CN220979871U

CN220979871U - Electromagnetic variable-speed water pump

Info

Publication number: CN220979871U
Application number: CN202322717623.8U
Authority: CN
Inventors: 迟晓丽; 杨世强; 孙传利
Original assignee: Weichai Power Co Ltd
Current assignee: Weichai Power Co Ltd
Priority date: 2023-10-10
Filing date: 2023-10-10
Publication date: 2024-05-17
Anticipated expiration: 2033-10-10

Abstract

The utility model discloses an electromagnetic variable-speed water pump, which comprises a water pump shell, wherein a shaft connecting bearing is arranged in the water pump shell; one end of the shaft-connected bearing is provided with a water pump impeller, and the other end of the shaft-connected bearing is provided with a magnet fixing disc; one side of the magnet fixing plate is sequentially provided with a connecting plate, a spring piece and a friction plate, one end of the spring piece is fixedly connected with the connecting plate, and the other end of the spring piece is fixedly connected with the friction plate; the side of spring leaf sets up the amortization stopper, the one end and the connection pad fixed connection of amortization stopper, the other end top is on the friction disc. Abnormal sound of the electromagnetic variable speed water pump can be prevented, noise is reduced, and misjudgment of the actual condition of the electromagnetic variable speed water pump is avoided; but also fully utilize the space and ensure the product performance in the limited space.

Description

Electromagnetic variable-speed water pump

Technical Field

The utility model belongs to the technical field of water pumps for vehicles, and particularly relates to an electromagnetic variable-speed water pump.

Background

The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.

Along with the continuous improvement of the thermal efficiency requirement of the diesel engine, the novel technology of the water pump with the speed change function, namely the electromagnetic speed change water pump, is applied to the high-efficiency diesel engine, and has the advantages of strong structural reliability and good performance. However, the arrangement of the electromagnetic variable-speed water pump is limited by small space arrangement and high speed ratio, so that the design space of the variable-speed water pump is limited, and the variable-speed water pump meeting the performance requirement of an engine is designed in the limited space, and the structural design requirement is high.

In the prior art, a friction disc of an electromagnetic variable speed water pump is connected with a magnet fixing disc through a spring piece, a certain inclination angle is generated by a back cushion piece, pretension force is generated by the spring piece, resilience force of the spring piece is ensured, and the friction disc is driven to be rapidly separated from a belt pulley. When the clutch is powered off, the gasket collides with the magnet fixing disc, abnormal sound is easy to generate, and the user can misjudge that the clutch is damaged. And one end of the spring piece is fixed on the friction disk, and the other end of the spring piece is fixed on the magnet fixing disk, so that the space for fixing the magnet is occupied. The magnet needs to move outwards, but the material consumption is increased or the magnet is reduced, and the suction force can be reduced due to the reduction of the magnet, so that the performance of the electromagnetic variable-speed water pump is affected.

Disclosure of utility model

Aiming at the problems, the utility model provides the electromagnetic variable speed water pump, which can prevent the electromagnetic variable speed water pump from giving out abnormal sound, reduce noise and avoid misjudgment on the actual situation of the electromagnetic variable speed water pump; but also fully utilize the space and ensure the product performance in the limited space.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

an electromagnetic variable-speed water pump comprises a water pump shell, wherein a shaft-connected bearing is arranged in the water pump shell; one end of the shaft-connected bearing is provided with a water pump impeller, and the other end of the shaft-connected bearing is provided with a magnet fixing disc; one side of the magnet fixing plate is sequentially provided with a connecting plate, a spring piece and a friction plate, one end of the spring piece is fixedly connected with the connecting plate, and the other end of the spring piece is fixedly connected with the friction plate; the side of spring leaf sets up the amortization stopper, the one end and the connection pad fixed connection of amortization stopper, the other end top is on the friction disc.

Further, a belt pulley is arranged on the water pump housing, a cavity is formed in one end of the belt pulley, the friction disc is arranged in the cavity, and the surface of the friction disc is close to the inner surface of the cavity.

Further, one end of the spring piece, which is connected with the connecting disc, is connected with the connecting disc through a first rivet, and the other end of the spring piece, which is connected with the friction disc, is connected with the connecting disc through a second rivet.

Further, the length of the first rivet is greater than the length of the second rivet, and the width of the end portions of the first rivet and the second rivet is greater than the width of the middle portion.

Further, the width of the silencing plug at one end of the connecting disc is smaller than that of the silencing plug at one end of the friction disc.

Further, the silencing plug is positioned at the side part of the connection position of the spring piece and the friction disc.

Further, the spring pieces are obliquely arranged, a plurality of spring pieces are arranged, and the spring pieces are arranged around the shaft bearing.

Further, a magnet is arranged on the other side of the magnet fixing disc, and the magnet is fixedly connected with the magnet fixing disc.

Further, one end of the water pump housing is provided with a water pump impeller, and the water pump impeller is sleeved on the shaft connecting bearing.

Further, an iron core is arranged at the other end of the belt pulley, and a coil is arranged in the iron core; the iron core is connected with the water pump shell through bolts.

Compared with the prior art, the utility model has the advantages and positive effects that:

1. According to the utility model, the silencing plug is arranged, one end of the silencing plug is fixedly connected with the connecting disc, the other end of the silencing plug is propped against the friction disc, when the friction disc is separated from the belt pulley, the spring piece drives the friction disc to rebound, the friction disc impacts the silencing plug, the spring piece can not impact the connecting disc, abnormal sound can not be generated, noise is effectively reduced, and the phenomenon that the clutch is damaged due to misjudgment is avoided. Meanwhile, the silencing plug is positioned on the side part of the connection position of the spring piece and the friction disc, so that one end of the spring piece is jacked up, and the spring piece is stretched, so that the spring piece has a certain inclination angle and generates elastic force.

2. One end of a spring piece is fixed on a connecting disc, the spring piece and a magnet fixing disc are connected together through rivets, and the other end of the spring piece is connected to a friction disc. The arrangement of bolts and nuts is reduced, the structure is more compact, the arrangement space of the magnets is increased, larger magnets can be adopted, the magnetic force is stronger, and the magnetic force following rotation performance of the water pump by the magnets is improved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model.

FIG. 1 is a front cross-sectional view of an electromagnetic variable speed water pump of the present utility model;

FIG. 2 is a block diagram of a silencing plug of an electromagnetic variable speed water pump of the present utility model;

FIG. 3 is a side cross-sectional view of the electromagnetic variable speed water pump of the present utility model;

in the figure: 1. a shaft is connected with a bearing; 2. a water pump impeller; 3. a magnet; 4. a magnet fixing plate; 5. a connecting disc; 6. a friction plate; 7. a first rivet; 8. a second rivet; 9. a spring piece; 10. a sound deadening plug; 11. a water pump housing; 12. a belt pulley; 13. an iron core; 14. a coil.

Detailed Description

It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the utility model. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present invention. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

The water pump cools the engine through circulating cooling liquid, and consumes a large amount of power of the engine, so that along with the increasing strictness of emission regulations, the speed regulation of the water pump becomes a necessary trend, and the impeller of the traditional water pump is driven to rotate by the belt pulley and the engine crankshaft.

In the electromagnetic variable-speed water pump in the prior art, a gasket is arranged on one side of a spring piece, so that the spring has a certain inclination angle, the spring piece needs to rely on the gasket to ensure that the spring piece has a certain inclination angle to generate elasticity, the spring piece rebounds when the friction disc is separated from the belt pulley, and the gasket and the magnet fixing disc can collide to generate abnormal sound.

The abnormal sound can influence the judgment on the actual condition of the electromagnetic variable speed water pump, and the long-time collision can cause certain damage to the components in the electromagnetic variable speed water pump. And the spring piece is fixed on the magnet fixed disk, and the arrangement space of the magnet can be occupied, so that the magnetic force is influenced, the performance of the electromagnetic variable speed water pump is reduced, and the electromagnetic variable speed water pump cannot normally run.

The utility model is described in detail below with reference to the accompanying drawings, and an electromagnetic variable speed water pump disclosed in this embodiment, as shown in fig. 1, includes a water pump housing 11, and a shaft-connected bearing 1 is disposed in the water pump housing 11; one end of the shaft-connected bearing 1 is provided with a water pump impeller 2, and the other end of the shaft-connected bearing 1 is provided with a magnet fixing disc 4; one side of the magnet fixing plate 4 is sequentially provided with a connecting plate 5, a spring piece 9 and a friction plate 6, one end of the spring piece 9 is fixedly connected with the connecting plate 5, and the other end is fixedly connected with the friction plate 6; the side of the spring piece 9 is provided with a silencing plug 10, one end of the silencing plug 10 is fixedly connected with the connecting disc 5, and the other end of the silencing plug is propped against the friction disc 6.

The water pump shell 11 is provided with the belt pulley 12, one end of the belt pulley 12 is provided with a cavity, the friction disc 6 is arranged in the cavity, the surface of the friction disc 6 is close to the inner surface of the cavity, namely, a tiny gap exists between the friction disc 6 and the inner surface of the space, and the cavity of the belt pulley 12 is used for installing the connecting disc 5, the spring piece 9, the friction disc 6, the magnet fixing disc 4 and the magnet 3. The magnet fixing plate 4, the connecting plate 5 and the spring piece 9 are fixed together and are compactly arranged, so that the number of parts is reduced, meanwhile, the arrangement space of the magnet 3 is increased, the material consumption of the magnet fixing plate 4 is reduced, and the actual production cost is reduced.

When the iron core 13 is electrified, the magnet 3 is adsorbed, the spring piece 9 is pulled, the surface of the friction disc 6 is propped against the inner surface of the cavity of the belt pulley 12 and is tightly attached to the inner surface of the cavity of the belt pulley 12; when the iron core 13 is powered off, the magnetic force disappears, the magnet 3 is pulled back to the original position under the action of the elastic force of the spring piece 9, at the moment, the friction disc 6 is separated from the inner surface of the cavity of the belt pulley 12, and the contact or separation between the friction disc 6 and the inner surface of the cavity of the belt pulley 12 is controlled by the on-off of the iron core 13.

One end of the spring piece 9 connected with the connecting disc 5 is connected through a first rivet 7, and the other end of the spring piece 9 connected with the friction disc 6 is connected through a second rivet 8. The length of the first rivet 7 is larger than that of the second rivet 8, the length of the first rivet 7 is longer, and one end of the first rivet 7 penetrates through the magnet fixing disc 4, so that the length is longer, the stability of connection of all parts is guaranteed, and the connection is more fastened.

The width of the end portions of the first rivet 7 and the second rivet 8 is greater than the width of the middle portion. The rivet is installed by inserting one end of the rivet into the middle of the connected objects and then pressing the rivet at the other end using a tool to form a firm connection.

The two ends of the spring piece 9 are respectively connected with the connecting disc 5 and the friction disc 6, so that the setting quantity of bolts and nuts is reduced, the structure is more compact, all parts can be connected only through the first rivet 7 and the second rivet 8, the arrangeable space of the magnet 3 is enlarged, larger magnets can be arranged, the magnetic force is further improved, and the performance of the electromagnetic variable speed water pump is improved.

The rivet is a nail-shaped article, one end of which is provided with a cap, and in the riveting process, the parts to be riveted are connected by self deformation or interference. The width of the two ends of the first rivet 7 and the second rivet 8 is large, and the width of the rivet passing through the magnet fixing disc 4, the connecting disc 5 and the friction disc 6 is small, so that all parts can be fastened and connected, loosening is effectively avoided, and all parts can be matched and used better.

Through holes are formed in two ends of the spring piece 9, the through holes are used for penetrating through rivets, one through hole is used for penetrating through a first rivet to enable the spring piece 9 to be connected with the connecting disc 5, and the other through hole is used for penetrating through a second rivet to enable the spring piece 9 to be connected with the friction disc 6.

The middle part of spring leaf 9 is square structure, is semi-circular structure at square structure's both ends, and the through-hole setting of spring leaf 9 is on semi-circular structure.

As shown in fig. 2, the width of the noise reducing plug 10 at one end of the connection disc 5 is smaller than the width at one end of the friction disc 6. The larger width of the end of the noise reducing plug 10 that contacts the friction plate 6 increases the contact area of the noise reducing plug 10 with the surface of the friction plate 6, thereby better supporting the friction plate 6. The silencing plugs 10 are arranged in a plurality, and the encircling shaft-connection bearings 1 are arranged on the connecting disc 5, so that the friction disc 6 can be better supported, noise is avoided, and a better noise reduction effect is achieved.

As shown in fig. 3, the noise damper plug 10 is located on the side of the position where the spring piece 9 is connected to the friction plate 6. The spring piece 9 is connected with the friction disc 6 by adopting the second rivet 8, a certain interval is arranged between the silencing plug 10 and the second rivet 8, namely, the interval is arranged between the silencing plug 10 and one end of the spring piece 9, the silencing plug 10 can jack up the friction disc 6, the friction disc 6 can drive one end of the spring piece 9 to deviate, and then the spring piece 9 is inclined, so that elasticity is generated, and the magnet 3 can be pulled back rapidly.

The noise reduction plug 10 is made of rubber, the rubber can effectively perform buffering vibration reduction, the vibration reduction effect is achieved, abnormal sound is avoided due to metal collision, the noise reduction effect can be achieved through the noise reduction plug 10, the spring piece 9 can be inclined to generate elasticity, a gasket is not required to be additionally arranged to enable the spring piece 9 to be inclined, and the required arrangement space is greatly saved.

The spring pieces 9 are obliquely arranged, a plurality of spring pieces 9 are arranged, and the spring pieces 9 are arranged around the shaft-connected bearing 1. The spring piece 9 is used for separating the friction disc 6 from the belt pulley 12 when the iron core 13 is powered off, and the plurality of spring pieces 9 can enable the belt pulley 12 to be rapidly separated from the friction disc 6, so that the stress is uniform, and meanwhile, the mode switching of the electromagnetic variable speed water pump is smooth.

The other side of the magnet fixed disk 4 is provided with a magnet 3, and the magnet 3 is fixedly connected with the magnet fixed disk 4. When the iron core 13 is energized, the magnet 3 is attracted by the magnetic force generated by the iron core 13, and the magnet 3 is brought closer to the pulley 12, so that the friction disk 6 is brought into contact with the pulley 12.

One end of the water pump housing 11 is provided with a water pump impeller 2, and the water pump impeller 2 is sleeved on the shaft-connected bearing 1. The other end of the belt pulley 12 is provided with an iron core 13, and a coil 14 is arranged in the iron core 13; the iron core 13 is connected with the water pump shell 11 by bolts. The iron core 13 is used for fixing the coil and transmitting magnetic force after being electrified; the coil 14 may generate a magnetic field upon energization.

When the belt pulley 12 is driven by a vehicle engine to rotate in use, when the iron core 13 is not electrified, the friction disc 6 is separated from the surface of the belt pulley 12 under the action of the spring piece, the magnet 3 and the connecting disc 5 interact to generate an electromagnetic induction phenomenon, a magnetic field generated by electromagnetic induction drives the magnet fixing disc 4, and meanwhile, the driving shaft is connected with the bearing 1 to rotate, so that the water pump impeller 2 is finally driven to rotate along with the rotation.

When the iron core is electrified, the iron core 13 transmits magnetic force, the coil 14 generates a magnetic field, the friction disk 6 is attached to the surface of the belt pulley 12 under the action of electromagnetic force, the magnet fixing disk 4 drives the water pump shaft bearing shaft 1 to rotate, and finally the water pump impeller 2 is driven to run at full speed. After the iron core 13 is powered off, the friction disc 6 is pulled by the elastic force of the spring piece 9, so that the friction disc 6 is separated from the surface of the belt pulley 12.

While the foregoing description of the embodiments of the present utility model has been presented in conjunction with the drawings, it should be understood that it is not intended to limit the scope of the utility model, but rather, it is intended to cover all modifications or variations within the scope of the utility model as defined by the claims of the present utility model.

Claims

1. An electromagnetic variable-speed water pump is characterized by comprising a water pump shell, wherein a shaft-connected bearing is arranged in the water pump shell; one end of the shaft-connected bearing is provided with a water pump impeller, and the other end of the shaft-connected bearing is provided with a magnet fixing disc; one side of the magnet fixing plate is sequentially provided with a connecting plate, a spring piece and a friction plate, one end of the spring piece is fixedly connected with the connecting plate, and the other end of the spring piece is fixedly connected with the friction plate; the side of spring leaf sets up the amortization stopper, the one end and the connection pad fixed connection of amortization stopper, the other end top is on the friction disc.

2. The electromagnetic variable speed water pump of claim 1 wherein the water pump housing is provided with a pulley, one end of the pulley is provided with a cavity, the friction plate is arranged in the cavity, and the surface of the friction plate is close to the inner surface of the cavity.

3. The electromagnetic variable speed water pump of claim 1 wherein one end of the spring plate connected to the connecting disc is connected by a first rivet and the other end of the spring plate connected to the friction disc is connected by a second rivet.

4. An electromagnetic variable speed water pump as claimed in claim 3, wherein the length of the first rivet is greater than the length of the second rivet, and the width of the ends of the first rivet and the second rivet is greater than the width of the middle.

5. The electromagnetic variable speed water pump of claim 1 wherein the silencing plug has a smaller width at one end of the connecting disc than at one end of the friction disc.

6. The electromagnetic variable speed water pump of claim 1 wherein the noise damping plugs are located on the sides of the connection location of the spring plate and the friction plate.

7. An electromagnetic variable speed water pump as claimed in claim 1, wherein the spring plates are arranged diagonally, a plurality of spring plates are arranged, and the spring plates are arranged around the axle bearing.

8. The electromagnetic variable speed water pump of claim 1 wherein a magnet is disposed on the other side of the magnet holder, the magnet being fixedly connected to the magnet holder.

9. The electromagnetic variable-speed water pump as claimed in claim 1, wherein a water pump impeller is arranged at one end of the water pump housing, and the water pump impeller is sleeved on the shaft-connected bearing.

10. The electromagnetic variable-speed water pump as claimed in claim 2, wherein the other end of the belt pulley is provided with an iron core, and a coil is arranged in the iron core; the iron core is connected with the water pump shell through bolts.