Engine rotating speed sensing assembly convenient to overhaul

Abstract

The utility model discloses an engine rotating speed sensing assembly convenient to overhaul. The engine rotating speed sensing assembly comprises a shell, a supporting component, a crank connecting rod module, a rotary transformer signal sensor, a first bearing and a second bearing. The resolver signal inductor comprises a resolver signal induction transmission shaft and a resolver signal induction integrator; the resolver signal induction transmission shaft is connected with the crank connecting rod module, and the resolver signal induction transmission shaft and the crank connecting rod module rotate synchronously; an outer ring of the first bearing is fixed in the shell, and one end, connected with the rotary transformer signal induction transmission shaft, of the crank connecting rod module is fixedly inserted in an inner ring of the first bearing in a penetrating manner; a rotary transformer signal sensor rotor is arranged on the rotary transformer signal sensing transmission shaft; and the rotary transformer signal induction integrator is fixed on the supporting component and corresponds to a rotor of the rotary transformer signal inductor. According to the utility model, the rotary transformer signal sensor can be conveniently detected, maintained and replaced, the time can be saved, and the efficiency can be improved.

Description

Technical Field

[0001] The utility model relates to the field of engines, and particularly relates to an engine speed induction component convenient for maintenance. Background Art

[0002] With the continuous development of technology, in order to achieve intelligent detection and control, engines are often equipped with resolver signal sensors. The resolver signal sensor includes a resolver signal induction transmission shaft and a resolver signal integration device. The crank connecting rod module of the engine is installed in a housing. The resolver signal induction transmission shaft is connected to the crank connecting rod module and installed in the housing. A resolver signal sensor rotor is provided on the resolver signal induction transmission shaft. The resolver signal integration device is fixed in the housing and corresponds to the resolver signal sensor rotor. However, when the resolver signal sensor fails, it is often inconvenient to detect, seriously affecting the detection efficiency of the resolver signal sensor. Moreover, it is also inconvenient to disassemble the resolver signal induction transmission shaft, thus being disadvantageous for the rapid replacement of the resolver signal induction transmission shaft. Content of the Utility Model

[0003] In order to overcome the deficiencies of the prior art, the purpose of the utility model is to provide an engine speed induction component convenient for maintenance, which can facilitate the detection of the resolver signal sensor, help improve the efficiency, and facilitate the disassembly of the resolver signal induction transmission shaft.

[0004] The purpose of the utility model is achieved by adopting the following technical solutions:

[0005] An engine speed induction component convenient for maintenance includes a housing, a support member, a crank connecting rod module, a resolver signal sensor, a first bearing, and a second bearing; the resolver signal sensor includes a resolver signal induction transmission shaft and a resolver signal integration device; the resolver signal induction transmission shaft is connected to the crank connecting rod module, and the resolver signal induction transmission shaft rotates synchronously with the crank connecting rod module; the outer ring of the first bearing is fixed in the housing, and one end of the crank connecting rod module connected to the resolver signal induction transmission shaft is fixedly inserted into the inner ring of the first bearing; the support member is detachably connected to the housing, and the support member is provided with an installation cavity; the outer ring of the second bearing is fixed in the installation cavity; the resolver signal induction transmission shaft is fixedly inserted into the inner ring of the second bearing; a resolver signal sensor rotor is provided on the resolver signal induction transmission shaft; the resolver signal integration device is fixed on the support member and corresponds to the resolver signal sensor rotor.

[0006] The housing is provided with an embedding groove. The support member includes a mounting seat. One end of the mounting seat forms an embedding end. The embedding end of the mounting seat is embedded in the embedding groove, and the installation cavity is formed on the embedding end of the mounting seat.

[0007] The mounting base is provided with an outwardly protruding outer convex wall, and the outer convex wall is connected to the housing in a detachable manner.

[0008] The resolver signal induction integrator has a convex ring; the support member includes a limit piece, and the limit piece is connected to the mounting base in a detachable manner. The mounting base is provided with a mating surface, and the convex ring of the resolver signal induction integrator is clamped between the mating surface of the mounting base and the limit piece.

[0009] The resolver signal induction transmission shaft is inserted and fitted with the crank connecting rod module; the crank connecting rod module is provided with an insertion hole, and the resolver signal induction transmission shaft is provided with an insertion end. The insertion end of the resolver signal induction transmission shaft is inserted into the insertion hole.

[0010] The cross section of the insertion hole is rectangular, and the shape of the insertion end matches the shape of the insertion hole.

[0011] A fixed cavity is formed in the housing, and the outer ring of the first bearing is fixed in the fixed cavity of the housing.

[0012] The resolver signal induction transmission shaft is provided with a bearing positioning shoulder between the first bearing and the second bearing, and the bearing positioning shoulder abuts against the inner ring of the second bearing.

[0013] The resolver signal induction transmission shaft is provided with a rotor positioning shoulder, and a locking member is connected to the resolver signal induction transmission shaft in a detachable manner. The resolver signal sensor rotor is sleeved on the resolver signal induction transmission shaft and is restricted between the rotor positioning shoulder and the locking member.

[0014] An oil seal is arranged in the support member between the resolver signal sensor rotor and the second bearing. The oil seal is provided with a through hole, and the resolver signal induction transmission shaft passes through the through hole.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0016] The utility model provides an engine speed induction component convenient for maintenance. By combining a housing, a support member, a crank connecting rod module, a resolver signal inductor, a first bearing and a second bearing, connecting the resolver signal induction transmission shaft to the crank connecting rod module, connecting the support member to the housing in a detachable manner, fixing the outer ring of the second bearing in the installation cavity, fixing and inserting the resolver signal induction transmission shaft in the inner ring of the second bearing, and fixing the resolver signal induction integrator on the support member, when the resolver signal inductor fails, the resolver signal induction transmission shaft and the resolver signal induction integrator can be disassembled together with the support member, so that the resolver signal inductor can be detected without separately disassembling the resolver signal induction transmission shaft and the resolver signal induction integrator from the inside of the housing. Thus, it is convenient to detect the resolver signal inductor, saving time and improving efficiency, and facilitating the maintenance of the resolver signal inductor; moreover, it is also convenient to disassemble the resolver signal induction transmission shaft, which is beneficial to the quick replacement of the resolver signal induction transmission shaft; in addition, by reasonably setting the connection relationship between the resolver signal induction integrator and the support member, it is also convenient to disassemble the resolver signal induction integrator. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of the engine speed induction component convenient for maintenance of the utility model;

[0018] Figure 2 is a three-dimensional sectional view of the engine speed induction component convenient for maintenance of the utility model cut along the resolver signal induction transmission shaft;

[0019] Figure 3 is a partial sectional view of the engine speed induction component convenient for maintenance of the utility model cut along the lubricating oil passage;

[0020] Figure 4 is an exploded view of the utility model.

[0021] Wherein, 10, housing; 11, lubricating oil passage; 12, first lubricating oil injection hole; 13, second lubricating oil injection hole; 14, fixed cavity; 15, installation cavity; 16, embedding groove; 20, crank connecting rod module; 21, insertion hole; 22, embedding end; 30, first bearing; 31, insertion end head; 40, second bearing; 50, support member; 51, mounting seat; 52, limiting piece; 54, outer convex wall; 70, resolver signal induction transmission shaft; 71, rotor positioning shoulder; 72, bearing positioning shoulder; 80, resolver signal inductor; 81, resolver signal inductor rotor; 82, resolver signal induction integrator; 83, convex ring; 84, oil seal; 85, main sleeve body; 86, collar; 90, locking part; 91, gasket; 92, locking nut; 93, gasket. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] Next, in combination with the accompanying drawings and specific embodiments, the present utility model will be further described. It should be noted that, on the premise of no conflict, any combination can be formed among the following-described embodiments or technical features to form a new embodiment.

[0023] As Figures 1-4 shown, an engine speed induction component convenient for maintenance includes a housing 10, a support member 50, a crank connecting rod module 20, a resolver signal inductor 80, a first bearing 30, and a second bearing 40; the resolver signal inductor 80 includes a resolver signal induction transmission shaft 70 and a resolver signal integration device 82; the resolver signal induction transmission shaft 70 is connected to the crank connecting rod module 20 and rotates synchronously with the crank connecting rod module 20; the outer ring of the first bearing 30 is fixed in the housing 10, and one end of the crank connecting rod module 20 connected to the resolver signal induction transmission shaft 70 is fixedly inserted into the inner ring of the first bearing 30; the central axis of the first bearing 30 coincides with the central axis of the second bearing 40; the support member 50 is detachably connected to the housing 10, and the support member 50 is provided with an installation cavity 15; the outer ring of the second bearing 40 is fixed in the installation cavity 15, and the resolver signal induction transmission shaft 70 is fixedly inserted into the inner ring of the second bearing 40; a resolver signal inductor rotor 81 is provided on the resolver signal induction transmission shaft 70; the resolver signal integration device 82 is fixed on the support member 50 and corresponds to the resolver signal inductor rotor 81.

[0024] A engine speed induction component convenient for maintenance provided by the utility model combines a housing 10, a support member 50, a crank connecting rod module 20, a resolver signal inductor 80, a first bearing 30 and a second bearing 40. The resolver signal induction transmission shaft 70 is connected to the crank connecting rod module 20, the support member 50 is detachably connected to the housing 10, the outer ring of the second bearing 40 is fixed in the installation cavity 15, the resolver signal induction transmission shaft 70 is fixedly inserted into the inner ring of the second bearing 40, and the resolver signal integration device 82 is fixed on the support member 50. When the resolver signal inductor 80 fails, the support member 50 can be first disassembled from the housing 10. During the process of disassembling the support member 50, the resolver signal induction transmission shaft 70 can be separated from the crank connecting rod module 20, so that the resolver signal induction transmission shaft 70 and the resolver signal integration device 82 can be disassembled together with the support member 50, and then the detection of the resolver signal inductor 80 can be carried out, without separately disassembling the resolver signal induction transmission shaft 70 and the resolver signal integration device 82 from the inside of the housing 10 for detection. Thus, the detection of the resolver signal inductor 80 is facilitated, time can be saved and efficiency can be improved. Moreover, after the resolver signal induction transmission shaft 70 is disassembled together with the support member 50, by removing the resolver signal induction transmission shaft 70 from the inner ring of the second bearing 40, the disassembly of the resolver signal induction transmission shaft 70 can be realized, which is convenient for the disassembly of the resolver signal induction transmission shaft 70 and helps for the subsequent rapid replacement of the resolver signal induction transmission shaft 70.

[0025] The housing 10 is provided with an embedding groove 16. The support member 50 includes a mounting seat 51. One end of the mounting seat 51 is formed as an embedding end 22. The embedding end 22 of the mounting seat 51 is embedded in the embedding groove 16. The installation cavity 15 is formed on the embedding end 22 of the mounting seat 51, which is convenient for the installation and positioning between the mounting seat 51 and the housing 10.

[0026] The mounting seat 51 is provided with an outwardly protruding outer convex wall 54. The outer convex wall 54 is detachably connected to the housing 10.

[0027] Wherein, the outer convex wall 54 can be connected to the housing 10 through screws, clamping parts, etc., as long as the outer convex wall 54 can be detachably connected to the housing 10.

[0028] As a further preferred embodiment of the utility model, a gasket 93 can also be arranged between the outer convex wall 54 and the housing 10.

[0029] The resolver signal induction integrator 82 has a convex ring 83; the support member 50 includes a limiting piece 52, the limiting piece 52 is detachably connected to the mounting base 51, the mounting base 51 is provided with a mating surface, and the convex ring 83 of the resolver signal induction integrator 82 is clamped between the mating surface of the mounting base 51 and the limiting piece 52. By removing the limiting piece 52, the resolver signal induction integrator 82 can be disassembled, which is convenient for the disassembly of the resolver signal induction integrator 82 and thus helps the rapid replacement of the resolver signal induction integrator 82.

[0030] Preferably, the mounting base 51 is provided with a recessed groove for accommodating the convex ring 83 of the resolver signal induction integrator 82, and the top wall of the recessed groove forms a mating surface. By adopting the above setting, the fixing stability of the resolver signal induction integrator 82 can be improved.

[0031] Among them, the limiting piece 52 can be connected to the mounting base 51 through screws, clamping parts, etc., as long as the limiting piece 52 can be detachably connected to the mounting base 51.

[0032] The resolver signal induction transmission shaft 70 is inserted and fitted with the crank connecting rod module 20; the crank connecting rod module 20 is provided with an insertion hole 21, the resolver signal induction transmission shaft 70 is provided with an insertion end 31, and the insertion end 31 of the resolver signal induction transmission shaft 70 is inserted into the insertion hole 21. By adopting the above structure, while the crank connecting rod module 20 and the resolver signal induction transmission shaft 70 are inserted and fitted to rotate synchronously, it is also convenient for processing and installation.

[0033] Preferably, the cross section of the insertion hole 21 is rectangular, and the shape of the insertion end 31 matches the shape of the insertion hole 21.

[0034] Of course, in addition, the structures of the crank connecting rod module 20 and the resolver signal induction transmission shaft 70 can also be set according to actual needs, as long as the crank connecting rod module 20 and the resolver signal induction transmission shaft 70 can be inserted and fitted. However, setting the crank connecting rod module 20 with an insertion hole 21 and the resolver signal induction transmission shaft 70 with an insertion end 31 is the most preferred embodiment of the present invention, which is convenient for processing.

[0035] A fixed cavity 14 is formed in the housing 10, and the outer ring of the first bearing 30 is fixed in the fixed cavity 14 of the support housing 10, which is convenient for the installation of the first bearing 30.

[0036] A lubricating oil passage 11, a first lubricating oil injection hole 12, and a second lubricating oil injection hole 13 are formed in the housing 10; the first lubricating oil injection hole 12 communicates with the lubricating oil passage 11, and the first lubricating oil injection hole 12 faces the ball rolling interval of the first bearing 30; the second lubricating oil injection hole 13 communicates with the lubricating oil passage 11, and the second lubricating oil injection hole 13 faces the ball rolling interval of the second bearing 40, so as to fully lubricate the first bearing 30 and the second bearing 40, and ensure the smooth rotation of the crank connecting rod module 20 and the resolver signal induction transmission shaft 70 after long-term use.

[0037] Wherein, the housing 10 can be a box cover or the like.

[0038] Preferably, a rotor positioning shoulder 71 is provided on the resolver signal induction transmission shaft 70, and a locking member 90 is detachably connected to the resolver signal induction transmission shaft 70. The resolver signal sensor rotor 81 is sleeved on the resolver signal induction transmission shaft 70 and is restricted between the rotor positioning shoulder 71 and the locking member 90. By adopting the above structure, the disassembly and replacement of the resolver signal sensor rotor 81 can be facilitated.

[0039] In this embodiment, the locking member 90 includes a gasket 91 and a locking nut 92. The locking nut 92 is threadedly connected to the resolver signal induction transmission shaft 70, and the gasket 91 abuts between the resolver signal sensor rotor 81 and the locking nut 92.

[0040] Of course, the locking member 90 can also be other according to actual needs, but the combination of the gasket 91 and the locking nut 92 for the locking member 90 is the most preferred embodiment of the present invention, which can facilitate disassembly and assembly and reduce costs at the same time.

[0041] An oil seal 84 is provided in the support member 50 between the resolver signal sensor rotor 81 and the second bearing 40. The oil seal 84 is provided with a through hole, and the resolver signal induction transmission shaft 70 passes through the through hole. Through the sealing action of the oil seal 84, lubricating oil can be prevented from flowing from the second bearing 40 to the resolver signal sensor rotor 81.

[0042] The oil seal 84 includes a main sleeve body 85 and a collar 86 sleeved on the main sleeve body 85. The main sleeve body 85 is provided with a circumferential groove, and the collar 86 is sleeved in the circumferential groove of the main sleeve body 85, so that the oil seal 84 is tightly connected to the resolver signal induction transmission shaft 70 to prevent oil leakage towards the resolver signal sensor rotor 81.

[0043] Of course, the oil seal 84 can adopt any existing oil seal on the market, and is not limited to the above structure, as long as it can play a sealing role.

[0044] The resolver signal induction transmission shaft 70 is provided with a bearing positioning shoulder 72 at a position between the first bearing 30 and the second bearing 40. The bearing positioning shoulder 72 abuts against the inner ring of the second bearing 40. By adopting the above arrangement, the resolver signal induction transmission shaft 70 can be axially limited by the second bearing 40.

[0045] The above embodiments are only the preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantive changes and substitutions made by those skilled in the art on the basis of the present invention fall within the scope of protection required by the present invention.

Claims

1. An engine speed sensing assembly that is easy to repair, characterized in that: It includes a shell, a supporting member, a crank-connecting rod module, a resolver signal sensor, a first bearing and a second bearing; the resolver signal sensor includes a resolver signal sensing transmission shaft and a resolver signal sensing integrator; the resolver signal sensing transmission shaft is connected to the crank-connecting rod module, and the resolver signal sensing transmission shaft and the crank-connecting rod module rotate synchronously; the outer ring of the first bearing is fixed in the shell, and one end of the crank-connecting rod module connected to the resolver signal sensing transmission shaft is fixedly inserted in the inner ring of the first bearing; the supporting member is connected to the shell in a detachable manner, and the supporting member is provided with an installation cavity; the outer ring of the second bearing is fixed in the installation cavity; the resolver signal sensing transmission shaft is fixedly inserted in the inner ring of the second bearing; a resolver signal sensor rotor is provided on the resolver signal sensing transmission shaft; the resolver signal sensing integrator is fixed on the supporting member and corresponds to the resolver signal sensor rotor.

2. The engine speed sensing assembly for easy maintenance as claimed in claim 1, characterized in that: The housing is provided with an embedding groove, the supporting member comprises a mounting seat, one end of the mounting seat is formed as an embedding end, the embedding end of the mounting seat is embedded in the embedding groove, and the mounting cavity is formed on the embedding end of the mounting seat.

3. The engine speed sensing assembly for easy maintenance as claimed in claim 2, characterized in that: The mounting seat is provided with an outwardly protruding wall, and the outwardly protruding wall is connected to the shell in a detachable manner.

4. The engine speed sensing assembly for easy maintenance as claimed in claim 2, characterized in that: The resolver signal sensing integrator has a convex ring; the supporting member includes a limiting plate, which is detachably connected to the mounting seat, the mounting seat is provided with a mating surface, and the convex ring of the resolver signal sensing integrator is clamped between the mating surface of the mounting seat and the limiting plate.

5. The engine speed sensing assembly for easy maintenance as claimed in claim 1, characterized in that: The resolver signal sensing transmission shaft is plug-fitted with the crank-connecting rod module; the crank-connecting rod module is provided with a plug-in hole, and the resolver signal sensing transmission shaft is provided with a plug-in end, and the plug-in end of the resolver signal sensing transmission shaft is plug-fitted into the plug-in hole.

6. The engine speed sensing assembly for easy maintenance as claimed in claim 5, characterized in that: The cross section of the plug hole is rectangular, and the shape of the plug terminal matches the shape of the plug hole.

7. The engine speed sensing assembly for easy maintenance as claimed in claim 1, characterized in that: A fixed cavity is formed in the housing, and the outer ring of the first bearing is fixed in the fixed cavity of the housing.

8. The engine speed sensing assembly for easy maintenance as claimed in claim 1, characterized in that: The resolver signal sensing transmission shaft is provided with a bearing positioning shoulder at a position between the first bearing and the second bearing, and the bearing positioning shoulder abuts against the inner ring of the second bearing.

9. The engine speed sensing assembly for easy maintenance according to any one of claims 1 to 8, characterized in that: A rotor positioning shoulder is provided on the resolver signal sensing transmission shaft, and a locking piece is detachably connected to the resolver signal sensing transmission shaft. The resolver signal sensor rotor is sleeved on the resolver signal sensing transmission shaft and confined between the rotor positioning shoulder and the locking piece.

10. The engine speed sensing assembly for easy maintenance as claimed in claim 9, characterized in that: An oil seal is arranged in the support component and is located between the rotor of the resolver signal sensor and the second bearing. The oil seal is provided with a penetration hole, and the resolver signal sensor transmission shaft is penetrated in the penetration hole.

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