Engine balance shaft dismounting puller tool

Abstract

The utility model provides an engine balance shaft dismounting puller tool, which relates to the field of engine maintenance auxiliary tools, and comprises a sleeve and a stress plate, the top of the sleeve is provided with a semicircular opening, the stress plate is arranged at the top of the sleeve, the stress plate is provided with a U-shaped opening at one side of the semicircular opening, and the U-shaped opening is arranged at the other side of the semicircular opening. A pull ring is arranged at the bottom of the sleeve, the inner diameter of the stress face of the bottom of the stress plate is larger than the outer diameter of a shaft body of the balance shaft and smaller than the outer diameter of the gear, and the inner diameter of the sleeve is larger than the outer diameter of the gear. When the puller tool for disassembling the balance shaft of the engine is used, a user only needs to insert the U-shaped opening in the stress plate into a gap between a balance shaft gear and an engine shell, then the balance shaft can be pulled out of the engine under repeated pulling of a puller, and the sleeving and pulling modes are very convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of engine maintenance auxiliary tools, in particular to a pulling tool for disassembling an engine balance shaft. Background Art

[0002] The balance shaft technology is a widely used technology in automobile engines. Its structure is simple and practical, and it can effectively reduce the vibration of the whole vehicle and improve driving comfort. For example, the balance shaft of China Patent Publication No. CN214999110U.

[0003] Balance shafts are widely used in current engines, such as the EA888 engines of Volkswagen, Audi, and Porsche. The shaft body of the balance shaft is installed inside the engine housing, with only the gear at the end of the balance shaft exposed. Since the shaft body and the engine housing are interference fit through bearings, when repairing the balance shaft, the interference fit balance shaft needs to be pulled out with the help of a puller. However, the current pulling tool uses a combination of two semicircular sleeves, the gear is sleeved in the sleeve, and then the sleeve is pulled. However, the connection between the two sleeves needs to be connected by bolts, etc., which is cumbersome to install. In addition, since they are all semicircular sleeves, the overall strength is not high. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the utility model provides a puller tool for disassembling a balance shaft of an engine, which solves the problems raised in the above-mentioned background technology.

[0006] (II) Technical solution

[0007] To achieve the above objectives, the utility model is implemented through the following technical solutions: an engine balance shaft disassembly puller tool, including a sleeve and a force plate, the top of the sleeve is provided with a semicircular opening, the force plate is arranged on the top of the sleeve, a U-shaped opening is provided on one side of the semicircular opening on the force plate, a pull ring is provided at the bottom of the sleeve, the inner diameter of the force surface at the bottom of the force plate is larger than the outer diameter of the balance shaft body and smaller than the outer diameter of the gear, and the inner diameter of the sleeve is larger than the outer diameter of the gear.

[0008] Preferably, both ends of the U-shaped opening extend vertically outward at the junction of the semicircular opening.

[0009] Preferably, the load-bearing plate and the sleeve are integrally formed.

[0010] Preferably, the angle of the semicircular opening is between 120-180°.

[0011] (III) Beneficial effects

[0012] The utility model provides a puller tool for disassembling an engine balance shaft, which has the following beneficial effects:

[0013] 1. When using the engine balance shaft disassembly puller tool, you only need to insert the U-shaped opening on the force plate into the gap between the balance shaft gear and the engine case, and then pull the balance shaft out of the engine under repeated pulling of the puller. The assembly and pulling method is very convenient.

[0014] 2. The engine balance shaft disassembly puller tool has a larger overall strength of the sleeve because the sleeve is an integral part and the force-bearing area of ​​the force-bearing plate is larger than that of the semicircular sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is an axonometric drawing of the utility model;

[0016] Figure 2 It is a schematic diagram of the force-bearing surface of the utility model.

[0017] In the figure: 1 sleeve, 2 semicircular opening, 3 force plate, 4 U-shaped opening, 5 force surface, 6 pull ring. DETAILED DESCRIPTION

[0018] The utility model provides a puller tool for disassembling an engine balance shaft, such as Figure 1-2 As shown, it includes a sleeve 1 and a force plate 3. A semicircular opening 2 is provided on the top of the sleeve 1. The angle of the semicircular opening 2 is between 120 and 180 degrees. The semicircular opening 2 is used to accommodate the gear at the end of the balance shaft. The axial length of the semicircular opening 2 is greater than the thickness of the gear. When the semicircular opening 2 is less than 180 degrees, the semicircular opening 2 can form an inwardly enclosing shape to prevent the gear of the balance shaft from slipping out.

[0019] like Figure 2 As shown, the force plate 3 is arranged on the top of the sleeve 1, and a U-shaped opening 4 is provided on the force plate 3 on one side of the semicircular opening 2. The thickness of the U-shaped opening 4 is smaller than the gap between the balance shaft gear and the engine housing, and the U-shaped opening 4 is used to fork on the balance shaft. The two ends of the U-shaped opening 4 extend vertically outward at the junction of the semicircular opening 2, so that it is easy to be sleeved on the balance shaft, and it can also prevent the sleeve 1 from slipping off the balance shaft. The inner diameter of the force surface 5 at the bottom of the force plate 3 is larger than the outer diameter of the balance shaft body, and smaller than the outer diameter of the gear, and the inner diameter of the sleeve 1 is larger than the outer diameter of the gear.

[0020] A pull ring 6 is provided at the bottom of the sleeve 1, and the pull ring 6 is used for connecting with the tensioner hook.

[0021] When the force plate 3 is inserted into the gap between the balance shaft gear and the engine housing, the sleeve 1 is pulled by the tensioner, the force surface 5 acts on the gear, and then the balance shaft is pulled out of the engine under the repeated pulling of the tensioner.

[0022] In order to increase the overall stress strength, the stress plate 3 is integrally formed with the sleeve 1. The semicircular opening 2 and the U-shaped opening 4 are formed by cutting or the like.

[0023] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An engine balance shaft disassembly puller tool, characterized in that: The invention comprises a sleeve (1) and a force-bearing plate (3), wherein a semicircular opening (2) is provided on the top of the sleeve (1), the force-bearing plate (3) is arranged on the top of the sleeve (1), a U-shaped opening (4) is provided on the force-bearing plate (3) on one side of the semicircular opening (2), a pull ring (6) is provided on the bottom of the sleeve (1), the inner diameter of the force-bearing surface (5) at the bottom of the force-bearing plate (3) is larger than the outer diameter of the balancing shaft body and smaller than the outer diameter of the gear, and the inner diameter of the sleeve (1) is larger than the outer diameter of the gear.

2. The engine balance shaft disassembly puller tool according to claim 1, characterized in that: Both ends of the U-shaped opening (4) extend vertically outwards at the junction of the semicircular opening (2).

3. The engine balance shaft disassembly puller tool according to claim 1, characterized in that: The force-bearing plate (3) and the sleeve (1) are integrally formed.

4. The engine balance shaft disassembly puller tool according to claim 1, characterized in that: The angle of the semicircular opening (2) is between 120° and 180°.

Images