the clutch element and an engaged object to generate additional friction, the tendency of enabling the axes of the clutch element and the clutch element to be intersected is realized, particularly when the clutch cylinder or the oil cylinder is installed in a cantilever, the rigidity of the clutch cylinder is poorer, and the deformation is larger. Therefore, the traditional clutch mechanism with the shifting fork driven by the cylinder or the oil cylinder has obvious defects, and the produced consequences are unsmooth clutch, additional friction and abrasion caused by additional bending moment, shortened element service life, reduced reliability, noise generation, large occupied space and the like.

At present, the known new technical scheme that can make the axis of clutch cylinder or hydro-cylinder be on a parallel with clutch element is very few, and its usage differs from the utility model discloses a usage, has not seen the well-known improved generation axial operation clutch cylinder or hydro-cylinder to this usage yet. A ring piston type pneumatic clutch as described in "ring piston type pneumatic clutch" (CN93225275.3) is a clutch in which inner and outer friction plates rotating around the axis thereof are pressed or separated by pressure and displacement generated on a ring piston by the action of air pressure. A pneumatic clutch, also described in clutch cylinder axial pneumatic clutch (CN93237828.5), is similar to the annular piston type pneumatic clutch described above, in that it relies on pneumatic pressure on a piston, one face of which acts as a pressure plate against a double-sided friction plate engaged with the drive shaft to drive the pulley. Both of the above known solutions are directed to a rotating friction disc clutch and once engaged, the problem of leakage of the rotating sealed joint of the clutch cylinder must be solved, but they are not mentioned in the description.

It can be seen that, in the prior art, besides the defects of structure and performance, the usage and function of the device are different from those of the present invention.

Disclosure of Invention

An object of the utility model is to overcome the defect among the above-mentioned prior art, provide one kind its inner chamber can pass through axle type part, and the thrust direct action that clutch cylinder or hydro-cylinder produced is being controlled clutch element's axis direction, makes the direction of operating force coaxial completely with the moving direction, does not produce additional moment of flexure, is favorable to being controlled clutch element and steadily gets into or withdraw from the meshing.

In order to achieve the above object, the utility model adopts the following technical scheme: the utility model provides an annular leads to axle separation and reunion jar which characterized in that: the clutch cylinder comprises a cylinder body or a cylinder body integrated on a main box body, one or two annular cylinder heads used for determining the stroke of the clutch cylinder and sealing a piston cavity, an annular piston, an annular rod pipe fixedly connected with the annular piston, an annular piston cavity formed by the annular piston and a cylindrical central space, a group of sealing rings, and two air passages and two oil passages which are positioned on the cylinder body and lead to the two ends of the inner cavity of the cylinder body, wherein one end or two ends of the piston rod pipe are provided with structures used for driving an operated clutch element to axially move. The annular cylinder head, the annular piston and the rod pipe are coaxially arranged in the cylinder body, axial positioning is realized through a certain structure, the annular piston and the piston rod can axially move between the annular cylinder heads and have determined moving positions and strokes, when one of the two gas and oil passages is communicated with a compressed gas source or an oil source, the piston translates towards the other gas and oil passage under the action of air pressure or oil pressure, and when the other gas and oil passage is communicated with the compressed gas source or the oil source, the piston translates towards the opposite direction and simultaneously drives an operated clutch element connected with the piston rod pipe to coaxially reciprocate.

The annular through-shaft clutch is characterized by comprising a cylindrical inner hole cylinder body, an annular piston, an annular rod pipe fixedly connected with the annular piston into a whole, one or two annular cylinder heads used for determining the position of the clutch cylinder and sealing a piston cavity and a group of sealing rings, wherein the sealing rings are positioned in grooves of corresponding parts to realize static or dynamic sealing.

The annular through-shaft clutch is characterized in that the cylindrical inner-hole cylinder body can be an independent separating part to form an independent annular through-shaft clutch separated from a base body of the annular through-shaft clutch. Certainly, in some application occasions, the cylindrical inner hole cylinder body can be integrated with basic shells such as a clutch, a gearbox, a transfer case and a power takeoff, and the cylindrical inner hole cylinder body is only one functional structure of the basic shells, so that the number of parts is reduced, and the space is saved.

The annular through-shaft clutch is characterized in that the piston is annular and is coaxially and rigidly connected with a hollow pipe serving as a piston rod into a whole, the piston drives the piston rod to move together, and one end or two ends of the piston rod are provided with a structure for driving the controlled clutch element to move back and forth along the axis of the controlled clutch element, and the structure can transmit circular motion or not transmit the circular motion.

The annular through-shaft clutch is characterized in that the cylindrical space formed by the annular piston and the rod pipe is used for allowing a driving shaft or other parts and components coaxial with the driving shaft to pass through.

The annular through-shaft clutch is characterized in that two annular cylinder heads which are at a certain distance or one annular cylinder head which is arranged at the outer end of the cylindrical inner-hole cylinder body are arranged in the cylindrical inner-hole cylinder body, the inner-hole cylinder body structure is used for realizing axial positioning so as to determine the position and the action stroke of the clutch cylinder, the cylinder body, the annular cylinder heads, the annular piston and the rod pipe jointly form a coaxial annular closed cavity, and the annular piston and the rod pipe can reciprocate in the sealed cavity along the common axis of the annular piston and the rod pipe.

The annular through-shaft clutch is characterized in that the end part of the annular rod pipe is provided with one or more opening guide grooves, and one or more radial pin shafts arranged on the annular cylinder head or the cylinder barrel are inserted into the opening guide grooves to guide the axial reciprocating motion of the annular piston and limit the rotation of the annular piston along with the driven clutch element, because the clutch element starts to rotate after being engaged in many cases.

The annular through-shaft clutch is characterized in that a friction ring or a thrust bearing is arranged between the end part of the annular rod pipe and the driven clutch element so as to reduce the rotary friction and the abrasion between the annular piston rod end structure and the driven clutch element.

Compared with the prior art, the utility model has the following advantage:

1. the clutch acting force is coaxially applied to the controlled clutch element, and smooth clutch is facilitated.

2. The clutch acting force is applied to the whole circumferential end face of the controlled clutch element, so that additional bending moment is not generated, the fault is reduced, and the service life is prolonged.

3. High integration degree, high space utilization rate and compact structure.

Drawings

Fig. 1 is a right side view of a cross-sectional structure of an embodiment of the present invention.

Fig. 2 is a left side view of a cross-sectional structure of an embodiment of the present invention.

Description of the reference numerals

1-a cylinder body; 2-ring cylinder head 3-ring piston and rod tube

4-radial pin shaft 5-gas and oil passage and joint 6-friction ring or thrust bearing

7-Clutch element 8-clasp 9-clasp

10-sealing ring 11-sealing ring 12-central shaft

Detailed Description

Fig. 1 is a right side view of a cross-sectional structure of a preferred embodiment of the present invention. The cylinder body 1 is the basis of an annular through shaft clutch cylinder, can be a part with single function, can also be a part of a complex box body or even a structure, and is integrated in a basic box body. The inner hole of the cylinder is a step-shaped round hole, the outer end of the cylinder is provided with an annular cylinder head 2, an annular piston and a rod pipe 3 are arranged between the cylinder body 1 and the annular cylinder head 2, the annular piston and the rod pipe 3 are radially positioned through a sealing ring 10, the annular piston and the rod pipe 3 can only reciprocate in an annular cavity between the annular cylinder head 2 and the cylinder body 1, and the sealing ring 11 divides the annular cavity into two small cavities. The annular cylinder head 2 is internally provided with a radial pin shaft 4 in a radial hole, the radial pin shaft 4 is inserted into one or more open grooves at the outer end of the annular piston and rod pipe 3, one end of a clutch element 7 which is usually an internal or external spline meshing sleeve or a friction pressure plate is opposite to and coaxially inserted into the end part of the annular piston and rod pipe 3, a friction ring or a thrust bearing 6 is coaxially arranged at the inner side of the clutch element, the axial positioning is realized by a clamping ring 8, a certain axial clearance is reserved between the end part of the clutch element 7 and the end part of the annular piston and rod pipe 3, the friction ring or the thrust bearing 6 and the clamping ring 8, the relative rotation is allowed, but the axial movement follows the movement of the annular piston and rod pipe 3, a central shaft 12 is in key connection with the clutch element 7 and is used for transmitting torque and rotation, namely, the power on the central shaft 12 is transmitted to a power element meshed with the clutch element 7 or, thereby achieving the clutch operation.

In order to achieve the above object, the utility model adopts the following technical scheme: the utility model provides an annular leads to axle separation and reunion jar which characterized in that: the clutch device comprises a cylinder body 1 integrated on a main box body, one or two annular cylinder heads 2 used for determining the stroke of a clutch cylinder and sealing a piston cavity, an annular piston and rod pipe 3 and a group of sealing rings 10 and 11, wherein two air passages, oil passages and joints 5 which are communicated with two ends of an inner cavity of the cylinder body are arranged on the cylinder body 1, and one end or two ends of the annular piston and rod pipe 3 are provided with structures used for driving an operated clutch element 7 to axially move. The annular cylinder head 2, the annular piston and the rod pipe 3 are coaxially arranged in the cylinder body 1, axial positioning is achieved through a shaft clamping ring 8, the annular piston and the rod pipe 3 can axially move between the annular cylinder heads 2 or between the annular cylinder head 2 and the cylinder body 1, and have determined moving positions and strokes, when a compressed air source or an oil source is connected through one of the two air passages, the oil passages and the joint 5, the annular piston and the rod pipe 3 move in the direction of the other air passage or the other oil passage under the action of air pressure or oil pressure, and as shown in figure 1. When the other air, oil passage and joint 5 is connected with a compressed air source or an oil source, the annular piston and the rod pipe 3 translate in the opposite direction, as shown in fig. 2, and simultaneously drive the controlled clutch element 7 connected with the annular piston and the rod pipe 3 to coaxially reciprocate.

The annular through-shaft clutch is characterized in that the cylindrical cylinder body 1 is integrated in basic shells such as a clutch, a gearbox, a transfer case and a power takeoff, is only a functional structure of the basic shells, and can form a clutch which is completely fused in the basic shells. Of course, in some applications the cylindrical bore cylinder 1 may be a separate component forming a separate annular through-shaft clutch which is separable from the base.

The annular through-shaft clutch is characterized in that the annular piston and the rod pipe 3 are fixedly connected into a whole by the annular piston and a hollow pipe coaxially to form a hollow piston rod which can penetrate through the annular piston and the rod pipe of the piston is in rigid linkage with the piston. The cylinder body 1, the annular cylinder head 2 and the annular piston and rod pipe 3 jointly form a coaxial annular closed cavity, and the annular piston and rod pipe 3 can reciprocate in the sealed cavity along the common axis.

The annular through-shaft clutch is characterized in that the cylindrical space formed by the annular piston and the rod pipe 3 is used for allowing a central shaft 12 or other parts and components coaxial with the central shaft to pass through.

The annular through-shaft clutch is characterized in that one end or two ends of the annular piston and the rod pipe 3 are provided with structures for driving the operated clutch element 7 to reciprocate along the axis, namely, the annular piston and the rod pipe output reciprocating motion along the axis direction when a compressed air source or a pressure oil source is introduced through an air passage, an oil passage and the joint 5.

The annular through-shaft clutch is characterized in that the end part of the annular piston and rod tube 3 is provided with one or more opening guide grooves, and one or more radial pin shafts 4 arranged on the annular cylinder head 2 or the cylinder body 1 are inserted into the opening guide grooves to guide the axial reciprocating motion of the annular piston and rod tube 3 and limit the annular piston and rod tube 3 to rotate along with a driven clutch element 7.

The annular through-shaft clutch is characterized in that a friction ring or a thrust bearing 6 is arranged between the end part of the annular piston and rod tube 3 and the driven clutch element 7 so as to reduce the rotation friction and the abrasion between the end part structure of the annular piston and rod tube 3 and the driven clutch element 7.

To sum up, the utility model discloses can not only make devices such as mechanical power gearbox, power takeoff, clutch realize the combination of power or cut off, apply to the operating force that is driven on the clutch element moreover rather than the moving direction is coaxial completely, the additional moment of flexure that produces when having eliminated traditional parallel shaft separation and reunion jar and having passed through shift fork manipulation clutch element is favorable to the clutch element to get into the meshing smoothly or withdraw from the meshing, has improved separation and reunion reliability, and simultaneously, has reduced impact, wearing and tearing, has prolonged life.

The above, only be the utility model discloses a best embodiment, it is not right the utility model discloses do any restriction, all according to the utility model discloses any simple modification, change and equivalent structure transform of technical essence to what the above embodiment was done all still belong to the utility model discloses technical scheme's within range of protection.

Claims (7)

1. The annular through shaft clutch cylinder is characterized by comprising a cylinder body with a cylindrical inner hole, an annular piston, an annular rod pipe fixedly connected with the annular piston into a whole, one or two annular cylinder heads and a group of sealing rings, wherein the annular cylinder heads, the annular piston and the rod pipe are coaxially arranged in the cylinder body, and the annular piston and a piston rod can axially move between the annular cylinder heads.

2. The annular through-shaft clutch cylinder as claimed in claim 1, wherein the cylindrical bore cylinder is a separate part or a functional structure of a basic housing of a clutch, a transmission case, a transfer case and a power takeoff, i.e. the cylindrical bore cylinder and the basic housing are combined into a whole.

3. The annular through-shaft clutch cylinder of claim 1, wherein the piston is annular and is coaxially secured to a hollow tube.

4. An annular through-shaft clutch cylinder according to claim 1 or 3, characterized in that the central cylindrical space formed by the annular piston and the rod tube is used for passing through a driving shaft coaxial with the annular piston and the rod tube.

5. An annular through-shaft clutch cylinder according to claim 1, 2 or 3, characterized in that two annular cylinder heads at a distance from each other are arranged in the cylindrical bore cylinder to form a closed piston chamber with the annular piston and the rod tube, or that only one annular cylinder head arranged at the outer end of the cylindrical bore cylinder forms a closed piston chamber with the annular piston and the rod tube.

6. An annular through-shaft clutch cylinder according to claim 1 or 3, characterized in that the annular piston and the end of the rod pipe are provided with one or more open guide grooves, and one or more radial pins mounted on the outer end of the cylindrical bore cylinder body or the annular cylinder head are inserted into the open guide grooves to guide the axial reciprocating movement of the annular piston and limit the rotation of the piston with the driven clutch element.

7. The annular through-shaft clutch cylinder of claim 1, wherein a friction ring or thrust bearing is disposed between the annular piston and rod tube end and the driven clutch element to reduce rotational friction and wear between the annular piston and rod tube end structure and the driven clutch element.

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