Timing positioning assembly of engine and engine
By designing a simplified engine timing positioning assembly, the installation section and positioning section of the timing positioning member are used to solve the problems of many parts and complex structures in the prior art, and simpler maintenance operations and reduced maintenance costs are achieved.
Patent Information
- Application Number
- CN202420861090.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-23
- Publication Date
- 2025-03-21
- Estimated Expiration
- 2034-04-23
AI Technical Summary
There are many parts and complex structures of the existing engine timing positioning devices, resulting in cumbersome maintenance operations and high cost.
An engine timing positioning assembly including a flywheel housing, a flywheel and a timing positioning structure is designed. By cooperating with the mounting section and the positioning section of the timing positioning member, timing positioning is achieved, the number of parts is reduced and the structure is simplified.
It reduces the number of parts and structural complexity, simplifies after-sales maintenance operations, improves maintenance convenience and efficiency, and reduces maintenance costs.
Smart Images
Figure CN222650049U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of engines, in particular to a timing positioning component of an engine and an engine. Background Art
[0002] At present, the accuracy of engine timing positioning is one of the main indicators reflecting engine performance. Its main function is to keep the piston stroke, valve opening and closing, and valve timing angle "synchronous" when the engine is running, that is, through the timing mechanism of the engine, each cylinder is just done: the piston starts when it reaches the top dead center, the valve is just closed, and a series of actions are completed in sequence, so that the engine completes a working cycle, over and over again. The more accurate the timing positioning, the smaller the motion state error of other components, and the more normal the engine works, and vice versa.
[0003] In the prior art, the engine timing positioning device includes a flywheel, a flywheel housing, a timing pin seat, a timing pin, a timing pin locking plate, a locking nut, and a stud bolt. The outer circumferential surface of the flywheel is provided with a timing mark groove, a timing pin seat is installed on the flywheel housing, and coaxial through holes are provided on the flywheel housing and the timing pin seat, through which the middle part of the timing pin passes so that the front end of the timing pin is inserted into the timing mark groove. The middle part of the timing pin is provided with a timing pin slot, a timing pin locking plate is clamped in the timing pin slot, the timing pin locking plate is installed on the stud bolt, and the timing pin locking plate is fastened to the timing pin seat by the locking nut.
[0004] When performing timing positioning, first loosen the locking nut and disengage the timing pin locking plate from the timing pin slot. At this time, the timing pin can move axially in the through hole of the timing pin seat; then rotate the flywheel so that the timing pin is inserted into the timing mark slot on the flywheel to complete the timing positioning.
[0005] After completing the timing positioning, the timing pin can be pulled outward so that the timing pin is completely out of the timing mark groove on the flywheel. At this time, insert the timing pin locking plate into the timing pin slot, and then tighten the timing pin locking plate with the locking nut for use in repairs.
[0006] The timing positioning device is provided with four parts in addition to the flywheel and the flywheel housing, and has many parts and a complex structure. Utility Model Content
[0007] In view of this, the utility model provides a timing positioning assembly of an engine and an engine, so as to solve the problem that the timing positioning device has many parts and a complex structure.
[0008] In the first aspect, the utility model provides a timing positioning assembly of an engine, comprising: a flywheel housing; a flywheel rotatably arranged in the flywheel housing; a timing positioning structure, comprising a timing positioning member, a timing mounting hole and a timing positioning hole, the timing positioning hole being arranged on the flywheel, the timing mounting hole being arranged on the flywheel housing, the timing positioning member having a mounting section and a positioning section, the outer diameter of the mounting section being larger than the outer diameter of the positioning section, the timing positioning member having a forward installation state in which the mounting section is installed in the timing mounting hole, and the timing positioning member also having a reverse positioning state in which the positioning section passes through the timing mounting hole and is inserted into the timing positioning hole.
[0009] Beneficial effects: During normal assembly, the mounting section of the timing locating piece is installed in the timing mounting hole, so that the timing mounting piece is in a forward installation state, and the timing locating piece is used as a plug; during timing positioning, the timing locating piece is removed from the timing mounting hole, and then one end of the timing locating piece is swapped, and the timing locating piece is used as a positioning tool, and the positioning section is passed through the timing mounting hole and inserted into the timing positioning hole to achieve timing positioning. In addition to the flywheel housing and the flywheel, the timing positioning component is only provided with one timing locating piece, with a small number of parts and a simple structure. During after-sales maintenance of timing positioning, it is only necessary to remove the timing locating piece and change the direction to achieve it. The operation is simple and the positioning is accurate, which improves the convenience of after-sales maintenance operations, and there is no need to remove the gearbox and flywheel housing, thereby reducing maintenance costs.
[0010] In an optional embodiment, the timing positioning member further has an optical axis segment, and the positioning segment, the optical axis segment and the mounting segment are arranged in sequence. When the timing positioning member is in a reverse positioning state, the optical axis segment is located in the timing mounting hole.
[0011] Beneficial effect: During timing positioning, directly insert the positioning section of the timing positioning piece through the timing mounting hole into the timing positioning hole, and the optical axis section is just located in the timing mounting hole. After the timing positioning is completed, directly pull out the timing positioning piece. During timing positioning, there is no need to install the mounting section in the timing mounting hole. The operation only requires insertion and removal, which is easy and labor-saving.
[0012] In an optional implementation, the outer diameter of the optical axis segment is larger than the outer diameter of the positioning segment.
[0013] Beneficial effect: during timing positioning, it is convenient for the optical axis section to match with the timing mounting hole.
[0014] In an optional embodiment, the timing positioning member further has a protruding limiting section located between the installation section and the positioning section.
[0015] Beneficial effect: When the timing positioning member is in the forward installation state, the protruding limiting section cooperates with the outer portion of the flywheel housing located at the timing installation hole to prevent the timing positioning member from being inserted too deeply and interfering with the flywheel.
[0016] In an optional embodiment, the timing mounting hole is arranged on the side of the flywheel housing and close to the bottom of the flywheel housing.
[0017] Beneficial effect: The location of the timing mounting hole fully utilizes the position of the lower side of the flywheel housing, does not affect the installation of other components, and effectively avoids the interference between the timing positioning part and other components.
[0018] In an optional embodiment, the axis of the timing locator is parallel to the axis of the flywheel.
[0019] Beneficial effects: The axes of the timing positioning hole and the timing mounting hole are parallel to the axis of the flywheel, which facilitates the processing of the timing positioning hole, the timing mounting hole and the timing positioning part, and reduces the processing difficulty.
[0020] In an optional embodiment, the end of the positioning section away from the installation section is a guide head.
[0021] Beneficial effect: The guide head plays a guiding role, making it convenient for the positioning section to be inserted into the timing positioning hole.
[0022] In an optional embodiment, the mounting section is threadedly connected to the timing mounting hole.
[0023] Beneficial effect: When disassembling and assembling the timing positioning part, it is only necessary to screw the timing positioning part, which is easy and labor-saving to operate.
[0024] In an optional embodiment, the timing locating member is a timing locating pin.
[0025] Beneficial effects: The timing locating pin has a simple structure and is easy to implement. The timing locating pin can be plugged in and out of the timing locating hole to directly identify the top dead center of a cylinder piston. There is no need to disassemble the flywheel housing and the gearbox to check and confirm the gear timing mark, which can effectively reduce after-sales maintenance costs and improve maintenance efficiency.
[0026] In a second aspect, the utility model further provides an engine, comprising: a cylinder block; a gear chamber arranged on the cylinder block; the above-mentioned timing positioning assembly, wherein the flywheel housing of the timing positioning assembly is arranged on the gear chamber. BRIEF DESCRIPTION OF THE DRAWINGS
[0027] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0028] Figure 1 A cross-sectional view of an engine according to an embodiment of the utility model;
[0029] Figure 2 for Figure 1 A partial enlarged schematic diagram of the engine is shown.
[0030] Description of reference numerals:
[0031] 1. Flywheel housing; 101. Mounting hole;
[0032] 2. Flywheel; 201. Timing positioning hole;
[0033] 3. Timing positioning member; 301. Installation section; 302. Positioning section; 303. Optical axis section; 304. Protruding limiting section;
[0034] 4. Cylinder block;
[0035] 5. Gear room. DETAILED DESCRIPTION
[0036] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.
[0037] Combine the following Figure 1 and Figure 2 , describing an embodiment of the utility model.
[0038] According to an embodiment of the utility model, on the one hand, a timing positioning assembly of an engine is provided, comprising: a flywheel housing 1, a flywheel 2 and a timing positioning structure; the flywheel 2 is rotatably arranged in the flywheel housing 1; the timing positioning structure comprises a timing positioning member 3, a timing mounting hole 101 and a timing positioning hole 201, the timing positioning hole 201 is arranged on the flywheel 2, the timing mounting hole 101 is arranged on the flywheel housing 1, the timing positioning member 3 has a mounting section 301 and a positioning section 302, the outer diameter of the mounting section 301 is larger than the outer diameter of the positioning section 302, the timing positioning member 3 has a forward installation state in which the mounting section 301 is installed in the timing mounting hole 101, and the timing positioning member 3 also has a reverse positioning state in which the positioning section 302 passes through the timing mounting hole 101 and is inserted into the timing positioning hole 201.
[0039] When applying the timing positioning assembly of this embodiment, during normal assembly, the mounting section 301 of the timing positioning member 3 is installed in the timing mounting hole 101, so that the timing mounting member 3 is in a forward mounting state, and the timing positioning member 3 is used as a plug; during timing positioning, the timing positioning member 3 is removed from the timing mounting hole 101, and then one end of the timing positioning member 3 is replaced, and the timing positioning member 3 is used as a positioning tool, and the positioning section 302 is inserted through the timing mounting hole 101 into the timing positioning hole 201 to achieve timing positioning. In addition to the flywheel housing 1 and the flywheel 2, the timing positioning assembly is only provided with one timing positioning member 3, with a small number of parts and a simple structure. When performing after-sales maintenance of timing positioning, it is only necessary to remove the timing positioning member 3 and change the direction to achieve it. The operation is simple and the positioning is accurate, which improves the convenience of after-sales maintenance operation, and there is no need to dismantle the gearbox and the flywheel housing 1, thereby reducing the maintenance cost.
[0040] In one embodiment, Figure 1 and Figure 2 As shown, the timing positioning member 3 also has an optical axis segment 303, and the positioning segment 302, the optical axis segment 303 and the mounting segment 301 are arranged in sequence. When the timing positioning member 3 is in the reverse positioning state, the optical axis segment 303 is located in the timing mounting hole 101. During the timing positioning, the positioning segment 302 of the timing positioning member 3 is directly inserted into the timing positioning hole 201 through the timing mounting hole 101, and the optical axis segment 303 is just located in the timing mounting hole 101. After the timing positioning is completed, the timing positioning member 3 can be directly pulled out. During the timing positioning, there is no need to install the mounting segment 301 in the timing mounting hole 101. The operation only needs to be inserted and pulled out, which is simple and labor-saving.
[0041] In another embodiment, the optical axis segment 203 may not be provided. During timing positioning, the positioning segment 302 is located in the timing positioning hole 201, and the mounting segment 301 is located in the timing mounting hole 101. During timing positioning, the mounting segment 301 needs to be installed in the timing positioning hole 201.
[0042] In one embodiment, the outer diameter of the optical axis segment 303 is greater than the outer diameter of the positioning segment 302 , which facilitates the optical axis segment 303 to cooperate with the timing mounting hole 101 during timing positioning.
[0043] Furthermore, the outer diameter of the optical axis section 303 is slightly smaller than the outer diameter of the mounting section 301. During the timing positioning, the gap between the optical axis section 303 and the timing mounting hole 101 is small, ensuring that the positioning section 302 is accurately inserted into the timing positioning hole 201. Specifically, the gap between the optical axis section 303 and the timing mounting hole 101 is about 0.2 mm.
[0044] In one embodiment, the timing positioning member 3 also has a protruding limiting section 304 located between the installation section 301 and the positioning section 302. When the timing positioning member 3 is in a forward installation state, the protruding limiting section 304 cooperates with the outer portion of the flywheel housing 1 located at the timing mounting hole 101 to prevent the timing positioning member 3 from being inserted too deeply and interfering with the flywheel 2.
[0045] In one embodiment, Figure 1 and Figure 2 As shown, the timing installation hole 101 is arranged on the side of the flywheel housing 1 and close to the bottom of the flywheel 1. The setting position of the timing installation hole 101 fully utilizes the position of the lower side of the flywheel housing 1, does not affect the installation of other components, and effectively avoids the timing positioning member 3 from interfering with other components.
[0046] In one embodiment, the axis of the timing positioning member 3 is parallel to the axis of the flywheel 2, and the axes of the timing positioning hole 201 and the timing mounting hole 101 are parallel to the axis of the flywheel 2, which facilitates the processing of the timing positioning hole 201, the timing mounting hole 101, and the timing positioning member 3 and reduces the processing difficulty.
[0047] In another embodiment, the axis of the timing locator 3 is not parallel to the axis of the flywheel 2 .
[0048] In one embodiment, one end of the positioning segment 302 away from the installation segment 301 is a guide head, which plays a guiding role to facilitate the positioning segment 302 to be inserted into the timing positioning hole 201.
[0049] In one embodiment, the mounting section 301 is threadedly connected to the timing mounting hole 101. When disassembling or assembling the timing positioning member 3, it is only necessary to screw the timing positioning member 3, which is easy and labor-saving to operate.
[0050] In one embodiment, the timing locating member 3 is a timing locating pin, which has a simple structure and is easy to implement. The timing locating pin can be plugged in and out of the timing locating hole 201 to directly identify the top dead center of a cylinder piston. There is no need to disassemble the flywheel housing 1 and the gearbox to check and confirm the gear timing mark, which can effectively reduce after-sales maintenance costs and improve maintenance efficiency.
[0051] According to an embodiment of the utility model, on the other hand, an engine is also provided, comprising: a cylinder block 4, a gear chamber 5 and the above-mentioned timing positioning assembly; the gear chamber 5 is arranged on the cylinder block 4; and the flywheel housing 1 of the timing positioning assembly is arranged on the gear chamber 5.
[0052] The mounting section 301 of the timing locating pin is installed in the timing mounting hole 101 on the flywheel housing 1, so that the timing locating pin is used as a screw plug during normal assembly. The timing positioning is achieved by the timing locating pin in conjunction with the timing locating hole 201 and the scale on the flywheel 2. During after-sales maintenance, the timing locating pin can be directly removed and the other end can be replaced to serve as a positioning tool. The timing position can be directly confirmed by inserting the timing locating pin into the timing locating hole 201. There is no need to disassemble the gearbox and the flywheel housing 1, thereby reducing the after-sales maintenance cost. The timing positioning assembly has fewer parts and can simplify the structure. The timing locating pin is achieved through design tolerance limitations and machined parts, and the operation is simple and the positioning is accurate.
[0053] Although the embodiments of the present invention are described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the appended claims.
Claims
1. A timing positioning assembly for an engine, characterized in that: include: Flywheel housing (1); A flywheel (2) rotatably disposed in the flywheel housing (1); A timing positioning structure comprises a timing positioning member (3), a timing mounting hole (101) and a timing positioning hole (201), wherein the timing positioning hole (201) is arranged on the flywheel (2), and the timing mounting hole (101) is arranged on the flywheel housing (1). The timing positioning member (3) comprises a mounting section (301) and a positioning section (302), wherein the outer diameter of the mounting section (301) is greater than the outer diameter of the positioning section (302), and the timing positioning member (3) has a forward mounting state in which the mounting section (301) is mounted in the timing mounting hole (101), and the timing positioning member (3) also has a reverse positioning state in which the positioning section (302) passes through the timing mounting hole (101) and is inserted into the timing positioning hole (201).
2. The timing positioning assembly according to claim 1, characterized in that: The timing positioning member (3) further comprises an optical axis segment (303), wherein the positioning segment (302), the optical axis segment (303) and the mounting segment (301) are arranged in sequence, and when the timing positioning member (3) is in the reverse positioning state, the optical axis segment (303) is located in the timing mounting hole (101).
3. The timing positioning assembly according to claim 2, characterized in that: The outer diameter of the optical axis section (303) is greater than the outer diameter of the positioning section (302).
4. The timing positioning assembly according to any one of claims 1 to 3, characterized in that: The timing positioning member (3) also has a protruding limiting section (304) located between the installation section (301) and the positioning section (302).
5. The timing positioning assembly according to any one of claims 1 to 3, characterized in that: The timing installation hole (101) is arranged on the side of the flywheel housing (1) and close to the bottom of the flywheel housing (1).
6. The timing positioning assembly according to any one of claims 1 to 3, characterized in that: The axis of the timing positioning member (3) is parallel to the axis of the flywheel (2).
7. The timing positioning assembly according to any one of claims 1 to 3, characterized in that: One end of the positioning section (302) away from the installation section (301) is a guide head.
8. The timing positioning assembly according to any one of claims 1 to 3, characterized in that: The mounting section (301) is threadedly connected to the timing mounting hole (101).
9. The timing positioning assembly according to any one of claims 1 to 3, characterized in that: The timing positioning member (3) is a timing positioning pin.
10. An engine, characterized in that: include: Cylinder block (4); A gear chamber (5) is arranged on the cylinder body (4); The timing positioning assembly according to any one of claims 1 to 9, wherein the flywheel housing (1) of the timing positioning assembly is arranged on the gear chamber (5).