CN215444334U

CN215444334U - Structure for reducing vibration of press by adding balance weight on crankshaft

Info

Publication number: CN215444334U
Application number: CN202122266823.7U
Authority: CN
Inventors: 党言庆; 李现康; 蒋芮; 甄浩然; 马琳; 毛成林
Original assignee: Qingdao Wanbao Compressor Co ltd
Current assignee: Qingdao Wanbao Compressor Co ltd
Priority date: 2021-09-17
Filing date: 2021-09-17
Publication date: 2022-01-07
Anticipated expiration: 2031-09-17

Abstract

The utility model relates to the technical field of piston compressors, in particular to a structure for reducing vibration of a press by adding a counterweight on a crankshaft, which comprises a reciprocating piston compressor and a new counterweight block, wherein the new counterweight block is sleeved with the lower end of the crankshaft and is provided with a new counterweight block anti-rotation surface and a new counterweight block positioning surface, the lower end of the crankshaft is provided with the crankshaft positioning surface and the crankshaft anti-rotation surface, the counterweight block and the installed position are positioned and rotated, the installation problem of the new counterweight block is solved, the connection in a cold pressing or hot sleeving mode is facilitated, the new counterweight block is installed below a rotor component, the gravity center of a machine core is reduced, the vibration is reduced, the structure is not limited by the space of the structure, and larger counterweight and rotation inertia force can be provided to balance reciprocating inertia force.

Description

Structure for reducing vibration of press by adding balance weight on crankshaft

Technical Field

The utility model relates to a piston compressor technical field especially relates to a structure that increases counter weight and reduce press vibration on bent axle.

Background

The reciprocating piston type compressor drives a crankshaft to rotate through a motor, a connecting rod swings to drive a piston, so that reciprocating linear motion is realized, in the motion process, unbalanced inertia force and moment can cause the vibration of a machine core, and the vibration of the machine core is transmitted to a shell through a pressure spring and an inner exhaust pipe. Unbalanced inertial forces are mainly classified into two types, one is rotational inertial force and the other is reciprocating inertial force. According to theoretical experience, the mass of the balancing weight is generally balanced by 30% -50% of reciprocating inertia force, and the reciprocating inertia force is mainly related to the mass of a piston, the mass of a piston pin, the mass of an elastic positioning pin and the reciprocating inertia mass of a connecting rod.

The existing method for increasing the balance weight is to mount a balancing weight on a crankshaft fan blade or an eccentric part of a crankshaft in a rivet riveting mode to reduce the balance reciprocating inertia force, but the space for mounting the balancing weight on the crankshaft fan blade or the eccentric part of the crankshaft is limited, meanwhile, the thickness of the balancing weight is limited by the distance between a connecting rod and a cylinder base, and the thickness of the mounting block cannot be too large, so that the mounted balancing weight has limited volume and small mass and is difficult to meet the requirement for balancing the reciprocating inertia force; meanwhile, the counterweight block is arranged above the reciprocating compressor, so that the gravity center of the reciprocating compressor is increased, and vibration is not reduced.

SUMMERY OF THE UTILITY MODEL

In order to solve the defects of the prior art, the utility model provides a structure for reducing the vibration of a press by adding a balance weight on a crankshaft.

The utility model adopts the following technical scheme: further, in the above-mentioned case,

the utility model provides a structure that increases counter weight and reduce press vibration on bent axle, includes reciprocating piston compressor and newly-increased weight, newly-increased weight cup joints with the bent axle lower extreme, newly-increased weight has newly-increased weight anti-rotation surface and newly-increased weight locating surface, the bent axle lower extreme is equipped with bent axle locating surface and bent axle anti-rotation surface.

Further, when newly calculating the pouring weight and cup jointing with the bent axle lower extreme, newly calculating the pouring weight and preventing the laminating of pouring weight anti-rotation surface and bent axle, prevent that newly calculating the pouring weight and bent axle from taking place relative rotation.

Further, when the new counterweight blocks are sleeved with the lower end of the crankshaft, the positioning surfaces of the new counterweight blocks are attached to the positioning surface of the crankshaft, so that the new counterweight blocks are fixedly connected with the crankshaft.

Further, the new counterweight block is connected with the crankshaft in a cold pressing or hot sleeve mode.

Further, the lower end of the crankshaft penetrates through a rotor component below a cylinder block of the reciprocating piston type compressor.

Furthermore, the new counterweight block is arranged below the rotor component and is sleeved with the lower end of the crankshaft.

Furthermore, the reciprocating piston type compressor is provided with crankshaft fan blades, and a balancing weight B is arranged below the crankshaft fan blades.

Furthermore, a balancing weight A is arranged above the crankshaft fan blades.

Furthermore, the balancing weight A is riveted with the crankshaft fan blades by rivets.

Furthermore, the reciprocating piston type compressor is provided with a connecting rod structure and is sleeved above the crankshaft.

Compared with the prior art, the utility model has the beneficial effects that:

1. the anti-rotation surface of the new counterweight block and the positioning surface of the new counterweight block are arranged on the new counterweight block, the crankshaft anti-rotation surface and the crankshaft positioning surface are arranged at the lower end of the crankshaft, the crankshaft and the new counterweight block are adopted to increase the positioning and anti-rotation design, the application of a hot jacket or cold pressing mode is utilized, the mass production is favorably realized, the relative movement of the crankshaft and the new counterweight block can be effectively prevented, and the positioning and anti-rotation effects are realized.

2. The new counterweight block is arranged below the rotor component, so that the center of gravity of the movement of the reciprocating piston type compressor is reduced, and the vibration of the machine is effectively reduced.

3. The new counterweight block is arranged below the rotor component and is sleeved with the lower end of the crankshaft without being limited by space, the diameter of the new counterweight block is increased, the rotating inertia force provided by the new counterweight block is further increased, and the reciprocating inertia force is finally balanced.

4. The new counterweight block has simple structure, convenient installation and design and easy realization of mass production.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the utility model, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the utility model and together with the description serve to explain the utility model and not to limit the utility model.

FIG. 1 is a schematic view of a prior art reciprocating piston compressor with counterweight added according to the background of the disclosure;

FIG. 2 is a schematic diagram of the present invention of adding new counterweight blocks to a reciprocating piston compressor;

FIG. 3 is a schematic view of a crankshaft structure according to the present invention;

FIG. 4 is a schematic diagram of a new weight distribution of the present invention;

in the figure: 1. a cylinder block; 2. crankshaft fan blades; 3. a balancing weight A; 4. riveting; 5. a rotor component; 6. a balancing weight B; 7. a connecting rod; 8. a crankshaft; 9. a crankshaft locating surface; 10. a crankshaft anti-rotation surface; 11. newly allocating the weight blocks; 12. newly allocating weight anti-rotation surfaces; 13. and a new counterweight block positioning surface.

Detailed Description

The utility model is further described with reference to the following figures and examples.

It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the utility model as claimed. 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 invention belongs.

Examples

Referring to fig. 1-4, an embodiment of the present invention is shown: fig. 1 is a schematic structural diagram of an existing reciprocating piston compressor for adding a counterweight, a counterweight block A3 is riveted on a crankshaft fan blade 2 through a rivet 4 and is limited by a space structure of the reciprocating piston compressor, the diameter of the counterweight block A3 is limited by the distance from a cylinder seat and cannot be too large, so that the mass of the counterweight which can be added is small, the formed rotary inertia force is small, the reciprocating inertia force is difficult to balance, and meanwhile, the counterweight block is installed above the cylinder seat, has a high gravity center and is not beneficial to reducing vibration.

The utility model provides a structure for reducing the vibration of a press by adding a balance weight on a crankshaft on the basis of the prior art, which comprises a reciprocating piston type compressor and a new counterweight 11, wherein the new counterweight 11 is provided with a new counterweight anti-rotation surface 12 and a new counterweight positioning surface 13, the lower end of the crankshaft 8 is provided with a crankshaft positioning surface 9 and a crankshaft anti-rotation surface 10, the new counterweight 11 is sleeved with the lower end of the crankshaft 8, when the new counterweight 11 is sleeved with the lower end of the crankshaft 8, the new counterweight anti-rotation surface 12 is attached to the crankshaft anti-rotation surface 10 to prevent the new counterweight 11 and the crankshaft 8 from rotating relatively, the new counterweight positioning surface 13 is attached to the crankshaft positioning surface 9 to realize the fixed connection of the new counterweight 11 and the crankshaft 8, the connection mode is that the new counterweight 9 and the crankshaft 8 are connected in a cold pressing or hot sleeving mode, the design of positioning and rotation prevention is favorable for solving the installation problem of the new counterweight 11, by adding an anti-rotation and positioning design, the accuracy and location of the mounting of the new counterweight 11 on the crankshaft can be ensured.

The lower end of the crankshaft 8 passes through the rotor part 5 below the cylinder block of the reciprocating piston compressor, so the new counterweight 11 is arranged below the rotor part 5 and is sleeved with the lower end of the crankshaft 8. The new counterweight 11 installed below the rotor component 5 is not limited by the space of the reciprocating piston compressor structure at the upper part, the characteristic of large radius of the rotor component 5 is utilized, the new counterweight 11 with large radius of rotation can be adopted to increase the rotating inertia force and finally balance the reciprocating inertia force, the existing reciprocating piston compressor is provided with a crankshaft fan blade 2, a counterweight block B6 is arranged below the crankshaft fan blade 2, a counterweight block A3 is arranged above the crankshaft fan blade, the counterweight block A3 is riveted with the crankshaft fan blade 2 by rivets 4, the structure of the connecting rod 7 is also provided and sleeved above the crankshaft 8, the existing counterweight block A3 is also limited, the new counterweight 11 is directly arranged below the rotor component 5 of the existing reciprocating piston compressor and is connected with the lower end of the crankshaft 8 in a cold pressing or hot sleeving mode, the new counterweight 11 is added at the lower part of the crankshaft 8 to reduce the gravity center of the machine core, the new counterweight block 11 has simple structure, convenient installation and design and easy realization of mass production.

It should be noted that the above-mentioned embodiments are only preferred embodiments of the present invention, and the present invention is not limited thereto, and although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications can be made to the technical solutions described in the foregoing embodiments or equivalent substitutions for some technical features, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. The utility model provides a structure that increases counter weight and reduce press vibration on bent axle which characterized in that, includes reciprocating piston compressor and newly-increased weight, newly-increased weight cup joints with the bent axle lower extreme, newly-increased weight has newly-increased weight anti-rotation face and newly-increased weight locating surface, the bent axle lower extreme is equipped with bent axle locating surface and bent axle anti-rotation face.

2. The structure for reducing vibration of a press machine by adding a counterweight to a crankshaft as claimed in claim 1, wherein when said new counterweight is received by the lower end of the crankshaft, the anti-rotation surface of the new counterweight abuts against the anti-rotation surface of the crankshaft, preventing relative rotation between the new counterweight and the crankshaft.

3. The structure for reducing vibration of a press machine by adding the counterweight to the crankshaft as claimed in claim 1, wherein when the new counterweight is sleeved on the lower end of the crankshaft, the positioning surface of the new counterweight is attached to the positioning surface of the crankshaft, so that the new counterweight is fixedly connected with the crankshaft.

4. The structure for reducing vibration of a press with the addition of a counterweight on the crankshaft as recited in claim 1, wherein said new counterweight is connected to the crankshaft in a cold press or a hot sleeve.

5. The structure for reducing vibration of a press with the addition of the counterweight on the crankshaft as recited in claim 1, wherein the lower end of the crankshaft passes through the rotor part below the cylinder block of the reciprocating piston compressor.

6. The structure for reducing vibration in a press having a crankshaft as set forth in claim 1, wherein said new counterweight is disposed below said rotor member and is journalled to the lower end of the crankshaft.

7. The structure of claim 1, wherein the reciprocating piston compressor has crankshaft blades, and a weight B is disposed under the crankshaft blades.

8. The structure of claim 7, wherein a weight block A is disposed above the blades of the crankshaft.

9. The structure for reducing vibration of a press machine by adding the balance weight on the crankshaft as claimed in claim 8, wherein the balance weight block A is riveted with the blades of the crankshaft by rivets.

10. The structure for reducing vibration of a compressor by adding the balance weight on the crankshaft as claimed in claim 1, wherein said reciprocating piston compressor has a connecting rod structure sleeved above the crankshaft.