Protection device arranged on gear box and used for protecting end executive component

Abstract

The utility model provides a protection device arranged on a gear box and used for protecting an end executive component, and belongs to the technical field of gear boxes. The protection device arranged on the gearbox and used for protecting the end executive component comprises a box body, a gearbox output shaft is installed at the top of the box body, a load output end and a clutch block are sequentially installed on the surface of the gearbox output shaft from bottom to top, a spring is installed at the top of the clutch block, and the clutch block is connected with the gearbox output shaft. The clutch block can be installed on the output shaft of the gear box at the load output end, the load output end is located below the clutch block, the clutch block generates friction force with the load output end through pressure released by stored potential energy of the spring, and the clutch block is arranged on the gear box, so that the load output end can be prevented from falling off, and the service life of the clutch block is prolonged. When the gear box output shaft drives the clutch block to rotate, the load output end rotates along with the gear box output shaft, and when the load of the load output end exceeds a design value, the clutch block and the load output end slide relatively, so that the gear box is protected from being damaged.

Description

Technical Field

[0001] The utility model relates to the technical field of gear boxes, in particular to a protection device arranged on a gear box for protecting an end actuator. Background Art

[0002] Corn harvester is an agricultural machine that uses machinery to complete multiple operations of corn picking, stacking, and returning the stalks to the field at one time when the corn is mature. The corn harvesting process is as follows: Use a corn harvester to pick the ears while the corn is growing. Under the action of the ear picking roller and the ear picking plate, the ear stalk is pulled off. Due to the height difference between the inner and outer picking rollers, the ears fall into the ear box. After the ears are full, the box is opened and stacked. The high-speed rotating cutter cuts off the straw from the root and enters the crushing mechanism to be chopped into 3-5CM long pieces. After chopped, the straw falls to the ground naturally, and then the ears are transported to the field, peeled with a peeling machine, and threshed after drying. Among them, the gear box is an important mechanical component that is widely used in corn harvesters. Its main function is to transmit the power driven by the corn harvester to the ear picking shaft, and then harvest the corn.

[0003] However, in the prior art, when the gearbox is not in a clutched state, the load output end is overloaded during operation, causing damage to the gearbox output shaft and the gearbox body. When the clutch is engaged, the clutch block is installed below the gearbox output shaft, resulting in an increase in installation space, an increase in the volume of components, and an increase in cost. Utility Model Content

[0004] In order to make up for the above deficiencies, the present invention provides a protection device provided on a gear box to protect an end actuator, which overcomes the above technical problems or at least partially solves the above problems.

[0005] The utility model is achieved in this way:

[0006] The utility model provides a protective device arranged on a gear box to protect an end actuator, comprising a box body, a gear box output shaft being mounted on the top of the box body, a load output end and a clutch block being mounted on the surface of the gear box output shaft in sequence from bottom to top, a spring being mounted on the top of the clutch block, and a small dust cap and a large dust cap being mounted on the top of the clutch block in sequence from bottom to top.

[0007] In a preferred embodiment, the inner cavity of the box body is equipped with left and right picking shafts extending to the outside of the box body, and both sides of the box body are equipped with end covers that are sleeved on the surfaces of the left and right picking shafts, and the end covers are installed on both sides of the box body through elastic washers and hexagonal head bolts.

[0008] In a preferred embodiment, a single-row sprocket is installed on the right end of the left and right picking shafts, a double-row sprocket is provided on the left side of the surface of the left and right picking shafts, and the double-row sprocket is installed on the surface of the left and right picking shafts through a tightening bolt and a first nut.

[0009] In a preferred solution, a gear box rear cover is provided on the back of the box body, and the four corners of the back of the gear box rear cover are mounted on the back of the box body through elastic washers and hexagonal bolts.

[0010] In a preferred solution, ball joints are installed on both sides of the front of the box body, a first sub-gear is provided on both sides of the front of the box body, and the ball joint is arranged on the front side of the surface of the first sub-gear.

[0011] In a preferred solution, a transmission pin is provided on the outer side of the ball joint, and the transmission pin passes through the inner side of the ball joint, and a second nut is installed on the surface of the transmission pin.

[0012] In a preferred solution, a second sub-gear is installed at the bottom of the gearbox output shaft, and a first deep groove ball bearing is installed at the bottom of the surface of the second sub-gear, and an O-ring is installed at the bottom of the first deep groove ball bearing.

[0013] In a preferred embodiment, second deep groove ball bearings connected to the inner wall of the box are installed on both sides of the left and right picking shaft surfaces, and a retaining ring is installed on the outside of the second deep groove ball bearing, and an oil seal located on the inside of the end cover is installed on the outside of the retaining ring.

[0014] The utility model provides a protection device provided on a gear box to protect an end actuator, and its beneficial effects include:

[0015] 1. By arranging the load output end, the gearbox output shaft, the clutch block and the spring, the load output end and the clutch block can be installed on the gearbox output shaft with the load output end below the clutch block. The pressure released by the stored potential energy of the spring generates friction with the load output end. When the gearbox output shaft drives the clutch block to rotate, the load output end rotates accordingly. When the load at the load output end exceeds the design value, the clutch block and the load output end slide relative to each other, thereby protecting the gearbox from damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 This is a schematic diagram of the main cross-sectional structure of the box provided by the embodiment of the utility model;

[0018] Figure 2 A schematic diagram of a top-view cross-sectional structure of a box provided in an embodiment of the present utility model;

[0019] In the figure: 1. Box body; 2. Gearbox output shaft; 3. Load output end; 4. Clutch block; 5. Spring; 6. Small dust cap; 7. Large dust cap; 8. Left and right picking shafts; 9. End cover; 10. Single-row sprocket; 11. Double-row sprocket; 12. Gearbox rear cover; 13. Ball joint; 14. First sub-gear; 15. Drive pin; 16. Second nut; 17. Second sub-gear; 18. First deep groove ball bearing; 19. O-ring; 20. Second deep groove ball bearing; 21. Retaining ring; 22. Oil seal. DETAILED DESCRIPTION

[0020] Reference Figure 1-Figure 2 When the gearbox output shaft 2 is driven by the clutch block 4, the clutch block 4 is provided with a plurality of springs, and the clutch block 4 is provided with a plurality of springs.

[0021] Reference Figure 1-Figure 2 In a preferred embodiment, the inner cavity of the box body 1 is equipped with left and right picking shafts 8 extending to the outside of the box body 1, and end covers 9 are installed on the surfaces of the left and right picking shafts 8 on both sides of the box body 1, and the end covers 9 are installed on both sides of the box body 1 through elastic washers and hexagonal head bolts. A single-row sprocket 10 is installed on the right end of the left and right picking shafts 8, and a double-row sprocket 11 is provided on the left side of the surface of the left and right picking shafts 8, and the double-row sprocket 11 is installed on the surface of the left and right picking shafts 8 by tightening bolts and first nuts. After the left and right picking shafts 8 are installed, the end covers 9 can be installed to limit the left and right picking shafts 8, so that when the left and right picking shafts 8 are started, they respectively drive the single-row sprocket 10 and the double-row sprocket 11 at both ends to drive.

[0022] In addition, second deep groove ball bearings 20 connected to the inner wall of the box body 1 are installed on both sides of the surface of the left and right picking shafts 8, and a retaining ring 21 is installed on the outside of the second deep groove ball bearing 20, and an oil seal 22 located on the inside of the end cover 9 is installed on the outside of the retaining ring 21. After the second deep groove ball bearing 20 is installed, it can be started to limit the left and right picking shafts 8, and the second deep groove ball bearing 20 can reduce the resistance caused by the equipment itself to the rotation of the left and right picking shafts 8, and the installed retaining ring 21 and oil seal 22 can play a sealing role to prevent the lubricating oil in the box body 1 from flowing out, and can also prevent impurities and dust from entering.

[0023] Reference Figure 1-Figure 2 In a preferred embodiment, a gear box rear cover 12 is provided on the back of the box body 1, and the four corners of the back of the gear box rear cover 12 are installed on the back of the box body 1 through elastic washers and hexagonal head bolts. By setting the elastic washers between the gear box rear cover 12 and the hexagonal head bolts, a sealing effect can be achieved, so that the hexagonal head bolts can install the gear box rear cover 12 more tightly.

[0024] Reference Figure 1-Figure 2 In a preferred embodiment, ball joints 13 are installed on both sides of the front of the box body 1, and first sub-gears 14 are provided on both sides of the front of the box body 1, and the ball joints 13 are arranged on the front side of the surface of the first sub-gear 14, and a transmission pin 15 is provided on the outside of the ball joint 13, and the transmission pin 15 passes through the inner side of the ball joint 13, and a second nut 16 is installed on the surface of the transmission pin 15, which can be fixed by the second nut 16, and a second sub-gear 17 is installed at the bottom of the gearbox output shaft 2, and a first deep groove ball bearing 18 is installed at the bottom of the surface of the second sub-gear 17, and an O-ring 19 is installed at the bottom of the first deep groove ball bearing 18, which can reduce the direct friction of the structure by installing the second deep groove ball bearing 20, and then the second deep groove ball bearing 20 and the O-ring 19 cooperate to seal the gap to prevent the internal oil leakage of the equipment when in use.

[0025] Specifically, the working process or working principle of the protection device provided on the gear box for protecting the end actuator is as follows: when in use, first install the load output end 3 and the clutch block 4 to the gear box output shaft 2 in sequence, and install the spring 5 to the inner side of the small dust cap 6 and the large dust cap 7, then install the second deep groove ball bearing 20 and the retaining ring 21 in sequence, and install the oil seal 22 to the outer side of the retaining ring 21, install the end cover 9 by using the hexagonal head bolts, and then pass the left and right picking shafts 8 through the end cover 9 and the second deep groove ball bearing 20, and then The left and right ear-picking shafts 8 are installed in the box body 1, and the double-row sprocket 11 is installed to the left end of the left and right ear-picking shafts 8 by tightening bolts and first nuts, and the single-row sprocket 10 is installed to the right end of the left and right ear-picking shafts 8. When the equipment is in operation, when the gearbox output shaft 2 drives the clutch block 4 to rotate, the load output end 3 rotates accordingly. When the load at the load output end 3 exceeds the design value, the clutch block 4 and the load output end 3 slide relative to each other, thereby protecting the gearbox from damage. Moreover, the load output end 3 is arranged below the clutch block 4, which saves installation space and reduces material costs.

Claims

1. A protection device provided on a gear box for protecting an end actuator, comprising a box body (1), characterized in that; A gearbox output shaft (2) is mounted on the top of the housing (1), a load output end (3) and a clutch block (4) are mounted on the surface of the gearbox output shaft (2) in sequence from bottom to top, a spring (5) is mounted on the top of the clutch block (4), and a small dust cap (6) and a large dust cap (7) are mounted on the top of the clutch block (4) in sequence from bottom to top.

2. A protection device for protecting an end effector provided on a gear box according to claim 1, characterized in that: The inner cavity of the box body (1) is provided with left and right ear-picking shafts (8) extending to the outside of the box body (1), and both sides of the box body (1) are provided with end covers (9) sleeved on the surfaces of the left and right ear-picking shafts (8), and the end covers (9) are installed on both sides of the box body (1) through elastic washers and hexagonal bolts.

3. The protective device for protecting the end effector provided on the gear box according to claim 2, characterized in that: A single-row sprocket (10) is installed at the right end of the left and right ear picking shafts (8), and a double-row sprocket (11) is provided on the left side of the surface of the left and right ear picking shafts (8). The double-row sprocket (11) is installed on the surface of the left and right ear picking shafts (8) through a fastening bolt and a first nut.

4. The protective device for protecting the end effector provided on the gear box according to claim 1, characterized in that: A gear box rear cover (12) is provided on the back of the box body (1), and the four corners of the back of the gear box rear cover (12) are mounted on the back of the box body (1) via elastic washers and hexagonal bolts.

5. A protection device for protecting an end effector provided on a gearbox according to any one of claims 1 to 4, characterized in that: Ball joints (13) are installed on both sides of the front of the box body (1), a first sub-gear (14) is provided on both sides of the front of the box body (1), and the ball joints (13) are arranged on the front side of the surface of the first sub-gear (14).

6. The protection device for protecting the end effector provided on the gear box according to claim 5, characterized in that: A transmission pin (15) is provided on the outside of the ball joint (13), and the transmission pin (15) penetrates the inside of the ball joint (13), and a second nut (16) is installed on the surface of the transmission pin (15).

7. The protection device for protecting the end effector provided on the gear box according to claim 1, characterized in that: A second sub-gear (17) is mounted on the bottom of the gearbox output shaft (2), a first deep groove ball bearing (18) is mounted on the bottom of the surface of the second sub-gear (17), and an O-ring (19) is mounted on the bottom of the first deep groove ball bearing (18).

8. The protection device for protecting the end effector provided on the gear box according to claim 2, characterized in that: Second deep groove ball bearings (20) connected to the inner wall of the box body (1) are installed on both sides of the surface of the left and right picking shafts (8), and a retaining ring (21) is installed on the outer side of the second deep groove ball bearing (20), and an oil seal (22) located on the inner side of the end cover (9) is installed on the outer side of the retaining ring (21).

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