Clutch and working machine

Abstract

The utility model belongs to the technical field of vehicle engineering and provides a clutch and an operation machine.The clutch comprises a transmission hub frame and a friction plate set, the transmission hub frame comprises an inner hub and an outer hub which are arranged at intervals in the radial direction, and the friction plate set comprises a first plate set arranged on the outer hub and a second plate set arranged on the inner hub; outer elastic pieces used for being elastically expanded in the axial direction are arranged between the friction pieces in the first piece set, inner elastic pieces used for being elastically expanded in the axial direction are arranged between the friction pieces in the second piece set, and the friction pieces in the inner connecting piece set and the friction pieces in the outer connecting piece set are matched in an inserted mode and distributed alternately. The elastic pieces are arranged in the two sheet groups, so that the first sheet group and the second sheet group can be separated thoroughly when the clutch is separated.

Description

TECHNICAL FIELD

[0001] The utility model belongs to vehicle engineering technical field, concretely relates to a clutch and operation machine. BACKGROUND

[0002] The clutch is a key component in the mechanical transmission system, and its main function is to cut off the power transmission when needed to facilitate the gear shifting operation of the system. The clutch power cut-off control is mainly realized by the engagement and separation of the friction plate group in the clutch. In the existing clutch, the position of the friction plate group is difficult to guarantee every time it is separated, and sometimes part of the friction plate group in the friction plate group may not be separated completely, resulting in the rotation of the clutch with the row, and the system has additional power loss. SUMMARY

[0003] In view of the above defects or deficiencies, the utility model provides a clutch and operation machine, aiming at solving the technical problem that the existing clutch is easy to work with the row.

[0004] To achieve the above purpose, the utility model provides a clutch, wherein the clutch comprises a transmission hub frame and a friction plate group, the transmission hub frame comprises an inner hub and an outer hub arranged radially at intervals, the friction plate group comprises a first plate group arranged on the outer hub and a second plate group arranged on the inner hub, an elastic member for elastically straining the outer elastic member in the axial direction is arranged between the friction plates in the first plate group, an elastic member for elastically straining the inner elastic member in the axial direction is arranged between the friction plates in the second plate group, and the friction plates in the inner plate group and the friction plates in the outer plate group are inserted and alternately distributed.

[0005] In the embodiment of the utility model, the first plate group comprises a plurality of first friction plates extending in the radial direction and arranged axially at intervals in turn, a first interval slot is formed between any adjacent first friction plates, and an outer elastic member for straining the adjacent first friction plates in the axial direction is arranged in the first interval slot; the second plate group comprises a plurality of second friction plates extending in the radial direction and arranged axially at intervals in turn, a second interval slot is formed between any adjacent second friction plates, and an inner elastic member for straining the adjacent second friction plates in the axial direction is arranged in the second interval slot; wherein the plurality of first friction plates and the plurality of second friction plates are inserted and alternately distributed.

[0006] In the embodiment of the utility model, the axial spacing between any adjacent second friction plate and first friction plate is equal.

[0007] In the embodiment of the utility model, the inner hub comprises a hub body and two inner baffles arranged axially at intervals on the radial outer side of the hub body, a plurality of first mounting keys arranged at equal intervals in the axial direction are arranged between the two inner baffles, the second friction plates are installed one by one on the first mounting keys, and the inner elastic members are elastically supported between the adjacent second friction plates.

[0008] In the embodiment of the utility model, the inner elastic piece elastically abuts at the root of the inner end of the second friction plate.

[0009] In the embodiment of the utility model, the outer hub comprises an axial hub wall extending in the axial direction, the radially inner side of the axial hub wall is provided with a plurality of second installation keys arranged at equal intervals in the axial direction, the first friction plates are installed one by one on the second installation keys, and the outer elastic piece elastically abuts in the axial direction between adjacent first friction plates.

[0010] In the embodiment of the utility model, the outer elastic piece elastically abuts at the root of the radially outer end of the first friction plate.

[0011] In the embodiment of the utility model, the clutch further comprises a piston arranged between the inner hub and the outer hub, the piston is arranged adjacent to the friction plate set, and the piston is used for axially moving to push the first plate set and the second plate set in the friction plate set to engage.

[0012] In the embodiment of the utility model, the clutch further comprises a main shaft serving as a central shaft of the transmission hub frame, the outer hub is fixedly connected with the main shaft, the main shaft is further provided with an inner hub bearing, the inner hub bearing is provided with a limiting step, and the inner hub is installed on the inner hub bearing and limitingly matched with the limiting step.

[0013] To achieve the above object, the utility model further provides a working machine, wherein the working machine comprises the clutch according to the above.

[0014] Through the above technical scheme, the clutch provided in the embodiment of the utility model has the following beneficial effects:

[0015] By arranging the outer elastic piece between the friction plates of the first plate set, the relative spacing between the friction plates in the first plate set can be ensured after the friction plate set is separated, and by arranging the inner elastic piece between the friction plates of the second plate set, the relative spacing between the friction plates in the second plate set can be ensured after the friction plate set is separated. The spacing between the friction plates of each plate set is ensured, so that each friction plate can be reset to the posture of the specified gap arrangement under the action of the elastic piece when the clutch cuts off the power each time, and then it is ensured that all the friction plates are completely separated, there is no contact between the friction plates, there is no torque existing in the clutch, and there is no power loss in the transmission system.

[0016] Other features and advantages of the utility model will be described in detail in the following specific embodiment part. BRIEF DESCRIPTION OF DRAWINGS

[0017] The drawings are used to provide the understanding of the utility model, and constitute a part of the specification, and are used together with the following specific embodiment to explain the utility model, but do not constitute the limitation to the utility model. In the drawings:

[0018] Figure 1is a whole structure schematic view of the clutch according to the embodiment of the utility model;

[0019] Figure 2 is a structure schematic view when the friction plate group is inserted into the finger according to the embodiment of the utility model;

[0020] Figure 3 is the exploded structure schematic view of the friction plate group according to the embodiment of the utility model.

[0021] Mark explanation

[0022] 11, inner hub;111, hub body;112, inner hub mounting frame;113, inner hub bearing;114, inner baffle;12, outer hub;121, radial hub wall;122, axial hub wall;123, outer baffle;13, piston;14, friction plate group;141, first plate group;141-1, first friction plate;141-2, outer elastic member;142, second plate group;142-1, second friction plate;142-2, inner elastic member;1a, drive chamber;2, main shaft;2a, hollow oil channel;2b, bypass working oil channel;2c, bypass lubricating oil channel;3, oil plug assembly;31, plunger;32, plunger elastic member;33, plunger adjusting member. Specific implementation

[0023] The specific embodiments of the utility model are described in detail below in combination with the drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the utility model, and are not used to limit the utility model.

[0024] The clutch of the utility model is described below with reference to the drawings.

[0025] The utility model provides a kind of clutch, as shown in the embodiment in Figure 1 、 Figure 2 And Figure 3 , clutch includes transmission hub frame and friction plate group 14, transmission hub frame includes the inner hub 11 and outer hub 12 of radial interval arrangement.

[0026] The friction plate set 14 comprises a first plate set 141 arranged on the outer hub 12 and a second plate set 142 arranged on the inner hub 11, outer elastic members 141-2 are arranged between the friction plates in the first plate set 141 for elastically supporting the friction plates in the axial direction, inner elastic members 142-2 are arranged between the friction plates in the second plate set 142 for elastically supporting the friction plates in the axial direction, the interval between the friction plates in the first plate set 141 is maintained by the outer elastic members 141-2, the interval between the friction plates in the second plate set 142 is maintained by the inner elastic members 142-2, the first plate set 141 and the second plate set 142 are arranged in a comb shape, and the friction plates of the first plate set 141 and the friction plates of the second plate set 142 are arranged alternately in sequence after the first plate set 141 and the second plate set 142 are inserted into each other.

[0027] By arranging the outer elastic members 141-2 between the friction plates of the first plate set 141, the relative interval between the friction plates in the first plate set 141 can be maintained after the friction plate set 14 is separated, and by arranging the inner elastic members 142-2 between the friction plates of the second plate set 142, the relative interval between the friction plates in the second plate set 142 can be maintained after the friction plate set 14 is separated. The interval between the friction plates of each plate set is guaranteed, so that each friction plate can be reset to the specified gap under the action of the elastic member each time the clutch cuts off the power, thereby ensuring that all the friction plates are completely separated and there is no contact between the friction plates, the clutch has no residual torque, and the power transmission system has no power loss.

[0028] As shown in Figure 1 In the embodiment of the utility model, the first plate set 141 comprises a plurality of first friction plates 141-1 extending in the radial direction and spaced in the axial direction in sequence, first interval slots are formed between any adjacent first friction plates 141-1, the outer elastic members 141-2 for supporting the adjacent first friction plates 141-1 in the axial direction are arranged in the first interval slots, and the first interval slots are used for inserting the second friction plates 142-1 one by one.

[0029] The second plate set 142 comprises a plurality of second friction plates 142-1 extending in the radial direction and spaced in the axial direction in sequence, second interval slots are formed between any adjacent second friction plates 142-1, the inner elastic members 142-2 for supporting the adjacent second friction plates 142-1 in the axial direction are arranged in the second interval slots, and the second interval slots are used for inserting the first friction plates 141-1 one by one.

[0030] As shown in Figure 2 and Figure 3 The interlocking refers to that the first friction plates 141-1 and the second friction plates 142-1 are inserted into the interval slots of each other one by one, and after the interlocking is completed, the first friction plates 141-1 and the second friction plates 142-1 are arranged alternately in the order of first-second-first-second in the axial direction.

[0031] As Figure 1 shown, when the clutch is in normal operation, the oil drives the piston 13 between the outer hub 12 and the inner hub 11 to push the friction plate set 14, so that the second friction plate 142-1 and the first friction plate 141-1 are in contact, realizing the transmission of the inner hub 11 and the outer hub 12, when the clutch needs to be shifted and separated, the piston 13 resets, and the second friction plate 142-1 and the first friction plate 141-1 are reset to the specified gap arrangement under the action of the elastic member, so as to ensure that all the second friction plates 142-1 and the first friction plates 141-1 are separated. For the wet clutch, ensuring the complete separation of the second friction plate 142-1 and the first friction plate 141-1 can save the cooling lubricating oil required by the clutch belt row.

[0032] As Figure 2 and Figure 3 shown, in the embodiment of the utility model, after the first piece group 141 and the second piece group 142 are installed and matched in place, the axial spacing between any adjacent second friction plate 142-1 and first friction plate 141-1 is equal. As the thickness of the first friction plate 141-1 is λ1, the thickness of the second friction plate 142-1 is λ2, the gap between the adjacent two first friction plates 141-1 is Δ1, and the gap between the adjacent two second friction plates 142-1 is Δ2, then after the first piece group 141 and the second piece group 142 are installed in place, the installation relationship needs to satisfy (Δ1-λ2) / 2=(Δ2-λ1) / 2=δ, so as to ensure that the spacing is equal. By ensuring that the spacing is equal, the contact between the first friction plate 141-1 and the second friction plate 142-1 is seamless when the friction plate set 14 is engaged, the engagement friction is increased, and the engagement transmission efficiency of the clutch is ensured.

[0033] As Figure 1 , Figure 2 and Figure 3 shown, in the embodiment of the utility model, the inner hub 11 includes a hub body 111 and two inner baffles 114 axially spaced apart on the radial outer side of the hub body 111, a plurality of first installation keys are arranged axially equidistantly between the two inner baffles 114, the second friction plate 142-1 is installed one by one on the first installation key, and the inner elastic member 142-2 is elastically abutted between the adjacent second friction plates 142-1. Through the limiting of the first installation key and the two inner baffles 114, the position of each second friction plate 142-1 relative to the inner hub 11 can be ensured.

[0034] Similarly, the outer hub 12 comprises an axially extending axial hub wall 122, and an outer baffle 123 is arranged on the axial hub wall 122, and a plurality of second mounting keys are arranged axially equidistantly between the piston 13 and the outer baffle 123, and the first friction plate 141-1 is installed one by one on the second mounting key, and the outer elastic member 141-2 is elastically supported axially between adjacent first friction plates 141-1. Through the limiting of the piston 13 and the outer baffle 123, and through the limiting of the second mounting key to each first friction plate 141-1, the position of each first friction plate 141-1 relative to the position of the outer hub 12 can be ensured.

[0035] After the clutch is assembled, the position between the outer hub 12 and the inner hub 11 is fixed, and through the mounting keys and the baffles on the inner hub 11 and the outer hub 12, the position between the second friction plate 142-1 and the first friction plate 141-1 is also determined. The relative position between the second friction plate 142-1 and the first friction plate 141-1 is determined, and the gap between the second friction plate 142-1 and the first friction plate 141-1 can be maintained by the reset member, so that the second friction plate 142-1 can be accurately reset to the fully separated posture under the action of the inner elastic member 142-2 each time the friction plate set 14 is separated.

[0036] In the embodiment of the utility model, the outer hub 12 still comprises a radial hub wall 121 extending radially inward to the main shaft 2, and the piston 13, the friction plate set 14 and the inner hub 11 are arranged on both sides of the radial hub wall 121 respectively, and by arranging two sets of friction plate sets 14 and inner hubs 11, the switching of the forward gear and the reverse gear of the vehicle is facilitated.

[0037] As Figure 1 As shown in the embodiment of the utility model, the clutch further comprises a main shaft 2 as a center shaft of a transmission hub frame. In order to realize the position fixation between the outer hub 12 and the inner hub 11, the outer hub 12 can be fixedly connected with the main shaft 2 to realize the position determination of the outer hub 12 and the main shaft 2. Meanwhile, the main shaft 2 can further be provided with an inner hub bearing 113, which can be a deep groove ball bearing, and the inner hub bearing 113 is axially limited in cooperation with the main shaft 2, and a limiting step can be arranged on the inner hub bearing 113, and the hub body 111 can be installed on the inner hub bearing 113 through an inner hub mounting frame 112 and limited in cooperation with the limiting step, and through the step limiting of the inner hub bearing 113, the position determination of the inner hub 11 and the main shaft 2 can be realized.

[0038] In the embodiment of the utility model, the inner elastic piece 142-2 can be elastically supported at the root of the radial inner end of the second friction plate 142-1 to avoid the first friction plate 141-1 when the first friction plate 141-1 is inserted. Similarly, the outer elastic piece 141-2 is elastically supported at the root of the radial outer end of the first friction plate 141-1 to avoid the second friction plate 142-1 when the second friction plate 142-1 is inserted.

[0039] As Figure 1 Indicated in the embodiment of the utility model, the clutch further comprises a piston 13 arranged between the inner hub 11 and the outer hub 12, the piston 13 is arranged adjacent to the friction plate set 14, and the piston 13 is used for axial movement to push the first plate set 141 and the second plate set 142 in the friction plate set 14 to engage.

[0040] In the embodiment of the utility model, the axial one side of the piston 13 is the driving chamber 1a of the piston 13, and the other side is the mounting chamber of the friction plate set 14, the piston 13 is arranged axially adjacent to the friction plate set 14, and the main shaft 2 is further provided with a working oil channel communicated to the driving chamber 1a of the piston 13, the piston 13 can be driven to move or reset by controlling the oil inlet and outlet of the working oil channel, so that the clutch control of the friction plate set 14 is realized.

[0041] The clutch of the utility model can be a dry clutch, or can be a wet clutch, for the wet clutch, the main shaft 2 further needs to be provided with a lubricating oil channel communicated to the mounting chamber of the friction plate set 14, so that the lubricating oil can enter the mounting chamber to lubricate and cool the friction plate set 14 when the clutch works.

[0042] In the embodiment of the utility model, the main shaft 2 can be formed with an axially extending hollow oil channel 2a, and the main shaft 2 can be further provided with an axially spaced bypass working oil channel 2b and a bypass lubricating oil channel 2c, the bypass working oil channel 2b is used for being communicated to the driving chamber of the piston 13, and the bypass lubricating oil channel 2c is used for being communicated to the mounting chamber of the friction plate set 14. The hollow oil channel 2a between the bypass working oil channel 2b and the bypass lubricating oil channel 2c can be provided with an oil plug assembly 3, the oil plug assembly can include a plunger 31, a plunger elastic piece 32 and a plunger adjusting piece 33, the plunger adjusting piece 33 is used for supporting the pre-tightening of the plunger elastic piece 32. Through the plunger 31 and the plunger elastic piece 32, the bypass working oil channel 2b and the bypass lubricating oil channel 2c can realize conduction and cut-off control, and then the hollow oil channel can supply oil to the driving chamber and the mounting chamber respectively, compared with the existing two-way independent oil supply mode, the hydraulic control difficulty of the clutch is greatly reduced, and the structure design is also simpler.

[0043] To achieve the above object, the utility model also provides a working machine, wherein, the working machine comprises the clutch according to the above. Since the working machine adopts all the technical schemes of the above embodiments, at least has the beneficial effects brought by the above embodiments, which will not be repeated here.

[0044] In the description of the utility model, it is understood that the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can be explicitly or implicitly included at least one feature. In the description of the utility model, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0045] In the utility model, unless otherwise specifically defined and limited, the terms "installation", "connection", "connection", "fixing" and other terms should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanical connection, or electrical connection or communication with each other; it can be directly connected, or indirectly connected through intermediate medium, it can be the communication between two elements or the interaction relationship between two elements, unless otherwise specifically limited. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific situation.

[0046] In the description of the specification, the description of the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In the specification, the illustrative description of the above terms is not necessarily for the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable way. In addition, the skilled in the art can combine and combine the different embodiments or examples described in the specification and the characteristics of different embodiments or examples without contradiction.

[0047] Although the embodiments of the utility model have been described above, it can be understood that the above embodiments are exemplary and cannot be understood as limiting the utility model, and the skilled in the art can change, modify, replace and modify the above embodiments within the scope of the utility model.

Claims

1. A clutch, characterized by The clutch comprises: a transmission hub frame comprising an inner hub (11) and an outer hub (12) arranged radially apart; a friction plate group (14) comprising a first plate group (141) arranged on the outer hub (12) and a second plate group (142) arranged on the inner hub (11), the friction plates of the first plate group (141) being provided with outer elastic members (141-2) for elastically straining apart in the axial direction, the friction plates of the second plate group (142) being provided with inner elastic members (142-2) for elastically straining apart in the axial direction, the friction plates of the first plate group (141) and the friction plates of the second plate group (142) being interdigitated and alternately arranged.

2. The clutch of claim 1, wherein The first plate group (141) comprises a plurality of first friction plates (141-1) extending in the radial direction and arranged axially apart in sequence, and a first interval slot is formed between any adjacent first friction plates (141-1), and the first interval slot is provided with an outer elastic member (141-2) for elastically straining apart the adjacent first friction plates (141-1) in the axial direction; The second plate group (142) comprises a plurality of second friction plates (142-1) extending in the radial direction and arranged axially apart in sequence, and a second interval slot is formed between any adjacent second friction plates (142-1), and the second interval slot is provided with an inner elastic member (142-2) for elastically straining apart the adjacent second friction plates (142-1) in the axial direction; Wherein, the plurality of first friction plates (141-1) and the plurality of second friction plates (142-1) are interdigitated and alternately arranged.

3. The clutch of claim 2, wherein, The axial spacing between any adjacent second friction plates (142-1) and first friction plates (141-1) is equal.

4. The clutch of claim 2, wherein, The inner hub (11) comprises a hub body (111) and two inner baffles (114) arranged axially apart on the radially outer side of the hub body (111), and a plurality of first mounting keys arranged axially equidistantly between the two inner baffles (114), and the friction plates of the second plate group (142) are one-to-one mounted on the first mounting keys, and the inner elastic members (142-2) elastically abut between adjacent second friction plates (142-1).

5. The clutch of claim 4, wherein, The inner elastic members (142-2) elastically abut at the roots of the inner ends of the second friction plates (142-1).

6. The clutch of claim 2, wherein, The outer hub (12) comprises an axial hub wall (122) extending in the axial direction, and the radially inner side of the axial hub wall (122) is provided with a plurality of second mounting keys arranged axially equidistantly, and the friction plates of the first plate group (141) are one-to-one mounted on the second mounting keys, and the outer elastic members (141-2) elastically abut in the axial direction between adjacent first friction plates (141-1).

7. The clutch of claim 6, wherein, The outer elastic members (141-2) elastically abut at the roots of the radially outer ends of the first friction plates (141-1).

8. The clutch of any one of claims 1 to 6, wherein, The clutch further comprises a piston (13) arranged between the inner hub (11) and the outer hub (12), the piston (13) being arranged adjacent to the friction plate set (14), the piston (13) being used to axially move to push the first plate set (141) in the friction plate set (14) to engage with the second plate set (142).

9. The clutch of any one of claims 1 to 6, wherein, The clutch further comprises a main shaft (2) as a central shaft of the transmission hub frame, the outer hub (12) being fixedly connected with the main shaft (2), the main shaft (2) further being provided with an inner hub bearing (113), the inner hub bearing (113) being provided with a limiting step, the inner hub (11) being mounted on the inner hub bearing (113) and being limitedly matched with the limiting step.

10. A work machine characterized by, The clutch according to any one of claims 1 to 9.

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