CN109537411B

CN109537411B - Concrete pavement vibrator

Info

Publication number: CN109537411B
Application number: CN201811492696.9A
Authority: CN
Inventors: 彭从文
Original assignee: Individual
Current assignee: Pan Yanhui
Priority date: 2018-12-07
Filing date: 2018-12-07
Publication date: 2021-05-25
Anticipated expiration: 2038-12-07
Also published as: CN109537411A

Abstract

The invention provides a concrete pavement vibrator, which comprises a vibration ring body with a circular cross section, wherein an annular channel is arranged in the vibration ring body and is surrounded by electromagnets which are uniformly distributed in the circumferential direction; each electromagnet is provided with a contact switch respectively, the clockwise direction is taken as the advancing direction, and the contact switch corresponding to each electromagnet is positioned behind the electromagnet; an iron ball which can freely roll around the annular channel is arranged in the annular channel; the contact switches are two metal contacts which are close to each other and have gaps, the two metal contacts are manufactured on the surface of the lower part of the annular channel and are flush with the surface of the annular channel, and an iron ball is sequentially overlapped with the two metal contacts in each contact switch in the process of rolling around the annular channel to enable the contact switches to be conducted; the vibrator also comprises a power supply module, and each electromagnet is respectively connected in series with the corresponding contact switch and then connected in parallel to the output end of the power supply module. The vibrator can form efficient vibration operation on the concrete pavement and save energy consumption.

Description

Concrete pavement vibrator

Technical Field

The invention relates to the field of building construction tools, in particular to a concrete pavement vibrator.

Background

At present, in the pouring process of a concrete pavement, in order to make the concrete even, drive away air bubbles in the concrete and prevent a hollowing phenomenon, a concrete vibrator is generally adopted for vibrating. The prior concrete vibrator is in a short rod shape, and an eccentric shaft driven by an external diesel engine and a flexible shaft is arranged in the prior concrete vibrator; when the vibration wave generator works, the eccentric shaft inside the short rod body continuously rotates, so that the short rod body outputs vibration waves orthogonal to the axis of the short rod body. When the vibrator is placed on a poured concrete pavement, the output vibration waves only parallel to the pavement can form effective vibration effect on the concrete, and the vibration waves in other directions can only penetrate through a small area near the vibrator and then are transmitted into a foundation or the outside, so that the vibration effect on the concrete is very weak, a large amount of energy waste is formed, and the vibration efficiency is low.

Disclosure of Invention

In view of the above problems, the present invention provides a concrete pavement vibrator, which can perform efficient vibration operation on a concrete pavement and save energy consumption.

The technical scheme adopted by the invention for solving the technical problems is as follows: the concrete pavement vibrator comprises a vibration ring body with a circular cross section, wherein an annular channel is arranged in the vibration ring body and is surrounded by electromagnets which are uniformly distributed in the circumferential direction; each electromagnet is provided with a contact switch respectively, the clockwise direction is taken as the advancing direction, and the contact switch corresponding to each electromagnet is positioned behind the electromagnet; an iron ball capable of freely rolling around the annular channel is arranged in the annular channel; the contact switches are two metal contacts which are close to each other and have gaps, the two metal contacts are manufactured on the surface of the lower part of the annular channel and are flush with the surface of the annular channel, and the iron ball is sequentially overlapped with the two metal contacts in each contact switch in the process of rolling around the annular channel so as to enable the contact switches to be conducted; the vibrator also comprises a power supply module, and each electromagnet is respectively connected in series with the corresponding contact switch and then connected in parallel to the output end of the power supply module.

Preferably, each of the electromagnets has a gap therebetween to confine the magnetism of each electromagnet in the vicinity of the electromagnet.

Preferably, a pair of optical couplers capable of detecting the passing of the iron ball is arranged in the annular channel, and the optical couplers are electrically connected with the power supply module; the power supply module calculates the rotating speed of the iron ball according to the time interval of the two adjacent times of detection of the iron ball by the optocoupler, and when the rotating speed of the iron ball exceeds a set value, the power supply module suspends power supply to each electromagnet; to prevent the iron ball from rotating too fast. Furthermore, through hole groups which are uniformly distributed in the circumferential direction are arranged at the lower part of the annular channel, and two through holes in each through hole group are symmetrically arranged on the cross section of the annular channel in a splayed inclined downward manner; the outer part of the vibration ring body is wrapped with a rubber layer; and the power supply module stops supplying power to the electromagnet for a period of time, such as 1s, when the iron ball exceeds the sound speed.

The invention has the beneficial effects that: when the concrete pavement vibrator works, the vibrator is horizontally placed in a poured concrete pavement; after the power supply module supplies power to each electromagnet, the electromagnet which is switched on is always positioned in front of the iron ball according to the switch position characteristics of each electromagnet, so that the iron ball is pulled to continuously accelerate in the annular channel to reach a higher rotating speed; in the process of the rapid rotation of the iron balls, the centrifugal force of the iron balls impacts the side wall of the annular channel, so that mechanical impact is output radially outwards and circularly on each part of the peripheral wall of the vibration ring body, vibration waves are uniformly transmitted to the periphery in the horizontal direction by taking the vibration ring body as the center, and therefore efficient vibration operation is formed, and energy consumption is saved.

Drawings

FIG. 1 is a schematic view of an embodiment of the concrete pavement vibrator.

FIG. 2 is a schematic diagram of the vibration wave generated by the concrete pavement vibrator at a certain instant.

Fig. 3 is a schematic view of the dynamic vibration wave of the concrete pavement vibrator.

Fig. 4 is a schematic cross-sectional view of the second embodiment of the concrete pavement vibrator.

Detailed Description

The first embodiment is as follows:

in the first embodiment shown in fig. 1, the concrete pavement vibrator comprises a vibration ring body 1 with a circular cross section, wherein an annular channel 10 is formed inside the vibration ring body 1, and the annular channel 10 is surrounded by electromagnets 2 which are uniformly distributed in the circumferential direction; each of the electromagnets 2 is provided with a contact switch (not shown) in a clockwise direction as a forward direction, and the contact switch corresponding to each of the electromagnets 2 is located behind the electromagnet 2, that is, one contact switch corresponds to one electromagnet located clockwise forward.

An iron ball 3 capable of freely rolling around the annular channel is arranged in the annular channel 10; the contact switch is two

metal contacts

41 and 42 which are close to each other and have gaps, the two

metal contacts

41 and 42 are manufactured on the lower surface of the annular channel 10 and are flush with the surface of the annular channel 10, and the iron ball 3 sequentially overlaps the two

metal contacts

41 and 42 in each contact switch in the rolling process around the annular channel 10 to enable the contact switch to be conducted; the vibrator also comprises a power supply module (not shown in the figure, which is far away from the vibration ring body 1 and can be connected to each electromagnet 2 inside the vibration ring body 1 through a cable, and each electromagnet 2 is respectively connected in series with a corresponding contact switch and then is connected in parallel to the output end of the power supply module.

In the concrete pavement vibrator described above, a gap is provided between each of the electromagnets 2 to restrain the magnetism of each electromagnet 2 in the vicinity of the electromagnet 2.

When the concrete pavement vibrator works, the vibrator is horizontally placed in a poured concrete pavement; after the power supply module supplies power to each electromagnet 2, according to the switch position characteristics of each electromagnet 2, the switched-on electromagnet 2 is always positioned in front of the iron ball 3, so that the iron ball 3 is pulled to continuously accelerate in the annular channel 10 to reach a higher rotating speed; during the process of the rapid rotation of the iron balls 3, the centrifugal force of the iron balls 3 impacts the side wall of the annular channel 10, as shown in fig. 2, and at a certain moment, the vibration ring body 1 is impacted by the centrifugal force of the iron balls 3 and forms a displacement shown by a dotted line outwards in the radial direction; with the continuous rotation of the iron ball 3, the radial displacement shown in fig. 2 continuously rotates, that is, the corrugated dynamic displacement of the periphery of the vibration ring body 1 shown in fig. 3 is formed, that is, the vibration wave is uniformly transmitted to the periphery in the horizontal direction by taking the vibration ring body 1 as the center, thereby forming the efficient vibration operation and saving the energy consumption.

In the concrete pavement vibrator, a pair of

optical couplers

5a and 5b capable of detecting the passing of the iron ball 3 are arranged in the annular channel 10, and the

optical couplers

5a and 5b are electrically connected with the power supply module; the power supply module calculates the rotating speed v of the iron ball 3 according to the time interval t of the iron ball 3 detected twice by the adjacent

optical couplers

5a and 5b, namely the rotating speed v is equal to the axial length L of the annular channel 10, and the quotient of the axial length L and the event interval t is as follows: v = L/t; when the rotating speed of the iron ball 3 exceeds a set value, the power supply module suspends power supply to each electromagnet 2; to prevent the iron balls 3 from rotating too fast.

Example two:

for the second embodiment shown in fig. 4, it is different from the first embodiment in that the lower portion of the annular channel 10 is provided with circumferentially uniformly distributed through hole groups, and two through

holes

100a, 100b in each through hole group are symmetrically arranged on the cross section of the annular channel 10 in a splayed inclined downward manner; the outside of the vibration ring body is wrapped with a rubber layer 6; the power supply module stops supplying power to the electromagnet 2 for a period of time, such as 1s, when the iron ball 3 exceeds the speed of sound.

According to the second embodiment, it is advantageous that when the iron ball 3 reaches the sound speed, the air in front of the iron ball is compressed until the air is compressed to a large pressure, at this time, after the power supply to each electromagnet 2 is cut off, the iron ball 3 is decelerated, the compressed air in front of the iron ball is rapidly exploded to form a near-sonic-explosion phenomenon, and the rubber layer 6 intermittently outputs pulse strong vibration to the outside through each through hole group to impact on the rubber layer 6, so that the rubber layer 6 is adapted to the concrete pouring road surface with large thickness, such as the road surface containing a large amount of stones or other debris.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. A concrete pavement vibrator comprises a vibration ring body (1) with a circular cross section, wherein an annular channel (10) is formed in the vibration ring body (1), and the annular channel (10) is surrounded by electromagnets (2) which are uniformly distributed in the circumferential direction; each electromagnet (2) is respectively provided with a contact switch, the clockwise direction is taken as the advancing direction, and the contact switch corresponding to each electromagnet (2) is positioned behind the electromagnet (2); an iron ball (3) capable of freely rolling around the annular channel is arranged in the annular channel (10); the contact switch is two metal contacts (41, 42) which are close to each other and have gaps, the two metal contacts (41, 42) are manufactured on the lower surface of the annular channel (10) and are flush with the surface of the annular channel (10), and the iron ball (3) sequentially overlaps the two metal contacts (41, 42) in each contact switch in the rolling process around the annular channel (10) to enable the contact switch to be conducted; the vibrator also comprises a power supply module, and each electromagnet (2) is connected in series with the corresponding contact switch and then connected in parallel to the output end of the power supply module; the method is characterized in that: a pair of optical couplers (5 a, 5 b) capable of detecting the passing of the iron ball (3) is arranged in the annular channel (10), and the optical couplers (5 a, 5 b) are electrically connected with the power supply module; the power supply module calculates the rotating speed of the iron ball (3) according to the time interval between two adjacent detections of the iron ball (3) by the optocouplers (5 a and 5 b); through hole groups which are uniformly distributed in the circumferential direction are arranged at the lower part of the annular channel (10), and two through holes (100 a, 100 b) in each through hole group are symmetrically arranged on the cross section of the annular channel (10) in a splayed inclined downward mode; the rubber layer (6) is wrapped outside the vibration ring body (1); and the power supply module stops supplying power to the electromagnet (2) for a period of time when the iron ball (3) exceeds the sound speed.

2. A concrete pavement vibrator according to claim 1, wherein: gaps are arranged between the electromagnets (2) to restrain the magnetism of the electromagnets (2) in the vicinity of the electromagnets (2).