External concrete vibrator adopting inclined eccentric block

Abstract

A device for automatically adjusting centrifugal force of an external vibrator belongs to the technical field of building machinery. According to the technical scheme, inclined eccentric blocks in an inclined disc shape are manufactured, installed at the two ends of a motor shaft of the external concrete vibrator respectively and fixed through keys, a wedge-shaped gasket I and a wedge-shaped gasket II are arranged on the left side and the right side of each inclined eccentric block in a cushioned mode respectively, and the shaft end is axially fixed through an elastic clamping ring for a shaft; bearing seats are fixed to the two ends of a machine shell of the vibrator respectively and connected with the machine shell through first thread pairs, and first annular ventilation holes are formed in the bearing seats. End covers are fixed outside the two bearing seats respectively and connected with the machine shell and the bearing seats through thread pairs II, and ventilation holes II which are evenly distributed in the circumference are formed in the end covers. The utility model has the beneficial effects that the uniquely designed inclined disc-shaped inclined eccentric block has the function of a fan, can forcibly dissipate heat, and is matched with the ventilation holes on the bearing seat and the end cover, so that the temperature rise of the vibrator motor is greatly reduced, the defects of the existing external vibrator concrete are overcome, the service life is prolonged, the design is novel, and safety and reliability are realized.

Description

Technical Field

[0001] An external concrete vibrator using an inclined eccentric block belongs to the field of construction machinery technology. Background Technology

[0002] With the sustained and rapid development of my country's national economy, external concrete vibrators are increasingly widely used in construction, transportation, water conservancy, and other fields. Existing external concrete vibrators typically have eccentric blocks fixed at both ends of the motor. During operation, the eccentric blocks generate centrifugal force, which is the excitation force for compacting the concrete component. This excitation force is transmitted to the concrete component, creating a disturbance force. After a period of vibration, the voids within the concrete are filled, and the concrete component becomes compacted. During this compaction process, the load on the external concrete vibrator increases, generating a large amount of heat, which significantly increases the temperature rise of the vibrator motor. Since the vibrator end caps are sealed, heat dissipation deteriorates, severely affecting the vibrator's working efficiency and service life. Therefore, innovative structural design is urgently needed to improve heat dissipation to meet the demands of the operating conditions. Summary of the Invention

[0003] The purpose of this invention is to develop an external concrete vibrator using an inclined eccentric block, which improves its heat dissipation, working efficiency and service life, in order to meet the urgent needs of construction, transportation, water conservancy and other fields.

[0004] The technical solution of this utility model is as follows: a slanted disc-shaped eccentric block is made and installed at both ends of the external concrete vibrator motor shaft, and fixed with a key. A wedge-shaped shim (I) and a wedge-shaped shim (II) are respectively placed on the left and right sides of the eccentric block. The shaft end is axially fixed with a shaft elastic retainer. Bearing seats are fixed at both ends of the vibrator housing and connected to the housing with a threaded pair (I). The bearing seats are provided with annular ventilation holes (I). End caps are fixed to the outside of the two bearing seats and connected to the housing and bearing seats with threaded pairs (II). Ventilation holes (II) are evenly distributed around the circumference on the end caps.

[0005] The beneficial effects of this utility model are as follows: The uniquely designed inclined disc-shaped eccentric block also functions as a fan. When the load on the external concrete vibrator increases during the concrete compaction process, generating a large amount of heat, it can force heat dissipation. Combined with the ventilation holes on the bearing seat and end cover, this greatly reduces the temperature rise of the vibrator motor, significantly improves work efficiency, increases product lifespan, and generates significant economic and social benefits at a relatively low cost. It overcomes the shortcomings of existing external concrete vibrators, greatly reduces costs, extends service life, saves labor and time, simplifies maintenance, and is ingeniously conceived, novel in design, rationally structured, safe, and reliable. Attached Figure Description

[0006] Figure 1 This is a cross-sectional view of the structure of this utility model.

[0007] Figure 2 yes Figure 1 A cross-sectional view of the structure of the eccentric block 1.

[0008] Figure 3 yes Figure 2 A left-side view diagram.

[0009] Figure 4 yes Figure 1 A cross-sectional view of the structure of the middle bearing housing 8.

[0010] Figure 5 yes Figure 4 A left-side view diagram.

[0011] Figure 6 yes Figure 1 A schematic diagram of the structure of the middle cover 10. Detailed Implementation

[0012] The details and working process of this utility model are described in detail with reference to the accompanying drawings. An inclined disc-shaped eccentric block 1 is manufactured and installed at both ends of the external concrete vibrator motor shaft 2, and fixed with a key 3. Wedge-shaped washers 4 and 5 are respectively placed on the left and right sides of the inclined eccentric block 1. The shaft end is axially fixed with a shaft elastic retainer 6. Bearing seats 8 are fixed at both ends of the vibrator housing 7, and connected to the housing 7 by threaded joints 9. The bearing seats 8 have annular ventilation holes 8-1. End caps 10 are fixed to the outside of the two bearing seats 8, and connected to the housing 7 and bearing seats 8 by threaded joints 11. The end caps 10 have evenly distributed circumferential ventilation holes 10-1. After the concrete pouring is completed, the power supply of this external concrete vibrator is turned on, and the vibrator starts to operate. During operation, the inclined disc-shaped eccentric blocks 1 at both ends of the motor shaft generate centrifugal force, which is the excitation force for compacting the concrete component. This excitation force is transmitted to the concrete component, forming a disturbance force on the concrete. After a period of vibration, the voids in the concrete are filled, and the concrete component becomes compacted. During the concrete compaction process, the load on the external concrete vibrator increases, generating a large amount of heat, which greatly increases the temperature rise of the vibrator motor. Unlike existing external concrete vibrators, the inclined disc-shaped eccentric blocks of this vibrator act as a fan. In addition, ventilation holes I 8-1 and II 10-1 are opened on the bearing seat 8 and the end cover 10, which greatly improves the heat dissipation. The heat generation and dissipation quickly reach thermal equilibrium, and the temperature rise of the vibrator motor no longer increases. The vibrator can continue to operate stably under a low temperature rise. The beneficial effects of this utility model are as follows: The uniquely designed inclined disc-shaped eccentric block also functions as a fan. During the concrete compaction process, when the load on the external concrete vibrator increases and generates a large amount of heat, it can force heat dissipation. Combined with the ventilation holes on the bearing housing and end cover, this significantly reduces the temperature rise of the vibrator motor, substantially improving work efficiency and extending product lifespan. It generates significant economic and social benefits at a relatively low cost. It overcomes the shortcomings of existing external concrete vibrators, greatly reduces costs, extends service life, saves labor and time, simplifies maintenance, and is ingeniously conceived, novel in design, rationally structured, and safe and reliable.

Claims

1. An external concrete vibrator employing an inclined eccentric mass, characterized by: Make the inclined eccentric block (1) of the inclined disc, install respectively in the both ends of the external concrete vibrator motor shaft (2), with the key (3) fixed, the left and right sides of the inclined eccentric block (1) pad with Ⅰ wedge washer (4) and Ⅱ wedge washer (5) respectively, the shaft end uses the elastic collar (6) for the axial fixed;The casing (7) of the vibrator is fixed with the bearing seat (8) respectively at both ends, is connected with the casing (7) with Ⅰ threaded pair (9), the bearing seat (8) is made with annular Ⅰ ventilation hole (8-1);Two bearing seats (8) outside are fixed with end cover (10) respectively, are connected together with the casing (7) and bearing seat (8) with Ⅱ threaded pair (11), the end cover (10) is made with the circumferential uniform distribution Ⅱ ventilation hole (10-1).

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