Timing assembly device

Abstract

The utility model discloses a timing assembly device. The timing assembly device comprises a body, a tensioning part and a detection part, the body is provided with a first connecting part and a second connecting part, and the first connecting part is used for being connected with an engine cylinder body; the tensioning part is connected with the second connecting part, the tensioning part is provided with a jacking and supporting part, the jacking and supporting part is used for abutting against a transmission piece in the timing system, and the jacking and supporting part can move in the direction close to or away from the transmission piece; the detection part is connected with the tensioning part to detect the pressure of the tensioning part acting on the transmission part, or the detection part is used for being connected with the transmission part to detect the tension of the transmission part after the tensioning part abuts against the transmission part. According to the timing assembly device, the assembly precision of a timing system can be improved, and phase deviation caused in the assembly process is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of equipment assembly, in particular to a timing assembly device. Background Art

[0002] Engine timing is an important part of the engine valve system. When the engine is running, the piston stroke, valve opening and closing, and ignition sequence are kept synchronously under the action of the timing system connection. In order to ensure the timing accuracy of the timing system during the assembly process, pin assembly or pinless assembly can be used.

[0003] In the related technology, pin assembly relies on three color marks on the timing chain or timing belt that correspond to the timing marks of the crankshaft sprocket or pulley, and the timing marks of the gear or pulley on the camshaft to ensure correct timing. The chain or belt has certain manufacturing tolerances, and there is also a certain elastic elongation during the tensioning process of the timing system, which leads to large phase angle deviations between the crankshaft and the camshaft, low timing accuracy, and reduced engine performance.

[0004] Pinless assembly relies on the spring force of the tensioner to directly tension the chain. Since the mechanical spring tension of the tensioner is much lower than the hydraulic tension during engine operation, the chain tension during the timing assembly process is lower than the actual tension, resulting in low timing assembly tension and causing the timing assembly phase to deviate in the lagging direction. Since it is impossible to provide quantified tension, the tension during the timing assembly process is unstable and the timing assembly phase difference is too high. Utility Model Content

[0005] The utility model aims to solve one of the technical problems in the related art at least to a certain extent.

[0006] To this end, an embodiment of the utility model provides a timing assembly device, which can improve the assembly accuracy of the timing system and reduce the phase deviation caused by the assembly process.

[0007] The timing assembly device according to the embodiment of the utility model comprises:

[0008] A body, the body having a first connection portion and a second connection portion, the first connection portion being used to connect to an engine cylinder block;

[0009] A tensioning component, the tensioning component is connected to the second connecting portion, the tensioning component has a supporting portion, the supporting portion is used to abut against a transmission member in the timing system, and the supporting portion can move in a direction close to or away from the transmission member;

[0010] A detection component is connected to the tensioning component to detect the pressure of the tensioning component on the transmission member, or the detection component is used to be connected to the transmission member to detect the tension of the transmission member after the tensioning component abuts against the transmission member.

[0011] In the timing assembly device of the embodiment of the utility model, the main body can be fixed on the engine cylinder block through the first connecting part, the main body can provide a support reaction force for the tensioning component, the tensioning component is directly or indirectly abutted against the transmission component, the tensioning component can adjust the tension of the transmission component in the timing system, and quantify the tension of the transmission component through the detection component, thereby ensuring that the tensioning degree of the transmission component during the timing assembly process meets the requirements, improving the assembly accuracy of the timing system, reducing the phase deviation caused by the assembly process, and thus improving the performance of the engine.

[0012] In some embodiments, the top support portion moves in a straight line relative to the body.

[0013] In some embodiments, the second connecting portion is a screw hole, the tensioning component has an external thread segment, the external thread segment is connected to the screw hole, and the supporting portion is movable along the axial direction of the screw hole.

[0014] In some embodiments, the tensioning component includes a driver, the driver is connected to the second connecting portion, the top support portion is arranged at the action end of the driver, and the driver is used to drive the top support portion to move toward the direction close to the transmission member or away from the transmission member.

[0015] In some embodiments, the detection component includes a pressure sensor, and the pressure sensor is arranged between the tensioning component and the transmission component.

[0016] In some embodiments, the detection component further includes a display instrument, and the display instrument is connected to the pressure sensor.

[0017] In some embodiments, the detection component is a tension detector.

[0018] In some embodiments, the first plate further comprises a first plate, one end of which comprises a third connection portion, the third connection portion being used for rotationally connecting with the engine cylinder block, the first plate comprising a first abutting surface, the first abutting surface being used for abutting with the transmission member;

[0019] The supporting portion abuts against a side of the other end of the first plate body away from the transmission member.

[0020] In some embodiments, the main body has a seat portion and a bracket portion, the seat portion extends along a first direction, a plurality of first connecting portions are arranged on the seat portion at intervals along the first direction, the bracket portion extends along a second direction, the second connecting portion is arranged on the bracket portion, and a preset angle is provided between the first direction and the second direction.

[0021] In some embodiments, a first groove is disposed on the seat body. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the assembly structure of the timing assembly device and the timing system of the embodiment of the utility model.

[0023] Figure 2 It is a schematic diagram of the connection structure between the main body and the tensioning component in the embodiment of the utility model.

[0024] Figure 3 It is a structural schematic diagram of the detection component in the embodiment of the utility model.

[0025] Reference numerals:

[0026] 1. body; 11. first connecting portion; 12. second connecting portion; 13. seat portion; 131. first slot; 14. bracket portion;

[0027] 2. tensioning member; 21. top support portion;

[0028] 3. Detection components; 31. Pressure sensor; 32. Display instrument; 33. Power adapter;

[0029] 41. Transmission parts; 42. Moving rail; 43. Fixed rail;

[0030] 5. Timing tensioner. DETAILED DESCRIPTION

[0031] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but cannot be understood as limiting the present invention.

[0032] like Figure 1-Figure 3As shown, the timing assembly device according to the embodiment of the utility model includes a body 1, a tensioning component 2 and a detection component 3. The body 1 has a first connecting portion 11 and a second connecting portion 12. The first connecting portion 11 is used to connect with the engine cylinder block. It should be understood that the body 1 is connected to the engine cylinder block through the first connecting portion 11, thereby forming a support to provide a support reaction force for the tensioning component 2. The original connecting hole on the engine cylinder block can be used. The first connecting portion 11 on the body 1 corresponds to the connecting hole on the engine cylinder block, and then the body 1 and the engine cylinder block are connected and fixed by connecting parts such as bolts.

[0033] The tensioning member 2 is connected to the second connecting portion 12, and the tensioning member 2 has a supporting portion 21, which is used to abut against the transmission member 41 in the timing system, and the supporting portion 21 can move in a direction close to or away from the transmission member 41. In other words, the tensioning member 2 is connected to the body 1, and the supporting portion 21 of the tensioning member 2 can move relative to the body 1, and the supporting portion 21 can move in a direction close to or away from the transmission member 41, so as to adjust the pressure of the supporting portion 21 and the transmission member 41 in the timing system. The supporting portion 21 and the transmission member 41 can be directly abutted or indirectly abutted. For example, a pad is provided between the supporting portion 21 and the transmission member 41 to increase the force-bearing area between the supporting portion 21 and the transmission member 41. For another example, with the help of the movable rail 42 in the tensioner of the timing system, the supporting portion 21 is in close contact with the movable rail 42, and then the transmission member 41 is supported by the movable rail 42 to adjust the tension of the transmission member 41.

[0034] In the timing assembly device of the embodiment of the utility model, the main body 1 can be fixed on the engine cylinder block through the first connecting part 11, the main body 1 can provide a support reaction force for the tensioning component 2, the tensioning component 2 is directly or indirectly abutted against the transmission component 41, and the tensioning component 2 can adjust the tension of the transmission component 41 in the timing system.

[0035] The detection component 3 is connected to the tension component 2 to detect the pressure exerted by the tension component 2 on the transmission member 41, or the detection component 3 is used to connect with the transmission member 41 to detect the tension of the transmission member 41 after the tension component 2 and the transmission member 41 abut against each other. It should be understood that the detection component 3 is used to quantify the tension of the transmission member 41. The detection component 3 can detect the pressure value exerted by the tension component 2 on the transmission member 41, and then quantify the tension on the transmission member 41. The detection component 3 can also directly detect the tension of the transmission member 41. By quantifying the tension on the transmission member 41, the adjustment of the tension component 2 is facilitated, and the tension degree of the transmission member 41 during the timing assembly process is ensured to meet the requirements, thereby improving the assembly accuracy of the timing system, reducing the phase deviation caused by the assembly process, and thus improving the performance of the engine.

[0036] For example, when the transmission member 41 of the timing system adopts a chain, a tensioner is also provided in the timing system. The fixed rail 43 and the movable rail 42 of the tensioner are used to abut the chain. At this time, the top support part 21 of the tensioning component 2 can abut the movable rail 42, thereby adjusting the tension of the chain. Since the tension of the chain is not easy to detect directly, the detection component 3 can detect the pressure of the top support part 21 on the movable rail 42, thereby quantifying the tension of the chain.

[0037] For another example, when the transmission member 41 in the timing system is a belt, a tensioner is not provided in the timing system, but an idler wheel and a tensioning wheel are provided. At this time, the top support portion 21 of the tensioning component 2 can directly abut against the belt, or a pad can be provided between the belt and the top support portion 21 so that the top support portion 21 and the belt are indirectly abutted. The tension of the belt is easy to detect, and therefore, the detection component 3 can directly detect the tension of the belt.

[0038] In some embodiments, the supporting portion 21 moves in a straight line relative to the body 1, and when the supporting portion applies pressure to the transmission member 41, the pressure can be more stable. When the supporting portion 21 moves in an arc relative to the body 1, only part of the force is effectively applied to the transmission member 41, and it is difficult to ensure that the direction of the force is perpendicular to the tangent direction of the transmission member 41.

[0039] In some embodiments, the second connection portion 12 is a screw hole, the tensioning member 2 has an external thread section, the external thread section is connected to the screw hole, and the top support portion 21 is movable along the axial direction of the screw hole. The screw hole faces the transmission member 41, and the tensioning member 2 rotates forward and backward in the screw hole, so that the top support portion 21 of the tensioning member 2 can move toward the direction close to the transmission member 41 or move away from the transmission member 41, so that the tensioning degree of the transmission member 41 can be adjusted.

[0040] Optionally, the tensioning component 2 is a bolt. When the bolt is rotated in the forward direction, the bolt supports the transmission member 41 and further moves toward the transmission member 41, and the tensioning degree of the transmission member 41 gradually increases until the requirements of the timing assembly are met. When the bolt is rotated in the reverse direction, the bolt moves away from the transmission member 41, and the tensioning degree of the transmission member 41 gradually decreases.

[0041] In some embodiments, the tensioning component 2 includes a driver, which is connected to the second connecting portion 12, and the supporting portion 21 is provided at the action end of the driver, and the driver is used to drive the supporting portion 21 to move in a direction close to the transmission member 41 or in a direction away from the transmission member 41. It should be understood that the tensioning component 2 can be adjusted manually or automatically. When the tensioning component 2 is a bolt in the previous embodiment, it can be adjusted by a wrench. In the embodiment of the utility model, the tensioning component 2 includes a driver, and the tensioning component 2 can be driven to move by hydraulic pressure, pneumatic pressure or electricity.

[0042] For example, the driver is a pneumatic cylinder, a hydraulic cylinder, or an electric push rod, and the supporting portion 21 is located at the action end of the driver.

[0043] Furthermore, the detection component 3 may be built into the driver, so as to directly obtain the pressure value of the action end of the driver.

[0044] In some embodiments, the detection component 3 includes a pressure sensor 31, and the pressure sensor 31 is disposed between the tension component 2 and the transmission member 41. It should be understood that the pressure sensor 31 is disposed between the tension component 2 and the transmission member 41 to detect the pressure value of the top support portion 21 acting on the transmission member 41.

[0045] When the top support part 21 is in contact with the movable rail 42 , the pressure sensor 31 can be disposed between the top support part 21 and the movable rail 42 ; when the top support part 21 is in contact with the pad, the pressure sensor 31 is disposed between the top support part 21 and the pad.

[0046] Furthermore, the detection component 3 also includes a display instrument 32, which is connected to the pressure sensor 31. The display instrument 32 can display the pressure value of the top support part 21 acting on the transmission part 41, which is convenient for adjusting the tensioning component 2 during the timing assembly operation.

[0047] Furthermore, the detection component 3 also includes a power adapter 33 , which has a plug. The power adapter 33 is connected to the display instrument 32 , and the display instrument 32 is connected to the socket via the power adapter 33 and the plug, so as to supply power to the display instrument 32 .

[0048] Optionally, the display instrument 32 may be equipped with an energy storage component and powered by the energy storage component, for example, a dry cell or a storage battery.

[0049] When assembling the timing, the chain or belt needs to be tensioned. First, the supporting part 21 of the tensioning component 2 is driven to support the transmission member, so that the transmission member 41 of the timing system is gradually tensioned, and the pressure value applied by the tensioning component 2 to the transmission member 41 is read through the pressure sensor 31 of the detection component 3 until the tensioning force reaches the preset requirement. For example, the preset pressure size is 350N~380N. When the value of the pressure sensor 31 reaches 350N, 352N, 359N, 364N, 371N, 375N or 380N, the chain or belt can reach and maintain a stable tension level, which is convenient for timing assembly and ensures the accuracy of timing assembly, thereby improving engine performance and reducing fuel consumption and pollutant emissions.

[0050] In some embodiments, the detection component 3 is a tension detector, which is used to directly detect the tension of the transmission member 41. Generally, when the transmission member 41 is a belt, the tension detector is used to directly detect the tension of the belt.

[0051] In some embodiments, the timing assembly device further comprises a first plate body, one end of the first plate body has a third connection portion, the third connection portion is used to be rotatably connected to the engine cylinder block, and the first plate body has a first abutting surface, the first abutting surface is used to abut against the transmission member 41. The supporting portion 21 abuts against a side of the other end of the first plate body away from the transmission member 41.

[0052] It should be understood that when the transmission member 41 is a chain, the movable rail 42 in the tensioner can achieve the same effect as the first plate body. Therefore, the first plate body may not be provided. When the relative positions of the tensioning component 2 and the movable rail 42 are not convenient for alignment, the first plate body may be added as a pad between the top support portion 21 and the transmission member 41. When the transmission member 41 is a belt, the effect achieved by the first plate body is the same as that of the pad in the above embodiment.

[0053] In order to improve stability, the first plate is rotatably connected to the engine cylinder body through the third connecting part, so that a constraint is formed between the first plate body and the engine cylinder body, and the swing direction of the first plate body matches the abutment direction of the top support part 21 and the transmission member 41.

[0054] The first abutting surface of the first plate is an arc surface, which extends along the length direction of the transmission member 41, so that the chain or belt bends smoothly, increases the force bearing area of ​​the top support part 21 applied to the transmission member 41, and improves the quantification accuracy of the tension of the transmission member 41.

[0055] In some embodiments, the body 1 has a seat portion 13 and a bracket portion 14, the seat portion 13 extends along a first direction, a plurality of first connecting portions 11 are arranged on the seat portion 13 at intervals along the first direction, the bracket portion extends along a second direction, the second connecting portion 12 is arranged on the bracket portion 14, and a preset angle is provided between the first direction and the second direction. It should be understood that the seat portion 13 of the body 1 is used to connect with the engine cylinder block, the first connecting portion 11 is arranged on the seat portion 13, and the first connecting portion 11 can be a connecting hole opened on the seat portion 13, for example, two connecting holes are opened on the seat portion 13, the two connecting holes correspond to the original connecting holes on the engine cylinder block, and are connected and fixed by a connecting member.

[0056] The seat body portion 13 extends along a first direction, which may be the arrangement direction of the original plurality of connection holes on the engine block. At this time, the seat body portion 13 is in an elongated strip shape, which may reduce its volume and weight, and may be connected to the plurality of connection holes on the engine block. The bracket portion extends along a second direction, which is also in an elongated strip shape. The first direction and the second direction have a preset angle, which may control the direction of the force applied by the top support portion 21 to the transmission member 41, so that the direction of the pressure applied to the transmission member 41 is roughly perpendicular to the tangent direction of the corresponding position, thereby improving the tensioning effect.

[0057] The bracket portion 14 is used to install the tensioning component 2. In order to improve the accuracy of quantifying the tension of the transmission member 41, the bracket portion 14 is provided to limit the moving direction of the supporting portion 21 of the tensioning component 2 relative to the main body 1. For example, when the supporting portion 21 is supported against the moving rail 42 of the timing system, the direction of the pressure applied by the supporting portion 21 to the moving rail 42 is approximately perpendicular to the moving rail 42.

[0058] In some embodiments, a first groove 131 is provided on the seat body 13. It should be noted that, since the original connection hole position on the engine block is not designed for the first connection portion 11 of the body 1, when the body 1 is arranged on the engine block, some sections on the seat body 13 will interfere with the original structure on the engine block or interfere with some components of the timing system. Therefore, by opening the first groove 131 at the interfering position on the seat body 13, other components are avoided.

[0059] For example, the two original connection holes on the engine block are respectively located on both sides of a chain of the timing system. At this time, by opening the first groove 131 on the seat body 13, the seat body 13 can be arranged above the chain without interfering with the chain.

[0060] When the chain tensioning assembly is performed, after the chain tensioning assembly is completed by the timing assembly device, the movable rail 42 is supported by the timing tensioner 5, and the timing assembly device is removed. When the engine is working, the timing tensioner 5 controls the tension of the chain.

[0061] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0062] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0063] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0064] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0065] In the present utility model, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0066] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A timing assembly device, characterized in that: include: A body, the body having a first connection portion and a second connection portion, the first connection portion being used to connect to an engine cylinder block; A tensioning component, the tensioning component is connected to the second connecting portion, the tensioning component has a supporting portion, the supporting portion is used to abut against a transmission member in the timing system, and the supporting portion can move in a direction close to or away from the transmission member; A detection component is connected to the tensioning component to detect the pressure of the tensioning component on the transmission member, or the detection component is used to be connected to the transmission member to detect the tension of the transmission member after the tensioning component abuts against the transmission member.

2. The timing assembly device according to claim 1, characterized in that: The supporting portion moves along a straight line relative to the main body.

3. The timing assembly device according to claim 2, characterized in that: The second connecting portion is a screw hole, the tensioning component has an external thread section, the external thread section is connected to the screw hole, and the supporting portion is movable along the axial direction of the screw hole.

4. The timing assembly device according to claim 2, characterized in that: The tensioning component includes a driver connected to the second connecting portion. The supporting portion is arranged at an action end of the driver, and the driver is used to drive the supporting portion to move toward a direction close to the transmission member or to move away from the transmission member.

5. The timing assembly device according to claim 1, characterized in that: The detection component comprises a pressure sensor, and the pressure sensor is arranged between the tensioning component and the transmission member.

6. The timing assembly device according to claim 5, characterized in that: The detection component also includes a display instrument, and the display instrument is connected to the pressure sensor.

7. The timing assembly device according to claim 1, characterized in that: The detection component is a tension detector.

8. The timing assembly device according to any one of claims 1 to 7, characterized in that: It also includes a first plate body, one end of which has a third connection portion, the third connection portion is used to be rotatably connected to the engine cylinder body, and the first plate body has a first abutting surface, the first abutting surface is used to abut against the transmission member; The supporting portion abuts against a side of the other end of the first plate body away from the transmission member.

9. The timing assembly device according to any one of claims 1 to 7, characterized in that: The main body comprises a seat portion and a bracket portion, the seat portion extends along a first direction, a plurality of first connecting portions are arranged on the seat portion at intervals along the first direction, the bracket portion extends along a second direction, the second connecting portion is arranged on the bracket portion, and a preset angle is formed between the first direction and the second direction.

10. The timing assembly device according to claim 9, characterized in that: The seat body is provided with a first groove.

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