A rocker arm assembly, working device, and engineering machinery adaptable to various working conditions

Abstract

This invention discloses a rocker assembly, working device, and engineering machinery adaptable to various working conditions, including a left rocker assembly and a right rocker assembly. The left rocker assembly includes a left rocker and a left auxiliary rod, with one end of the left auxiliary rod assembled to one end of the left rocker. The right rocker assembly includes a right rocker and a right auxiliary rod, with one end of the right auxiliary rod assembled to one end of the right rocker. When the bucket is performing a front scoop, the left and right rocker assemblies are located on opposite sides of the bucket stick. The left and right rockers are hinged to the bucket cylinder, and the left and right auxiliary rods are hinged to the connecting rod. The connection points of the left rocker and the left auxiliary rod, as well as the connection points of the right rocker and the right auxiliary rod, are hinged to the bucket stick. When the bucket is performing a backhoe, the left and right auxiliary rods are removed. One end of the left and right rockers is hinged to the bucket cylinder and the connecting rod, and the other end of the left and right rockers is hinged to the bucket stick. This invention has a simple structure, is easy to manufacture, has low cost, and reliable performance, and can be widely applied and promoted.

Description

Technical Field

[0001] This invention relates to a rocker assembly adaptable to various working conditions, belonging to the field of engineering machinery. Background Technology

[0002] Excavators, as a typical representative of construction machinery, have a wide range of operations and complex working conditions.

[0003] Traditional excavators perform bucket digging actions or other attachment work primarily through a four-bar linkage mechanism consisting of a bucket cylinder located on the stick, which drives a rocker arm, connecting rod, bucket lugs, and stick.

[0004] like Figure 1 As shown, existing joysticks are commonly welded components (made of joystick plate 2 and two stop sleeves 1 and 3 welded together). When the working conditions of the bucket or the excavator attachments are changed, the joystick cannot be adjusted accordingly. This forces the product design to make certain compromises, either requiring the replacement of different attachments or the product not achieving optimal efficiency. The product cannot adapt well to market demands, reducing its competitiveness.

[0005] Figure 2 The bucket 8 is assembled with the stick 5, connecting rod 7, rocker arm 4 and bucket cylinder 6 in a backhoe configuration. When the excavator's working conditions change and it needs to be switched to front shovel operation, the traditional rocker arm structure cannot be directly installed, and the excavator needs to be replaced, which wastes certain production costs, labor costs and downtime costs during replacement. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention provides a joystick assembly adaptable to various working conditions. Unlike conventional joysticks, the newly designed joystick assembly, while retaining the original joystick functions, also has the function of adjusting the forward and reverse shovel installation of the bucket. It can adjust the forward and reverse shovel installation of the bucket according to changes in working conditions to meet the needs of different working conditions.

[0007] This invention is implemented according to the following technical solution:

[0008] In a first aspect, the present invention provides a rocker assembly adaptable to various working conditions, including a left rocker assembly and a right rocker assembly; the left rocker assembly includes a left rocker and a left auxiliary rod, one end of the left auxiliary rod being assembled with one end of the left rocker; the right rocker assembly includes a right rocker and a right auxiliary rod, one end of the right auxiliary rod being assembled with one end of the right rocker; when the bucket is performing a front scoop, the left and right rocker assemblies are located on both sides of the bucket stick, the left and right rockers are hinged to the bucket cylinder, the left and right auxiliary rods are hinged to the connecting rod, and the connection points of the left rocker and the left auxiliary rod, and the connection points of the right rocker and the right auxiliary rod, are hinged to the bucket stick; when the bucket is performing a backhoe, the left and right auxiliary rods are removed, one end of the left and right rockers is hinged to the bucket cylinder and the connecting rod, and the other end of the left and right rockers is hinged to the bucket stick.

[0009] In some embodiments, the angles between the left joystick and the left auxiliary joystick, and between the right joystick and the right auxiliary joystick, are adjustable. The maximum angles of bucket retraction and opening are adjusted by changing the angles between the left and right joysticks and the auxiliary joysticks.

[0010] In some embodiments, each end of the left joystick has a hinge hole, and the left joystick has a ring of evenly spaced threaded holes around the hinge hole at the end connected to the left sub-rod; each end of the left sub-rod has a hinge hole, and the left sub-rod has through holes corresponding to the threaded holes around the hinge hole at the end connected to the left joystick; one threaded hole and one through hole are matched with one bolt, and after adjusting the angle between the left joystick and the left sub-rod, the left joystick and the left sub-rod are fixed together by multiple bolts.

[0011] In some embodiments, the left rocker arm has a stop sleeve I arranged coaxially with the hinge hole on the outer side of the hinge hole at the end away from the left auxiliary rod. The stop sleeve I has a radial through hole, in which a fastener for restricting the axial movement of the pin is installed.

[0012] In some embodiments, the left rocker arm has a stop sleeve II on the outer side of the hinge hole at one end connected to the left auxiliary rod. The stop sleeve II is coaxially arranged with the hinge hole and located in a threaded hole. The stop sleeve II can be embedded in the hinge hole of the left auxiliary rod. The stop sleeve II has a radial through hole, in which a stop pin for restricting the axial movement of the pin shaft is installed. The stop pin inserted in the stop sleeve II is radially moved and limited by the inner wall of the hinge hole of the left auxiliary rod.

[0013] In some embodiments, the left auxiliary rod has a stop sleeve III arranged coaxially with the hinge hole on the outer side of the hinge hole at the end away from the left rocker arm. The stop sleeve III has a radial through hole for installing a fastener that restricts the axial movement of the pin. The left auxiliary rod has an adjusting pad arranged coaxially with the hinge hole on the inner side of the hinge hole at the end away from the left rocker arm.

[0014] In some embodiments, each end of the right joystick has a hinge hole, and the right joystick has a ring of evenly spaced threaded holes around the hinge hole at the end connected to the right sub-rod; each end of the right sub-rod has a hinge hole, and the right sub-rod has through holes corresponding to the threaded holes around the hinge hole at the end connected to the right joystick; one threaded hole and one through hole are matched with one bolt, and after adjusting the angle between the right joystick and the right sub-rod, the right joystick and the right sub-rod are fixed together by multiple bolts.

[0015] In some embodiments, the right auxiliary rod has an adjustment pad arranged coaxially with the hinge hole on the inner side of the hinge hole at the end away from the right rocker arm.

[0016] In some embodiments, the cross-sections of the left joystick, right joystick, left auxiliary joystick, and right auxiliary joystick are all dumbbell-shaped structures that are wider at both sides and narrower in the middle; the width of the part where the left joystick connects to the left auxiliary joystick is greater than the width of other parts of the left joystick and left auxiliary joystick; the width of the part where the right joystick connects to the right auxiliary joystick is greater than the width of other parts of the right joystick and right auxiliary joystick.

[0017] Secondly, the present invention provides a working device, including a stick, a bucket, a connecting rod, a bucket cylinder, and the aforementioned rocker assembly adapted to various working conditions; one hinge point of the bucket is connected to the front end of the stick; one end of the connecting rod is connected to another hinge point of the bucket; one end of the bucket cylinder is hinged to the rear end of the stick; the rocker assembly cooperates with the stick, the bucket cylinder, and the connecting rod to complete the switching of the bucket's forward and reverse shoveling.

[0018] Thirdly, the present invention provides an engineering machine equipped with the aforementioned rocker assembly adapted to various working conditions; or, equipped with the aforementioned working device.

[0019] Compared with the prior art, the present invention has the following advantages:

[0020] This invention replaces the original welded rocker arm with an assembled rocker arm, enabling the switching between forward and reverse shovel positions of the bucket without replacing the bucket, thus adapting to various working conditions and increasing the excavator's functionality. Furthermore, the angle between the rocker arm and the auxiliary rod can be adjusted by adjusting the bolts, thereby adjusting the maximum angle of bucket retraction and opening without replacing the bucket cylinder, further enhancing the excavator's functionality.

[0021] This invention has a simple structure, is easy to manufacture, has low cost, and reliable performance, and can be widely used and promoted. Attached Figure Description

[0022] The accompanying drawings, as part of this invention, are provided to further illustrate the invention. The illustrative embodiments and descriptions of the invention are used to explain the invention, but do not constitute an undue limitation thereof. Clearly, the drawings described below are merely some embodiments, and those skilled in the art can obtain other drawings based on these drawings without any creative effort.

[0023] In the attached diagram:

[0024] Figure 1 A diagram of a joystick structure in the prior art;

[0025] Figure 2 This is an assembly drawing of a joystick based on existing technology;

[0026] Attached diagram labels: 1-stop sleeve, 2-rocker plate, 3-stop sleeve, 4-rocker, 5-stick, 6-bucket cylinder, 7-connecting rod, 8-bucket.

[0027] Figure 3 This is a structural diagram of the rocker assembly of the present invention;

[0028] Figure 4 This is a cross-sectional view of the rocker assembly of the present invention.

[0029] Figure 5 This is an exploded view of the left joystick assembly of the present invention;

[0030] Figure 6 This is an exploded view of the right joystick assembly of the present invention;

[0031] Figure 7 This is a front view of the joystick of the present invention;

[0032] Figure 8 This is a front view of the secondary rod of the present invention;

[0033] Figure 9 This is an assembly drawing of the rocker arm assembly of the present invention;

[0034] Figure 10 The diagram shows the bucket performing a backhoe action (a is bucket opening, b is bucket closing).

[0035] Figure 11 This is a schematic diagram showing how the bucket position changes as the angle of the rocker assembly changes during front shoveling.

[0036] Figure 12 The diagram shows the shovel action when the bucket is at an angle of 1 at the rocker assembly (a is opening the bucket, b is closing the bucket).

[0037] Figure 13 The diagram shows the shovel action when the bucket is at angle two at the rocker assembly (a is opening the bucket, b is closing the bucket).

[0038] Figure 14 The diagram shows the shovel action when the bucket is at angle three at the rocker assembly (a is opening the bucket, b is closing the bucket).

[0039] Attached diagram labels: 9. Stop sleeve I; 10. Left rocker arm; 11. Bolt; 12. Stop sleeve II; 13. Stop pin; 14. Left auxiliary rod; 15. Stop sleeve III; 16. Adjusting shim; 17. Bucket; 18. Connecting rod; 19. Rocker arm assembly; 20. Stick; 21. Bucket cylinder; 22. Threaded hole; 23. Through hole; 24-Right rocker arm; 25-Right auxiliary rod.

[0040] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the invention in any way, but rather to illustrate the concept of the invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0042] In the description of this invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0043] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0044] like Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 9 , Figure 10 , Figure 12As shown, a rocker assembly adaptable to various working conditions includes a left rocker assembly and a right rocker assembly; the left rocker assembly includes a left rocker 10 and a left auxiliary rod 14, with one end of the left auxiliary rod 14 assembled with one end of the left rocker 10; the right rocker assembly includes a right rocker 24 and a right auxiliary rod 25, with one end of the right auxiliary rod 25 assembled with one end of the right rocker 24; when the bucket 17 is performing a frontal shovel operation, the left and right rocker assemblies 10 and 24 are located on both sides of the stick 20, respectively. 24 is hinged to the bucket cylinder 21. The left and right auxiliary rods 14 and 25 are hinged to the connecting rod 18. The connection between the left rocker arm 10 and the left auxiliary rod 14, and the connection between the right rocker arm 24 and the right auxiliary rod 25, are hinged to the stick 20. When the bucket 17 is backhoeing, the left and right auxiliary rods 14 and 25 are removed. One end of the left and right rocker arms 10 and 24 is hinged to the bucket cylinder 21 and the connecting rod 18, and the other end of the left and right rocker arms 10 and 24 is hinged to the stick 20.

[0045] like Figure 11 , Figure 12 , Figure 13 , Figure 14 As shown, the angles between the left joystick 10 and the left auxiliary joystick 14, and between the right joystick 24 and the right auxiliary joystick 25 are adjustable. The maximum angles of the bucket 17 for retracting and opening can be adjusted by changing the angles between the left and right joysticks and the auxiliary joysticks.

[0046] The following is a further explanation of the aforementioned left joystick assembly.

[0047] like Figure 4 , Figure 5 , Figure 7 , Figure 8 As shown, each end of the left joystick 10 has a hinge hole, and around the hinge hole at the end of the left joystick 10 connected to the left auxiliary rod 14, there is a ring of evenly spaced threaded holes 22. Each end of the left auxiliary rod 14 has a hinge hole, and around the hinge hole at the end of the left auxiliary rod 14 connected to the left joystick 10, there are through holes 23 corresponding to the threaded holes 22. One threaded hole 22 and one through hole 23 are matched with one bolt 11. After adjusting the angle between the left joystick 10 and the left auxiliary rod 14, the left joystick 10 and the left auxiliary rod 14 are fixed together using multiple bolts 11.

[0048] Further options, such as Figure 4 , Figure 5 As shown, the left rocker arm 10 has a stop sleeve I9 ​​arranged coaxially with the hinge hole on the outer side of the hinge hole at the end away from the left auxiliary rod 14. The stop sleeve I9 ​​has a radial through hole, in which fasteners (bolts and nuts) that restrict the axial movement of the pin are installed.

[0049] Further options, such as Figure 4 , Figure 5As shown, the left rocker arm 10 has a stop sleeve II 12 on the outer side of the hinge hole at one end connected to the left auxiliary rod 14. The stop sleeve II 12 is coaxially arranged with the hinge hole and located in a threaded hole 22. The stop sleeve II 12 can be embedded in the hinge hole of the left auxiliary rod 14. The stop sleeve II 12 has a radial through hole. The radial through hole is used to install a stop pin 13 that restricts the axial movement of the pin shaft. The stop pin 13 inserted in the stop sleeve II 12 is radially moved and limited by the inner wall of the hinge hole of the left auxiliary rod 14.

[0050] Further options, such as Figure 4 , Figure 5 As shown, the left auxiliary rod 14 has a stop sleeve Ⅲ15 arranged coaxially with the hinge hole on the outer side of the hinge hole at the end away from the left rocker 10. The stop sleeve Ⅲ15 has a radial through hole, in which fasteners (bolts and nuts) that restrict the axial movement of the pin are installed. The left auxiliary rod 14 has an adjusting pad 16 arranged coaxially with the hinge hole on the inner side of the hinge hole at the end away from the left rocker 10.

[0051] The following is a further explanation of the aforementioned right analog stick assembly.

[0052] like Figure 4 , Figure 6 , Figure 7 , Figure 8 As shown, each end of the right joystick 24 has a hinge hole, and the right joystick 24 has a ring of evenly spaced threaded holes 22 around the hinge hole at the end connected to the right auxiliary rod 25; each end of the right auxiliary rod 25 has a hinge hole, and the right auxiliary rod 25 has through holes 23 around the hinge hole at the end connected to the right joystick 24 that correspond one-to-one with the threaded holes 22; one threaded hole 22 and one through hole 23 are matched with one bolt 11. After adjusting the angle between the right joystick 24 and the right auxiliary rod 25, the right joystick 24 and the right auxiliary rod 25 are fixed together by multiple bolts 11.

[0053] Further options, such as Figure 4 , Figure 6 As shown, the right auxiliary rod 25 has an adjustment pad 16 arranged coaxially with the hinge hole on the inner side of the hinge hole at the end away from the right rocker arm 24.

[0054] like Figure 7 , Figure 8 As shown, the cross-sections of the left joystick 10, right joystick 24, left auxiliary joystick 14, and right auxiliary joystick 25 are all dumbbell-shaped structures that are wider at both sides and narrower in the middle; the width of the part connecting the left joystick 10 and the left auxiliary joystick 14 is greater than the width of other parts of the left joystick 10 and the left auxiliary joystick 14; the width of the part connecting the right joystick 24 and the right auxiliary joystick 25 is greater than the width of other parts of the right joystick 24 and the right auxiliary joystick 25.

[0055] like Figure 9As shown, a working device includes a stick 20, a bucket 17, a connecting rod 18, a bucket cylinder 21, and a rocker assembly 19 adapted to various working conditions. One hinge point of the bucket 17 is connected to the front end of the stick 20; one end of the connecting rod 18 is connected to another hinge point of the bucket 17; one end of the bucket cylinder 21 is hinged to the rear end of the stick 20; the rocker assembly 19 adapted to various working conditions cooperates with the stick 20, the bucket cylinder 21, and the connecting rod 18 to complete the switching of the bucket 17 between forward and reverse shoveling.

[0056] The specific switching process is as follows: Figure 9 As shown, when the bucket 17 is performing a front shovel operation, the left and right rocker arm assemblies are located on both sides of the stick 20, respectively. The left and right rocker arms 10 and 24 are hinged together with the bucket cylinder 21 via pins. The left and right auxiliary rods 14 and 25 are hinged together with the connecting rod 18 via pins. The connection points of the left rocker arm 10 and the left auxiliary rod 14, as well as the connection points of the right rocker arm 24 and the right auxiliary rod 25, are hinged together with the stick 20 via pins.

[0057] like Figure 10 As shown, when the bucket 17 is backhoeing, the left and right auxiliary rods 14 and 25 are removed. One end of the left and right rocker arms 10 and 24 is hinged to the bucket cylinder 21 and the connecting rod 18 by a pin, and the other end of the left and right rocker arms 10 and 24 is hinged to the stick 20 by a pin.

[0058] Further options: such as Figure 11 , Figure 12 , Figure 13 , Figure 14 As shown, the angles between the left joystick 10 and the left auxiliary joystick 14, and between the right joystick 24 and the right auxiliary joystick 25 are adjustable. The maximum angles of the bucket 17 for retracting and opening can be adjusted by changing the angles between the left and right joysticks and the auxiliary joysticks.

[0059] The present invention also provides an engineering machine equipped with the above-mentioned working device.

[0060] In summary, this invention replaces the original welded rocker arm with a prefabricated rocker arm, enabling switching between front and back shovel positions without replacing the bucket. This adapts to various working conditions (e.g., backshovel for digging and front shovel for loading), thus increasing the excavator's functionality. Furthermore, the angle between the rocker arm and the auxiliary rod can be adjusted by adjusting bolts, allowing for adjustment of the maximum bucket opening and closing angles without replacing the bucket cylinder, further enhancing the excavator's capabilities. This invention is simple in structure, easy to manufacture, low in cost, and reliable in performance, making it suitable for widespread application and promotion.

[0061] Numerous specific details are set forth in the specification provided herein. However, it will be understood that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this specification.

[0062] Furthermore, those skilled in the art will understand that although some embodiments described herein include certain features found in other embodiments but not others, combinations of features from different embodiments are also within the scope of protection of this invention and form different embodiments. For example, in the embodiments described above, those skilled in the art can use them in combination based on known technical solutions and the technical problems to be solved by this application.

[0063] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A rocker assembly adaptable to various working conditions, characterized in that, include: The left joystick assembly includes: Left analog stick; The left auxiliary lever, one end of which is assembled together with one end of the left rocker; The right analog stick assembly includes: Right analog stick; The right auxiliary lever, one end of which is assembled together with one end of the right rocker; When the bucket is performing a front shovel, the left and right rocker arm assemblies are located on both sides of the stick. The left and right rocker arms are hinged to the bucket cylinder, the left and right auxiliary rods are hinged to the connecting rod, and the connection points of the left rocker arm and the left auxiliary rod, as well as the connection points of the right rocker arm and the right auxiliary rod, are hinged to the stick. When the bucket is backhoeing, the left and right auxiliary rods are removed. One end of the left and right rocker arms is hinged to the bucket cylinder and connecting rod, and the other end of the left and right rocker arms is hinged to the stick.

2. The rocker assembly adaptable to multiple working conditions according to claim 1, characterized in that: The angles between the left joystick and the left auxiliary joystick, and between the right joystick and the right auxiliary joystick, are adjustable. The maximum angles of bucket opening and closing can be adjusted by changing the angles between the left and right joysticks and auxiliary joysticks.

3. A rocker assembly adaptable to multiple working conditions according to claim 2, characterized in that: The left rocker arm has a hinge hole at each end, and a ring of evenly spaced threaded holes is provided around the hinge hole at the end of the left rocker arm that is connected to the left auxiliary rod. Each end of the left auxiliary rod is provided with a hinge hole, and the left auxiliary rod is provided with through holes around the hinge hole at the end connected to the left rocker arm, which correspond one-to-one with the threaded holes; A threaded hole and a through hole are matched with a bolt. After adjusting the angle between the left rocker and the left auxiliary rod, the left rocker and the left auxiliary rod are fixed together by multiple bolts.

4. A rocker assembly adaptable to multiple working conditions according to claim 3, characterized in that: The left rocker arm has a stop sleeve I arranged coaxially with the hinge hole on the outer side of the hinge hole at the end away from the left auxiliary rod. The stop sleeve I has a radial through hole, in which a fastener for restricting the axial movement of the pin is installed.

5. A rocker assembly adaptable to multiple working conditions according to claim 3, characterized in that: The left rocker arm has a stop sleeve II on the outer side of the hinge hole at one end connected to the left auxiliary rod. The stop sleeve II is coaxially arranged with the hinge hole and located in a threaded hole. The stop sleeve II can be embedded in the hinge hole of the left auxiliary rod. The stop sleeve II has a radial through hole, in which a stop pin is installed to limit the axial movement of the pin shaft. The stop pin inserted in the stop sleeve II is radially limited by the inner wall of the hinge hole of the left auxiliary rod.

6. A rocker assembly adaptable to multiple working conditions according to claim 3, characterized in that: The left auxiliary rod has a stop sleeve III arranged coaxially with the hinge hole on the outer side of the hinge hole at the end away from the left rocker arm. The stop sleeve III has a radial through hole, in which a fastener for restricting the axial movement of the pin is installed. The left auxiliary rod has an adjustment pad arranged coaxially with the hinge hole on the inner side of the hinge hole at the end away from the left rocker arm.

7. A rocker assembly adaptable to multiple working conditions according to claim 2, characterized in that: The right rocker arm has a hinge hole at each end, and a ring of evenly spaced threaded holes is provided around the hinge hole at the end of the right rocker arm that is connected to the right auxiliary rod. Each end of the right auxiliary rod is provided with a hinge hole, and the right auxiliary rod is provided with through holes around the hinge hole at the end connected to the right rocker arm, which correspond one-to-one with the threaded holes; A threaded hole and a through hole are matched with a bolt. After adjusting the angle between the right joystick and the right auxiliary rod, the right joystick and the right auxiliary rod are fixed together by multiple bolts.

8. A rocker assembly adaptable to multiple working conditions according to claim 7, characterized in that: The right auxiliary rod has an adjustment pad arranged coaxially with the hinge hole on the inner side of the hinge hole at the end away from the right rocker arm.

9. A rocker assembly adaptable to multiple working conditions according to claim 1, characterized in that: The cross-sections of the left joystick, right joystick, left auxiliary joystick, and right auxiliary joystick are all dumbbell-shaped structures that are wider on both sides and narrower in the middle; The width of the part where the left joystick connects to the left sub-joystick is greater than the width of other parts of the left joystick and the left sub-joystick. The width of the part where the right joystick connects to the right auxiliary joystick is greater than the width of other parts of the right joystick and the right auxiliary joystick.

10. A working device, characterized in that, include: pole; The bucket has one hinge point connected to the front end of the boom; A connecting rod, one end of which is connected to another hinge point of the bucket; The bucket cylinder has one end hinged to the rear end of the boom; The rocker assembly adapted to various working conditions according to any one of claims 1 to 9 is connected in cooperation with the stick, bucket cylinder and connecting rod to complete the switching of bucket forward and reverse shovel.

11. An engineering machinery, characterized in that: The device is equipped with a rocker assembly adapted to various working conditions as described in any one of claims 1 to 9; or, it is equipped with a working device as described in claim 10.

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