Adjusting device for cooling water pump of automobile engine

Abstract

The utility model relates to the technical field of engine cooling water pumps, and discloses an automobile engine cooling water pump adjusting device which comprises a cooling water pump body, a belt pulley is fixedly connected to one end of a rotating shaft in the cooling water pump body, and a movable frame is slidably connected into a concave cavity of the belt pulley. Two symmetrical through avoiding holes are formed in one side of the movable frame, studs used in cooperation with the two avoiding holes are fixedly connected to the inner wall of one side of the concave cavity of the belt wheel, nuts are in threaded connection to the two studs, and one sides of the nuts make close contact with the inner wall of one side of the movable frame; a plurality of gaskets with the same number are arranged on the circumferential outer walls of the two studs and located between the movable frame and the inner wall of one side of the concave cavity of the belt wheel. The gap between the movable frame and the belt pulley can be filled through the matched use of the middle backing ring and the end backing rings, and abrasion caused by friction between the belt and the edge of the belt pulley in the working process of the belt is prevented.

Description

Technical Field

[0001] This utility model relates to the field of engine cooling water pump technology, and more specifically to an automotive engine cooling water pump regulating device. Background Technology

[0002] The automotive engine cooling system maintains the engine operating temperature by circulating coolant. Its core component, the water pump, is usually driven by the crankshaft through a pulley. Traditional water pumps mostly adopt a fixed displacement design, and their speed is linearly related to the engine speed.

[0003] A search revealed Chinese patent CN220769801U, which discloses an adjusting device for an automotive engine coolant pump. This device allows for flexible adjustment of the width of the pulley by adding a washer to the upper end of the inner stud of the pulley. This enables the pulley to be adapted to the connection of belts of various sizes, thus improving its applicability. However, after adding the washer, a gap will exist between the movable frame and the pulley. During the operation of the belt, its inner wall will come into contact with the edge of the pulley, causing rapid wear on the inner wall of the belt and shortening its service life. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides an automotive engine cooling water pump regulating device to solve the problems existing in the background art.

[0005] This utility model provides the following technical solution: a cooling water pump adjustment device for an automobile engine, including a cooling water pump body. One end of the internal shaft of the cooling water pump body is fixedly connected to a pulley. A movable frame is slidably connected in the cavity of the pulley. Two symmetrical through-holes are provided on one side of the movable frame. Studs that cooperate with the two through-holes are fixedly connected to the inner wall of one side of the cavity of the pulley. Nuts are threaded onto both studs, and one side of the nut is in close contact with the inner wall of one side of the movable frame. Multiple shims of the same number are provided on the outer circumference of the two studs and between the movable frame and the inner wall of one side of the cavity of the pulley. An intermediate washer ring with one fewer number than the shims in the same group is provided between the circumference of the pulley and the movable frame. An end washer ring is provided between the intermediate washer ring and the movable frame on the side closer to the movable frame. A positioning component is provided between the multiple intermediate washer rings for positioning.

[0006] As a further embodiment of this utility model, the positioning component includes at least four positioning grooves arranged in a ring array on one side of the intermediate pad ring, and positioning blocks that correspond to and cooperate with the positioning grooves are fixedly connected to the other side of the intermediate pad ring and both sides of the end pad ring.

[0007] As a further embodiment of this utility model, a positioning groove with the same number of intermediate washers is also provided on one side of the circular tube wall of the pulley, and the multiple positioning grooves on one side of the circular tube wall of the pulley correspond one-to-one with the positioning blocks on the intermediate washers near its side. A positioning groove with multiple positioning blocks on one side of the end washers is also provided on one side of the movable frame.

[0008] As a further embodiment of this utility model, the positioning blocks fixedly connected to both sides of the end washer correspond one-to-one with the positions of multiple positioning blocks on the adjacent middle washer.

[0009] As a further embodiment of this utility model, the thickness of the intermediate washer, the end washer and the gasket are the same, the thickness of the positioning block is the same as the depth of the positioning groove, and the width of the intermediate washer and the end washer is the same as the thickness of the circular tube wall of the pulley.

[0010] As a further embodiment of this utility model, the outer circumferential wall of the intermediate washer, the outer circumferential wall of the end washer, and the outer circumferential wall of the pulley are all coated with a coating to reduce frictional resistance. The coating is preferably a graphite coating.

[0011] As a further embodiment of this invention, the number of nuts on the same stud is at least two.

[0012] The technical effects and advantages of this utility model are as follows:

[0013] 1. This utility model uses the combination of the middle washer and the end washer to fill the gap between the movable frame and the pulley, preventing wear caused by friction between the belt and the edge of the pulley during belt operation.

[0014] 2. This utility model, by providing a positioning component, can position multiple intermediate washers and between intermediate washers and end washers, preventing them from rotating relative to each other during operation, which would cause gaps between the movable frame and the pulley, leading to belt wear.

[0015] 3. By incorporating a graphite coating, this utility model can effectively reduce the frictional resistance between the pulley, intermediate washer, end washer, and belt, thereby increasing the transmission efficiency, reducing belt wear, and extending the belt's service life. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0017] Figure 2 For the present utility model Figure 1 A schematic diagram of the explosion structure.

[0018] Figure 3 For the present utility model Figure 2 An enlarged structural diagram on the left.

[0019] Figure 4 This is an enlarged structural schematic diagram of the intermediate gasket ring of this utility model.

[0020] Figure 5 This utility model Figure 2 A partially enlarged structural diagram.

[0021] The attached figures are labeled as follows: 1. Cooling water pump body; 2. Pulley; 3. Movable frame; 4. Stud; 5. Nut; 6. Washer; 7. Intermediate washer; 8. End washer; 9. Positioning block; 10. Clearance hole; 11. Positioning groove. Detailed Implementation

[0022] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. In addition, the forms of the various structures described in the following embodiments are merely illustrative. This utility model is not limited to the structures described in the following embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0023] Reference Figures 1-5This utility model provides an adjustment device for an automotive engine coolant pump, including a coolant pump body 1. One end of a rotating shaft inside the coolant pump body 1 is fixedly connected to a pulley 2 by bolts. A movable frame 3 is slidably connected inside the cavity of the pulley 2. Two symmetrical through-holes 10 are provided on one side of the movable frame 3. Studs 4, which mate with the two through-holes 10, are welded to the inner wall of one side of the cavity of the pulley 2. Nuts 5 are threaded onto both studs 4, and one side of each nut 5 is in close contact with the inner wall of one side of the movable frame 3. At least two nuts 5 are present on the same stud 4. When adjusting the pulley 2 on the coolant pump body 1, the multiple nuts 5 on the studs 4 are first removed, and then the movable frame 3 is slowly removed along the cavity inside the pulley 2. On the outer circumference of the movable frame 3 and the two studs 4, and between the inner wall of the cavity on one side of the movable frame 3 and the pulley 2, there are multiple shims 6 of the same number. On the circumferential side wall of the pulley 2, between it and the movable frame 3, there is an intermediate washer 7, one less than the number of shims 6 in the same group. An end washer 8 is located between the intermediate washer 7 and the movable frame 3, near the movable frame 3. The intermediate washer 7 and the end washer 8 work together to fill the gap between the movable frame 3 and the pulley 2, preventing wear caused by friction with the edge of the pulley 2 during belt operation. A positioning assembly is provided between the multiple intermediate washer 7 for positioning. The positioning assembly includes at least four positioning grooves 11 arranged in a circular array on one side of the intermediate washer 7. When the movable frame 3 is removed... Then, according to the required thickness of the belt, a corresponding number of washers 6 are fitted onto the stud 4. After the washers 6 are installed, an intermediate washer 7, one less than the number of washers 6 in the same group, is installed on the circular tube wall of the pulley 2. During the installation of the intermediate washer 7, the positioning block 9 on one side is embedded into the positioning groove 11 of the previous intermediate washer 7. After the intermediate washer 7 is installed, an end washer 8 is installed, and during the installation, the positioning block 9 on one side of it is embedded into the positioning groove 11 on one side of the previous intermediate washer 7. By providing a positioning component, the multiple intermediate washer 7s can be positioned relative to each other and between the intermediate washer 7s and the end washer 8, preventing them from rotating relative to each other during operation, which would cause a gap between the movable frame 3 and the pulley 2, leading to belt wear. In this configuration, the other side of the intermediate washer 7 and both sides of the end washer 8 are welded with positioning blocks 9 that correspond one-to-one with the positioning grooves 11. The circular tube wall of the pulley 2 also has a number of positioning grooves 11 corresponding to the same intermediate washer 7. These multiple positioning grooves 11 on one side of the circular tube wall of the pulley 2 correspond one-to-one with the positioning blocks 9 on the intermediate washer 7 closest to it. The movable frame 3 also has positioning grooves 11 on one side that correspond to the positioning blocks 9 on one side of the end washer 8. After the end washer 8 is installed, the movable frame 3 is slid into the cavity on the pulley 2. During this sliding process, the positioning grooves 11 on the movable frame 3 are embedded into the positioning blocks 9 on the side of the end washer 8. After complete submersion, the nut 5 is reinstalled on the exposed stud 4.Furthermore, at least two nuts 5 must be installed on the same stud 4. After installation, the width of the pulley 2 can be adjusted.

[0024] In this utility model, the positioning blocks 9 welded on both sides of the end washer 8 correspond one-to-one with the positions of multiple positioning blocks 9 on the adjacent middle washer 7.

[0025] In this invention, the thickness of the intermediate washer 7, the end washer 8, and the washer 6 are the same. The thickness of the positioning block 9 is the same as the depth of the positioning groove 11. The width of the intermediate washer 7 and the end washer 8 is the same as the thickness of the cylindrical wall of the pulley 2. The outer circumference of the intermediate washer 7, the outer circumference of the end washer 8, and the outer circumference of the pulley 2 are all coated with a coating to reduce frictional resistance. The coating is preferably a graphite coating. By providing a graphite coating, the frictional resistance between the pulley 2, the intermediate washer 7, the end washer 8, and the belt can be effectively reduced, the transmission effect can be increased, the wear of the belt can be reduced, and the service life of the belt can be extended.

[0026] The use of this utility model involves the following steps:

[0027] S1: When it is necessary to adjust the pulley 2 on the cooling water pump body 1, first remove the multiple nuts 5 on the stud 4, and then slowly remove the movable frame 3 along the concave cavity inside the pulley 2.

[0028] S2: After removing the movable frame 3, fit the corresponding number of shims 6 on the stud 4 according to the required thickness of the belt. After the shims 6 are installed, install an intermediate washer 7 on the round tube wall of the pulley 2, which is one less than the shims 6 in the same group. During the installation of the intermediate washer 7, the positioning block 9 on one side is embedded into the positioning groove 11 of the previous intermediate washer 7.

[0029] S3: After the intermediate washer 7 is installed, install an end washer 8 and during the installation process, the positioning block 9 on one side of it is embedded into the positioning groove 11 on the side of the previous intermediate washer 7. After the end washer 8 is installed, slide the movable frame 3 along the cavity on the pulley 2. During the sliding process, make its positioning groove 11 embed into the positioning block 9 on the side of the previous end washer 8. After it is fully submerged, reinstall the nut 5 on the exposed stud 4, and install at least two nuts 5 on the same stud 4. After the installation is completed, the width adjustment of the pulley 2 can be completed.

[0030] Finally, the following points should be noted: In the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection" and "linkage" should be interpreted broadly, and can be mechanical or electrical connection, or internal connection between two components, or direct connection. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationship. When the absolute position of the described object changes, the relative positional relationship may change.

[0031] The electronic components and modules used in this utility model can all be parts that are commonly used in the market and can achieve the specific functions in this case. The specific models and sizes can be selected and adjusted according to actual needs.

[0032] The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

Claims

1. A regulating device for an automotive engine cooling water pump, comprising a cooling water pump body (1), wherein a pulley (2) is fixedly connected to one end of a rotating shaft inside the cooling water pump body (1), characterized in that: A movable frame (3) is slidably connected inside the cavity of the pulley (2). Two symmetrical through-holes (10) are provided on one side of the movable frame (3). A stud (4) that works with the two through-holes (10) is fixedly connected to the inner wall of one side of the cavity of the pulley (2). A nut (5) is threaded onto the upper part of the two studs (4), and one side of the nut (5) is in close contact with the inner wall of one side of the movable frame (3). Multiple washers (6) of the same number are provided on the outer circumference of the two studs (4) and between the movable frame (3) and the inner wall of one side of the cavity of the pulley (2). An intermediate washer (7) with one less number than the washer (6) in the same group is provided between the circumference side wall of the pulley (2) and the movable frame (3). An end washer (8) is provided between the intermediate washer (7) located near the movable frame (3) and the movable frame (3). A positioning component for positioning is provided between the multiple intermediate washer (7). The positioning component includes at least four positioning grooves (11) arranged in a ring array on one side of the intermediate pad ring (7), and positioning blocks (9) that correspond to and cooperate with the positioning grooves (11) are fixedly connected to the other side of the intermediate pad ring (7) and both sides of the end pad ring (8).

2. The automotive engine cooling water pump regulating device according to claim 1, characterized in that: The pulley (2) also has a number of positioning grooves (11) on one side of the circular tube wall, which are the same as the number of intermediate washers (7). The multiple positioning grooves (11) on one side of the circular tube wall of the pulley (2) correspond to the positioning blocks (9) on the intermediate washers (7) near it. The movable frame (3) also has a positioning groove (11) on one side that cooperates with the multiple positioning blocks (9) on the side of the end washers (8).

3. The automotive engine cooling water pump regulating device according to claim 2, characterized in that: The positioning blocks (9) fixedly connected to both sides of the end washer (8) correspond one-to-one with the positions of multiple positioning blocks (9) on the adjacent middle washer (7).

4. The automotive engine cooling water pump regulating device according to claim 1, characterized in that: The thickness of the intermediate washer (7), the end washer (8) and the washer (6) is the same. The thickness of the positioning block (9) is the same as the depth of the positioning groove (11). The width of the intermediate washer (7) and the end washer (8) is the same as the thickness of the circular tube wall of the pulley (2).

5. The automobile engine cooling water pump regulating device according to claim 4, characterized in that: The outer circumferential wall of the intermediate washer (7), the outer circumferential wall of the end washer (8), and the outer circumferential wall of the pulley (2) are all coated with a coating to reduce frictional resistance. The coating is a graphite coating.

6. The automotive engine cooling water pump regulating device according to claim 1, characterized in that: The number of nuts (5) on the same stud (4) is at least two.

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