A structure for facilitating measurement of engine crankshaft thrust clearance

Abstract

The utility model relates to a structure convenient to measure engine crankshaft thrust clearance relates to engine technical field, it includes crankshaft, is located on the flywheel part of crankshaft and is located on the flywheel shell of flywheel part outside, the window is set up to flywheel shell side, the flywheel shell cover plate is detachably connected on the window, and the flywheel part is equipped with the boss in the window corresponding position. The utility model exhibits the advantage in the operation convenience, cost control, reliability and universality etc. provides an innovative and practical scheme for the measurement of engine crankshaft thrust clearance.

Description

Technical Field

[0001] This utility model relates to the field of engine technology, and in particular to a structure that facilitates the measurement of engine crankshaft thrust clearance. Background Technology

[0002] Measuring crankshaft thrust clearance is crucial during routine engine maintenance and repair. Traditional methods typically involve fixing a dial indicator to the front or rear end of the crankshaft, then using external force to push the crankshaft and measuring the axial movement distance with the dial indicator to determine the crankshaft thrust clearance. However, measuring crankshaft thrust clearance after the assembly of medium to large power plant units often presents numerous inconveniences. Because a cooler is installed at the front of the engine and a motor is connected at the rear, there is insufficient operating space at both ends to directly push the crankshaft.

[0003] To address this issue, the current conventional method involves disassembling the engine block side cover and then using a pry bar to move the crankshaft counterweight inside the engine, thereby causing the crankshaft to move back and forth and allowing for the measurement of crankshaft thrust clearance. However, this method has significant drawbacks. Disassembling and assembling the engine block side cover is not only cumbersome, but the side cover itself has strict sealing requirements. Each time it is reassembled, new gaskets often need to be replaced or new sealant needs to be applied. This undoubtedly increases labor, material, and maintenance time costs. The overall operation is complex, and the service cost is high, which greatly affects the efficiency and economy of engine maintenance and makes it difficult to meet the needs of modern power plant units for efficient and convenient maintenance. Utility Model Content

[0004] The purpose of this invention is to provide a structure that facilitates the measurement of engine crankshaft thrust clearance, thereby solving many problems existing in traditional measurement methods. It demonstrates advantages in terms of ease of operation, cost control, reliability, and versatility, and provides an innovative and practical solution for measuring engine crankshaft thrust clearance.

[0005] To achieve the above objectives, the present invention provides a structure for facilitating the measurement of engine crankshaft thrust clearance, comprising a crankshaft, a flywheel component mounted on the crankshaft, and a flywheel housing located outside the flywheel component. The flywheel housing has a window on its side, and a flywheel housing cover plate is detachably connected to the window. The flywheel component has a boss at the corresponding position of the window.

[0006] Preferably, a pry bar can be inserted into the window and applied to the boss to drive the crankshaft to move axially.

[0007] Preferably, a dial indicator may be arranged at the front end of the crankshaft to measure the movement distance of the crankshaft, thereby obtaining the crankshaft thrust clearance.

[0008] Preferably, there are two windows, which are distributed on both sides of the flywheel housing, and the boss is arranged in a circle corresponding to the two windows.

[0009] Preferably, the two windows are arranged symmetrically.

[0010] Preferably, two pry bars can be applied to the two windows and the corresponding protrusions respectively to pry the flywheel component on both sides of the flywheel housing at the same time.

[0011] Preferably, a sealing gasket or sealant may be provided between the flywheel housing and the flywheel housing cover plate to enhance the sealing performance.

[0012] Preferably, the flywheel housing cover can seal or open the window.

[0013] Preferably, the flywheel component is bolted together with the crankshaft.

[0014] Preferably, the flywheel housing cover plate is assembled with the flywheel housing by bolts.

[0015] In summary, this utility model has the following beneficial technical effects: Traditional measurement methods require disassembling the engine block side cover and then using a pry bar to pry the crankshaft balance block inside the engine. This operation is cumbersome and can easily damage the sealing of the engine block side cover. This invention greatly simplifies the measurement of crankshaft thrust clearance. Windows are added to both sides of the flywheel housing. During measurement, simply insert a pry bar through the window into the boss acting on the flywheel component to move the crankshaft axially. There is no need to disassemble the engine block side cover, eliminating complicated operations such as replacing gaskets or applying adhesive, greatly improving the convenience and efficiency of the measurement.

[0016] Since there is no need to disassemble the engine side cover, this utility model can avoid the additional costs incurred due to disassembly and assembly, such as the cost of replacing large-size gaskets, the cost of large-area sealant, and labor costs. This saves a lot of resources for engine maintenance and repair, reduces the overall maintenance cost, and makes the measurement of crankshaft thrust clearance more economical and feasible.

[0017] The flywheel assembly is reliably connected to the crankshaft via bolts, ensuring effective force transmission during prying. Simultaneously, the flywheel assembly's boss is positioned in the center of the flywheel housing window, allowing the pry bar to operate precisely and guaranteeing measurement accuracy. Furthermore, the tight fit between the flywheel housing cover and the flywheel housing ensures rapid restoration of the engine's internal seal and safety after measurement, guaranteeing normal engine operation.

[0018] This invention is applicable to various engine types, including medium and large power plant units. It can effectively solve the problem of crankshaft thrust clearance measurement in different application scenarios, providing a universal and efficient solution for engine maintenance. It has broad market application prospects and promotional value. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of a structure for facilitating the measurement of engine crankshaft thrust clearance according to the present invention; Figure 2 This is a schematic diagram of a window in a structure for facilitating the measurement of engine crankshaft thrust clearance according to this utility model; Figure 3 This is a partial cross-sectional view of a structure of the present invention that facilitates the measurement of engine crankshaft thrust clearance.

[0020] Reference numerals: 1. Flywheel component; 2. Flywheel housing cover; 3. Crankshaft; 4. Flywheel housing. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] After the medium to large power plant unit is assembled, the crankshaft thrust clearance of the engine needs to be measured. Since the engine has a cooler at the front and a motor connected at the rear, there is no space to move the crankshaft 3. The traditional measurement method is to remove the engine block side cover and use a pry bar to move the crankshaft balance weight inside the engine to achieve the back-and-forth movement of the crankshaft 3, thereby measuring the crankshaft 3 thrust clearance. However, this method requires disassembling and reassembling the engine block side cover, which has sealing requirements. Reassembly requires replacing gaskets or applying adhesive, making the overall operation complex and the service cost high.

[0023] This utility model discloses a structure that facilitates the measurement of engine crankshaft thrust clearance, effectively solving the aforementioned problems. The structure includes windows symmetrically arranged on both sides of the flywheel housing 4, allowing the flywheel component 1 to be pried open using a pry bar. The flywheel component 1 is bolted to the crankshaft 3, causing the crankshaft 3 to move axially. The distance traveled is measured using a dial indicator to obtain the crankshaft 3 thrust clearance. This method is simpler to operate and does not incur additional material costs.

[0024] The flywheel component 1 has a boss, and after assembly, the boss is located in the middle of the window on the flywheel housing 4. This design allows the pry bar to be applied precisely to the flywheel component 1, thereby effectively transmitting force and driving the crankshaft 3 to move. The flywheel component 1 and the crankshaft 3 are bolted together. This connection method ensures the reliability of the connection and facilitates disassembly and assembly, which is beneficial for subsequent maintenance and replacement.

[0025] The flywheel housing 4 serves as both protection and support, with symmetrical windows on both sides. The windows are positioned to correspond to the protrusions on the flywheel component 1, ensuring that a pry bar can be easily inserted and effectively pried open. When a pry bar is used to pry open the protrusions on the flywheel component 1 through the windows on the flywheel housing 4, the crankshaft 3 moves axially upwards. At this time, a dial indicator located at the front end of the crankshaft 3 can measure the crankshaft 3 thrust clearance. Furthermore, two pry bars can be used simultaneously to pry open the flywheel component 1 from both sides of the flywheel housing 4. After measurement, the windows on the flywheel housing 4 are covered with the flywheel housing cover plate 2 to ensure the engine's internal sealing and safety.

[0026] The flywheel housing cover 2 and the flywheel housing 4 are bolted together. This connection method ensures both a strong connection and easy disassembly and assembly, facilitating the opening of the window during thrust clearance measurement and restoring the seal after measurement. The tight fit between the flywheel housing 4 and the flywheel housing cover 2 ensures the stability of the internal environment of the engine during normal operation and also provides convenient conditions for thrust clearance measurement. In addition, a sealing gasket or sealant can be added between the flywheel housing cover and the flywheel housing to further ensure sealing performance.

[0027] The structure of this invention simplifies the measurement of the crankshaft 3 thrust clearance. When measurement is required, simply insert a pry bar through the window on the flywheel housing 4, applying it to the boss of the flywheel component 1. Due to the bolted connection between the flywheel component 1 and the crankshaft 3, prying the flywheel component 1 will move the crankshaft 3 axially. At this point, by observing the dial indicator located at the front end of the crankshaft 3, the movement distance of the crankshaft 3 can be measured, thus obtaining the crankshaft 3 thrust clearance. This structure eliminates the need to disassemble the engine side cover, which covers a large area, avoiding the cumbersome operations of replacing gaskets or applying adhesive over large areas due to disassembling the engine side cover. This significantly improves measurement efficiency and saves costs.

[0028] The structure provided by this utility model for conveniently measuring the thrust clearance of the engine crankshaft 3 is achieved by adding windows on both sides of the flywheel housing 4, and by rationally designing the structure of the flywheel component 1 and its connection with the crankshaft 3, as well as the assembly relationship between the flywheel housing cover plate 2 and the flywheel housing 4. This effectively solves the problems of complex operation and high service cost of traditional measurement methods, and has significant practical value and promotion significance.

[0029] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A structure for facilitating the measurement of engine crankshaft thrust clearance, characterized in that, It includes a crankshaft (3), a flywheel component (1) disposed on the crankshaft (3) and a flywheel housing (4) disposed on the outside of the flywheel component (1). The flywheel housing (4) has a window on its side and a flywheel housing cover plate (2) is detachably connected to the window. The flywheel component (1) has a boss at the corresponding position of the window.

2. The structure for facilitating the measurement of engine crankshaft thrust clearance according to claim 1, characterized in that, A pry bar can be inserted into the window and applied to the boss to drive the crankshaft (3) to move axially.

3. The structure for facilitating the measurement of engine crankshaft thrust clearance according to claim 2, characterized in that, A dial indicator may be arranged at the front end of the crankshaft (3) to measure the moving distance of the crankshaft (3) and thus obtain the thrust clearance of the crankshaft (3).

4. The structure for facilitating the measurement of engine crankshaft thrust clearance according to claim 3, characterized in that, The windows are set to two and distributed on both sides of the flywheel housing (4), and the boss is set to a circle corresponding to the two windows.

5. The structure for facilitating the measurement of engine crankshaft thrust clearance according to claim 4, characterized in that, The two windows are set symmetrically.

6. The structure for facilitating the measurement of engine crankshaft thrust clearance according to claim 5, characterized in that, The flywheel component (1) can be pried open simultaneously on both sides of the flywheel housing (4) by applying two pry bars to the two windows and the corresponding bosses respectively.

7. A structure for facilitating the measurement of engine crankshaft thrust clearance according to any one of claims 1-6, characterized in that, A sealing gasket or sealant may be provided between the flywheel housing (4) and the flywheel housing cover plate (2) to enhance the sealing performance.

8. A structure for facilitating the measurement of engine crankshaft thrust clearance according to any one of claims 1-6, characterized in that, The flywheel housing cover (2) can cover or open the window.

9. A structure for facilitating the measurement of engine crankshaft thrust clearance according to any one of claims 1-6, characterized in that, The flywheel component (1) is assembled with the crankshaft (3) by bolts.

10. A structure for facilitating the measurement of engine crankshaft thrust clearance according to any one of claims 1-6, characterized in that, The flywheel housing cover plate (2) and the flywheel housing (4) are assembled together by bolts.

Images