Hybrid engine crankshaft flywheel stopping tool

Abstract

The utility model discloses a hybrid engine crankshaft flywheel stopping tool which comprises a stopping rod and a handle connected with the stopping rod, and the stopping rod is arranged to penetrate through an avoiding hole in an engine cylinder body and then be inserted into a counter bore formed in a crankshaft so as to conduct circumferential limiting on the crankshaft. The stopping tool for the crankshaft flywheel of the hybrid engine is simple in structure, convenient to operate and beneficial to improving the dismounting and mounting efficiency of the crankshaft flywheel of the hybrid engine.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobiles, and specifically relates to a hybrid engine crankshaft flywheel stopping tool. Background Art

[0002] When disassembling an automobile engine, the bolts securing the damper pulley and flywheel are often difficult to remove. This is because loosening these bolts requires a significant amount of torque, and the crankshaft rotates when the bolts are loosened, making them impossible to remove. Conventional methods involve attaching a stopper to the flywheel, typically by engaging the flywheel's starting gear or securing the flywheel's pin hole. Another approach involves securing the engine's damper pulley.

[0003] Currently, hybrid vehicles use electric motors to start the engine, eliminating the starter motor found in traditional fuel vehicles. The flywheel also eliminates the starting gear. With the change in flywheel structure, the traditional fuel vehicle flywheel stop tooling is no longer suitable for hybrid engines.

[0004] The tooling for fixing the shock absorber pulley of the engine is not suitable for disassembling and assembling the shock absorber pulley bolts, and has a complex structure, which is time-consuming and labor-intensive to install.

[0005] Chinese patent application number 202011186880.8 discloses a flywheel stop fixture, which belongs to the field of automobile engine technology. The flywheel stop fixture includes an engine, a flywheel assembly and a stop mechanism. The flywheel assembly includes a flywheel housing and a flywheel, the flywheel housing is fixed to the outer surface of the engine, the stop mechanism includes a positioning seat and a stop assembly, the stop assembly includes a slider and an adjusting nut, the slider is slidably connected to the inside of the fixing plate, the limit plate is located on the lower surface of the fixing plate, the clamp is fixed to the bottom of the slider, the adjusting nut is screwed to the outer surface of the threaded column, and the adjusting nut is located on the upper surface of the fixing plate.

[0006] It is hoped to provide an improved hybrid engine crankshaft flywheel stop tool, particularly to improve the efficiency of disassembly and assembly of the hybrid engine crankshaft flywheel. Utility Model Content

[0007] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a hybrid engine crankshaft flywheel stop tooling, the purpose of which is to improve the efficiency of disassembly and assembly of the hybrid engine crankshaft flywheel.

[0008] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a hybrid engine crankshaft flywheel stopping tool, including a stopping rod and a handle connected to the stopping rod, and the stopping rod is configured to pass through the avoidance hole on the engine cylinder block and then be inserted into the countersunk hole set on the crankshaft to limit the crankshaft circumferentially.

[0009] The head of the stop rod is inserted into the countersunk hole on the crankshaft, and the head of the stop rod is a conical structure.

[0010] The stop rod comprises a smooth rod portion and a threaded rod portion connected to the smooth rod portion, and an external thread is arranged on the threaded rod portion.

[0011] The avoidance hole is a threaded hole.

[0012] The diameter of the threaded rod portion is greater than the diameter of the smooth rod portion.

[0013] The end of the threaded rod is vertically connected to the handle.

[0014] The hybrid engine crankshaft flywheel stopping tool of the utility model has a simple structure and is easy to operate, which helps to improve the disassembly and assembly efficiency of the hybrid engine crankshaft flywheel. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] This manual includes the following drawings, which show the following contents:

[0016] Figure 1 This is a structural diagram of a hybrid engine crankshaft flywheel stop tooling of the present utility model;

[0017] Figure 2 This is a cross-sectional view of the hybrid engine crankshaft flywheel stop tooling of the present invention in use;

[0018] Figure 3 This is an axonometric drawing of the hybrid engine crankshaft flywheel stop fixture of the present invention in use;

[0019] The following are marked in the figure: 1. crankshaft; 2. engine cylinder block; 3. hybrid engine crankshaft flywheel stop fixture; 101. head; 102. polished rod; 103. threaded rod; 104. handle. DETAILED DESCRIPTION

[0020] The following is a further detailed description of the specific implementation methods of the present invention by describing the embodiments with reference to the accompanying drawings, with the aim of helping those skilled in the art to have a more complete, accurate and in-depth understanding of the concept and technical solution of the present invention and to facilitate its implementation.

[0021] like Figures 1 to 3As shown, the utility model provides a hybrid engine crankshaft flywheel stopping tool, including a stopping rod and a handle 104 connected to the stopping rod. The stopping rod is configured to pass through the avoidance hole on the engine cylinder block 2 and then be inserted into the countersunk hole set on the crankshaft 1 to limit the crankshaft 1 circumferentially.

[0022] Specifically, hybrid vehicles use an electric motor to start the engine, eliminating the starter typically found in traditional fuel vehicles. Consequently, the flywheel also lacks the starter teeth, making it impossible to secure the flywheel by engaging the starter teeth. When disassembling and installing the engine's damper pulley bolts and flywheel bolts, the hybrid engine crankshaft-flywheel locking fixture provided by the present invention locks the crankshaft 1, preventing the crankshaft 1 and the flywheel connected thereto from rotating, thereby facilitating the loosening and tightening of the bolts.

[0023] like Figures 1 to 3 As shown, the hybrid engine crankshaft flywheel stop fixture utilizes a T-bar structure, primarily consisting of a stop rod and a handle 104. The stop rod's head 101, which has a tapered structure, is inserted into a countersunk hole in the crankshaft 1. The countersunk hole is located on the outer edge of the balance block of the crankshaft 1 and mates with the tapered head 101 on the hybrid engine crankshaft flywheel stop fixture.

[0024] like Figures 1 to 3 As shown, the stop rod includes a polished rod portion 102 and a threaded rod portion 103 connected to the polished rod portion 102 , wherein the threaded rod portion 103 is provided with external threads and the avoidance hole is a threaded hole.

[0025] like Figures 1 to 3 As shown, the avoidance hole provided on the engine cylinder block 2 and the counterbore of the crankshaft 1 must be coaxial; the avoidance hole provided on the engine cylinder block 2 cooperates with the threaded rod portion 103 of the hybrid engine crankshaft flywheel stop tooling.

[0026] like Figures 1 to 3 As shown, the smooth rod portion 102 and the threaded rod portion 103 are coaxially arranged, the end of the threaded rod portion 103 is vertically connected to the handle 104, and the axis of the threaded rod portion 103 is perpendicular to the axis of the handle 104, so manual tightening of the tooling is convenient and quick.

[0027] During use, the crankshaft 1 is rotated until the avoidance hole on the engine cylinder block 2 is aligned with the countersunk hole on the crankshaft 1 , and the hybrid engine crankshaft flywheel stopping fixture is inserted into the countersunk hole of the crankshaft 1 after passing through the avoidance hole of the engine cylinder block 2 to lock the crankshaft 1 .

[0028] An avoidance hole is provided on the engine cylinder block 2. When the crankshaft 1 does not need to be stopped, the avoidance hole is sealed with bolts and copper washers.

[0029] The above description of the present invention is provided as an example, in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described method. Any non-substantial improvements made using the method concepts and technical solutions of the present invention, or any application of the above-described concepts and technical solutions of the present invention to other situations without modification, are all within the scope of protection of the present invention.

Claims

1. Hybrid engine crankshaft flywheel stop tooling, characterized by: The utility model comprises a stop rod and a handle connected with the stop rod. The stop rod is arranged to pass through the avoidance hole on the engine cylinder body and then be inserted into the countersunk hole arranged on the crankshaft to limit the circumferential position of the crankshaft.

2. The hybrid engine crankshaft flywheel stop fixture according to claim 1, characterized in that: The head of the stop rod is inserted into the countersunk hole on the crankshaft, and the head of the stop rod is a conical structure.

3. The hybrid engine crankshaft flywheel stop fixture according to claim 2, characterized in that: The stop rod comprises a smooth rod portion and a threaded rod portion connected to the smooth rod portion, and an external thread is arranged on the threaded rod portion.

4. The hybrid engine crankshaft flywheel stop fixture according to claim 3, characterized in that: The avoidance hole is a threaded hole.

5. The hybrid engine crankshaft flywheel stop fixture according to claim 3, characterized in that: The diameter of the threaded rod portion is greater than the diameter of the smooth rod portion.

6. The hybrid engine crankshaft flywheel stop fixture according to claim 3, characterized in that: The end of the threaded rod is vertically connected to the handle.

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