A corner marker connecting tool

Abstract

This utility model discloses a corner marker connection fixture, belonging to the field of engine testing technology. It solves the problem that existing corner marker measurements, typically performed by directly mounting the marker onto the engine pulley, affect the accuracy of the measurements. The corner marker connection fixture includes a connector, which comprises a connecting rod, a first connecting flange, and a second connecting flange. The first and second connecting flanges are respectively fixed to both ends of the connecting rod. The first connecting flange has multiple bolt holes that mate with the bolt holes of the engine pulley, and is bolted to the engine pulley. The second connecting flange has multiple bolt holes that mate with the mounting holes of the corner marker, and is bolted to the corner marker. This corner marker connection fixture improves the accuracy of corner marker measurements.

Description

Technical Field

[0001] This utility model relates to the field of engine testing technology, and more specifically, it relates to a point marker connection fixture. Background Technology

[0002] During engine bench testing, combustion analysis equipment is required for adjusting and calibrating the engine's internal combustion conditions and performance indicators. This equipment must precisely measure the engine crankshaft's speed and angular position. These measurements are performed by the angular displacement measuring device (protractor) within the combustion analysis equipment. The protractor is then mounted on the drive pulley to collect the crankshaft steering angle signal, determine the engine's top dead center (TDC) and stroke signals, and calculate the engine's TDC angle relative to the crankshaft.

[0003] When performing measurements, the corner marker needs to be securely mounted on the engine, typically connected to the engine pulley. Currently, the common method for installing a corner marker is to drill several bolt holes in the engine pulley to match the corner marker's mounting flange, and then directly fix the corner marker to the pulley. However, this installation method firstly makes it difficult to ensure the coaxiality of the corner marker and the engine crankshaft, thus affecting the accuracy of the corner marker measurement. Furthermore, existing corner markers, such as the shock-absorbing sleeve block and fixing assembly for the corner marker's extension rod described in patent publication CN222782948U, require simultaneous adjustment of the relative positions of the bracket, shock-absorbing sleeve block, and mounting bracket when fixing the extension rod, making the installation process cumbersome and inefficient. Utility Model Content

[0004] The technical problem to be solved by this utility model is to address the above-mentioned shortcomings of the prior art by providing a corner marker connection fixture, which improves the accuracy of corner marker measurements and facilitates the fixing of the corner marker's extension rod, thereby effectively improving installation efficiency.

[0005] The technical solution of this utility model is as follows: a corner marker connection fixture includes a connector, which includes a connecting rod, a first connecting flange, and a second connecting flange. The first and second connecting flanges are respectively fixed to both ends of the connecting rod. The first connecting flange has multiple first connecting flange holes adapted to the bolt holes of the engine pulley, and the first connecting flange is bolted to the engine pulley. The second connecting flange has multiple second connecting flange holes adapted to the mounting holes of the corner marker, and the second connecting flange is bolted to the corner marker. The diameter of the first connecting flange is larger than the diameter of the second connecting flange. The first and second connecting flange holes are staggered. The thickness of the first connecting flange is greater than the thickness of the second connecting flange. A clearance groove is provided in the middle of the first connecting flange. The connection fixture also includes a corner marker bracket for stabilizing the extension rod of the corner marker.

[0006] As a further improvement, the corner marker bracket includes a fixed rod and a movable rod. The fixed rod is mounted on the engine block. The bottom of the movable rod is provided with a movable ring, which is slidably sleeved on the fixed rod. The top of the movable rod is provided with a fixing hole, and the extension rod of the corner marker is inserted into the fixing hole. Fixing nuts are threaded onto the fixed rods on both sides of the movable ring.

[0007] Furthermore, the movable ring is provided with a slider, and the top of the fixed rod is provided with a groove, and the slider is slidably installed in the groove.

[0008] Furthermore, a limiting plate is provided at one end of the fixing rod.

[0009] Furthermore, the centerlines of the clearance groove, the angle indicator, and the engine pulley are all on the same straight line.

[0010] Furthermore, a rubber gasket is provided between the second connecting flange and the angle gauge.

[0011] Furthermore, the surfaces of the connecting rod, the first connecting flange, and the second connecting flange are all provided with an anti-rust layer.

[0012] Beneficial effects

[0013] Compared with the prior art, this utility model has the following advantages:

[0014] 1. This utility model provides a corner marker connection fixture, in which the corner marker is mounted on the engine pulley via a connecting rod, effectively improving the accuracy of the corner marker measurement; at the same time, only the position of the movable ring needs to be adjusted to insert the extension rod of the corner marker into the fixing hole, making the operation simple, reducing the time required, and improving the installation efficiency.

[0015] 2. The corner marker connection fixture of this utility model improves the overall stability of the corner marker during the testing process and enhances the accuracy of the corner marker measurement by increasing the diameter and thickness of the first connecting flange. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the front cross-sectional structure of the present invention in use;

[0017] Figure 2 for Figure 1 Enlarged structural diagram of A in the middle;

[0018] Figure 3 This is a three-dimensional structural diagram of the connector in this utility model;

[0019] Figure 4 This is a schematic diagram of the front view cross-sectional structure of the angle marker bracket in this utility model.

[0020] Wherein: 1-connecting rod, 2-first connecting flange, 3-second connecting flange, 4-fixed rod, 5-movable rod, 6-fastening nut, 7-fixed hole, 8-gap groove, 9-slide groove, 10-slider, 11-rubber pad, 12-movable ring, 13-angle marker, 14-engine pulley, 15-limiting plate, 21-first connecting flange hole, 31-second connecting flange hole. Detailed Implementation

[0021] The present invention will be further described below with reference to specific embodiments shown in the accompanying drawings.

[0022] See Figure 1-4A protractor connection fixture includes a connector, which comprises a connecting rod 1, a first connecting flange 2, and a second connecting flange 3. The first connecting flange 2 and the second connecting flange 3 are respectively fixed to both ends of the connecting rod 1. The first connecting flange 2 has multiple first connecting flange holes 21 that are adapted to the bolt holes of an engine pulley 14, and the first connecting flange 2 and the engine pulley 14 are connected by bolts. The second connecting flange 3 has multiple second connecting flange holes 31 that are adapted to the mounting holes of the protractor 13, and the second connecting flange 3 and the protractor 13 are connected by bolts. The diameter of the first connecting flange 2 is larger than the diameter of the second connecting flange 3, which effectively improves the stability of the protractor 13 during measurement. The first connecting flange holes 21 and the second connecting flange holes 31 are staggered, which facilitates the separation of the first connecting flange 2 and the second connecting flange 3. Do not bolt the first connecting flange 2 to the engine pulley 14 or the angle marker 13. This avoids the bolts on the first connecting flange 2 and the second connecting flange 3 from affecting the installation or interfering with each other during connection, thus effectively improving installation efficiency. The thickness of the first connecting flange 2 is greater than that of the second connecting flange 3. Increasing the thickness of the first connecting flange 2 makes its weight greater than that of the second connecting flange 3, thereby further improving the stability of the angle marker 13 during measurement. A clearance groove 8 is provided in the middle of the first connecting flange 2. The clearance groove 8 makes way for the annular protrusion in the middle of the engine pulley 14, avoiding interference between the first connecting flange 2 and the engine pulley 14 during installation. At the same time, the clearance groove 8 can reduce the overall weight of the connector. The connecting fixture also includes an angle marker bracket for stabilizing the extension rod of the angle marker 13.

[0023] During installation, the angle marker 13 is mounted on the engine pulley 14 via the connecting rod 1, and the extension rod of the angle marker 13 is fixed by the angle marker bracket, effectively improving the accuracy of the angle marker measurement. Loosen the fixing nuts 6 on both sides of the movable rod 5, adjust the position of the movable rod 5 so that the extension rod of the angle marker 13 is inserted into the fixing hole 7 on the movable rod 5. After the movable rod 5 is adjusted to the designated position, tighten the fixing nuts 6 on both sides of the movable rod 5 to fix the movable rod 5. This bracket only requires adjusting the position of the movable rod 5 to insert the extension rod of the angle marker 13 into the fixing hole 7, which is simple to operate, requires little installation time, and improves installation efficiency.

[0024] In this embodiment, the corner marker bracket includes a fixed rod 4 and a movable rod 5. The fixed rod 4 is mounted on the engine block. The bottom of the movable rod 5 has a movable ring 12, which is slidably fitted onto the fixed rod 4. The top of the movable rod 5 has a fixing hole 7, into which the extension rod of the corner marker 13 is inserted. Fixing nuts 6 are threaded onto the fixed rod 4 on both sides of the movable ring 12. The diameter of the movable ring 12 is smaller than the diameter of the fixing nuts, effectively improving the stability of the movable rod 5. The movable rod 5 is slidably mounted on the fixed rod 4 via the movable ring 12, thereby adjusting the distance between the movable rod 5 and the corner marker 13, so that the extension rod of the corner marker 13 is inserted into the fixing hole 7 on the movable rod 5. After the movable rod 5 is adjusted to the designated position, the movable rod 5 is fixed by tightening the fixing nuts 6 on both sides of the movable rod 5. The operation is simple, the time required is short, and the installation efficiency is improved.

[0025] Preferably, a rubber pad for shock absorption can be provided between the fixing hole 7 and the extension rod of the corner marker 13 to prevent the vibration generated by the engine operation from being transmitted to the corner marker through the corner marker bracket, thereby further reducing the impact of the vibration during engine operation on the accuracy of the measurement of the corner marker 13.

[0026] In this embodiment, a slider 10 is provided inside the movable ring 12, and a groove 9 is provided at the top of the fixed rod 4. The slider 10 is slidably installed in the groove 9. When adjusting the movable rod 5, the slider 10 can play a guiding role and increase the stability of the movable rod 5. This prevents the movable rod 5 from rotating during the measurement process, which would affect the measurement accuracy of the angle marker 13.

[0027] In this embodiment, a limiting plate 15 is provided at one end of the fixed rod 4 to prevent the movable rod 5 from falling off when it is adjusted to the extreme position of the fixed rod 4.

[0028] In this embodiment, the center axes of the clearance groove 8, the protractor 13, and the engine pulley 14 are all on the same straight line, ensuring that the center axis of the protractor 13 is on the same straight line as the center axis of the engine pulley 14, thereby improving the accuracy of the protractor 13 measurement.

[0029] In this embodiment, a rubber pad 11 is provided between the second connecting flange 3 and the angle marker 13. During measurement, the angle marker 13 is mounted on the engine pulley 14 through this fixture, and the contact is rigid. The vibration generated by the engine transportation will be transmitted to the angle marker 13 along the first connecting flange 2, the connecting rod 1, and the second connecting flange 3, which will affect the test of the angle marker 13 to a certain extent. The rubber pad 11 between the angle marker 13 and the second connecting flange 3 can effectively reduce the impact of vibration on the measurement results.

[0030] In this embodiment, the surfaces of the connecting rod 1, the first connecting flange 2, and the second connecting flange 3 are all provided with an anti-rust layer; this prevents the tooling from rusting due to oil contamination on its surface after long-term use, effectively extending its service life.

[0031] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several modifications and improvements can be made without departing from the structure of the present utility model. These modifications and improvements will not affect the effectiveness of the present utility model or the practicality of the patent.

Claims

1. A gage connection tool, characterized by, The connector includes a connecting rod (1), a first connecting flange (2), and a second connecting flange (3). The first connecting flange (2) and the second connecting flange (3) are respectively fixed to both ends of the connecting rod (1). The first connecting flange (2) has multiple first connecting flange holes (21) adapted to the bolt holes of the engine pulley (14), and the first connecting flange (2) is bolted to the engine pulley (14). The second connecting flange (3) has multiple mounting holes adapted to the angle marker (13). The second connecting flange hole (31) and the second connecting flange (3) are connected to the corner marker (13) by bolts. The diameter of the first connecting flange (2) is larger than the diameter of the second connecting flange (3). The first connecting flange hole (21) and the second connecting flange hole (31) are staggered. The thickness of the first connecting flange (2) is larger than the thickness of the second connecting flange (3). A relief groove (8) is provided in the middle position of the first connecting flange (2). The connecting fixture also includes a corner marker bracket for stabilizing the extension rod of the corner marker (13).

2. The corner marker attachment tool of claim 1, wherein, The corner marker bracket includes a fixed rod (4) and a movable rod (5). The fixed rod (4) is mounted on the engine block. The bottom of the movable rod (5) is provided with a movable ring (12). The movable ring (12) is slidably sleeved on the fixed rod (4). The top of the movable rod (5) is provided with a fixing hole (7). The extension rod of the corner marker (13) is inserted into the fixing hole (7). Fixing nuts (6) are threaded onto the fixed rods (4) on both sides of the movable ring (12).

3. A corner marker attachment tool as defined in claim 2, wherein, The movable ring (12) is provided with a slider (10), and the top of the fixed rod (4) is provided with a groove (9). The slider (10) is slidably installed in the groove (9).

4. The corner marker attachment tool of claim 3, wherein: One end of the fixing rod (4) is provided with a limiting plate (15).

5. The corner gage connecting tool of claim 1 wherein, The central axes of the clearance groove (8), the corner marker (13), and the engine pulley (14) are all on the same straight line.

6. The corner marker attachment tool of claim 1, wherein, A rubber gasket (11) is provided between the second connecting flange (3) and the angle marker (13).

7. The corner marker attachment tool of claim 1, wherein: The surfaces of the connecting rod (1), the first connecting flange (2), and the second connecting flange (3) are all provided with an anti-rust layer.

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