A high-precision gear for a power harrow gearbox for agricultural machinery

Abstract

The utility model discloses a high-precision gear for a power harrow gearbox of agricultural machinery, which belongs to the technical field of gearboxes, and includes a gearbox body and a gear arranged inside the gearbox body, the inner wall of the gear is slidably connected with an insertion rod, one end of the insertion rod is provided with a fixing cylinder, a connecting cylinder and a liquid storage cylinder, and the inner wall of the liquid storage cylinder is slidably connected with an extrusion plate. The high-precision gear for a power harrow gearbox of agricultural machinery described in the utility model squeezes the lubricating liquid inside the liquid storage cylinder through the extrusion plate, and the lubricating liquid enters the inside of the insertion rod, thereby being squeezed out at the liquid outlet, so that the lubricating liquid moves to the position where the gear contacts other gears, avoiding the outer surface of the gear being too dry when it is first used, achieving the effect of reducing friction loss, thereby solving the problem that the gear cannot be filled with lubricating oil at the first time of starting, which leads to greater wear of the gear at the beginning and affects the service life.

Description

Technical Field

[0001] The utility model relates to the technical field of gearboxes, in particular to a high-precision gear for a gearbox of an agricultural power harrow. Background Art

[0002] Agricultural power harrow is a kind of agricultural machinery that uses the power output shaft of the tractor as the power source to drive the working parts to perform dry field soil crushing and land preparation operations. The gearbox is a key mechanical component in the agricultural power harrow. It is responsible for transmitting the power of the tractor to the harrowing tool to achieve the loosening and sorting of the land. The gearbox can achieve the effect of speed change through the engagement of large and small gears. It has the advantages of improving transmission efficiency, reducing noise and impact resistance. It has been widely used in the field of agricultural machinery.

[0003] Existing gearboxes are generally composed of an outer shell and multiple gears of different sizes inside, which are respectively connected to a high-speed shaft and a low-speed shaft that pass through the outer shell. The high-speed rotation speed can be converted into a low-speed shaft with greater torque through the meshing between the gears, or the low-speed shaft can be converted into a high-speed rotation speed with a higher rotation speed. During use, a large amount of heat will be generated due to the need for meshing transmission between the gears. The existing method is generally to add lubricating oil to the gear box to reduce friction, thereby reducing heat.

[0004] However, when the gear box is just started, since the lubricating oil in the gear box has been standing for a period of time, the lubricating oil settles to the bottom of the gear box, causing the upper part of the gear to be drier. The gear needs to be rotated several times before the lubricating oil can cover the outer surface of the gear, and it cannot be covered with lubricating oil immediately after starting, resulting in greater wear of the gear at just starting, affecting the service life. In order to solve this technical problem, the utility model proposes a high-precision gear for a power harrow gearbox of an agricultural machinery. Utility Model Content

[0005] The main purpose of the utility model is to provide a high-precision gear for a gearbox of an agricultural power harrow, which can effectively solve the problems mentioned in the background technology.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] A high-precision gear for a power harrow gearbox of an agricultural machinery comprises a gearbox body and a gear arranged inside the gearbox body, the inner wall of the gear is slidably connected with an insertion rod, one end of the insertion rod is provided with a fixing cylinder, a connecting cylinder and a liquid storage cylinder, the inner wall of the liquid storage cylinder is slidably connected with an extrusion plate, one side of the liquid storage cylinder is connected to a connecting rod, the outer surface of the liquid storage cylinder is provided with an adjustment mechanism, the outer surface of the insertion rod is provided with a liquid outlet groove, the interior of the gear is provided with a circulation groove, the interior of the gear is also provided with an annular groove, and the inner wall of the gear is provided with a liquid outlet hole connecting the annular groove and the outside.

[0008] Preferably, a fixing mechanism is provided at one end of the insertion rod, and the fixing mechanism comprises a fixing plate, an inner wall of the fixing plate is slidably connected to the insertion rod, and a side surface of the fixing plate is in contact with the gear.

[0009] Preferably, a bolt is provided on one side of the fixing plate, and the inner wall of the bolt is threadedly connected to the insertion rod.

[0010] Preferably, one end of the insertion rod is fixedly connected to the fixed cylinder, one side of the fixed cylinder is fixedly connected to the connecting cylinder, the outer surface of the connecting cylinder is rotatably connected to the gearbox body, and one end of the connecting cylinder away from the fixed cylinder is fixedly connected to the liquid storage cylinder.

[0011] Preferably, the adjustment mechanism comprises a sliding rod, one end of which is fixedly connected to the extrusion plate, the outer surface of which is slidably connected to the liquid storage cylinder, and the other end of which is fixedly connected to the push plate.

[0012] Preferably, the outer surface of the liquid storage cylinder is fixedly connected to a fixing plate, the outer surface of the fixing plate is rotatably connected to a round rod, and the outer surface of the round rod is slidably connected to the push plate.

[0013] Preferably, a clamping block is fixedly connected to the outer surface of the round rod, and the outer surface of the clamping block is in contact with the push plate.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] In the utility model, by arranging components such as an insertion rod and a liquid storage cylinder, an adjusting mechanism is used to push the extrusion plate one grid, and the extrusion plate squeezes the lubricating liquid inside the liquid storage cylinder. The lubricating liquid enters the interior of the insertion rod through the connecting cylinder and the fixing cylinder, and then enters the interior of the annular groove through the circulation groove, thereby being squeezed out at the liquid outlet, so that the lubricating liquid moves to the position where the gear contacts other gears, and then is used, thereby avoiding the outer surface of the gear from being too dry when it is first used, achieving the effect of reducing friction loss, thereby solving the problem that the gear cannot be fully covered with lubricating oil at the first time of starting, thereby causing greater wear of the gear at the time of starting and affecting the service life.

[0016] In the utility model, by arranging components such as gears and adjustment mechanisms, multiple insertion rods penetrate the gears, and the two sides of the gears are supported by the fixing tube and the fixing plate, so that the gears and the insertion rods are fixed together. Compared with the existing method of fixing by a rod, the stability is better and it is not easy to slip during rotation, thereby achieving the effect of increasing the stability of the gears. When the lubricating liquid inside the liquid storage cylinder is less, the feed port on the liquid storage cylinder is opened, and the extrusion plate is pushed to one side, so as to add the lubricating liquid inside the liquid storage cylinder, thereby achieving the effect of adding the lubricating liquid. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of a high-precision gear for a power harrow gearbox for agricultural machinery according to the utility model;

[0018] Figure 2 This is a three-dimensional structural diagram of a high-precision gear for a power harrow gearbox for agricultural machinery according to the utility model;

[0019] Figure 3 It is an exploded schematic diagram of a gear in a high-precision gear used in a gearbox of a power harrow for agricultural machinery according to the utility model;

[0020] Figure 4 This is a cross-sectional view of a gear in a high-precision gear used in a gearbox of an agricultural power harrow of the utility model;

[0021] Figure 5 The utility model is a cross-sectional view of a liquid storage cylinder in a high-precision gear used in a gearbox of an agricultural power harrow.

[0022] In the figure: 1. gearbox body; 2. gear; 3. plug rod; 4. fixing mechanism; 401. fixing plate; 402. bolt; 5. connecting cylinder; 6. liquid storage cylinder; 7. extrusion plate; 8. connecting rod; 9. adjustment mechanism; 901. sliding rod; 902. push plate; 903. fixing plate; 904. round rod; 905. block; 10. liquid outlet groove; 11. circulation groove; 12. annular groove; 13. liquid outlet hole; 14. fixing cylinder. DETAILED DESCRIPTION

[0023] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0024] like Figure 1-5 As shown, a high-precision gear for a power harrow gearbox of an agricultural machinery comprises a gearbox body 1 and a gear 2 arranged inside the gearbox body 1, an inner wall of the gear 2 is slidably connected with an insertion rod 3, and there are six insertion rods 3. The end of the insertion rod 3 is provided with a thread, and one end of the insertion rod 3 is provided with a fixing mechanism 4, and the fixing mechanism 4 comprises a fixing plate 401, the inner wall of the fixing plate 401 is slidably connected with the insertion rod 3, and one side of the fixing plate 401 is in contact with the gear 2, and a bolt 402 is provided on one side of the fixing plate 401, and the inner wall of the bolt 402 is threadedly connected with the insertion rod 3. By fixing the bolt 402 to the insertion rod 3, the fixing plate 401 is tightly fitted to the gear 2, and then the gear 2 is fixed with six insertion rods 3. Compared with the existing method of fixing by one rod, the stability is better, it is not easy to slip during rotation, and the effect of increasing the stability of the gear 2 is achieved.

[0025] One end of the insertion rod 3 is provided with a fixed cylinder 14, a connecting cylinder 5 and a liquid storage cylinder 6. One end of the insertion rod 3 is fixedly connected to the fixed cylinder 14, one side of the fixed cylinder 14 is fixedly connected to the connecting cylinder 5, the outer surface of the connecting cylinder 5 is rotatably connected to the gearbox body 1, and one end of the connecting cylinder 5 away from the fixed cylinder 14 is fixedly connected to the liquid storage cylinder 6. The interior of the insertion rod 3, the fixed cylinder 14 and the connecting cylinder 5 are all hollow, so that the lubricating fluid can flow inside.

[0026] The inner wall of the liquid storage cylinder 6 is slidably connected with an extrusion plate 7, a sealing ring is arranged between the extrusion plate 7 and the inner wall of the liquid storage cylinder 6, a connecting rod 8 is connected to one side of the liquid storage cylinder 6, the other end of the connecting rod 8 is connected to the power end of the agricultural machine, and an adjustment mechanism 9 is arranged on the outer surface of the liquid storage cylinder 6, the adjustment mechanism 9 includes a sliding rod 901, one end of the sliding rod 901 is fixedly connected to the extrusion plate 7, the outer surface of the sliding rod 901 is slidably connected to the liquid storage cylinder 6, and the other end of the sliding rod 901 is fixedly connected to the push plate 902. The outer surface is fixedly connected to a fixed plate 903, the outer surface of the fixed plate 903 is rotatably connected to a round rod 904, the outer surface of the round rod 904 is slidably connected to the push plate 902, the outer surface of the round rod 904 is fixedly connected to a clamping block 905, there are multiple clamping blocks 905, the spacing between two adjacent clamping blocks 905 is the same as the thickness of the push plate 902, the clamping block 905 is a rectangular block with different lengths and widths, a corresponding rectangular opening is opened on the push plate 902, and the outer surface of the clamping block 905 is in contact with the push plate 902.

[0027] A liquid outlet groove 10 is provided on the outer surface of the insertion rod 3, and a circulation groove 11 is provided inside the gear 2. The liquid outlet groove 10 is opened in the direction of the circulation groove 11. The number of the circulation grooves 11 is the same as the number of the insertion rods 3, and each circulation groove 11 corresponds to each liquid outlet groove 10 one by one. An annular groove 12 is also provided inside the gear 2, and the annular groove 12 connects multiple circulation grooves 11. The lubricating liquid flowing out of all the circulation grooves 11 can be retained in the annular groove 12. The inner wall of the gear 2 is provided with a liquid outlet hole 13 connecting the annular groove 12 and the outside. The number of the liquid outlet holes 13 is multiple, which is an integer multiple of the number of teeth on the gear 2.

[0028] 905, and the lubricating oil is squeezed out from the gear 2 and the gear 2 is moved to the position where the gear 2 contacts with the other gear 2, thereby preventing the gear 2 from being too dry when the gear 2 is first used.

[0029] The gear 2 is penetrated by multiple insertion rods 3, and the two sides of the gear 2 are supported by the fixing tube 14 and the fixing plate 401, so that the gear 2 and the insertion rod 3 are fixed together. Compared with the existing method of fixing by a rod, the stability is better and it is not easy to slip during rotation, thereby achieving the effect of increasing the stability of the gear 2. When the lubricating liquid inside the liquid storage cylinder 6 is less, the feed port on the liquid storage cylinder 6 is opened, and the extrusion plate 7 is pushed to one side to add the lubricating liquid inside the liquid storage cylinder 6, thereby achieving the effect of adding lubricating liquid. The movement amplitude of the push plate 902 is divided into multiple grids by multiple blocks 905, and one grid is moved each time it is used. The amount of lubricating liquid injected into the gear 2 each time is the same to prevent excessive or insufficient use.

[0030] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A high-precision gear for a power harrow gearbox of an agricultural machine, comprising a gearbox body (1) and a gear (2) arranged inside the gearbox body (1), characterized in that: The inner wall of the gear (2) is slidably connected to an insertion rod (3), one end of the insertion rod (3) is provided with a fixing tube (14), a connecting tube (5) and a liquid storage tube (6), the inner wall of the liquid storage tube (6) is slidably connected to an extrusion plate (7), one side of the liquid storage tube (6) is connected to a connecting rod (8), the outer surface of the liquid storage tube (6) is provided with an adjustment mechanism (9), the outer surface of the insertion rod (3) is provided with a liquid outlet groove (10), the interior of the gear (2) is provided with a circulation groove (11), the interior of the gear (2) is also provided with an annular groove (12), and the inner wall of the gear (2) is provided with a liquid outlet hole (13) connecting the annular groove (12) and the outside.

2. The high-precision gear for the agricultural power harrow gearbox according to claim 1, characterized in that: A fixing mechanism (4) is provided at one end of the insertion rod (3), and the fixing mechanism (4) comprises a fixing plate (401), the inner wall of the fixing plate (401) is slidably connected to the insertion rod (3), and one side surface of the fixing plate (401) is in contact with the gear (2).

3. The high-precision gear for the agricultural power harrow gearbox according to claim 2, characterized in that: A bolt (402) is provided on one side of the fixing plate (401), and the inner wall of the bolt (402) is threadedly connected to the insertion rod (3).

4. The high-precision gear for the agricultural power harrow gearbox according to claim 1, characterized in that: One end of the insertion rod (3) is fixedly connected to the fixed cylinder (14), one side of the fixed cylinder (14) is fixedly connected to the connecting cylinder (5), the outer surface of the connecting cylinder (5) is rotatably connected to the gearbox body (1), and one end of the connecting cylinder (5) away from the fixed cylinder (14) is fixedly connected to the liquid storage cylinder (6).

5. The high-precision gear for the agricultural power harrow gearbox according to claim 4, characterized in that: The adjusting mechanism (9) comprises a sliding rod (901), one end of which is fixedly connected to the extrusion plate (7), the outer surface of which is slidably connected to the liquid storage cylinder (6), and the other end of which is fixedly connected to the push plate (902).

6. The high-precision gear for the agricultural power harrow gearbox according to claim 5, characterized in that: The outer surface of the liquid storage cylinder (6) is fixedly connected to a fixing plate (903), the outer surface of the fixing plate (903) is rotatably connected to a round rod (904), and the outer surface of the round rod (904) is slidably connected to the push plate (902).

7. The high-precision gear for the agricultural power harrow gearbox according to claim 6, characterized in that: A clamping block (905) is fixedly connected to the outer surface of the round rod (904), and the outer surface of the clamping block (905) is in contact with the push plate (902).

Images