Coupler and harvester

Abstract

The utility model belongs to the technical field of agricultural machinery, and discloses a coupler and a harvester, in the coupler, two coupling sleeves are used for being connected with two transmission shafts respectively, so that the coupling sleeves and the transmission shafts rotate synchronously. The number of the transmission parts is two, and the two transmission parts are detachably connected to the two ends of the middle shaft correspondingly. The number of the matching pieces is two, the two matching pieces are connected to the two coupling sleeves correspondingly, the transmission pieces and the matching pieces are arranged in a staggered mode in the axial direction of the intermediate shaft and abut against each other in the circumferential direction of the intermediate shaft, and therefore power can be transmitted between the transmission pieces and the matching pieces in the circumferential direction of the intermediate shaft, and the intermediate shaft and the two coupling sleeves can rotate synchronously. And therefore, the coupler and the two transmission shafts can synchronously rotate. In addition, the two transmission parts are detachably connected to the two ends of the intermediate shaft respectively, so that the requirement for machining precision is low, and meanwhile, the intermediate shaft and the coupling sleeve are convenient to disassemble and assemble.

Description

Technical Field

[0001] The utility model relates to the technical field of agricultural machinery, in particular to a coupling and a harvester. Background Art

[0002] In the transmission mechanism of agricultural machinery such as wheat harvesters or corn harvesters, a coupling is usually required to connect two transmission shafts so that the two transmission shafts can rotate synchronously.

[0003] In view of the problem that the structure of the coupling in the traditional solution is relatively complicated, the prior art provides a coupling, in which the sleeves of the coupling are provided with two groups, which are symmetrically distributed with respect to the center line of the cross slider, and both sleeves have slots, and the protrusions at both ends of the cross slider are respectively inserted into the slots of the two sleeves, and the protrusions abut against the side walls of the slots along the circumferential direction of the sleeves, so that the two sleeves can rotate synchronously, and then the two transmission shafts respectively connected to the two sleeves rotate synchronously. However, the cross slider and the two sleeves are all integrally processed, and mutually matching protrusions and slots need to be processed, which has high requirements for processing accuracy and is difficult to process. Utility Model Content

[0004] According to one aspect of the utility model, the utility model provides a coupling to solve the problem in the prior art that the cross slider and two shaft sleeves have high processing precision requirements and high processing difficulty.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] Coupling, including:

[0007] Intermediate shaft;

[0008] Two coupling sleeves are provided, and the two coupling sleeves are used to connect two transmission shafts respectively so that the coupling sleeves and the transmission shafts rotate synchronously;

[0009] There are two transmission members, which are detachably connected to the two ends of the intermediate shaft respectively;

[0010] There are two matching pieces, which are respectively connected to the two coupling sleeves. The transmission piece and the matching piece are staggered along the axial direction of the intermediate shaft and abut against each other along the circumferential direction of the intermediate shaft.

[0011] As a preferred solution of the coupling, the two mating parts are detachably connected to the two coupling sleeves respectively.

[0012] As a preferred embodiment of the coupling, the transmission member includes a plurality of transmission blocks, and the plurality of transmission blocks can be detachably connected to the intermediate shaft. A first slot is formed between any two adjacent transmission blocks, and the mating member includes a plurality of mating blocks, and the plurality of mating blocks are plugged into the plurality of first slots one by one.

[0013] As a preferred solution of the coupling, the plurality of transmission blocks all have an arc-shaped inner wall, and the arc-shaped inner wall is in contact with the outer peripheral wall of the intermediate shaft.

[0014] As a preferred solution of the coupling, the transmission member is mounted on the intermediate shaft via a first fixing bolt.

[0015] As a preferred solution of the coupling, an annular protrusion is convexly provided on the outer peripheral wall of the intermediate shaft, and the transmission member abuts against the annular protrusion.

[0016] As a preferred solution of the coupling, the transmission member has a first receiving groove, and the head of the first fixing bolt is at least partially located in the first receiving groove.

[0017] As a preferred solution of the coupling, the coupling sleeve has an internal spline, and the internal spline is used to connect with the external spline of the transmission shaft.

[0018] As a preferred embodiment of the coupling, the coupling sleeve comprises a coupling sleeve body and two C-shaped sleeves arranged on the coupling sleeve body, the two C-shaped sleeves are used to be clamped on the transmission shaft, and the two C-shaped sleeves are connected by connecting bolts, the C-shaped sleeve is provided with a plurality of spline tooth shapes, and the internal spline is composed of the spline tooth shapes of the two C-shaped sleeves.

[0019] According to another aspect of the utility model, a harvester is provided, including a transmission mechanism, wherein the transmission mechanism includes the above-mentioned coupling and two transmission shafts, and the coupling and the two transmission shafts can rotate synchronously.

[0020] The beneficial effects of the utility model are:

[0021] The utility model provides a coupling, including an intermediate shaft, a coupling sleeve, a transmission member and a matching member. Two coupling sleeves are provided, and the two coupling sleeves are used to connect two transmission shafts respectively, so that the coupling sleeve and the transmission shaft rotate synchronously. Two transmission members are provided, and the two transmission members are detachably connected to the two ends of the intermediate shaft respectively; two matching members are provided, and the two matching members are connected to the two coupling sleeves respectively, and the transmission members and the matching members are staggered along the axial direction of the intermediate shaft and abutted along the circumferential direction of the intermediate shaft, so that the transmission members and the matching members can transmit power along the circumferential direction of the intermediate shaft, so that the intermediate shaft and the two coupling sleeves can rotate synchronously, and then the coupling and the two transmission shafts can rotate synchronously. In addition, since the two transmission members are detachably connected to the two ends of the intermediate shaft respectively, the requirements for processing accuracy are relatively low, and at the same time, the disassembly and assembly between the intermediate shaft and the coupling sleeve are convenient.

[0022] The utility model also provides a harvester, including a transmission mechanism, the transmission mechanism including the above-mentioned coupling and two transmission shafts, the coupling and the two transmission shafts can rotate synchronously. The coupling can transmit power along the circumferential direction of the intermediate shaft through the transmission member and the matching member, so that the intermediate shaft and the two coupling sleeves can rotate synchronously, and then the coupling and the two transmission shafts can rotate synchronously. In addition, since the two transmission members are detachably connected to the two ends of the intermediate shaft, the requirements for processing accuracy are relatively low, and at the same time, the disassembly and assembly between the intermediate shaft and the coupling sleeve is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the structure of the coupling in the embodiment of the utility model;

[0024] Figure 2 This is an exploded view of the coupling in the embodiment of the utility model. Figure 1 ;

[0025] Figure 3 This is an exploded view of the coupling in the embodiment of the utility model. Figure 2 .

[0026] In the figure:

[0027] 100. Transmission shaft;

[0028] 1. Intermediate shaft; 11. Annular protrusion;

[0029] 2. Coupling sleeve; 21. Internal spline; 22. Coupling sleeve body; 23. C-shaped sleeve;

[0030] 3. Transmission member; 31. Transmission block; 32. First receiving groove;

[0031] 4. Matching piece; 41. Matching block; 42. Second receiving groove;

[0032] 51. First fixing bolt; 52. Second fixing bolt;

[0033] 6. Connecting bolts. DETAILED DESCRIPTION

[0034] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0035] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0037] In the description of this embodiment, the terms "upper", "lower", "left", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0038] In view of the problem that the structure of the coupling in the traditional solution is relatively complicated, the prior art provides a coupling, in which the sleeves of the coupling are provided with two groups, which are symmetrically distributed with respect to the center line of the cross slider, and both sleeves have slots, and the protrusions at both ends of the cross slider are respectively inserted into the slots of the two sleeves, and the protrusions abut against the side walls of the slots along the circumferential direction of the sleeves, so that the two sleeves can rotate synchronously, and then the two transmission shafts respectively connected to the two sleeves rotate synchronously. However, the cross slider and the two sleeves are all integrally processed, and mutually matching protrusions and slots need to be processed, which has high requirements for processing accuracy and is difficult to process.

[0039] In view of the above problems, this embodiment provides a coupling to solve the problem that the processing precision requirements of the cross slider and the two sleeves in the prior art are high and the processing difficulty is large. It can be used in the field of agricultural machinery technology, specifically in equipment such as wheat machines or corn machines.

[0040] Reference Figure 1-Figure 3 The coupling comprises an intermediate shaft 1, a coupling sleeve 2, a transmission member 3 and a matching member 4. Two coupling sleeves 2 are provided. The two coupling sleeves 2 are used to connect two transmission shafts 100 respectively, so that the coupling sleeves 2 and the transmission shafts 100 rotate synchronously. Two transmission members 3 are provided. The two transmission members 3 are detachably connected to the two ends of the intermediate shaft 1 respectively; two matching members 4 are provided. The two matching members 4 are connected to the two coupling sleeves 2 respectively. The transmission members 3 and the matching members 4 are staggered along the axial direction of the intermediate shaft 1 and abut against each other along the circumferential direction of the intermediate shaft 1, so that the transmission members 3 and the matching members 4 can transmit power along the circumferential direction of the intermediate shaft 1, so that the intermediate shaft 1 and the two coupling sleeves 2 can rotate synchronously, and then the coupling and the two transmission shafts 100 can rotate synchronously. In addition, since the two transmission members 3 are detachably connected to the two ends of the intermediate shaft 1 respectively, the requirements for processing accuracy are relatively low, and at the same time, the disassembly and assembly between the intermediate shaft 1 and the coupling sleeve 2 are convenient.

[0041] Continue to refer to Figure 1-Figure 3 The two mating pieces 4 are detachably connected to the two coupling sleeves 2, respectively, to further reduce the machining accuracy requirements of the coupling sleeves 2, which is convenient for machining the coupling sleeves 2. Before installation, the intermediate shaft 1 and the two coupling sleeves 2 can be aligned and positioned first, and then the transmission piece 3 and the mating piece 4 can be installed on the intermediate shaft 1 and the coupling sleeve 2, respectively, which is convenient for installation. When disassembly is required, the transmission piece 3 and the mating piece 4 can be disassembled first, which is convenient for disassembly between the intermediate shaft 1 and the coupling sleeve 2.

[0042] Continue to refer to Figure 1-Figure 3The transmission member 3 includes a plurality of transmission blocks 31, which are all detachably connected to the intermediate shaft 1, and a first slot is formed between any two adjacent transmission blocks 31. The matching member 4 includes a plurality of matching blocks 41, and the plurality of matching blocks 41 are plugged into the plurality of first slots one by one, so that the transmission member 3 and the matching member 4 are staggered along the axial direction of the intermediate shaft 1, and abut against each other along the circumferential direction of the intermediate shaft 1 to achieve power transmission. Optionally, the plurality of matching blocks 41 are all detachably connected to the coupling sleeve 2, and a second slot is formed between any two adjacent matching blocks 41, and the plurality of transmission blocks 31 are plugged into the plurality of second slots one by one. Optionally, any transmission block 31 is in contact with the side wall of the second slot, and any matching block 41 is in contact with the side wall of the first slot, so that the transmission between the two is more stable, and transmission in both positive and negative directions can be achieved.

[0043] As an alternative solution, the transmission member 3 includes a base and a plurality of transmission blocks arranged on the base, and the base is detachably connected to the intermediate shaft 1, which can also achieve a detachable connection between the transmission member 3 and the intermediate shaft 1.

[0044] As another alternative, the transmission member 3 may also adopt a straight-line structure, the mating member 4 is provided with a slot for mating with the transmission member 3, the transmission member 3 is inserted into the slot, and the power transmission is achieved by the abutment between the transmission member 3 and the side wall of the slot. In addition, the transmission member 3 and the mating member 4 may also adopt a semicircular protrusion structure, and the two semicircular protrusions abut along the circumferential direction of the intermediate shaft 1.

[0045] Continue to refer to Figure 1-Figure 3 The plurality of transmission blocks 31 all have an arc-shaped inner wall, which fits the outer peripheral wall of the intermediate shaft 1 , so that the connection between the transmission block 31 and the intermediate shaft 1 is more stable, and the transmission block 31 can be prevented from rotating relative to the intermediate shaft 1 .

[0046] Continue to refer to Figure 1-Figure 3 The transmission member 3 is mounted on the intermediate shaft 1 through the first fixing bolt 51, specifically, the transmission block 31 is mounted on the intermediate shaft 1 through the first fixing bolt 51, so that the transmission member 3 and the intermediate shaft 1 can be detachably connected through the first fixing bolt 51, and the connection structure is simple and easy to operate. Optionally, the matching member 4 is mounted on the coupling sleeve 2 through the second fixing bolt 52, and has the same technical effect.

[0047] In this embodiment, the transmission member 3 is arranged on the outer peripheral wall of the intermediate shaft 1, but only one first fixing bolt 51 may cause the first fixing bolt 51 to loosen during the transmission process, resulting in unstable connection. In this regard, an annular protrusion 11 is convexly provided on the outer peripheral wall of the intermediate shaft 1, and the multiple transmission blocks 31 of the transmission member 3 are all in contact with the annular protrusion 11, thereby preventing the transmission blocks 31 from rotating relative to the intermediate shaft 1.

[0048] In other embodiments, the transmission member 3 may be mounted on the intermediate shaft 1 by means of a plurality of first fixing bolts 51 to prevent the two from rotating relative to each other.

[0049] Continue to refer to Figure 1-Figure 3 The transmission member 3 has a first accommodating groove 32 , which is specifically opened in the transmission block 31 , and the head of the first fixing bolt 51 is at least partially located in the first accommodating groove 32 to reduce the space occupied by the head of the first fixing bolt 51 .

[0050] Optionally, the fitting 4 has a second receiving groove 42 , which is specifically opened in the fitting block 41 , and the head of the second fixing bolt 52 is at least partially located in the second receiving groove 42 to reduce the space occupied by the head of the second fixing bolt 52 .

[0051] Optionally, the structures and sizes of the transmission blocks 31 of the transmission member 3 and the matching blocks 41 of the matching member 4 are exactly the same, and during processing, only a number of transmission blocks 31 or matching blocks 41 of the same structure and size need to be processed, thereby further simplifying the processing flow. In other embodiments, the structures and sizes of the transmission blocks 31 of the transmission member 3 and the matching blocks 41 of the matching member 4 may also be set to be different.

[0052] Continue to refer to Figure 1-Figure 3 The coupling sleeve 2 has an internal spline 21, which is used to connect with the external spline of the transmission shaft 100, so that the transmission shaft 100 and the coupling sleeve 2 are connected to each other in synchronous rotation through the internal spline 21, which is convenient for processing and can make the force between the inner wall of the coupling sleeve 2 and the outer wall of the transmission shaft 100 more uniform.

[0053] Continue to refer to Figure 1-Figure 3 The coupling sleeve 2 specifically includes a coupling sleeve body 22 and two C-shaped sleeves 23 arranged on the coupling sleeve body 22. The two C-shaped sleeves 23 are used to be clamped on the transmission shaft 100, and the two C-shaped sleeves 23 are connected by connecting bolts 6. The C-shaped sleeve 23 is provided with a plurality of spline tooth shapes. The internal spline 21 is composed of the spline tooth shapes of the two C-shaped sleeves 23. In addition, the gap size between the two C-shaped sleeves 23 can also be adjusted by the connecting bolts 6 to fine-tune the spacing between the two C-shaped sleeves 23 according to the specific size of the transmission shaft 100.

[0054] In this embodiment, the fitting 4 is arranged on the outer wall of the coupling sleeve body 22, but only one second fixing bolt 52 may cause the second fixing bolt 52 to loosen during the transmission process, resulting in unstable connection. In response, the outer walls of the two C-shaped sleeves 23 protrude radially outward relative to the outer wall of the coupling sleeve body 22, and the multiple matching blocks 41 of the fitting 4 are all in contact with the end surface of the C-shaped sleeve 23, thereby preventing the matching blocks 41 from rotating relative to the coupling sleeve 2.

[0055] The present embodiment also provides a harvester, which is specifically a wheat harvester or a corn harvester. The harvester includes a transmission mechanism, which includes the above-mentioned coupling and two transmission shafts 100, and the coupling and the two transmission shafts 100 can rotate synchronously. The coupling can transmit power along the circumferential direction of the intermediate shaft 1 through the transmission member 3 and the matching member 4, so that the intermediate shaft 1 and the two coupling sleeves 2 can rotate synchronously, and then the coupling and the two transmission shafts 100 can rotate synchronously. In addition, since the two transmission members 3 are detachably connected to the two ends of the intermediate shaft 1, the requirements for processing accuracy are relatively low, and at the same time, it is convenient to disassemble and assemble the intermediate shaft 1 and the coupling sleeve 2.

[0056] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. A coupling, characterized in that: include: Intermediate shaft (1); Two coupling sleeves (2) are provided, and the two coupling sleeves (2) are used to respectively connect two transmission shafts (100) so that the coupling sleeves (2) and the transmission shafts (100) rotate synchronously; There are two transmission members (3), and the two transmission members (3) are detachably connected to the two ends of the intermediate shaft (1); There are two matching pieces (4), and the two matching pieces (4) are respectively connected to the two coupling sleeves (2). The transmission piece (3) and the matching piece (4) are alternately arranged along the axial direction of the intermediate shaft (1) and abut against each other along the circumferential direction of the intermediate shaft (1).

2. The coupling according to claim 1, characterized in that: The two matching pieces (4) are respectively detachably connected to the two coupling sleeves (2).

3. The coupling according to claim 1, characterized in that: The transmission member (3) comprises a plurality of transmission blocks (31), and the plurality of transmission blocks (31) are all detachably connected to the intermediate shaft (1); a first slot is formed between any two adjacent transmission blocks (31); and the matching member (4) comprises a plurality of matching blocks (41), and the plurality of matching blocks (41) are plugged into the plurality of first slots one by one.

4. The coupling according to claim 3, characterized in that: The plurality of transmission blocks (31) all have an arc-shaped inner wall, and the arc-shaped inner wall is in close contact with the outer peripheral wall of the intermediate shaft (1).

5. The coupling according to claim 1, characterized in that: The transmission member (3) is mounted on the intermediate shaft (1) via a first fixing bolt (51).

6. The coupling according to claim 5, characterized in that: An annular protrusion (11) is convexly provided on the outer peripheral wall of the intermediate shaft (1), and the transmission member (3) abuts against the annular protrusion (11).

7. The coupling according to claim 5, characterized in that: The transmission member (3) has a first receiving groove (32), and the head of the first fixing bolt (51) is at least partially located in the first receiving groove (32).

8. The coupling according to claim 1, characterized in that: The coupling sleeve (2) has an internal spline (21), and the internal spline (21) is used to be connected to the external spline of the transmission shaft (100).

9. The coupling according to claim 8, characterized in that: The coupling sleeve (2) comprises a coupling sleeve body (22) and two C-shaped sleeves (23) arranged on the coupling sleeve body (22), the two C-shaped sleeves (23) are used to be clamped on the transmission shaft (100), and the two C-shaped sleeves (23) are connected by connecting bolts (6), the C-shaped sleeve (23) is provided with a plurality of spline tooth shapes, and the internal spline (21) is composed of the spline tooth shapes of the two C-shaped sleeves (23).

10. A harvester, characterized in that: It comprises a transmission mechanism, wherein the transmission mechanism comprises a coupling as claimed in any one of claims 1 to 9 and two transmission shafts (100), and the coupling and the two transmission shafts (100) are capable of rotating synchronously.

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