CN217502446U

CN217502446U - Balance weight and crankshaft

Info

Publication number: CN217502446U
Application number: CN202221311902.3U
Authority: CN
Inventors: 胡衍开; 吴永恒; 庄迷路; 费世远
Original assignee: Huangshi Donper Compressor Co Ltd
Current assignee: Huangshi Donper Compressor Co Ltd
Priority date: 2022-05-26
Filing date: 2022-05-26
Publication date: 2022-09-27
Anticipated expiration: 2032-05-26

Abstract

The application provides a balancing piece and bent axle relates to bent axle technical field. The balance block is applied to a crankshaft and comprises a first balance part, a second balance part and a connecting part, wherein one end of the connecting part is connected with the first balance part, and the other end of the connecting part is connected with the second balance part; a clamping space is formed between the first balance part and the second balance part and used for clamping the balance bump on the crankshaft, and the connecting part is connected with the balance bump. The balance block is convenient to be connected with the balance lug, an additional connecting piece is not needed, the connecting efficiency is high, the connection is reliable, and the cost is low.

Description

Balance weight and crankshaft

Technical Field

The utility model relates to a bent axle technical field particularly, relates to a balancing piece and bent axle.

Background

In the prior art, the balance weight on the crankshaft is usually connected to the balance bump in a rivet manner, and a plurality of rivets are required to be arranged for each balance weight connection, so as to realize the connection reliability. This type of connection requires a large number of rivets, is costly, inefficient to connect, and cannot be reused.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a balancing piece and bent axle need not to use extra connecting piece, and connection efficiency is high, and is with low costs to can used repeatedly.

The embodiment of the utility model is realized like this:

in a first aspect, the present invention provides a balance block, which is applied to a crankshaft, and includes a first balance portion, a second balance portion, and a connecting portion, wherein one end of the connecting portion is connected to the first balance portion, and the other end is connected to the second balance portion;

a clamping space is formed between the first balance part and the second balance part and used for clamping the balance bump on the crankshaft, and the connecting part is connected with the balance bump.

In an optional embodiment, a clamping groove is formed on the balancing protrusion, and the connecting portion is clamped in the clamping groove.

In an alternative embodiment, the first balance portion includes a first surface facing the second balance portion, the second balance portion includes a second surface facing the first balance portion, and the first surface and the second surface form the retaining space therebetween.

In an alternative embodiment, the balancing bump includes a third surface and a fourth surface that are oppositely disposed, the third surface is attached to the first surface, and the fourth surface is attached to the second surface.

In an alternative embodiment, the card slot extends through the third surface and the fourth surface; the connecting part comprises a first side surface, a second side surface and an assembling surface facing the clamping space, and the first side surface and the second side surface are arranged oppositely and are respectively connected with the assembling surface;

the assembling surface is attached to the bottom wall of the clamping groove, and the first side surface and the second side surface are respectively clamped with the side wall of the clamping groove.

In an alternative embodiment, the connecting portion includes an intermediate connecting member and an end connecting member, the intermediate connecting member is connected to the middle of the first balance portion and the second balance portion, the end connecting member is connected to the end of the first balance portion and the second balance portion, and the intermediate connecting member is disposed in the slot.

In an alternative embodiment, the first balance portion, the second balance portion and the connecting portion are integrally formed.

In an alternative embodiment, the connecting portion is at an angle of 90 degrees to the first and second balance portions, respectively.

In an alternative embodiment, the connection part and the first balance part are connected by a circular arc transition connection, and the connection part and the second balance part are connected by a circular arc transition connection.

In a second aspect, the present invention provides a crankshaft comprising a crankshaft body, a balancing mass disposed on the crankshaft body and a balancing mass as in any one of the previous embodiments, wherein the balancing mass is connected to the balancing mass.

The embodiment of the utility model provides a beneficial effect is:

the embodiment of the utility model provides a balancing piece, the both ends of connecting portion are connected with first balancing portion and second balancing portion respectively, form the card between first balancing portion and the second balancing portion and hold the space, adopt frame rack structure promptly, be convenient for with bent epaxial balanced lug be connected, this connected mode need not to adopt extra connecting piece, the connection efficiency is high, has practiced thrift the connecting piece cost to can used repeatedly, improve product utilization.

The embodiment of the utility model provides a crankshaft, including foretell balancing piece, the balancing piece is connected conveniently with the balanced lug on the bent axle body, and connection efficiency is high, need not to use connecting pieces such as rivet, practices thrift the cost to can used repeatedly, improve product utilization.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural diagram of a crankshaft provided in an embodiment of the present invention;

fig. 2 is an exploded schematic view of a balance weight of a crankshaft according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a balance weight according to an embodiment of the present invention.

Icon: 100-balance weight; 110-a first balance; 111-a first surface; 120-a second balance; 121-a second surface; 130-a connecting portion; 131-an intermediate connector; 133-end connectors; 101-a chucking space; 200-a crankshaft; 210-a crankshaft body; 220-a balancing bump; 221-card slot; 223-a third surface; 225-fourth surface.

Detailed Description

To make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the attached drawings in the embodiments of the present invention are combined to clearly and completely describe the technical solution in the embodiments of the present invention, and obviously, the described embodiments are part of the embodiments of the present invention, rather than all embodiments. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The existing balance blocks are mostly flat-shaped and are fixedly arranged on the crankshaft through rivets or screws and the like, the number of required rivets or screws is large, the cost is high, the installation efficiency is low, and the balance blocks cannot be reused. In order to overcome the defects of the prior art, the present application provides an improved balance weight 100, which is easy to install, improves the connection efficiency, reduces the cost, and can be reused.

Referring to fig. 1 to 3, the present embodiment provides a balance weight 100 applied to a crankshaft 200, where the balance weight 100 includes a first balance portion 110, a second balance portion 120, and a connecting portion 130, one end of the connecting portion 130 is connected to the first balance portion 110, and the other end is connected to the second balance portion 120; the first balance part 110 and the second balance part 120 form a holding space 101 therebetween, the holding space 101 is used for holding the balance protrusion 220 on the crankshaft 200, and the connecting part 130 is connected with the balance protrusion 220. The improved balance block 100 is integrally in a frame type structure, is convenient to clamp with the balance bump 220, is reliable in fixation, does not need to use an additional connecting piece in the connecting mode, is convenient to connect, has high connecting efficiency and can be repeatedly used.

The balance bump 220 is provided with a slot 221, and the connecting portion 130 is clamped in the slot 221. In this embodiment, the connection portion 130 includes an intermediate connection member 131 and an end connection member 133 that are spaced apart from each other, the intermediate connection member 131 is connected to the middle portions of the first balance portion 110 and the second balance portion 120, the end connection member 133 is connected to the end portions of the first balance portion 110 and the second balance portion 120, and the intermediate connection member 131 is disposed in the slot 221. It is understood that the number of the end connectors 133 is two and is respectively disposed at both ends of the first balance part 110 and the second balance part 120, and of course, in other alternative embodiments, the number of the middle connectors 131 may be more than one and is not particularly limited herein.

Alternatively, the first balance part 110 and the second balance part 120 are oppositely arranged, the first balance part 110 includes a first surface 111 facing the second balance part 120, the second balance part 120 includes a second surface 121 facing the first balance part 110, and the first surface 111 and the second surface 121 form the chucking space 101 therebetween. The shape and size of the holding space 101 are matched with the shape and size of the balancing lug 220 on the crankshaft body 210. In this embodiment, the first balance portion 110 and the second balance portion 120 have a semicircular arc shape. Correspondingly, the balancing protrusion 220 on the crankshaft body 210 includes a third surface 223 and a fourth surface 225 which are oppositely arranged, the third surface 223 is attached to the first surface 111, and the fourth surface 225 is attached to the second surface 121. The size and shape of the first balancing part 110 and the second balancing part 120 may be flexibly designed according to the size and shape of the balancing protrusion 220 in an actual product, and are not particularly limited herein.

The clamping groove 221 is formed on the outer peripheral surface of the balancing bump 220 and penetrates through the third surface 223 and the fourth surface 225; the connecting portion 130 includes a first side surface and a second side surface, which are opposite to each other and are respectively connected to the mounting surface, and a mounting surface facing the holding space 101; in the process of connecting the balance weight 100 and the balance bump 220, the assembly surface is attached to the bottom wall of the slot 221, and the first side surface and the second side surface are respectively clamped with the side walls of the slot 221. It can be understood that the middle connecting member 131 is clamped into the clamping groove 221, and the middle connecting member 131 is tightly fitted with the groove wall (including the bottom wall and the side wall) of the clamping groove 221, so as to achieve a reliable fixing effect. The middle connector 131 and the engaging groove 221 may be in an interference fit or a transition fit, and similarly, the balancing protrusion 220 and the engaging space 101 formed on the balancing block 100 may also be in an interference fit or a transition fit, such that the upper surface of the balancing protrusion 220 is tightly attached to the first surface 111, and the lower surface of the balancing protrusion 220 is tightly attached to the second surface 121. In the assembling process, the balance protrusion 220 may be pressed into the retaining space 101 by stamping or riveting, and the middle connector 131 is automatically pressed into the slot 221.

This assembly method need not to adopt extra connecting piece, practices thrift the cost of connecting piece, and adopts punching press or riveting installation, and is swift convenient, efficient, and the connection back structure is reliable, does not have the risk of droing, can also used repeatedly, improves product utilization.

Optionally, after the balancing protrusion 220 is pressed into the retaining space 101, the end surface of the balancing protrusion 220 may be abutted against the end connector 133, so as to further improve the retaining effect and improve the reliability and stability of the connection structure. It should be understood that the middle connecting member 131 is connected to the side surfaces of the first balancing part 110 and the second balancing part 120, respectively, and the end connecting member 133 is connected to the end surfaces of the first balancing part 110 and the second balancing part 120, respectively, so that the end surfaces of the balancing protrusions 220 are supported against the end connecting member 133 after riveting or punching.

In this embodiment, the first balance part 110, the second balance part 120, and the connection part 130 are integrally formed. First balanced portion 110 and second balanced portion 120 are parallel to each other, and connecting portion 130 is 90 degrees angular settings with first balanced portion 110 and second balanced portion 120 respectively to can closely laminate with balanced lug 220 after guaranteeing the riveting, improve the stability of structure after the riveting, the assembly precision is higher. Optionally, the connection portion 130 and the first balance portion 110 are connected by an arc transition connection, and the connection portion 130 and the second balance portion 120 are connected by an arc transition connection. The arrangement is convenient for process manufacturing, is beneficial to relieving stress concentration and improving the structural strength and reliability.

The embodiment of the present invention further provides a crankshaft 200, which includes a crankshaft body 210, a balance bump 220 disposed on the crankshaft body 210, and the balance weight 100 as in any one of the previous embodiments, wherein the balance bump 220 is connected to the balance weight 100. Optionally, the balance weight 100 has a holding space 101 formed by the first balance portion 110, the second balance portion 120 and the connecting portion 130, and the balance bump 220 on the crankshaft body 210 is pressed into the holding space 101, including but not limited to stamping or riveting, so that the balance bump 220 and the balance weight 100 are tightly attached together, and are tightly fitted, and the structure is reliable and the firmness is good; the assembly is quick and convenient, the efficiency is high, and the cost is saved. Because the press-in type card is adopted to clamp and fix, a connecting piece is not needed, the connecting piece can be repeatedly used, and the product utilization rate is improved.

The embodiment of the utility model provides a balancing piece 100 and bent axle 200, its assembly process is as follows:

the balance bump 220 on the crankshaft body 210 is clamped into the clamping space 101 of the balance weight 100 by riveting or punching, that is, the balance weight 100 is sleeved on the balance bump 220, and after assembly, the middle connecting piece 131 is tightly matched with the clamping groove 221, the first surface 111 is tightly attached to the third surface 223, and the second surface 121 is tightly attached to the fourth surface 225, so that reliable fixation is realized. Alternatively, the end surface of the balancing protrusion 220 may be abutted against the end connector 133 to further improve the retaining effect and prevent the balancing weight 100 from falling off and separating.

To sum up, the embodiment of the present invention provides a balance weight 100 and a crankshaft 200, which have the following advantages:

the embodiment of the utility model provides a balancing piece 100, the both ends of connecting portion 130 are connected with first balancing portion 110 and second balancing portion 120 respectively, form the card between first balancing portion 110 and the second balancing portion 120 and hold space 101, adopt frame rack structure promptly, be convenient for with bent axle 200 on the balanced lug 220 be connected, this connected mode need not to adopt extra connecting piece, connection efficiency is high, has practiced thrift the connecting piece cost to can used repeatedly, improve product utilization.

The embodiment of the utility model provides a crankshaft 200, including foretell balancing piece 100, balancing piece 100 is connected conveniently with balanced lug 220 on the bent axle body 210, and the connection efficiency is high, need not to use connecting pieces such as rivets, practices thrift the cost to can used repeatedly, improve product utilization.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A balance weight is characterized by being applied to a crankshaft and comprising a first balance part, a second balance part and a connecting part, wherein one end of the connecting part is connected with the first balance part, and the other end of the connecting part is connected with the second balance part;

2. The balance weight of claim 1, wherein the balance protrusion has a slot, and the connecting portion is retained in the slot.

3. The weight of claim 2, wherein the first counterweight includes a first surface facing the second counterweight, the second counterweight includes a second surface facing the first counterweight, and the first surface and the second surface form the capture space therebetween.

4. The weight of claim 3, wherein the balancing tab includes third and fourth oppositely disposed surfaces, the third surface engaging the first surface and the fourth surface engaging the second surface.

5. The weight of claim 4, wherein the slot extends through the third surface and the fourth surface; the connecting part comprises a first side surface, a second side surface and an assembling surface facing the clamping space, and the first side surface and the second side surface are arranged oppositely and are respectively connected with the assembling surface;

6. The balance weight of claim 2, wherein the connecting portion includes an intermediate connecting member and an end connecting member, the intermediate connecting member is connected to the middle of the first balance portion and the second balance portion, the end connecting member is connected to the ends of the first balance portion and the second balance portion, and the intermediate connecting member is disposed in the engaging groove.

7. The weight of claim 1, wherein the first balance portion, the second balance portion, and the connecting portion are integrally formed.

8. The weight of claim 1, wherein the connecting portion is at a 90 degree angle to the first and second balance portions, respectively.

9. The weight of any of claims 1-8, wherein the connection of the connecting portion to the first balance portion and the connection of the connecting portion to the second balance portion are all in a circular arc transition connection.

10. A crankshaft comprising a crankshaft body, a balancing mass provided on the crankshaft body, and a balancing mass according to any one of claims 1 to 9, the balancing mass being connected to the balancing mass.