Belt pulley of water pump of automobile engine

Abstract

The utility model discloses an automobile engine water pump belt pulley which comprises a water pump shell and a connecting mechanism arranged in the water pump shell, and the connecting mechanism comprises a rotating assembly, an adjusting assembly and a clamping assembly. The rotating assembly comprises a water pump impeller and a rotating bearing, the adjusting assembly comprises a belt pulley fixing disc and an adjustable ring disc, and the clamping assembly comprises a movable block, a manual plate and a limiting block; during working, the gap between the adjustable ring disc and the belt wheel fixing disc is controlled by increasing or reducing the number of the adjusting cushion discs, so that the groove width of the wheel groove is controlled, water pump belts with different thicknesses are suitable, the friction force between the water pump belts and the wheel groove is adjusted, and perfect operation is achieved; and then the water pump belt slides into the wheel groove, the movable block is pushed by damping of the extension spring to move upwards and stops moving upwards after being limited by the limiting block, falling of the water pump belt caused by shaking of the movable block is avoided, and fixing is firm and not prone to shaking.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile engine water pumps, in particular to an automobile engine water pump pulley. Background Art

[0002] Pulleys are mainly used in situations where power is transmitted over long distances, such as the output of power from small diesel engines, agricultural vehicles, tractors, automobiles, mining machinery, mechanical processing equipment, textile machinery, packaging machinery, lathes, the transmission of power for some small-horsepower motorcycles, the transmission of power for agricultural machinery, air compressors, reducers, generators, etc. The advantages of pulley transmission are: pulley transmission can alleviate load impact; pulley transmission runs smoothly, with low noise and low vibration; pulley transmission has a simple structure and is easy to adjust; pulley transmission does not require the manufacturing and installation accuracy of pulleys as strictly as tooth transmission; pulley transmission has the function of overload protection; the adjustment range of the two-axis center distance of pulley transmission is larger.

[0003] For example, the application number CN200975468Y discloses a water pump pulley for an engine, which is suitable for gasoline engines and diesel engines. The utility model has the following characteristics: the water pump pulley has two wheel grooves, the crankshaft pulley is connected to the water pump driving wheel groove (1) by a belt, the water pump driving wheel groove (1) is connected to the shaft coupling bearing of the water pump by interference fit or screw connection through a connecting hole (3), and is used to drive the water pump; the accessory driving wheel groove (2) is connected to the shaft coupling bearing of the water pump by interference fit or screw connection through a connecting hole (3), and other accessories carried by the engine are driven by the belt installed on the accessory driving wheel groove (2). The utility model has the following advantages: compared with the commonly used water pump pulley, the water pump pulley has an additional accessory driving wheel groove in addition to the wheel groove connected to the crankshaft pulley, and the belt installed on the accessory driving wheel groove is connected to the pulley groove on the accessory, so that the water pump pulley drives the engine accessories. The engine gear train structure can be simplified and compact, the axial size of the engine can be reduced, and the cost can be reduced.

[0004] However, when the engine water pump pulley is in use, the belt is prone to slipping and idling when the friction is weak. When the water pump pulley is installed with the belt, there are raised ring plates on both sides, so the belt needs to be very loose before it can be put on. As a result, the put-on belt is easy to fall off before it is tightened, causing the problem of repeated belt putting. This does not meet people's usage needs. Therefore, a car engine water pump pulley is needed. Utility Model Content

[0005] In order to solve the defects of the prior art that water pump belts of various widths are not suitable and the belts are easy to fall off when being sleeved, the utility model provides a car engine water pump pulley.

[0006] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0007] The utility model discloses a water pump pulley for an automobile engine, comprising a water pump housing and a connecting mechanism arranged inside the water pump housing, wherein the connecting mechanism comprises a rotating assembly, an adjusting assembly and a clamping assembly;

[0008] The rotating assembly includes a water pump impeller, a rotating bearing, a water pump shaft and a sealing ring. The water pump impeller is arranged inside the water pump housing, and the rotating bearing is fixedly installed on the water pump housing. The water pump impeller is welded to the outer side wall of the water pump shaft. The water pump shaft penetrates and is fixedly installed on the rotating bearing. The end surface of the rotating bearing close to the water pump impeller is provided with a sealing ring;

[0009] The adjustment assembly includes a pulley cam, a pulley fixing plate, an adjustable ring plate, fastening bolts and a wheel groove, a pulley cam is welded to one end of the water pump shaft away from the water pump impeller, a pulley fixing plate is fixedly installed to one end of the pulley cam away from the water pump shaft, an adjustable ring plate is arranged at the end surface of the pulley fixing plate close to the water pump housing, the adjustable ring plate is fixedly installed on the pulley fixing plate by fastening bolts, and a wheel groove is opened on the outer side wall of the pulley fixing plate;

[0010] The clamping assembly includes a movable groove, a movable block, a manual plate, a limit block and a locking screw. A movable groove is opened on the end surface of the pulley fixing plate away from the pulley cam shaft, a movable block is placed inside the movable groove, a manual plate is welded on the upper surface wall of the movable block, and a limit block arranged above the movable block is fixedly installed on the side wall of the movable groove, and the movable block is screwed and fixed to the inside of the movable groove by a locking screw.

[0011] As a preferred technical solution of the utility model, an adjusting gasket is arranged between the pulley fixing plate and the adjustable ring plate, and axial holes are opened at the centers of the adjustable ring plate and the adjusting gasket. The adjustable ring plate and the adjusting gasket are both sleeved on the pulley cam through the axial holes, and the adjusting gasket is fixedly mounted on the pulley fixing plate by fastening bolts, and the size of the axial hole is exactly the same as that of the pulley cam.

[0012] As a preferred technical solution of the utility model, a tension spring damper is fixed to the lower surface wall of the movable block, and one end of the tension spring damper away from the movable block is welded to the bottom of the movable groove.

[0013] As a preferred technical solution of the utility model, the diameters of the wheel groove and the adjusting pad are exactly the same.

[0014] As a preferred technical solution of the utility model, the movable grooves, movable blocks, manual plates, limit blocks and locking screws are provided in four groups, and the four groups of movable grooves are evenly distributed on the end surface of the pulley fixing plate.

[0015] As a preferred technical solution of the utility model, the highest point of the movable block is completely the same as the highest point of the adjustable ring disk.

[0016] The utility model has the following beneficial effects:

[0017] By setting the adjustable ring disc, the fastening bolts, the adjusting pad disc and the shaft hole, when working, firstly select the number of the required adjusting pad discs according to the width of the water pump belt, then sleeve the adjusting pad disc on the belt pulley convex shaft through the shaft hole, then sleeve the adjustable ring disc on the belt pulley convex shaft through the shaft hole, then fix the adjustable ring disc and the adjusting pad disc on the belt pulley fixed disc through the fastening bolts, and control the gap between the adjustable ring disc and the belt pulley fixed disc by increasing or decreasing the number of the adjusting pad discs, thereby controlling the groove width of the wheel groove, and being suitable for water pump belts of different thicknesses, adjusting the friction between the water pump belt and the wheel groove, thereby achieving perfect operation;

[0018] By setting the movable groove, movable block, manual plate, limit block, locking screw and tension spring damping, loosen the locking screw, when working, manually press down the manual plate to move the movable block down inside the movable groove, then slide the water pump belt into the wheel groove along the edge of the movable block, then release the pressed manual plate, the movable block is pushed to move upward by the tension spring damping, stops moving upward after being limited by the limit block, and finally fixes the movable block on the pulley fixing plate by the locking screw to prevent the movable block from shaking and causing the water pump belt to fall off, and the movable block is firmly fixed and not easy to shake. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a structural schematic diagram of a water pump pulley of an automobile engine of the utility model;

[0022] Figure 2 It is a half-section structural schematic diagram of a rotating assembly of a water pump pulley of an automobile engine of the utility model;

[0023] Figure 3 This is a half-section structural schematic diagram of an automobile engine water pump pulley adjustment component of the utility model;

[0024] Figure 4 It is a partial half-section structural schematic diagram of a car engine water pump pulley clamping assembly of the utility model;

[0025] Figure 5 The utility model is an exploded structural schematic diagram of an adjustable ring disc and an adjustable pad disc of a water pump pulley of an automobile engine.

[0026] In the figure: 1. Water pump housing; 2. Water pump impeller; 3. Rotating bearing; 4. Water pump shaft; 5. Sealing ring; 6. Pulley cam; 7. Pulley fixing plate; 8. Adjustable ring plate; 9. Fastening bolt; 10. Wheel groove; 11. Movable groove; 12. Movable block; 13. Manual plate; 14. Limit block; 15. Locking screw; 16. Adjusting pad; 17. Shaft hole; 18. Tension spring damping. DETAILED DESCRIPTION

[0027] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0028] Embodiment 1: as Figure 1-5 As shown, the utility model provides a car engine water pump pulley, comprising a water pump housing 1 and a connecting mechanism arranged inside the water pump housing 1, wherein the connecting mechanism comprises a rotating assembly, an adjusting assembly and a clamping assembly;

[0029] The rotating assembly includes a water pump impeller 2, a rotating bearing 3, a water pump shaft 4 and a sealing ring 5. The water pump impeller 2 is arranged inside the water pump housing 1, and the rotating bearing 3 is fixedly installed on the water pump housing 1. The water pump impeller 2 is welded on the outer wall of the water pump shaft 4. The water pump shaft 4 penetrates and is fixedly installed on the rotating bearing 3. A sealing ring 5 is arranged at the end surface of the rotating bearing 3 close to the water pump impeller 2. When working, the engine drives the water pump belt to rotate, and the water pump belt rotates inside the wheel groove 10. The water pump belt is squeezed and pressed against the pulley fixed disk 7 by the adjustable ring disk 8, the movable block 12 and the adjusting pad disk 16. The water pump belt then drives the pulley fixed disk 7 to rotate. The pulley fixed disk 7 drives the water pump shaft 4 to rotate through the pulley cam 6, and the water pump shaft 4 drives the water pump impeller 2 to rotate, so that the engine water pump starts to work;

[0030] The adjusting assembly includes a pulley cam 6, a pulley fixing plate 7, an adjustable ring plate 8, a fastening bolt 9 and a wheel groove 10. The end of the water pump shaft 4 away from the water pump impeller 2 is welded with a pulley cam 6, and the end of the pulley cam 6 away from the water pump shaft 4 is fixedly installed with a pulley fixing plate 7. The end surface of the pulley fixing plate 7 close to the water pump housing 1 is provided with an adjustable ring plate 8. The adjustable ring plate 8 is fixedly installed on the pulley fixing plate 7 by fastening bolts 9. A wheel groove 10 is opened on the outer wall of the pulley fixing plate 7. When working, first select the desired adjustment according to the width of the water pump belt. The number of the adjusting pads 16 needs to be adjusted, and then the adjusting pads 16 are sleeved on the pulley cam 6 through the shaft hole 17, and then the adjustable ring disk 8 is sleeved on the pulley cam 6 through the shaft hole 17, and then the adjustable ring disk 8 and the adjusting pads 16 are fixedly installed on the pulley fixed disk 7 by fastening bolts 9. By increasing or decreasing the number of the adjusting pads 16, the gap between the adjustable ring disk 8 and the pulley fixed disk 7 can be controlled, thereby controlling the groove width of the wheel groove 10, which is suitable for water pump belts of different thicknesses, and adjusting the friction between the water pump belt and the wheel groove 10, so as to achieve perfect operation.

[0031] Furthermore, an adjusting pad 16 is arranged between the pulley fixing plate 7 and the adjustable ring plate 8, and an axial hole 17 is opened at the center of the adjustable ring plate 8 and the adjusting pad 16. The adjustable ring plate 8 and the adjusting pad 16 are both sleeved on the pulley cam 6 through the axial hole 17, and the adjusting pad 16 is fixedly installed on the pulley fixing plate 7 by a fastening bolt 9. The size of the axial hole 17 is exactly the same as the pulley cam 6. During operation, by setting the adjusting pad 16 and the axial hole 17, the fastening bolt 9 is fixed more securely and not easy to shake. The size of the axial hole 17 is exactly the same as the pulley cam 6, so that the adjustable ring plate 8 and the adjusting pad 16 can be completely sleeved on the pulley cam 6, which is not easy to shake and runs more stably.

[0032] Furthermore, the diameters of the wheel groove 10 and the adjusting pad 16 are exactly the same. During operation, by setting the wheel groove 10 and the adjusting pad 16 with exactly the same diameters, it is beneficial for the water pump belt to fit perfectly, and is suitable for water pump belts of different thicknesses, with a wider range of applicability.

[0033] Embodiment 2: as Figure 1-5As shown, the utility model proposes a car engine water pump pulley, compared with embodiment 1, as another embodiment of the utility model, the clamping assembly includes a movable groove 11, a movable block 12, a manual plate 13, a limit block 14 and a locking screw 15, the pulley fixing plate 7 is provided with a movable groove 11 on the end surface away from the pulley cam 6, the movable block 12 is placed inside the movable groove 11, the upper surface wall of the movable block 12 is welded with a manual plate 13, and the limit block 14 arranged above the movable block 12 is fixedly installed on the side wall of the movable groove 11, and the movable block 12 is fixed by the locking screw 15. 5 is screwed and fixed inside the movable groove 11. When working, loosen the locking screw 15, manually press down the manual plate 13, move the movable block 12 downward inside the movable groove 11, then slide the water pump belt into the wheel groove 10 along the edge of the movable block 12, then release the manual plate 13, the movable block 12 is pushed upward by the tension spring damping 18, and stops moving upward after being limited by the limit block 14. Finally, the movable block 12 is fixed on the pulley fixing plate 7 by the locking screw 15 to prevent the movable block 12 from shaking and causing the water pump belt to fall off. The movable block 12 is firmly fixed and not easy to shake.

[0034] Furthermore, a tension spring damper 18 is fixed to the lower surface wall of the movable block 12, and one end of the tension spring damper 18 away from the movable block 12 is welded to the bottom of the movable groove 11. During operation, when the movable block 12 moves downward, the movable block 12 moves downward to compress the tension spring damper 18. When the movable block 12 is needed, the tension spring damper 18 stretches and rebounds. No manual operation is required, which is more efficient.

[0035] Furthermore, there are four groups of movable grooves 11, movable blocks 12, manual plates 13, limit blocks 14 and locking screws 15. The four groups of movable grooves 11 are evenly distributed on the end surface of the pulley fixing plate 7. When working, the four groups of clamping components are beneficial to limiting the water pump belt, and the four angles are more comprehensive. At the same time, the four groups of clamping components can be retracted to realize more convenient feeding control operation of the water pump belt.

[0036] Furthermore, the highest point of the movable block 12 is exactly the same as the highest point of the adjustable ring disk 8. During operation, by setting the adjustable ring disk 8 and the movable block 12, it is beneficial for the water pump belt to rotate inside the wheel groove 10, and the limiting fixation prevents the water pump belt from shaking, thereby achieving a fixed and reliable control operation.

[0037] During operation, firstly, the number of required adjusting washers 16 is selected according to the width of the water pump belt, and then the adjusting washers 16 are sleeved on the pulley cam 6 through the shaft hole 17, and then the adjustable ring disc 8 is sleeved on the pulley cam 6 through the shaft hole 17, and then the adjustable ring disc 8 and the adjusting washers 16 are fixedly installed on the pulley fixed disc 7 by fastening bolts 9. By increasing or decreasing the number of adjusting washers 16, the gap between the adjustable ring disc 8 and the pulley fixed disc 7 is controlled, thereby controlling the groove width of the wheel groove 10, and it is suitable for water pump belts of different thicknesses, and the friction between the water pump belt and the wheel groove 10 is adjusted to achieve perfect operation.

[0038] Next, loosen the locking screw 15, manually press down the manual plate 13, move the movable block 12 downward inside the movable groove 11, then slide the water pump belt along the edge of the movable block 12 into the wheel groove 10, then release the manual plate 13, the movable block 12 is pushed upward by the tension spring damping 18, and stops moving upward after being limited by the limit block 14. Finally, the movable block 12 is fixed to the pulley fixing plate 7 by the locking screw 15 to prevent the movable block 12 from shaking and causing the water pump belt to fall off. The movable block 12 is firmly fixed and not easy to shake.

[0039] Finally, the engine drives the water pump belt to rotate, and the water pump belt rotates inside the wheel groove 10. The water pump belt is squeezed and pressed against the pulley fixed plate 7 by the adjustable ring plate 8, the movable block 12 and the adjusting pad plate 16. The water pump belt then drives the pulley fixed plate 7 to rotate. The pulley fixed plate 7 drives the water pump shaft 4 to rotate through the pulley cam 6, and the water pump shaft 4 drives the water pump impeller 2 to rotate, so that the engine water pump starts to work.

[0040] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A car engine water pump pulley, comprising a water pump housing (1) and a connecting mechanism arranged inside the water pump housing (1), characterized in that: The connecting mechanism includes a rotating assembly, an adjusting assembly and a clamping assembly; The rotating assembly comprises a water pump impeller (2), a rotating bearing (3), a water pump shaft (4) and a sealing ring (5); the water pump impeller (2) is arranged inside the water pump housing (1), and the rotating bearing (3) is fixedly mounted on the water pump housing (1); the water pump impeller (2) is welded to the outer wall of the water pump shaft (4); the water pump shaft (4) penetrates and is fixedly mounted on the rotating bearing (3); and the sealing ring (5) is arranged at the end surface of the rotating bearing (3) close to the water pump impeller (2); The adjustment assembly comprises a pulley cam (6), a pulley fixing plate (7), an adjustable ring plate (8), a fastening bolt (9) and a wheel groove (10); the pulley cam (6) is welded to one end of the water pump shaft (4) away from the water pump impeller (2); the pulley fixing plate (7) is fixedly mounted to one end of the pulley cam (6) away from the water pump shaft (4); the adjustable ring plate (8) is arranged at an end surface of the pulley fixing plate (7) close to the water pump housing (1); the adjustable ring plate (8) is fixedly mounted on the pulley fixing plate (7) by means of a fastening bolt (9); and a wheel groove (10) is provided on an outer side wall of the pulley fixing plate (7); The clamping assembly comprises a movable groove (11), a movable block (12), a manual plate (13), a limit block (14) and a locking screw (15); the movable groove (11) is provided on the end surface of the pulley fixing plate (7) away from the pulley cam (6); the movable block (12) is placed inside the movable groove (11); the manual plate (13) is welded to the upper surface wall of the movable block (12); the limit block (14) arranged above the movable block (12) is fixedly mounted on the side wall of the movable groove (11); and the movable block (12) is screwed and fixed inside the movable groove (11) by the locking screw (15).

2. The automobile engine water pump pulley according to claim 1, characterized in that: An adjusting pad (16) is arranged between the pulley fixing disk (7) and the adjustable ring disk (8), and an axial hole (17) is opened at the center of the adjustable ring disk (8) and the adjusting pad (16). The adjustable ring disk (8) and the adjusting pad (16) are both sleeved on the pulley cam (6) through the axial hole (17), and the adjusting pad (16) is fixedly mounted on the pulley fixing disk (7) by means of a fastening bolt (9), and the size of the axial hole (17) is exactly the same as that of the pulley cam (6).

3. The automobile engine water pump pulley according to claim 1, characterized in that: A tension spring damper (18) is fixed to the lower surface wall of the movable block (12), and one end of the tension spring damper (18) away from the movable block (12) is welded to the bottom of the movable groove (11).

4. The automobile engine water pump pulley according to claim 1, characterized in that: The diameters of the wheel groove (10) and the adjusting pad (16) are exactly the same.

5. The automobile engine water pump pulley according to claim 1, characterized in that: The movable groove (11), movable block (12), manual plate (13), limit block (14) and locking screw (15) are provided in four groups in total, and the four groups of movable grooves (11) are evenly distributed on the end surface of the pulley fixing plate (7).

6. The automobile engine water pump pulley according to claim 1, characterized in that: The highest point of the movable block (12) is exactly the same as the highest point of the adjustable ring disk (8).

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