A tractor transmission

Abstract

The utility model relates to tractor technical field discloses a tractor transmission, including tractor transmission main part and rear axle housing, the rear axle housing with the connecting end welding of transmission main part has flange connecting disc, the transmission main part two symmetrical lateral wall all constructs the convex ring, the flange connecting disc passes through bolt with the convex ring is connected, the outer ring of flange connecting disc is provided with a plurality of thread holes no.

Description

Technical Field

[0001] This utility model belongs to the field of tractor technology, specifically a tractor transmission. Background Technology

[0002] As an important piece of agricultural machinery, the transmission of a tractor is the core component for power transmission, undertaking key functions such as speed change and torque transmission. In existing technology, the rear axle housing of a tractor is usually connected to the transmission body via a flange, and bolts are used to secure the structure.

[0003] However, in actual use, due to long-term load and environmental factors, the rear axle housing and the transmission / gearbox body are prone to tight adhesion, and even corrosion may form at the mating surfaces, making disassembly extremely difficult. Currently, forced separation methods such as pry bars and hammers are commonly used, which not only easily cause deformation and damage to the flange, housing, or connecting parts, but also affect assembly accuracy and increase maintenance costs and time.

[0004] Therefore, existing tractor transmissions still suffer from problems such as inconvenient disassembly, easily damaged parts, and low maintenance efficiency in their structural design. There is an urgent need for a transmission connection scheme that is structurally reasonable, easy to disassemble, and has anti-damage functions. Utility Model Content

[0005] The purpose of this utility model is to provide a tractor transmission to solve the problems mentioned above.

[0006] The technical solution adopted by this utility model is as follows: a tractor transmission, including a tractor transmission body and a rear axle housing, wherein a flange connecting plate is welded to the connection end of the rear axle housing and the transmission body, and convex rings are constructed on the two symmetrical side walls of the transmission body, and the flange connecting plate is connected to the convex rings by bolts. The outer circumference of the flange connecting plate has several threaded holes, and a contact ring is fitted onto the outer side of the convex ring. The contact ring is fixedly installed on the housing of the main body of the transmission by bolts.

[0007] In a preferred embodiment, a plurality of threaded holes are provided around the circumference of the convex ring, and a plurality of through holes corresponding to the threaded holes are provided around the inner circumference of the flange connecting plate. The threaded holes are threaded with external hexagonal bolts, which pass through the through holes.

[0008] In a preferred embodiment, the external hexagonal bolt can be threaded into the threaded hole.

[0009] In a preferred embodiment, the convex ring is provided with a plurality of threaded holes 3 opened on the housing of the main body of the transmission, and the contact plate is provided with a plurality of stepped countersunk holes around its perimeter. The threaded holes 3 are threadedly connected to hexagon socket bolts, and the hexagon socket bolts pass through the stepped countersunk holes.

[0010] In a preferred embodiment, when the contact ring is installed on the main body of the transmission, the outer surface of the contact ring is not higher than the mounting surface of the convex ring.

[0011] In a preferred embodiment, when the rear axle housing and the transmission body are in a connected state, a protective plug is connected to the threaded hole with an internal thread.

[0012] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are: 1. In this utility model, when the rear axle housing and the main body of the transmission are tightly connected and adsorbed, a bolt can be inserted through a threaded hole. The bolt will contact the ring, and the force of the bolt will separate the two. The operating principle is that the bolt is screwed in to generate a reverse force, breaking the adsorption state. The technical effect is to facilitate the disassembly of the rear axle housing, avoid the use of violent tools, reduce component damage, and improve maintenance efficiency. Attached Figure Description

[0013] Figure 1 This is a simplified schematic diagram of the three-dimensional structure of this utility model; Figure 2 This is a simplified schematic diagram of the exploded three-dimensional structure of this utility model.

[0014] Markings in the diagram: 1-Transmission body; 2-Rear axle housing; 3-Flange connecting plate; 4-Raised ring; 5-Threaded hole one; 6-Contact ring; 7-Threaded hole two; 8-Through hole; 9-External hex bolt; 10-Threaded hole three; 11-Stepped countersunk hole; 12-Internal hex bolt; 13-Protective plug. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below in conjunction with the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0016] The following will combine Figures 1-2 A detailed description of a tractor transmission according to an embodiment of the present invention will be provided.

[0017] Example: This utility model provides a tractor transmission, see reference. Figures 1 to 2 As shown, the device includes a tractor transmission body 1 and a rear axle housing 2. A flange connecting plate 3 is welded to the connection end between the rear axle housing 2 and the transmission body 1. convex rings 4 are constructed on the two symmetrical side walls of the transmission body 1. The flange connecting plate 3 is connected to the convex rings 4 by bolts. In this structure, the rear axle housing 2 is connected to the transmission body 1 through the flange connecting plate 3, thereby realizing the connection between the rear axle and the transmission body 1.

[0018] refer to Figures 1 to 2 As shown, the outer ring of the flange connecting plate 3 has several threaded holes 5, and the outer side of the convex ring 4 is provided with a contact ring 6. The contact ring 6 is fixedly installed on the housing of the transmission body 1 by bolts. In this structure, the threaded holes 5 are located on the outer ring of the flange connecting plate 3 for installing bolts. When the rear axle housing 2 and the transmission body 1 are tightly connected and adsorbed, the bolt can be inserted through the threaded hole 5. The bolt pushes the contact ring 6, and the pushing force of the bolt will separate the two. The operating principle is that the bolt is screwed in to generate a reverse force to break the adsorption state. The technical effect is to facilitate the disassembly of the rear axle housing 2, avoid the use of violent tools, reduce component damage, and improve maintenance efficiency. The contact ring 6 is used to prevent the bolt from moving and damaging the housing of the transmission body 1. The contact ring 6 is fixed to the transmission body 1 with bolts, so that the contact ring 6 can be disassembled and replaced if it is severely damaged in the future.

[0019] refer to Figures 1 to 2 As shown, the convex ring 4 has several threaded holes 7 around its circumference, and the inner ring of the flange connecting plate 3 has several through holes 8 corresponding to the threaded holes 7. The threaded holes 7 are threaded with hexagonal bolts 9, which pass through the through holes 8. In this structure, the hexagonal bolts 9 pass through the through holes 8 and are screwed into the threaded holes 7 to tightly fix the flange connecting plate 3 to the convex ring 4. The operating principle is that the tightening force of the hexagonal bolts 9 makes the flange connecting plate 3 and the convex ring 4 tightly connected, ensuring a stable connection.

[0020] refer to Figures 1 to 2 As shown, the external hex bolt 9 can be threaded to the threaded hole 5. This structure realizes the versatility of the external hex bolt 8. The disassembled external hex bolt 9 can be used to pry open the adsorbed rear axle housing 2, so that there is no need to find a bolt separately to pry it open.

[0021] refer to Figure 1As shown, the convex ring 4 has several threaded holes 10 on the housing of the transmission body 1. The contact ring 6 has several stepped countersunk holes 11 around its perimeter. The threaded holes 10 are threaded with hexagon socket head cap screws 12, which pass through the stepped countersunk holes 11. In this structure, the hexagon socket head cap screws 12 pass through the stepped countersunk holes 11 and are screwed into the threaded holes 10 to firmly install the contact ring 6 on the transmission body 1. The operating principle is that the tightening of the hexagon socket head cap screws 12 makes the contact ring 6 and the housing of the transmission body 1 fit tightly together. The stepped countersunk holes 11 hide the bolt heads, avoiding interference and wear, and extending the service life of the components.

[0022] refer to Figures 1 to 2 As shown, when the contact ring 6 is installed on the main body 1 of the transmission, the outer surface of the contact ring 6 is not higher than the mounting surface of the convex ring 4. In this structure, after the contact ring 6 is installed, it remains flush with or slightly lower than the mounting surface of the convex ring 4, ensuring that the flange connecting plate 3 can fully contact the convex ring 4 during installation without any protrusions interfering.

[0023] refer to Figures 1 to 2 As shown, when the rear axle housing 2 and the transmission body 1 are connected, a protective plug 13 is threaded into the threaded hole 5. In this structure, when the threaded hole 5 is not in use, the protective plug 13 is screwed into the hole to seal it. The operating principle is to use the protective plug 13 to block the threaded hole 5 to prevent dust, moisture or impurities from entering. The technical effect is to protect the threaded hole from corrosion and damage, and to ensure that the threaded hole 5 is clean and usable when disassembling.

[0024] The implementation principle of a tractor transmission according to an embodiment of this application is as follows: When in use, the rear axle housing 2 is connected to the convex ring 4 of the transmission body 1 via the flange connecting plate 3 and the external hexagon bolts 9 to realize the overall assembly of the transmission. When it is necessary to disassemble the rear axle housing 2, if the rear axle housing 2 and the transmission body 1 are tightly attached due to long-term use, the external hexagonal bolt 9 can be inserted through the threaded hole 5, and the two can be gradually separated by the force of the bolt. The operating principle is to break the attachment state by the axial force generated by the threaded insertion. The technical effect is to avoid the deformation or damage of the parts caused by violent disassembly, and to improve the disassembly efficiency and safety. When threaded hole 5 is not in use, the protective plug 13 protects threaded hole 5 during daily use, ensuring that it is always available. Furthermore, the contact ring 6 is used to prevent the bolts from moving and damaging the housing of the transmission body 1. The contact ring 6 is fixed to the transmission body 1 with bolts, so that the contact ring 6 can be disassembled and replaced if it is severely damaged in the future.

[0025] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A tractor transmission, comprising a tractor transmission body (1) and a rear axle housing (2), characterized in that: The rear axle housing (2) is welded to the connection end of the transmission body (1) with a flange connecting plate (3). The two symmetrical side walls of the transmission body (1) are each equipped with a convex ring (4). The flange connecting plate (3) is connected to the convex ring (4) by bolts. The outer circumference of the flange connecting plate (3) is provided with several threaded holes (5), and a contact ring (6) is fitted on the outer side of the convex ring (4). The contact ring (6) is fixedly installed on the housing of the transmission body (1) by bolts.

2. A tractor transmission as described in claim 1, characterized in that: The convex ring (4) has several threaded holes (7) around its circumference. The inner ring of the flange connecting plate (3) has several through holes (8) corresponding to the threaded holes (7). The threaded holes (7) are threaded with external hexagonal bolts (9), which pass through the through holes (8).

3. A tractor transmission as described in claim 2, characterized in that: The external hexagonal bolt (9) can be threaded to the threaded hole (5).

4. A tractor transmission as described in claim 1, characterized in that: The convex ring (4) has several threaded holes (10) on the housing of the main body (1) of the transmission. The contact ring (6) has several stepped countersunk holes (11) around its perimeter. The threaded holes (10) are threaded with hexagonal bolts (12), which pass through the stepped countersunk holes (11).

5. A tractor transmission as described in claim 1, characterized in that: When the contact ring (6) is installed on the main body (1) of the transmission, the outer surface of the contact ring (6) is not higher than the mounting surface of the convex ring (4).

6. A tractor transmission as described in claim 1, characterized in that: When the rear axle housing (2) is connected to the transmission body (1), a protective plug (13) is connected to the internal thread of the threaded hole (5).

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