Detachable crankshaft of engine

Abstract

The utility model discloses a detachable crankshaft of an engine, which comprises a front end, a main journal is arranged on one side of the front end, a connecting journal is arranged on the outer wall of the main journal, and an output end is arranged on the outer wall of the main journal; the main journal comprises a journal body, an operation groove is formed in the inner wall of the journal body, a plurality of connecting holes are formed in the inner wall of the operation groove at equal intervals, and threaded grooves are formed in the inner walls of the connecting holes; through the arrangement of the main journal, during use and installation, the main journal and the front end are fixedly connected through a connecting hole by means of a bolt by means of a small drilling machine; according to the detachable crankshaft of the engine, through the arrangement of the main journal, when the detachable crankshaft is used and installed, the main journal and the front end are fixedly connected through the connecting holes by means of a small drilling machine and bolts, the main journal and the front end can be disassembled through the same operation, and through the arrangement of the connecting journal, when the detachable crankshaft is used, the connecting journal can be rotationally disassembled from the journal body by rotating the connecting shaft.

Description

Technical Field

[0001] The utility model relates to the field of crankshafts, in particular to a detachable crankshaft of an engine. Background Art

[0002] The crankshaft is the most important part of the engine. It bears the force from the connecting rod and converts it into torque, which is output through the crankshaft and drives other accessories on the engine. The crankshaft is subjected to the combined effects of the centrifugal force of the rotating mass, the periodically changing gas inertia force and the reciprocating inertia force, which makes the crankshaft subject to bending and torsion loads. Therefore, the crankshaft is required to have sufficient strength and rigidity, and the journal surface must be wear-resistant, work evenly and have good balance.

[0003] The existing technology has the following problems:

[0004] In the prior art, the engine crankshaft is generally fixed and cannot be disassembled, so the installation and maintenance are troublesome and the practicality is low. Therefore, it is necessary to design a detachable engine crankshaft. Utility Model Content

[0005] In view of the problems in the related technology, the utility model proposes a detachable crankshaft of an engine to overcome the above technical problems existing in the existing related technology.

[0006] To this end, the specific technical solution adopted by the utility model is as follows: a detachable crankshaft of an engine, comprising a front end, a main journal is arranged on one side of the front end, a connecting journal is arranged on the outer wall of the main journal, and an output end is arranged on the outer wall of the main journal;

[0007] The main shaft journal comprises a neck body, an inner wall of the neck body is provided with an operating groove, and an inner wall of the operating groove is provided with a connecting hole.

[0008] Preferably, there are multiple connecting holes, and the multiple connecting holes are equidistantly arranged, and the inner walls of the connecting holes are made into threaded grooves; through the setting of the main shaft neck, when using and installing, with the help of a small drill, the main shaft neck and the front end are fixedly connected through the connecting holes with bolts, and the main shaft neck and the front end can be disassembled by the same operation, which improves the use effect of the device and provides convenience for the user.

[0009] Preferably, the output end includes a limit connection seat fixedly arranged on the outer wall of the main shaft neck, one end of the limit connection seat is fixedly connected to a flange, the outer walls on both sides of the flange are provided with a plurality of heat dissipation grooves, and the outer wall of the flange is equidistantly arranged with a plurality of mounting holes.

[0010] Preferably, the outer wall of the limit connecting seat is provided with two limit strips, and the two limit strips are symmetrically arranged on the outer wall of the limit connecting seat; through the setting of the output end, the purpose of facilitating the connection and fixing of the flywheel can be achieved, wherein the setting of the output end can achieve a better limiting effect, facilitate the installation of the flywheel, improve the use effect of the device, and provide convenience for the user.

[0011] Preferably, the connecting journal comprises a connecting shaft threadedly connected to the inner wall of the main journal, the outer wall of the connecting shaft is provided with a bearing, and the outer wall of the bearing is fittedly connected to an outer cylinder.

[0012] Preferably, an outer wall of the connecting shaft is provided with an indented groove, and the inner wall of the indented groove is movably connected to the inner wall of the bearing; through the setting of the connecting shaft neck, during use, the connecting shaft can be rotated and removed from the neck body by rotating the connecting shaft, thereby improving the use effect of the device and providing convenience for the user.

[0013] Preferably, the neck body comprises a central journal, and a balancing block is fixedly connected to the outer wall of the central journal.

[0014] Preferably, the front end comprises a limiting groove seat, the outer wall of the limiting groove seat is fixedly connected with a connector, and one side of the connector is provided with an oil filling hole;

[0015] Preferably, the connecting head is provided with a matching screw hole, the matching screw hole and the connecting hole are used in combination, and the matching screw hole and the inside of the connecting hole are fixedly connected by bolts; through the setting of the limiting slot seat in the front end, connection with the engine power output end can be achieved, and the setting of the oil filling hole can facilitate the addition of lubricating oil, thereby improving the use effect of the device and providing convenience for the user.

[0016] The beneficial effects of the utility model are as follows: 1. The engine has a detachable crankshaft. Through the setting of the main journal, when it is used and installed, with the help of a small drill, the main journal and the front end are fixedly connected with bolts through the connecting hole. The main journal and the front end can be disassembled by the same operation. Through the setting of the connecting journal, during use, the connecting shaft can be rotated and removed from the neck body, thereby improving the use effect of the device and providing convenience for the user.

[0017] 2. The engine has a detachable crankshaft, and the output end is set to facilitate the connection and fixation of the flywheel. The setting of the output end can achieve a better limiting effect, facilitate the installation of the flywheel, improve the use effect of the device, and provide convenience for users.

[0018] 3. The engine has a detachable crankshaft, which can be connected to the power output end of the engine through the setting of the limit slot seat in the front end. The setting of the oil filling hole can facilitate the addition of lubricating oil, thereby improving the use effect of the device and providing convenience for users. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 This is the front view of the utility model;

[0021] Figure 2 This is a schematic diagram of the structure of the connecting journal of the utility model;

[0022] Figure 3 It is a structural schematic diagram of the main shaft journal of the utility model;

[0023] Figure 4 This is a schematic diagram of the structure of the output end of the utility model;

[0024] Figure 5 This is a schematic diagram of the external structure of the front end of the utility model;

[0025] Figure 6 It is a cross-sectional view of the front end of the utility model.

[0026] In the figure: 1, front end; 101, connector; 102, limit slot seat; 103, oil filling hole; 2, output end; 201, flange; 202, limit connection seat; 203, heat dissipation groove; 3, connecting journal; 301, outer cylinder; 302, bearing; 303, connecting shaft; 4, main journal; 401, neck body; 402, connecting hole. DETAILED DESCRIPTION

[0027] To further illustrate each embodiment, the present invention provides drawings, which are part of the disclosure of the present invention and are mainly used to illustrate the embodiments. They can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, ordinary technicians in the field should be able to understand other possible implementation methods and advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0028] According to an embodiment of the utility model, a detachable crankshaft of an engine is provided.

[0029] Embodiment 1;

[0030] like Figure 1-Figure 6As shown, the detachable crankshaft of the engine according to the embodiment of the utility model comprises a front end 1, a main journal 4 is arranged on one side of the front end 1, a connecting journal 3 is arranged on the outer wall of the main journal 4, and an output end 2 is arranged on the outer wall of the main journal 4;

[0031] The main journal 4 includes a neck body 401, an inner wall of the neck body 401 is provided with an operating groove, and an inner wall of the operating groove is provided with a connecting hole 402;

[0032] There are multiple connecting holes 402, and the multiple connecting holes 402 are arranged at equal distances, and the inner wall of the connecting hole 402 is made into a thread groove;

[0033] The connecting journal 3 includes a connecting shaft 303 threadedly connected to the inner wall of the main journal 4, a bearing 302 is arranged on the outer wall of the connecting shaft 303, and an outer cylinder 301 is fittedly connected to the outer wall of the bearing 302;

[0034] An outer wall of the connecting shaft 303 is provided with an inner recessed groove, and the inner wall of the inner recessed groove is fitted and movably connected with the inner wall of the bearing 302 .

[0035] In this embodiment, through the setting of the main journal 4, when using and installing, with the help of a small drill, bolts are used to fix the main journal 4 and the front end 1 through the connecting hole 402. The same operation can be used to disassemble the main journal 4 and the front end 1, thereby improving the use effect of the device and providing convenience for the user.

[0036] In this embodiment, by setting the connecting journal 3, during use, by rotating the connecting shaft 303, the connecting journal 3 can be rotated and removed from the neck body 401, thereby improving the use effect of the device and providing convenience for the user.

[0037] Embodiment 2:

[0038] On the basis of the first embodiment, the preferred embodiment of the detachable crankshaft of the engine provided by the present invention is as follows: Figure 1-Figure 6 As shown: the output end 2 includes a limit connection seat 202 fixedly arranged on the outer wall of the main journal 4, one end of the limit connection seat 202 is fixedly connected to a flange 201, and the outer walls of both sides of the flange 201 are provided with a plurality of heat dissipation grooves 203, and the outer wall of the flange 201 is equidistantly arranged with a plurality of mounting holes;

[0039] The outer wall of the limiting connection seat 202 is provided with two limiting strips, and the two limiting strips are symmetrically arranged on the outer wall of the limiting connection seat 202 .

[0040] In this embodiment, the purpose of facilitating the connection and fixing of the flywheel can be achieved through the setting of the output terminal 2, wherein the setting of the output terminal 2 can achieve a better limiting effect, facilitate the installation of the flywheel, improve the use effect of the device, and provide convenience for the user.

[0041] Embodiment three;

[0042] On the basis of the first embodiment, the preferred embodiment of the detachable crankshaft of the engine provided by the present invention is as follows: Figure 1-Figure 6 As shown: the neck body 401 includes a central shaft neck, and a balancing block is fixedly connected to the outer wall of the central shaft neck;

[0043] The front end 1 includes a limiting groove seat 102, the outer wall of the limiting groove seat 102 is fixedly connected to a connector 101, and one side of the connector 101 is provided with an oil filling hole 103;

[0044] The connector 101 is provided with a matching screw hole, which is used in conjunction with the connecting hole 402 , and the matching screw hole and the connecting hole 402 are fixedly connected inside by bolts.

[0045] In this embodiment, the setting of the limiting groove seat 102 in the front end 1 can achieve connection with the engine power output end, and the setting of the oil filling hole 103 can facilitate the addition of lubricating oil, thereby improving the use effect of the device and providing convenience for the user.

[0046] In order to facilitate understanding of the above technical solution of the present invention, the working principle or operation method of the present invention in the actual process is described in detail below.

[0047] In actual application, first, the front end 1, the connecting journal 3 and the output end 2 are connected and assembled through the main journal 4: 1. When using the installation, use a small drill to fix the main journal 4 and the front end 1 with bolts through the connecting hole 402. The same operation can be used to disassemble the main journal 4 and the front end 1; 2. By rotating the connecting shaft 303, the connecting journal 3 can be rotated and removed from the neck body 401; finally, the crankshaft is installed through the front end 1 and the output end 2.

[0048] In summary, with the aid of the above-mentioned technical scheme of the utility model, the engine has a detachable crankshaft. Through the setting of the main journal 4, when using and installing, with the help of a small drill, the main journal 4 and the front end 1 are fixedly connected by bolts through the connecting hole 402. The same operation can be used to disassemble the main journal 4 and the front end 1. Through the setting of the connecting journal 3, during use, the connecting journal 3 can be rotated and removed from the neck body 401 by rotating the connecting shaft 303, which improves the use effect of the device and provides convenience for users; through the setting of the output end 2, the purpose of facilitating the connection and fixing of the flywheel can be achieved, wherein the setting of the output end 2 can achieve a better limiting effect, facilitate the installation of the flywheel, improve the use effect of the device, and provide convenience for users; through the setting of the limiting groove seat 102 in the front end 1, it can be connected to the engine power output end, and the setting of the oil filling hole 103 can facilitate the addition of lubricating oil, which improves the use effect of the device and provides convenience for users.

[0049] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A detachable engine crankshaft, comprising a front end (1), characterized in that: A main journal (4) is provided on one side of the front end (1), a connecting journal (3) is provided on the outer wall of the main journal (4), and an output end (2) is provided on the outer wall of the main journal (4); The main shaft journal (4) comprises a neck body (401), an inner wall of the neck body (401) is provided with an operating groove, and an inner wall of the operating groove is provided with a connecting hole (402).

2. A detachable engine crankshaft according to claim 1, characterized in that: There are multiple connection holes (402), and the multiple connection holes (402) are arranged at equal distances, and the inner walls of the connection holes (402) are formed into thread grooves.

3. The detachable engine crankshaft according to claim 1, characterized in that: The output end (2) comprises a limit connection seat (202) fixedly arranged on the outer wall of the main journal (4), one end of the limit connection seat (202) is fixedly connected to a flange (201), the outer walls on both sides of the flange (201) are provided with a plurality of heat dissipation grooves (203), and the outer wall of the flange (201) is provided with a plurality of mounting holes arranged in an equidistant ring.

4. A detachable engine crankshaft according to claim 3, characterized in that: The outer wall of the limit connection seat (202) is provided with two limit strips, and the two limit strips are symmetrically arranged on the outer wall of the limit connection seat (202).

5. The detachable engine crankshaft according to claim 1, characterized in that: The connecting journal (3) comprises a connecting shaft (303) threadedly connected to the inner wall of the main journal (4); a bearing (302) is provided on the outer wall of the connecting shaft (303); and an outer cylinder (301) is fittedly connected to the outer wall of the bearing (302).

6. A detachable engine crankshaft according to claim 5, characterized in that: The outer wall of the connecting shaft (303) is provided with an indented groove, and the inner wall of the indented groove is fitted and movably connected to the inner wall of the bearing (302).

7. The detachable engine crankshaft according to claim 1, characterized in that: The neck body (401) comprises a central shaft neck, and a balancing block is fixedly connected to the outer wall of the central shaft neck.

8. The detachable engine crankshaft according to claim 1, characterized in that: The front end (1) comprises a limiting groove seat (102), the outer wall of the limiting groove seat (102) is fixedly connected to a connecting head (101), and an oil filling hole (103) is provided on one side of the connecting head (101).

9. A detachable engine crankshaft according to claim 8, characterized in that: The connecting head (101) is provided with a matching screw hole, the matching screw hole and the connecting hole (402) are used in combination, and the matching screw hole and the connecting hole (402) are fixedly connected inside by bolts.

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