CN214999267U

CN214999267U - Eccentric device

Info

Publication number: CN214999267U
Application number: CN202120457028.3U
Authority: CN
Inventors: 郭永; 蔡靖; 钟勋; 郭帅; 徐清清
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-03-03
Filing date: 2021-03-03
Publication date: 2021-12-03
Anticipated expiration: 2031-03-03

Abstract

The utility model provides an eccentric device, including eccentric block one and eccentric block two, its characterized in that: the eccentric block I and the eccentric block II are coaxially arranged, the eccentric device further comprises a first driver, the first driver drives the eccentric block I to rotate, a gap is formed between the eccentric block I and the eccentric block II, the gap comprises a gap I and a gap II, a limiting block is arranged on the gap I, the limiting block is a limiting block I and a limiting block II respectively, the limiting block I and the limiting block II are fixedly connected with the eccentric block I and the eccentric block II respectively, the eccentric block I drives the eccentric block II to rotate symmetrically and synchronously, the eccentric device further comprises a second driver, and the second driver is used for driving the eccentric block II. The utility model relates to an eccentric device, steady, safety during the start-up, the during operation vibration is effectual.

Description

Eccentric device

Technical Field

The utility model relates to an eccentric device's technical field, in particular to synchronous pivoted eccentric device.

Background

The eccentric device is generally applied to the technical field with vibration effect, such as a vibration hammer, an automobile, an electric tool, a mobile phone and the like, and the vibration effect is achieved by utilizing asymmetry between eccentric blocks.

However, the existing eccentric device adopts a driver, such as CN203868238U, named as a driving assembly of the vibration hammer with adjustable eccentric moment, which includes a vibration hammer casing, and a main rotating shaft and an auxiliary rotating shaft linked with each other and arranged on the vibration hammer casing, the main rotating shaft is driven by a motor, the main rotating shaft is driven by the motor, the rotating speeds of the main rotating shaft and the auxiliary rotating shaft are the same, and the rotating directions are opposite, the main axis of rotation and vice axis of rotation on overlap respectively and be equipped with along with axle pivoted eccentric block, the eccentric block include first eccentric block and the second eccentric block that circumference was arranged, the first eccentric block of main axis of rotation links synchronous rotation with the first eccentric block of vice axis of rotation mutually, the second eccentric block of main axis of rotation links synchronous rotation with the second eccentric block of vice axis of rotation mutually, still be provided with the distance adjustment mechanism who adjusts axial distance between first eccentric block and the second eccentric block in the main axis of rotation. Therefore, when the technical scheme is used for adjusting the eccentricity, one driver is adopted, the distance adjusting mechanism is used for controlling the relative position between the two eccentric blocks, the synchronization is difficult to form in the operation process, and the vibration effect is weak.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome above-mentioned prior art not enough, provide an eccentric device, steady, safety during the start-up, the during operation vibration is effectual.

In order to achieve the above object, the utility model provides an eccentric device, including eccentric block one and eccentric block two, its characterized in that: the eccentric block I and the eccentric block II are coaxially arranged, the eccentric device further comprises a first driver, the first driver drives the eccentric block I to rotate, a gap is formed between the eccentric block I and the eccentric block II, the gap comprises a gap I and a gap II, a limiting block is arranged on the gap I, the limiting block is a limiting block I and a limiting block II respectively, the limiting block I and the limiting block II are fixedly connected with the eccentric block I and the eccentric block II respectively, the eccentric block I drives the eccentric block II to rotate symmetrically and synchronously, the eccentric device further comprises a second driver, and the second driver is used for driving the eccentric block II.

The first driver is started, the first driver drives the first eccentric block to rotate, the first eccentric block and the second eccentric block are symmetrically and synchronously rotated under the action of the limiting block, smooth, stable and safe starting is realized, the second driver is started in a delayed mode, the second driver drives the second eccentric block to rotate, the catching-up is accelerated until the second driver is overlapped with the first eccentric block, vibration working is generated, the vibration effect is improved, and the working requirement is met; the second actuator is a hydraulic motor capable of stable idling.

Preferably, the eccentric device further comprises a driven gear and a driving gear, the driven gear is fixedly connected with the second eccentric block and meshed with the driving gear, and the second driver is in driving connection with the driving gear so as to drive the second eccentric block; the gear is driven to be connected, so that the rotation is stable, reliable and safe, and the requirement of large-scale operation is met.

As preferred, the stopper is the arc sand grip, carries out the spacing setting of symmetry respectively to eccentric block one and eccentric block two through the arc sand grip, and its simple structure easily processes, and the practicality is strong.

Preferably, the limiting block is tightly attached to the main shaft; the inner diameter of a limiting block arranged on the arc-shaped convex strip is matched with the main shaft and can be clamped on the outer surface of the main shaft, and the limiting block can be attached to the main shaft to rotate when the main shaft runs, so that the stability is improved, and the service life is prolonged.

Preferably, the first limiting block and the eccentric block are integrally arranged, and the second limiting block and the eccentric block are integrally arranged.

The utility model has the advantages that: through setting up two independent drivers and eccentric block one and eccentric block two, eccentric block one and the coaxial setting of eccentric block two, first driver work during the start, eccentric block one and eccentric block two are symmetrical synchronous rotation through the stopper, keep holistic symmetrical stability, power control is relatively weak with traditional eccentric device, it is fast to realize the boot speed, it is little to start the burden, the security performance is high, in operation, time delay starts the second driver and drives two accelerated motion of eccentric block and pursue until overlapping with eccentric block one, the vibration effect progressively strengthens, each part stable performance, the vibration effect is good, the stable vibration, safety.

The features and advantages of the present invention will be described in detail by embodiments with reference to the accompanying drawings.

Drawings

Fig. 1 is a schematic perspective view of a first eccentric device according to an embodiment of the present invention.

Fig. 2 is a schematic perspective view of the embodiment of the present invention in operation.

Fig. 3 is a schematic diagram of the exploded structure of fig. 2.

Fig. 4 is a first schematic structural diagram of the embodiment of the present invention at startup.

Fig. 5 is a schematic structural diagram ii when the embodiment of the present invention is started.

Fig. 6 is a first schematic structural diagram of the embodiment of the present invention in operation.

Fig. 7 is a schematic structural diagram ii of the embodiment of the present invention during operation.

Fig. 8 is a schematic diagram of the exploded structure of fig. 6.

In the figure: 1-box body, 2-first eccentric device, 3-second eccentric device, 21-first driver, 22-main shaft I, 23-driving gear I, 24-driven gear I, 25-eccentric block I, 26-eccentric block II, 31-second driver, 32-main shaft II, 33-driving gear II, 34-driven gear II, 35-eccentric block III, 36-eccentric block IV, 37-limiting block I, 38-limiting block II and 5-main shaft bearing.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clear, the present invention is further described in detail through the accompanying drawings and embodiments. It should be understood, however, that the description herein of specific embodiments is only intended to illustrate the invention and not to limit the scope of the invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.

As shown in fig. 1 to 8, the present embodiment proposes an eccentric device, and for more detailed and clear explanation of the structure and application of the eccentric device, the present embodiment exemplifies the application of the eccentric device to a resonance-free device of a vibratory hammer, which includes a case and two eccentric devices, a first eccentric device 2 and a second eccentric device 3,

the first eccentric device 2 comprises a first driver 21, a first main shaft 22, a first driving gear 23, a first driven gear 24, a first eccentric block 25 and a second eccentric block 26, the first driver 21 is installed on one side of the box body 1 and fixedly connected with the first main shaft 22, the first main shaft 22 is installed in the box body 1 through a main shaft bearing 5, the first main shaft 22, the first driving gear 23 and the first eccentric block 25 are integrally arranged, the first driven gear 24 and the second eccentric block 26 are integrally arranged, and the first driven gear 24 is installed on the first main shaft 22 through a bearing;

the second eccentric device 3 comprises a second driver 31, a second main shaft 32, a second driving gear 33, a second driven gear 34, a third eccentric block 35 and a fourth eccentric block 36, the second driver 31 is installed on the other side of the box body 1 and fixedly connected with the second main shaft 32, the second main shaft 32 is installed in the box body 1 through a main shaft bearing 5, the second main shaft 32, the second driving gear 33 and the third eccentric block 35 are integrally arranged, the second driven gear 34 and the fourth eccentric block 36 are integrally arranged, and the second driven gear 34 is installed on the second main shaft 32 through a bearing.

More specifically, the first driving gear 23 is meshed with the second driven gear 34, and the second driving gear 33 is meshed with the first driven gear 24; thus, when the first driver 21 is started, the first eccentric block 25, the second eccentric block 26, the third eccentric block 35 and the fourth eccentric block 36 can be driven to rotate simultaneously.

In order to avoid the vibration when the device is just started, gaps are arranged between the first eccentric block 25 and the second eccentric block 26 and between the third eccentric block 35 and the fourth eccentric block 36, the gaps are respectively a first gap and a second gap, a first limit block 37 and a second limit block 38 are arranged on the first gap, the first limit block 37 and the second limit block 38 which are arranged between the first eccentric block 25 and the second eccentric block 26 are fixedly connected with the first eccentric block 25 and the second eccentric block 26 respectively, and the first limit block 37 and the second limit block 38 which are arranged between the third eccentric block 35 and the fourth eccentric block 36 are fixedly connected with the third eccentric block 35 and the fourth eccentric block 36 respectively, so that two groups of symmetrical synchronous rotation can be realized when the first driver 21 is started respectively, and the resonance-free effect during the starting is realized.

In order to realize the vibration during the operation, the second driver 31 is set to be started in a delayed manner compared with the first driver 21, at the moment, the second driver 31 drives the second driving gear 33 and the third eccentric block 35 to rotate in an accelerated manner, so as to drive the first driven gear 24 and the second eccentric block 26 to rotate in an accelerated manner, and the driving is continued until the third eccentric block 35 is overlapped with the fourth eccentric block 36, and the second eccentric block 26 is overlapped with the first eccentric block 25 to generate the vibration to do work.

As a preferred embodiment, the first and

second actuators

21, 31 are hydraulic motors.

The working process of the utility model is that the first driver 21 is started, at this moment, the first main shaft 22, the first driving gear 23 and the first eccentric block 25 rotate to drive the second driven gear 34 and the fourth eccentric block 36 to synchronously and symmetrically rotate, the first limit block 37 fixedly connected with the first eccentric block 25 drives the second eccentric block 26 to symmetrically and synchronously rotate, the first limit block 37 fixedly connected with the fourth eccentric block 36 drives the third eccentric block 35 to symmetrically and synchronously rotate to realize resonance-free starting, the second driver 31 is started in a delayed manner, at the moment, the second main shaft 32, the second driving gear 33 and the third eccentric block 35 rotate to drive the second eccentric block 26 to rotate, the catching-up is accelerated until the third eccentric block 35 and the fourth eccentric block 36 are combined and overlapped, and the second eccentric block 26 and the first eccentric block 25 are overlapped to realize vibration working during working and stop, the second actuator 31 is stopped first, and then the first actuator 21 is stopped, so that resonance avoidance at the time of shutdown is achieved.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modification, equivalent replacement or improvement made within the spirit and principle of the present invention should be included in the present invention.

Claims

1. An eccentric device comprises a first eccentric block and a second eccentric block, and is characterized in that: the first eccentric block and the second eccentric block are coaxially arranged,

the eccentric device also comprises a first driver which drives the eccentric block to rotate,

a gap is arranged between the first eccentric block and the second eccentric block, the gap comprises a first gap and a second gap, a limiting block is arranged on the first gap, the limiting blocks are respectively a first limiting block and a second limiting block, the first limiting block and the second limiting block are respectively and fixedly connected with the first eccentric block and the second eccentric block, so that the first eccentric block drives the eccentric blocks to symmetrically and synchronously rotate,

the eccentric device also comprises a second driver, and the second driver is used for driving the second eccentric block.

2. The eccentric assembly of claim 1, wherein: the eccentric device also comprises a driven gear and a driving gear,

the driven gear is fixedly connected with the eccentric block II and is meshed with the driving gear,

the second driver is in driving connection with the driving gear, so that the second eccentric block is driven.

3. The eccentric assembly of claim 1, wherein: the limiting block is an arc-shaped convex strip.

4. The eccentric assembly of claim 3, wherein: the limiting block is tightly attached to the main shaft.

5. The eccentric assembly of claim 1, wherein: the first limiting block and the eccentric block are integrally arranged, and the second limiting block and the eccentric block are integrally arranged.