Corner speed changer of double-shaft rotary cultivator

Abstract

The utility model discloses a corner variable-speed motor of a double-shaft rotary cultivator, and relates to the technical field of double-shaft rotary cultivators, the corner variable-speed motor specifically comprises a shell and a corner variable-speed structure arranged in the shell, the shell comprises a main body part and a protruding part protruding outwards which are integrally formed, supporting legs are arranged at the top and the bottom of the main body part, and the supporting legs are arranged on the main body part. Connecting joints are arranged at the top and the bottom of the protruding part, the outer surfaces of the supporting legs and the outer surfaces of the connecting joints are wrapped with cooling fins, and reinforcing ribs are arranged on the outer surface of the shell. The corner variable-speed motor and the shell of the double-shaft rotary cultivator are of an integrated structure, structures such as involution screws, sealing lantern rings and positioning pins are omitted, the structure is simpler, the production cost is reduced, the risk of oil leakage and oil immersion at the involution position in the prior art is completely eradicated, and the machining precision is guaranteed. Through the arrangement of the cooling fins, the heat dissipation performance of the corner variable-speed motor is improved, the cooling speed of corner variable-speed engine oil can be further increased, and work of the corner variable-speed motor is facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to a double shaft rotary cultivator technical field, concretely is a corner speed changer of double shaft rotary cultivator. BACKGROUND

[0002] Rotary cultivator is the tillage machinery that completes ploughing, harrowing operation with tractor, can cut the rootstock buried below the ground surface, facilitate seeding machine operation, provide good seedbed for later seeding.

[0003] At present, the temperature in the corner speed changer rises when working, generally through the cooling system in the double shaft rotary cultivator to cool the corner speed changer oil, and only through the cooling system to cool, the cooling speed is slow, easily influences the service life of parts, and in the prior art, a corner speed changer shell adopts split type structure of counter installation, the corner speed changer shell of this structure needs to use screw, sealing sleeve ring, positioning pin and other structures when assembling, which increases the production cost and reduces the production efficiency of the corner speed changer, and due to the influence of machining precision, there is the risk of oil leakage and oil immersion at the counter, and the shell strength of split type structure is low, based on this, the application provides a corner speed changer of double shaft rotary cultivator. UTILITY MODEL CONTENTS

[0004] The utility model provides a corner speed changer of double shaft rotary cultivator, solve the split type shell of high production cost, unable to guarantee machining precision, low in strength, further lead to the production efficiency of corner speed changer is low, the risk of oil leakage and oil immersion at the counter caused by the machining mode in the background art, and the temperature in the corner speed changer rises when working, only through the cooling system in the double shaft rotary cultivator to cool the corner speed changer oil, the cooling speed is slow, easily influences the service life of parts.

[0005] The utility model provides following technical scheme: a corner speed changer of double shaft rotary cultivator, including the casing and the corner speed change structure of setting in the casing, the casing includes the main part of integrally forming and the outward bulge of the bulge, the top and bottom of main part are equipped with support foot, the top and bottom of bulge are equipped with connecting joint, the outer surface of support foot and the outer surface of connecting joint are all wrapped with fin, the outer surface of casing is equipped with the reinforcing rib, is equipped with the open end on the casing, the corner speed change structure is assembled to the casing through open end, and the outside of open end is equipped with the end cover that blocks open end;

[0006] The convex part comprises an outer connecting part integrally formed with the main body part and an inner supporting tube located in the inner cavity of the outer connecting part, one end of the inner supporting tube is integrally formed with the outer connecting part, the other end of the inner supporting tube is connected with the outer connecting part through a reinforcing rib plate, the inner supporting tube is provided with a through hole, the through hole is staggered with the reinforcing rib plate, and the connecting joint is located between two adjacent reinforcing rib plates.

[0007] Preferably, the middle part of the supporting leg is provided with a fixed threaded hole, the end of the supporting leg away from the main body part is horizontal, and the two sides of the top of the main body part and the two sides of the bottom thereof are symmetrically provided with supporting legs.

[0008] Preferably, the outer connecting part is a conical structure protruding outward, the inner diameter of the end of the outer connecting part away from the main body part is smaller than that of the other end thereof, the outer surface of the outer connecting part is uniformly distributed with reinforcing ribs, and the reinforcing ribs are conically distributed.

[0009] Preferably, the cross section of the open end is circular, and the outer side of the open end is uniformly provided with an assembly threaded hole.

[0010] Preferably, the open end comprises a front opening, a rear opening and a side opening, the middle part of the end of the convex part away from the main body part is provided with the front opening, the inner diameter of the front opening is the same as that of the inner supporting tube, the middle part of the end of the main body part away from the convex part is provided with the rear opening, the central axes of the front opening and the rear opening are on the same straight line, the middle parts of the two sides of the main body part are provided with the side openings, and the straight lines where the central axes of the side openings are located are perpendicular to the straight line where the central axis of the front opening is located.

[0011] Preferably, the connecting part between the reinforcing rib plate and the inner wall of the outer connecting part is provided with a rounded corner, and the end part of the reinforcing rib is provided with a rounded corner.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] 1. The corner speed changer of the double-shaft rotary cultivator has an integrated structure, and the structure is simpler, the production cost is reduced, the risk of oil leakage and oil invasion at the joint in the prior art is eliminated, and the machining precision is ensured.

[0014] 2. The corner speed changer of the double-shaft rotary cultivator has the following advantages: the setting of the heat dissipation fins increases the heat dissipation performance of the corner speed changer, thereby the cooling speed of the oil of the corner speed changer can be improved; the setting of the reinforcing ribs and the reinforcing rib plates increases the compression resistance of the shell, and the design of the rounded corners of the end part of the reinforcing ribs and the connecting part between the reinforcing rib plates and the outer connecting part avoids stress concentration, further increases the structural strength of the shell, reduces the deformation probability of the shell, and improves the reliability of the corner speed changer in use. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the front view schematic diagram of the utility model structure;

[0016] Figure 2 It is the front view schematic diagram of the utility model structure;

[0017] Figure 3 It is the front view schematic diagram of the utility model structure; Figure 1 Back view schematic diagram;

[0018] Figure 4 It is the front view schematic diagram of the utility model structure; Figure 1 Sectional view schematic diagram;

[0019] Figure 5 It is the shell schematic diagram of the utility model structure;

[0020] Figure 6 It is the back view schematic diagram of the shell of the utility model structure;

[0021] Figure 7 It is the bottom view schematic diagram of the shell of the utility model structure;

[0022] Figure 8 It is the sectional view schematic diagram of the shell of the utility model structure.

[0023] In the drawing: 1, shell;2, reinforcing rib;3, fin;4, side opening;5, assembly threaded hole;6, front opening;7, rear opening;8, fixed threaded hole;9, inner support pipe;10, outer connecting part;11, through hole;12, reinforcing rib plate;13, connecting joint. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be described clearly and completely below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0025] The utility model provides a kind of corner speed changer of double-shaft rotary cultivator, including shell 1 and the corner speed changer structure being set in shell 1, shell 1 is integrally formed structure, compared to split type shell structure in prior art, shell 1 omits to structure such as joint screw, sealing sleeve ring, positioning pin, structure is simpler, reduce production cost, eliminate the risk of oil leakage in prior art in joint, and guarantee processing precision, and deformation is small.

[0026] The shell 1 comprises a one-piece main body and a outwardly protruding protruding part, the top and bottom of the main body are provided with support feet, the middle part of the support feet is provided with a fixed threaded hole 8, the end of the support feet away from the main body is horizontal, the two sides of the top of the main body and the two sides of the bottom thereof are symmetrically provided with support feet, and the setting of the support feet facilitates the connection of the corner speed changer with the double-shaft rotary cultivator.

[0027] The top and bottom of the protruding part are provided with connecting joints 13, the outer surfaces of the support feet and the connecting joints 13 are wrapped with heat dissipation fins 3, and the setting of the heat dissipation fins 3 improves the heat dissipation speed of the corner speed changer during use, thereby improving the oil cooling speed of the corner speed changer.

[0028] The outer surface of the shell 1 is provided with reinforcing ribs 2, and the setting of the reinforcing ribs 2 improves the anti-deformation ability of the shell 1 and prolongs the service life of the shell 1.

[0029] The shell 1 is provided with an open end, the corner speed changing structure is assembled into the shell 1 through the open end, and the outside of the open end is provided with an end cover for plugging the open end. The corner speed changing structure is a prior art and will not be described here.

[0030] The cross section of the open end is circular, and the outer side of the open end is uniformly provided with an assembly threaded hole 5. The end cover can be fixed outside the open end by using a bolt matched with the assembly threaded hole 5.

[0031] The open end comprises a front opening 6, a rear opening 7 and a side opening 4, the middle part of the end of the protruding part away from the main body is provided with the front opening 6, the middle part of the end of the main body away from the protruding part is provided with the rear opening 7, the center axes of the front opening 6 and the rear opening 7 are on the same straight line, the middle parts of the two sides of the main body are provided with the side openings 4, and the straight line where the center axes of the side openings 4 are located is perpendicular to the straight line where the center axes of the front opening 6 are located, so that the installation precision can be improved.

[0032] The protruding part comprises an outer connecting part 10 integrally formed with the main body and an inner support pipe 9 located in the inner cavity of the outer connecting part 10. The outer connecting part 10 is a outwardly protruding conical structure, the inner diameter of the end of the outer connecting part 10 away from the main body is smaller than the inner diameter of the other end thereof, the outer surface of the outer connecting part 10 is uniformly distributed with reinforcing ribs 2, and the reinforcing ribs 2 are conically distributed. The setting of the reinforcing ribs 2 can improve the strength of the protruding part.

[0033] The inner diameter of the front opening 6 is the same as that of the inner support pipe 9, one end of the inner support pipe 9 is integrally formed with the outer connecting part 10, the other end of the inner support pipe 9 is connected with the outer connecting part 10 through a reinforcing rib plate 12, the inner support pipe 9 is provided with a through hole 11, the through hole 11 and the reinforcing rib plate 12 are staggered, and the connecting joint 13 is located between the two adjacent reinforcing rib plates 12. The setting of the through hole 11 facilitates the filling of the corner speed changer oil into the shell 1.

[0034] The connecting part of the reinforcing rib plate 12 and the inner wall of the outer connecting part 10 is provided with a rounded corner, which can weaken the stress of the shell 1 at this place, thereby increasing the structural strength of the shell.

[0035] In summary, the present application is to improve the shell of the corner speed changer, the shell 1 is an integral structure, compared with the split shell structure in the prior art, the shell 1 omits the structure of the butt screw, the sealing sleeve ring, the positioning pin and the like, the structure is simpler, the production cost is reduced, the risk of oil leakage and oil invasion at the butt joint in the prior art is eliminated, and the machining precision is ensured, the deformation amount is small. And the shell is provided with the fin 3, the reinforcing rib 2 and the reinforcing rib plate 12 outside, the heat dissipation performance and the compression resistance of the corner speed changer are improved, the use of the corner speed changer is facilitated, and through the design of the rounded corners of the reinforcing rib end and the connecting part of the reinforcing rib plate and the outer connecting part, the stress concentration is reduced, and the structural strength of the shell 1 is further improved.

[0036] The standard parts used in the utility model can be purchased from the market, the special-shaped parts can be ordered according to the description and the drawings, the specific connection mode of each part adopts the conventional means such as bolts, rivets and welding in the prior art, the machinery, parts and equipment adopt the conventional type in the prior art, which will not be described in detail here, the contents not described in detail in the specification belong to the prior art known to the person skilled in the art, although the embodiments of the utility model have been shown and described, it can be understood by the person skilled in the art that the embodiments can be changed, modified, replaced and modified in various ways without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A rotary speed changer for a dual-shaft rotary tiller, comprising a housing (1) and a rotary speed change structure disposed within the housing (1), characterized in that: The housing (1) comprises an integrally formed main body and a protruding portion protruding outward, the top and bottom of the main body are provided with support feet, the top and bottom of the protruding portion are provided with connecting joints (13), the outer surfaces of the support feet and the outer surfaces of the connecting joint (13) are wrapped with heat sinks (3), the outer surface of the housing (1) is provided with reinforcing ribs (2), the housing (1) is provided with an open end, the corner speed change structure is assembled into the housing (1) through the open end, and an end cover for sealing the open end is provided outside the open end; The protruding portion comprises an external connecting portion (10) integrally formed with the main body portion and an internal supporting tube (9) located in the inner cavity of the external connecting portion (10); one end of the internal supporting tube (9) is integrally formed with the external connecting portion (10); the other end of the internal supporting tube (9) is connected to the external connecting portion (10) via a reinforcing rib plate (12); a through hole (11) is provided on the internal supporting tube (9); the through hole (11) and the reinforcing rib plate (12) are staggered; and the connecting joint (13) is located between two adjacent reinforcing rib plates (12).

2. The angle speed changer of a dual-shaft rotary tiller according to claim 1, characterized in that: A fixing threaded hole (8) is provided in the middle of the support foot, one end of the support foot away from the main body is horizontal, and support feet are symmetrically provided on both sides of the top of the main body and both sides of the bottom thereof.

3. The angle speed changer of a dual-shaft rotary tiller according to claim 1, characterized in that: The external connection portion (10) is an outwardly protruding conical structure, the inner diameter of one end of the external connection portion (10) away from the main body portion is smaller than the inner diameter of the other end thereof, and reinforcing ribs (2) are evenly distributed on the outer surface of the external connection portion (10), and the reinforcing ribs (2) are distributed in a conical shape.

4. The angle speed changer of a dual-shaft rotary tiller according to claim 1, characterized in that: The cross section of the opening end is circular, and assembly threaded holes (5) are evenly arranged on the outer side of the opening end.

5. The angle speed changer of a dual-shaft rotary tiller according to claim 4, characterized in that: The open end comprises a front opening (6), a rear opening (7) and a side opening (4); the middle of the protruding portion away from one end of the main body is provided with a front opening (6); the inner diameter of the front opening (6) is the same as the inner diameter of the inner support tube (9); the middle of the main body away from one end of the protruding portion is provided with a rear opening (7); the central axes of the front opening (6) and the rear opening (7) are on the same straight line; the middle of both sides of the main body is provided with a side opening (4), and the straight line where the central axis of the side opening (4) is located is perpendicular to the straight line where the central axis of the front opening (6) is located.

6. The angle speed changer of a dual-shaft rotary tiller according to claim 1, characterized in that: The connection portion between the reinforcing rib plate (12) and the inner wall of the outer connecting portion (10) is provided with a rounded corner, and the end portion of the reinforcing rib (2) is provided with a rounded corner.

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