Tractor rocker arm lifting angle control device

Abstract

The utility model discloses a tractor rocker arm lifting angle control device which comprises a cylindrical shell, the shell is fixedly connected with a tractor rocker arm, the tractor rocker arm drives the shell to rotate when rotating, and a first travel switch and a second travel switch which are arranged at a certain angle are installed in the shell. A main shaft is rotationally installed at the central axis position of the shell, the main shaft is fixed to a tractor rack through a connecting rod, a shifting rod is fixedly installed at the end, stretching into the shell, of the main shaft, and the shifting rod is located between the first travel switch and the second travel switch. According to the utility model, the two travel switches are arranged in the shell, so that the situation that soil is adhered to the travel switches and cannot work normally is avoided; and the position of the travel switch can be accurately adjusted, and the action range of the agricultural implement can be accurately adjusted.

Description

Technical Field

[0001] The utility model relates to a tractor rocker arm lifting angle control device, belonging to the technical field of tractor rocker arm lifting angle control. Background Art

[0002] Tractors typically use hydraulic hitches to attach agricultural implements for field work. This hydraulic hitch is connected to the tractor's boom, which has a rocker arm attached to its upper end. A hydraulic cylinder drives the rocker arm to swing, raising and lowering the tractor boom, which in turn drives the agricultural implement up and down. The implement is lowered for field work and raised when the tractor is moving across the field.

[0003] In the prior art, travel switches are mechanically installed at the two extreme positions of the rocker arm's lifting and lowering. When the rocker arm reaches the extreme position, it hits the corresponding travel switch, thereby stopping the lifting or lowering. However, the above-mentioned rocker arm lifting angle control method has the following problems: when adjusting the swing range of the rocker arm in the above-mentioned angle control method, the adjustment is generally made through experience or visual observation, and the adjustment is very imprecise, and the operating depth of the agricultural machinery cannot be accurately controlled. On the other hand, the two travel switches are exposed to the outside, and the field working environment is relatively harsh. The travel switches can easily adhere to mud and fail to work normally or even be damaged.

[0004] In summary, the existing technology has obvious inconveniences and defects in actual use, so it is necessary to improve it. Utility Model Content

[0005] In response to the deficiencies in the background technology, the utility model provides a tractor rocker arm lifting angle control device, which arranges two travel switches in a housing to prevent soil from adhering to the travel switches and causing them to malfunction; the position of the travel switches can also be precisely adjusted to achieve accurate adjustment of the range of motion of agricultural machinery.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0007] A tractor rocker arm lifting angle control device includes a cylindrical housing fixedly connected to the tractor rocker arm. When the tractor rocker arm rotates, the housing is driven to rotate. Two first and second travel switches are installed inside the housing at a certain angle.

[0008] A main shaft is rotatably mounted on the central axis of the housing, and the main shaft is fixed to the tractor frame through a connecting rod. A shift lever is fixedly mounted on one end of the main shaft extending into the housing, and the shift lever is located between the first travel switch and the second travel switch.

[0009] Furthermore, the two ends of the connecting rod are respectively a connecting rod fixed end and a connecting rod clamping end, the connecting rod fixed end is fixed on the tractor frame, and the connecting rod clamping end is fixedly connected to the main shaft extending outside the shell.

[0010] Furthermore, a rocker arm adapter is fixed to the back side of the shell, and the rocker arm adapter includes adapter plates arranged at both ends thereof, and the two adapter plates are fixedly connected to the tractor rocker arm.

[0011] Furthermore, a first fixing seat and a second fixing seat are rotatably sleeved on the inner side of the outer shell of the main shaft at a certain angle, the first travel switch is mounted on the first fixing seat, and the second travel switch is mounted on the second fixing seat.

[0012] Furthermore, an adjustment rod is provided at the outer end of each of the first fixing seat and the second fixing seat, and a sliding groove is provided on the side wall of the shell at a corresponding position to each adjustment rod. The adjustment rod extends outward from the sliding groove, and a nut is installed at the outer end of the adjustment rod through a threaded connection, and the first fixing seat and the second fixing seat are fixed by the nut.

[0013] Furthermore, an outer cover plate is provided on the outer side of the sliding groove, the adjusting rod is provided through the outer cover plate, and scales are provided on the outer sides of the outer cover plate and the outer shell.

[0014] Furthermore, a sealing baffle is provided on the inner side of the sliding groove, and the sealing baffle is sleeved on the adjusting rod, and a spring is sleeved on the adjusting rod to make the sealing baffle close to the inner wall of the shell.

[0015] Furthermore, a sealing cover is installed on the shell, and the sealing cover is installed on the shell through threads.

[0016] Compared with the prior art, the present invention has the following advantages after adopting the above technical solution:

[0017] 1. Two first and second travel switches are installed inside the housing at a certain angle. The first travel switch is installed on the first fixing seat, and the second travel switch is installed on the second fixing seat, so as to prevent mud from adhering to the travel switches and causing them to malfunction.

[0018] 2. Move the adjustment lever to change its position in the sliding groove, thereby adjusting the position of the limit switch. An outer cover is provided on the outside of the sliding groove. Both the outer cover and the outer side of the shell are provided with scales. By changing the position of the scale lines on the outer cover and the scale lines on the shell, the lifting angle of the tractor rocker arm can be accurately adjusted, thereby achieving precise adjustment of the range of motion of the agricultural machinery.

[0019] The present invention will be described in detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the back side of the utility model;

[0021] Figure 2 This is a schematic diagram of the structure of the utility model after the sealing cover is hidden;

[0022] Figure 3 This is a structural diagram of the first fixing seat in the utility model;

[0023] Figure 4 It is a schematic diagram of the three-dimensional structure of the upper side of the utility model.

[0024] In the figure,

[0025] 1-connecting rod, 101-connecting rod fixed end, 102-connecting rod clamping end, 2-rocker arm adapter, 201-adapter plate, 3-housing, 301-sliding groove, 4-sealing cover, 5-spindle, 6-shift lever, 7-first fixed seat, 8-second fixed seat, 9-first travel switch, 10-second travel switch, 11-adjusting rod, 12-sealing baffle, 13-spring, 14-nut, 15-outer cover. DETAILED DESCRIPTION

[0026] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation methods of the present invention are now described with reference to the accompanying drawings.

[0027] like Figure 1-2 As shown, the utility model provides a tractor rocker arm lifting angle control device, comprising a cylindrical housing 3, wherein the housing 3 is fixedly connected to the tractor rocker arm. When the tractor rocker arm rotates, the housing 3 is driven to rotate. Two first travel switches 9 and a second travel switch 10 are installed inside the housing 3 at a certain angle.

[0028] A main shaft 5 is rotatably mounted on the central axis of the housing 3 , and the main shaft 5 is fixed to the tractor frame through a connecting rod 1 . A shift lever 6 is fixedly mounted on one end of the main shaft 5 extending into the housing, and the shift lever 6 is located between the first travel switch 9 and the second travel switch 10 .

[0029] The swing of the tractor rocker arm drives the lever 6 to swing. After the lever 6 hits the first travel switch 9 or the second travel switch 10 on one side, the hydraulic cylinder stops driving the tractor rocker arm to swing, so that the agricultural machine stops at a certain position.

[0030] The two ends of the connecting rod 1 are respectively a connecting rod fixed end 101 and a connecting rod clamping end 102. The connecting rod fixed end 101 is fixed on the tractor frame, and the connecting rod clamping end 102 is fixedly connected to the main shaft 5 extending outside the outer shell 3.

[0031] A rocker arm adapter 2 is fixed to the back side of the housing 3 . The rocker arm adapter 2 includes adapter plates 201 provided at both ends thereof. The two adapter plates 201 are fixedly connected to the tractor rocker arm.

[0032] A first fixing seat 7 and a second fixing seat 8 are rotatably mounted on the inner side of the main shaft housing 3 . The first travel switch 9 is mounted on the first fixing seat 7 , and the second travel switch 10 is mounted on the second fixing seat 8 .

[0033] like Figure 3 , the outer ends of the first fixing seat 7 and the second fixing seat 8 are each provided with an adjusting rod 11, and the side wall of the housing 3 is provided with a sliding groove 301 at a position corresponding to each adjusting rod 11, such as Figure 4 The adjusting rod 11 extends outward from the sliding slot 301. A nut 14 is threadedly mounted on the outer end of the adjusting rod 11, securing the first fixing seat 7 and the second fixing seat 8. By loosening the nut 14 and moving the adjusting rod 11, the position of the adjusting rod 11 within the sliding slot 301 can be changed, thereby adjusting the position of the limit switch.

[0034] An outer cover plate 15 is provided on the outside of the sliding groove 301, and the adjustment rod 11 is provided through the outer cover plate 15. The outer sides of the outer cover plate 15 and the outer shell 3 are both provided with scales. The lifting angle of the tractor rocker arm can be accurately adjusted by changing the position of the scale lines of the outer cover plate 15 and the scale lines of the outer shell 3.

[0035] A sealing baffle 12 is provided on the inner side of the sliding groove 301, and the sealing baffle 12 is sleeved on the adjusting rod 11. The adjusting rod 11 is sleeved with a spring 13, so that the sealing baffle 12 is close to the inner wall of the shell 3, so that the sealing baffle 12 plays a sealing role to prevent dust from entering the shell 3.

[0036] like Figure 4 A sealing cover 4 is also installed on the shell 3, and the sealing cover is installed on the shell 3 through threads.

[0037] The specific working principle of this utility model:

[0038] The device is fixed to the tractor frame via a connecting rod 1. The connecting rod clamping end 102 of the connecting rod 1 is fixed with a main shaft 5, and a shift lever 6 is fixed to the main shaft 5. The housing 3 is fixed to the tractor rocker arm via a rocker arm adapter 2. The housing 3 rotates with the tractor rocker arm, while the main shaft 5 remains stationary.

[0039] The housing 3 is internally provided with two first travel switches 9 and a second travel switch 10 which are arranged at a certain angle. The first travel switch 9 is mounted on the first fixing seat 7 and the second travel switch 10 is mounted on the second fixing seat 8, so as to prevent the soil from adhering to the travel switches and causing them to malfunction.

[0040] Loosen the nut 14, move the adjusting rod 11, and change the position of the adjusting rod 11 in the sliding groove 301, so as to adjust the position of the limit switch. An outer cover plate 15 is provided on the outside of the sliding groove 301. The outer side of the outer cover plate 15 and the outer side of the shell 3 are both provided with scales. By changing the position of the scale lines of the outer cover plate 15 and the scale lines of the shell 3, the lifting angle of the tractor rocker arm can be accurately adjusted, thereby realizing precise adjustment of the range of motion of the agricultural machinery.

[0041] The above description is merely an example of the preferred embodiment of the present invention. Any details not described in detail are common knowledge within the art. The scope of protection of the present invention is determined by the claims. Any equivalent modifications based on the technical teachings of the present invention are also within the scope of protection of the present invention.

Claims

1. A tractor rocker arm lifting angle control device, characterized in that: The invention comprises a cylindrical housing (3), wherein the housing (3) is fixedly connected to the tractor rocker arm, and when the tractor rocker arm rotates, the housing (3) is driven to rotate, and two first travel switches (9) and a second travel switch (10) arranged at a certain angle are installed inside the housing (3); A main shaft (5) is rotatably mounted on the central axis of the housing (3); the main shaft (5) is fixed to the tractor frame via a connecting rod (1); a shift lever (6) is fixedly mounted on one end of the main shaft (5) extending into the housing; the shift lever (6) is located between a first travel switch (9) and a second travel switch (10).

2. A tractor rocker arm lifting angle control device according to claim 1, characterized in that: The two ends of the connecting rod (1) are respectively a connecting rod fixed end (101) and a connecting rod clamping end (102); the connecting rod fixed end (101) is fixed on the tractor frame; the connecting rod clamping end (102) is fixedly connected to a main shaft (5) extending outside the housing (3).

3. The tractor rocker arm lifting angle control device according to claim 1, characterized in that: A rocker arm adapter (2) is fixed to the back side of the housing (3), and the rocker arm adapter (2) comprises adapter plates (201) arranged at both ends thereof, and the two adapter plates (201) are fixedly connected to the tractor rocker arm.

4. The tractor rocker arm lifting angle control device according to claim 1, characterized in that: A first fixed seat (7) and a second fixed seat (8) are rotatably mounted on the inner side of the main shaft housing (3) at a certain angle. The first travel switch (9) is mounted on the first fixed seat (7), and the second travel switch (10) is mounted on the second fixed seat (8).

5. A tractor rocker arm lifting angle control device according to claim 4, characterized in that: An adjusting rod (11) is provided at the outer end of each of the first fixing seat (7) and the second fixing seat (8); a sliding groove (301) is provided on the side wall of the housing (3) at a position corresponding to each adjusting rod (11); the adjusting rod (11) extends outward from the sliding groove (301); a nut (14) is installed at the outer end of the adjusting rod (11) through a threaded connection, and the first fixing seat (7) and the second fixing seat (8) are fixed by the nut (14).

6. A tractor rocker arm lifting angle control device according to claim 5, characterized in that: An outer cover plate (15) is provided on the outside of the sliding groove (301), and the adjustment rod (11) is arranged through the outer cover plate (15). The outer sides of the outer cover plate (15) and the outer shell (3) are both provided with scales.

7. The tractor rocker arm lifting angle control device according to claim 5, characterized in that: A sealing baffle (12) is provided inside the sliding groove (301), and the sealing baffle (12) is sleeved on the adjusting rod (11). The adjusting rod (11) is sleeved with a spring (13) so that the sealing baffle (12) is close to the inner wall of the shell (3).

8. The tractor rocker arm lifting angle control device according to claim 1, characterized in that: A sealing cover (4) is also installed on the housing (3), and the sealing cover is installed on the housing (3) through threads.

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