Device and method for testing installation height and jumping of belt pulley of engine cooling water pump

Abstract

The invention discloses a device and a method for testing the installation height and jumping of a belt pulley of an engine cooling water pump. The testing device comprises a base and a measuring assembly, the measuring assembly comprises a first block-up block arranged on the base, a mounting base arranged on the first block-up block, a Y-direction measuring base connected to the mounting base in a sliding mode, a Y-direction displacement sensor support arranged on the Y-direction measuring base, a Y-direction displacement sensor arranged on the Y-direction displacement sensor support and an X-direction measuring base connected to the Y-direction measuring base in a sliding mode. The device comprises an X-direction measuring base, an X-direction displacement sensor support arranged at the end part of the X-direction measuring base, an X-direction displacement sensor arranged on the X-direction displacement sensor support, a block-up block II connected to the X-direction measuring base in a sliding manner, a probe support arranged on the block-up block II, and a probe arranged on the probe support. The testing device is accurate in testing, free of displacement interference of the measuring assembly in the mounting and dismounting process, large in adjusting range and suitable for testing belt pulleys of various specifications.

Description

Technical Field

[0001] The invention belongs to the technical field of pulley testing, and in particular relates to a device and method for testing the installation height and runout of an engine cooling water pump pulley. Background Art

[0002] Pulleys are assembled on bearings. After assembly, the pulley groove height and runout must be guaranteed. As key product characteristics, data on these heights and runouts must be collected. Traditional methods employ manual mechanical instruments with auxiliary tools, or universal measuring instruments like altimeters. However, these methods often present measurement difficulties, low test efficiency, and low accuracy. Interlocking of key assembly line characteristic data measurements is impossible (if the previous process fails to meet dimensional requirements, the next process will generate an interlocking alarm). Furthermore, universal fixtures cannot be used for variant products, and the measuring table has a short fine-tuning stroke, limiting its scope of application.

[0003] A Chinese patent with the announcement number CN215413657U discloses a measuring device for a water pump pulley, comprising: a first platform, a positioning assembly, a moving assembly, a working platform, a plurality of measuring rods, a first measuring assembly, and a second measuring assembly, wherein the positioning assembly is disposed on the first platform, the moving assembly is disposed on the first platform and is spaced apart from the first base, the working platform is disposed on the moving assembly and is fixedly connected to the moving assembly, a fixed seat is provided at the top of the working platform, the plurality of measuring rods are fixedly connected to the fixed seat, the plurality of measuring rods are spaced apart, and the first measuring assembly and the second measuring assembly are disposed on the working platform. However, the height test reference plane of the water pump assembly pulley in this patent is parallel to the pulley axis and cannot be adjusted in the vertical direction. It is only suitable for testing water pump pulleys of specific specifications and has poor versatility. The working platform provided with the measuring assembly has a small movable range, making it inconvenient to clamp the test piece and affecting the stability of the measurement. Summary of the Invention

[0004] In view of the shortcomings of the existing methods, the present invention provides a device and method for testing the installation height and runout of an engine cooling water pump pulley.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] A device for testing the installation height and runout of an engine cooling water pump pulley comprises a base, a positioning assembly and a measuring assembly arranged on the base, and a fixture assembly arranged on the positioning assembly, the fixture assembly being used to clamp a calibration block and a water pump assembly, the measuring assembly comprising a first raising block arranged on the base, a mounting seat arranged on the first raising block, a Y-axis measuring base slidably connected to the mounting seat, a Y-axis displacement sensor support arranged on the Y-axis measuring base, a Y-axis displacement sensor arranged on the Y-axis displacement sensor support, an X-axis measuring base slidably connected to the Y-axis measuring base, an X-axis displacement sensor support arranged at an end of the X-axis measuring base, an X-axis displacement sensor arranged on the X-axis displacement sensor support, a second raising block slidably connected to the X-axis measuring base, a stylus support arranged on the second raising block, and a stylus arranged on the stylus support.

[0007] Preferably, the X-direction measurement base is further provided with a Y-direction displacement sensor reference block on the side opposite to the Y-direction displacement sensor, and the second raising block is further provided with an X-direction displacement sensor reference block on the side opposite to the X-direction displacement sensor.

[0008] Preferably, a Y-direction compression spring is arranged between the X-direction measurement base and the Y-direction displacement sensor support, and the Y-direction compression spring is sleeved on the contact end of the Y-direction displacement sensor. An X-direction compression spring is arranged between the second pad block and the X-direction displacement sensor support, and the X-direction compression spring is sleeved on the contact end of the X-direction displacement sensor.

[0009] Preferably, a Y-direction baffle is provided on the mounting seat, and an X-direction baffle is provided on the X-direction measurement base. A threaded hole 1 is further provided on the Y-direction baffle, and the threaded hole 1 is internally threaded to connect a Y-direction measurement base positioning bolt.

[0010] Preferably, a fixing plate is further provided on the mounting seat, a second threaded hole is provided on the fixing plate, and the internal thread of the second threaded hole is connected to the X-direction measurement base limiting bolt.

[0011] Preferably, the positioning assembly includes a sliding linear rail, a cylinder and a hand-turned valve arranged on the base, the sliding linear rail is slidably connected to the positioning plate, the telescopic end of the cylinder is connected to the positioning plate, and the hand-turned valve controls the switch of the cylinder.

[0012] Preferably, a limit block for limiting the movement of the positioning plate is further provided on the base.

[0013] Preferably, the clamp assembly includes a base plate arranged on the positioning plate, rib plates symmetrically arranged on both sides of the upper end surface of the base plate, and a mounting plate provided with the end surfaces of the two rib plates. The bottom of the mounting plate is fixed to the upper end surface of the base plate, and two cylinders 2 are provided on the rear end surface of the mounting plate. The telescopic end of the cylinder 2 passes through the mounting plate, and an L-shaped clamp is also provided at the telescopic end of the cylinder 2. A mounting hole is opened on the mounting plate, and a hand-turned valve 2 for controlling the switch of the cylinder 2 is also provided on the base.

[0014] Preferably, a proximity sensor is provided on the top of the mounting plate.

[0015] The method for testing the installation height and runout of the engine cooling water pump pulley using the above-mentioned testing device includes the following steps:

[0016] S1. Install the calibration block on the mounting plate. Create a V-groove on the calibration block that matches the pulley. Start the second hand valve. The clamp assembly will press the calibration block tightly.

[0017] S2. Start the hand valve 1, and the cylinder 1 drives the positioning plate to move to the limit block. At this time, the stylus contacts a V-groove of a circle of the calibration block to calibrate the zero point position. The X-axis displacement sensor contacts the X-axis displacement sensor reference block, and the Y-axis displacement sensor contacts the Y-axis displacement sensor measurement reference block.

[0018] S3. Close manual valve 1 and manual valve 2, return the fixture assembly to its original position, install and move the water pump assembly to be tested to the test position according to the method described in steps S1-S2, contact the measuring needle with the corresponding pulley groove, rotate the pulley, and test the installation height and runout data of the pulley using the Y-axis displacement sensor and the X-axis displacement sensor.

[0019] The positive beneficial effects of the present invention are:

[0020] 1. The Y-axis measuring base of the present invention is slidably connected to the mounting base, and can adjust the stylus to move in a wide range in the Y direction, meeting the testing requirements of pulleys of various specifications. The adjustment range is large, and the workpiece to be tested is clamped by the fixture assembly, and the workpiece to be tested is moved to the testing position by the positioning assembly. During the testing process, the X-axis measuring base moves in the Y direction of the Y-axis measuring base, and the spacer block 2 moves in the X direction of the X-axis measuring base, thereby driving the stylus to move stably in the X and Y directions. The Y-axis movement is used to measure the manufacturing tolerance of the pulley installation height, and the X-axis movement is used to measure the pulley runout tolerance, thereby accurately measuring the pulley installation height and runout data. The test is accurate, the operation is convenient, and the measurement is fast. Moreover, the measuring assembly does not need to be moved during the installation and disassembly process, and there is no displacement interference, which further ensures that the test results are stable and accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1This is a schematic diagram of the structure of the test device for the installation height and runout of the engine cooling water pump pulley of the present invention;

[0022] Figure 2 This is the second structural diagram of the test device for the installation height and runout of the engine cooling water pump pulley of the present invention;

[0023] Figure 3 This is the third structural diagram of the test device for the installation height and runout of the engine cooling water pump pulley of the present invention;

[0024] Figure 4 This is the fourth structural diagram of the test device for the installation height and runout of the engine cooling water pump pulley of the present invention;

[0025] Figure 5 This is a partial structural diagram of a test device for the installation height and runout of an engine cooling water pump pulley according to the present invention;

[0026] Figure 6 This is one of the structural diagrams of the measuring component of the present invention;

[0027] Figure 7 This is the second structural diagram of the measuring component of the present invention;

[0028] Figure 8 This is a schematic cross-sectional view of the measurement assembly of the present invention;

[0029] Figure 9 This is a schematic diagram of the proofreading block structure;

[0030] In the figure: 1-base, 2-positioning assembly, 201-sliding rail, 202-cylinder 1, 203-hand valve 1, 204-positioning plate, 205-limit block, 3-fixture assembly, 301-bottom plate, 302-rib plate, 303-mounting plate, 304-cylinder 2, 305-L-shaped splint, 306-mounting hole, 307-hand valve 2, 308-proximity sensor, 4-measuring assembly, 401-pad block 1, 402-mounting seat, 403-Y-axis measurement base, 404-Y-axis displacement sensor support, 405-Y-axis displacement sensor, 406-X-axis measuring base, 407-X-axis displacement sensor support, 408-X-axis displacement sensor, 409-probe support, 410-probe, 411-fixed plate, 412-Y-axis displacement sensor reference block, 413-X-axis displacement sensor reference block, 414-pad block 2, 415-Y-axis compression spring, 416-X-axis compression spring, 417-Y-axis baffle, 418-X-axis baffle, 419-X-axis measuring base limit bolt, 5-calibration block, 6-water pump assembly. DETAILED DESCRIPTION

[0031] The present invention is further described below with reference to some specific embodiments.

[0032] Example 1

[0033] See also Figure 1-8 A device for testing the installation height and runout of an engine cooling water pump pulley, comprising a base 1, a positioning assembly 2 and a measuring assembly 4 arranged on the base 1, and a fixture assembly 3 arranged on the positioning assembly 2. Figure 2 and Figure 4 The fixture assembly 3 is used to clamp the calibration block 5 during the calibration process and to calibrate the water pump assembly 6 during the testing process.

[0034] See also Figure 6 The measuring assembly 4 includes a raising block 401 arranged on the base 1, a mounting base 402 arranged on the raising block 401, a Y-axis measuring base 403 slidably connected to the mounting base 402, a Y-axis displacement sensor support 404 arranged on the Y-axis measuring base 403, a Y-axis displacement sensor 405 arranged on the Y-axis displacement sensor support 404, an X-axis measuring base 406 slidably connected to the Y-axis measuring base 403, an X-axis displacement sensor support 407 arranged at the end of the X-axis measuring base 406, an X-axis displacement sensor 408 arranged on the X-axis displacement sensor support 407, a raising block 414 slidably connected to the X-axis measuring base 406, a stylus support 409 arranged on the raising block 414, and a stylus 410 arranged on the stylus support 409. The X-direction displacement sensor 408 and the Y-direction displacement sensor 405 are both pen-type sensors with high precision, large measuring range, simple wiring method, and can be directly connected to the measurement system for convenient and rapid data processing. They are connected to the X-direction displacement sensor support 407 and the Y-direction displacement sensor support 404 through copper sleeves; the Y-direction measurement base 403 is provided with a Y-direction guide rail, and the X-direction measurement base 406 is slidably connected to the Y-direction guide rail, driving the stylus 410 to move in the Y direction; the X-direction measurement base 406 is provided with an X-direction guide rail in the X direction, The second raising block 414 is slidably connected to the X-guide rail, driving the measuring needle 410 to move in the X direction; the movement of the measuring needle 410 in the Y direction is used to measure the manufacturing tolerance of the pulley installation height, and the movement of the measuring needle 410 in the X direction is used to measure the pulley runout tolerance; in addition, the Y-direction measuring base 403 is slidably connected to the mounting base 402, and can adjust the measuring needle 410 to move in a large range in the Y direction to meet the testing requirements of pulleys in water pump assemblies of various specifications. The heights of the raising block 1 401 and the raising block 2 414 are designed according to the pulleys of different specifications.

[0035] Further, see Figure 8A Y-axis displacement sensor reference block 412 is also provided on the side of the X-axis measurement base 406 facing the Y-axis displacement sensor 405, and an X-axis displacement sensor reference block 413 is also provided on the side of the second spacer block 414 facing the X-axis displacement sensor 408. During the test process, the Y-axis displacement sensor reference blocks 412 and 413 ensure close contact with the contacts of the Y-axis displacement sensor 405 and the X-axis displacement sensor 408, ensuring accurate measurement, wear resistance, and a long service life.

[0036] Further, see Figure 6 A Y-direction compression spring 415 is installed between the X-direction measurement base 406 and the Y-direction displacement sensor support 404. It is mounted around the contact end of the Y-direction displacement sensor 405 and around the periphery of the Y-direction displacement sensor reference block 412. An X-direction compression spring 416 is installed between the second spacer block 414 and the X-direction displacement sensor support 407. The X-direction displacement sensor support 407 is Z-shaped to facilitate the installation of the X-direction compression spring 416. The X-direction compression spring 416 is mounted around the contact end of the X-direction displacement sensor 408 and around the periphery of the X-direction displacement sensor reference block 413. The Y-direction compression springs 415 and 416 ensure smooth movement of the contacts of the Y-direction displacement sensor 405 and the X-direction displacement sensor 408.

[0037] Further, see Figure 6 and Figure 7 A Y-direction stopper 417 is provided on the mounting base 402, and an X-direction stopper 418 is provided on the X-direction measurement base 406. Y-direction stopper 417 also has a threaded hole 1, which is internally threaded to connect with a Y-direction measurement base positioning bolt. After the zero point position is calibrated by the calibration block 5, the Y-direction measurement base positioning bolt is inserted through the threaded hole 1 and the Y-direction measurement base 403 to secure the position of the Y-direction measurement base 403. Y-direction stopper 417 is L-shaped and prevents the X-direction measurement base 406 from dislodging during movement of the Y-direction measurement base 403 along the Y-direction guide rail. X-direction stopper 418 prevents the second spacer 414 from dislodging during movement of the X-direction measurement base 406 along the X-direction guide rail.

[0038] Further, see Figure 7 Mounting base 402 is also provided with a fixing plate 411 having a second threaded hole defined therein. This threaded hole is threadedly connected to an X-axis measurement base stop bolt 419. After calibration block 5 has calibrated the zero point, X-axis measurement base stop bolt 419 is threadedly connected to threaded hole 419 until it is properly positioned, preventing the X-axis measurement base 406 from moving significantly in the Y direction during testing.

[0039] Further, see Figure 5The positioning assembly 2 includes a sliding rail 201, a cylinder 202 and a manual valve 203 arranged on the base 1. The sliding rail 201 is slidably connected to the positioning plate 204, the telescopic end of the cylinder 202 is connected to the positioning plate 204, and the manual valve 203 controls the switch of the cylinder 202.

[0040] Furthermore, the base 1 is further provided with a limit block 205 for limiting the movement of the positioning plate 204. Two groups of limit blocks are provided to facilitate the positioning plate 204 to be stably limited in the test position.

[0041] Further, see Figure 1 and Figure 3 The fixture assembly 3 includes a base plate 301 disposed on the positioning plate 204, ribs 302 symmetrically disposed on both sides of the upper end surface of the base plate 301, and a mounting plate 303 disposed on the end surfaces of the two ribs 302. The bottom of the mounting plate 303 is fixed to the upper end surface of the base plate 301. Two cylinders 304 are disposed on the rear end surface of the mounting plate 303. The telescopic ends of the cylinders 304 extend through the mounting plate 303 and are provided with L-shaped clamps 305 at the ends. Mounting holes 306 are provided on the mounting plate 303. A manual valve 307 for controlling the opening and closing of the cylinders 304 is also provided on the base 1. The mounting plate 303 serves as a reference surface for testing the height of the pulley. It is perpendicular to the axial direction of the pulley and is suitable for testing pulleys of various specifications. In addition, the fixture assembly drives the calibration block 5 and the water pump assembly 6 to move along with the positioning assembly 2. There is no displacement interference during installation and removal, and the operation is convenient. During the installation and removal of the calibration block 5 and the water pump assembly 6, the measuring assembly does not need to be moved, ensuring stable and accurate test results.

[0042] Furthermore, a proximity sensor 308 is provided on the top of the mounting plate 303. When the calibration block 5 or the water pump assembly 6 is installed in place, the proximity sensor 308 sends a signal indicating that the installation is in place.

[0043] Example 2

[0044] The method for testing the installation height and runout of the engine cooling water pump pulley using the testing device described in the first embodiment includes the following steps:

[0045] S1. Install the calibration block 5 on the mounting plate 303. See the calibration block 5 for its structure. Figure 9 , the shape of the calibration block 5 matches that of the water pump assembly 6 to be tested, the calibration block 5 is provided with a V-shaped groove that matches the pulley in the water pump assembly, the hand valve 2 307 is started, and the fixture assembly 3 presses the calibration block 5;

[0046] S2. Activate manual valve 1 203, and positioning plate 204 moves to limit block 205. Stylus 410 then abuts against a V-groove on a circle of the calibration block, such as the outermost V-groove, to calibrate the zero point. X-axis displacement sensor 408 abuts against X-axis displacement sensor reference block 413, and Y-axis displacement sensor 405 abuts against Y-axis displacement sensor measurement reference block 412.

[0047] S3. Close the hand-operated valve 1 203 and the hand-operated valve 2 307, return the fixture assembly 3 to its original position, install and move the water pump assembly 6 to be tested to the test position according to the method described in steps S1-S2, contact the measuring needle 410 with the corresponding pulley groove of the pulley, such as the outermost pulley groove, rotate the pulley, and test the installation height and runout data of the pulley using the Y-axis displacement sensor 405 and the X-axis displacement sensor 408. The data is then transmitted to the measurement system, which collects and processes the data and outputs the measurement results and process capability.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention and are not limiting. Other modifications or equivalent substitutions made to the technical solution of the present invention by ordinary technicians in this field should be included in the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solution of the present invention.

Claims

1. A test device for the installation height and runout of an engine cooling water pump pulley, characterized in that: The invention comprises a base (1), a positioning assembly (2) and a measuring assembly (4) arranged on the base (1), and a clamp assembly (3) arranged on the positioning assembly (2), wherein the clamp assembly (3) is used to clamp a calibration block (5) and a water pump assembly (6), and the measuring assembly (4) comprises a first raising block (401) arranged on the base (1), a mounting seat (402) arranged on the first raising block (401), a Y-direction measuring base (403) slidably connected to the mounting seat (402), a Y-direction displacement sensor support (404) arranged on the Y-direction measuring base (403), and a second measuring device (405) arranged on the second measuring device (406). A Y-direction displacement sensor (405) on a Y-direction displacement sensor support (404), an X-direction measurement base (406) slidably connected to the Y-direction measurement base (403), an X-direction displacement sensor support (407) arranged at the end of the X-direction measurement base (406), an X-direction displacement sensor (408) arranged on the X-direction displacement sensor support (407), a second padding block (414) slidably connected to the X-direction measurement base (406), a stylus support (409) arranged on the second padding block (414), and a stylus (410) arranged on the stylus support (409).

2. The test device for the installation height and runout of the engine cooling water pump pulley according to claim 1, characterized in that: A Y-direction displacement sensor reference block (412) is further provided on the side of the X-direction measurement base (406) relative to the Y-direction displacement sensor (405), and an X-direction displacement sensor reference block (413) is further provided on the side of the second padding block (414) relative to the X-direction displacement sensor (408).

3. The test device for the installation height and runout of the engine cooling water pump pulley according to claim 2, characterized in that: A Y-direction compression spring (415) is provided between the X-direction measurement base (406) and the Y-direction displacement sensor support (404), and the Y-direction compression spring (415) is sleeved on the contact end of the Y-direction displacement sensor (405). An X-direction compression spring (416) is provided between the second padding block (414) and the X-direction displacement sensor support (407), and the X-direction compression spring (416) is sleeved on the contact end of the X-direction displacement sensor (408).

4. The test device for the installation height and runout of the engine cooling water pump pulley according to claim 3, characterized in that: A Y-direction baffle (417) is provided on the mounting seat (402), and an X-direction baffle (418) is provided on the X-direction measurement base (406). A threaded hole 1 is also provided on the Y-direction baffle (417), and the threaded hole 1 is internally threaded to connect a Y-direction measurement base positioning bolt.

5. The test device for the installation height and runout of the engine cooling water pump pulley according to claim 4, characterized in that: A fixing plate (411) is also provided on the mounting seat (402), and a second threaded hole is provided on the fixing plate (411), and the second threaded hole is internally threadedly connected to an X-direction measurement base limiting bolt (419).

6. The test device for the installation height and runout of the engine cooling water pump pulley according to claim 1, characterized in that: The positioning assembly (2) comprises a sliding linear rail (201), a cylinder (202) and a hand-operated valve (203) arranged on the base (1); the sliding linear rail (201) is slidably connected to a positioning plate (204); the telescopic end of the cylinder (202) is connected to the positioning plate (204); and the hand-operated valve (203) controls the opening and closing of the cylinder (202).

7. The test device for the installation height and runout of the engine cooling water pump pulley according to claim 6, characterized in that: A limiting block (205) for limiting the movement of the positioning plate (204) is also provided on the base (1).

8. The test device for the installation height and runout of the engine cooling water pump pulley according to claim 6, characterized in that: The clamp assembly (3) comprises a base plate (301) arranged on a positioning plate (204), rib plates (302) symmetrically arranged on both sides of the upper end surface of the base plate (301), and a mounting plate (303) provided on the end surfaces of the two rib plates (302). The bottom of the mounting plate (303) is fixed to the upper end surface of the base plate (301). Two cylinders (304) are provided on the rear end surface of the mounting plate (303). The telescopic ends of the cylinders (304) pass through the mounting plate (303). The telescopic ends of the cylinders (304) are further provided with L-shaped clamping plates (305). A mounting hole (306) is provided on the mounting plate (303). The base (1) is further provided with a hand-operated valve (307) for controlling the switch of the cylinders (304).

9. The test device for the installation height and runout of the engine cooling water pump pulley according to claim 8, characterized in that: A proximity sensor (308) is provided on the top of the mounting plate (303).

10. A method for testing the installation height and runout of an engine cooling water pump pulley using the testing device according to any one of claims 1 to 9, characterized in that: The steps include: S1. Install the calibration block (5) on the mounting plate (303), provide a V-shaped groove on the calibration block (5) to match the pulley, start the second hand valve (307), and press the calibration block (5) with the clamp assembly (3); S2, start the hand valve 1 (203), the cylinder 1 (202) drives the positioning plate (204) to move to the limit block (205), at which time the measuring needle (410) abuts against a certain circle of V-shaped grooves of the calibration block to calibrate the zero point position, the X-direction displacement sensor (408) abuts against the X-direction displacement sensor reference block (413), and the Y-direction displacement sensor (405) abuts against the Y-direction displacement sensor measurement reference block (412); S3. Close the hand-operated valve 1 (203) and the hand-operated valve 2 (307), and return the fixture assembly (3) to its original position. Install and move the water pump assembly (6) to be tested to the test position according to the method described in steps S1-S2. The measuring needle (410) abuts against the corresponding pulley groove of the pulley, rotate the pulley, and test the installation height and runout data of the pulley through the Y-direction displacement sensor (405) and the X-direction displacement sensor (408).

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