A special tool for overhead camshaft disc turning

Abstract

The application provides a special tool for top camshaft disc turning, and belongs to the technical field of engines. The special tool for top camshaft disc turning comprises an adjusting assembly and a disc turning assembly. The adjusting assembly comprises a bottom plate, a mounting hole plate, an elastic member and a positioning gear. One end of the mounting hole plate is rotationally arranged in the bottom plate. The elastic member is arranged on the top of the bottom plate. The positioning gear is fixedly connected to the elastic member. The disc turning assembly comprises a support plate, a bearing seat and a disc turning piece. By arranging the bottom plate, the mounting hole plate, the elastic member and the positioning gear, the relative rotation of the mounting hole plate to the bottom plate can be conveniently adjusted, and then the position orientation of the mounting hole plate is adjusted, so that the mounting and fixing of the hole position on the cylinder head of an engine with different sizes are adapted, the application range is greatly improved, the adjustment is convenient and fast, and by arranging the support plate, the bearing seat and the disc turning piece, the engine flywheel can be engaged and rotated.

Description

Technical Field

[0001] This application relates to the field of engines, and more specifically, to a special tool for overhead camshaft disc engines. Background Technology

[0002] Engines use a valve train to control the engine's phasing angle. Traditional valve trains require adjusting the intake and exhaust valve clearances according to design requirements, which necessitates engine rotation. Therefore, during assembly, an engine turning mechanism is needed to drive the crankshaft, which in turn rotates the valve train to adjust valve clearances and check phasing.

[0003] Currently, both in the early stages of equipment installation and in the later stages of maintenance, turning tools are required for engine turning. However, most existing turning tools are fixed structures, which are mounted on the engine cylinder head. Fixed-structure turning tools are difficult to adapt to the installation and fixation of engine cylinder heads of different sizes, resulting in significant limitations. Summary of the Invention

[0004] To overcome the above shortcomings, this application provides a special tool for turning the overhead camshaft, which aims to improve the problem that most existing turning tools are fixed structures that are mounted on the engine cylinder head. Fixed turning tools are difficult to adapt to the installation and fixation of engine cylinder heads of different sizes, resulting in significant limitations.

[0005] This application provides a special tool for turning a top-mounted camshaft, including an adjustment assembly and a turning assembly.

[0006] The adjustment assembly includes a base plate, a mounting hole plate, an elastic element, and a positioning gear. One end of the mounting hole plate is rotatably disposed inside the base plate. The elastic element is disposed on the top of the base plate. The positioning gear is fixedly connected to the elastic element and is slidably engaged with the base plate and the mounting hole plate.

[0007] The turning gear assembly includes a support plate, a bearing seat, and a turning gear component. The support plate is fixedly connected to the base plate, the bearing seat is fixedly connected to the support plate, and the turning gear component rotates through the bearing seat.

[0008] In one specific implementation, the mounting plate has a first toothed groove, the base plate has a second toothed groove, and the positioning gear is slidably disposed in the first toothed groove and the second toothed groove.

[0009] In the above implementation process, by setting a first tooth groove and a second tooth groove, when the positioning gear is pressed into the first tooth groove, the positioning gear disengages from the second tooth groove, and the mounting plate can rotate relative to the base plate. When the positioning gear partially enters the second tooth groove, it restricts the relative rotation of the base plate and the mounting plate.

[0010] In one specific implementation, the elastic element includes a pressure rod and a spring, the pressure rod slidingly passing through the second tooth groove and the base plate, the spring being sleeved on the pressure rod, and the positioning gear being fixedly connected to the pressure rod.

[0011] In the above implementation process, by setting up a pressure rod and a spring, the spring's elastic recovery action is used to push the pressure rod, which in turn drives the positioning gear to move, so that the positioning gear is in the first and second tooth grooves.

[0012] In one specific implementation, the mounting plate is fixedly connected to a rotating shaft, which rotates through the bottom of the base plate.

[0013] In the above implementation process, a rotating shaft is set to support the rotational connection between the mounting plate and the base plate.

[0014] In one specific implementation, the mounting plate has an elongated hole, and a bolt passes through the elongated hole.

[0015] In the above implementation process, by opening elongated holes, bolts can be installed by passing through them, and their positions can be adjusted by moving along the elongated holes.

[0016] In one specific implementation, the support plate includes a main support and a side support, the main support and the side support are perpendicular to each other, and the main support has reinforcing holes.

[0017] In the above implementation process, main supports and side supports are set up to stabilize and support the turning gear components.

[0018] In one specific implementation, the turning gear includes a rotor shaft and a turning gear, the rotor shaft rotatably passing through the bearing housing, and the turning gear being sleeved on the rotor shaft.

[0019] In one specific implementation, the end of the rotor shaft away from the turning gear has a hexagonal head.

[0020] In the above process, the hexagonal rotor shaft is easy to rotate with a hex wrench, and the bearings in the bearing housing support the rotor shaft to stably drive the turning gear to rotate.

[0021] The advantages of this application embodiment are: by setting a base plate, mounting hole plate, elastic element and positioning gear, the mounting hole plate can be easily adjusted to rotate relative to the base plate, thereby adjusting the position and orientation of the mounting hole plate to adapt to the hole positions on engine cylinder heads of different sizes for installation and fixation, which greatly improves the applicability range and makes adjustment convenient and quick. By setting a support plate, bearing seat and turning component, the engine flywheel can be engaged to rotate. Attached Figure Description

[0022] Figure 1This is a schematic diagram of the special tool structure for overhead camshaft turning machines provided in the embodiments of this application;

[0023] Figure 2 A schematic diagram of the second tooth groove structure provided for an embodiment of this application;

[0024] Figure 3 A schematic diagram of the elastic element structure provided for an embodiment of this application;

[0025] Figure 4 A schematic diagram of the mounting plate structure provided for an embodiment of this application;

[0026] Figure 5 A schematic diagram of the turning gear assembly structure provided for an embodiment of this application.

[0027] In the diagram: 100-Adjusting component; 110-Base plate; 111-Second tooth groove; 120-Mounting hole plate; 121-First tooth groove; 122-Rotating shaft; 123-Elongated hole; 130-Elastic element; 131-Pressure rod; 132-Spring; 140-Positioning gear; 200-Turning assembly; 210-Support plate; 211-Main support; 212-Side support; 220-Bearing seat; 230-Turning component; 231-Rotor shaft; 232-Turning gear. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with embodiments.

[0029] It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit this application.

[0030] In the embodiments, unless otherwise specified, all methods used are conventional methods in the art.

[0031] Please see Figures 1-5 This application provides a special tool for turning a top camshaft, including an adjustment assembly 100 and a turning assembly 200.

[0032] Please see Figure 1 , 2 3 and 4, the adjustment assembly 100 includes a base plate 110, a mounting hole plate 120, an elastic element 130 and a positioning gear 140. One end of the mounting hole plate 120 is rotatably disposed inside the base plate 110. The elastic element 130 is disposed on the top of the base plate 110. The positioning gear 140 is fixedly connected to the elastic element 130 and is slidably engaged with the base plate 110 and the mounting hole plate 120.

[0033] The mounting plate 120 has a first toothed groove 121, and the base plate 110 has a second toothed groove 111. The positioning gear 140 is slidably disposed in the first toothed groove 121 and the second toothed groove 111. By setting the first toothed groove 121 and the second toothed groove 111, when the positioning gear 140 is pressed into the first toothed groove 121, the positioning gear 140 disengages from the second toothed groove 111, and the mounting plate 120 can rotate relative to the base plate 110. When the positioning gear 140 partially enters the second toothed groove 111, it restricts the relative rotation of the base plate 110 and the mounting plate 120.

[0034] In this embodiment, the elastic element 130 includes a pressure rod 131 and a spring 132. The pressure rod 131 slides through the second tooth groove 111 and the base plate 110. The spring 132 is sleeved on the pressure rod 131. The positioning gear 140 is fixedly connected to the pressure rod 131. By setting the pressure rod 131 and the spring 132, the spring 132 pushes the pressure rod 131 with its elastic recovery action. The pressure rod 131 drives the positioning gear 140 to move, so that the positioning gear 140 is in the first tooth groove 121 and the second tooth groove 111.

[0035] Specifically, the mounting plate 120 is fixedly connected to a rotating shaft 122, which rotates through the bottom of the base plate 110. The rotating shaft 122 is used to support the rotating connection between the mounting plate 120 and the base plate 110.

[0036] It should be noted that the mounting plate 120 has an elongated hole 123, and a bolt passes through the elongated hole 123. By opening the elongated hole 123, the bolt can be installed by passing through the bolt, and the position can be adjusted by moving along the elongated hole 123.

[0037] Please see Figure 1 and 5 The turning gear assembly 200 includes a support plate 210, a bearing seat 220, and a turning gear component 230. The support plate 210 is fixedly connected to the base plate 110, and the bearing seat 220 is fixedly connected to the support plate 210. The turning gear component 230 rotates through the bearing seat 220.

[0038] The support plate 210 includes a main support 211 and a side support 212. The main support 211 and the side support 212 are perpendicular to each other, and the main support 211 has a reinforcing hole. The main support 211 and the side support 212 are used to stabilize and support the turning gear 230.

[0039] In this embodiment, the turning component 230 includes a rotor shaft 231 and a turning gear 232. The rotor shaft 231 rotates through the bearing housing 220, and the turning gear 232 is sleeved on the rotor shaft 231. The end of the rotor shaft 231 away from the turning gear 232 has a hexagonal head. The hexagonal head of the rotor shaft 231 makes it easy to rotate with a hex wrench. The bearing in the bearing housing 220 supports the rotor shaft 231 and stably drives the turning gear 232 to rotate.

[0040] The working principle of this overhead camshaft turning tool is as follows: When in use, pressing the pressure rod 131 compresses the spring 132, causing the pressure rod 131 to move the positioning gear 140. The positioning gear 140 then fully enters the first tooth groove 121 from the second tooth groove 111, allowing the mounting plate 120 to be rotated relative to the base plate 110 to adjust its position. After adjustment, releasing and pulling the pressure rod 131 causes the spring 132 to restore its elasticity, causing the pressure rod 131 to move the positioning gear 140. The positioning gear 140 then enters the second tooth groove 111 from the first tooth groove 121, thus restricting the relative rotation of the base plate 110 and the mounting plate 120. Combined with the elongated hole 123 on the mounting plate 120, the bolt installation position can be adjusted to a large extent, adapting to the hole positions on engine cylinder heads of different sizes for installation and fixation. This convenient and quick adjustment improves practicality.

[0041] It will be apparent to those skilled in the art that this application is not limited to the details of the exemplary embodiments described above, and that this application can be implemented in other specific forms without departing from the spirit or essential characteristics of this application. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this application is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this application. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A special tool for turning a top-mounted camshaft, characterized in that, include An adjustment assembly (100) includes a base plate (110), a mounting hole plate (120), an elastic element (130), and a positioning gear (140). One end of the mounting hole plate (120) is rotatably disposed within the base plate (110). The elastic element (130) is disposed on the top of the base plate (110). The positioning gear (140) is fixedly connected to the elastic element (130) and is slidably engaged with the base plate (110) and the mounting hole plate (120). A turning gear assembly (200) includes a support plate (210), a bearing seat (220), and a turning gear component (230). The support plate (210) is fixedly connected to the base plate (110), the bearing seat (220) is fixedly connected to the support plate (210), and the turning gear component (230) rotates through the bearing seat (220).

2. The special tool for turning a top-mounted camshaft according to claim 1, characterized in that, The mounting plate (120) has a first toothed groove (121), the base plate (110) has a second toothed groove (111), and the positioning gear (140) is slidably disposed in the first toothed groove (121) and the second toothed groove (111).

3. A special tool for turning a top-mounted camshaft according to claim 2, characterized in that, The elastic element (130) includes a pressure rod (131) and a spring (132). The pressure rod (131) slides through the second tooth groove (111) and the base plate (110). The spring (132) is sleeved on the pressure rod (131). The positioning gear (140) is fixedly connected to the pressure rod (131).

4. A special tool for turning a top-mounted camshaft according to claim 1, characterized in that, The mounting plate (120) is fixedly connected to a rotating shaft (122), which rotates through the bottom of the base plate (110).

5. A special tool for turning a top-mounted camshaft according to claim 1, characterized in that, The mounting plate (120) has an elongated hole (123), and a bolt passes through the elongated hole (123).

6. A special tool for turning a top-mounted camshaft according to claim 1, characterized in that, The support plate (210) includes a main support (211) and a side support (212), the main support (211) and the side support (212) are perpendicular to each other, and the main support (211) has a reinforcing hole.

7. A special tool for turning a top-mounted camshaft according to claim 1, characterized in that, The turning component (230) includes a rotor shaft (231) and a turning gear (232). The rotor shaft (231) rotates through the bearing housing (220), and the turning gear (232) is sleeved on the rotor shaft (231).

8. A special tool for turning a top-mounted camshaft according to claim 7, characterized in that, The rotor shaft (231) has a hexagonal head at the end away from the turning gear (232).

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