A locking tool suitable for a TVD wheel of a range extender

Abstract

The utility model provides a locking tool suitable for the TVD wheel of range extender belongs to the engine assembly tool technical field, both ends of main body board are equipped with the cylinder, all are equipped with the mounting hole on every cylinder, every mounting hole is used to wear the bolt to fix the tool, be equipped with two groups of locking column on main body board, two groups of locking column are located between two cylinders and symmetrically set up, every group of locking column includes two locking columns, and the two locking columns of same group are used to explore into the same aperture of TVD wheel together to limit its rotation. The utility model discloses through the ingenious structure design, can not only efficiently solve the practical problem in the engine dismounting maintenance, also has low cost, stable and safe operation and so on advantage, can effectively satisfy the various demands of range extender TVD wheel locking related, has strong practicality and popularization value.

Description

Technical Field

[0001] This utility model belongs to the field of engine assembly tool technology, specifically a locking tool suitable for the TVD wheel of a range extender. Background Technology

[0002] During engine disassembly, assembly, and maintenance, components such as the TVD wheel mounted on the crankshaft need to be assembled, adjusted, inspected, or removed, and this process must ensure that the crankshaft does not rotate. Traditionally, the crankshaft is locked using the starting gear of the flywheel disc. However, with technological advancements, some engines have eliminated the starting gear of the flywheel disc, resulting in the crankshaft losing its effective locking mechanism. In this situation, the TVD wheel is difficult to securely fix due to the crankshaft's tendency to rotate, making disassembly and assembly difficult, increasing workload, and affecting work efficiency. Therefore, a tooling solution that locks the TVD wheel to solve these problems is urgently needed. Summary of the Invention

[0003] To address the problems existing in the background technology, this utility model provides a locking fixture suitable for the TVD wheel of a range extender.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a locking fixture for a range extender TVD wheel, comprising a main body plate, two columns, two mounting holes and two sets of locking columns; The main body plate has columns at both ends, and each column has a mounting hole for inserting bolts to fix the tooling. The main body plate has two sets of locking columns, which are located between the two columns and are symmetrically arranged. Each set of locking columns includes two locking columns, which are used to jointly insert into the same hole of the TVD wheel to restrict its rotation.

[0005] The shape and size of each locking pin are adapted to the gap of the TVD wheel to ensure a stable locking effect.

[0006] The diameter of each mounting hole is matched to the bolt used for fixing, ensuring that the bolt can be easily inserted and tightened.

[0007] Compared with the prior art, the beneficial effects of this utility model are: 1. Targeted solution to disassembly and assembly difficulties: This device uses two sets of locking pins (two in each set) to lock the TVD wheel, effectively restricting the rotation of the TVD wheel and crankshaft. It specifically solves the problem of crankshaft fixation during engine disassembly and maintenance caused by the removal of the flywheel starter gear, making the removal or assembly of screws on the crankshaft more convenient, greatly reducing workload and improving work efficiency.

[0008] 2. Ingenious and practical structural design: The whole is composed of a main plate, column, mounting holes and locking pins. The layout of each component is reasonable. Two sets of locking pins are symmetrically set. The locking pins in the same set are adapted to the gap of the TVD wheel. The mounting holes are matched with the fixing bolts. Reliable locking can be achieved through a simple mechanical structure. The design is simple and highly targeted, and can stably meet the needs of engine maintenance, assembly and disassembly scenarios.

[0009] 3. Low manufacturing cost: The tooling structure is simple, the required parts are few, the processing technology is not complicated, and no complex technology or expensive materials are required, which helps to reduce manufacturing costs and facilitates mass production and application.

[0010] 4. Stable and safe operation: The locking pin and the TVD wheel hole fit together tightly, and the mounting hole and bolt are firmly engaged, ensuring that the tooling is not easily displaced during operation. It can continuously and effectively restrict the rotation of the TVD wheel, providing stable operating conditions for operators, avoiding operational inconvenience and safety hazards caused by accidental rotation of the TVD wheel, and improving operational safety.

[0011] In summary, this utility model, through its ingenious structural design, can not only efficiently solve practical problems in engine disassembly and repair, but also has advantages such as low cost, stable and safe operation. It can effectively meet various requirements related to the TVD wheel lock of the range extender, and has strong practicality and promotional value. Attached Figure Description

[0012] Figure 1 This is a front view of the present invention; Figure 2 This is a top view of the present invention; Figure 3 This is a schematic diagram showing the connection relationship between the locking pin and the TVD wheel of this utility model; Figure 4 This is a schematic diagram showing the connection relationship between the column and the engine cover of this utility model. Detailed Implementation

[0013] The technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of the utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the protection scope of this utility model.

[0014] This embodiment describes a locking fixture suitable for the TVD wheel of a range extender, including a main plate 1, two pillars 2, two mounting holes 3 and two sets of locking pins 4; The main body plate 1 has columns 2 at both ends, and each column 2 has a mounting hole 3. Each mounting hole 3 is used to pass a bolt to fix the tooling. The main body plate 1 has two sets of locking pins 4. The two sets of locking pins 4 are located between the two columns 2 and are symmetrically arranged. Each set of locking pins 4 includes two locking pins 4. The two locking pins 4 in the same set are used to jointly insert into the same hole of the TVD wheel to restrict its rotation.

[0015] The shape and size of each locking pin 4 are adapted to the gap of the TVD wheel to ensure a stable locking effect.

[0016] The diameter of each of the mounting holes 3 is matched with the bolt used for fixing, ensuring that the bolt can be smoothly inserted and tightened.

[0017] When actually operating the locking fixture for the TVD wheel of the range extender, firstly, the mounting holes 3 on the two end posts 2 of the main body plate 1 must be precisely aligned with the corresponding fixing points on the engine cover. Then, the appropriate bolts are inserted, and by tightening the bolts, the fastening force generated by the tight fit between the mounting holes 3 and the bolts is used to firmly fix the entire fixture in the preset fixing position on the engine cover. This step ensures the stability of the fixture during subsequent operations and provides a reliable foundation for the locking function. Next, the two sets of locking posts 4 on the main body plate 1 are aligned with the holes on the TVD wheel. The two locking posts 4 in each set are specially designed with a shape and size that fits tightly to the holes of the TVD wheel. Therefore, during operation, the two locking posts 4 in the same set can be smoothly inserted into the same hole of the TVD wheel. When the locking pin 4 is in contact with the inner wall of the orifice, a large frictional force is generated. At the same time, due to the rigid structure of the locking pin itself, if the TVD wheel attempts to rotate around its axis of rotation, it will be blocked by the locking pin. The locking pin transmits the force generated by the rotation of the TVD wheel through the main plate 1 to the column 2 which is fixedly connected to the engine. Since the tooling is firmly fixed to the engine cover, the fixing structure of the engine cover can withstand this rotational resistance, thereby ensuring that the locking pin 4 effectively restricts the rotation of the TVD wheel. This ensures that the TVD wheel is always locked during the assembly, adjustment, maintenance or disassembly of the range extender-related components, providing stable operating conditions for the operator, avoiding the inconvenience and safety hazards caused by the rotation of the TVD wheel, and improving work efficiency and operational safety.

[0018] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of the equivalents of the claims are intended to be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A locking fixture suitable for the TVD wheel of a range extender, characterized in that: It includes a main body plate (1), two columns (2), two mounting holes (3) and two sets of locking pins (4); The main plate (1) has columns (2) at both ends, and each column (2) has a mounting hole (3). Each mounting hole (3) is used to insert bolts to fix the tooling. The main plate (1) has two sets of locking pins (4). The two sets of locking pins (4) are located between the two columns (2) and are symmetrically arranged. Each set of locking pins (4) includes two locking pins (4). The two locking pins (4) in the same set are used to jointly insert into the same hole of the TVD wheel to restrict its rotation.

2. The locking fixture for a range extender TVD wheel according to claim 1, characterized in that: The shape and size of each locking pin (4) are adapted to the hole of the TVD wheel to ensure a stable locking effect.

3. The locking fixture for a range extender TVD wheel according to claim 1, characterized in that: The diameter of each mounting hole (3) is matched with the bolt used for fixing, ensuring that the bolt can be smoothly inserted and tightened.

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