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عربى1. Eccentric type: It uses a shaft with eccentric mass installed in the center of the vibrating rod. The centrifugal force generated during high-speed rotation is transmitted to the vibrating rod housing through the bearing, so that the vibrating rod produces circular vibration.
2. Planetary type: It uses the shaft with one end suspended in the vibrating rod. When it rotates, the conical part of the lower end rolls along the conical surface in the rod shell, so as to form the planetary motion of the rolling body to move the rod body to generate a circle. sports.
According to the principle of vibration generated by the vibrator, there are two types: eccentric type and planetary type. Its vibration structure and working principle are:
Eccentric. It uses a shaft with eccentric mass installed in the center of the vibrating rod, and the centrifugal force generated during high-speed rotation is transmitted to the vibrating rod shell through External Hoses Manufacturers the bearing, so that the vibrating rod generates circumferential vibration.
Planetary excitation principle. It uses a shaft with one end suspended in the vibrating rod. When it rotates, the conical part of the drooping end rolls along the conical surface in the rod shell, thereby forming the planetary motion of the rolling body to drive the rod body to generate circular vibration.
There are many types of concrete vibrators. Commonly used classification methods are as follows:
1) According to the method of transmitting vibration, there are three kinds of internal vibrators, external vibrators and surface vibrators.
Internal vibrators are also known as plug-in vibrators. When working, the vibrating head 1 is inserted into the concrete, and its vibration wave is directly transmitted to the concrete. This vibrator is mostly used for vibrating concrete layers with large thickness, such as bridge piers, abutment foundations and foundation piles. Its advantages are light weight, easy to move and widely used.
The external vibrator, also known as the attached vibrator, is a motor with vibration function. A special bottom plate is installed on the bottom surface of the machine. The bottom plate is attached to the template during operation, and the vibration wave generated by the vibrator passes through the bottom plate and the template. The formwork is passed to the concrete indirectly. This vibrator is mostly used in the construction of thin shell members, hollow slab beams, arch ribs, T-beams, etc. According to the needs of construction, in addition to the attached type, the external vibrator also has a vibrating table, which is used to vibrate the concrete prefabricated products. The preform installed in the formwork is placed on the table connected with the vibrator, and the vibration wave generated by the vibrator is transmitted to the concrete preform through the table and the formwork.
The surface vibrator is placed directly on the concrete surface, and the vibration wave generated by the vibrator is transmitted to the concrete through the vibrating base plate 1 fixed to it. Since the vibration wave is introduced from the concrete surface, it is called a surface vibrator. When working, two people hold the handle 4 of the vibrator and drag it according to the needs of the work. It is suitable for the construction of concrete pavements and bridge decks with small thickness. 2) According to the power source of the vibrator, there are three types: electric type, internal combustion type and pneumatic type, and the electric type is the most widely used. 3) According to the vibration frequency of the vibrator, there are three types: low frequency type, medium frequency type and high frequency type.
The vibration frequency of the low frequency type is 25~50HZ (1500~3000 times/min);
The intermediate frequency is 83~133HZ (5000~8000 times/min);
The high frequency type is 167HZ (10000 times/min) or more.
When the concrete is poured with a concrete mixer, the air bubbles must be removed, and the concrete must be tamped to make the concrete densely combined and eliminate the honeycomb pitted surface of the concrete, so as to improve its strength and ensure the quality of the concrete components. A concrete vibrator is a machine for mechanized tamping of concrete.
There are many types of concrete vibrators. Commonly used classification methods are as follows:
1) According to the method of transmitting vibration, there are three kinds of internal vibrators, external vibrators and surface vibrators.
Internal vibrators are also known as plug-in vibrators. When working, the vibrating head 1 is inserted into the concrete, and its vibration wave is directly transmitted to the concrete. This vibrator is mostly used for vibrating concrete layers with large thickness, such as bridge piers, abutment foundations and foundation piles. Its advantages are light weight, easy to move and widely used.
