阅读说明：本技术 一种农机牵引连接结构 (A kind of agricultural machinery traction connection structure ) 是由 刘占鑫 杜蓉 于 2019-09-30 设计创作，主要内容包括：本发明中公开了一种农机牵引连接结构,其包括：第一连接部、第二连接部和转动连接部。其中,第一连接部用于连接车头和农机牵引连接结构,第二连接部用于连接拖车和农机牵引连接结构,转动连接部用于连接第一连接部和第二连接部。第一连接部包括两个相对设置的第一连接板,第一连接板上相对设置有第一贯通孔,且第一连接板形成有第一安装空间。第二连接部包括两个相对设置的第二连接板,第二连接板上相对设置有第二贯通孔,且第一连接板形成有第二安装空间。使用这种结构的农机牵引连接结构,工作人员可将动力连接管放置于凹槽中,以避免车头和拖车在发生相对转动时,动力连接管被夹断,进而对动力连接管进行保护。(A kind of agricultural machinery traction connection structure is disclosed in the present invention comprising: first connecting portion, second connecting portion and rotating junction.Wherein, first connecting portion is for connecting headstock and agricultural machinery traction connection structure, and second connecting portion is for connecting trailer and agricultural machinery traction connection structure, and rotating junction is for connecting first connecting portion and second connecting portion.First connecting portion includes two the first connecting plates being oppositely arranged, and is relatively set with the first through hole on the first connecting plate, and the first connecting plate is formed with the first installation space.Second connecting portion includes two the second connecting plates being oppositely arranged, and is relatively set with the second through hole on the second connecting plate, and the first connecting plate is formed with the second installation space.Connection structure is drawn using the agricultural machinery of this structure, staff can will be connected by power pipe and be placed in groove, to avoid headstock and trailer when relatively rotating, be connected by power pipe by pinch off, and then protect to pipe is connected by power.)

1. a kind of agricultural machinery draws connection structure, which is characterized in that the agricultural machinery draws connection structure and includes:

First connecting portion for connecting with headstock, the first connecting portion include two the first connecting plates being oppositely arranged, institute It states and is relatively set with the first through hole on the first connecting plate, and first connecting plate is formed with the first installation space；

Second connecting portion for connecting with trailer, the second connecting portion include two the second connecting plates being oppositely arranged, institute It states and is relatively set with the second through hole on the second connecting plate, and second connecting plate is formed with the second installation space；

For connecting the rotating junction of the first connecting portion and the second connecting portion, the outer surface of the rotating junction Structure in curved surface；

The first connecting portion, the second connecting portion and the rotating junction are all provided on sustained height for placing It is connected by power the groove of pipe；Wherein, the inner surface of the groove in the first connecting portion and the second connecting portion is flat Face structure, the inner surface structure in curved surface of the groove on the rotating junction.

2. agricultural machinery as described in claim 1 draws connection structure, which is characterized in that the groove is formed in first connection Position of the outer surface of the outer surface of plate, the outer surface of second connecting plate and the rotating junction close to lower section.

3. agricultural machinery as claimed in claim 2 draws connection structure, which is characterized in that the outer surface of first connecting plate With the inner surface of the groove of the outer surface connection of the rotating junction, second connecting plate with it is described The inner surface of the groove of the outer surface connection of rotating junction is all set as curved-surface structure.

4. agricultural machinery as claimed in claim 3 draws connection structure, which is characterized in that the outer surface of first connecting plate On the groove, first connecting plate the outer surface on the groove all at least provided with two for limiting The holding part for being connected by power pipe and falling, the groove on the outer surface of the rotating junction at least provided with One holding part.

5. agricultural machinery as claimed in claim 4 draws connection structure, which is characterized in that the holding part includes that bolt and bolt are solid Determine portion, the bolt fixed part is connected to the outer surface of first connecting plate, the outer surface of second connecting plate and described On the outer surface of rotating junction, the bolt is connected on the bolt fixed part.

6. agricultural machinery as described in claim 1 draws connection structure, which is characterized in that on first connecting plate at least provided with 3 first through holes, at least provided with 3 second through holes, first through hole on second connecting plate It is distributed with second through hole all triangular shapes.

7. agricultural machinery as described in claim 1 draws connection structure, which is characterized in that first connecting plate and described second connects Fishplate bar is set as arcuate structure far from one end of the rotating junction.

8. agricultural machinery as described in claim 1 draws connection structure, which is characterized in that first connecting plate and described second connects Fishplate bar is set as L shape.

9. agricultural machinery as described in claim 1 draws connection structure, which is characterized in that the junction of two first connecting plates Stiffening plate is all provided with the junction of two second connecting plates.

10. as the described in any item agricultural machinery of claim 1-9 draw connection structure, which is characterized in that the rotating junction packet Include shaft and be used to support the shell of shaft rotation, the first connecting portion and the second connecting portion one of those with Shaft connection, another and the cage connection.

Technical field

The present invention relates to a kind of agricultural machinery more particularly to a kind of agricultural machinery to draw connection structure.

Background technique

Farm machinery during the work time, is generally drawn by headstock, and trailer carries out operation, the connection between headstock and trailer Structure directly affects the working performance of agricultural machinery.In the prior art, headstock and trailer by a simple bolt connection structure into Row connection.But can be generally connected between headstock and trailer and be connected by power pipe and carry out power transmission, if not to being connected by power Pipe is fixed, and be easy to cause that be connected by power pipe clamp disconnected in the agricultural machinery course of work.

Chinese invention patent as Authorization Notice No. is CN208353849U in the prior art discloses a kind of agricultural machinery traction Device is provided with the U-shaped fixing seat for installing positioning pin in the agricultural machinery traction device, but the agricultural machinery traction device does not disclose For the fixed fixing piece for being connected by power pipe.Using the agricultural machinery traction device of this structure, the headstock and trailer of agricultural machinery pass through U-shaped Fixing seat is connect with detent fit, when headstock is opposite with trailer to be deflected, is connected by power tube capacity easily by pinch off.Therefore, this The agricultural machinery traction device of structure there may be agricultural machinery be connected by power during the work time tube capacity easily by pinch off the problem of.

Summary of the invention

The present invention provides a kind of agricultural machinery traction connection structure, and solving agricultural machinery in the prior art, power connects during the work time Adapter tube is easy the problem of by pinch off.

In order to solve the above technical problems, one of present invention embodiment provides a kind of agricultural machinery traction connection structure, Include:

First connecting portion for connecting with headstock, first connecting portion include two the first connecting plates being oppositely arranged, the The first through hole is relatively set on one connecting plate, and the first connecting plate is formed with the first installation space；

Second connecting portion for connecting with trailer, second connecting portion include two the second connecting plates being oppositely arranged, the The second through hole is relatively set on two connecting plates, and the second connecting plate is formed with the second installation space；

For connecting the rotating junction of first connecting portion and second connecting portion, the outer surface of rotating junction knot in curved surface Structure；

First connecting portion, second connecting portion and rotating junction are provided on sustained height is connected by power pipe for placing Groove；Wherein, the inner surface of the groove in first connecting portion and second connecting portion is planar structure, recessed on rotating junction The inner surface of slot structure in curved surface.

By adopting the above technical scheme, the agricultural machinery traction connection structure in present embodiment includes: first connecting portion, the second company Socket part and rotating junction, wherein first connecting portion, second connecting portion and rotating junction are all arranged useful on sustained height The groove of pipe is connected by power in placement.In use, staff can will be connected by power pipe and be placed in groove, to avoid Headstock and trailer are connected by power pipe by pinch off when relatively rotating, and then protect to pipe is connected by power.

In addition, the inner surface of the groove on rotating junction is set as curved-surface structure, this setup may make power The connecting tube contact even closer with the rotating junction of structure in curved surface, can be further reduced and be connected by power pipe by the several of pinch off Rate.

Further, another embodiment of the invention provides a kind of agricultural machinery traction connection structure, and groove is formed in the Position of the outer surface of the outer surface of one connecting plate, the outer surface of the second connecting plate and rotating junction close to lower section.

By adopting the above technical scheme, groove be formed in the outer surface of the first connecting plate, the second connecting plate outer surface and turn Position of the outer surface of rotation connection close to lower section.This setup, when being connected by power pipe and accident occur and be detached from groove, The lower section of agricultural machinery traction connection structure can directly be fallen to by being connected by power pipe, can avoid being connected by power pipe and agricultural machinery traction connection knot Structure weave in will be connected by power pipe clamp and break.

Further, another embodiment of the invention provides a kind of agricultural machinery traction connection structure, the first connecting plate The outer surface of the inner surface of the groove of the outer surface connection of outer surface and rotating junction, the second connecting plate and rotating junction The inner surface of the groove of junction is all set as curved-surface structure.

By adopting the above technical scheme, due to the outer surface and rotating junction of the first connecting plate outer surface connection it is recessed The inner surface of the groove of the outer surface connection of the inner surface of slot, the second connecting plate and rotating junction is not at same plane On, when personnel will be connected by power pipe and be placed in groove in work, the protrusion of each groove junction, which may cause, to be connected by power Pipe is broken off.Present embodiment can avoid the generation of this phenomenon using this structure.

Further, another embodiment of the invention provides a kind of agricultural machinery traction connection structure, the first connecting plate Groove on outer surface, the groove on the outer surface of the first connecting plate are all connected by power pipe for limiting at least provided with two The holding part fallen, the groove on the outer surface of rotating junction is at least provided with a holding part.

By adopting the above technical scheme, the holding part being set on groove can limit the pipe that is connected by power being placed in groove and fall It falls.

Further, another embodiment of the invention provides a kind of agricultural machinery traction connection structure, and holding part includes inserting Pin and bolt fixed part, bolt fixed part are connected to the outer surface of the first connecting plate, the outer surface of the second connecting plate and rotation and connect On the outer surface of socket part, bolt is connected on bolt fixed part.

By adopting the above technical scheme, since the structure of bolt and bolt fixed part is relatively simple, present embodiment is by clamping Part is set as this structure can be further such that agricultural machinery traction connection structure be simpler and staff more easily makes Connection structure is drawn with the agricultural machinery of this structure.

Further, another embodiment of the invention provides a kind of agricultural machinery traction connection structure, on the first connecting plate At least provided with 3 the first through holes, at least provided with 3 the second through holes, the first through hole and second on the second connecting plate Through hole all triangular shapes are distributed.

By adopting the above technical scheme, the first through hole and the second through hole are stated using this set side in present embodiment Formula, it is possible to increase the agricultural machinery draw connection structure and headstock and trailer junction limit power so that agricultural machinery traction connection structure and It is more firm that headstock is connected with trailer.

Further, another embodiment of the invention provides a kind of agricultural machinery traction connection structure, the first connecting plate and Second connecting plate is set as arcuate structure far from one end of rotating junction.

By adopting the above technical scheme, the first connecting plate and the second connecting plate are set as arc far from one end of rotating junction Structure.This structure may make the first connecting plate and the second connecting plate in the case where anti-buckling strength is constant, more save system Producing material material.

In addition, the first connecting plate and the second connecting plate are set as this structure, shape is more beautiful.

Further, another embodiment of the invention provides a kind of agricultural machinery traction connection structure, the first connecting plate and Second connecting plate is set as L shape.

By adopting the above technical scheme, the first connecting plate and the second connecting plate are set as L shape, and this structure has structure simple The advantages of.

Further, another embodiment of the invention provides a kind of agricultural machinery traction connection structure, two first connections The junction of plate and the junction of two the second connecting plates are all provided with stiffening plate.

By adopting the above technical scheme, the setting of stiffening plate can further improve the bending resistance of the first connecting plate and the second connecting plate Qu Qiangdu.

Further, another embodiment of the invention provides a kind of agricultural machinery traction connection structure, rotating junction packet It includes shaft and is used to support the shell of shaft rotation, one of those connect with shaft for first connecting portion and second connecting portion, separately One and cage connection.

By adopting the above technical scheme, the rotating junction in present embodiment uses pivot structure, simple with structure The advantages of with convenient for assembly.

Other features of the invention and corresponding beneficial effect are described in the aft section of specification, and should be managed Solution, at least partly beneficial effect is apparent from from the record in description of the invention.

Detailed description of the invention

Fig. 1 is the schematic perspective view that a kind of agricultural machinery that the embodiment in the present invention provides draws connection structure；

Fig. 2 is the left view structural representation that a kind of agricultural machinery that the embodiment in the present invention provides draws connection structure.

Description of symbols:

10: first connecting portion；11: the first connecting plates；12: the first through holes；13: the first installation spaces；

20: second connecting portion；21: the second connecting plates；22: the second through holes；23: the second installation spaces；

30: rotating junction；31: shaft；32: shell；

40: groove；

50: holding part；51: bolt；52: bolt fixed part；

60: stiffening plate.

Specific embodiment

To keep the purposes, technical schemes and advantages of the present embodiment clearer, below in conjunction in the embodiment of the present invention Attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is this hair Bright a part of the embodiment, instead of all the embodiments.The component of the present embodiment being usually described and illustrated herein in the accompanying drawings It can arrange and design with a variety of different configurations.

Therefore, the detailed description of the embodiment of the present invention provided in the accompanying drawings is not intended to limit below claimed The scope of the present invention, but be merely representative of selected embodiment of the invention.Based on the embodiments of the present invention, this field is common Technical staff's every other embodiment obtained without creative efforts belongs to the model that the present invention protects It encloses.

It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.

In the description of the present embodiment, it should be noted that the orientation or position of the instructions such as term " on ", "inner", "bottom" Relationship be based on the orientation or positional relationship of attached drawing or the invention product using when the orientation usually put or position close System, is merely for convenience of description of the present invention and simplification of the description, rather than the device or element of indication or suggestion meaning must have Specific orientation is constructed and operated in a specific orientation, therefore is not considered as limiting the invention.In addition, term " the One ", " second " etc. is only used for distinguishing description, is not understood to indicate or imply relative importance.

In the description of the present embodiment, it is also necessary to which explanation is unless specifically defined or limited otherwise, term " is set Set ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally Connection；It can be mechanical connection, be also possible to be electrically connected；Can be directly connected, can also indirectly connected through an intermediary, It can be the connection inside two elements.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition The concrete meaning of language in the present embodiment.

Below by specific embodiment combination attached drawing, invention is further described in detail.

Embodiment in the present invention provides a kind of agricultural machinery traction connection structure, as shown in Figure 1, comprising: first connecting portion 10, second connecting portion 20 and rotating junction 30.Specifically, first connecting portion 10 is for connecting headstock and agricultural machinery traction connection knot Structure, second connecting portion 20 is for connecting trailer and agricultural machinery traction connection structure, and rotating junction 30 is for connecting first connecting portion 10 and second connecting portion 20.

More specifically, first connecting portion 10 includes two the first connecting plates 11 being oppositely arranged, on the first connecting plate 11 It is relatively set with the first through hole 12, and the first connecting plate 11 is formed with the first installation space 13.Second connecting portion 20 includes two A the second connecting plate 21 being oppositely arranged is relatively set with the second through hole 22, and the second connecting plate 21 on the second connecting plate 21 It is formed with the second installation space 23.The outer surface of rotating junction 30 structure in curved surface.

Further, first connecting portion 10, second connecting portion 20 and rotating junction 30 are arranged useful on sustained height The groove 40 of pipe is connected by power in placement；Wherein, the inner surface of the groove 40 in first connecting portion 10 and second connecting portion 20 is Planar structure, the inner surface structure in curved surface of the groove 40 on rotating junction 30.

Specifically, agricultural machinery traction connection structure provided in this embodiment is in use, staff can connect power Adapter tube is placed in groove 40, to avoid headstock and trailer when relatively rotating, is connected by power pipe by pinch off, and then to dynamic Power connecting tube is protected.

More specifically, the inner surface of the groove 40 on rotating junction 30 is set as curved-surface structure, this setup It may make and be connected by power the pipe contact even closer with the rotating junction 30 of structure in curved surface, can be further reduced and be connected by power Pipe is by the probability of pinch off.

Further, the present embodiment provides a kind of agricultural machinery to draw connection structure, and agricultural machinery draws the groove 40 in connection structure The outer surface of the outer surface of the first connecting plate 11, the outer surface of the second connecting plate 21 and rotating junction 30 is formed in close to lower section Position.

Specifically, in the present embodiment, groove 40 be formed in the outer surface of the first connecting plate 11, the second connecting plate 21 it is outer Position of the outer surface of surface and rotating junction 30 close to lower section.This setup occurs surprisingly simultaneously when being connected by power pipe When being detached from groove 40, the lower section of agricultural machinery traction connection structure can directly be fallen to by being connected by power pipe, can avoid being connected by power pipe with Agricultural machinery draws connection structure weave in, will be connected by power pipe clamp and breaks.

More specifically, in the present embodiment, the position of groove 40 and the outer surface of the first connecting plate 11, the second connecting plate The distance of the bottom of the outer surface of 21 outer surface and rotating junction 30 should be set as between 2CM-3CM, wherein can To be 2CM, it is also possible to 2.5CM, can also be 3CM, can also be other sizes, it specifically can be according to actual design and use Demand setting, the present embodiment do not limit this.

Further, the present embodiment provides a kind of agricultural machinery to draw connection structure, the outer surface of the first connecting plate 11 and rotation The inner surface of the groove 40 of the outer surface connection of interconnecting piece 30, the second connecting plate 21 are connect with the outer surface of rotating junction 30 The inner surface of the groove 40 at place is all set as curved-surface structure.

Specifically, due to the groove 40 of the outer surface connection of the outer surface and rotating junction 30 of the first connecting plate 11 The inner surface of the groove 40 of the outer surface connection of inner surface, the second connecting plate 21 and rotating junction 30 is not at same flat On face, when personnel will be connected by power pipe and be placed in groove 40 in work, the protrusion of each 40 junction of groove may cause dynamic Power connecting tube is broken off.Present embodiment can avoid the generation of this phenomenon using this structure.

More specifically, in the present embodiment, it is closely contacted to make to be connected by power pipe with 40 inner surface of groove, it should The radius that the cross section of curved-surface structure is formed by circular arc is set as 5CM-10CM, according to actual design and can specifically make It is set with demand, the present embodiment does not limit this.

Further, the present embodiment provides a kind of agricultural machinery to draw connection structure, recessed on the outer surface of the first connecting plate 11 Slot 40, the first connecting plate 11 outer surface on groove 40 at be all connected by power what pipe was fallen for limiting at least provided with two Holding part 50, at least provided with a holding part 50 at the groove 40 on the outer surface of rotating junction 30.

Specifically, in the present embodiment, the holding part 50 being set on groove 40, which can limit, is placed in moving in groove 40 Power connecting tube is fallen.

More specifically, recessed on the outer surface of the groove 40 on the outer surface of the first connecting plate 11, the first connecting plate 11 2 holding parts 50 can be set at slot 40,3 holding parts 50 also can be set, the holding part 50 of other quantity can also be set, It can specifically set according to actual design and use demand, and the present embodiment does not limit this.

More specifically, 1 holding part 50 can be set at the groove 40 on the outer surface of rotating junction 30, can also sets 2 holding parts 50 are set, the holding part 50 of other quantity can also be set, can specifically be set according to actual design and use demand, The present embodiment does not limit this.

Further, the present embodiment provides a kind of agricultural machinery to draw connection structure, and holding part 50 includes that bolt 51 and bolt are solid Determine portion 52, bolt fixed part 52 is connected to the outer surface of the first connecting plate 11, the outer surface of the second connecting plate 21 and rotation connection On the outer surface in portion 30, bolt 51 is connected on bolt fixed part 52.

Specifically, present embodiment sets holding part 50 since the structure of bolt 51 and bolt fixed part 52 is relatively simple Being set to this structure can be further such that agricultural machinery traction connection structure be simpler and staff more easily uses this The agricultural machinery of kind structure draws connection structure.

More specifically, in the present embodiment, the hole for Fixed latches 51 is provided on bolt fixed part 52, wherein One end of bolt 51 passes through the hole on bolt fixed part 52, and extends to the lower section of groove 40, will be connected by power pipe clamp and be held in In groove 40.

Further, the present embodiment provides a kind of agricultural machinery to draw connection structure, at least provided with 3 on the first connecting plate 11 First through hole 12, at least provided with 3 the second through holes 22, the first through hole 12 and the second through hole on the second connecting plate 21 22 all triangular shapes are distributed.

Specifically, in the present embodiment, through hole uses this setup, it is possible to increase the agricultural machinery draw connection structure with The limit power of headstock and trailer junction so that agricultural machinery traction connection structure connected with headstock and trailer it is more firm.

More specifically, in embodiment, the first through hole 12 and the second through hole 22 can be set 3, can also set Set 4, may be arranged as other quantity, can specifically be set according to actual design and use demand, the present embodiment to this not It limits.

Further, in embodiment, the first through hole 12 and the second through hole 22 can be set to triangular shape distribution, It can be set to the distribution of 4 side shapes, can also be other shapes, can specifically be set according to actual design and use demand, this reality Example is applied not limit this.

Further, the present embodiment provides a kind of agricultural machinery to draw connection structure, the first connecting plate 11 and the second connecting plate 21 One end far from rotating junction 30 is set as arcuate structure.

Specifically, in the present embodiment, the first connecting plate 11 and second one end of connecting plate 21 far from rotating junction 30 It is set as arcuate structure.This structure may make the first connecting plate 11 and the second connecting plate 21 situation constant in anti-buckling strength Under, more save manufacture material.

More specifically, in the present embodiment, the first connecting plate 11 and the second connecting plate 21 are set as this structure, outside Shape is more beautiful.

More specifically, in the present embodiment, the radius of the arcuate structure is set as 15CM-20CM, specifically may be used It is set according to actual design and use demand, the present embodiment does not limit this.

Further, the present embodiment provides a kind of agricultural machinery to draw connection structure, the first connecting plate 11 and the second connecting plate 21 It is set as L shape.

Specifically, in the present embodiment, the first connecting plate 11 and the second connecting plate 21 are set as L shape, and this structure has The simple advantage of structure.

Further, the present embodiment provides a kind of agricultural machinery draw connection structure, the junction of two the first connecting plates 11 and The junction of two the second connecting plates 21 is all provided with stiffening plate 60.

Specifically, in the present embodiment, the setting of stiffening plate 60 can further improve the first connecting plate 11 and the second connection The flexural strength of plate 21.

Further, the present embodiment provides a kind of agricultural machinery to draw connection structure, and rotating junction 30 includes shaft 31 and uses In the shell 32 of support shaft rotation, one of those connect with shaft 31 for first connecting portion 10 and second connecting portion 20, another It is a to be connect with shell 32.

Specifically, in the present embodiment, rotating junction 30 uses 31 structure of shaft, with structure simply and convenient for dress With the advantages of.

More specifically, in the present embodiment, the through-hole for installing shaft 31 is provided on shell 32 (not show in figure Out), the card slot (not shown) for installing bearing, during the installation process, staff are provided on the side wall of through-hole First bearing can be installed in shaft 31, then intert the shaft 31 with bearing into the through-hole on shell 32.

More specifically, in the present embodiment, the inner ring of bearing and shaft 31 are interference fitted, the outer ring of bearing and through-hole Inner wall interference fit.

More specifically, in the present embodiment, can be first connecting portion 10 to connect with shaft 31, second connecting portion 20 with Shell 32 connects, and is also possible to first connecting portion 10 and connect with shell 32, second connecting portion 20 is connect with shaft 31.It specifically may be used It is set according to actual design and use demand, the present embodiment does not limit this.

The present invention provides a kind of agricultural machinery traction connection structure comprising: first connecting portion 10, second connecting portion 20 and rotation Interconnecting piece 30.Specifically, first connecting portion 10 is for connecting headstock and agricultural machinery traction connection structure, second connecting portion 20 is for connecting Trailer and agricultural machinery traction connection structure are connect, rotating junction 30 is for connecting first connecting portion 10 and second connecting portion 20.

More specifically, first connecting portion 10 includes two the first connecting plates 11 being oppositely arranged, on the first connecting plate 11 It is relatively set with the first through hole 12, and the first connecting plate 11 is formed with the first installation space 13.Second connecting portion 20 includes two A the second connecting plate 21 being oppositely arranged is relatively set with the second through hole 22, and the first connecting plate 11 on the second connecting plate 21 It is formed with the second installation space 23.The outer surface of rotating junction 30 structure in curved surface.

Further, first connecting portion 10, second connecting portion 20 and rotating junction 30 are arranged useful on sustained height The groove 40 of pipe is connected by power in placement；Wherein, the inner surface of the groove 40 in first connecting portion 10 and second connecting portion 20 is Planar structure, the inner surface structure in curved surface of the groove 40 on rotating junction 30.

Specifically, agricultural machinery traction connection structure provided in this embodiment is in use, staff can connect power Adapter tube is placed in groove 40, to avoid headstock and trailer when relatively rotating, is connected by power pipe by pinch off, and then to dynamic Power connecting tube is protected.

More specifically, the inner surface of the groove 40 on rotating junction 30 is set as curved-surface structure, this setup It may make and be connected by power the pipe contact even closer with the rotating junction 30 of structure in curved surface, can be further reduced and be connected by power Pipe is by the probability of pinch off.

The above content is specific embodiment is combined, further detailed description of the invention, and it cannot be said that this hair Bright specific implementation is only limited to these instructions.For those of ordinary skill in the art to which the present invention belongs, it is not taking off Under the premise of from present inventive concept, a number of simple deductions or replacements can also be made, all shall be regarded as belonging to protection of the invention Range.