Walking clutch and brake integrated control mechanism of self-walking crawler-type rotary cultivator

Abstract

The invention discloses a walking clutch and brake integrated control mechanism of a self-walking crawler-type rotary cultivator, which comprises a walking gearbox, a brake drum assembly and an operating handle, and is characterized in that the brake drum assembly comprises a shell, an end cover, a brake drum, a brake shoe and a brake cam; the brake cam is connected with a cam brake shaft, and the cam brake shaft penetrates through the end cover; a transmission assembly is arranged on the side, away from the walking gearbox, of the brake drum and provided with an upper supporting arm, a rear supporting arm and a lower supporting arm. A transmission plate is arranged on the operating handle and is connected with the rear support arm of the transmission assembly; an upper supporting arm of the transmission assembly is connected with a shifting fork transmission arm through a clutch inhaul cable; a reset support is further arranged behind the transmission assembly, and a reset spring is arranged between the upper supporting arm and the reset support. By means of the integrated design, a walking clutch and a walking brake are integrated on one operating rod, misoperation is avoided, and safety can be greatly improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of track rotary cultivators, in particular to a self-propelled track rotary cultivator walking clutch and brake integrated control mechanism. BACKGROUND

[0002] With the development of society, agricultural cultivation is more and more mechanized, especially in large-scale cultivation, the popularity of mechanization is very high. For the plain area, the current agricultural cultivation machinery is also used more and more, such as track rotary cultivator, especially with the development of technology, for mountainous area, hilly area, etc., the popularity of track rotary cultivator is also higher and higher.

[0003] However, the current track rotary cultivator has many operation levers, including walking clutch operation lever, brake operation lever or pedal, walking gear operation lever, forward and backward operation lever, implement clutch operation lever and implement lifting operation lever; this causes the operation to be more complex during driving, and even easy to cause misoperation, especially for walking clutch and walking brake, if the operation sequence is wrong, it may cause the engine to stall, affect the driving experience, and there is a certain safety hazard.

[0004] Therefore, how to simplify the walking clutch and brake operation structure of the track rotary cultivator, make the operation more convenient, have better driving experience, and have higher safety has become a technical problem urgently to be solved by the technical personnel in the field. SUMMARY

[0005] In view of the above problems existing in the prior art, the purpose of the present application is to solve the problems of too many operation mechanisms of the existing track rotary cultivator, complicated operation, easy to produce misoperation and safety hazard, provide a self-propelled track rotary cultivator walking clutch and brake integrated control mechanism, which can realize synchronous control of clutch and brake by integrated design, so as to realize synchronous control of clutch and brake, greatly simplify the structure, and also make the operation more convenient, avoid the production of misoperation, and also can greatly improve the safety.

[0006] In order to solve the above technical problems, the technical scheme adopted by the present application is as follows: a self-propelled caterpillar rotary cultivator walking clutch and brake integrated control mechanism, comprising a walking gearbox, a brake drum assembly and an operating handle, the walking gearbox has an input shaft, a main clutch assembly, a main clutch yoke shaft, a main transmission gear set and two output half shafts; wherein the main clutch assembly is close to the rear side of the walking gearbox, the output half shaft is close to the front side of the walking gearbox, one end of the main clutch yoke shaft is connected with the clutch yoke, and the other end extends out of the gearbox and is connected with the yoke transmission arm; characterized in that: an intermediate gear shaft is arranged between the gear position adjusting gear set and the two output half shafts, and the main transmission gear set is in transmission connection with the two output half shafts through the intermediate gear shaft; one end of the intermediate gear shaft extends out of the gearbox body, the brake drum assembly comprises a shell, an end cover, a brake drum, brake shoes and a brake cam; the shell is fixedly connected with the gearbox body, the brake drum is sleeved on one end of the intermediate gear shaft extending out of the gearbox body and is fixedly connected with the intermediate gear shaft; the brake cam is connected with a cam brake shaft, one end of the cam brake shaft is fixedly connected with the brake cam, and the other end penetrates through the end cover and is in rotational connection with the end cover; a transmission assembly is arranged on the side of the brake drum away from the walking gearbox, the transmission assembly has an upper arm, a rear arm and a lower arm, wherein the upper arm and the rear arm are located above the lower arm, and the lower arm is fixedly connected with the cam brake shaft; the operating handle is connected with the gearbox body through a mounting bracket and is in rotational connection with the mounting bracket, and the operating handle is located on the front side of the brake drum assembly; a transmission plate is arranged on the operating handle, one end of the transmission plate is fixedly connected with the operating handle, and the other end is connected with the rear arm of the transmission assembly through a clutch pull rod; the upper arm of the transmission assembly is connected with the yoke transmission arm through a clutch cable; a reset bracket is further arranged behind the transmission assembly, and a reset spring is arranged between the upper arm and the reset bracket.

[0007] Further, a secondary transmission gear set is further arranged between the intermediate gear shaft and the output half shaft, and the intermediate gear shaft is in transmission connection with the two output half shafts through the secondary transmission gear set; wherein the secondary transmission gear set is connected with the two output half shafts through two steering clutch assemblies.

[0008] Further, the distance between the connection position of the reset spring and the upper arm and the cam brake shaft is less than the distance between the connection position of the clutch cable and the upper arm and the cam brake shaft.

[0009] Further, a cable seat is arranged on the yoke transmission arm, one end of the clutch cable is in rotational connection with the upper arm, and the other end is connected with the cable seat through a compensation sleeve; the compensation sleeve comprises a sleeve body, the front end of the sleeve body is fixedly connected with the cable seat, and the other end of the clutch cable penetrates through the sleeve body and is connected with a limiting cable clamp.

[0010] Further, one end of the reset spring is connected with the upper supporting arm, and the other end is connected with the reset support through an adjusting screw rod.

[0011] Further, one end of the clutch pull rod is rotatably connected with the transmission plate, and the other end is connected with the rear supporting arm through a pull spring.

[0012] Further, an adjusting bolt is arranged between the clutch pull rod and the pull spring, one end of the adjusting bolt is fixedly connected with the clutch pull rod, and the other end is fixedly connected with the pull spring.

[0013] Further, a limiting rod is arranged at the rear side of the transmission plate, the limiting rod is fixedly connected with the mounting support; in the initial state, the transmission plate is tightly attached to the limiting rod under the action of the pull spring.

[0014] Further, a limiting plate is arranged at the front side of the transmission assembly, when the operating handle is rotated forward, the transmission plate drives the transmission assembly to rotate, and the transmission assembly can be attached to the limiting plate.

[0015] Compared with the prior art, the present application has the following advantages: the operating handle of the walking clutch and the brake is integrated, the walking clutch and the walking brake can be integrated on one operating rod through integrated design, thereby realizing synchronous control of the clutch and the brake, greatly simplifying the structure, and making the operation more convenient, avoiding the generation of misoperation, and greatly improving the safety. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a structural schematic view of the present application.

[0017] Figure 2 It is a structural schematic view of the present application from another angle.

[0018] In the figure: 1 - walking gearbox, 2 - brake drum assembly, 3 - operating handle, 4 - shift fork transmission arm, 5 - cam brake shaft, 6 - transmission assembly, 7 - mounting support, 8 - transmission plate, 9 - clutch pull rod, 10 - clutch cable, 11 - reset support, 12 - reset spring, 13 - compensation sleeve, 14 - adjusting screw rod, 15 - pull spring, 16 - adjusting bolt, 17 - limiting rod, 18 - limiting plate. DETAILED DESCRIPTION

[0019] The present application will be further described below in combination with the drawings and examples.

[0020] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some but not all of the embodiments of the present application. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of the present application.

[0021] It should be noted that similar reference numerals and letters refer to like items in the following drawings, and therefore, once an item is defined in one drawing, it need not be further defined and explained in subsequent drawings. In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present application is usually placed during use, and are merely for the convenience of describing the present application and simplifying the description, and therefore, cannot be construed as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, cannot be construed as limiting the present application. In addition, the terms "first", "second", "third", and the like are merely used to distinguish the description and cannot be construed as indicating or implying relative importance. In addition, the terms "horizontal", "vertical", and the like do not mean that the components must be absolutely horizontal or vertical, but can be slightly inclined. For example, "horizontal" only means that its direction is relatively more horizontal than "vertical", and does not mean that the structure must be absolutely horizontal, but can be slightly inclined. In the description of the present application, it should also be noted that unless otherwise explicitly specified and limited, the terms "arranged", "mounted", "connected", "linked", and the like should be interpreted broadly, for example, can be fixedly connected, can be detachably connected, or integrally connected; can be mechanically connected, or electrically connected; can be directly connected, or indirectly connected through an intermediate medium; and can be internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0022] Embodiment: see Figure 1 , Figure 2The utility model relates to a self-propelled caterpillar rotary cultivator walking clutch and brake integrated control mechanism, including walking gearbox 1, brake drum assembly 2 and operating handle 3. Walking gearbox 1 has input shaft, main clutch assembly, main clutch yoke shaft, main transmission gear group and two output half shafts. In the scheme, walking gearbox 1 is located at the front end of rotary cultivator frame and below the seat during assembly. After the assembly of walking gearbox 1, main clutch assembly is close to the rear side of walking gearbox 1, and output half shaft is close to the front side of walking gearbox 1. One end of main clutch yoke shaft is connected with clutch yoke, and the other end extends out of the gearbox and is connected with yoke transmission arm 4. Intermediate gear shaft is arranged between gear group and two output half shafts, and main transmission gear group is connected with two output half shafts through intermediate gear shaft. In order to make the whole walking gearbox 1 can output more gear, vice transmission gear group is further arranged between intermediate gear shaft and output half shaft, and intermediate gear shaft is connected with two output half shafts through vice transmission gear group. Wherein, vice transmission gear group is connected with two output half shafts through two steering clutch assemblies.

[0023] One end of intermediate gear shaft extends out of the box body of gearbox, and brake drum assembly 2 includes shell, end cover, brake drum, brake shoe and brake cam. The shell is fixedly connected with the box body of gearbox, the brake drum is sleeved on one end of intermediate gear shaft extending out of the box body and is fixedly connected with intermediate gear shaft. In actual production, the brake drum is connected with intermediate gear shaft through spline cooperation. The brake cam is connected with a cam brake shaft 5, one end of the cam brake shaft 5 is fixedly connected with the brake cam, and the other end penetrates through the end cover and is rotatably connected with the end cover.

[0024] A transmission assembly 6 is arranged on the side of brake drum away from walking gearbox 1, and the transmission assembly 6 has upper arm, rear arm and lower arm. The upper arm and rear arm are above the lower arm, and the lower arm is fixedly connected with the cam brake shaft 5.

[0025] The operation handle 3 is connected with the box body of the traveling gearbox 1 through the mounting bracket 7 and is rotationally connected with the mounting bracket 7, and the operation handle 3 is located at the front side of the brake drum assembly 2. An transmission plate 8 is arranged on the operation handle 3, one end of the transmission plate 8 is fixedly connected with the operation handle 3, so that the transmission plate 8 can rotate synchronously with the operation handle 3 in the rotating process of the operation handle 3. The other end of the transmission plate 8 is connected with the rear supporting arm of the transmission assembly 6 through a clutch pull rod 9. In the implementation, one end of the clutch pull rod 9 is rotationally connected with the transmission plate 8, and the other end is connected with the rear supporting arm through a pull spring 15. A limiting rod 17 is arranged at the rear side of the transmission plate 8, the limiting rod 17 is fixedly connected with the mounting bracket 7; in the initial state, the transmission plate 8 is tightly attached to the limiting rod 17 under the action of the pull spring 15. In the implementation, an adjusting bolt 16 is further arranged between the clutch pull rod 9 and the pull spring 15, one end of the adjusting bolt 16 is fixedly connected with the clutch pull rod 9, and the other end is fixedly connected with the pull spring 15, so that the distance between the clutch pull rod 9 and the pull spring 15 can be adjusted through the adjusting bolt 16, so as to adjust the initial pre-tightening force of the pull spring 15. Specifically, the adjusting bolt 16 comprises an adjusting nut, one end of the adjusting nut is threadedly connected with the clutch pull rod 9, and the other end is connected with a lead screw, and the pull spring 15 is connected with the end of the lead screw away from the adjusting nut; rotating the adjusting nut can make the clutch pull rod 9 and the lead screw move towards each other or away from each other. In order to ensure the stability after adjustment, limiting nuts are arranged on the clutch pull rod 9 and the lead screw.

[0026] The upper supporting arm of the transmission assembly 6 is connected with the shift fork transmission arm 4 through a clutch pull cable 10; in the implementation, a cable seat is arranged on the shift fork transmission arm 4, one end of the clutch pull cable 10 is rotationally connected with the upper supporting arm, and the other end is connected with the cable seat through a compensation sleeve 13. The compensation sleeve 13 comprises a pipe body, the front end of the pipe body is fixedly connected with the cable seat, and the other end of the clutch pull cable 10 passes through the pipe body and is connected with a limiting cable clamp; by adjusting the length of the clutch pull cable 10 passing through the pipe body, the initial position of the shift fork transmission arm 4 can be adjusted, and the stability of the combination sequence of the brake and the clutch during operation can be ensured.

[0027] A reset bracket 11 is further arranged behind the transmission assembly 6 and is fixedly connected with the gearbox body. A reset spring 12 is arranged between the upper supporting arm and the reset bracket 11. In implementation, one end of the reset spring 12 is connected with the upper supporting arm, and the other end is connected with the reset bracket 11 through an adjusting screw rod 14. One end of the reset spring 12 is connected with one end of the adjusting screw rod 14, and the other end of the adjusting screw rod 14 is locked and fixed with the bracket through two locking nuts after penetrating through the reset bracket 11. The two locking nuts are arranged on the two sides of the reset bracket 11 and are connected in threaded cooperation with the adjusting screw rod 14; the initial prestress of the reset spring 12 can be adjusted by adjusting the length of the adjusting screw rod 14 penetrating through the reset bracket 11. As an implementation manner, the distance between the connection position of the reset spring 12 and the upper supporting arm and the cam brake shaft 5 is less than the distance between the connection position of the clutch cable 10 and the upper supporting arm and the cam brake shaft 5, so that the cam brake shaft 5 can be quickly reset, and the clutch is combined after the brake is loosened. In the implementation process, a limiting plate 18 is further arranged on the front side of the transmission assembly 6, and when the operating handle 3 is rotated forward, the transmission plate 8 drives the transmission assembly 6 to rotate, and the transmission assembly 6 can be attached to the limiting plate 18.

[0028] In the initial state, under the action of the reset spring 12 and the tension spring 15, the operating handle 3 and the transmission plate 8 are in the upward or rearward state, at this time, the main clutch assembly is in the separated state, and the brake drum is in the braking state. When the operating handle 3 is rotated downward, the transmission plate 8 is synchronously rotated, first drives the cam brake shaft 5 to rotate through the tension spring 15, so that the brake is loosened, and after continuous rotation, the upper supporting arm of the transmission assembly 6 overcomes the tension of the reset spring 12, drives the clutch transmission arm to rotate through the clutch cable 10, so that the main clutch assembly is combined, and the rotary tiller is in the walking state. The control of the brake braking and the walking clutch can be completed through the operating handle 3, which is convenient, fast, and effectively avoids the generation of misoperation, and the safety is higher.

[0029] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application rather than limit the technical solutions, and those of ordinary skill in the art should understand that the technical solutions of the present application can be modified or replaced equivalently without departing from the purpose and scope of the technical solutions, which should be covered in the scope of claims of the present application.

Claims

1. A self-propelled crawler rotary cultivator walking clutch and brake integrated control mechanism, comprising a walking gearbox, a brake drum assembly and an operating handle, the walking gearbox has an input shaft, a main clutch assembly, a main clutch shift lever shaft, a main gearbox gear set and two output half shafts; wherein, The main clutch assembly is close to the rear side of the traveling gearbox, the output half shaft is close to the front side of the traveling gearbox, one end of the main clutch yoke is connected with the clutch yoke, and the other end extends out of the traveling gearbox and is connected with the yoke transmission arm; characterized in that: an intermediate gear shaft is arranged between the gear group and the two output half shafts, and the main gear group is connected with the two output half shafts through the intermediate gear shaft; one end of the intermediate gear shaft extends out of the box body of the traveling gearbox, the brake drum assembly comprises a shell, an end cover, a brake drum, brake shoes and a brake cam; the shell is fixedly connected with the box body of the traveling gearbox, the brake drum is sleeved on one end of the intermediate gear shaft extending out of the box body and is fixedly connected with the intermediate gear shaft; the brake cam is connected with a cam brake shaft, one end of the cam brake shaft is fixedly connected with the brake cam, and the other end penetrates through the end cover and is rotatably connected with the end cover; a transmission assembly is arranged on the side of the brake drum away from the traveling gearbox, the transmission assembly has an upper supporting arm, a rear supporting arm and a lower supporting arm, wherein the upper supporting arm and the rear supporting arm are located above the lower supporting arm, and the lower supporting arm is fixedly connected with the cam brake shaft; The operating handle is connected with the box body of the traveling gearbox through a mounting bracket and is rotatably connected with the mounting bracket, and the operating handle is located on the front side of the brake drum assembly; a transmission plate is arranged on the operating handle, one end of the transmission plate is fixedly connected with the operating handle, and the other end is connected with the rear supporting arm of the transmission assembly through a clutch pull rod; The upper supporting arm of the transmission assembly is connected with the yoke transmission arm through a clutch pull cable; a reset bracket is further arranged behind the transmission assembly, and a reset spring is arranged between the upper supporting arm and the reset bracket.

2. The self-propelled crawler rotary cultivator walking clutch and brake integrated control mechanism according to claim 1, characterized in that: A secondary gear group is further arranged between the intermediate gear shaft and the output half shaft, and the intermediate gear shaft is connected with the two output half shafts through the secondary gear group; wherein the secondary gear group is connected with the two output half shafts through two steering clutch assemblies.

3. The self-propelled crawler rotary cultivator walking clutch and brake integrated control mechanism according to claim 1, characterized in that: The distance between the connection position of the reset spring and the upper supporting arm and the cam brake shaft is less than the distance between the connection position of the clutch pull cable and the upper supporting arm and the cam brake shaft.

4. The self-propelled crawler rotary cultivator walking clutch and brake integrated control mechanism according to claim 1, characterized in that: A cable seat is arranged on the yoke transmission arm, one end of the clutch pull cable is rotatably connected with the upper supporting arm, and the other end is connected with the cable seat through a compensation sleeve; the compensation sleeve comprises a sleeve body, the front end of the sleeve body is fixedly connected with the cable seat, and the other end of the clutch pull cable penetrates through the sleeve body and is connected with a limiting cable clamp.

5. The self-propelled crawler rotary cultivator walking clutch and brake integrated control mechanism according to claim 1, characterized in that: One end of the reset spring is connected with the upper supporting arm, and the other end is connected with the reset bracket through an adjusting screw rod.

6. The self-propelled crawler rotary cultivator walking clutch and brake integrated control mechanism according to claim 1, characterized in that: One end of the clutch pull rod is rotatably connected with the transmission plate, and the other end is connected with the rear supporting arm through a pull spring.

7. The self-propelled crawler rotary cultivator walking clutch and brake integrated control mechanism according to claim 6, characterized in that: An adjusting bolt is further arranged between the clutch pull rod and the pull spring, one end of the adjusting bolt is fixedly connected with the clutch pull rod, and the other end is fixedly connected with the pull spring.

8. The self-propelled crawler rotary cultivator walking clutch and brake integrated control mechanism according to claim 1, characterized in that: A limiting rod is arranged on the rear side of the transmission plate, the limiting rod is fixedly connected with the mounting bracket; in the initial state, the transmission plate and the limiting rod are tightly attached together under the action of the pull spring.

9. The self-propelled crawler rotary cultivator walking clutch and brake integrated control mechanism according to claim 1, characterized in that: A limiting plate is further arranged on the front side of the transmission assembly, when the operating handle is rotated forward, the transmission plate drives the transmission assembly to rotate, and the transmission assembly can be attached with the limiting plate.

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