Auxiliary fixing device for engine maintenance timing chain

Abstract

The utility model provides an engine maintenance timing chain auxiliary fixer, and relates to the technical field of engine maintenance tools, the engine maintenance timing chain auxiliary fixer comprises a sector gear and a connecting rod arranged on the sector gear, the connecting rod is arranged on one side of the sector gear without teeth, and one end of the connecting rod far away from the sector gear is provided with a fixing hole. According to the timing chain auxiliary fixator for engine maintenance, during maintenance, the sector gear abuts against and is meshed between the timing chains from top to bottom, then the sector gear is locked and fixed, in the maintenance process, even if a crankshaft gear on the upper portion is detached, downward hanging of the timing chains is only limited to the upper portion of the sector gear, and the sector gear is not prone to falling off. The shape of the timing chain located below the sector gear and meshed with the outer portion of the crankshaft gear is kept unchanged. The problem that the timing chain is nowhere to be placed in the maintenance process is solved, and the timing chain is prevented from being polluted. And during reinstallation, only the two cam shaft gears need to be meshed again, and convenience is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of engine repair tooling, in particular to an auxiliary fixer for an engine repair timing chain. Background Art

[0002] Currently, when repairing the camshaft, air and oil supply system, ignition device or cylinder of an automobile engine, it is necessary to first remove the top camshaft of the engine, because the timing chain relies on the meshing support of the camshaft gears and crankshaft gears at the ends of the two camshafts.

[0003] During the current maintenance process, when the camshaft and camshaft gear are removed, the timing chain loses its support and falls. The falling chain not only affects the cleanliness of the chain, but also makes re-engagement more troublesome during the subsequent reinstallation process due to the irregular installation shape of the chain, increasing the labor intensity of maintenance. Utility Model Content

[0004] (1) Technical problems solved

[0005] In view of the deficiencies in the prior art, the present invention provides an auxiliary fixer for an engine maintenance timing chain, which solves the problems raised in the above-mentioned background technology.

[0006] (2) Technical solution

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: an engine maintenance timing chain auxiliary fixer, including a sector gear and a connecting rod arranged on the sector gear, the connecting rod is arranged on the side without teeth on the sector gear, and a fixing hole is opened on the end of the connecting rod away from the sector gear.

[0008] Preferably, the circumferential distribution angle of the teeth of the sector gear is between 90° and 360°.

[0009] Preferably, the circumferential distribution angle of the teeth of the sector gear is 180°.

[0010] Preferably, the shape of the fixing hole is one of circular, square and rectangular.

[0011] Preferably, the length of the connecting rod is adjustable.

[0012] (3) Beneficial effects

[0013] The utility model provides an auxiliary fixer for the timing chain of an engine maintenance, which has the following beneficial effects:

[0014] 1. This engine repair timing chain auxiliary retainer allows the fan gear to be pushed down from top to bottom, meshed between the timing chain, and then locked securely. Even if the upper crankshaft gear is removed during repair, the timing chain remains attached only to the portion above the fan gear. The portion below the fan gear and meshed with the outer portion of the crankshaft gear remains unchanged. This solves the problem of having nowhere to place the timing chain during repairs and prevents timing chain contamination. Reinstallation also requires only re-engaging the two camshaft gears, making it very convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a planar schematic diagram of the utility model;

[0016] Figure 2 This is a schematic diagram of the use state of the utility model.

[0017] In the figure: 1 sector gear, 2 connecting rod, 3 fixing hole, 4 bolt, 5 engine carrier, 6 screw hole, 7 crankshaft gear, 8 camshaft gear, 9 timing chain. DETAILED DESCRIPTION

[0018] The present invention provides an auxiliary fixing device for timing chain of engine maintenance. Figure 1-2 As shown, it includes a sector gear 1 and a connecting rod 2 arranged on the sector gear 1. The connecting rod 2 is arranged on the side of the sector gear 1 without teeth, and a fixing hole 3 is opened on the end of the connecting rod 2 away from the sector gear 1.

[0019] The sector gear 1 needs to engage the timing chains 9 on both sides, and the circumferential angle of its teeth is determined by its diameter and the distance between it and the timing chain 9, and is not specifically limited. The circumferential distribution angle of the teeth of the sector gear 1 can be between 90° and 360°.

[0020] In this embodiment, as a preferred solution, the circumferential distribution angle of the teeth of the sector gear 1 is 180°.

[0021] The fixing hole 3 can be round, square, or rectangular. It should be as large as possible so that the cover fixing screw hole 6 fits within the fixing hole 3. During connection, a washer is required on the bolt 4 passing through the fixing hole 3. The bolt 4 is secured to the cover fixing screw hole 6 on the engine carrier 5. The cover fixing screw hole 6 is the screw hole on the engine used to secure the cover.

[0022] To increase its versatility, the length of connecting rod 2 is adjustable. Specifically, connecting rod 2 can be divided into connecting rod 1 and connecting rod 2. Connecting rod 1 has a slideway along its length, and the rod body of connecting rod 2 slides into the slideway. A locking hole connected to the slideway is provided on the outside of connecting rod 1. The locking hole is threaded with a bolt for securing connecting rod 2. Connecting rod 2 can also be replaced with other components that can achieve telescopic functions, and the specific details are not limited.

[0023] Working principle: Figure 2 As shown, taking the engine EA888 as an example, after the side cover of the engine is removed, the sector gear 1 is pushed down tightly to engage between the timing chains 9, and then the bolt 4 with a gasket is passed through the fixing hole 3 and connected to the cover fixing screw hole 6 of the engine carrier 5 to fix the shape of the sector gear 1. Due to the limiting component outside the timing chain 9, when the sector gear 1 is engaged with the narrow part of the timing chain 9, even after the upper crankshaft gear 7 is removed, the lowering of the timing chain 9 is only limited to the upper part of the sector gear 1, and the shape of the timing chain 9 located below the sector gear 1 and engaged with the outer part of the crankshaft gear 7 remains unchanged.

[0024] The problem of having nowhere to put the timing chain 9 during maintenance is solved, and contamination of the timing chain 9 is avoided. Moreover, when reinstalling, only the two camshaft gears 8 need to be re-engaged, which is very convenient.

[0025] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An auxiliary timing chain fixer for engine maintenance, characterized by: The invention comprises a sector gear (1) and a connecting rod (2) arranged on the sector gear (1), wherein the connecting rod (2) is arranged on a side of the sector gear (1) without teeth, and a fixing hole (3) is provided on an end of the connecting rod (2) away from the sector gear (1); the circumferential distribution angle of the teeth of the sector gear (1) is between 90° and 360°; the shape of the fixing hole (3) is one of a circle and a rectangle; and the length of the connecting rod (2) is adjustable.

2. The auxiliary fixer for engine maintenance timing chain according to claim 1, characterized in that: The circumferential distribution angle of the teeth of the sector gear (1) is 180°.

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