CN212812805U

CN212812805U - Locking device of spreader and harvester thereof

Info

Publication number: CN212812805U
Application number: CN202021553019.6U
Authority: CN
Inventors: 王希军; 王洪源; 庞凤斌; 贝克·克劳斯
Original assignee: Deere and Co
Current assignee: Deere and Co
Priority date: 2020-07-30
Filing date: 2020-07-30
Publication date: 2021-03-30
Anticipated expiration: 2030-07-30

Abstract

The utility model discloses a ware locking device and harvester shed, wherein, a ware locking device shed, the ware of shedding can rotate around a ware rotation axis of shedding, locking device includes: the locking device comprises a rotatable locking piece and a hanging piece which is used for being hung with the locking piece; wherein the locking member has a locking position for hooking the hanging member when the spreader is rotated to a hanging position, and a stowed position for not hooking the hanging member; the lock is switched between the locking position and the stowed position by rotation; one of the locking member and the hanging member is adapted to be mounted on the spreader and the other is adapted to be mounted on the harvester housing. The locking device of the spreader and the harvester thereof can conveniently realize the quick switching of the spreader between the working state and the transportation state.

Description

Locking device of spreader and harvester thereof

Technical Field

The utility model relates to an agricultural equipment field especially relates to a shed ware locking device and harvester thereof.

Background

The existing spreader wastes time and labor when the working state and the transportation state are switched, and usually needs two people to finish the operation. The locking device of the spreader in the transportation state is a hook on two sides, the spreader needs to be rotated to be close to the hook, and the spreader is lifted and hung on the hook to complete the operation. Because of the heavy weight of the dispensers, two people are typically required to lift to complete the operation.

In the times that the labor cost is more and more expensive, more and more harvesters are provided with only one manipulator, and the working state of the scattering device is switched to the transportation state and is easily completed by one person, so that the harvester is an urgent demand of vast harvester users.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned needs, it is an object of the present invention to provide a locking device for a spreader and a harvester thereof, so as to facilitate the quick switching of the spreader between an operating state and a transportation state.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a locking device for a dispenser, said dispenser being rotatable about a dispenser axis of rotation, said locking device comprising: the locking device comprises a rotatable locking piece and a hanging piece which is used for being hung with the locking piece;

wherein the locking member has a locking position for hooking the hanging member when the spreader is rotated to a hanging position, and a stowed position for not hooking the hanging member; the lock is switched between the locking position and the stowed position by rotation; one of the locking member and the hanging member is adapted to be mounted on the spreader and the other is adapted to be mounted on the harvester housing.

As a preferred embodiment, the locking device further comprises a connecting spring; the connecting spring has a position with the longest extension length between the locking position and the retracting position.

In a preferred embodiment, the connecting spring has a first connecting end and a second connecting end; the locking piece rotates around a fixed rotation axis;

the locking piece is provided with a first connecting point connected with the first connecting end, and the second connecting end is connected with a second connecting point with a fixed position; the extended length of the connecting spring is longest when a line between the first connecting point and the second connecting point is passed through by the rotation axis, and the lock member is located at a position between the lock position and the stowed position at this time.

As a preferred embodiment, the locking device further comprises a fixed seat plate for fixed mounting on the harvester housing; the fixed seat plate is provided with a rotating shaft; the locking piece is rotatably arranged on the rotating shaft; the fixed seat plate provides the second connection point connected with the second connection end.

As a preferred embodiment, the fixed seat plate is further provided with a first limit protrusion; the first limiting protrusion is used for limiting the locking piece to rotate only on one side of the first limiting protrusion, and the locking piece is located at the retracted position when being rotated to be in contact with the first limiting protrusion.

As a preferred embodiment, the fixed seat plate is further provided with a second limiting protrusion; the second limiting protrusion is used for limiting the locking piece to rotate only on one side of the second limiting protrusion, and the locking piece is located at the locking position when rotating to be in contact with the second limiting protrusion.

In a preferred embodiment, the second stopper protrusion further serves as the second connection point to connect to the second connection end.

As a preferred embodiment, the lock comprises a rotary locking plate; a hanging groove for embedding the hanging piece and a hook positioned outside the hanging groove are formed in one side of the rotating shaft of the rotating locking plate; the hook is further provided with a guiding bevel edge at one side far away from the rotating shaft.

In a preferred embodiment, a retaining hole extending toward the rotating shaft is further provided in the hooking groove.

As a preferred embodiment, the rotary locking plate is further provided with a toggle end located at the other side of the rotating shaft; the toggle end is always located behind the second connection point when the locking member is switched between the locking position and the stowed position.

In a preferred embodiment, the hitching member comprises a hitching handle for fixed mounting on the rear end of the spreader; the hitch handle has an insertion rod for insertion into the hitch groove.

In a preferred embodiment, the hitching handle is of a U-shaped configuration.

In a preferred embodiment, the catch member comprises an insertion plate for fixed mounting on the rear end of the applicator, the insertion plate having a U-shaped portion insertable into the catch channel.

A harvester, comprising:

a chopper;

a throwing device installed at the rear side of the chopper; the spreader is rotatable about a spreader rotation axis;

the locking device of a dispenser according to any of the above embodiments.

Has the advantages that:

the utility model discloses an embodiment provides a ware locking device of shedding is through being equipped with matched with locking piece and hanging the union piece, through will shed the ware and hang the rotatory position of hanging and operate the locking piece and rotate latched position from packing up the position when needs will shed the ware and hang and transport, accomplish locking piece and hanging the coupling of union piece, and then accomplish the hanging of the ware of shedding, need not to lift the ware of shedding, therefore, the ware locking device of shedding of this embodiment can be convenient for realize the quick conversion of ware of shedding between operating condition and transport state.

Specific embodiments of the present invention are disclosed in detail with reference to the following description and the accompanying drawings, which specify the manner in which the principles of the invention may be employed. It should be understood that the embodiments of the present invention are not so limited in scope.

Features that are described and/or illustrated with respect to one embodiment may be used in the same way or in a similar way in one or more other embodiments, in combination with or instead of the features of the other embodiments.

It should be emphasized that the term "comprises/comprising" when used herein, is taken to specify the presence of stated features, integers, steps or components but does not preclude the presence or addition of one or more other features, integers, steps or components.

Drawings

In order to illustrate the embodiments of the present invention or the technical solutions in the prior art more clearly, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

FIG. 1 is a schematic view of a locking device for a dispenser according to an embodiment of the present invention in a stowed position;

FIG. 2 is a schematic view of FIG. 1 in a locked position;

FIG. 3 is a schematic view of the locking element of FIG. 1;

FIG. 4 is another schematic view of FIG. 3;

FIG. 5 is a schematic view of a dispenser locking device in a stowed position in accordance with another embodiment of the present invention;

fig. 6 is a schematic view of fig. 5 in a locked position.

Detailed Description

In order to make the technical solutions in the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall fall within the protection scope of the present invention.

It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 to 4, a locking device for a dispenser according to an embodiment of the present invention can rapidly switch between a working state (as shown in fig. 1) and a transportation state (as shown in fig. 2) of the dispenser 100, so as to lock the dispenser 100 at a hanging position corresponding to the transportation state and unlock the hanging position. The scattering device 100 is installed at the rear of the chopper 500 on the harvester, and scatters the materials crushed by the chopper 500. Wherein the spreader 100 is rotatable about a spreader rotation axis 101. The spreader 100 has an operating position corresponding to the operating state and a hanging position corresponding to the transporting state, and the spreader 100 is switched between the operating position and the hanging position by rotating about a spreader rotating shaft 101 (the rotating direction is the direction R in fig. 1).

Specifically, the locking device includes: a rotatable locking member 300, and a hanging member 200 for hanging the locking member 300. Wherein the locking member 300 has a locking position (shown in fig. 2) for hooking the hanging member 200 when the dispenser 100 is rotated to the hanging position, and a stowed position (shown in fig. 1, 3, 4) for not hooking the hanging member 200. The lock 300 is switched between the locking position and the stowed position by rotation. One of the lock 300 and the catch 200 is for mounting to the spreader 100 and the other is for mounting to the harvester housing 400.

The locking device of the spreader provided by the present embodiment is provided with the locking member 300 and the hanging member 200 which are engaged with each other, and when the spreader 100 needs to be hung for transportation, the hanging of the locking member 300 and the hanging member 200 is completed by rotating the spreader 100 to the hanging position and operating the locking member 300 to rotate from the stowed position to the locking position, and then the hanging of the spreader 100 is completed without lifting the spreader 100, so that the locking device of the present embodiment can facilitate the quick switching of the spreader 100 between the working state and the transportation state.

In this embodiment, lock 300 is mounted to harvester housing 400 at an overall height above spreader 100 and at approximately the same height as the upper end of spreader 100 when spreader 100 is in the hanging position. A hanger 200 is mounted to the rear end of the spreader 100 (at the upper end of the spreader 100 when the spreader 100 is in the hanging position). The lock 300 is rotatably installed at a designated position of the harvester housing 400 to cooperate with the hanging member 200 of the spreader 100 to hang the spreader 100.

It should be noted that in the embodiment of the present application, it is not limited that the locking member 300 is installed on the harvester housing 400, and the hitching members 200 are installed on the spreader 100, and only one of the hitching members 200 is needed to be installed on the spreader 100, and the other hitching member is needed to be installed on the harvester housing 400, for example, the hitching member 200 may be fixedly installed on the harvester housing 400, and the locking member 300 may be rotatably installed on the rear end of the spreader 100, and the locking member 300 is hooked with the hitching member 200 to hang up the spreader 100 when the spreader 100 is rotated to the hanging position.

With continued reference to fig. 1-4. To ensure reliable locking of the locking device, the locking device further comprises a connecting spring 330. The linking spring 330 is extended whether in the stowed or locked position, thereby allowing the locking member 300 to remain in the current position without play. The connecting spring 330 has a position with the longest elongation length between the locking position and the retracted position. As shown in FIG. 2, by such an arrangement, the connecting spring 330 can apply a downward force F1 to the locking member 300 when the locking member 300 is hooked to the hook 200, so as to maintain the locking member 300 in the hook-engaged state of the hook 200, prevent the locking member 300 from being disengaged from the hook 200, and ensure the reliability of the locking device in the locked state. Further, by providing the coupling spring 330, the locking member 300 can be maintained at the retracted position or the locking position, and the positional play of the locking member 300 can be prevented.

The position where the extended length of the connection spring 330 is the longest is set as the a position, where the elastic force of the connection spring 330 is the largest. The elastic force of the coupling spring 330 can provide assistance regardless of whether the locking member 300 is rotated toward the stowed position or the locking position. When it is desired to unlock the release spreader 100, the lock 300 is operated to rotate toward the stowed position, and after the lock 300 has passed the a position (rotated upward), the lock 300 can automatically rotate toward the stowed position by virtue of the spring force of the coupling spring 330 without continuing the operator's application of force or relieving the operator's application of force. Similarly, when the hanging and throwing device 100 needs to be locked, the locking member 300 is operated to rotate towards the locking position, after the locking member 300 (rotates downwards) passes through the position A, the locking member 300 can automatically rotate towards the locking position by means of the elastic force of the connecting spring 330 without applying force to an operator or reducing the operation force, and the locking member 300 and the hanging and hanging member 200 are automatically hooked and buckled, so that time and labor are saved.

Specifically, the connection spring 330 has a first connection end 331 and a second connection end 332. The locking member 300 rotates about a fixed rotational axis. The locking member 300 has a first connecting point 326 connected to the first connecting end 331. The first connection point 326 follows the locking element 300. The second connecting end 332 is connected to a fixed second connecting point 312. The connection spring 330 has the longest extension length when the line between the first connection point 326 and the second connection point 312 is passed through by the rotation axis or the connection spring 330 has the longest extension length when the rotation axis passes through the connection spring 330, and the lock member 300 is located at a position between the locking position and the retracted position.

To enable the mounting of the lock 300, the locking device further comprises a stationary seat plate 310 for stationary mounting on the harvester housing 400. The fixed base plate 310 is provided with a rotating shaft 340. The locking member 300 is rotatably mounted on the rotating shaft 340. The fixed seat plate 310 provides the second connection point 312 connected to the second connection end 332. Wherein the shaft 340 is generally located between the second connection point 312 and the first connection point 326.

Specifically, the fixed seat plate 310 may be installed on a (left or right) sidewall plate of the harvester housing 400, and when the locking member 300 rotates from the stowed position to the locking position, the locking member 300 gradually extends out of a rear wall plate of the harvester housing 400 to be hooked to the hook 200.

The fixed seat plate 310 is further provided with a first limiting protrusion 311. The first position-limiting protrusion 311 is used to limit the locking member 300 to rotate only on one side of the first position-limiting protrusion 311, and the locking member 300 is located at the retracted position when rotating to contact with the first position-limiting protrusion 311. The first position-limiting protrusion 311 is located above the rotating shaft 340 of the locking member 300. By providing the first stopper protrusion 311, the locking member 300 can be maintained at the retracted position without play by the coupling spring 330. As shown in fig. 4, the upper end of the fixing seat plate 310 is bent to form a first limiting protrusion 311, and a receiving groove for receiving the locking member 300 is further formed at a side edge of the first limiting protrusion 311, so as to prevent the locking member 300 from shaking left and right when the locking member 300 is in the retracted position.

In this embodiment, the fixing seat plate 310 is further provided with a second limiting protrusion. The second stopper protrusion serves to restrict the locking member 300 to be rotatable only at one side of the second stopper protrusion, and the locking member 300 is located at the locking position when rotated to be in contact with the second stopper protrusion. The second limit projection is located below the rotation shaft 340 of the locking member 300. By providing the second stopper protrusion, the locking member 300 can be maintained in the hanging position without play by the coupling spring 330. As shown in fig. 3 and 4, the lower end of the fixing seat plate 310 is bent to form a second limiting protrusion, and the locking member 300 is rotated and limited when contacting the second limiting protrusion, and cannot be rotated continuously in the counterclockwise direction.

Further, the second limit protrusion also serves as the second connection point 312 to connect with the second connection end 332. The second limiting protrusion is provided with a connection hole for connecting the second connection end 332 of the spring 330. Of course, in other embodiments, the second connection point 312 and the second limit protrusion may be different parts of the fixed seat plate 310, and the present invention is not limited thereto.

In the present embodiment, the locking member 300 is a plate structure. Specifically, the lock 300 includes a rotary lock plate 320. The plate surface of the rotation lock plate 320 and the plate surface of the fixed seat plate 310 are entirely parallel. The rotation locking plate 320 includes a main plate body 324 provided with the hooking groove 322 and a toggle end 325. The main plate 324 is rotatably mounted on the rotating shaft 340. The toggle end 325 extends obliquely with respect to the main plate body 324. The hanging groove 322 is located at one side of the rotating shaft 340, and the toggle end 325 is located at the other side of the rotating shaft 340. The toggle end 325 is always located behind the second connection point 312 when the locking member 300 is switched between the locking position and the stowed position.

Specifically, the rotary locking plate 320 is provided with a hanging groove 322 for the hanging member 200 to be inserted into and a hook 321 located outside the hanging groove 322 at one side of the rotating shaft 340. Wherein the hanging member 200 includes a hanging handle for fixedly mounting on the rear end of the dispenser 100. The hook 321 can hook the hanging handle. The hitch handle has an insertion bar for insertion into the hitch groove 322. The insertion rod is transversely arranged to be inserted into the hanging groove 322 from the opening of the hanging groove 322 to complete hanging.

For the convenience of operation, the hook 321 is further provided with a guiding bevel edge 3211 at a side away from the rotating shaft 340. By arranging the guiding inclined edge 3211, the rotating locking plate 320 can be placed in a locking position before the spreader 100 is hung, then the rotating spreader 100 approaches the locking device, the spreader 100 is pushed continuously, the hanging handle touches the guiding inclined edge 3211, the rotating locking plate 320 is forced to automatically rotate upwards until the rotating handle is pushed inwards to the lower part of the hanging groove 322, the rotating locking plate 320 automatically rotates downwards under the action of the connecting spring 330, the embedding rod of the hanging handle is embedded into the hanging groove 322, the hanging handle is hooked by the hook 321, and then the spreader 100 is locked into the rotating plate device.

In this embodiment, a retaining hole 323 extending toward the rotating shaft 340 is further formed in the hooking groove 322. By providing the retaining hole 323, the handle can be prevented from being separated from the locking plate 320 even when the rotation locking plate 320 is subjected to a force of the spreader 100 from the rear to the front, so that the locking device can securely and reliably lock the spreader 100 to hang. By providing the retaining hole 323, the overall shape of the hooking groove 322 is formed in an "L" shape, the retaining hole 323 at the inner end of the hooking groove 322 provides a margin for forward movement of the hooking handle, and the hooking handle cannot be disengaged from the rotary locking plate 320 regardless of whether it is rotated upward or downward by entering the retaining hole 323. When the external force is released, the spreader 100 is withdrawn from the backstop hole 323 by gravity and remains suspended by the hook 321.

In this embodiment, the hanging handle is a rod structure. The hanging handle is of a U-shaped structure. The U-shaped structure may be welded to the rear end of the spreader 100. The hook 321 at the end of the rotary locking plate 320 can be embedded into the hanging handle to hook the hanging handle, and correspondingly, the embedded rod of the hanging handle can also be embedded into the hanging groove 322 to perform double hook to form a firm and reliable hanging structure.

The locking mechanism of this embodiment may have two modes of operation, each of which may be accomplished by a single person to switch from the operational mode of the dispenser 100 to the transport mode.

1) When the operating state of the spreader 100 is switched to the transportation state, the spreader 100 is rotated from the bottom to the top, and when approaching the locking device, the rotary locking plate 320 of the locking device is rotated, and the rotary locking plate 320 is locked with the hitching handle.

2) When the operating state of the dispenser 100 is switched to the transport state, the locking device is operated to rotate the rotary locking plate 320 of the locking device to the locking position, and then the dispenser 100 is rotated, and when the dispenser approaches the locking device, the dispenser 100 is pushed slightly by force to push the hanging handle of the dispenser 100 into the hanging groove 322 of the rotary locking plate 320 of the locking device, thereby completing the operation.

As shown in fig. 5 and 6, in another embodiment, the lock member 300 'and the hanger 200' of the locking apparatus of this embodiment can be referred to as the lock member 300 and the hanger 200 of the above embodiment as a whole. The difference is that the hanging member 200 'is a plate body, and can form a stable and reliable hanging relationship when being embedded and hung with the locking member 300'. Specifically, the hanger 200' includes an insertion plate for fixedly mounting on the rear end of the spreader 100. The insertion plate has a U-shaped portion 201' that is inserted into the hooking groove 322. Between the U-shaped portion 201 ' and the upper end wall of the dispenser there is a hooking space 202 ' for the hook projecting into the locking element 300 '. The U-shaped portion 201 'has a larger embeddable area than the embedded bar, and accordingly, the hooking groove 322' has a rectangular notch as a whole. The U-shaped portion 201 'is inserted into the hooking groove 322' to form a firm and reliable hooking relationship without providing the retaining hole 323.

Other structures and working manners of the hanging member 200 'and the locking member 300' in this embodiment can refer to the above embodiments, and are not described in detail in this embodiment.

Based on the same concept, the embodiment of the invention also provides a harvester, which is described in the following embodiment. Because the principle of solving the problems and the technical effect which can be obtained by the harvester are similar to those of the locking device of the spreader, the implementation of the harvester can refer to the implementation of the locking device of the spreader, and repeated details are not repeated.

There is also provided in another embodiment of the present application a harvester, comprising: a chopper 500; a spreader 100 installed at the rear side of the shredder 500; the spreader 100 is rotatable about a spreader rotation axis 101; the locking device of a dispenser as described in any one of the above embodiments or examples.

It should be noted that the harvester provided in this embodiment may have any suitable conventional configuration for the steering section, the power section, and other sections (e.g., the walking section and the control section). For clearly and briefly explaining the technical solution provided by the present embodiment, the above parts will not be described again, and the drawings in the specification are also simplified accordingly. It should be understood, however, that the present embodiments are not limited in scope thereby.

Any numerical value recited herein includes all values from the lower value to the upper value that are incremented by one unit, provided that there is a separation of at least two units between any lower value and any higher value. For example, if it is stated that the number of a component or a value of a process variable (e.g., temperature, pressure, time, etc.) is from 1 to 90, preferably from 20 to 80, and more preferably from 30 to 70, it is intended that equivalents such as 15 to 85, 22 to 68, 43 to 51, 30 to 32 are also expressly enumerated in this specification. For values less than 1, one unit is suitably considered to be 0.0001, 0.001, 0.01, 0.1. These are only examples of what is intended to be explicitly recited, and all possible combinations of numerical values between the lowest value and the highest value that are explicitly recited in the specification in a similar manner are to be considered.

Unless otherwise indicated, all ranges include the endpoints and all numbers between the endpoints. The use of "about" or "approximately" with a range applies to both endpoints of the range. Thus, "about 20 to about 30" is intended to cover "about 20 to about 30", including at least the endpoints specified.

All articles and references disclosed, including patent applications and publications, are hereby incorporated by reference for all purposes. The term "consisting essentially of …" describing a combination shall include the identified element, ingredient, component or step as well as other elements, ingredients, components or steps that do not materially affect the basic novel characteristics of the combination. The use of the terms "comprising" or "including" to describe combinations of elements, components, or steps herein also contemplates embodiments that consist essentially of such elements, components, or steps. By using the term "may" herein, it is intended to indicate that any of the described attributes that "may" include are optional.

A plurality of elements, components, parts or steps can be provided by a single integrated element, component, part or step. Alternatively, a single integrated element, component, part or step may be divided into separate plural elements, components, parts or steps. The disclosure of "a" or "an" to describe an element, ingredient, component or step is not intended to foreclose other elements, ingredients, components or steps.

It is to be understood that the above description is intended to be illustrative, and not restrictive. Many embodiments and many applications other than the examples provided will be apparent to those of skill in the art upon reading the above description. The scope of the present teachings should, therefore, be determined not with reference to the above description, but should instead be determined with reference to the appended claims, along with the full scope of equivalents to which such claims are entitled. The disclosures of all articles and references, including patent applications and publications, are hereby incorporated by reference for all purposes. The omission in the foregoing claims of any aspect of the subject matter that is disclosed herein is not intended to forego such subject matter, nor should the inventors be construed as having contemplated such subject matter as being part of the disclosed inventive subject matter.

Claims

1. A locking device for a dispenser, said dispenser being rotatable about a dispenser axis of rotation, said locking device comprising: the locking device comprises a rotatable locking piece and a hanging piece which is used for being hung with the locking piece;

2. The spreader locking device of claim 1, wherein the locking device further comprises a connecting spring; the connecting spring has a position with the longest extension length between the locking position and the retracting position.

3. The spreader locking device of claim 2, wherein the connecting spring has a first connecting end and a second connecting end; the locking piece rotates around a fixed rotation axis;

4. The spreader locking device of claim 3, further comprising a stationary seat plate for stationary mounting on the harvester housing; the fixed seat plate is provided with a rotating shaft; the locking piece is rotatably arranged on the rotating shaft; the fixed seat plate provides the second connection point connected with the second connection end.

5. The locking device of claim 4, wherein said stationary seat plate is further provided with a first stop projection; the first limiting protrusion is used for limiting the locking piece to rotate only on one side of the first limiting protrusion, and the locking piece is located at the retracted position when being rotated to be in contact with the first limiting protrusion.

6. The locking device of claim 4, wherein said stationary seat plate is further provided with a second stop tab; the second limiting protrusion is used for limiting the locking piece to rotate only on one side of the second limiting protrusion, and the locking piece is located at the locking position when rotating to be in contact with the second limiting protrusion.

7. The dispenser locking device of claim 6, wherein said second retention tab also serves as said second attachment point to said second attachment end.

8. The spreader locking device of claim 4, wherein the lock comprises a rotary locking plate; a hanging groove for embedding the hanging piece and a hook positioned outside the hanging groove are formed in one side of the rotating shaft of the rotating locking plate; the hook is further provided with a guiding bevel edge at one side far away from the rotating shaft.

9. The locking device of claim 8, wherein the hooking channel is further provided with a backstop hole extending toward the pivot shaft.

10. The spreader locking device of claim 8, wherein the rotary locking plate is further provided with a toggle end located on the other side of the spindle; the toggle end is always located behind the second connection point when the locking member is switched between the locking position and the stowed position.

11. The spreader locking device of claim 8, wherein the hanger includes a hanger handle for fixed mounting on the rear end of the spreader; the hitch handle has an insertion rod for insertion into the hitch groove.

12. The spreader locking device of claim 11, wherein the hitch handle is of a U-shaped configuration.

13. The spreader locking device of claim 8, wherein the catch member comprises an insert plate for fixed mounting on the rear end of the spreader, the insert plate having a U-shaped portion insertable into the catch channel.

14. A harvester, comprising:

a chopper;

a spreader locking device according to any one of claims 1 to 13.